A communication method and apparatus

Abstract

A communication method and apparatus. The method according to an embodiment of the present application is applied to a coverage enhancement scenario, and the method includes: a network device may indicate to a terminal device whether to allow the terminal device to access the network, and / or indicate the transmission repetition times or coverage level of the PDCCH of the terminal device, and the terminal device may perform blind detection according to the indication from the network device. The technical solution of the method according to an embodiment of the present application realizes improving the flexibility of network configuration, reducing the blind detection complexity of the terminal device, saving network resources, and improving communication efficiency.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communications, and in particular, to a communication method and apparatus. Background Art

[0002] In the random access process of a new radio (NR) communication system, a base station sends a physical downlink control channel (PDCCH) to a user equipment (UE), and the PDCCH is used to schedule a physical downlink shared channel (PDSCH). The base station sends a random access response (RAR) on the PDSCH, and the RAR carries an uplink scheduling grant for scheduling a physical uplink shared channel (PUSCH) sent by the user equipment.

[0003] When the number of receiving antennas of the user equipment is small, it will affect the reception of the RAR. By repeatedly sending the PDCCH by the base station and repeatedly receiving the PDCCH by the user equipment, the reception effect of the PDCCH by the user equipment is enhanced, so as to achieve the effect of coverage enhancement. The user equipment obtains the maximum repetition number of the control channel for scheduling the RAR through blind detection of radio resource control (RRC) signaling on the PDSCH, and determines the specific repetition number through downlink control information (DCI) to achieve coverage enhancement.

[0004] Terminal devices with different numbers of antennas or different reception capabilities need to receive coverage enhancement configuration information through a fixed blind detection method, resulting in high blind detection complexity and low network configuration flexibility. Therefore, there is an urgent need for a method that can improve network configuration flexibility and communication efficiency. Summary of the Invention

[0005] The embodiments of the present application provide a communication method and apparatus, which can improve network configuration flexibility, reduce the blind detection complexity of terminal devices, save network resources, and improve communication efficiency.

[0006] In a first aspect of the embodiments of the present application, a communication method is provided, including:

[0007] In the random access process of NR communication, a terminal device sends a network access request to a network device, and the network device responds to the terminal device with first information for the network access request, and the terminal device receives the first information.

[0008] Upon receiving the above first information, the terminal device may determine the access status information of the terminal device or the first repetition count set of the first channel according to the first information, or may simultaneously determine the access status information and the first repetition count set. The repetition counts in the first repetition count set may be one or more. The first repetition count set may be a first reception repetition set or a first transmission repetition set.

[0009] The terminal device may determine whether the terminal device can access the network of the above network device or cannot access the network of the above network device according to the indication of the determined access status information.

[0010] Based on the first repetition count set determined by the first information, the terminal device may determine the first repetition count corresponding to the first channel according to a predefined determination method, and receive or transmit the first channel according to the first repetition count.

[0011] In the embodiments of the present application, the terminal device may determine whether it can access the network according to the access status information sent by the network device, avoiding wasting network resources by the terminal device still listening to the first channel when it is not supported to access the network, so as to save network resources and improve communication efficiency; it may also determine the first repetition count for transmitting the first channel according to the received repetition count set, reducing the blind detection complexity of the terminal device.

[0012] Combined with the first aspect, in the first implementation manner of the first aspect of the embodiments of the present application, the access status information is determined by a bit status in the first information, and the bit status is used to indicate that the terminal device is not allowed to access the network, and the bit status is related to the first feature information of the terminal device.

[0013] The first feature information of the terminal device includes at least one of the following: bandwidth (channel bandwidth), number of supported or configured resource units (the resource unit may be a resource block (RB), a resource element (RE), a subcarrier, an RB group, a resource element group (REG), a bundle, a control channel element, a subframe, a radio frame, a time slot, a mini-slot, a symbol), number of radio frequency channels, number of hybrid automatic repeat request (HARQ) processes, supported peak rate, application scenario, latency requirement, processing capacity, protocol version, duplex mode (half-duplex, full-duplex), service (Internet of Things applications such as video surveillance, mobile broadband (MBB), etc.), aggregation level information, candidate control channel information, type of the terminal device, number of transmit antennas of the terminal device, number of receive antennas of the terminal device, resource, resource index, level, level index, enhanced level, enhanced level index, repetition level, repetition level index, number of repetitions, number of repetitions index, coverage enhancement value, index of the coverage enhancement range, path loss value, index of the path loss range, reference signal received power value, index of the reference signal received power range, reference signal received quality value, index of the reference signal received quality range, channel quality information value, index of the channel quality information range, service type, index of the service type, power saving requirement, index of the power saving requirement, latency requirement, index of the latency requirement, number of times of detecting the pre-specified first channel, index of the number of times of detecting the pre-specified first channel, mobility requirement, index of the mobility requirement).

[0014] Combined with the first aspect, in the second implementation manner of the first aspect of the embodiments of the present application, the first information may include repetition level information, and the repetition level information may be used to indicate the set of repetition times of the above-mentioned first channel.

[0015] Combined with the second implementation manner of the first aspect, in the third implementation manner of the first aspect of the embodiments of the present application, the first set of repetition times is one or more repetition times limited according to the first maximum number of repetitions. The terminal device also receives the first maximum number of repetitions configured by the network device through an RRC message. The terminal device may input the first maximum number of repetitions into the first set of repetition times to determine the actual one or more repetition times, and then determine the first repetition times according to the first indication information sent by the network device.

[0016] Combined with the second or third implementation manners of the first aspect, in the fourth implementation manner of the first aspect of the embodiments of the present application, the repetition level information includes a first value, and the first value is used to indicate that the first repetition times is 1, or is used to indicate that the first repetition times is a first predefined value.

[0017] Combined with the first aspect, in the fifth implementation manner of the first aspect of the embodiments of the present application, the first information includes second feature information, and the second feature information is used to determine the above-mentioned first repetition times set, and the second feature information is associated with the above-mentioned first repetition times.

[0018] Combined with the first aspect, in the sixth implementation manner of the first aspect of the embodiments of the present application, when the first repetition times set indicates a maximum repetition times, the terminal device may look up a table to determine multiple repetition times indicated by the maximum repetition times, and determine the first repetition times from the multiple repetition times according to the first indication information sent by the network device; when the first repetition times set indicates multiple repetition times, the terminal device may directly determine the first repetition times according to the first indication information sent by the network device.

[0019] Combined with the sixth implementation manner of the first aspect, in the seventh implementation manner of the first aspect of the embodiments of the present application, according to the first repetition times of the determined first channel, the terminal device may further calculate the second repetition times of the second channel according to the first parameter sent by the network device. The first parameter may be a parameter directly sent by the network device, or may be obtained by other means, for example, through a parameter set, and then the first parameter indicated by the first indication information sent by the network device.

[0020] The terminal device may determine the repetition times of the PDSCH according to the repetition times of the PDCCH, or may determine the repetition times of the PDCCH according to the repetition times of the PDSCH.

[0021] The terminal device may further determine the repetition times of the PUSCH according to the repetition times of the PDCCH, or may determine the repetition times of the PDCCH according to the repetition times of the PUSCH.

[0022] In the embodiments of the present application, the terminal device may determine the second repetition times according to the first repetition times, saving the indication bits of the second repetition times in the DCI sent by the network device and saving the DCI overhead.

[0023] Combined with the sixth or seventh implementation manners of the first aspect, in the eighth implementation manner of the first aspect of the embodiments of the present application, after the terminal device determines the first repetition times and receives the first parameter, the terminal device may perform a linear operation, such as multiplication, etc. on the first repetition times and the first parameter to calculate the second repetition times.

[0024] A second aspect of the embodiments of the present application provides a communication method, including:

[0025] During the random access process of NR communication, the terminal device sends a request to access the network to the network device. The network device can obtain the first feature information of the terminal device based on the access network request of the terminal device, or can obtain the first feature information of the terminal device through other means, such as obtaining it through network query.

[0026] Optionally, the first feature information includes two types of REDCAP UEs and one type of legacy UE.

[0027] After the network device obtains the above first feature information, it can determine whether the terminal device with the first feature information is allowed to access, and indicate the terminal device through the access status information; when the terminal device with the first feature information is allowed to access, the network device can determine the first repetition number of the first channel according to the first feature information, and determine the first repetition number set of the first channel, and then send the first repetition number set to the terminal device. The network device transmits the first channel to the terminal device according to the first repetition number.

[0028] In the embodiments of the present application, the network device can send the corresponding access status information and / or the first repetition number set to the terminal device according to the first feature information of the terminal device applying to access the network, so that the terminal device can determine the first repetition number for transmitting the first channel, improving the flexibility of network configuration.

[0029] In the first implementation manner of the second aspect of the embodiments of the present application in combination with the second aspect, the access status information is determined by a bit status in the first information, and this bit status is used to indicate that the terminal device is not allowed to access the network, and this bit status is related to the first feature information of the terminal device.

[0030] In the second implementation manner of the second aspect of the embodiments of the present application in combination with the second aspect, the first information includes repetition level information and a first maximum repetition number. The repetition level information is used to indicate the above first repetition number set, and the first maximum repetition number is determined according to the first feature information.

[0031] In the third implementation manner of the second aspect of the embodiments of the present application in combination with the second implementation manner of the second aspect, the repetition level information includes a first value, and this first value is used to indicate that the above first repetition number is 1, or is used to indicate that the above first repetition number is a first predefined value.

[0032] The first predefined value can be the maximum repetition number R max , or can be other values, such as Specifically, it is not limited here.

[0033] In combination with the second aspect, in the fourth implementation manner of the second aspect of the embodiments of the present application, the above first information includes second feature information, and the second feature information is used to determine the above first repetition number set, and the second feature information is associated with the above first repetition number.

[0034] In combination with the second aspect, in the fifth implementation manner of the second aspect of the embodiments of the present application, when the terminal device corresponding to the first feature information is allowed to access, after the network device determines the first repetition number set of the first channel according to the first feature information, the network device may further determine first indication information used to indicate the first repetition number in the first repetition number set, and send the first indication information to the terminal device.

[0035] In the embodiments of the present application, the network device configures the first indication information according to the first feature information, which can improve the accuracy of the terminal device in determining the first repetition number.

[0036] In combination with the fifth implementation manner of the second aspect, in the sixth implementation manner of the second aspect of the embodiments of the present application, the first information further includes a first parameter, and the first parameter is used to determine the second repetition number of the second channel in combination with the above first repetition number.

[0037] The above first channel is a physical downlink control channel, and the above second channel is a physical downlink shared channel, or, the above first channel is a physical downlink shared channel, and the above second channel is a physical downlink control channel.

[0038] It may also be that the above first channel is a physical downlink control channel, and the above second channel is a physical uplink shared channel, or, the above first channel is a physical uplink shared channel, and the above second channel is a physical downlink control channel.

[0039] The third aspect of the embodiments of the present application provides a communication method, including:

[0040] During the random access process of NR communication, the terminal device sends an access network request to the network device, and the network device responds to the access network request according to the type of the terminal device, and sends a first maximum repetition number or a first repetition number set to the terminal device. The first repetition number set includes one or more repetition numbers. When the first repetition number set is one, the first repetition number set is equivalent to the first maximum repetition number.

[0041] The terminal device receives the above first maximum repetition number or first repetition number set, and may determine the first repetition number in the above first maximum repetition number or first repetition number set according to an adjustment factor.

[0042] Based on the first repetition count determined above, the terminal device can process the first channel according to the first repetition count. Exemplarily, when the first channel is a PDCCH, the terminal device can receive the PDCCH according to the first repetition count. When the first channel is a PDSCH, the terminal device can receive the PDSCH according to the first repetition count. When the first channel is a PUSCH, the terminal device can upload the PUSCH according to the first repetition count.

[0043] In the embodiments of the present application, by adjusting a factor to adjust the first maximum repetition count or the first repetition count set sent by the network device, the terminal device can determine the first repetition count of the first channel corresponding to the terminal device, improving the flexibility of network configuration.

[0044] Combined with the third aspect, in the first implementation manner of the third aspect of the embodiments of the present application, the terminal device receives the first maximum repetition count sent by the network device, and can adjust the first maximum repetition count according to the adjustment factor to obtain the second maximum repetition count actually corresponding to the terminal device. The terminal device looks up a table with the second maximum repetition count to obtain multiple repetition counts, and then determines the above-mentioned first repetition count according to the indication of the first indication information sent by the network device. The first indication information can be a physical layer signaling such as DCI, or a high layer signaling radio access control signaling RRC.

[0045] Combined with the third aspect, in the second implementation manner of the third aspect of the embodiments of the present application, the terminal device receives the first repetition count set sent by the network device, and can adjust the first repetition count set according to the adjustment factor to obtain the second repetition count set actually corresponding to the terminal device. The terminal device can determine the above-mentioned first repetition count according to the indication of the first indication information sent by the network device.

[0046] Optionally, the second repetition count set may include the above-mentioned first repetition count set.

[0047] Combined with the third aspect, the first implementation manner to the second implementation manner of the third aspect, in the third implementation manner of the third aspect of the embodiments of the present application, the above-mentioned adjustment factor can be pre-configured by the network device through high layer signaling or indicated by physical layer information, or can be a predefined setting of the network device for the protocol, or can be defined by the network device according to the first characteristic information and sent to the terminal device.

[0048] The fourth aspect of the embodiments of the present application provides a communication method, including:

[0049] In the random access process of 5G NR communication, the terminal device sends an access network request to the network device. The network device can obtain the first characteristic information of the terminal device based on the access network request of the terminal device or the resources of the access network request, or can obtain the first characteristic information of the terminal device through other means, such as obtaining it through network query.

[0050] Optionally, the first characteristic information includes two types of REDCAP UEs and one type of legacy UE.

[0051] After determining the first characteristic information, the network device can, according to a predefined rule, match the first repetition number corresponding to the first channel based on the first characteristic information.

[0052] Based on the first repetition number determined above, the network device can determine the second maximum repetition number or the second repetition number set corresponding to the terminal device, and then can adjust the second maximum repetition number or the second repetition number set according to a preconfigured adjustment factor to obtain the corresponding first maximum repetition number or the first repetition number set. The network device can send the first maximum repetition number or the first repetition number set to the terminal device based on the first maximum repetition number or the first repetition number set determined above, and repeatedly send the first channel to the terminal device according to the first repetition number.

[0053] In the embodiments of the present application, the network device adjusts the maximum repetition number or the repetition number set sent to the terminal device through an adjustment factor, which can be adapted to multiple terminal devices, improving the flexibility of network configuration.

[0054] Combined with the fourth aspect, in the first implementation manner of the fourth aspect of the embodiments of the present application, the network device can preconfigure or indicate the adjustment factor to the terminal device through higher layer signaling or physical layer information, can also set the adjustment factor through predefined settings of the protocol, or can also define the adjustment factor according to the first characteristic information when sending the first maximum repetition number or the first repetition number set.

[0055] The embodiments of the fifth aspect of the present application provide an indication method, including:

[0056] The terminal device indicates the device type of the terminal device to the network device through Message 1 (Msg1), Message 3 (Msg3), Message A (MsgA), Message 5 (Msg5) in the random access process or the PUSCH carrying the terminal device capability information. The terminal device can indicate it to the network device through the correspondence between the transmission resource and the device type, or can also indicate it to the network device through specific bits or fields.

[0057] In an embodiment of the present application, the terminal device indicates the device type of the terminal device to the network device through the correspondence between transmission resources and device types, or specific bits or fields, providing multiple indication methods and improving the flexibility of network configuration.

[0058] A sixth aspect of the embodiment of the present application provides an indication method, including:

[0059] The network device indicates to the terminal device to report the device type of the terminal device through a master information block (MIB), or a physical broadcast channel (PBCH), or a system information block (SIB), or a physical downlink control channel (PDCCH) scheduling the physical downlink shared channel (PDSCH) carrying SIB1. The system information block may be SIB1. The network device may indicate that different device types of different terminal devices correspond to different random access sequences, or indicate that the terminal device reports first characteristic information to identify the type of the terminal device. The first characteristic information may refer to the relevant description of the first characteristic information in the implementation manner of the first aspect.

[0060] In an embodiment of the present application, the network device provides multiple indication methods by indicating that different device types correspond to different random access sequences or indicating that the terminal device reports first characteristic information to identify the device type, improving the flexibility of network configuration.

[0061] A seventh aspect of the embodiment of the present application provides a communication device, including:

[0062] A transceiver unit, configured to receive first information from a network device, determine a first repetition number of a first channel according to a first repetition number set, and transmit the first channel according to the first repetition number;

[0063] A processing unit, configured to determine access status information and / or a first repetition number set of a first channel according to the first information. The first repetition number set includes at least one repetition number, and determine whether to access the network according to the access status information.

[0064] This communication device is used to execute the method of the foregoing first aspect or any implementation manner of the first aspect.

[0065] An eighth aspect of the embodiment of the present application provides a communication device, including:

[0066] A processing unit, configured to determine first characteristic information of a terminal device;

[0067] A transceiver unit, configured to send a first message to a terminal device according to first feature information, and transmit a first channel according to a first number of repetitions. The first message is used to indicate access status information and / or a first set of numbers of repetitions of the first channel. The first set of numbers of repetitions includes at least one number of repetitions, and the first number of repetitions is determined according to the first feature information.

[0068] This communication device is configured to execute the method of the foregoing second aspect or any implementation manner of the second aspect.

[0069] A ninth aspect of the embodiments of the present application provides a communication device, including:

[0070] A transceiver unit, configured to receive a first maximum number of repetitions or a first set of numbers of repetitions. The first set of numbers of repetitions includes at least one number of repetitions, and transmit the first channel according to the first number of repetitions;

[0071] A processing unit, configured to determine a first number of repetitions of the first channel according to the first maximum number of repetitions or the first set of numbers of repetitions and an adjustment factor.

[0072] This communication device is configured to execute the method of the foregoing third aspect or any implementation manner of the third aspect.

[0073] A tenth aspect of the embodiments of the present application provides a communication device, including:

[0074] A processing unit, configured to determine first feature information of a terminal device;

[0075] A sending unit, configured to send a first maximum number of repetitions or a first set of numbers of repetitions to the terminal device according to the first feature information, and transmit the first channel according to the first number of repetitions. The first number of repetitions is determined according to the first feature information, and the first maximum number of repetitions or the first set of numbers of repetitions is determined according to the first number of repetitions and an adjustment factor.

[0076] This communication device is configured to execute the method of the foregoing fourth aspect or any implementation manner of the fourth aspect.

[0077] The eleventh aspect of the embodiments of the present application provides a communication device, which may be the terminal device described in the fifth aspect above, or an electronic device configured in the terminal device, or a larger device including the terminal device. The terminal device includes corresponding means or modules for performing the above methods. For example, the communication device includes a processing unit (sometimes also referred to as a processing module) and a transceiver unit (sometimes also referred to as a transceiver module). Among them, the processing unit is used to receive indication information from a network device through the transceiver unit, and send device type indication information to the network device through the transceiver module. For another example, the communication device includes a processor coupled to a memory and configured to execute instructions in the memory to implement the method performed by the terminal device in the fifth aspect above. Optionally, the communication device further includes other components, such as antennas, input / output modules, interfaces, etc. These components may be hardware, software, or a combination of software and hardware.

[0078] The twelfth aspect of the embodiments of the present application provides a communication device, which may be the network device described in the sixth aspect above, such as a base station, or a baseband device in the base station. In an alternative implementation, the communication device includes a baseband device and a radio frequency device. In another alternative implementation, the communication device includes a processing unit (sometimes also referred to as a processing module) and a transceiver unit (sometimes also referred to as a transceiver module).

[0079] The processing unit is used to send first indication information to the terminal device through the transceiver unit, and receive device type indication information from the terminal device through the transceiver module.

[0080] In an alternative implementation, the communication device includes a processing unit configured to be coupled to a storage unit and execute programs or instructions in the storage unit to enable the communication device to perform the functions of the first network device and / or the second network device.

[0081] The thirteenth aspect of the embodiments of the present application provides a communication device, which includes at least one processor, a storage system, an input / output (I / O) interface, and computer-executable instructions stored in the storage system and executable on the processor. When the computer-executable instructions are executed by the processor, the processor executes the methods in the first aspect, any implementation manner of the first aspect, the third aspect, or any implementation manner of the third aspect.

[0082] The fourteenth aspect of the embodiments of the present application provides a communication device, which includes at least one processor, a storage system, an input / output (I / O) interface, and computer-executable instructions stored in the storage system and executable on the processor. When the computer-executable instructions are executed by the processor, the processor executes the methods of the second aspect, any implementation manner of the second aspect, the fourth aspect, or any implementation manner of the fourth aspect as described above.

[0083] The fifteenth aspect of the embodiments of the present application provides a computer-readable storage medium, in which a computer program is stored. When the computer program runs on the computer, the computer is caused to execute the method of the first aspect or any implementation manner of the first aspect described above.

[0084] The sixteenth aspect of the embodiments of the present application provides a computer-readable storage medium, in which a computer program is stored. When the computer program runs on the computer, the computer is caused to execute the method of the second aspect or any implementation manner of the second aspect described above.

[0085] The seventeenth aspect of the embodiments of the present application provides a computer-readable storage medium, in which a computer program is stored. When the computer program runs on the computer, the computer is caused to execute the method of the third aspect or any implementation manner of the third aspect described above.

[0086] The eighteenth aspect of the embodiments of the present application provides a computer-readable storage medium, in which a computer program is stored. When the computer program runs on the computer, the computer is caused to execute the method of the fourth aspect or any implementation manner of the fourth aspect described above.

[0087] The nineteenth aspect of the embodiments of the present application provides a computer-readable storage medium, in which a computer program is stored. When the computer program runs on the computer, the computer is caused to execute the method of the fifth aspect described above.

[0088] The twentieth aspect of the embodiments of the present application provides a computer-readable storage medium, in which a computer program is stored. When the computer program runs on the computer, the computer is caused to execute the method of the sixth aspect described above.

[0089] The twenty-first aspect of the embodiments of the present application provides a computer program product. When the computer program product is executed on a computer, the method of the first aspect or any implementation manner of the first aspect described above is executed.

[0090] The twenty-second aspect of the embodiments of the present application provides a computer program product, which, when executed on a computer, executes the method of the foregoing second aspect or any implementation manner of the second aspect.

[0091] The twenty-third aspect of the embodiments of the present application provides a computer program product, which, when executed on a computer, executes the method of the foregoing third aspect or any implementation manner of the third aspect.

[0092] The twenty-fourth aspect of the embodiments of the present application provides a computer program product, which, when executed on a computer, executes the method of the foregoing fourth aspect or any implementation manner of the fourth aspect.

[0093] The twenty-fifth aspect of the embodiments of the present application provides a computer program product, which, when executed on a computer, executes the method of the foregoing fifth aspect.

[0094] The twenty-sixth aspect of the embodiments of the present application provides a computer program product, which, when executed on a computer, executes the method of the foregoing sixth aspect.

[0095] The twenty-seventh aspect of the embodiments of the present application provides a chip, which, when running on a device, enables the device to execute the method of the foregoing first aspect or any implementation manner of the first aspect.

[0096] The twenty-eighth aspect of the embodiments of the present application provides a chip, which, when running on a device, enables the device to execute the method of the foregoing second aspect or any implementation manner of the second aspect.

[0097] The twenty-ninth aspect of the embodiments of the present application provides a chip, which, when running on a device, enables the device to execute the method of the foregoing third aspect or any implementation manner of the third aspect.

[0098] The thirtieth aspect of the embodiments of the present application provides a chip, which, when running on a device, enables the device to execute the method of the foregoing fourth aspect or any implementation manner of the fourth aspect.

[0099] The thirty-first aspect of the embodiments of the present application provides a chip, which, when running on a device, enables the device to execute the method of the foregoing fifth aspect.

[0100] The thirty-second aspect of the embodiments of the present application provides a chip, which, when running on a device, enables the device to execute the method of the foregoing sixth aspect.

[0101] The thirty-third aspect of the embodiments of the present application provides a communication system, which includes the communication device provided in the seventh aspect or the ninth aspect or the eleventh aspect and the communication device provided in the eighth aspect or the tenth aspect or the twelfth aspect. Description of the Drawings

[0102] Figure 1 Schematic diagram of a contention-based random access architecture provided by the embodiments of the present application;

[0103] Figure 2 Schematic diagram of a non-contention-based random access architecture provided by the embodiments of the present application;

[0104] Figure 3 Schematic diagram of a base station and UE transmission architecture provided by the embodiments of the present application;

[0105] Figure 4 Schematic diagram of a process flow of a communication method provided by the embodiments of the present application;

[0106] Figure 6 Schematic diagram of another process flow of a communication method provided by the embodiments of the present application;

[0107] Figure 7 Schematic diagram of another process flow of a communication method provided by the embodiments of the present application;

[0108] Figure 8 Schematic diagram of another process flow of a communication method provided by the embodiments of the present application;

[0109] Figure 9 Schematic diagram of another process flow of a communication method provided by the embodiments of the present application;

[0110] Figure 10 Schematic diagram of a structure of a communication device provided by the embodiments of the present application;

[0111] Figure 11 Schematic diagram of another structure of a communication device provided by the embodiments of the present application;

[0112] Figure 12 Schematic diagram of another structure of a communication device provided by the embodiments of the present application;

[0113] Figure 13 Schematic diagram of another structure of a communication device provided by the embodiments of the present application;

[0114] Figure 14 Schematic diagram of another structure of a communication device provided by the embodiments of the present application;

[0115] Figure 15 Schematic diagram of another structure of a communication device provided by the embodiments of the present application;

[0116] Figure 16Another schematic structural diagram of the communication device provided by the embodiment of the present application. Detailed implementation manners

[0117] The embodiments of the present application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Those of ordinary skill in the art will know that with the development of technology and the emergence of new scenarios, the technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems.

[0118] Terms such as "first" and "second" in the specification, claims and above-mentioned drawings of the present application are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments described here can be implemented in an order different from that shown or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0119] The technical solutions in the embodiments of the present application will be clearly described below with reference to the accompanying drawings in the embodiments of the present application. In the description of the present application, unless otherwise specified, " / " means "or". For example, A / B can mean A or B; "and / or" in the present application is only a corresponding relationship describing associated objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the present application, "at least one item" means one or more items, and "multiple items" means two or more items. "At least one of the following (items)" or similar expressions refer to any combination of these items, including any combination of single (item) or plural (items). For example, at least one of a, b, or c can mean: a, b, c, a - b, a - c, b - c, or a - b - c, where a, b, c can be single or multiple.

[0120] The embodiments of the present application provide a communication method and device, which can reduce the blind detection complexity and save network resources.

[0121] A terminal device, such as a UE, randomly accesses a network device, such as a base station. The process includes contention-based random access and non-contention-based random access. The base station can be a 4G base station eNB or a 5G base station gNB, or other future communication architectures.

[0122] Please refer to Figure 1The shown contention-based random access architecture, step 1: The UE sends a random access preamble on the physical random access channel (PRACH). This step 1 is executed through Message 1 (Msg1). The base station obtains the preamble ID, that is, the random access preamble identifier (RAPID), by detecting the preamble.

[0123] Step 2: The base station sends a random access response (RAR) to the UE. Step 2 is executed through Msg2. Before sending the random access response, the physical downlink control channel PDCCH is sent first. The PDCCH schedules the physical downlink shared channel PDSCH. The random access response is carried and sent on this PDSCH. The RAR carries the timing advance (TA) corresponding to the transmission delay estimated by the base station, the RAPID, (temporary cell-radio network tempory identity, TC-RNTI), and the uplink (UL) grant (Grant) required for the UE to send Msg3 in step 3. The UE uses the TA to adjust the uplink timing.

[0124] Step 3: Send a scheduled transmission according to the scheduling of the UL grant in the RAR. Step 3 is executed by Msg3, where Msg3 carries the identification information of the UE for contention resolution.

[0125] Step 4: The base station sends the contention resolution message to the UE on the PDSCH. Step 4 is executed by Msg4. This step resolves the contention and conflict caused when multiple UEs attempt to access using the same random access resource and the same preamble.

[0126] For the non-contention-based random access architecture, please refer to Figure 2 , The non-contention-based random access uses dedicated random access resources and preambles sent by the base station through random access preamble assignment. There is no contention conflict. Therefore, only steps 1 and 2 above need to be executed, and steps 3 and 4 are not required. The dedicated random access resources can be indicated by the PRACH time-frequency resource index (Mask Index).

[0127] In step 2, the base station sends the PDSCH carrying the RAR to the UE. The RAR carries the TA corresponding to the transmission delay indicated in Msg1, the RAPID, the TC-RNTI, and the UL Grant for Msg3 transmission. Since the reduction in the number of receiving antennas of the terminal device will lead to a small coverage area, which will affect the reception of the RAR and Msg4 during the initial access process, coverage recovery is required for reception. One aspect of this is the coverage recovery of the RAR. The terminal device may include a reduced-capability UE (REDCAP UE). The REDCAP UE may have 1 transmit antenna and 1 receive antenna (i.e., 1T1R), or 1 transmit antenna and 2 receive antennas. In addition, the reduction in the bandwidth and the number of transmit antennas of the REDCAP UE will also affect the uplink coverage. For example, the transmission of the physical uplink shared channel (PUSCH) also requires coverage recovery. It should be noted that the coverage recovery in the embodiments of this application has the same meaning as coverage enhancement and can be equivalently replaced, so it will not be elaborated here.

[0128] In the LTE coverage enhancement technology, the LTE configures the PDCCH and PDSCH to be repeatedly transmitted multiple times to enhance the coverage of the base station's transmission of the PDCCH and PDSCH and improve the accuracy of successful reception by the UE.

[0129] 1. Enhance the coverage of the PDCCH by repeatedly transmitting the PDCCH multiple times. Configure the maximum number of repetitions (R max ) of the control channel scheduling the RAR through RRC signaling, and indicate the specific number of repetitions in DCI format 6-1A, as follows:

[0130] The RRC signaling (physical downlink control channel, MPDCCH) mpdcch - repetition number (NumRepetiton) - RA configures the maximum number of repetitions of the PDCCH scheduling the RAR;

[0131] Through the field DCI repetition number subframe in DCI format 6-1A, when this field is 2 bits, it will indicate one column in Table 1 below, thereby indicating the specific number of repetitions. In the table, r1, r2, r3, r4 represent different repetition number levels, where r1 is the level with the fewest repetitions, and r4 is the level with the most repetitions.

[0132]

[0133] Table 1

[0134] In Example 1, the RRC indicates that the maximum number of repetitions is 4. Then, corresponding to the above table, r1 corresponds to a repetition number of 1, r2 corresponds to a repetition number of 2, and r3 corresponds to a repetition number of 4. Exemplarily, if the network device indicates a specific repetition number of r1 through DCI, the repetition transmission number of this PDCCH is 1. In Example 2, the RRC indicates that the maximum number of repetitions is 16. Then, corresponding to the above table, r1 corresponds to 2, r2 corresponds to 4, r3 corresponds to 8, and r4 corresponds to 16. The specific repetition number can be determined by indicating the repetition number level determined through DCI.

[0135] 2. Enhance the coverage of the PDSCH by repeatedly transmitting the PDSCH multiple times. Configure the maximum number of repetitions of the PDSCH carrying the RAR through RRC signaling, and define a PDSCH repetition level table in Protocol 36.213. Indicate the number of repetitions through DCI format 6-1A. Specifically:

[0136] Configure the maximum number of repetitions of the PDSCH corresponding to coverage enhancement level A through the RRC signaling pdsch-max(max)NumRepetition control element (CE) mode A, which can be configured as 16 or 32 times.

[0137] The field Repetition number in DCI format6-1A indicates the specific PDSCH repetition level corresponding to the higher layer parameter in Table 2 below, thereby indicating the specific number of repetitions:

[0138]

[0139] Table 2

[0140] For example, if the RRC signaling configures the maximum number of repetitions to be 16, then by querying the above table, the set of candidate repetition numbers obtained is {1, 4, 8, 16}. The network device indicates the specific number of repetitions through DCI, and the terminal device can determine the specific number of repetitions by combining the pdsch-maxNumRepetitionCEmodeA parameter and the indication of DCI. For example, 2 bits in DCI can indicate one of the repetition numbers in {1, 4, 8, 16}, that is, the transmission number of the PDSCH, and Not configured means not configured.

[0141] For the PDCCH, since the system information block (SIB) is carried and transmitted in the PDSCH, and the PDSCH is scheduled by the PDCCH. The PDCCH includes one or more control-channel elements (CCEs), which are specifically determined by the aggregation level, as shown in Table 3 below:

[0142]

[0143]

[0144] Table 3

[0145] The relationship between the different aggregation levels (AL) supported by the PDCCH and the CCEs can be represented by Table 4 below:

[0146]

[0147] Table 4

[0148] The Control Resource Set (CORESET) is a newly introduced concept in NR, which represents the time-frequency resource set used to carry the PDCCH.

[0149] One UE can be configured with multiple CORESETs. Each CORESET can only bind one CCE to the resource element group (REG) mapping relationship. The REG is the basic unit of PDCCH resource mapping. One REG is defined as one RB on one OFDM symbol. The REG bundle is a newly introduced concept in NR. The REGs first form a REG bundle in a time-first mapping manner, and then are interleaved or non-interleaved to the control resources in units of REG bundles. One REG bundle (REG combination) consists of a group of REGs that are continuous in the time domain and / or frequency domain. The size of one REG bundle is equal to the size of the REGs occupied in the frequency domain multiplied by the size of the OFDM symbols occupied in the time domain. The CCEs that make up the PDCCH are mapped onto the CORESET (control-resource set) in units of REG bundles. The REGs on the CORESET are numbered in an increasing order of time domain first and then frequency domain.

[0150] L consecutive REGs form a REG bundle.

[0151] When the UE performs blind detection of the PDCCH, it first obtains the information of the CORESET, which can be understood as a resource set. The base station will send the PDCCH on a candidate resource of a certain PDCCH in the CORESET, and the UE will detect all candidates in a blind detection manner according to certain rules (the rules include detecting each aggregation level, and there are different numbers of candidates corresponding to different aggregation levels, and detecting different types of scrambling) until the PDCCH is successfully decoded.

[0152] The terminal device can have different types, such as terminal device type 1 and terminal device type 2, and the first characteristic information of terminal device type 1 and terminal device type 2 is different. The first characteristic information of the terminal device includes at least one of the following: bandwidth (channel bandwidth), number of supported or configured resource units (resource units can be RBs, REs, subcarriers, RB groups, REG bundles, control channel elements, subframes, radio frames, time slots, mini time slots, symbols), number of radio frequency channels, number of hybrid automatic repeat request (HARQ) processes, supported peak rate, application scenario, latency requirement, processing capacity, protocol version, duplex mode (half-duplex, full-duplex), service (Internet of Things applications such as video surveillance, mobile broadband (MBB), etc.), aggregation level information, candidate control channel information, type of the terminal device, number of transmit antennas of the terminal device, number of receive antennas of the terminal device, resource, resource index, level, level index, enhanced level, enhanced level index, repetition level, repetition level index, number of repetitions, number of repetitions index, coverage enhancement value, index of coverage enhancement range, path loss value, index of path loss range, reference signal received power value, index of reference signal received power range, reference signal received quality value, index of reference signal received quality range, channel quality information value, index of channel quality information range, service type, index of service type, power saving requirement, index of power saving requirement, latency requirement, index of latency requirement, number of times of detecting the pre-specified first channel, index of the number of times of detecting the pre-specified first channel, mobility requirement, index of mobility requirement.

[0153] It should be noted that for the terminal device types 1 and 2 in the embodiments of this application, they can be different terminal types of REDCAP, or terminal device type 1 can be a REDCAP UE and terminal device type 2 can be a legacy UE, or other situations. The number of types can also be more than two, which is not limited here. In the embodiments of this application, the case where terminal device types 1 and 2 are different terminal types of REDCAP is taken as an example for illustration.

[0154] The description of the first feature information that can be used to characterize the terminal device in the embodiments of this application is as follows:

[0155] Bandwidth (channel bandwidth), that is, the bandwidth supported or configured by the terminal device. In the embodiments of this application, the bandwidths of terminal devices may be different. For example, the bandwidth of terminal device type 1 is 20 megabits per second (Mbps, M), and the bandwidth of terminal device type 2 is 100M; or the bandwidth of terminal device type 1 is 20M, and the bandwidth of terminal device type 2 is 10M.

[0156] The number of resource units supported or configured. For example, the number of resources supported by terminal device type 1 is 48 RBs, and the number of resources supported by terminal device type 2 is 96 RBs.

[0157] The number of transmit antennas of the terminal device and the number of receive antennas of the terminal device, that is, the number of transmit antenna ports and / or receive antenna ports of terminal device type 1 is different from that of terminal device type 2. For example, the number of transmit antenna ports of terminal device type 1 is 1, and the number of receive antenna ports is 2, while the number of transmit antenna ports of terminal device type 2 is 2, and the number of receive antenna ports is 4.

[0158] The number of radio frequency channels, that is, the number of radio frequency channels of terminal device type 1 is different from that of terminal device type 2. For example, the number of radio frequency channels of terminal device type 1 is 1, and the number of radio frequency channels of terminal device type 2 is 2.

[0159] The number of HARQ processes, that is, the number of HARQ processes supported by terminal device type 1 is different from that of terminal device type 2. For example, the number of HARQ processes of terminal device type 1 is 8, and the number of HARQ processes of terminal device type 2 is 16.

[0160] The supported peak rate, that is, the maximum peak rates of terminal device types 1 and 2 are different. For example, the maximum peak rate supported by terminal device type 1 is 100 Mbps, and the peak rate supported by terminal device type 2 is 200 Mbps.

[0161] Application scenarios, that is, terminal device type 1 and terminal device type 2 are for different application scenarios, such as: terminal device type 1 is applied to industrial wireless sensing, video surveillance, wearable devices, etc., and terminal device type 2 is applied to mobile communication, video Internet access, etc.

[0162] Latency requirements, that is, terminal device type 1 and terminal device type 2 have different requirements for transmission latency. For example, the latency requirement for terminal device type 1 is 500 milliseconds, and the latency requirement for terminal device type 2 is 100 milliseconds.

[0163] Processing capabilities, that is, terminal device type 1 and terminal device type 2 have different processing timings and speeds for channels or data under different SCS conditions. For example, terminal device type 1 does not support complex operations (complex operations include: artificial intelligence (AI), virtual reality (VR) rendering), and terminal device type 2 supports complex operations; for example, the processing capability of terminal device type 1 is lower than that of terminal device type 2; for example, the scheduling latency of PDCCH scheduling PDSCH or PUSCH is different.

[0164] Protocol versions, that is, terminal device type 1 and terminal device type 2 belong to terminal devices of different protocol versions. For example, the protocol version supported by terminal device type 1 is Release 17, and the protocol version supported by terminal device type 2 is Release 15.

[0165] Duplex mode (half-duplex, full-duplex). For example, terminal device type 1 works in a half-duplex mode, and terminal device type 2 works in a full-duplex mode.

[0166] Services (IoT applications such as video surveillance, MBB, etc.). For example, the service supported by terminal device type 1 is video surveillance, and the service supported by terminal device type 2 is MBB.

[0167] For the actual scenario to which this embodiment is applied, please refer to Figure 3 The shown base station and UE transmission architecture. The base station is an eNB or a gNB. The UE includes terminal device type 1, terminal device type 2, and a conventional terminal device. The base station receives random access requests from terminal device type 1, terminal device type 2, and the conventional terminal device. Terminal device type 1, terminal device type 2, and the conventional terminal device access the network and receive and send data to and from the base station.

[0168] Based on the random access architecture and the base station and UE transmission architecture, the communication method in the embodiments of the present application will be described below:

[0169] In this application, the terminal device is a device with wireless transceiver capabilities, which can be a fixed device, a mobile device, a handheld device (such as a mobile phone), a wearable device, a vehicle-mounted device, or a wireless device (such as a communication module, a modem, or a chip system, etc.) built into the above devices. The terminal device is used to connect people, things, machines, etc., and can be widely used in various scenarios, such as including but not limited to the following scenarios: cellular communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) communication, machine-to-machine / machine-type communications (M2M / MTC), Internet of Things (IoT), virtual reality (VR), augmented reality (AR), industrial control, self-driving, remote medical, smart grid, smart furniture, smart office, smart wearables, smart transportation, smart city, drones, robots, etc. The terminal device may sometimes be referred to as a user equipment (UE), a terminal, an access station, a UE station, a remote station, a wireless communication device, or a user device, etc. For the convenience of description, the terminal device will be described by taking the UE as an example in this application.

[0170] The network device in this application includes, for example, an access network device and / or a core network device. The access network device is a device with wireless transceiver functions and is used to communicate with the terminal device. The access network device includes, but is not limited to, base stations (BTS, Node B, eNodeB / eNB, or gNodeB / gNB), transmission reception points (TRP) in the above communication system, base stations evolved by 3GPP in the future, access nodes in the WiFi system, wireless relay nodes, wireless backhaul nodes, etc. The base station can be: a macro base station, a micro base station, a pico base station, a small station, a relay station, etc. Multiple base stations can support the network of the same access technology mentioned above, or can support the networks of different access technologies mentioned above. The base station can include one or more co-site or non-co-site transmission and reception points. The network device can also be a radio controller, a centralized unit (CU), and / or a distributed unit (DU) in the cloud radio access network (CRAN) scenario. The network device can also be a server, a wearable device, or a vehicle-mounted device, etc. For example, the network device in V2X technology can be a road side unit (RSU). The following takes the base station as an example to illustrate the access network device. The multiple network devices in the communication system can be the same type of base station or different types of base stations. The base station can communicate with the terminal device or can communicate with the terminal device through a relay station. The terminal device can communicate with multiple base stations in different access technologies. The core network device is used to implement functions such as mobility management, data processing, session management, policy and charging. The device names for implementing core network functions in systems of different access technologies can be different, and this application does not limit this. Taking the 5G system as an example, the core network device includes: access and mobility management function (AMF), session management function (SMF), or user plane function (UPF), etc.

[0171] It should be noted that the terminal device can process the message sent by the network device with or without an adjustment factor. The following are the explanations respectively:

[0172] 1. The terminal device does not process the message sent by the network device with an adjustment factor:

[0173] In this embodiment, the terminal device determines whether to access the network according to the access status information, and determines the first repetition count of the first channel according to the first repetition count set. The access status information is used to indicate whether the terminal device can access the network. When the access status information indicates that the terminal device cannot access the network, the terminal device stops listening to the PDCCH. When the access status information indicates that the terminal device can access the network, the terminal device performs the operation of determining the first repetition count. Specifically, the access status information may include at least one bit, and indicates whether the terminal device can access the network through the bit status and bit value. For example, when the bit value is 1, it means that the terminal device can access the network, and when the bit value is 0, it means that the terminal device cannot access the network.

[0174] In practical applications, the terminal device may determine the access status information or may not determine the access status information. The following is a separate description:

[0175] 1. It is necessary to determine the access status information:

[0176] In this embodiment, the terminal device may determine whether it can access the network according to the access status information. Please refer to Figure 4 , and a process of the communication method in an embodiment of this application includes:

[0177] 401. The terminal device sends an access request to the network device. Correspondingly, the network device receives the access request from the terminal device.

[0178] In this embodiment, during the random access process of the terminal device accessing the network, the terminal device may send an access request to the network device. This request may include the first feature information of the terminal device or may not include the first feature information. This embodiment does not make a limitation in this regard.

[0179] 402. The network device determines the access status information and the repetition level information.

[0180] In this embodiment, the network device may determine the access status information in the following four cases:

[0181] Case 1: The network device determines the terminal type of the terminal device according to the access request of the terminal device. The terminal type may be determined through the first feature information. Specifically, the first feature information is the time domain resource and / or frequency domain resource of the random access sequence of the terminal device. Specifically, no limitation is made here.

[0182] Case 2: After the terminal device sends an access request, it may send the first feature information to the network device through Msg3. Specifically, the first feature information may be the bandwidth of the terminal device, or the number of transmit antennas of the terminal device, or the number of receive antennas of the terminal device.

[0183] Scenario 3: After the terminal device sends an access request and has accessed the network, the terminal device sends first feature information through the physical uplink shared channel. For example, the first feature information is the bandwidth of the terminal device, or the number of transmit antennas of the terminal device, or the number of receive antennas of the terminal device.

[0184] Scenario 4: The network device does not need to determine the first information based on the first feature information. The network device will determine whether to allow the terminal device to access the network according to the current load situation. For example, when the network load is large, that is, the number of terminal devices accessing the network is large, the REDCAP UE or a certain type of terminal device is not allowed to access the network; when the network load is small, that is, the number of terminal devices accessing the network is small, the REDCAP UE or a certain type of terminal device is allowed to access the network.

[0185] In the above scenarios 1 to 4, when the network device determines that the terminal device sending the access request is a REDCAP UE based on the first feature information, if the network device does not support this terminal type, for example, the network device may only support legacy UEs and not support REDCAP UEs, then it is determined that the terminal device is not allowed to access the network; if the terminal device is a legacy UE or the network device also supports REDCAP UEs, then it is determined that the terminal device is allowed to access the network.

[0186] The network device can indicate to the terminal device how to report the device type of the terminal device (i.e., the downlink indication method), including: The network device can indicate to the terminal device through the master information block (MIB), the physical broadcast channel (PBCH), the system information block (SIB), or the PDCCH (the PDCCH for scheduling the PDSCH carrying SIB1). The system information block can be SIB1, that is, the indication information of the network device can be carried on the above channels and can be indicated by at least one bit carried by the above channels. For example, when two device types need to be indicated, it can be indicated by 1 bit. When three or four device types need to be indicated, it can be indicated by 2 bits. The network device can indicate the time-domain resource, and / or the frequency-domain resource, and / or the code-domain resource of the random access sequence corresponding to different device types. Then, the network device can identify different types of terminal devices according to the resources; it can also indicate that the terminal device reports the device type through specific bits or fields; it can also indicate that the terminal device does not need to identify the device type of the terminal device in the random access phase, that is, it indicates that the terminal device does not need to indicate the device type to the network device. Further, the network device can use multiple indication messages to respectively indicate different reporting methods corresponding to different types of terminal devices. For example, for four different types of terminal devices, the network device can use 4 bits in SIB1 to respectively indicate the four reporting methods corresponding to the four device types.

[0187] Correspondingly, the methods for the terminal device to indicate the device type to the network device (i.e., the uplink indication method) include: transmission through Msg1, or Msg3, or message A (MsgA), or message 5 (Msg5), or PUSCH transmission carrying UE capability information. Specifically, the terminal device can indicate through the correspondence between the transmission resource and the device type, or through specific bits or fields. Among them, the terminal device can determine the specific indication method according to the message from the network device, or can also determine the specific indication method through predefined rules. For example, the network device indicates at least one Msg1 resource corresponding to at least one device type through the MIB. After receiving the MIB, the terminal device can determine the corresponding Msg1 resource according to the MIB and the device type, and send Msg1 to the network device according to the corresponding Msg1 resource. The network device determines the corresponding device type according to the resource of Msg1. Another example is that the network device indicates through the PBCH that a bit in the Msg3 message is used to report the device type; another example is that the standard predefines that the terminal device reports the device type in MsgA.

[0188] It should be understood that the above-mentioned multiple downlink indication methods and multiple uplink indication methods can be combined with each other.

[0189] The network terminal can determine the access status information according to the first feature information. That is, the network device first determines whether the terminal device can access the network according to the first feature information. When the terminal device cannot access the network, the network device can set a bit status to indicate that the terminal device is not allowed to access the network. This bit status is the access status information determined by the network device, that is, the bit status is related to the first feature information. In one example, the first feature information can be the device type of the terminal device. When the device type is terminal device type 1 or terminal device type 2, if the network device only supports legacy UE and does not support REDCAP UE, the network device can set this bit status to indicate that the terminal device is not allowed to access the network. Specifically, this bit status can be a bit value. Optionally, there can also be other bit statuses corresponding to terminal devices with other different first feature information, which are used to indicate whether terminal devices of other device types are allowed to access the network.

[0190] In another example, this bit status can also be 0 or 1. If the network device only supports legacy UE and does not support REDCAP UE, when the device type is terminal device type 1 or terminal device type 2, this bit status is set to 0, that is, the terminal device is not allowed to access the network; when the device type is legacy UE, this bit status is set to 1, that is, the terminal device is allowed to access the network. This embodiment does not make any limitations in this regard.

[0191] When the terminal device is not allowed to access the network, the information indicated by the repetition level information determined by the network device can be empty, or step 402 does not need to determine the repetition level information.

[0192] When the terminal device is allowed to access the network, the network device can determine the first repetition number, repetition level information, and first maximum repetition number corresponding to the first channel according to predefined rules. The first channel is a physical channel for the network device and the terminal device to transmit information, which can be PDCCH, or other channels, such as PDSCH, PUSCH, etc.

[0193] This first repetition number can be the number of times the network device sends the first channel.

[0194] The repetition level information reflects the number of possible repetition times for the terminal device to receive the first channel.

[0195] The first maximum repetition number is used to delimit the repetition number selection range in combination with the repetition level information.

[0196] The repetition level information can be used to indicate a first set of repetition times corresponding to the first channel. The first set of repetition times is a set of possible repetition times for the terminal device to receive or transmit the first channel. The first repetition times included in the first set of repetition times can be one or more. Exemplarily, when the device type of the terminal device is a legacy UE, the repetition level information can be set to a first value, and the first value is used to indicate that the first repetition times is 1, or is used to indicate that the first repetition times is a first predefined value. The first predefined value can be the first maximum repetition times R max , and can also be other values, such as which is not specifically limited here. The first value can be set to 1 or other values, which is not specifically limited here.

[0197] In a possible example, the repetition level information of terminal device type 1 can be set to a second value, such as 4, which is used to indicate that the first set of repetition times corresponding to the terminal device of this device type contains 4 repetition times. Exemplarily, it can be R max , Then the network device can indicate the first repetition times therein by configuring a first indication message (such as DCI); the repetition level information of terminal device type 2 can be set to a third value, such as 2, which is used to indicate that the first set of repetition times corresponding to the terminal device of this device type contains 2 repetition times. Exemplarily, it can be R max , Then the network device can indicate the first repetition times therein by configuring a first indication message (such as DCI).

[0198] When the access status information indicates that the terminal device is not allowed to access the network, the first information in the embodiments of the present application only includes the access status information or the first information includes the access status information and the repetition level information, and the information indicated by the repetition level information is empty; when the access status information indicates that the terminal device is allowed to access the network, the first information includes the access status information, the repetition level information and the first maximum repetition times. At this time, the first information can also be carried by multiple messages, such as carrying the access status information, the repetition level information and the first maximum repetition times respectively.

[0199] 403. The network device sends the access status information and / or the repetition level information to the terminal device. Correspondingly, the terminal device receives the access status information and / or the repetition level from the network device.

[0200] After determining the access status information and the repetition level information, the network device sends the first information including the access status information and the repetition level information to the terminal device. Optionally, when the terminal device is not allowed to access the network, the repetition level information is empty or the network device only sends the access status information to the terminal device.

[0201] 404. The terminal device determines whether it can access the network. If the terminal device can access the network, step 406 is executed; if the terminal device cannot access the network, step 405 is executed.

[0202] Based on the above first information received, the terminal device can determine the access status information and judge whether the terminal device can access the network according to the access status information. Exemplarily, when the bit status in the first information is 1, it can indicate that the terminal device can access the network; when the bit status is 0, it can indicate that the terminal device cannot access the network; or when the bit status has a value, it indicates that the terminal device can access the network, and when the bit status has no value, the terminal device cannot access the network. The specific situation is not limited here.

[0203] 405. The terminal device determines that it cannot access the network.

[0204] After the terminal device determines the access status information, if the access status information indicates that the terminal device is not allowed to access the network, the terminal device determines that it cannot access the network and stops listening for the information transmitted by the network device through the physical channel.

[0205] 406. The terminal device determines the first repetition count.

[0206] After the terminal device determines that it can access the network, it can determine the repetition level information and the first maximum repetition count according to the first information, and determine the first repetition count of the first channel based on the repetition level information. Exemplarily, when the repetition level information is 1, the terminal device does not need to blindly detect the PDCCH, and the terminal device can determine that the first repetition count is 1 or a first predefined value; when the repetition level information is 2 or 4, the terminal device can determine the first repetition count set according to the repetition level information and the first maximum repetition count. At this time, the terminal device needs to blindly detect the PDCCH to obtain the first indication information (such as DCI) to determine the first repetition count in the first repetition count set.

[0207] 407. The terminal device transmits the first channel.

[0208] After determining the first repetition count, the terminal device can receive the first channel according to the first repetition count. Exemplarily, when the first channel is the PDCCH, the network device sends the PDCCH according to the first repetition count. Specifically, the timing for the network device to send the PDCCH is not limited, and the terminal device receives the PDCCH according to the first repetition count; the PDCCH can be the PDCCH for scheduling the system information block (SIB), or the PDCCH for scheduling the PDSCH carrying the RAR, or the PDCCH for scheduling the PDSCH carrying Msg4, or the PDCCH for scheduling the PDSCH carrying other downlink data. When the first channel is the PDSCH, the terminal device receives the PDSCH according to the first repetition count, or the PDSCH carrying other downlink data; the PDSCH can be the PDSCH carrying the SIB, or the PDSCH carrying the RAR, or the PDSCH carrying Msg4. When the first channel is the PUSCH, the step executed in step 407 can also be that the UE sends the PUSCH according to the first repetition count; the PUSCH can be the PUSCH carrying Msg3, or the PUSCH carrying other uplink data, and specifically it is not limited here.

[0209] In the embodiments of the present application, the terminal device can determine whether it can access the network according to the access status information sent by the network device, avoiding wasting network resources when the terminal device listens to the first channel when it is not supported to access the network, and can save network resources and improve communication efficiency.

[0210] Furthermore, the terminal device determines the first repetition count according to the repetition level information, which can reduce the complexity of blind detection.

[0211] 2. The network device does not need to send access status information to the terminal device:

[0212] In practical applications, the network device can not send the access status information to the terminal device. The access status information can be indicated by other information in the first information and indicates a set of repetition counts. The network device can also not limit the type of terminal device, that is, different terminal devices can access the network. The network device can send the first information directly including the set of repetition counts to the terminal device. The following is a separate description:

[0213] 2.1. The network device indicates the set of repetition counts to the terminal device through the first information:

[0214] In this embodiment, the terminal device can determine the first set of repetition counts according to the repetition level information in the first information, or determine the first set of repetition counts according to the first feature information in the first information.

[0215] 2.1.1. The network device indicates to the terminal device whether it can access the network and the first set of repetition times through the repetition level information, reducing the use of access status information and saving network resources:

[0216] Please refer to Figure 5 , another process of the communication method in this embodiment includes:

[0217] 501. The terminal device sends an access request to the network device. Correspondingly, the network device receives the access request from the terminal device.

[0218] For step 501 in this embodiment, please refer to Figure 4 step 401 in the embodiment shown, which will not be elaborated here.

[0219] 502. The network device determines the repetition level information.

[0220] This embodiment can be based on the four cases in step 402 of the embodiment shown in Figure 4 , and use the same indication method for the terminal type, which will not be elaborated here.

[0221] In this embodiment, whether the network device allows the terminal device to access the network does not need to be indicated by the access status information and can be directly indicated by the repetition level information. Exemplarily, when the network device does not allow the terminal device to access the network, the network device can set the repetition level information to the fourth value, which can be a predefined value, such as 0 or reuse the value of an invalid repetition level to indicate that the network device does not allow the terminal device to access the network.

[0222] When the terminal device is allowed to access the network, the network device can determine the first repetition times corresponding to the first channel, the repetition level information, and the first maximum repetition times according to the predefined rules.

[0223] Other values of the repetition level information can refer to the relevant descriptions in step 402 of the embodiment shown in Figure 4 , and will not be elaborated here specifically.

[0224] 503. The network device sends the repetition level information to the terminal device. Correspondingly, the terminal device receives the repetition level information from the network device.

[0225] The network device sends the first information containing the determined repetition level information to the terminal device.

[0226] 504. The terminal device determines whether it can access the network. When the terminal device can access the network, it executes step 506. When the terminal device cannot access the network, it executes step 505.

[0227] Based on the received first information, the terminal device obtains the repetition level information, and determines whether the terminal device can access the network according to the value of the repetition level information. Exemplarily, when the repetition level information is the value 0, the terminal device can determine that it is not allowed to access the network and execute step 505; when the repetition level information is other values, the terminal device determines that it can access the network and executes step 506.

[0228] 505. The terminal device stops listening to the PDCCH.

[0229] 506. The terminal device determines the first repetition count.

[0230] 507. The terminal device transmits the first channel.

[0231] In this embodiment, for steps 505 - 507, please refer to Figure 4 the relevant descriptions of steps 405 - 407 in the embodiment shown, and details are not described here again.

[0232] In the embodiment of the present application, the terminal device can determine whether it can access the network according to the access status information sent by the network device, avoiding wasting resources when the terminal device listens to the first channel when it is not supported to access the network; it can also determine the first repetition count for transmitting the first channel according to the received repetition count set, improving the flexibility of network configuration.

[0233] Furthermore, the terminal device indicates whether it can access the network through the repetition level information, reducing information interaction, saving network resources, and improving communication efficiency.

[0234] 2.1.2. The network device indicates the first repetition count to the terminal device through the second characteristic information, and the terminal device can obtain the first repetition count for receiving the first channel without blind detection, saving network resources:

[0235] Please refer to Figure 6 , another process of the communication method in this embodiment includes:

[0236] 601. The terminal device sends an access request to the network device, and correspondingly, the network device receives the access request from the terminal device.

[0237] In this embodiment, for step 601, please refer to Figure 4 the relevant description of step 401 in the embodiment shown, and details are not described here again.

[0238] 602. The network device determines the second characteristic information.

[0239] After receiving an access request, the network device may determine second feature information corresponding to the terminal device. The second feature information is information used by the network device to indicate the device type of the terminal device to the terminal device, and the second feature information may refer to the specific parameters included in the first feature information.

[0240] This embodiment may be implemented based on the premise of the four cases in step 402 of the embodiment shown in Figure 4 and the indication method of the terminal type, which will not be elaborated here.

[0241] In this embodiment, the first channel may be a PDCCH, or it may be other channels, such as a PDSCH or a PUSCH. Specifically, it is not limited here. In this embodiment, taking the device type as an example for the second feature information, when the network device allows the terminal device to access the network, the first repetition number of the first channel is associated with the second feature information. Exemplarily, when the device type of the terminal device is a legacy UE, the first repetition number may be 1 or a first predefined value. When the device type of the terminal device is terminal device type 1, the first repetition number may be 16; when the device type of the terminal device is terminal device type 2, the first repetition number may be 4. The above values are only examples and are not limited here specifically.

[0242] Exemplarily, the second feature information may be aggregation level information. The aggregation level information indicates the aggregation level, the candidate control channel information indicates the number of candidate PDCCHs, the aggregation level includes {1, 2, 4, 8, 16}, and the corresponding number of candidate PDCCHs at this aggregation level. The repetition times of the PDCCH are associated with the aggregation level and / or the number of candidate PDCCHs. For example, the aggregation level 16 is associated with the repetition times of N, the aggregation level 8 is associated with the repetition times of 2N, the aggregation level 4 is associated with the repetition times of 4N...; the association between the repetition times and the number of candidate PDCCHs includes: for example, in Table 5, the first column is the aggregation level, the second column is the number of candidate PDCCHs corresponding to different aggregation levels. The number of candidate PDCCHs corresponding to the aggregation levels 1, 2, 4, 8, 16 includes (n0, n1, n2, n3, n4, n5, n6, n8), where n0, n1, n2, n3, n4, n5, n6, n8 may correspond to the number of candidate PDCCHs being 0, 1, 2, 3, 4, 5, 6, 8; or n0, n1, n2, n3, n4, n5, n6, n8 may correspond to different positive integers. In this embodiment, a specific association method may be set, for example, a certain aggregation level corresponds to one repetition time. Exemplarily, the aggregation level 1 corresponds to the repetition times of m1 or the aggregation level 2 corresponds to the repetition times of m2, where m1 and m2 are positive integers; or different numbers of candidate PDCCHs may correspond to one repetition time. For example, the more the number of candidate PDCCHs, the smaller the repetition times. The number of candidate PDCCHs being n8 corresponds to the repetition times of 1, and the number of candidate PDCCHs being n1 corresponds to the repetition times of 8. Specifically, this association relationship may be pre-configured in the network device and the terminal device, or may be configured in other ways. For example, the network device notifies the terminal device through an RRC message. Specifically, it is not limited here. For example, this association relationship may be determined according to the first feature information or the second feature information

[0243] Aggregation level Number of candidate PDCCHs Aggregation level 1 n0, n1, n2, n3, n4, n5, n6, n8, Aggregation level 2 n0, n1, n2, n3, n4, n5, n6, n8, Aggregation level 4 n0, n1, n2, n3, n4, n5, n6, n8, Aggregation level 8 n0, n1, n2, n3, n4, n5, n6, n8, Aggregation level 16 n0, n1, n2, n3, n4, n5, n6, n8,

[0244] Table 5

[0245] 603. The network device sends the second feature information to the terminal device. Correspondingly, the terminal device receives the second feature information from the network device.

[0246] After the network device determines the aggregation level information or the candidate control channel information according to the first repetition times, it sends the aggregation level information or the candidate control channel information to the terminal device through the second feature information, and the terminal device receives the second feature information.

[0247] 604. The terminal device determines the first repetition times.

[0248] After receiving the above second feature information, the terminal device may determine a first repetition count according to a pre-configured association relationship, and the association relationship may indicate one of the second feature information and its corresponding candidate PDCCH numbers. Exemplarily, taking the aggregation level information or candidate control channel information as an example of the second feature information, the terminal device selects a corresponding first repetition count from the candidate PDCCH numbers corresponding to the aggregation level information or candidate control channel information according to the pre-configured association relationship. The aggregation level or candidate control channel may be indicated by the network device to the terminal device through a high-layer signaling or a physical layer signaling. The high-layer signaling may be an RRC signaling or a medium access control control element (MAC CE), and the physical layer signaling may be a DCI. Specifically, it is not limited here.

[0249] 605. The terminal device transmits a first channel.

[0250] In this embodiment, step 605 may refer to Figure 4 the relevant description of step 407 in the embodiment shown, which will not be elaborated here.

[0251] In this embodiment, the terminal device obtains the first repetition count of the first channel by matching the second feature information sent by the network device with the association relationship, without blindly detecting the PDCCH, reducing the use of DCI, improving the network access processing speed and reducing the DCI overhead, and being able to save network resources and improve communication efficiency.

[0252] 2.2. The network device sends a first information directly including a repetition count set to the terminal device:

[0253] In this embodiment, the network device directly sends a repetition count set to the terminal device. Specifically, among the repetition counts indicated by the repetition count set, the repetition count of the PDCCH may be associated with the repetition count of the PDSCH, or may be associated with the repetition count of the PUSCH.

[0254] 2.2.1. There is an association relationship between the repetition count of the PDCCH and the repetition count of the PDSCH. The terminal device may determine the repetition count of the PDSCH according to the repetition count of the PDCCH, or determine the repetition count of the PDCCH according to the repetition count of the PDSCH, so as to reduce the network resources occupied by the indication information of the PDSCH or PDCCH:

[0255] Please refer to Figure 7 , and another process of the communication method in this embodiment includes:

[0256] 701. The terminal device sends an access request to the network device. Correspondingly, the network device receives the access request from the terminal device.

[0257] In this embodiment, step 701 may refer to Figure 4 the relevant description of step 401 in the embodiment shown, which will not be elaborated here.

[0258] 702. The network device determines a first set of repetition times and a second set of repetition times.

[0259] This embodiment can be implemented based on the four cases in step 402 in the embodiment shown and the indication method of the terminal type, which will not be elaborated here. Figure 4 In a possible implementation manner, the first repetition times of the first channel are associated with the first characteristic information of the terminal device. Exemplarily, taking the device type as the first characteristic information, when the network device allows the terminal device to access the network, if the device type of the terminal device is a legacy UE, the network device may determine that the first repetition times are 1 or a first predefined value. If the device type of the UE is terminal device type 1, the network device may determine that the first repetition times are 16; if the device type of the terminal device is terminal device type 2, the network device may determine that the first repetition times are 4. The above values are only examples and are not specifically limited here. The second repetition times of the second channel are determined in the same way as the first repetition times, which will not be elaborated here, but there may be a linear operation relationship between the second repetition times and the first repetition times.

[0260] After the network device determines the first repetition times and the second repetition times, it may determine the first set of repetition times corresponding to the first repetition times and the second set of repetition times corresponding to the second repetition times according to a predefined rule or table or based on the access requests of multiple received terminal devices. Optionally, the network device may also determine the first set of repetition times or the second set of repetition times according to the first characteristic information.

[0261]

[0262] 703. The network device sends the first set of repetition times and the second set of repetition times to the terminal device. Correspondingly, the terminal device receives the first set of repetition times and the second set of repetition times from the network device.

[0263] After the network device determines the first set of repetition times and the second set of repetition times, it may send the first set of repetition times and the second set of repetition times to the terminal device through an RRC message. When there is only one repetition time in the second set of repetition times, this repetition time is the first parameter. When there are multiple repetition times in the second set of repetition times, the terminal device may select one repetition time from the second set of repetition times as the first parameter through the first indication information sent by the network device.

[0264] 704. The terminal device determines the first repetition times and the second repetition times.

[0265] When the first repetition count set indicates a maximum repetition count, the terminal device may determine multiple repetition counts indicated by the maximum repetition count according to a predefined rule or table, and determine a first repetition count from the multiple repetition counts according to the first indication information; when the first repetition count set indicates multiple repetition counts, the terminal device may directly determine the first repetition count according to the first indication information, and then calculate a second repetition count from the first repetition count and the second repetition count set through a linear operation algorithm. Specifically, when the second repetition count set includes only one repetition count, this repetition count is the first parameter and may be directly calculated with the first repetition count to obtain the second repetition count; when the second repetition count set includes multiple repetition counts, the terminal device may first indicate the first parameter in the second repetition count set through 1-bit data in the first indication information, and then calculate the second repetition count through linear calculation of the first parameter and the first repetition count.

[0266] Exemplarily, when the second repetition count set includes only one repetition count, for example, the first indication information (such as DCI) indicates the first repetition count X of PDCCH, and the network device indicates the first parameter Y of PDSCH to the terminal device through an RRC message, then the second repetition count of PDSCH may be determined according to X and Y, and this determination method may be addition, multiplication, and other linear operation relationships. Example: The first repetition count of PDCCH indicated in DCI is 2, and the network device indicates the first parameter of PDSCH to the terminal device through an RRC message as 4, then the second repetition count of PDSCH may be 2 * 4 = 8 times. When the second repetition count set includes multiple repetition counts, the first repetition count of PDCCH indicated in DCI is 2, and the network device indicates the second repetition count set of PDSCH to the terminal device through an RRC message as {1, 2, 4, 8}, then the terminal device may first indicate the first parameter in the second repetition count set through DCI, and then multiply the first parameter by the first repetition count. It may also first multiply the second repetition counts by the first repetition count and take the union with the second repetition count set, then the actual repetition count set of PDSCH may be {1, 2, 4, 8, 16}, and then the terminal device indicates a value in the actual repetition count set through DCI to obtain the second repetition count. Specifically, the first channel may be PDCCH, and the second channel may be PDSCH, or the first channel may be PDSCH, and the second channel may be PDCCH. Specifically, it is not limited here.

[0267] The above linear operation relationship is used to represent the relationship between the PDSCH repetition number set or the PDSCH repetition number and one or more of the PDCCH aggregation level, the device type of the terminal device supported by the network device, and the capabilities (such as the number of receiving antennas) of the terminal device supported by the network device. Example: The repetition number of the PDSCH is related to the device type of the terminal device supported by the network device. For the terminal device of terminal device type 1, the repetition number of the PDSCH is larger. For the terminal device of terminal device type 2, the repetition number of the PDSCH is smaller. The legacy UE corresponds to an even smaller repetition number. Or, if the aggregation level of the PDCCH is large, the decoding performance of the PDCCH is better and the coverage is better. At this time, the repetition number of the PDSCH can be a smaller repetition number. In summary, the linear operation algorithm can be adjusted adaptively.

[0268] 705. The network device sends the first channel and the second channel to the terminal device. Correspondingly, the terminal device receives the first channel and the second channel from the network device.

[0269] In this embodiment, the terminal device receives the PDCCH according to the determined first repetition number and receives the PDSCH according to the second repetition number, or receives the PDSCH according to the first repetition number and receives the PDCCH according to the second repetition number.

[0270] In this embodiment, the network device indicates the repetition numbers of the first channel and the second channel to the terminal device. By only indicating the repetition number of one of the channels through DCI or requiring less bit data for indicating the second repetition number, network resources can be saved and communication efficiency can be improved.

[0271] 2.2.2. The repetition number of the PDCCH is related to the repetition number of the PUSCH

[0272] The terminal device can determine the repetition number of the PUSCH according to the repetition number of the PDCCH or determine the repetition number of the PDCCH according to the repetition number of the PUSCH based on the possible association relationship between the repetition number of the PDCCH and the repetition number of the PUSCH, reducing the network resources occupied by the indication information of the PUSCH or the PDCCH:

[0273] Please refer to Figure 8 , another process of the communication method in this embodiment includes:

[0274] 801. The terminal device sends an access request to the network device. Correspondingly, the network device receives the access request from the terminal device.

[0275] 802. The network device determines the first repetition number set and the second repetition number set.

[0276] 803. The network device sends the first repetition count set and the second repetition count set to the terminal device. Correspondingly, the terminal device receives the first repetition count set and the second repetition count set from the network device.

[0277] In this embodiment, for steps 801 - 803, please refer to Figure 7 the relevant descriptions of steps 701 - 703 in the illustrated embodiment, which will not be elaborated here.

[0278] 804. The terminal device determines the first repetition count and the second repetition count.

[0279] The determination of the first repetition count and the second repetition count can refer to Figure 7 the determination method of step 704 in the illustrated embodiment, which will not be elaborated here.

[0280] Exemplarily, the first channel can be PDCCH, and the second channel can be PUSCH, or the first channel can be PUSCH, and the second channel can be PDCCH. Specifically, it is not limited here.

[0281] 805. The terminal device transmits the first channel and the second channel.

[0282] In this embodiment, when the first channel is PDCCH and the second channel is PUSCH, the terminal device can receive PDCCH according to the first repetition count and send PUSCH according to the second repetition count.

[0283] In another example, when the first channel is PUSCH and the second channel is PDCCH, the terminal device can also send PUSCH according to the first repetition count and receive PDCCH according to the second repetition count. Specifically, it is not limited here.

[0284] In this embodiment, when the network device indicates the repetition counts of the first channel and the second channel to the terminal device, by using DCI to indicate only the repetition count of one of the channels or the bit data required to indicate the second repetition count is less, it can save network resources and improve communication efficiency.

[0285] II. The terminal device processes the first maximum repetition count or the first repetition count set from the network device through an adjustment factor to determine the actual first repetition count for receiving the first channel, saving the computing resources occupied by the base station to obtain the device type of this terminal device:

[0286] Please refer to Figure 9 , another process of the communication method in this embodiment includes:

[0287] 901. The terminal device sends an access request to the network device. Correspondingly, the network device receives the access request from the terminal device.

[0288] In this embodiment, step 901 can refer to Figure 4 the relevant description of step 401 in the embodiment shown, and details are not described herein again.

[0289] 902. The network device determines the first maximum number of repetitions or the first set of repetition numbers.

[0290] This embodiment can be implemented with reference to the premise of the four cases in step 402 and the indication method of the terminal type in the embodiment shown in Figure 4 and details are not described herein again.

[0291] In this embodiment, when the network device determines that the terminal device is allowed to access the network, the first number of repetitions of the first channel is associated with the device type. The first channel can be PDCCH, or it can be other channels, such as PDSCH and PUSCH, and specific details are not limited herein. Exemplarily, when the device type of the terminal device is a legacy UE, the first number of repetitions can be 1 or the first predefined value. When the device type of the terminal device is terminal device type 1, the first number of repetitions can be 16; when the device type of the terminal device is terminal device type 2, the first number of repetitions can be 4. The above values are only examples and specific details are not limited herein.

[0292] After the network device determines the first number of repetitions, the second maximum number of repetitions or the second set of repetition numbers corresponding to the terminal device can be determined based on the first number of repetitions. Optionally, the network device can also determine the first maximum number of repetitions or the combination of the first number of repetitions according to the second characteristic information.

[0293] 903. The network device sends the first number of repetitions or the first set of repetition numbers to the terminal device. Correspondingly, the terminal device receives the first maximum number of repetitions or the first set of repetition numbers from the network device.

[0294] The first maximum number of repetitions or the second set of repetition numbers can be configured by higher layer signaling or physical layer signaling, such as RRC signaling, or MAC CE, or physical layer signaling, such as DCI.

[0295] 904. The terminal device determines the first number of repetitions according to the adjustment factor.

[0296] After receiving the above first maximum repetition number or the first repetition number set, the terminal device may determine the first repetition number according to an adjustment factor from the above first maximum repetition number or the first repetition number set. In one example, after receiving the first maximum repetition number from the network device, the terminal device may adjust the first maximum repetition number according to the adjustment factor to obtain the second maximum repetition number actually corresponding to the terminal device. The terminal device may obtain multiple possible repetition numbers from the second maximum repetition number according to a predefined rule or table, and then determine the first repetition number from the multiple possible repetition numbers according to the first indication information from the network device. The first indication information may be a physical layer signaling or a high layer signaling. The physical layer may be DCI, and the high layer signaling may be RRC or MAC CE. The network device may pre-configure the adjustment factor for the terminal device through high layer signaling, or may pre-define the adjustment factor in the protocol between the network device and the terminal device, or may indicate the adjustment factor to the terminal device through physical layer signaling, or may enable the terminal device to determine the adjustment factor through the first characteristic information.

[0297] In another example, after receiving the first repetition number set sent by the network device, the terminal device may adjust the first repetition number set according to the adjustment factor to obtain the second repetition number set actually corresponding to the terminal device. The terminal device may determine the above first repetition number from the second repetition number set according to the first indication information sent by the network device.

[0298] Exemplarily, taking the first maximum repetition number or the first repetition number set of the legacy UE included in the RRC message sent by the network device as an example, the adjustment factor of terminal device type 1 may be configured as 4, the adjustment factor of terminal device type 2 may be configured as 2, and the adjustment factor of the legacy UE is 1 or not set. The terminal device may apply the adjustment factors of each terminal type to the first maximum repetition number of the legacy UE. For example, if the first maximum repetition number is 8, the maximum repetition number of terminal device type 1 is 32, the maximum repetition number of terminal device type 2 is 16, and the maximum repetition number of the legacy UE is 8. After the terminal device obtains the maximum repetition number, it may obtain the repetition number set by looking up a table, and then determine the first repetition number according to the first indication information such as DCI indication. The adjustment factor may also act on the first repetition number set. The repetition number set of the legacy UE is {1, 2, 4, 8}, the repetition number set of terminal device type 2 is {2, 4, 8, 16}, and the repetition number set of terminal device type 1 is {4, 8, 16, 32}. In this example, the adjustment factor of terminal device type 1 or terminal device type 2 may also be 1. If not indicated or not configured, the adjustment factor defaults to 1.

[0299] The above adjustment factor is configured by the network device for the terminal device through high-layer signaling or physical-layer signaling. The high-layer signaling may include RRC messages or MAC CE, and the physical-layer signaling is the first indication information such as DCI; or the above adjustment factor is predefined by the network device; or the above adjustment factor is related to the first characteristic information. Exemplarily, the adjustment factor may be indicated by DCI. For example, 1 or 2 bits in the DCI indicate the value of the adjustment factor in the adjustment factor set, and this adjustment factor set may be configured by RRC signaling, or the adjustment factor is a value in the repetition number set of legacy UEs, or a value in the repetition number set of terminal device type 1, or a value in the repetition number set of terminal device type 2. Exemplarily, the adjustment factor may be indicated by RRC. For example, an RRC signaling configures a value in the adjustment factor set, and this adjustment factor set may be predefined, or an RRC signaling configures a value in the repetition number set of legacy UEs as the adjustment factor, or an RRC signaling configures a value in the repetition number set of terminal device type 1 as the adjustment factor, or an RRC signaling configures a value in the repetition number set of terminal device type 2 as the adjustment factor. Exemplarily, the adjustment factor is determined according to the first characteristic information. Since the first characteristic information of terminal device type 1 is different from that of terminal device type 2, different adjustment factors are defined. For example, the adjustment factor of a terminal device with 1 receiving antenna is greater than that of a terminal device with 2 receiving antennas, and the adjustment factor of a terminal device with strong receiving ability is less than that of a terminal device with weak receiving ability, that is, the repetition number of a terminal device with strong receiving ability is less than that of a terminal device with weak receiving ability.

[0300] 905. The terminal device transmits the first channel.

[0301] In this embodiment, step 905 may refer to Figure 4 the relevant description of step 407 in the embodiment shown, which will not be elaborated here.

[0302] In the embodiment of the present application, after the terminal device adjusts the first maximum repetition number or the first repetition number set sent by the network device through the adjustment factor, the first repetition number of the first channel corresponding to this terminal device is obtained, improving the flexibility of network configuration.

[0303] Next, the communication device in the embodiment of the present application will be described. Please refer to Figure 10 , in the embodiment of the present application, a structure of the communication device 1000 includes:

[0304] A transceiver unit 1001, configured to receive the first information from the network device, determine the first repetition number of the first channel according to the first repetition number set, and transmit the first channel according to the first repetition number;

[0305] A processing unit 1002, configured to determine access status information and / or a first set of repetition counts for a first channel according to first information, the first set of repetition counts including at least one repetition count, and determine whether to access the network according to the access status information.

[0306] In this embodiment, the access status information is determined by a bit status in the first information, the bit status is used to indicate that the terminal device is not allowed to access the network, and the bit status is related to the first characteristic information of the terminal device.

[0307] In this embodiment, the first information includes repetition level information, and the processing unit 1002 is specifically configured to:

[0308] Determine the first set of repetition counts according to the repetition level information.

[0309] In this embodiment, the transceiver unit 1001 is specifically configured to:

[0310] Determine a first repetition count according to a first maximum repetition count and the first set of repetition counts, the first maximum repetition count being configured by a radio resource control message.

[0311] In this embodiment, the repetition level information includes a first value, the first value being used to indicate that the first repetition count is 1, or being used to indicate that the first repetition count is a first predefined value.

[0312] In this embodiment, the first information includes second characteristic information, the second characteristic information being used to determine the first set of repetition counts, and the second characteristic information being associated with the first repetition count.

[0313] In this embodiment, the first information is carried in a radio resource control message;

[0314] The transceiver unit 1001 is specifically configured to:

[0315] Determine a first repetition count according to a first indication information and the first set of repetition counts, the first indication information coming from a network device.

[0316] In this embodiment, the transceiver unit 1001 is further configured to:

[0317] Determine a second repetition count for a second channel according to the first repetition count and a first parameter, the first parameter coming from a network device;

[0318] The first channel is a physical downlink control channel, and the second channel is a physical downlink shared channel; or,

[0319] The first channel is a physical downlink shared channel, and the second channel is a physical downlink control channel; or,

[0320] The first channel is a physical downlink control channel, and the second channel is a physical uplink shared channel; or,

[0321] The first channel is a physical uplink shared channel, and the second channel is a physical downlink control channel.

[0322] In this embodiment, the transceiver unit 1001 is further configured to:

[0323] Perform a linear operation on the first repetition number and the first parameter to obtain a second repetition number.

[0324] In this embodiment, the communication device may perform the operations performed by the terminal device in the foregoing Figures 4 to 8 embodiment shown, and details are not described herein again.

[0325] Next, the communication device in the embodiment of the present application will be described. Please refer to Figure 11 , in the embodiment of the present application, another structure of the communication device 1100 includes:

[0326] A processing unit 1101, configured to determine first feature information of the terminal device;

[0327] A transceiver unit 1102, configured to send first information to the terminal device according to the first feature information, and transmit a first channel according to the first repetition number. The first information is used to indicate access status information and / or a first repetition number set of the first channel. The first repetition number set includes at least one repetition number, and the first repetition number is determined according to the first feature information.

[0328] In this embodiment, the access status information is determined by a bit status in the first information. The bit status is used to indicate that the terminal device is not allowed to access the network, and the bit status is related to the first feature information of the terminal device.

[0329] In this embodiment, the first information includes repetition level information and a first maximum repetition number. The repetition level information is used to indicate the first repetition number set, and the first maximum repetition number is determined according to the first feature information.

[0330] In this embodiment, the repetition level information includes a first value, and the first value is used to indicate that the first repetition number is 1, or is used to indicate that the first repetition number is a first predefined value.

[0331] In this embodiment, the first information includes second feature information, and the second feature information is used to determine the first repetition number set. The second feature information is associated with the first repetition number.

[0332] In this embodiment, the transceiver unit 1102 is further configured to:

[0333] Determine first indication information according to the first feature information, where the first indication information is used to determine the first repetition number.

[0334] In this embodiment, the first information further includes a first parameter, and the first parameter is used to determine the second repetition number of the second channel.

[0335] The first channel is a physical downlink control channel, and the second channel is a physical downlink shared channel; or,

[0336] The first channel is a physical downlink shared channel, and the second channel is a physical downlink control channel; or,

[0337] The first channel is a physical downlink control channel, and the second channel is a physical uplink shared channel; or,

[0338] The first channel is a physical uplink shared channel, and the second channel is a physical downlink control channel.

[0339] In this embodiment, the communication device can perform the operations performed by the network device in the foregoing Figures 4 to 8 illustrated embodiment, which will not be elaborated herein.

[0340] Please refer to Figure 12 , in the embodiment of the present application, another structure of the terminal device 1200 includes:

[0341] A transceiver unit 1201, configured to receive a first maximum repetition number or a first repetition number set from a network device, where the first repetition number set includes at least one repetition number, and transmit a first channel according to the first repetition number;

[0342] A processing unit 1202, configured to determine a first repetition number of the first channel according to the first maximum repetition number or the first repetition number set and an adjustment factor.

[0343] In this embodiment, the processing unit 1202 is specifically configured to:

[0344] Determine a second maximum repetition number according to the first maximum repetition number and the adjustment factor;

[0345] Determine a first repetition number according to the second maximum repetition number and first indication information, where the first indication information comes from the network device.

[0346] In this embodiment, the processing unit 1202 is specifically configured to:

[0347] Determine a second repetition number set according to the first repetition number set and the adjustment factor;

[0348] Determine a first repetition number according to the second repetition number set and first indication information, where the first indication information comes from the network device.

[0349] In this embodiment, the adjustment factor is preconfigured by the network device through high-layer signaling; or,

[0350] The adjustment factor is predefined by the network device; or,

[0351] The adjustment factor is indicated by the network device through physical layer signaling; or,

[0352] The adjustment factor is related to the first characteristic information.

[0353] In this embodiment, the communication device may perform the operations performed by the terminal device in the foregoing Figure 9 illustrated embodiment, and details are not described herein again.

[0354] Please refer to Figure 13 , in the embodiment of the present application, another structure of the communication device 1300 includes:

[0355] A processing unit 1301, configured to determine the device type of the terminal device;

[0356] A sending unit 1302, configured to send a first maximum number of repetitions or a first set of repetition numbers to the terminal device according to the device type, and transmit a first channel according to the first number of repetitions, where the first number of repetitions is determined according to the first characteristic information, and the first maximum number of repetitions or the first set of repetition numbers is determined according to the first number of repetitions and the adjustment factor.

[0357] In this embodiment, the sending unit 1302 is further configured to:

[0358] Pre-configure the adjustment factor through high-layer signaling; or,

[0359] Pre-define the adjustment factor; or,

[0360] Indicate the adjustment factor through physical layer signaling; or,

[0361] Determine the adjustment factor according to the first characteristic information.

[0362] In this embodiment, the communication device may perform the operations performed by the network device in the foregoing Figure 9 illustrated embodiment, and details are not described herein again.

[0363] Corresponding to the method embodiment and the virtual device embodiment provided by the present application, the embodiment of the present application further provides a communication device, and the hardware structure of the communication device will be introduced below.

[0364] Figure 14 The structural schematic diagram of a communication device provided by the embodiment of the present application is given. The communication device 1400 may be Figures 4 to 9 the terminal device in, and is used to implement the method for the terminal device in the foregoing method embodiment. The communication device may also be Figures 4 to 9 the network device in, and is used to implement the method corresponding to the network device in the foregoing method embodiment. The specific functions may refer to the description in the foregoing method embodiment.

[0365] The communication device 1400 includes one or more processors 1401. The processor 1401, which can also be referred to as a processing unit, can implement certain control functions. The processor 1401 can be a general-purpose processor or a dedicated processor, etc. For example, it includes: a baseband processor, a central processor, an application processor, a modem processor, a graphics processor, an image signal processor, a digital signal processor, a video codec processor, a controller, a memory, and / or a neural network processor, etc. The baseband processor can be used to process communication protocols and communication data. The central processor can be used to control the communication device 1400, execute software programs, and / or process data. Different processors can be independent devices or integrated in one or more processors. For example, they can be integrated on one or more application-specific integrated circuits.

[0366] Optionally, the communication device 1400 includes one or more memories 1402 for storing instructions 1404 that can be run on the processor, enabling the terminal device 1400 to execute the methods described in the above method embodiments. Optionally, the memory 1402 can also store data. The processor and the memory can be set separately or integrated together.

[0367] Optionally, the communication device 1401 can include instructions 1403 (sometimes also referred to as code or program), and the instructions 1403 can be run on the processor, enabling the communication device 1400 to execute the methods described in the above embodiments. Data can be stored in the processor 1401.

[0368] Optionally, the communication device 1400 can further include a transceiver 1405 and an antenna 1406. The transceiver 1405 can be referred to as a transceiver unit, a transceiver, a transceiver circuit, a transceiver, an input / output interface, etc., and is used to implement the transceiver function of the communication device 1400 through the antenna 1406.

[0369] Optionally, the communication device 1400 can further include one or more of the following components: a wireless communication module, an audio module, an external memory interface, an internal memory, a universal serial bus (USB) interface, a power management module, an antenna, a speaker, a microphone, an input / output module, a sensor module, a motor, a camera, or a display screen, etc. It can be understood that in some embodiments, the UE 1400 can include more or fewer components, or certain components are integrated, or certain components are split. These components can be implemented by hardware, software, or a combination of software and hardware.

[0370] The processor 1401 and transceiver 1405 described in this application can be implemented on an integrated circuit (IC), analog IC, radio frequency integrated circuit (RFID), mixed-signal IC, application specific integrated circuit (ASIC), printed circuit board (PCB), or electronic device, etc. Implementing the communication device described herein can be an independent device (e.g., an independent integrated circuit, mobile phone, etc.), or can be a part of a larger device (e.g., a module that can be embedded in other devices). For details, reference can be made to the foregoing descriptions of the terminal device and network device, which will not be elaborated herein.

[0371] The transceiver unit 1001 in the communication device 1000 is equivalent to the transceiver 1405 in the communication device 1400; the processing unit 1002 in the communication device 1000 can be equivalent to the processor 1401 in the communication device 1400.

[0372] The transceiver unit 1102 in the communication device 1100 is equivalent to the transceiver 1405 in the communication device 1400; the processing unit 1101 in the communication device 1100 can be equivalent to the processor 1401 in the communication device 1400.

[0373] The transceiver unit 1201 in the communication device 1200 is equivalent to the transceiver 1405 in the communication device 1400; the processing unit 1202 in the communication device 1200 can be equivalent to the processor 1401 in the communication device 1400.

[0374] The transmitting unit 1302 in the communication device 1300 is equivalent to the transceiver 1405 in the communication device 1400; the processing unit 1301 in the communication device 1300 can be equivalent to the processor 1401 in the communication device 1400.

[0375] An embodiment of this application provides a communication device, which can be used in the foregoing various embodiments. The communication device includes means, units, and / or circuits corresponding to those for implementing the Figures 4 to 9 terminal device described in the embodiments shown. For example, the terminal device includes a transceiver module for supporting the terminal device to implement transceiver functions, and a processing module for supporting the terminal device to process signals.

[0376] Figure 15 A schematic structural diagram of a communication device provided by an embodiment of this application is given.

[0377] The communication device 1500 can be applicable to Figures 4 to 9 the method embodiments shown. For ease of explanation, Figure 15 only the main components of the communication device 1500 are shown. As Figure 15 shown, the communication device 1500 includes a processor, a memory, a control circuit, an antenna, and an input / output device. The processor is mainly used for processing communication protocols and communication data, and controlling the entire communication device 1500, executing software programs, and processing the data of software programs. The memory is mainly used for storing software programs and data. The control circuit is mainly used for converting baseband signals and radio frequency signals and processing radio frequency signals. The antenna is mainly used for transmitting and receiving radio frequency signals in the form of electromagnetic waves. The input / output device, such as a touch screen, a display screen, a microphone, a keyboard, etc., is mainly used for receiving data input by users and outputting data to users.

[0378] Taking the communication device 1500 as a mobile phone as an example, after the communication device 1500 is powered on, the processor can read the software program in the storage unit, interpret and execute the instructions of the software program, and process the data of the software program. When wireless data needs to be sent, after the processor performs baseband processing on the data to be sent, it outputs a baseband signal to the control circuit. The control circuit performs radio frequency processing on the baseband signal and then sends the radio frequency signal out in the form of electromagnetic waves through the antenna. When data is sent to the communication device 1500, the control circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal into data and processes the data.

[0379] Those skilled in the art can understand that for ease of explanation, Figure 15 only one memory and one processor are shown. In some embodiments, the communication device 1500 may include multiple processors and memories. The memory may also be referred to as a storage medium or a storage device, etc., and the embodiments of the present invention do not limit this.

[0380] As an alternative implementation, the processor may include a baseband processor and a central processor. The baseband processor is mainly used for processing communication protocols and communication data, and the central processor is mainly used for controlling the entire communication device 1500, executing software programs, and processing the data of software programs. Figure 15The processor in it integrates the functions of a baseband processor and a central processing unit. Those skilled in the art can understand that the baseband processor and the central processing unit can also be independent processors, interconnected through technologies such as a bus. The communication device 1500 can include multiple baseband processors to adapt to different network standards, and the communication device 1500 can include multiple central processing units to enhance its processing ability. Each component of the communication device 1500 can be connected through various buses. The baseband processor can also be referred to as a baseband processing circuit or a baseband processing chip. The central processing unit can also be referred to as a central processing circuit or a central processing chip. The function of processing communication protocols and communication data can be built into the processor or stored in the storage unit in the form of a software program, and the processor executes the software program to implement the baseband processing function.

[0381] In one example, an antenna and a control circuit with transceiver functions can be regarded as the transceiver unit 1510 of the communication device 1500, and a processor with processing functions can be regarded as the processing unit 1520 of the communication device 1500. As Figure 15 shown, the communication device 1500 includes a transceiver unit 1510 and a processing unit 1520. The transceiver unit can also be called a transceiver, a transceiver machine, a transceiver device, etc. Optionally, the devices in the transceiver unit 1510 for implementing the receiving function can be regarded as the receiving unit, and the devices in the transceiver unit 1510 for implementing the sending function can be regarded as the sending unit, that is, the transceiver unit 1510 includes a receiving unit and a sending unit. Exemplarily, the receiving unit can also be called a receiver, a receiver circuit, etc., and the sending unit can be called a transmitter, a transmitter circuit, etc.

[0382] The transceiver unit 1001 in the communication device 1000 is equivalent to the transceiver unit 1510 in the communication device 1500; the processing unit 1002 in the communication device 1000 can be equivalent to the processing unit 1520 in the communication device 1500.

[0383] The transceiver unit 1201 in the communication device 1200 is equivalent to the transceiver unit 1510 in the communication device 1500; the processing unit 1202 in the communication device 1200 can be equivalent to the processing unit 1520 in the communication device 1500.

[0384] The communication device 1500 in the embodiments of the present application can correspond to the terminal device in the above-mentioned various method embodiments, and the transceiver unit 1510, the processing unit 1520, etc. in the communication device 1500 can implement the functions and / or the various steps and methods implemented by the terminal device in the above-mentioned various method embodiments. For the sake of brevity, details are not described herein again.

[0385] The embodiments of the present application also provide a communication device, which can be used in the foregoing various embodiments. The communication device includes means, units, and / or circuits for implementing the functions of the network device described in the embodiments shown in Figures 4 to 9 For example, the communication device includes a transceiver unit for supporting the network device to implement the transceiver function, and a processing unit for supporting the network device to process signals. It can be understood that the first network device and the second network device are relative to a certain or some UEs. Relative to some other UEs, the functions of the first network device and the second network device can be interchanged.

[0386] Figure 16 The structural schematic diagram of a communication device provided by the embodiments of the present application is given. As shown in Figure 16 As shown, the communication device 1600 is applicable to the functions of the network device in the method embodiment shown in Figures 4 to 9 The communication device includes: a baseband device 1601, a radio frequency device 1602, and an antenna 1603. In the uplink direction, the radio frequency device 1602 receives the information sent by the terminal device through the antenna 1603 and sends the information sent by the terminal device to the baseband device 1601 for processing. In the downlink direction, the baseband device 1601 processes the information of the terminal device and sends it to the radio frequency device 1602. After the radio frequency device 1602 processes the information of the terminal device, it is sent to the terminal device through the antenna 1601.

[0387] The baseband device 1601 includes one or more processing units 16011, a storage unit 16012, and an interface 16013. The processing unit 16011 is used to support the communication device to execute the functions of the network device in the above method embodiments. The storage unit 16012 is used to store software programs and / or data. The interface 16013 is used to interact with the radio frequency device 1602. The interface includes an interface circuit for information input and output. In one implementation, the processing unit is an integrated circuit, such as one or more ASICs, or one or more DSPs, or one or more FPGAs, or a combination of these types of integrated circuits. These integrated circuits can be integrated together to form a chip. The storage unit 16012 and the processing unit 16011 can be located in the same chip, that is, an on-chip storage element. Or the storage unit 16012 and the processing unit 16011 can also be on different chips from the processing element 16011, that is, off-chip storage elements. The storage unit 16012 can be a memory or a collective term for multiple memories or storage elements.

[0388] The communication device can implement some or all of the steps in the above method embodiments in the form of a program scheduled by one or more processing units. For example, to implement Figures 4 to 9The corresponding functions of the network device. The one or more processing units may support radio access technologies of the same system, or may support radio access systems of different systems.

[0389] The transceiver unit 1102 in the communication device 1100 corresponds to the interface 16013 in the communication device 1600; the processing unit 1101 in the communication device 1100 may correspond to the processing unit 16011 in the communication device 1600.

[0390] The sending unit 1302 in the communication device 1300 corresponds to the interface 16013 in the communication device 1600; the processing unit 1301 in the communication device 1300 may correspond to the processing unit 16011 in the communication device 1600.

[0391] The communication device 1600 in the embodiments of the present application may correspond to the network device in each of the above method embodiments, and the interface 16013, the processing unit 16011, etc. in the communication device 1600 may implement the functions and / or various steps and methods performed by the network device in each of the above method embodiments. For the sake of brevity, details are not described herein again.

[0392] Those of ordinary skill in the art can realize that the units and steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. A professional technician can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present application.

[0393] In several embodiments provided in the present application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0394] When the above-mentioned functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application. The aforementioned computer-readable storage medium can be any available medium that can be accessed by a computer. Taking this as an example but not limited to: the computer-readable medium can include random access memory (RAM), read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM), universal serial bus flash disk, mobile hard disk, or other optical disc storage, magnetic disk storage medium, or other magnetic storage devices, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer. In addition, by way of example but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchlink DRAM (SLDRAM), or direct rambus RAM (DR RAM).

[0395] As described above, it is only the specific implementation manner of the present application, but the protection scope of the embodiments of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the embodiments of the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application should be subject to the protection scope of the claims.

Claims

1. A communication method, characterized in that, Applied to a terminal device or a chip of the terminal device, including: Receiving a first message, where the first message is used to determine an indication method of the device type of the terminal device from multiple options, the multiple options include a first option and a second option, the first option includes: indicating the device type of the terminal device through message 3 (Msg3) in a random access procedure, and the second option includes: indicating the device type of the terminal device through message 1 (Msg1); Using the indication method to indicate the device type of the terminal device, where the device type of the terminal device includes a reduced-capability user equipment (REDCAP UE).

2. The communication method according to claim 1, characterized in that, The device type of the terminal device is indicated by a correspondence between transmission resources and the device type; or The device type of the terminal device is indicated by a specific bit or field.

3. The communication method according to claim 2, characterized in that, The transmission resources are time-domain resources, and / or frequency-domain resources, and / or code-domain resources of a random access sequence.

4. The communication method according to any one of claims 1 - 3, characterized in that, The method further includes: Determining the indication method of the device type of the terminal device according to the first message from a network device.

5. The communication method according to any one of claims 1 - 3, characterized in that, The first message is a system information block.

6. The communication method according to any one of claims 1 - 3, characterized in that, When the indication method includes indicating the device type of the terminal device through Msg1, the indication method further includes indicating the device type of the terminal device through Msg3.

7. The communication method according to any one of claims 1 - 3, characterized in that, The method further includes: Receiving a second message, where the second message is used to determine an indication method of a second device type, and the second device type is different from the reduced-capability user equipment (REDCAP UE).

8. The communication method according to any one of claims 1 - 3, characterized in that, The method further includes: Receiving first information from a network device; Determining an access status information and / or a first repetition number set of a first channel according to the first information, where the first repetition number set includes at least one repetition number; Determining whether to access the network according to the access status information; and / or Determining a first repetition number of the first channel according to the first repetition number set, and transmitting the first channel according to the first repetition number.

9. The communication method according to any one of claims 1 - 3, characterized in that, The method further includes: Receiving a first maximum repetition number or a first repetition number set from a network device, where the first repetition number set includes at least one repetition number; Determining a first repetition number of a first channel according to the first maximum repetition number or the first repetition number set and an adjustment factor; Transmitting the first channel according to the first repetition number.

10. A communication method, characterized in that, The method applied to a network device or a chip of the network device, includes: Sending a first message to a terminal device, where the first message is used to determine an indication method of the device type of the terminal device from multiple options, the multiple options include a first option and a second option, the first option includes indicating the device type of the terminal device through message 3 (Msg3) in a random access procedure, and the second option includes indicating the device type of the terminal device through message 1 (Msg1); Determine the device type of the terminal device through Message 3 (Msg3) in the random access procedure, or through Message 1 (Msg1), where the device type of the terminal device includes a reduced-capability user equipment (REDCAP UE).

11. The communication method according to claim 10, characterized in that, The device type of the terminal device is indicated by the correspondence between transmission resources and the device type; or The device type of the terminal device is indicated by a specific bit or field.

12. The communication method according to claim 11, wherein The transmission resources are the time-domain resources, and / or frequency-domain resources, and / or code-domain resources of the random access sequence.

13. The communication method according to any one of claims 10-12, wherein The method further includes: Indicate the indication method of the device type of the terminal device through the first message sent to the terminal device.

14. The communication method according to any one of claims 10-12, wherein The first message is a system information block.

15. The communication method according to any one of claims 10-12, wherein When the indication method includes indicating the device type of the terminal device through Msg1, the indication method further includes indicating the device type of the terminal device through Msg3.

16. The communication method according to any one of claims 10-12, wherein The method further includes: Send a second message, where the second message is used to determine the indication method of a second device type, and the second device type is different from the reduced-capability user equipment (REDCAP UE).

17. The communication method according to any one of claims 10-12, wherein The method further includes: Determine the first characteristic information of the terminal device; Send the first information to the terminal device according to the first characteristic information, and transmit the first channel according to the first repetition count. The first information is used to indicate the access status information and / or the first repetition count set of the first channel. The first repetition count set includes at least one repetition count, and the first repetition count is determined according to the first characteristic information.

18. The communication method according to any one of claims 10-12, wherein The method further includes: Determine the first characteristic information of the terminal device; Send the first maximum repetition count or the first repetition count set to the terminal device according to the first characteristic information, and transmit the first channel according to the first repetition count. The first repetition count is determined according to the device type, and the first maximum repetition count or the first repetition count set is determined according to the first repetition count and an adjustment factor.

19. A communication device, wherein Includes: A transceiver unit, configured to receive a first message, where the first message is used to determine the indication method of the device type of the terminal device from multiple options. The multiple options include a first option and a second option. The first option includes: indicating the device type of the terminal device through Message 3 (Msg3) in the random access procedure. The second option includes: indicating the device type of the terminal device through Message 1 (Msg1); A processing unit, configured to indicate the device type of the terminal device by using the indication method, where the device type of the terminal device includes a reduced-capability user equipment (REDCAP UE).

20. The communication device according to claim 19, wherein The device type of the terminal device is indicated by the correspondence between transmission resources and the device type; or The device type of the terminal device is indicated by a specific bit or field.

21. The communication device according to claim 20, wherein The transmission resources are the time-domain resources, and / or frequency-domain resources, and / or code-domain resources of the random access sequence.

22. The communication device according to any one of claims 19-21, wherein The processing unit is further configured to determine the indication method of the device type of the terminal device according to the first message from the network device.

23. The communication device according to any one of claims 19-21, wherein The first message is a system information block.

24. The communication device according to any one of claims 19 to 21, characterized in that, When the indication method includes indicating the device type of the terminal device through Msg1, the indication method further includes indicating the device type of the terminal device through Msg3.

25. The communication device according to any one of claims 19 to 21, characterized in that, The transceiver unit is further configured to receive a second message, where the second message is used to determine an indication method for a second device type, and the second device type is different from the reduced-capability user equipment (REDCAP UE).

26. The communication device according to any one of claims 19 - 21, characterized in that, The transceiver unit is further configured to receive first information from a network device, determine a first repetition number of a first channel according to a first set of repetition numbers, and transmit the first channel according to the first repetition number; The processing unit is further configured to determine access status information and / or the first set of repetition numbers of the first channel according to the first information, where the first set of repetition numbers includes at least one repetition number, and determine whether to access the network according to the access status information.

27. The communication device according to any one of claims 19 - 21, characterized in that, The transceiver unit is further configured to receive a first maximum repetition number or a first set of repetition numbers from a network device, where the first set of repetition numbers includes at least one repetition number, and transmit a first channel according to the first repetition number; The processing unit is further configured to determine the first repetition number of the first channel according to the first maximum repetition number or the first set of repetition numbers and an adjustment factor.

28. A communication device, characterized in that, Including: A transceiver unit, configured to send a first message to a terminal device, where the first message is used to determine an indication method for the device type of the terminal device from multiple options, the multiple options include a first option and a second option, the first option includes: indicating the device type of the terminal device through message 3 (Msg3) in a random access procedure, and the second option includes: indicating the device type of the terminal device through message 1 (Msg1); A processing unit, configured to determine the device type of the terminal device through message 3 (Msg3) in a random access procedure, or through message 1 (Msg1), where the device type of the terminal device includes a reduced-capability user equipment (REDCAP UE).

29. The communication device according to claim 28, characterized in that, The device type of the terminal device is indicated by the correspondence between transmission resources and the device type; or The device type of the terminal device is indicated by a specific bit or field.

30. The communication device according to claim 29, characterized in that, The transmission resources are time-domain resources, and / or frequency-domain resources, and / or code-domain resources of a random access sequence.

31. The communication device according to any one of claims 28 - 30, characterized in that, The processing unit is further configured to indicate the indication method for the device type of the terminal device through a message sent to the terminal device.

32. The communication device according to any one of claims 28 - 30, characterized in that, The first message is a system information block.

33. The communication device according to any one of claims 28 - 30, characterized in that, When the indication method includes indicating the device type of the terminal device through Msg1, the indication method further includes indicating the device type of the terminal device through Msg3.

34. The communication device according to any one of claims 28 - 30, characterized in that, The transceiver unit is further configured to receive a second message, where the second message is used to determine an indication method for a second device type, and the second device type is different from the reduced-capability user equipment (REDCAP UE).

35. The communication device according to any one of claims 28 - 30, characterized in that, The processing unit is further configured to determine first characteristic information of the terminal device; The transceiver unit is further configured to send first information to the terminal device according to the first feature information, and transmit a first channel according to a first repetition number, where the first information is used to indicate access status information and / or a first repetition number set of the first channel, the first repetition number set includes at least one repetition number, and the first repetition number is determined according to the first feature information.

36. The communication device according to any one of claims 28 - 30, characterized in that, The processing unit is further configured to determine first feature information of the terminal device; The sending unit is further configured to send a first maximum repetition number or a first repetition number set to the terminal device according to the first feature information, and transmit a first channel according to a first repetition number, where the first repetition number is determined according to the device type, and the first maximum repetition number or the first repetition number set is determined according to the first repetition number and an adjustment factor.

37. A computer-readable storage medium, characterized in that, A computer program is stored in the computer-readable storage medium, and when the computer program runs on a computer, the computer is caused to execute the method according to any one of claims 1 to 18.

38. A computer program product, characterized in that, When the computer program product is executed on a computer, the computer executes the method according to any one of claims 1 to 18.

Images