Communication method and apparatus

Abstract

A communication method and apparatus are disclosed. The method in the embodiments of the present application is applied to a coverage extension scenario. The method includes: a network device may indicate to a terminal device whether the terminal device is authorized to access the network, and / or indicate the number of transmission repetitions of the PDCCH or the coverage level of the terminal device; and the terminal device may determine blind detection based on the indication from the network device. The technical solution of the method in the embodiments of the present application improves the flexibility of network configuration, reduces the complexity of blind detection of the terminal device, saves network resources, and improves communication efficiency.

Description

[Technical Field]

[0001] TECHNICAL FIELD Embodiments of the present application relate to the field of communications, and more particularly to communication methods and apparatuses. [Background technology]

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

[0003] When the number of receive antennas in a user equipment is small, reception of the RAR is affected. The method of repeatedly transmitting the PDCCH by the base station and receiving the PDCCH by the user equipment is used to improve the reception efficiency of the PDCCH by the user equipment and achieve the effect of coverage extension. The user equipment obtains the radio resource control (RRC) signaling on the PDSCH through blind detection to configure the maximum number of repetitions of the control channel for scheduling the RAR, and determines the maximum number of repetitions of the control channel based on the downlink control information (DCI). Kikuru The number of repetitions is determined to achieve the effect of coverage extension.

[0004] Terminal devices with different numbers of antennas or different receiving capabilities need to receive coverage extension configuration information using a fixed blind detection method, which increases the complexity of blind detection and reduces the flexibility of network configuration. Therefore, there is an urgent need for a method that can improve the flexibility and communication efficiency of network configuration. Summary of the Invention [Means for solving the problem]

[0005] The embodiments of the present application provide a communication method and apparatus for improving the flexibility of network configuration, reducing the complexity of blind detection by terminal devices, saving network resources, and improving communication efficiency.

[0006] According to a first aspect, an embodiment of the present application provides a communication method, the method including:

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

[0008] After receiving the first information, the terminal device may determine access status information of the terminal device or a first repetition number set of the first channel, or may determine both the access status information and the first repetition number set based on the first information. The first repetition number set has one or more repetition numbers, and may be a first repetition number set or a first repetition number set.

[0009] The terminal device may determine whether or not the terminal device can access the network of the network device based on the determined indication of the access status information.

[0010] The terminal device may determine a first repetition number corresponding to a first channel based on the first information and the determined first repetition number set in a predefined determination manner, and receive or transmit the first channel based on the first repetition number.

[0011] In an embodiment of the present application, the terminal device may determine whether the terminal device can access the network based on the access status information sent by the network device, thereby avoiding wasting network resources caused by the terminal device still monitoring the first channel even when access to the network is not supported, thereby saving network resources and improving communication efficiency, or may determine the first repetition number for transmitting the first channel based on the received repetition number set, thereby reducing the complexity of blind detection by the terminal device.

[0012] Referring to the first aspect, in a first implementation form of the first aspect of an embodiment of the present application, the access status information is determined based on a bit status in the first information, the bit status indicating that the terminal device is not authorized to access the network, and the bit status is related to first characteristic information of the terminal device.

[0013] The first characteristic information of the terminal device may include bandwidth (channel bandwidth), the number of supported or configured resource units (a 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 slot, a minislot, or a symbol), the number of radio frequency channels, the number of hybrid automatic repeat request (HARQ) processes, the supported peak rate, the application scenario, the delay requirement, the processing capability, the protocol version, the duplex mode (half duplex, full duplex), and the service (video surveillance and mobile broadband). the candidate control channel information includes at least one of: aggregation level information, candidate control channel information, a terminal device type, a number of transmit antennas of the terminal device, a number of receive antennas of the terminal device, a resource, a resource index, a level, a level index, an extension level, an extension level index, a repetition level, a repetition level index, a repetition count, a repetition count index, a coverage extension value, a coverage extension range index, a path loss value, a path loss range index, a reference signal received power value, a reference signal received power range index, a reference signal received quality value, a reference signal received quality range index, a channel quality information value, a channel quality information range index, a service type, a service type index, a power saving requirement, a power saving requirement index, a delay requirement, a delay requirement index, a pre-specified number of times to detect the first channel, an index of a pre-specified number of times to detect the first channel, a mobility requirement, and a mobility requirement index.

[0014] Referring to the first aspect, in a second implementation form of the first aspect of the embodiment of the present application, the first information may include repetition level information, and the repetition level information may indicate a repetition count set for the first channel.

[0015] Referring to the second implementation of the first aspect, in a third implementation of the first aspect of the present application, the first repetition number set is one or more repetition numbers limited based on a first maximum repetition number. The terminal device further receives the first maximum repetition number configured by the network device by using an RRC message. The terminal device may input the first maximum repetition number into the first repetition number set to determine one or more actual repetition numbers, and then determine the first repetition number based on the first indication information sent by the network device.

[0016] Referring to the second or third implementation form of the first aspect, in a fourth implementation form of the first aspect of an embodiment of the present application, the repetition level information includes a first value, and the first value indicates that the first repetition number is 1 or that the first repetition number is a first predefined value.

[0017] Referring to the first aspect, in a fifth implementation form of the first aspect of an embodiment of the present application, the first information includes second feature information, the second feature information is used to determine a first set of repetition numbers, and the second feature information is related to the first repetition numbers.

[0018]

[0023] Referring to the first aspect, in a sixth implementation form of the first aspect of the embodiment of the present application, when the first set of repetition numbers indicates one maximum repetition number, the terminal device may determine a plurality of repetition numbers indicated by the maximum repetition number through table walking, and determine the first repetition number from the plurality of repetition numbers based on the first indication information sent by the network device. When the first set of repetition numbers indicates a plurality of repetition numbers, the terminal device may directly determine the first repetition number based on the first indication information sent by the network device.

[0019] Referring to the sixth implementation form of the first aspect, in a seventh implementation form of the first aspect of the embodiment of the present application, the terminal device may further calculate a second repetition number of the second channel based on the determined first repetition number of the first channel and a first parameter sent by the network device. The first parameter may be a parameter obtained by directly sending by the network device, or may be obtained in other manners, for example, the first indication information sent by the network device indicates a parameter set for obtaining the first parameter.

[0020] The terminal device may determine the number of repetitions of the PDSCH based on the number of repetitions of the PDCCH, or may determine the number of repetitions of the PDCCH based on the number of repetitions of the PDSCH.

[0021] Alternatively, the terminal device may determine the number of times the PUSCH is repeated based on the number of times the PDCCH is repeated, or may determine the number of times the PDCCH is repeated based on the number of times the PUSCH is repeated.

[0022] In an embodiment of the present application, the terminal device may determine the second repetition number based on the first repetition number, which reduces the number of bits for indicating the second repetition number in the DCI transmitted by the network device and reduces DCI overhead.

[0023] Referring to the sixth or seventh implementation form of the first aspect, in an eighth implementation form of the first aspect of an embodiment of the present application, after determining the first number of iterations and receiving the first parameter, the terminal device may perform a linear operation, for example, a multiplication calculation, on the first number of iterations and the first parameter to obtain the second number of iterations.

[0024] According to a second aspect, an embodiment of the present application provides a communication method, which includes:

[0025] In a random access procedure of NR communication, a terminal device transmits a network access request to a network device, and the network device may acquire the first characteristic information of the terminal device based on the network access request of the terminal device, or may acquire the first characteristic information of the terminal device in other manners, for example, through a network query.

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

[0027] After obtaining the first characteristic information, the network device may determine whether the terminal device corresponding to the first characteristic information is authorized to access and indicate the terminal device based on the access status information. When the terminal device corresponding to the first characteristic information is authorized to access the network device, the network device may determine a first repetition number for transmitting the first channel based on the first characteristic information, determine a first repetition number set for the first channel, and then transmit the first repetition number set to the terminal device. The network device transmits the first channel to the terminal device based on the first repetition number.

[0028] In this embodiment of the present application, the network device may, based on first characteristic information of the terminal device applying for access to the network, send corresponding access status information and / or a first set of repetition numbers to the terminal device, so that the terminal device can determine the first repetition number for transmitting the first channel, which improves the flexibility of network configuration.

[0029] Referring to the second aspect, in a first implementation form of the second aspect of an embodiment of the present application, the access status information is determined based on a bit status in the first information, the bit status indicating that the terminal device is not authorized to access the network, and the bit status is related to first characteristic information of the terminal device.

[0030] Referring to the second aspect, in a second implementation form of the second aspect of the embodiment of the present application, the first information includes repetition level information and a first maximum number of repetitions, the repetition level information indicates a first set of repetitions, and the first maximum number of repetitions is determined based on the first feature information.

[0031] Referring to the second implementation form of the second aspect, in a third implementation form of the second aspect of the embodiment of the present application, the repetition level information includes a first value, and the first value indicates that the first repetition number is 1 or that the first repetition number is a first predefined value.

[0032] The first predefined value is the maximum number of iterations R max or it can be some other value. For example,

[0033]

number

[0034] and this is defined herein as limit It is never determined.

[0035] Referring to the second aspect, in a fourth implementation form of the second aspect of the embodiment of the present application, the first information includes second feature information, the second feature information is used to determine a first set of repetition numbers, and the second feature information is related to the first repetition numbers.

[0036] Referring to the second aspect, in a fifth implementation form of the second aspect of the embodiment of the present application, when a terminal device corresponding to the first characteristic information is allowed to access, after the network device determines a first repetition number set for the first channel based on the first characteristic information, the network device may further determine first indication information indicating a first repetition number in the first repetition number set, and transmit the first indication information to the terminal device.

[0037] In this embodiment of the present application, the network device configures the first indication information based on the first characteristic information, so that the accuracy of determining the first number of repetitions by the terminal device can be improved.

[0038] Referring to the fifth implementation form of the second aspect, in a sixth implementation form of the second aspect of an embodiment of the present application, the first information further includes a first parameter, and the first parameter is used to determine a second number of repetitions of the second channel by referring to the aforementioned first number of repetitions.

[0039] The first channel is a physical downlink control channel and the second channel is a physical downlink shared channel, or the first channel is a physical downlink shared channel and the second channel is a physical downlink control channel.

[0040] Alternatively, the first channel is a physical downlink control channel and the second channel is a physical uplink shared channel, or the first channel is a physical uplink shared channel and the second channel is a physical downlink control channel.

[0041] According to a third aspect, an embodiment of the present application provides a communication method, including:

[0042] In a random access procedure for NR communication, a terminal device transmits a network access request to a network device. The network device responds to the network access request based on the type of the terminal device and transmits a first maximum repetition number or a first set of repetition numbers to the terminal device. The first set of repetition numbers includes one or more repetition numbers. When there is one first set of repetition numbers, the first set of repetition numbers is equal to the first maximum repetition number.

[0043] The terminal device may receive the first maximum number of repetitions or the first set of repetitions and determine the first number of repetitions from the first maximum number of repetitions or the first set of repetitions based on the adjustment factor.

[0044] The terminal device may process the first channel based on the determined first repetition number. For example, when the first channel is a PDCCH, the terminal device may receive the PDCCH based on the first repetition number. When the first channel is a PDSCH, the terminal device may receive the PDSCH based on the first repetition number. When the first channel is a PUSCH, the terminal device may upload the PUSCH based on the first repetition number.

[0045] In this embodiment of the present application, the terminal device adjusts the first maximum repetition number or the first repetition number set sent by the network device by using an adjustment coefficient, and determines the first repetition number of the first channel corresponding to the terminal device, which improves the flexibility of the network configuration.

[0046] Referring to the third aspect, in a first implementation form of the third aspect of the embodiment of the present application, the terminal device may receive a first maximum repetition number sent by a network device, adjust the first maximum repetition number based on an adjustment factor, and obtain a second maximum repetition number actually corresponding to the terminal device. The terminal device performs table walking on the second maximum repetition number to obtain multiple repetition numbers, and then determines the first repetition number based on the indication of the first indication information sent by the network device. The first indication information may be physical layer signaling, for example, DCI, or radio resource control signaling (RRC) of higher layer signaling.

[0047] Referring to the third aspect, in a second implementation form of the third aspect of the embodiment of the present application, the terminal device may receive a first set of repetition numbers sent by the network device, and adjust the first set of repetition numbers based on an adjustment factor to obtain a second set of repetition numbers actually corresponding to the terminal device. The terminal device may determine the first repetition number based on an indication of the first indication information sent by the network device.

[0048] Optionally, the second set of iterations may include the first set of iterations.

[0049] Referring to the third aspect, or the first to second implementation forms of the third aspect, in a third implementation form of the third aspect of an embodiment of the present application, the adjustment factor may be pre-configured by the network device by using higher layer signaling, or indicated by physical layer information, or may be a pre-defined protocol setting by the network device, or may be pre-defined by the network device based on the first characteristic information and sent to the terminal device.

[0050] According to a fourth aspect, an embodiment of the present application provides a communication method, including:

[0051] In a random access procedure of 5G NR communication, a terminal device sends a network access request to a network device, and the network device may acquire first characteristic information of the terminal device based on the network access request of the terminal device or a resource of the network access request, or may acquire the first characteristic information of the terminal device in other manners, for example, through a network query.

[0052] Optionally, the first characteristic information includes two types of REDCAP UE and one type of legacy UE.

[0053] After determining the first characteristic information, the network device may match a first repetition number corresponding to the first channel based on the first characteristic information according to a predefined rule.

[0054] The network device may determine a second maximum number of repetitions or a second set of repetitions corresponding to the terminal device based on the determined first number of repetitions, and then adjust the second maximum number of repetitions or the second set of repetitions based on a preconfigured adjustment factor to obtain a corresponding first maximum number of repetitions or a first set of repetitions. The network device may transmit the first maximum number of repetitions or the first set of repetitions to the terminal device based on the determined first maximum number of repetitions or the first set of repetitions, and repeatedly transmit the first channel to the terminal device based on the first number of repetitions.

[0055] In this embodiment of the present application, the network device adjusts the maximum number of repetitions or the set of repetitions sent to the terminal device by using an adjustment factor to adapt to multiple terminal devices and improve the flexibility of the network configuration.

[0056] Referring to the fourth aspect, in a first implementation form of the fourth aspect of the embodiment of the present application, the network device may pre-configure an adjustment factor for the terminal device by using higher layer signaling, or indicate the adjustment factor for the terminal device by using physical layer information, or may set the adjustment factor by pre-defining a protocol, or may define the adjustment factor based on first characteristic information when a first maximum repetition number or a first set of repetition numbers is transmitted.

[0057] According to a fifth aspect, an embodiment of the present application provides an indication method, which includes:

[0058] The terminal device indicates its device type to the network device via message 1 (Msg1), message 3 (Msg3), message A (MsgA), message 5 (Msg5), or PUSCH, which carries terminal device capability information in the random access procedure. The terminal device may indicate its device type to the network device by using the correspondence between the transmission resource and the device type, or Habi The device type of the terminal device may be indicated to the network device by using a bit or field.

[0059] In this embodiment of the present application, the terminal device indicates its device type to the network device by using the correspondence between the transmission resource and the device type, or by using a specific bit or field. Multiple indication methods are provided, thereby improving the flexibility of the network configuration.

[0060] According to a sixth aspect, an embodiment of the present application provides an indication method, which includes:

[0061] The network device indicates the device type of the terminal device reported by the terminal device using a master information block (MIB), a physical broadcast channel (PBCH), a system information block (SIB), or a PDCCH scheduling a PDSCH carrying SIB1. The system information block may be SIB1, and the network device may indicate to the terminal device that different device types of the terminal device correspond to different random access sequences, or indicate that the network device will report first characteristic information for identifying the type of the terminal device. For the first characteristic information, please refer to the related description on the first characteristic information in the implementation form of the first aspect.

[0062] In this embodiment of the present application, the network device identifies the device type by indicating to the terminal device that different device types support different random access sequences or reporting the first characteristic information. Multiple indication methods are provided, thereby improving the flexibility of network configuration.

[0063] According to a seventh aspect, an embodiment of the present application provides a communication device, comprising: a transceiver unit configured to receive first information from a network device, determine a first repetition number of a first channel based on a first set of repetition numbers, and transmit the first channel based on the first repetition number; and a processing unit configured to determine access status information and / or a first set of repetition numbers for the first channel based on the first information, the first set of repetition numbers including at least one repetition number, and to determine whether to access the network based on the access status information.

[0064] The communication device is configured to perform the method of the first aspect or any implementation of the first aspect.

[0065] According to an eighth aspect, an embodiment of the present application provides a communication device, comprising: a processing unit configured to determine first characteristic information of the terminal device; and a transceiver unit configured to transmit first information to a terminal device based on first characteristic information and transmit a first channel based on a first repetition number, the first information indicating access status information and / or a first set of repetition numbers for the first channel, the first set of repetition numbers including at least one repetition number, and the first repetition number being determined based on the first characteristic information.

[0066] The communication device is configured to perform the method of the second aspect or any implementation of the second aspect.

[0067] According to a ninth aspect, an embodiment of the present application provides a communication device, comprising: a transceiver unit configured to receive a first maximum number of repetitions or a first set of repetitions, the first set of repetitions including at least one repetition number, and to transmit a first channel based on the first number of repetitions; and a processing unit configured to determine a first number of repetitions for the first channel based on the first maximum number of repetitions or the first set of repetitions and an adjustment factor.

[0068] The communication device is configured to perform the method of the third aspect or any implementation of the third aspect.

[0069] According to a tenth aspect, an embodiment of the present application provides a communication device, comprising: a processing unit configured to determine first characteristic information of the terminal device; The radio communication system includes a transmitting unit configured to transmit a first maximum number of repetitions or a first set of number of repetitions to a terminal device based on first characteristic information, and to transmit a first channel based on the first number of repetitions, the first number of repetitions being determined based on the first characteristic information, and the first maximum number of repetitions or the first set of number of repetitions being determined based on the first number of repetitions and an adjustment coefficient.

[0070] The communication device is configured to perform the method of the fourth aspect or any implementation of the fourth aspect.

[0071] According to an eleventh aspect, an embodiment of the present application provides a communications device. The communications device may be a terminal device according to the fifth aspect, an electronic device configured within the terminal device, or a larger device including the terminal device. The terminal device includes corresponding means or modules configured to perform the aforementioned methods. For example, the communications 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). The processing unit is configured to receive indication information from a network device by using the transceiver unit and to transmit device type indication information to the network device by using the transceiver module. In another example, the communications 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 according to the fifth aspect. Optionally, the communications device further includes other components, such as an antenna, an input / output module, and an interface. These components may be hardware, software, or a combination of software and hardware.

[0072] According to a twelfth aspect, an embodiment of the present application provides a communication device. The communication device may be a network device according to the sixth aspect, such as a base station or a baseband device in the base station. In an optional implementation, the communication device comprises a baseband device and a radio frequency device. In another optional implementation, the communication device comprises a processing unit (sometimes also referred to as a processing module) and a transceiver unit (sometimes also referred to as a transceiver module).

[0073] The processing unit is configured to transmit first indication information to the terminal device by using the transceiver unit, and receive device type indication information from the terminal device by using the transceiver module.

[0074] In an optional implementation, the communication device comprises a processing unit, which is coupled to the storage unit and configured to 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 functions of the second network device.

[0075] According to a thirteenth aspect, an embodiment of the present application provides a communication device, the communication device including 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, the computer-executable instructions, when executed by the processor, causing the processor to perform a method in the first aspect or any one of the implementations of the first aspect, or the third aspect or any one of the implementations of the third aspect.

[0076] According to a fourteenth aspect, an embodiment of the present application provides a communication device, the communication device including 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, the computer-executable instructions, when executed by the processor, causing the processor to perform the method of the second aspect or any one of the implementations of the second aspect, or the fourth aspect or any one of the implementations of the fourth aspect.

[0077] According to a fifteenth aspect, an embodiment of the present application provides a computer-readable storage medium, the computer-readable storage medium storing a computer program, which, when executed on a computer, enables the computer to perform the method of the first aspect or any one of the implementation forms of the first aspect.

[0078] According to a sixteenth aspect, an embodiment of the present application provides a computer-readable storage medium, the computer-readable storage medium storing a computer program, which, when executed on a computer, enables the computer to perform the method of the second aspect or any one of the implementation forms of the second aspect.

[0079] According to a seventeenth aspect, an embodiment of the present application provides a computer-readable storage medium, the computer-readable storage medium storing a computer program, which, when executed on a computer, enables the computer to perform the method of the third aspect or any one of the implementation forms of the third aspect.

[0080] According to an eighteenth aspect, an embodiment of the present application provides a computer-readable storage medium, the computer-readable storage medium storing a computer program, which, when executed on a computer, enables the computer to perform the method of the fourth aspect or any one of the implementation forms of the fourth aspect.

[0081] According to a nineteenth aspect, an embodiment of the present application provides a computer-readable storage medium storing a computer program, which, when executed on a computer, enables the computer to perform the method according to the fifth aspect.

[0082] According to a twentieth aspect, an embodiment of the present application provides a computer-readable storage medium storing a computer program, which, when executed on a computer, enables the computer to perform the method according to the sixth aspect.

[0083] According to a twenty-first aspect, an embodiment of the present application provides a computer program product, which, when executed on a computer, enables the computer to perform the method of the first aspect or any one of the implementation forms of the first aspect.

[0084] According to a twenty-second aspect, an embodiment of the present application provides a computer program product, which, when executed on a computer, enables the computer to perform the method of the second aspect or any one of the implementations of the second aspect.

[0085] According to a twenty-third aspect, an embodiment of the present application provides a computer program product, which, when executed on a computer, enables the computer to perform the method of the third aspect or any one of the implementations of the third aspect.

[0086] According to a twenty-fourth aspect, an embodiment of the present application provides a computer program product, which, when executed on a computer, enables the computer to perform the method of the fourth aspect or any one of the implementations of the fourth aspect.

[0087] According to a twenty-fifth aspect, an embodiment of the present application provides a computer program product, which, when run on a computer, enables the computer to perform the method according to the fifth aspect.

[0088] According to a twenty-sixth aspect, an embodiment of the present application provides a computer program product, which, when run on a computer, enables the computer to perform the method according to the sixth aspect.

[0089] According to a twenty-seventh aspect, an embodiment of the present application provides a chip, which, when executed on a device, enables the device to perform the method of the first aspect or any one of the implementation forms of the first aspect.

[0090] According to a twenty-eighth aspect, an embodiment of the present application provides a chip, which, when executed on a device, enables the device to perform the method of the second aspect or any one of the implementations of the second aspect.

[0091] According to a twenty-ninth aspect, an embodiment of the present application provides a chip, which, when executed on a device, enables the device to perform the method of the third aspect or any one of the implementations of the third aspect.

[0092] According to a thirtieth aspect, an embodiment of the present application provides a chip, which, when executed on a device, enables the device to perform the method of the fourth aspect or any one of the implementations of the fourth aspect.

[0093] According to a thirty-first aspect, an embodiment of the present application provides a chip, which, when executed on a device, enables the device to perform the method according to the fifth aspect.

[0094] According to a thirty-second aspect, an embodiment of the present application provides a chip, which, when executed on a device, enables the device to perform the method according to the sixth aspect.

[0095] According to a thirty-third aspect, an embodiment of the present application provides a communication system, the communication system including the communication device provided in the seventh, ninth, or eleventh aspect, and the communication device provided in the eighth, tenth, or twelfth aspect. [Brief explanation of the drawings]

[0096] [Figure 1] 1 is a schematic diagram of a contention-based random access structure according to an embodiment of the present application; [Figure 2] 1 is a schematic diagram of a non-contention-based random access structure according to an embodiment of the present application; [Figure 3] FIG. 2 is a schematic diagram of a structure of transmission between a base station and a UE according to an embodiment of the present application; [Figure 4] 1 is a schematic flowchart of a communication method according to an embodiment of the present application; [Figure 5] 4 is another schematic flowchart of a communication method according to an embodiment of the present application; [Figure 6] 4 is another schematic flowchart of a communication method according to an embodiment of the present application; [Figure 7] 4 is another schematic flowchart of a communication method according to an embodiment of the present application; [Figure 8] 4 is another schematic flowchart of a communication method according to an embodiment of the present application; [Figure 9] 4 is another schematic flowchart of a communication method according to an embodiment of the present application; [Figure 10] 1 is a schematic diagram of the structure of a communication device according to an embodiment of the present application; [Figure 11] FIG. 2 is another schematic diagram of the structure of a communication device according to an embodiment of the present application; [Figure 12]FIG. 2 is another schematic diagram of the structure of a communication device according to an embodiment of the present application; [Figure 13] FIG. 2 is another schematic diagram of the structure of a communication device according to an embodiment of the present application; [Figure 14] FIG. 2 is another schematic diagram of the structure of a communication device according to an embodiment of the present application; [Figure 15] FIG. 2 is another schematic diagram of the structure of a communication device according to an embodiment of the present application; [Figure 16] FIG. 2 is another schematic diagram of the structure of a communication device according to an embodiment of the present application; DETAILED DESCRIPTION OF THE INVENTION

[0097] Hereinafter, embodiments of the present application will be described with reference to the accompanying drawings. It is obvious that the described embodiments are only some, rather than all, of the embodiments of the present application. Those skilled in the art can know that with technological development and the emergence of new scenarios, the technical solutions provided in the embodiments of the present application can also be applied to similar technical problems.

[0098] In the specification, claims, and accompanying drawings of this application, the terms "first," "second," etc. are intended to distinguish between similar objects, but not necessarily. Also in order The terms "comprises," "unit ...

[0099] Hereinafter, the technical solutions in the embodiments of the present application will be clearly described with reference to the accompanying drawings in the embodiments of the present application. In the description of the present application, " / " means "or" unless otherwise specified. For example, A / B may represent A or B. In the present application, "and / or" only describes a corresponding relationship for describing associated objects, and represents that three relationships may exist. For example, A and / or B may represent the following three cases: only A exists, both A and B exist, and only B exists. 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 means any combination of these items, including any combination of a single item or multiple items. For example, at least one of a, b, or c may refer to a, b, c, a and b, a and c, b and c, or a, b, and c, where a, b, and c may be singular or plural.

[0100] The embodiments of the present application provide a communication method and apparatus for reducing the complexity of blind detection and saving network resources.

[0101] The terminal device is, for example, a UE, and the random access network device is, for example, a base station. The procedure includes contention-based random access and non-contention-based random access. The base station may be a 4G base station eNB or a 5G base station gNB, or may be of other future communication architectures.

[0102] See the contention-based random access architecture shown in Figure 1. Step 1: The UE transmits a random access preamble sequence on the physical random access channel (PRACH). Step 1 is performed via Message 1 (Msg1). The base station obtains the preamble ID by detecting the preamble, i.e., the random access preamble identifier (RAPID).

[0103] Step 2: The base station sends a random access response (RAR) to the UE. Step 2 is performed via Msg2. Before sending the random access response, the physical downlink control channel (PDCCH) is transmitted first, and the PDCCH schedules the physical downlink shared channel (PDSCH). The random access response is carried on the PDSCH for transmission, and the RAR carries a timing advance (TA), RAPID, and a temporary cell-radio network temporary identity (TC-RNTI) corresponding to the transmission delay estimated by the base station, as well as an uplink (UL) grant required for the UE to send Msg3 in step 3. The UE adjusts the uplink timing by using the TA.

[0104] Step 3: Transmit a scheduled transmission signal based on the scheduling of the UL grant in the RAR. Step 3 is performed via Msg3, which carries the UE's identity information used for collision resolution.

[0105] Step 4: The base station sends a contention resolution message to the UE on the PDSCH. Step 4 is performed via Msg4, and this step resolves contention and collisions that occur when multiple UEs try to use the same random access resource and the same preamble for access.

[0106] See the non-contention-based random access architecture shown in Figure 2. Non-contention-based random access uses dedicated random access resources and preambles sent by the base station by using random access preamble assignment, and there is no contention or collision. Therefore, only steps 1 and 2 need to be performed, and steps 3 and 4 do not. The dedicated random access resources can be indicated by a PRACH time-frequency resource index (Mask Index).

[0107] In step 2, the base station transmits a PDSCH carrying an RAR to the UE, and the RAR carries a UL grant used to transmit TA, RAPID, TC-RNTI, and Msg3 corresponding to the transmission delay indicated in Msg1. Since the number of receive antennas in the terminal device is reduced, the coverage is small and the reception of RAR and Msg4 in the initial access process is affected. Therefore, coverage Recovery must be done through receiving, one aspect is RAR coverage The terminal device includes a reduced capability UE (REDCAP UE), and the number of antennas of the REDCAP UE may be one transmit antenna and one receive antenna (i.e., 1T1R), or one transmit antenna and two receive antennas. In addition, if the bandwidth and number of transmit antennas of the REDCAP UE are reduced, the uplink coverage will also be affected. For example, coverageRecovery also needs to be performed for transmission of the physical uplink shared channel (PUSCH). coverage It should be noted that restoration and coverage extension have the same meaning and can be interchanged as equivalents, and the details will not be explained again here.

[0108] In the LTE coverage extension technology, the PDCCH and PDSCH are configured to be repeatedly transmitted multiple times in LTE, thereby extending the coverage for transmitting the PDCCH and PDSCH by the base station and improving the accuracy of successful reception by the UE.

[0109] 1. The PDCCH is repeatedly transmitted multiple times to extend the PDCCH coverage. The maximum number of repetitions of the control channel for scheduling RAR (R max ) is configured by using RRC signaling , repeat The number of repetitions is indicated in DCI format 6-1A, which is specifically as follows:

[0110] RRC signaling (physical downlink control channel, MPDCCH) mpdcch-Number of repetitions (NumRepetition)-The maximum number of repetitions of the PDCCH for scheduling RAR in RA.

[0111] The DCI subframe repetition number field in DCI format 6-1A is used. When the field is 2 bits, , repeat The columns in the following Table 1 are shown to indicate the number of repetitions, where r1, r2, r3, and r4 indicate different repetition levels, with r1 being the level with the minimum number of repetitions and r4 being the level with the maximum number of repetitions.

[0112] [Table 1]

[0113] In example 1, if the RRC indicates that the maximum number of repetitions is 4, then, corresponding to the table above, r1 corresponds to repetition number 1, r2 corresponds to repetition number 2, and r3 corresponds to repetition number 4. For example, if a network device uses DCI , repeat If the RRC indicates that the number of repetitions is r1, the number of times the PDCCH is repeatedly transmitted is 1. In Example 2, if the RRC indicates that the maximum number of repetitions is 16, then, according to the above table, r1 corresponds to 2, r2 corresponds to 4, r3 corresponds to 8, and r4 corresponds to 16. Repeat The number of repetitions may be determined by a determined repetition level indicated by the DCI.

[0114] 2. The PDSCH is repeatedly transmitted multiple times to extend the PDSCH coverage. The maximum number of repetitions of the PDSCH carrying the RAR is configured by using RRC signaling. The PDSCH repetition level table is defined in 3GPP TS 36.213. The repetition number is indicated by using DCI format 6-1A, specifically as follows:

[0115] The maximum number of repetitions of the PDSCH corresponding to coverage extension level A is configured by using the RRC signaling pdsch--maxNumRepetition control element (CE) mode A and can be set to 16 or 32.

[0116] The repetition number field in DCI format 6-1A corresponds to the higher layer parameters in Table 2. RuP Indicates the DSCH repetition level , repeat Indicates the number of repetitions.

[0117] [Table 2]

[0118] For example, if the maximum repetition number configured in the RRC signaling is 16, the candidate repetition number set is {1, 4, 8, 16}, which is obtained by querying the table mentioned above, and the network device selects the candidate repetition number by using the DCI. Tekuru The terminal device shall refer to the pdsch-maxNumRepetitionCEmodeA parameter and the indication in the DCI. Tekuru For example, two bits in the DCI indicate the repetition number in {1, 4, 8, 16}, i.e., the number of PDSCH transmissions, and "Not configured" indicates that the PDSCH is not configured.

[0119] For the PDCCH, since a system information block (SIB) is carried on the PDSCH for transmission, the PDSCH may be scheduled by the PDCCH. The PDCCH includes one or more control channel elements (CCEs), and is specifically determined based on an aggregation level, for example, as shown in Table 3.

[0120] [Table 3]

[0121] The relationship between different aggregation levels (AL) supported by PDCCH and CCEs may be represented by the following Table 4.

[0122] [Table 4]

[0123] The control resource set (CORESET) is a new concept introduced in NR and represents the time-frequency resource set used to carry the PDCCH.

[0124] A UE may be configured with multiple CORESETs, and each CORESET can be bound to only one mapping relationship between CCEs and resource element groups (REGs). REGs are the basic unit of PDCCH resource mapping. One REG is defined as one RB on one OFDM symbol. The resource element group bundle (REG bundle) is a new concept introduced in NR. REGs are first formed into a REG bundle through time-first mapping, and then mapped to control resources in an interleaved or non-interleaved manner at the granularity of the REG bundle. One REG bundle (REG combination) includes a group of contiguous REGs 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 symbol occupied in the time domain. CCEs forming the PDCCH are mapped to a CORESET (control-resource set), which is the basic unit of a REG bundle. The REGs on the CORESET are numbered in ascending order from the time domain to the frequency domain.

[0125] A REG bundle contains L consecutive REGs.

[0126] When blindly detecting the PDCCH, the UE first obtains information about the CORESET, where the CORESET can be understood as a resource set, and the base station transmits the PDCCH on PDCCH candidate resources within the CORESET. The UE continues to transmit the PDCCH until the PDCCH is successfully decoded. , regulationsDetect all candidates through blind detection according to the rules (the rules include detecting each aggregation level, corresponding different aggregation levels have different candidates, and detecting different types of scrambling).

[0127] There may be terminal devices of different device types, for example, terminal device type 1 and terminal device type 2, and the first characteristic information of the terminal device type 1 and the terminal device type 2 is different. The first characteristic information of the terminal device may include bandwidth (channel bandwidth), the number of supported or configured resource units (a resource unit may be an RB, RE, subcarrier, RB group, REG bundle, control channel element, subframe, radio frame, slot, minislot, or symbol), the number of radio frequency channels, the number of hybrid automatic repeat request (HARQ) processes, a supported peak rate, an application scenario, a delay requirement, a processing capability, a protocol version, a duplex mode (half duplex, full duplex), and a service (video surveillance and mobile broadband). the candidate control channel information includes at least one of: aggregation level information, candidate control channel information, a terminal device type, a number of transmit antennas of the terminal device, a number of receive antennas of the terminal device, a resource, a resource index, a level, a level index, an extension level, an extension level index, a repetition level, a repetition level index, a repetition count, a repetition count index, a coverage extension value, a coverage extension range index, a path loss value, a path loss range index, a reference signal received power value, a reference signal received power range index, a reference signal received quality value, a reference signal received quality range index, a channel quality information value, a channel quality information range index, a service type, a service type index, a power saving requirement, a power saving requirement index, a delay requirement, a delay requirement index, a pre-specified number of times to detect the first channel, an index of a pre-specified number of times to detect the first channel, a mobility requirement, and a mobility requirement index.

[0128] It should be noted that the terminal device type 1 and the terminal device type 2 in the embodiment of the present application are different terminal types of REDCAP, or the terminal device type 1 can be a REDCAP UE and the terminal device type 2 can be a normal terminal device (legacy UE), or other cases. Also, there may be more than two types. This is not limited in this specification. In this embodiment of the present application, the different terminal types of the terminal device type 1 and the terminal device type 2 that are REDCAP are used as an example for explanation.

[0129] In this embodiment of the present application, the first characteristic information that can be used to represent a terminal device is described as follows:

[0130] The bandwidth (channel bandwidth) is the bandwidth supported or configured by the terminal device. The bandwidth of the terminal device in this embodiment of the present application 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 100 M. Alternatively, the bandwidth of terminal device type 1 is 20 M, and the bandwidth of terminal device type 2 is 10 M.

[0131] The number of supported or configured resource units, for example, the number of resources supported by terminal device type 1 is 48RB, and the number of resources supported by terminal device type 2 is 96RB.

[0132] The number of transmit antennas and / or the number of receive antennas particularly means that the number of transmit antenna ports and / or the number of receive antenna ports of terminal device type 1 is different from that / those of terminal device type 2. For example, the number of transmit antenna ports of terminal device type 1 is 1, the number of receive antenna ports of terminal device type 1 is 2, the number of transmit antenna ports of terminal device type 2 is 2, and the number of receive antenna ports of terminal device type 2 is 4.

[0133] The number of radio frequency channels specifically means that 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.

[0134] The number of HARQ processes particularly means that the number of HARQ processes supported by terminal device type 1 is different from that supported by terminal device type 2. For example, the number of HARQ processes supported by terminal device type 1 is 8, and the number of HARQ processes supported by terminal device type 2 is 16.

[0135] The supported peak rate specifically means that the maximum peak rate of terminal device type 1 is different from that of terminal device type 2. 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.

[0136] The application scenario specifically means that terminal device type 1 and terminal device type 2 handle different application scenarios. For example, terminal device type 1 is applicable to industrial wireless sensing, video surveillance, wearable devices, etc., while terminal device type 2 is applicable to mobile communications, video Internet access, etc.

[0137] The delay requirement specifically means that terminal device type 1 and terminal device type 2 have different transmission delay requirements, for example, the delay requirement of terminal device type 1 is 500 milliseconds, and the delay requirement of terminal device type 2 is 100 milliseconds.

[0138] The processing capability means that the terminal device type 1 and the terminal device type 2 have different channel or data processing time sequences and processing speeds, particularly under different SCS conditions. For example, the terminal device type 1 does not support complex operations, and complex operations include artificial intelligence (AI) and virtual reality (VR) rendering. The terminal device type 2 supports complex operations. For example, the processing capability of the terminal device type 1 is lower than that of the terminal device type 2. For example, the scheduling delay for scheduling the PDSCH or PUSCH by the PDCCH is different.

[0139] The protocol release specifically means that terminal device type 1 and terminal device type 2 are terminal devices of different protocol releases. For example, the protocol release supported by terminal device type 1 is Release 17, and the protocol release supported by terminal device type 2 is Release 15.

[0140] Duplex mode (half-duplex and full-duplex). For example, terminal device type 1 operates in half-duplex mode, and terminal device type 2 operates in full-duplex mode.

[0141] Services (Internet of Things applications such as video surveillance and MBB), for example, the service supported by terminal device type 1 is video surveillance, and the service supported by terminal device type 2 is MBB.

[0142] For an actual scenario in which this embodiment is applied, please refer to the transmission architecture between the base station and the UE shown in Figure 3. The base station is an eNB or a gNB, and the UE includes a terminal device type 1, a terminal device type 2, and a normal terminal device. The base station receives random access requests from the terminal device type 1, the terminal device type 2, and the normal terminal device. The terminal device type 1, the terminal device type 2, and the normal terminal device access the network and receive and transmit data between the base station.

[0143] Based on the random access architecture and the transmission architecture between the base station and the UE, the communication method in this embodiment of the present application will be described below.

[0144] In this application, a terminal device is a device having wireless transceiver functionality, which may be a fixed device, a mobile device, a handheld device (e.g., a mobile phone), a wearable device, an in-vehicle device, or a wireless device (e.g., a communication module, a modem, or a chip system) integrated within any of the above devices. Terminal devices are configured to connect people, things, machines, etc., and can be widely used in various scenarios, including, but not limited to, terminal devices in cellular communications, device-to-device communications (D2D), vehicle-to-everything (V2X), 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 wearable, smart transportation, smart city, unmanned aerial vehicles, and robots. Terminal devices can sometimes be referred to as user equipment (UE), terminal, access station, UE station, remote station, wireless communication device, user equipment, or the like. For ease of explanation, this application uses a UE as an example to describe a terminal device.

[0145] The network device in this application includes, for example, an access network device and / or a core network device. An access network device is a device having wireless transceiver functionality and configured to communicate with terminal devices. Access network devices include, but are not limited to, base stations (BTSs, NodeBs, eNodeBs / eNBs, gNodeBs / gNBs), transmission reception points (TRPs) in communication systems, base stations subsequently evolved from 3GPP, access nodes, wireless relay nodes, wireless backhaul nodes, and the like in Wi-Fi systems. A base station may be a macro base station, a micro base station, a picocell base station, a small cell, a relay station, or the like. Multiple base stations may support the above-mentioned networks using the same access technology or different access technologies. A base station may include one or more co-site or non-co-site transmission reception points. A network device may alternatively be a radio controller, a central unit (CU), and / or a distributed unit (DU) in a cloud radio access network (CRAN) scenario. The network device may alternatively be a server, a wearable device, an in-vehicle device, or the like. For example, the network device in V2X technology may be a road side unit (RSU). Hereinafter, an explanation is provided by using an example in which the access network device is a base station. Multiple network devices in a communication system may be the same type of base station or different types of base stations. A base station may communicate with a terminal device, or may communicate with a terminal device via a relay station. A terminal device may communicate with multiple base stations with different access technologies. The core network device is configured to implement functions such as mobility management, data processing, session management, and policy and charging.The names of devices implementing core network functions in different access technology systems may be different. This is not limited in this application. The 5G system is used as an example. The core network devices include an access and mobility management function (AMF), a session management function (SMF), a user plane function (UPF), or the like.

[0146] The processing performed by the terminal device based on the message sent by the network device may be performed by using an adjustment factor or may not be performed by using an adjustment factor. The processing will be described separately below.

[0147] 1. The terminal device does not process messages sent by the network device by using an adjustment factor.

[0148] In this implementation, the terminal device determines whether to access the network based on the access status information, and determines the first repetition number of the first channel based on the first repetition number set. The access status information indicates 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 monitoring the PDCCH. When the access status information indicates that the terminal device can access the network, the terminal device performs an operation of determining the first repetition number. Specifically, the access status information includes at least one bit, and the bit status and bit value may indicate whether the terminal device can access the network. For example, when the bit value is 1, this indicates that the terminal device can access the network, and when the bit value is 0, this indicates that the terminal device cannot access the network.

[0149] In practical applications, the terminal device may or may not determine the access status information, the details of which are described as follows:

[0150] 1. Determine access status information.

[0151] In this embodiment, the terminal device may determine whether the terminal device can access the network based on the access status information, see Figure 4. The procedure of the communication method in this embodiment of the present application includes the following steps:

[0152] 401: An end device sends an access request to a network device, and in response, the network device receives the access request from the end device.

[0153] In this embodiment, in a random access procedure for a terminal device to access a network, the terminal device may send an access request to a network device, and the request may include first characteristic information of the terminal device or may not include the first characteristic information, which is not limited in this embodiment.

[0154] 402: The network device determines access status information and recurrence level information.

[0155] In this embodiment, the network device may determine the access status information in the following four cases:

[0156] Case 1: The network device determines the terminal type of the terminal device based on the access request of the terminal device. The terminal type may be determined based on first characteristic information. Specifically, the first characteristic information is the time domain resource and / or frequency domain resource of the random access sequence of the terminal device. This is not particularly limited in this specification.

[0157] Case 2: After sending the access request, the terminal device may send first characteristic information to the network device via Msg3. Specifically, the first characteristic information may be the bandwidth of the terminal device, or the number of transmission antennas of the terminal device, or the number of reception antennas of the terminal device.

[0158] Case 3: After the terminal device sends an access request and accesses the network, the terminal device sends first characteristic information through a physical uplink shared channel, for example, the first characteristic information is the bandwidth of the terminal device, or the number of transmission antennas of the terminal device, or the number of reception antennas of the terminal device.

[0159] Case 4: The network device does not need to determine the first information based on the first characteristic information. The network device determines whether to allow the terminal device to access the network based on the load situation at this time. For example, when the network load is high, i.e., when the number of terminal devices accessing the network is large, REDCAP UEs or types of terminal devices are not allowed to access the network. When the network load is low, i.e., when the number of terminal devices accessing the network is small, REDCAP UEs or types of terminal devices are allowed to access the network.

[0160] In the above cases 1 to 4, when the network device determines based on the first characteristic information that the terminal device sending the access request is a REDCAP UE, if the network device does not support the terminal type, for example, the network device may only support legacy UE but does not support REDCAP UE, it is determined that the terminal device is not allowed to access the network, and if the terminal device is a legacy UE or the network device also supports REDCAP UE, it is determined that the terminal device is allowed to access the network.

[0161] The network device may indicate to the terminal device how to report the device type of the terminal device (i.e., downlink indication scheme), which includes the following: The network device may indicate the terminal device by using a master information block (MIB), a physical broadcast channel (PBCH), a system information block (SIB), or a PDCCH (the PDCCH is used to schedule the PDSCH carrying SIB1). The system information block may be SIB1. In other words, the indication information of the network device may be carried on the aforementioned channel. The indication information of the network device may be indicated by at least one bit carried on the aforementioned channel. For example, when two device types need to be indicated, one bit may be used for the indication. When three or four device types need to be indicated, two bits may be used for the indication. The network device may indicate time domain resources and / or frequency domain resources and / or code domain resources of the random access preamble corresponding to different device types. In this case, the network device may distinguish different device types of the terminal device based on the resource of the random access preamble. Alternatively, the network device may use the terminal device to report the device type. GabiThe network device may indicate that it uses a bit or field in SIB1. Alternatively, the network device may indicate that it does not need to identify the device type of the terminal device in the random access phase, that is, this may indicate that the terminal device does not need to indicate its device type to the network device. Furthermore, the network device may indicate different reporting methods corresponding to different device types of the terminal device by using multiple indication information. For example, for four device types of different terminal devices, the network device may indicate four reporting methods corresponding to the four device types by using four bits in SIB1.

[0162] Correspondingly, the indication method (i.e., uplink indication method) by which the terminal device indicates its device type to the network device includes transmission via Msg1, transmission via Msg3, transmission via message A (MsgA), transmission via message 5 (Msg5), or transmission via a PUSCH carrying UE capability information. The terminal device can indicate its device type by using the correspondence relationship between the transmission resource and the device type, or Habi The terminal device may indicate the device type by using a bit or field based on the message from the network device. Kii The notification method can be determined or according to predefined rules. TeiiThe network device may determine a notification method. For example, the network device may indicate at least one Msg1 resource corresponding to at least one device type by using the MIB. After receiving the MIB, the terminal device may determine the corresponding Msg1 resource based on the MIB and the device type, and transmit Msg1 to the network device based on the corresponding Msg1 resource. The network device may identify the corresponding device type based on the Msg1 resource. For another example, the network device may indicate that the terminal device uses one bit of the Msg3 message to report the device type by using the PBCH. For yet another example, the standard predefines that the terminal device reports the device type in MsgA.

[0163] It should be understood that the above-mentioned multiple downlink indication schemes and multiple uplink indication schemes may be combined with each other.

[0164] The network device may determine the access status information based on the first characteristic information, i.e., the network device first determines whether the terminal device can access the network based on the first characteristic information. When the terminal device cannot access the network, the network device may set a bit status indicating that the terminal device is not authorized to access the network. The bit status is access status information determined by the network device, i.e., the bit status is related to the first characteristic information. In one example, the first characteristic information may 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 supports only legacy UE and does not support REDCAP UE, the network device may set a bit status indicating that the terminal device is not authorized to access the network. Specifically, the bit status may be a bit value. Optionally, there may be terminal devices with other bit statuses corresponding to other different first characteristic information, indicating whether terminal devices of other device types are authorized to access the network.

[0165] In another example, the bit status may 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, the bit status is set to 0, i.e., the terminal device is not permitted to access the network. When the device type is legacy UE, the bit status is set to 1, i.e., the terminal device is permitted to access the network. This is not limited in this embodiment.

[0166] When the terminal device is not authorized to access the network, the information indicated by the repetition level information determined by the network device may be empty, or the repetition level information does not need to be determined in step 402.

[0167] When the terminal device is permitted to access the network, the network device may determine a first repetition number, repetition level information, and a first maximum repetition number corresponding to the first channel according to a predefined rule. The first channel is a physical channel used by the network device and the terminal device to transmit information, and may be a PDCCH. Alternatively, the first channel may be another channel, such as a PDSCH or a PUSCH.

[0168] The first number of repetitions may be the number of transmissions of the first channel transmitted by the network device.

[0169] The repetition level information reflects the possible number of repetitions of receiving the first channel by the terminal device.

[0170] The first maximum number of repetitions is used to determine the selection range of the number of repetitions with reference to the repetition level information.

[0171] The repetition level information may indicate a first repetition number set corresponding to a first channel. The first repetition number set is a set of possible repetition numbers for reception or transmission by a terminal device, and the first repetition number set may include one or more first repetition numbers. For example, when the device type of the terminal device is legacy UE, the repetition level information may be set to a first value. The first value indicates that the first repetition number is 1 or indicates that the first repetition number is a first predefined value. The first predefined value may be a maximum repetition number R max or it can be some other value. For example,

[0172]

number

[0173] The first value may be set to 1 or another value, which is not particularly limited in this specification.

[0174] In one possible example, the repetition level information of terminal device type 1 may be set to a second value, for example, 4, which indicates that the first repetition number set corresponding to the terminal device of that device type includes 4 repetition numbers. For example, 4 repetition numbers are:

[0175]

number

[0176] The network device may then configure first indication information (e.g., DCI) indicating a first repetition number in the four repetition numbers. The repetition level information of terminal device type 2 may be set to a third value, e.g., 2, indicating that the first repetition number set corresponding to the terminal device of that device type includes two repetition numbers. For example, two repetition numbers are R max , and

[0177]

number

[0178] The network device may then configure first indication information (e.g., DCI) indicating a first repetition number among the two repetition numbers.

[0179] When the access status information indicates that the terminal device is not authorized to access the network, the first information in this embodiment of the present application includes only 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 authorized to access the network, the first information includes the access status information, the repetition level information, and the first maximum repetition number. In this case, the first information may be carried by multiple messages, for example, the access status information, the repetition level information, and the first maximum repetition number are carried separately.

[0180] 403: The network device transmits access status information and / or repetition level information to the terminal device, and correspondingly, the terminal device receives access status information and / or repetition level information from the network device.

[0181] After the network device determines the access status information and the repetition level information, the network device transmits first information including the access status information and the repetition level information to the terminal device. Optionally, when the terminal device is not authorized to access the network, the repetition level information is empty, or the network device transmits only the access status information to the terminal device.

[0182] 404: The terminal device determines whether the terminal device can access the network, and if the terminal device can access the network, step 406 is performed, or if the terminal device cannot access the network, step 405 is performed.

[0183] The terminal device may determine access status information based on the received first information, and determine whether the terminal device can access the network based on the access status information. For example, when the bit status in the first information is 1, this may indicate that the terminal device can access the network, and when the bit status is 0, this may indicate that the terminal device cannot access the network. Alternatively, when the bit status has a value, this indicates that the terminal device can access the network. When the bit status has no value, the terminal device cannot access the network. This is not particularly limited in this specification.

[0184] 405: The terminal device determines that the terminal device cannot access the network.

[0185] After the terminal device determines the access status information, if the access status information indicates that the terminal device is not authorized to access the network, the terminal device determines that the terminal device cannot access the network and stops monitoring the information transmitted by the network device through the physical channel.

[0186] 406: The terminal device determines a first number of iterations.

[0187] After determining that the terminal device can access the network, the terminal device may determine repetition level information and a first maximum repetition number based on the first information, and may determine a first repetition number of the first channel based on the repetition level information. For example, when the repetition level information is 1, the terminal device does not need to blindly detect the PDCCH. The terminal device may determine that the first repetition number is 1 or a first predefined value. When the repetition level information is 2 or 4, the terminal device may determine a first repetition number set based on the repetition level information and the first maximum repetition number. In this case, the terminal device needs to blindly detect the PDCCH to obtain first indication information (e.g., DCI) in order to determine the first repetition number in the first repetition number set.

[0188] 407: The terminal device transmits a first channel.

[0189] After determining the first number of repetitions, the terminal device may receive the first channel based on the first number of repetitions. For example, when the first channel is a PDCCH, the network device transmits the PDCCH based on the first number of repetitions. Specifically, the time sequence in which the network equipment transmits the PDCCH is not limited, and the terminal device receives the PDCCH based on the first number of repetitions. The PDCCH may be a PDCCH for scheduling a system information block (SIB), a PDCCH for scheduling a PDSCH carrying an RAR, a PDCCH for scheduling a PDSCH carrying Msg4, or a PDCCH for scheduling another PDSCH carrying downlink data. When the first channel is a PDSCH, the terminal device receives the PDSCH carrying downlink data or another PDSCH based on the first number of repetitions. The PDSCH may be a PDSCH carrying an SIB, a PDSCH carrying an RAR, or a PDSCH carrying Msg4. When the first channel is a PUSCH, the step performed in step 407 may alternatively be that the UE transmits a PUSCH based on the first repetition number. The PUSCH may be a PUSCH carrying Msg3 or another PUSCH carrying uplink data. This is not particularly limited in this specification.

[0190] In an embodiment of the present application, the terminal device determines whether the terminal device can access the network based on the access status information sent by the network device, thereby avoiding wasting network resources caused by the terminal device still monitoring the first channel even when access to the network is not supported, thereby saving network resources and improving communication efficiency.

[0191] Furthermore, the terminal device determines the first number of iterations based on the repetition level information to reduce the complexity of blind detection.

[0192] 2. The network device does not need to send access status information to the terminal device.

[0193] In a practical application, the network device may not transmit the access status information to the terminal device. The access status information may be indicated by other information in the first information, indicating the repetition number set. Alternatively, the network device may not limit the type of the terminal device, i.e., different terminal devices can access the network. The network device may transmit the first information directly including the repetition number set to the terminal device. Details will be described separately below.

[0194] 2.1. The network device indicates a set of repetition numbers to the terminal device by using the first information.

[0195] In this embodiment, the terminal device may determine the first set of repetition numbers based on the repetition level information in the first information, or may determine the first set of repetition numbers based on the first feature information in the first information.

[0196] 2.1.1. The network device indicates to the terminal device whether the terminal device can access the network and the first set of repetition numbers by using repetition level information, which reduces the use of access status information and saves network resources.

[0197] See Figure 5. Another procedure of the communication method in this embodiment includes the following steps:

[0198] 501: A terminal device sends an access request to a network device, and in response, the network device receives an access request from the terminal device.

[0199] For step 501 in this embodiment, please refer to step 401 in the embodiment shown in Figure 4. The details will not be described again here.

[0200] 502: The network device determines recurrence level information.

[0201] This embodiment may be based on the four cases of step 402 in the embodiment shown in Figure 4, and the same indication method of terminal type is used, the details of which will not be described again here.

[0202] 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, but can be directly indicated by the repetition level information. For example, when the network device does not allow the terminal device to access the network, the network device can set the repetition level information to a fourth value. The fourth value can be a predefined value, for example, 0, or an invalid repetition level value is reused, indicating that the network device does not allow the terminal device to access the network.

[0203] When the terminal device is allowed to access the network, the network device may determine a first repetition number, repetition level information, and a first maximum repetition number corresponding to the first channel according to a predefined rule.

[0204] For other values ​​of the repetition level information, please refer to the relevant description of step 402 in the embodiment shown in Figure 4. The details will not be described again here.

[0205] 503: The network device sends repetition level information to the terminal device, and in response, the terminal device receives repetition level information from the network device.

[0206] The network device transmits first information including the determined repetition level information to the terminal device.

[0207] 504: The terminal device determines whether the terminal device can access the network, and when the terminal device can access the network, step 506 is performed, or when the terminal device cannot access the network, step 505 is performed.

[0208] The terminal device obtains repetition level information based on the received first information, and determines whether the terminal device can access the network based on the value of the repetition level information. For example, when the repetition level information is a value of 0, the terminal device may determine that it is not allowed to access the network and perform step 505. When the repetition level information is another value, the terminal device may determine that it is allowed to access the network and perform step 506.

[0209] 505: The terminal device stops monitoring the PDCCH.

[0210] 506: The terminal device determines a first number of iterations.

[0211] 507: The terminal device transmits a first channel.

[0212] For steps 505 to 507 in this embodiment, please refer to the relevant description of steps 405 to 407 in the embodiment shown in Figure 4. The details will not be described again here.

[0213] In an embodiment of the present application, the terminal device may determine whether the terminal device can access the network based on the access status information sent by the network device, thereby avoiding wasting resources caused by the terminal device still monitoring the first channel even when access to the network is not supported, or may determine the first repetition number for transmitting the first channel based on the received repetition number set, thereby improving the flexibility of network configuration.

[0214] Furthermore, the terminal device indicates whether the terminal device can access the network by repeatedly using the level information, which reduces information exchange, saves network resources, and improves communication efficiency.

[0215] 2.1.2. The network device indicates the first repetition number to the terminal device by using the second characteristic information, and the terminal device can obtain the first repetition number for receiving the first channel without blind detection, which saves network resources.

[0216] See Figure 6. Another procedure of the communication method in this embodiment includes the following steps:

[0217] 601: A terminal device sends an access request to a network device, and in response, the network device receives an access request from the terminal device.

[0218] For step 601 in this embodiment, please refer to the relevant description of step 401 in the embodiment shown in Figure 4. The details will not be described again here.

[0219] 602: The network device determines second characteristic information.

[0220] After receiving the access request, the network device may determine second characteristic information corresponding to the terminal device. The second characteristic information is information used by the network device to indicate the device type of the terminal device to the terminal device. The second characteristic information may be information that is used by the network device to indicate the device type of the terminal device to the terminal device. Rupa See the parameter.

[0221] This embodiment may be implemented based on the four assumptions and terminal type indication method of step 402 in the embodiment shown in Figure 4. The details will not be described again here.

[0222] In this embodiment, the first channel may be a PDCCH or another channel, for example, a PDSCH or a PUSCH. This is not particularly limited in this specification. In this embodiment, the second characteristic information is used as an example. When the network device allows the terminal device to access the network, the first repetition number of the first channel is related to the second characteristic information. For example, 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 merely examples and are not particularly limited in this specification.

[0223] For example, the second characteristic information may be aggregation level information. The aggregation level information indicates an aggregation level, and the candidate control channel information indicates the number of candidate PDCCHs, where the aggregation level includes {1, 2, 4, 8, 16} and the number of candidate PDCCHs corresponding to the aggregation level, and the PDCCH repetition number is associated with the aggregation level and / or the number of candidate PDCCHs. For example, the repetition number associated with aggregation level 16 is N, the repetition number associated with aggregation level 8 is 2N, the repetition number associated with aggregation level 4 is 4N, and so on, and the association between the repetition number and the number of candidate PDCCHs includes: For example, in Table 5, the first column is the aggregation level, and the second column is the number of candidate PDCCHs corresponding to different aggregation levels, where the number of candidate PDCCHs corresponding to aggregation levels 1, 2, 4, 8, and 16 includes (n0, n1, n2, n3, n4, n5, n6, n8), where n0, n1, n2, n3, n4, n5, n6, and n8 may correspond to the number of candidate PDCCHs 0, 1, 2, 3, 4, 5, 6, and 8. Alternatively, n0, n1, n2, n3, n4, n5, n6, and n8 may correspond to different positive integers. 、An association scheme may be configured. For example, one aggregation level corresponds to one repetition count. For example, the repetition count corresponding to aggregation level 1 is m1, or the repetition count corresponding to aggregation level 2 is m2, where m1 and m2 are positive integers. Alternatively, a different number of candidate PDCCHs may correspond to one repetition count. For example, a larger number of candidate PDCCHs indicates a smaller repetition count, and the number n8 of candidate PDCCHs corresponds to the repetition count of 1, and the number n1 of candidate PDCCHs corresponds to the repetition count of 8. Specifically, the association relationship may be preconfigured on the network device and the terminal device, or may be configured in another manner. For example, the network device notifies the terminal device via an RRC message. This is not particularly limited in this specification. For example, the association relationship may be determined based on first characteristic information or second characteristic information.

[0224] [Table 5]

[0225] 603: The network device sends second characteristic information to the terminal device, and in response, the terminal device receives the second characteristic information from the network device.

[0226] After determining the aggregation level information or the candidate control channel information based on the first number of iterations, the network device transmits the aggregation level information or the candidate control channel information to the terminal device by using the second characteristic information, and the terminal device receives the second characteristic information.

[0227] 604: The terminal device determines a first number of iterations.

[0228] After receiving the second characteristic information, the terminal device may determine the first repetition number based on a preconfigured association relationship. The association relationship may indicate one of the number of candidate PDCCHs corresponding to the second characteristic information and the second characteristic information. For example, the second characteristic information is aggregation level information or candidate control channel information. The terminal device selects a corresponding first repetition number from the number of candidate PDCCHs corresponding to the aggregation level information or the candidate control channel information based on the preconfigured association relationship, and the aggregation level information or the candidate control channel may be indicated to the terminal device by the network device using higher layer signaling or physical layer signaling. The higher layer signaling may be RRC signaling or a media access control element (MAC CE), and the physical layer signaling may be DCI. This is not particularly limited in the present specification.

[0229] 605: The terminal device transmits a first channel.

[0230] For step 605 in this embodiment, please refer to the relevant description of step 407 in the embodiment shown in Figure 4. The details will not be described again here.

[0231] In this embodiment, the terminal device obtains the first repetition number of the first channel by matching the second characteristic information sent by the network device with the association relationship, and does not need to blindly detect the PDCCH, which reduces the use of DCI, improves network access processing speed, and reduces DCI overhead. At the same time, network resources can be saved and communication efficiency can be improved.

[0232] 2.2. The network device sends the first information directly including the repetition number set to the terminal device.

[0233] In this embodiment, the network device directly transmits a repetition number set to the terminal device. Specifically, in the repetition number indicated by the repetition number set, the repetition number of the PDCCH may be associated with the repetition number of the PDSCH or may be associated with the repetition number of the PUSCH.

[0234] 2.2.1. There is an association relationship between the number of repetitions of the PDCCH and the number of repetitions of the PDSCH. In order to reduce network resources occupied by the indication information of the PDSCH or the PDCCH, the terminal device may determine the number of repetitions of the PDSCH based on the number of repetitions of the PDCCH, or may determine the number of repetitions of the PDCCH based on the number of repetitions of the PDSCH.

[0235] See Figure 7. Another procedure of the communication method in this embodiment includes the following steps.

[0236] 701: A terminal device sends an access request to a network device, and in response, the network device receives an access request from the terminal device.

[0237] For step 701 in this embodiment, please refer to the relevant description of step 401 in the embodiment shown in Figure 4. The details will not be described again here.

[0238] 702: The network device determines a first set of iteration numbers and a second set of iteration numbers.

[0239] This embodiment may be implemented based on the four assumptions and terminal type indication method of step 402 in the embodiment shown in Figure 4. The details will not be described again here.

[0240] In one possible implementation, the first repetition number of the first channel is associated with first characteristic information of the terminal device. For example, the first characteristic information is a device type. When the network device authorizes 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 number is 1 or a first predefined value. When the device type of the UE is terminal device type 1, the network device may determine that the first repetition number is 16. When the device type of the terminal device is terminal device type 2, the network device may determine that the first repetition number is 4. The above values ​​are merely examples and are not particularly limited in this specification. The method for determining the second repetition number of the second channel is the same as the method for determining the first repetition number, and the details will not be described again here. However, there may be a linear operational relationship between the second repetition number and the first repetition number.

[0241] After determining the first and second repetition numbers, the network device may determine a first set of repetition numbers corresponding to the first repetition numbers and a second set of repetition numbers corresponding to the second repetition numbers according to a predefined rule or table, or based on access requests received from multiple terminal devices. Optionally, the network device may determine the first set of repetition numbers or the second set of repetition numbers based on the first characteristic information.

[0242] 703: The network device sends a first set of repetition numbers and a second set of repetition numbers to the terminal device, and in response, the terminal device receives the first set of repetition numbers and the second set of repetition numbers from the network device.

[0243] After determining the first and second repetition count sets, the network device may transmit the first and second repetition count sets to the terminal device via an RRC message. When the second repetition count set has only one repetition count, the repetition count is the first parameter. When the second repetition count set includes multiple repetition counts, the terminal device may select one repetition count in the second repetition count set as the first parameter by using the first indication information transmitted by the network device.

[0244] 704: The terminal device determines a first number of iterations and a second number of iterations.

[0245] When the first set of repetition numbers indicates one maximum repetition number, the terminal device may determine the multiple repetition numbers indicated by the maximum repetition number according to a predefined rule or table, and may determine the first repetition number from the multiple repetition numbers based on the first indication information. When the first set of repetition numbers indicates multiple repetition numbers, the terminal device may directly determine the first repetition number based on the first indication information, and then obtain the second repetition number by using a linear calculation algorithm based on the first repetition number and the second set of repetition numbers. Specifically, when the second set of repetition numbers includes only one repetition number, the repetition number is the first parameter, and the second repetition number may be directly calculated based on the first repetition number. When the second set of repetition numbers includes multiple repetition numbers, the terminal device may first indicate the first parameter in the second set of repetition numbers by using one-bit data in the first indication information, and then obtain the second repetition number by linear calculation based on the first parameter and the first repetition number.

[0246] For example, when the second repetition number set includes only one repetition number, the first indication information, e.g., DCI, indicates a first PDCCH repetition number X, and the network device indicates a first PDSCH parameter Y to the terminal device through an RRC message. In this case, the second PDSCH repetition number may be determined based on X and Y, or may be determined by addition, multiplication, or other linear operation relationship. For example, if the first PDCCH repetition number indicated in the DCI is 2 and the network device indicates to the terminal device through the RRC message that the first PDSCH parameter is 4, the second PDSCH repetition number may be 2×4=8. When the second repetition number set includes multiple repetition numbers, the first repetition number of the PDCCH indicated in the DCI is 2, and the network device indicates to the terminal device via an RRC message that the second repetition number set of the PDSCH is {1, 2, 4, 8}. The terminal device may first indicate a first parameter of the second repetition number set by using the DCI and then multiply the first parameter by the first repetition number, or may first multiply the second repetition number by the first repetition number to obtain a merged set from the second repetition number set. In this case, the actual repetition number set of the PDSCH may be {1, 2, 4, 8, 16}, and the terminal device then indicates a value in the actual repetition number set by using the DCI to obtain the second repetition number. Specifically, the first channel may be a PDCCH and the second channel may be a PDSCH, or the first channel may be a PDSCH and the second channel may be a PDCCH. This is not particularly limited in this specification.

[0247] The linear operation relationship indicates a 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, or the capabilities of the terminal device supported by the network device (e.g., the number of receive antennas). For example, the PDSCH repetition number is related to the device type of the terminal device supported by the network device. For a terminal device of terminal device type 1, the PDSCH repetition number is large, and for a terminal device of terminal device type 2, the PDSCH repetition number is small. Legacy UEs correspond to a smaller repetition number. Alternatively, if the PDCCH aggregation level is large, the PDCCH decoding performance is good and the coverage is good. In this case, the PDSCH repetition number may be a smaller number. In conclusion, the linear operation algorithm can be adaptively adjusted.

[0248] 705: The network device transmits the first channel and the second channel to the terminal device, and correspondingly, the terminal device receives the first channel and the second channel from the network device.

[0249] In this embodiment, the terminal device receives a PDCCH based on the determined first number of repetitions and receives a PDSCH based on the determined second number of repetitions, or receives a PDSCH based on the determined first number of repetitions and receives a PDCCH based on the determined second number of repetitions.

[0250] In this embodiment, the network device indicates to the terminal device the number of repetitions of the first channel and the number of repetitions of the second channel by using DCI, and only the number of repetitions of one channel needs to be indicated, or less bit data is required to indicate the second number of repetitions, thus saving network resources and improving communication efficiency.

[0251] 2.2.2 The number of repetitions of the PDCCH is associated with the number of repetitions of the PUSCH.

[0252] Based on the PDCCH, the terminal device may determine the number of repetitions of the PUSCH based on a possible association relationship between the number of repetitions of the PDCCH and the number of repetitions of the PUSCH, or may determine the number of repetitions of the PDCCH based on the number of repetitions of the PUSCH, thereby reducing network resources occupied by the indication information of the PUSCH or the PDCCH.

[0253] See Figure 8. Another procedure of the communication method in this embodiment includes the following steps.

[0254] 801: A terminal device sends an access request to a network device, and in response, the network device receives an access request from the terminal device.

[0255] 802: The network device determines a first set of iteration numbers and a second set of iteration numbers.

[0256] 803: The network device sends a first set of repetition numbers and a second set of repetition numbers to the terminal device, and in response, the terminal device receives the first set of repetition numbers and the second set of repetition numbers from the network device.

[0257] For steps 801 to 803 in this embodiment, please refer to the relevant description of steps 701 to 703 in the embodiment shown in Figure 7. The details will not be described again here.

[0258] 804: The terminal device determines a first number of iterations and a second number of iterations.

[0259] For determining the first and second iteration numbers, please refer to the determination method in step 704 in the embodiment shown in Figure 7. The details will not be described again here.

[0260] For example, the first channel may be a PDCCH and the second channel may be a PUSCH, or the first channel may be a PUSCH and the second channel may be a PDCCH, which is not particularly limited in this specification.

[0261] 805: The terminal device transmits the first channel and the second channel.

[0262] In this embodiment, when the first channel is a PDCCH and the second channel is a PUSCH, the terminal device may receive the PDCCH based on the first number of repetitions and transmit the PUSCH based on the second number of repetitions.

[0263] In another example, when the first channel is a PUSCH and the second channel is a PDCCH, the terminal device may alternatively transmit the PUSCH based on the first number of repetitions and receive the PDCCH based on the second number of repetitions, which is not particularly limited in this specification.

[0264] In this embodiment, the network device indicates to the terminal device the number of repetitions of the first channel and the number of repetitions of the second channel by using DCI, and only the number of repetitions of one channel needs to be indicated, or less bit data is required to indicate the second number of repetitions, thus saving network resources and improving communication efficiency.

[0265] 2. The terminal device processes the first maximum repetition number or the first repetition number set from the network device by using an adjustment coefficient to determine the actual first repetition number for receiving the first channel, which reduces the computing resources occupied when the base station acquires the device type of the terminal device.

[0266] See Figure 9. Another procedure of the communication method in this embodiment includes the following steps:

[0267] 901: A terminal device sends an access request to a network device, and in response, the network device receives the access request from the terminal device.

[0268] For step 901 in this embodiment, please refer to the relevant description of step 401 in the embodiment shown in Figure 4. The details will not be described again here.

[0269] 902: The network device determines a first maximum number of repetitions or a first set of repetitions.

[0270] This embodiment may be implemented based on the four assumptions and terminal type indication method of step 402 in the embodiment shown in Figure 4. The details will not be described again here.

[0271] In this embodiment, when the network device determines that the terminal device is permitted to access the network, the first repetition number of the first channel is associated with the device type. The first channel may be a PDCCH or another channel, for example, a PDSCH or a PUSCH. This is not particularly limited herein. For example, 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 merely examples and are not particularly limited herein.

[0272] After determining the first number of repetitions, the network device may determine a second maximum number of repetitions or a second set of repetitions corresponding to the terminal device based on the first number of repetitions. Optionally, the network device may alternatively determine the first maximum number of repetitions or the first set of repetitions based on second characteristic information.

[0273] 903: The network device sends a first repetition number and a first set of repetition numbers to the terminal device, and in response, the terminal device receives a first maximum repetition number or a first set of repetition numbers from the network device.

[0274] The first maximum repetition number or the second set of repetition numbers may be configured by using higher layer signaling or physical layer signaling, for example, RRC signaling, or MAC CE, or physical layer signaling, for example, DCI.

[0275] 904: The terminal device determines a first number of iterations based on the adjustment factor.

[0276] After receiving the first maximum repetition number or the first set of repetition numbers, the terminal device may determine a first repetition number from the first maximum repetition number or the first set of repetition numbers based on the adjustment factor. In one example, after receiving the first maximum repetition number from the network device, the terminal device may adjust the first maximum repetition number based on the adjustment factor to obtain a second maximum repetition number that actually corresponds to the terminal device. The terminal device obtains multiple possible repetition numbers based on the second maximum repetition number according to a predefined rule or table, and then determines the first repetition number from the multiple possible repetition numbers based on first indication information from the network device. The first indication information may be physical layer signaling or higher layer signaling. The physical layer may be DCI, and the higher layer signaling may be RRC or MAC CE. The network device may pre-configure the adjustment factor for the terminal device by using higher layer signaling, or may pre-define the adjustment factor in a protocol between the network device and the terminal device, or may indicate the adjustment factor to the terminal device by using physical layer signaling, or may enable the terminal device to determine the adjustment factor by using the first characteristic information.

[0277] In another example, after receiving the first set of repetition numbers transmitted by the network device, the terminal device may adjust the first set of repetition numbers based on the adjustment factor to obtain a second set of repetition numbers that actually corresponds to the terminal device. The terminal device may determine the first repetition number from the second set of repetition numbers based on the first indication information transmitted by the network device.

[0278] For example, the first maximum repetition number or the first repetition number set for a legacy UE included in the RRC message sent by the network device is used as an example. The adjustment factor for terminal device type 1 may be configured as 4, the adjustment factor for terminal device type 2 may be configured as 2, and the adjustment factor for legacy UE is 1 or not set. The terminal device may apply the adjustment factor for each terminal type to the first maximum repetition number for the legacy UE. For example, if the first maximum repetition number is 8, the maximum repetition number for terminal device type 1 is 32, the maximum repetition number for terminal device type 2 is 16, and the maximum repetition number for legacy UE is 8. After obtaining the maximum repetition number, the terminal device may obtain the repetition number set through table walking and then indicate the first repetition number based on first indication information, such as DCI. The adjustment factor may also be applied to the first repetition number set. The repetition count set for legacy UE is {1, 2, 4, 8}, the repetition count set for terminal device type 2 is {2, 4, 8, 16}, and the repetition count set for terminal device type 1 is {4, 8, 16, 32}. In this example, the adjustment factor for terminal device type 1 or terminal device type 2 may also be 1. If the adjustment factor is not indicated or configured, the adjustment factor defaults to 1.

[0279] The adjustment factor may be configured for the terminal device by the network device using higher layer signaling or physical layer signaling, where the higher layer signaling may include an RRC message or a MAC CE. The physical layer signaling may be first indication information such as a DCI, or the adjustment factor may be predefined by the network device, or the adjustment factor may be associated with the first characteristic information. For example, the adjustment factor may be indicated using a DCI. For example, one or two bits in the DCI indicate the value of the adjustment factor in an adjustment factor set, and the adjustment factor set may be configured using RRC signaling. Alternatively, the adjustment factor may be a value in a repetition count set for a legacy UE, a value in a repetition count set for a terminal device type 1, or a value in a repetition count set for a terminal device type 2. For example, the adjustment factor may be indicated using an RRC. For example, the RRC signaling configures a value in the adjustment factor set, and the adjustment factor set may be predefined, or the RRC signaling configures a value in the repetition count set for the legacy UE as the adjustment factor. Alternatively, the RRC signaling configures a value in the repetition count set for the terminal device type 1 as the adjustment factor, or the RRC signaling configures a value in the repetition count set for the terminal device type 2 as the adjustment factor. For example, the adjustment factor is determined based on the first characteristic information. If the first characteristic information for the terminal device type 1 is different from that for the terminal device type 2, a different adjustment factor is defined. For example, the adjustment factor for a terminal device with one receive antenna is larger than the adjustment factor for a terminal device with two receive antennas, and the adjustment factor for a terminal device with strong receive capability is smaller than the adjustment factor for a terminal device with weak receive capability. That is, the repetition count for a terminal device with strong receive capability is smaller than the repetition count for a terminal device with weak receive capability.

[0280] 905: The terminal device transmits a first channel.

[0281] For step 905 in this embodiment, please refer to the relevant description of step 407 in the embodiment shown in Figure 4. The details will not be described again here.

[0282] In this embodiment of the present application, the terminal device adjusts the first maximum repetition number or the first repetition number set sent by the network device by using an adjustment coefficient, and obtains the first repetition number of the first channel corresponding to the terminal device, which improves the flexibility of the network configuration.

[0283] The following describes a communication device in one embodiment of the present application. Please refer to Fig. 10. In the embodiment of the present application, the structure of the communication device 1000 is as follows: a transceiver unit 1001 configured to receive first information from a network device, determine a first repetition number of a first channel based on a first set of repetition numbers, and transmit the first channel based on the first repetition number; and a processing unit 1002 configured to determine access status information and / or a first set of repetition numbers for the first channel based on the first information, the first set of repetition numbers including at least one repetition number, and to determine whether to access the network based on the access status information.

[0284] In this embodiment, the access status information is determined based on a bit status in the first information, the bit status indicating that the terminal device is not authorized to access the network, and the bit status relates to the first characteristic information of the terminal device.

[0285] In this embodiment, the first information includes repetition level information, and the processing unit 1002: It is particularly configured to determine a first set of repetition numbers based on the repetition level information.

[0286] In this embodiment, the transceiver unit 1001 includes: It is particularly configured to determine a first number of repetitions based on a first maximum number of repetitions and a first set of number of repetitions, and the first maximum number of repetitions is configured by using a radio resource control message.

[0287] In this embodiment, the repetition level information includes a first value, and the first value indicates that the first repetition number is 1 or indicates that the first repetition number is a first predefined value.

[0288] In this embodiment, the first information includes second feature information, the second feature information is used to determine a first set of iterations, and the second feature information relates to the first iterations.

[0289] In this embodiment, the first information is carried in a radio resource control message.

[0290] Specifically, the transceiver unit 1001 includes: The method is configured to determine a first number of repetitions based on first indication information and a first set of repetition numbers, where the first indication information is information from the network device.

[0291] In this embodiment, the transceiver unit 1001 includes: determining a second number of repetitions for a second channel based on the first number of repetitions and a first parameter, the first parameter being a parameter from the network device; the first channel is a physical downlink control channel and the second channel is a physical downlink shared channel; or the first channel is a physical downlink shared channel and the second channel is a physical downlink control channel; or the first channel is a physical downlink control channel and the second channel is a physical uplink shared channel; or The first channel is further configured to be a physical uplink shared channel and the second channel is a physical downlink control channel.

[0292] In this embodiment, the transceiver unit 1001 includes: The method is further configured to perform a linear operation on the first number of iterations and the first parameter to obtain a second number of iterations.

[0293] In this embodiment, the communication device may perform the operations performed by the terminal device in the embodiments shown in Figures 4 to 8. The details will not be described again here.

[0294] The following describes a communication device in an embodiment of the present application. Please refer to Fig. 11. In the embodiment of the present application, other structures of the communication device 1100 include: A processing unit 1101 configured to determine first characteristic information of a terminal device; and a transceiver unit 1102 configured to transmit first information to a terminal device based on first characteristic information and transmit a first channel based on a first repetition number, the first information indicating access status information and / or a first repetition number set for the first channel, the first repetition number set including at least one repetition number, and the first repetition number being determined based on the first characteristic information.

[0295] In this embodiment, the access status information is determined based on a bit status in the first information, the bit status indicating that the terminal device is not authorized to access the network, and the bit status relates to the first characteristic information of the terminal device.

[0296] In this embodiment, the first information includes repetition level information and a first maximum repetition number, the repetition level information indicates a first repetition number set, and the first maximum repetition number is determined based on the first feature information.

[0297] In this embodiment, the repetition level information includes a first value, and the first value indicates that the first repetition number is 1 or indicates that the first repetition number is a first predefined value.

[0298] In this embodiment, the first information includes second feature information, the second feature information is used to determine a first set of iterations, and the second feature information relates to the first iterations.

[0299] In this embodiment, the transceiver unit 1102 includes: The method is further configured to determine first indication information based on the first characteristic information, and the first indication information is used to determine a first number of repetitions.

[0300] In this embodiment, the first information further includes a first parameter, and the first parameter is used to determine a second number of repetitions of the second channel; the first channel is a physical downlink control channel and the second channel is a physical downlink shared channel; or the first channel is a physical downlink shared channel and the second channel is a physical downlink control channel; or the first channel is a physical downlink control channel and the second channel is a physical uplink shared channel; or The first channel is a physical uplink shared channel and the second channel is a physical downlink control channel.

[0301] In this embodiment, the communication device may perform the operations performed by the network device in the embodiments shown in Figures 4 to 8. The details will not be described again here.

[0302] See Figure 12. In one embodiment of the present application, communication equipmentOther structures of the 1200 include: a transceiver unit 1201 configured to receive a first maximum number of repetitions or a first set of repetitions from a network device, the first set of repetitions including at least one number of repetitions, and to transmit a first channel based on the first number of repetitions; and a processing unit 1202 configured to determine a first number of repetitions for the first channel based on the first maximum number of repetitions or the first set of number of repetitions and an adjustment factor.

[0303] In this embodiment, the processing unit 1202: determining a second maximum number of iterations based on the first maximum number of iterations and the adjustment factor; It is particularly configured to determine the first number of repetitions based on the second maximum number of repetitions and the first indication information, where the first indication information is information from the network device.

[0304] In this embodiment, the processing unit 1202: determining a second set of iterations based on the first set of iterations and the adjustment factor; The device is particularly configured to determine the first number of repetitions based on the second set of repetitions and the first indication information, where the first indication information is information from the network device.

[0305] In this embodiment, the adjustment factors are pre-configured by the network device by using higher layer signaling, or The adjustment factor may be predefined by the network device, or The adjustment factor is indicated by the network device by using physical layer signaling, or The adjustment coefficient is related to the first feature information.

[0306] In this embodiment, the communication device may perform the operations performed by the terminal device in the embodiment shown in Figure 9. The details will not be described again here.

[0307] See Figure 13. In one embodiment of the present application, another structure of the communication device 1300 is: a processing unit 1301 configured to determine a device type of a terminal device; The wireless communication device includes a transmitting unit 1302 configured to transmit a first maximum number of repetitions or a first set of number of repetitions to a terminal device based on a device type, and transmit a first channel based on the first number of repetitions, the first number of repetitions being determined based on first characteristic information, and the first maximum number of repetitions or the first set of number of repetitions being determined based on the first number of repetitions and an adjustment coefficient.

[0308] In this embodiment, the sending unit 1302 includes: Pre-configuring the adjustment factors by using higher layer signaling, or Predefine the adjustment factor, or Indicating the adjustment factor by using physical layer signaling, or The method is further configured to determine an adjustment coefficient based on the first characteristic information.

[0309] In this embodiment, the communication device may perform the operations performed by the network device in the embodiment shown in Figure 9. The details will not be described again here.

[0310] Corresponding to the method embodiment and virtual device embodiment provided in the present application, an embodiment of the present application further provides a communication device. The hardware structure of the communication device will be described below.

[0311] FIG. 14 is a diagram illustrating a communication device according to an embodiment of the present application. 14004 to 9, and is configured to implement the method corresponding to the terminal device in the aforementioned method embodiment. Alternatively, the communication device may be the network device in FIG. 4 to 9, and is configured to implement the method corresponding to the network device in the aforementioned method embodiment. . machine For the function, reference may be made to the description in the above method embodiment.

[0312] The communication device 1400 includes one or more processors 1401. The processors 1401 may also be referred to as processing units. , regulation The processor 1401 may implement control functions. The processor 1401 may be a general-purpose processor, a special-purpose processor, or the like. For example, the processor 1401 includes a baseband processor, a central processing unit, an application processor, a modem processor, a graphics processing unit, an image signal processor, a digital signal processor, a video codec processor, a controller, a memory, and / or a neural network processing unit. The baseband processor may be configured to primarily process communication protocols and communication data. The central processing unit may be configured to control the communication device 1400, execute software programs, and / or process data. The different processors may be separate components or may be integrated into one or more processors, for example, integrated into one or more application-specific integrated circuits.

[0313] Optionally, the communication apparatus 1400 includes one or more memories 1402 configured to store instructions 1404, which are executed on the processor to cause the terminal device 1400 to perform the methods described in the above method embodiments. Optionally, the memory 1402 may further store data. The processor and memory may be separately disposed or integrated.

[0314] Optionally, a communication device1400 includes instructions 1403 (which may also be referred to as code or programs), which may be executed on the processor to cause the communication device 1400 to perform the methods described in the above embodiments. Optionally, the processor 1401 may store data.

[0315] Optionally, the communications device 1400 may further comprise a transceiver 1405 and an antenna 1406. The transceiver 1405, which may also be referred to as a transceiver unit, transceiver, transceiver circuit, transceiver, input / output interface, or the like, is configured to implement transceiver functionality of the communications device 1400 via the antenna 1406.

[0316] Optionally, the communications device 1400 may further include one or more components, such as a wireless communications 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. It may be understood that in some embodiments, the UE 1400 may include more or fewer components, or some components may be integrated, or some components may be separated. These components may be hardware, software, or a combination of software and hardware.

[0317] The processor 1401 and transceiver 1405 described in this application may be implemented as an integrated circuit (IC), an analog IC, a radio frequency integrated circuit (RFIC), a hybrid signal IC, an application-specific integrated circuit (ASIC), a printed circuit board (PCB), an electronic device, or the like. A communication device implementing the communication device described herein may be an independent device (e.g., an independent integrated circuit, a mobile phone) or may be part of a larger device (e.g., a module that can be incorporated into other devices). For details, please refer to the above description of the terminal device and the network device. The details will not be described again here.

[0318] 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 may be equivalent to the processor 1401 in the communication device 1400.

[0319] 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 may be equivalent to the processor 1401 in the communication device 1400.

[0320] 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 may be equivalent to the processor 1401 in the communication device 1400.

[0321] 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 may be equivalent to the processor 1401 in the communication device 1400.

[0322] One embodiment of the present application provides a communication device. The communication device may be used in the aforementioned embodiments. The communication device includes corresponding means, units, and / or circuits used to implement a terminal device in the embodiments shown in Figures 4 to 9. For example, the terminal device includes a transceiver module configured to support the terminal device in implementing transceiver functions and a processing module configured to support the terminal device in processing signals.

[0323] FIG. 15 is a diagram illustrating a communication device according to an embodiment of the present application. 1500 FIG. 1 is a schematic diagram of the structure of

[0324] The communication device 1500 is applicable to the method embodiments shown in FIGS. 4 to 9. For ease of explanation, FIG. 15 shows only the main components of the communication device 1500. As shown in FIG. 15, the communication device 1500 includes a processor, a memory, a control circuit, an antenna, and an input / output device. The processor is primarily configured to process communication protocols and communication data, control the communication device 1500, execute software programs, and process data of the software programs. The memory is primarily configured to store software programs and data. The control circuit is primarily configured to convert baseband signals and high-frequency signals and process high-frequency signals. The antenna is primarily configured to receive and transmit radio-frequency signals in the form of electromagnetic waves. The input / output device, such as a touchscreen, a display, a microphone, or a keyboard, is primarily configured to receive data input by a user and output data to the user.

[0325] A mobile phone is used as an example of the communication device 1500. After the communication device 1500 is powered on, the processor can read a software program in a storage unit, interpret and execute instructions of the software program, and process data of the software program. When data needs to be transmitted through an antenna, the processor performs baseband processing on the data to be transmitted and then outputs the baseband signal to a control circuit. After performing radio frequency processing on the baseband signal, the control circuit transmits the radio frequency signal in the form of electromagnetic waves through the antenna. When data is transmitted 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.

[0326] Those skilled in the art will appreciate that for simplicity of explanation, FIG. 15 shows only one memory and one processor. In some embodiments, communication device 1500 may include multiple processors and memories. Memory may also be referred to as a storage medium, storage device, or the like. This is not limited to this embodiment of the invention.

[0327] In an optional implementation, the processor may include a baseband processor and a central processing unit. The baseband processor is primarily configured to process communication protocols and communication data, and the central processing unit is primarily configured to control the entire communication device 1500, execute software programs, and process data for the software programs. The functions of the baseband processor and the central processing unit are integrated into the processor in FIG. 15. Those skilled in the art will appreciate that the baseband processor and the central processing unit may be independent processors interconnected using technology such as a bus. The communication device 1500 may include multiple baseband processors to accommodate different network standards. The communication device 1500 may include multiple central processing units to increase the processing power of the communication device 1500. The components of the communication device 1500 may be connected through various buses. The baseband processor may also be referred to as a baseband processing circuit or a baseband processing chip. The central processing unit may alternatively be referred to as a central processing circuit or a central processing chip. The functions for processing communication protocols and communication data may be embedded in 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 functions.

[0328] In one example, an antenna and control circuitry having transceiver functionality may be considered as a transceiver unit 1510 of the communications device 1500, and a processor having processing functionality may be considered as a processing unit 1520 of the communications device 1500. As shown in FIG. 15, the communications device 1500 comprises a transceiver unit 1510 and a processing unit 1520. The transceiver unit may also be referred to as a transceiver machine, a transceiver, a transceiver device, or the like. Optionally, a component configured to implement a receiving functionality in the transceiver unit 1510 may be considered as a receiving unit, and a component configured to implement a transmitting functionality in the transceiver unit 1510 may be considered as a transmitting unit. In other words, the transceiver unit 1510 includes a receiving unit and a transmitting unit. For example, the receiving unit may also be referred to as a receiver, a receiving machine, or a receiving circuit, and the transmitting unit may also be referred to as a transmitter, a transmitting machine, or a transmitting circuit.

[0329] 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 may be equivalent to the processing unit 1520 in the communication device 1500.

[0330] 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 may be equivalent to the processing unit 1520 in the communication device 1500.

[0331] The communication device 1500 in this embodiment of the present application may correspond to the terminal device in the aforementioned method embodiment. The transceiver unit 1510, the processing unit 1520, and the like in the communication device 1500 may implement the functions and / or various steps and methods implemented by the terminal device in the aforementioned method embodiment. For the sake of brevity, the details will not be described again here.

[0332] An embodiment of the present application further provides a communication device. The communication device may be used in the aforementioned embodiments. The communication device includes means, units, and / or circuits used to implement the functions of the network device in the embodiments shown in Figures 4 to 9. For example, the communication device includes a transceiver unit configured to support the network device in implementing transceiver functions and a processing unit configured to support the network device in processing signals. It may be understood that the first network device and the second network device are relevant to one or several UEs, and that the functions of the first network device and the second network device may be interchangeable with respect to several other UEs.

[0333] FIG. 16 is a diagram illustrating a communication device according to an embodiment of the present application. 1600 16 is a schematic diagram of the structure of a communication device 1600. As shown in FIG. 16, the communication device 1600 is applicable to the functions of the network device in the method embodiments shown in FIGS. 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 information transmitted by a terminal device through the antenna 1603 and transmits the information transmitted by the terminal device to the baseband device 1601 for processing. In the downlink direction, the baseband device 1601 processes information related to the terminal device and transmits it to the radio frequency device 1602. The radio frequency device 1602 processes the information related to the terminal device and then transmits the processed information to the antenna 1603. 1603 and send it to the terminal device via

[0334] The baseband device 1601 includes one or more processing units 16011, a storage unit 16012, and an interface 16013. The processing unit 16011 is configured to support the communication device in performing the functions of the network device in the aforementioned method embodiments. The storage unit 16012 is configured to store software programs and / or data. The interface 16013 is configured to exchange information with the radio frequency device 1602. The interface includes an interface circuit configured to input and output information. In one implementation, the processing unit is an integrated circuit, such as one or more ASICs, one or more DSPs, one or more FPGAs, or a combination of these types of integrated circuits. These integrated circuits may be integrated together to form a chip. The storage unit 16012 and the processing unit 16011 may be located on the same chip, i.e., in an on-chip storage element. Alternatively, the storage unit 16012 and the processing unit 16011 may be located on a different chip from the processing element 16011, i.e., in an off-chip storage element. The storage unit 16012 may be a single memory or may be a collective name for multiple memories or storage elements.

[0335] The communication device may implement some or all of the steps in the above-described method embodiments in the form of a scheduling program by one or more processing units. For example, the corresponding functions of the network devices in Figures 4 to 9 are implemented. The one or more processing units may support radio access technologies of the same standard or different standards.

[0336] The transceiver unit 1102 in the communication device 1100 is equivalent to the transceiver 16013 in the communication device 1600. The processing unit 1101 in the communication device 1100 may be equivalent to the processing unit 16011 in the communication device 1600.

[0337] The transmitting unit 1302 in the communication device 1300 is equivalent to the interface 16013 in the communication device 1600. The processing unit 1301 in the communication device 1300 may be equivalent to the processing unit 16011 in the communication device 1600.

[0338] The communication device 1600 in this embodiment of the present application may correspond to the network device in the aforementioned method embodiment. The interface 16013, the processing unit 16011, and the like in the communication device 1600 may implement the functions and / or various steps and methods implemented by the network device in the aforementioned method embodiment. For the sake of brevity, the details will not be described again here.

[0339] Those skilled in the art may realize that, in combination with the examples described in the embodiments disclosed herein, the units and methods can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed by hardware or software depends on the specific application and the design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but the implementation form should not be considered to go beyond the scope of this application.

[0340] In some embodiments provided in the present application, it should be understood that the disclosed systems, devices, and methods can be implemented in other manners. For example, the described device embodiments are merely examples. For example, the unit division is merely a logical functional division, and units described as separate components may or may not be physically separate, and components displayed as units may or may not be physical units. That is, they may be located in one place or distributed over multiple network units. Some or all of the units may be selected based on what is actually needed to achieve the objectives of the solution of the embodiment.

[0341] When the functions are implemented in the form of a software functional unit and sold or used as an independent product, the functions may be stored in a computer-readable storage medium. Based on such understanding, the technical solutions of the present application may be implemented in the form of a software product. The computer software product is stored in a storage medium and includes a plurality of instructions for instructing a computer device (which may be a personal computer, a server, or a network device) to perform all or some of the steps of the methods described in the embodiments. The aforementioned computer-readable storage medium may be any available medium that can be accessed by a computer. For example, but not limited to, computer-readable media may include random access memory (RAM), read-only memory (ROM), and 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, removable hard disk, or other optical disk storage, disk storage media, or other magnetic storage devices, or any other medium used to carry or store desired program code in the form of instructions or data structures and used by a computer accessing.Additionally, by way of example, but not limitation, many forms of RAM may be used, such as static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synchlink DRAM, SLDRAM), or Direct Rambus dynamic random access memory (direct rambus RAM, DR RAM).

[0342] The foregoing description is a mere description of the present application. Fruit The present invention is merely an embodiment of the present invention and is not intended to limit the scope of protection of the embodiments of the present application. Any modifications or alternative forms that can be easily conceived by a person skilled in the art within the scope of the technology disclosed in the embodiments of the present application shall fall within the scope of protection of the embodiments of the present application. Therefore, the scope of protection of the embodiments of the present application shall be subject to the scope of protection of the claims. [Explanation of symbols]

[0343] 1000 Communication Equipment 1001 Transceiver Unit 1002 Processing Unit 1100 Communication equipment 1101 Processing Unit 1102 Transceiver Unit 1200 Terminal Devices 1201 Transceiver Unit 1202 Processing Unit 1300 Communication Equipment 1301 Processing Unit 1302 transmitting unit 1400 Communication Equipment 1401 processor 1402 memory 1403 Command 1404 Instructions 1405 Transceiver 1406 Antenna 1500 Communication Equipment 1510 Transceiver Unit 1520 Processing Unit 1600 Communication Equipment 1601 Baseband equipment 1602 Radio Frequency Devices 1603 Antenna 16011 Processing Unit 16012 storage unit 16013 Interface

Claims

1. A step of receiving a first message, the first message being used to indicate an indication manner of a device type of a terminal device, the indication manner of the device type of the terminal device including indicating the device type of the terminal device via a message 3 (Msg3) or indicating the device type of the terminal device via a message 1 (Msg1); indicating the device type of the terminal device using the indication scheme, the device type of the terminal device comprising a reduced capability user equipment (REDCAP UE); A communication method including:

2. The device type of the terminal device is indicated by a correspondence relationship between a transmission resource and a device type; or The communication method of claim 1 , wherein the device type of the terminal device is indicated by a bit or a field.

3. The communication method according to claim 2, wherein the transmission resource is a time domain resource and / or a frequency domain resource and / or a code domain resource of a random access preamble.

4. A communication method described in any one of claims 1 to 3, further comprising a step of determining the indication method of the device type of the terminal device based on the first message from a network device.

5. 5. The communication method according to claim 1, wherein the first message is a system information block.

6. A communication method as described in any one of claims 1 to 5, wherein when the indication scheme includes indicating the device type of the terminal device via Msg1, the indication scheme further includes indicating the device type of the terminal device via Msg3.

7. A step of transmitting a first message, the first message being used to indicate an indication manner of a device type of a terminal device, the indication manner of the device type of the terminal device including indicating the device type of the terminal device via a message 3 (Msg3) or indicating the device type of the terminal device via a message 1 (Msg1); determining the device type of the terminal device based on the indication scheme, the device type of the terminal device comprising a reduced capability user equipment (REDCAP UE).

8. The device type of the terminal device is indicated by a correspondence relationship between a transmission resource and a device type; or The communication method of claim 7, wherein the device type of the terminal device is indicated by a bit or a field.

9. The communication method according to claim 8, wherein the transmission resources are time domain resources and / or frequency domain resources and / or code domain resources of a random access preamble.

10. The communication method according to claim 7, further comprising the step of: transmitting a second message, the second message being used to determine an indication scheme of a second device type of a second terminal device, the second device type of the second terminal device being different from the reduced capability user equipment (REDCAP UE).

11. 11. The communication method according to claim 7, wherein the first message is a system information block.

12. A communication method described in any one of claims 7 to 11, wherein when the indication scheme includes indicating the device type of the terminal device via Msg1, the indication scheme further includes indicating the device type of the terminal device via Msg3.

13. At least one processor; and one or more memories coupled to the at least one processor that store programming instructions for execution by the at least one processor, The programming instructions are configured to: receiving a first message, the first message being used to indicate an indication manner of a device type of a terminal device, the indication manner of the device type of the terminal device including indicating the device type of the terminal device via a message 3 (Msg3) or indicating the device type of the terminal device via a message 1 (Msg1); Using the indication scheme to indicate the device type of the terminal device, the device type of the terminal device including a reduced capability user equipment (REDCAP UE); A communication device that performs the above.

14. The device type of the terminal device is indicated by a correspondence between a transmission resource and a device type; or The communication apparatus of claim 13 , wherein the device type of the terminal device is indicated by a bit or a field.

15. The communication device of claim 14, wherein the transmission resource is a time domain resource and / or a frequency domain resource and / or a code domain resource of a random access preamble.

16. The programming instructions, when executed by the at least one processor, further cause the communications device to: The communication device according to any one of claims 13 to 15, further configured to determine the indication scheme of the device type of the terminal device based on the first message from a network device.

17. 17. The communication device of claim 13, wherein the first message is a system information block.

18. A communication device as described in any one of claims 13 to 17, wherein when the indication scheme includes indicating the device type of the terminal device via Msg1, the indication scheme further includes indicating the device type of the terminal device via Msg3.

19. At least one processor; and one or more memories coupled to the at least one processor that store programming instructions for execution by the at least one processor, The programming instructions are configured to: Sending a first message, the first message being used to indicate an indication manner of a device type of a terminal device; determining the device type of the terminal device based on the indication scheme, the device type of the terminal device comprising a reduced capability user equipment (REDCAP UE); A communication device that performs the above.

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

21. The communication device of claim 20, wherein the transmission resources are time domain and / or frequency domain and / or code domain resources of a random access preamble.

22. The programming instructions, when executed by the at least one processor, further cause the communications device to:

22. The communication device according to claim 19, further comprising: a step of transmitting a second message, the second message being used to determine an indication scheme of a second device type of a second terminal device, the second device type of the second terminal device being different from the reduced capability user equipment (REDCAP UE).

23. 23. The communication device of claim 19, wherein the first message is a system information block.

24. A communication device as described in any one of claims 19 to 23, wherein when the indication scheme includes indicating the device type of the terminal device via Msg1, the indication scheme further includes indicating the device type of the terminal device via Msg3.

25. A computer readable storage medium storing a computer program, the computer program being enabled, when executed on a computer, to perform the method according to any one of claims 1 to 6.

26. A computer-readable storage medium storing a computer program, which, when executed on a computer, enables the computer to perform the method according to any one of claims 7 to 12.

27. A computer program which, when executed on a computer, causes the computer to perform the method according to any one of claims 1 to 6.

28. A computer program which, when executed on a computer, causes the computer to perform a method according to any one of claims 7 to 12.

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