Communication methods and devices

Abstract

To provide a communication method and device for improving flexibility of a network configuration, reducing complexity of blind detection of a terminal device, saving network resources, and improving communication efficiency.SOLUTION: A method is applied to a coverage enhancement scenario and includes the followings. The method includes that: a network device may indicate, to a terminal device, whether or not the terminal device is allowed to access a network, and / or indicate a transmission repetition count or a coverage level of a PDCCH of the terminal device; and the terminal device may determine blind detection based on indication from the network device.SELECTED DRAWING: Figure 4

Description

Technical Field

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

Background Art

[0002] In the random access procedure of a new radio (NR) communication system, the 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 receiving antennas of the user equipment is small, the 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 enhance the effect of receiving the PDCCH by the user equipment and achieve the effect of coverage expansion. The user equipment constitutes the maximum number of repetitions of the control channel for obtaining radio resource control (RRC) signaling on the PDSCH and scheduling the RAR through blind detection, and determines the number of repetitions based on downlink control information (DCI) to achieve the effect of coverage expansion. Kikuri to achieve the effect of coverage expansion.

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

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

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

[0007] In the random access procedure of NR communication, a terminal device sends 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, based on the first information, the access status information of the terminal device or the first set of repetitions for the first channel, or it may determine both the access status information and the first set of repetitions. The first set of repetitions has one or more repetition counts, and the first set of repetitions may be the first set of repetitions to receive or the first set of repetitions to transmit.

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

[0010] Based on the first information, the terminal device determines the first number of repetitions corresponding to the first channel based on a predetermined set of repetition counts determined by a predefined decision-making method, and may receive or transmit the first channel based on the first number of repetitions.

[0011] In embodiments of this application, the terminal device may determine whether it can access the network based on access status information transmitted by the network device, thereby avoiding the waste of network resources by the terminal device still monitoring the first channel even when network access is not supported, thereby saving network resources and improving communication efficiency, or it may determine a first number of repetitions to transmit the first channel based on a received set of repetitions, thereby reducing the complexity of blind detection by the terminal device.

[0012] Referring to the first aspect, in the first implementation of the first aspect of the embodiments of this application, access status information is determined based on a bit status in the first information, the bit status indicates that the terminal device is not permitted to access the network, and the bit status relates to the first characteristic information of the terminal device.

[0013] The first characteristic information of a terminal device includes bandwidth (channel bandwidth), the number of supported or configured resource units (resource units may be resource blocks (RB), resource elements (RE), subcarriers, RB groups, resource element groups (REG), bundles, control channel elements, subframes, radio frames, slots, minislots, symbols), the number of radio frequency channels, the number of hybrid automatic repeat request (HARQ) processes, supported peak rates, application scenarios, latency requirements, processing power, protocol version, duplex scheme (half-duplex, full-duplex), and services (video surveillance and mobile broadband (mobile) The IoT application includes at least one of the following: broadband (MBB) and other IoT applications; aggregation level information; candidate control channel information; terminal device type; number of transmission antennas of the terminal device; number of receiving antennas of the terminal device; resource; resource index; level; level index; extended level; extended level index; repeat level; repeat level index; repeat count; repeat count index; coverage extended value; coverage extended range index; path loss value; path loss range index; reference signal received power value; reference signal received power range index; reference signal received quality value; reference signal received quality range index; channel quality information value; channel quality information range index; service type; service type index; power saving requirement; power saving requirement index; delay requirement; delay requirement index; pre-specified number of times to detect the first channel; index of pre-specified number of times to detect the first channel; mobility requirement; and mobility requirement index.

[0014] Referring to the first aspect, in the second implementation of the first aspect of the embodiment of the present application, the first information includes repetition level information, which may indicate a set of repetition counts for the first channel.

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

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

[0017] Referring to the first aspect, in the fifth implementation of the first aspect of the embodiment of this application, 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 is related to the first iteration.

[0018] Referring to the first aspect, in the sixth implementation of the first aspect of the embodiment of this application, when the first set of repetition counts represents one maximum number of repetitions, the terminal device may determine a plurality of repetition counts indicated by the maximum number of repetitions through table-walking, determining the first number of repetitions from the plurality of repetition counts based on first indication information transmitted by the network device. When the first set of repetition counts represents a plurality of repetition counts, the terminal device may directly determine the first number of repetitions based on first indication information transmitted by the network device.

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

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

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

[0022] In embodiments of this application, the terminal device may determine the second number of repetitions based on the first number of repetitions, thereby reducing the number of bits used to indicate the second number of repetitions in the DCI transmitted by the network device and reducing DCI overhead.

[0023] Referring to the sixth or seventh implementation of the first embodiment, in the eighth implementation of the first embodiment of the present application, after determining a first number of iterations and receiving a first parameter, the terminal device may obtain a second number of iterations by performing a linear operation, such as multiplication, on the first number of iterations and the first parameter.

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

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

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

[0027] After obtaining the first characteristic information, the network device determines whether the terminal device corresponding to the first characteristic information is permitted to access, and may indicate the terminal device based on the access status information. When the terminal device corresponding to the first characteristic information is permitted to access the network device, the network device determines the first number of repetitions for transmitting the first channel based on the first characteristic information, determines the first set of repetitions of the first channel, and then may send the first set of repetitions to the terminal device. The network device transmits the first channel to the terminal device based on the first number of repetitions.

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

[0029] Referring to the second aspect, in the first implementation of the second aspect of the embodiments of this application, access status information is determined based on a bit status in the first information, the bit status indicates that the terminal device is not permitted to access the network, and the bit status relates to the first characteristic information of the terminal device.

[0030] Referring to the second aspect, in the second implementation 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 first feature information.

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

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

[0033]

number

[0034] This is the case, and this is as specified herein. Limited It will never be determined.

[0035] Referring to the second aspect, in the fourth implementation 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 iterations, and the second feature information is related to the first iteration.

[0036] Referring to the second aspect, in a fifth implementation of the second aspect of the embodiments of this application, when a terminal device corresponding to the first feature information is permitted to access it, the network device may determine a first set of repetition counts for a first channel based on the first feature information, and then further determine first indication information indicating a first repetition count within the first set of repetition counts, and transmit the first indication information to the terminal device.

[0037] In this embodiment of the present application, the network device is configured such that the accuracy of determining the first number of repetitions by the terminal device based on the first feature information can be improved.

[0038] Referring to the fifth implementation of the second embodiment, in the sixth implementation of the second embodiment of the present application, the first information further includes a first parameter, the first parameter being used to determine the second number of repetitions of the second channel with reference 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 sharing channel, or the first channel is a physical downlink sharing channel and the second channel is a physical downlink control channel.

[0040] Alternatively, the first channel may be a physical downlink control channel and the second channel may be a physical uplink sharing channel, or the first channel may be a physical uplink sharing channel and the second channel may be a physical downlink control channel.

[0041] According to a third aspect, one embodiment of the present application provides a communication method which includes the following:

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

[0043] The terminal device receives a first maximum number of repetitions or a first set of repetitions, and may determine a first number of repetitions from the first maximum number of repetitions or the first set of repetitions based on an adjustment coefficient.

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

[0045] In this embodiment of the present application, the terminal device adjusts a first maximum number of repetitions or a first set of repetitions transmitted by the network device by using an adjustment coefficient to determine a first number of repetitions for a first channel corresponding to the terminal device, which improves the flexibility of the network configuration.

[0046] Referring to the third aspect, in the first implementation of the third aspect of the embodiments of this application, the terminal device may receive a first maximum number of repetitions transmitted by the network device, adjust the first maximum number of repetitions based on an adjustment coefficient to obtain a second maximum number of repetitions that actually corresponds to the terminal device. The terminal device performs a table walk on the second maximum number of repetitions to obtain a number of repetitions, and then determines the first number of repetitions based on the indication of the first indication information transmitted by the network device. The first indication information may be physical layer signaling, for example, DCI, or higher layer signaling, such as Radio Resource Control Signaling (RRC).

[0047] Referring to the third aspect, in the second implementation of the third aspect of the embodiments of this application, the terminal device may receive a first set of repetition counts transmitted by the network device, adjust the first set of repetition counts based on an adjustment coefficient, and obtain a second set of repetition counts that actually corresponds to the terminal device. The terminal device may determine the first number of repetitions based on the indication of the first indication information transmitted by the network device.

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

[0049] Referring to the third embodiment, or the first to second implementation of the third embodiment, in the third implementation of the third embodiment of the present application, the adjustment coefficient may be preconfigured by the network device using upper-layer signaling, or may be indicated by physical layer information, or may be a predefined protocol setting by the network device, or may be predefined by the network device based on first characteristic information and transmitted to the terminal device.

[0050] According to a fourth aspect, one embodiment of the present application provides a communication method which includes the following:

[0051] In the random access procedure of 5G NR communication, a terminal device sends a network access request to a network device. The network device may obtain a first characteristic information of the terminal device based on the terminal device's network access request or the resources of the network access request, or it may obtain the first characteristic information of the terminal device by other means, for example, through a network query.

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

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

[0054] A network device may determine a second maximum number of repetitions or a second set of repetitions corresponding to a terminal device based on a determined first number of repetitions, and then adjust the second maximum number of repetitions or the second set of repetitions based on a pre-configured adjustment coefficient to obtain a corresponding first maximum number of repetitions or 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 first set of repetitions, and may repeatedly transmit a 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 sets of repetitions transmitted to terminal devices by using an adjustment coefficient to adapt to multiple terminal devices and improve the flexibility of the network configuration.

[0056] Referring to the fourth aspect, in the first implementation of the fourth aspect of the embodiments of this application, the network device may pre-configure an adjustment coefficient for a terminal device by using upper-layer signaling, or indicate an adjustment coefficient for a terminal device by using physical layer information, or set an adjustment coefficient by pre-defining a protocol, or define an adjustment coefficient based on first characteristic information when a first maximum number of repetitions or a first set of repetitions has been transmitted.

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

[0058] A terminal device indicates its device type to a network device via messages 1 (Msg1), 3 (Msg3), A (MsgA), 5 (Msg5), or PUSCH, which carry terminal device capability information using a random access procedure. Alternatively, a terminal device may indicate its device type to a network device by using a correspondence between transmission resources and device types, or is The device type of a terminal device can be indicated to a network device by using a set or field.

[0059] In this embodiment of the present application, a terminal device indicates its device type to a network device by using a correspondence between a transmission resource and a 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, one embodiment of the present application provides an indication method which includes the following:

[0061] The network device indicates the device type of a 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 that schedules a PDSCH carrying an SIB1. The system information block may be an 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 that it reports first characteristic information for identifying the type of the terminal device. For details of the first characteristic information, see the relevant description of the first characteristic information in the implementation of the first embodiment.

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

[0063] According to a seventh aspect, one embodiment of the present application provides a communication device, which is, A transceiver unit configured to receive first information from a network device, determine the first number of repetitions of a first channel based on a first set of repetition counts, and transmit the first channel based on the first number of repetitions, The system includes a processing unit configured to determine access status information and / or a first set of repetition counts for a first channel based on first information, wherein the first set of repetition counts includes at least one repetition count, and to determine whether to access the network based on the access status information.

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

[0065] According to the eighth aspect, one embodiment of the present application provides a communication device, which is, A processing unit configured to determine the first characteristic information of a terminal device, The transceiver unit is configured to transmit first information to a terminal device based on first characteristic information, and to transmit a first channel based on a first number of repetitions, wherein the first information indicates access status information and / or a first set of repetitions for the first channel, the first set of repetitions includes at least one repetition count, and the first number of repetitions is determined based on first characteristic information.

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

[0067] According to the ninth aspect, one embodiment of the present application provides a communication device, which is, A transceiver unit configured to receive a first maximum number of repetitions or a first set of repetitions, the first set of repetitions comprising at least one repetition count, and to transmit a first channel based on the first number of repetitions. The system includes a processing unit configured to determine a first number of iterations for a first channel based on a first maximum number of iterations or a first set of iterations and an adjustment coefficient.

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

[0069] According to a tenth aspect, one embodiment of the present application provides a communication device, which is, A processing unit configured to determine the first characteristic information of a terminal device, The system includes a transmitting unit which transmits a first maximum number of repetitions or a first set of repetitions to a terminal device based on first characteristic information, transmits a first channel based on the first number of repetitions, and is configured such that the first number of repetitions is determined based on the first characteristic information, and the first maximum number of repetitions or the first set of repetitions is determined based on the first number of repetitions and an adjustment coefficient.

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

[0071] According to the eleventh aspect, one embodiment of the present application provides a communication device. The communication 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 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). 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 other examples, the communication device comprises a processor coupled to memory and configured to execute instructions in memory to implement the methods performed by the terminal device in the fifth aspect. Optionally, the communication device further comprises other components, such as an antenna, input / output modules, and interfaces. These components may be hardware, software, or a combination of software and hardware.

[0072] According to a twelfth aspect, one embodiment of the present application provides a communication device. The communication device may be a network device according to a sixth aspect, for example, a base station, or a baseband device within a 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 a terminal device using a transceiver unit and to receive device type indication information from the terminal device using a transceiver module.

[0074] In an optional implementation, the communication device comprises a processing unit, which is coupled to a storage unit and configured to execute programs or instructions in the storage unit, enabling the communication device to perform the functions of a first network device and / or a second network device.

[0075] According to the 13th aspect, one embodiment of the present application provides a communication device. The communication device includes at least one processor, a storage system, an input / output (I / O) interface, and computer-executable instructions stored in the storage system that can be executed on the processor. When a computer-executable instruction is executed by the processor, the processor performs a method according to either the first aspect or an implementation of the first aspect, or either the third aspect or an implementation of the third aspect.

[0076] According to the 14th aspect, one embodiment of the present application provides a communication device. The communication device includes at least one processor, a storage system, an input / output (I / O) interface, and computer-executable instructions stored in the storage system that can be executed on the processor. When a computer-executable instruction is executed by the processor, the processor performs a method according to either the second aspect or an implementation of the second aspect, or either the fourth aspect or an implementation of the fourth aspect.

[0077] According to the fifteenth aspect, one embodiment of the present application provides a computer-readable storage medium for storing a computer program. When the computer program is executed on a computer, the computer is enabled to perform the method in either the first aspect or an implementation of the first aspect.

[0078] According to the sixteenth aspect, one embodiment of the present application provides a computer-readable storage medium for storing a computer program. When the computer program is executed on a computer, the computer is enabled to perform the method in either the second aspect or an implementation of the second aspect.

[0079] According to the seventeenth aspect, one embodiment of the present application provides a computer-readable storage medium for storing a computer program. When the computer program is executed on a computer, the computer is enabled to perform the method in any one of the third aspect or an implementation of the third aspect.

[0080] According to the 18th aspect, one embodiment of the present application provides a computer-readable storage medium for storing a computer program. When the computer program is executed on a computer, the computer is enabled to perform the method in either the fourth aspect or one of the implementations of the fourth aspect.

[0081] According to the 19th aspect, one embodiment of the present application provides a computer-readable storage medium for storing a computer program. When the computer program is executed on a computer, the computer is enabled to perform the method according to the fifth aspect.

[0082] According to the 20th aspect, one embodiment of the present application provides a computer-readable storage medium for storing a computer program. When the computer program is executed on a computer, the computer is enabled to perform the method according to the sixth aspect.

[0083] According to the 21st aspect, one embodiment of the present application provides a computer program product. When the computer program product is executed on a computer, the computer is enabled to perform the method in either the first aspect or an implementation of the first aspect.

[0084] According to the 22nd aspect, one embodiment of the present application provides a computer program product. When the computer program product is executed on a computer, the computer is enabled to perform the method in either the second aspect or an implementation of the second aspect.

[0085] According to the 23rd aspect, one embodiment of the present application provides a computer program product. When the computer program product is executed on a computer, the computer is enabled to perform the method in either the third aspect or an implementation of the third aspect.

[0086] According to the 24th aspect, one embodiment of the present application provides a computer program product. When the computer program product is executed on a computer, the computer is enabled to perform the method in either the fourth aspect or an implementation of the fourth aspect.

[0087] According to the 25th aspect, one embodiment of the present application provides a computer program product. When the computer program product is executed on a computer, the computer is enabled to perform the method according to the fifth aspect.

[0088] According to the 26th aspect, one embodiment of the present application provides a computer program product. When the computer program product is executed on a computer, the computer is enabled to perform the method according to the sixth aspect.

[0089] According to the 27th aspect, one embodiment of the present application provides a chip. When the chip is executed on a device, the device is enabled to perform the method in either the first aspect or the implementation form of the first aspect.

[0090] According to the 28th aspect, one embodiment of the present application provides a chip. When the chip is executed on a device, the device is enabled to perform the method in either the second aspect or the implementation form of the second aspect.

[0091] According to the 29th aspect, one embodiment of the present application provides a chip. When the chip is executed on a device, the device is enabled to perform the method in either the third aspect or the implementation form of the third aspect.

[0092] According to the 30th aspect, one embodiment of the present application provides a chip. When the chip is executed on a device, the device is enabled to perform the method in either the fourth aspect or the implementation form of the fourth aspect.

[0093] According to the 31st aspect, one embodiment of the present application provides a chip. When the chip is executed on a device, the device is enabled to perform the method according to the fifth aspect.

[0094] According to the 32nd aspect, one embodiment of the present application provides a chip. When the chip is executed on a device, the device is enabled to perform the method according to the sixth aspect.

[0095] According to the 33rd aspect, one embodiment of the present application provides a communication system. The communication system includes a communication device provided in the 7th, 9th, or 11th aspect, and a communication device provided in the 8th, 10th, or 12th aspect. [Brief explanation of the drawing]

[0096] [Figure 1] This is a schematic diagram of a contention-based random access structure according to one embodiment of the present application. [Figure 2] This is a schematic diagram of a non-contention-based random access structure according to one embodiment of the present application. [Figure 3] This is a schematic diagram of the transmission structure between a base station and a UE according to one embodiment of this application. [Figure 4] This is a schematic flowchart of a communication method according to one embodiment of this application. [Figure 5] This is another schematic flowchart of a communication method according to one embodiment of this application. [Figure 6] This is another schematic flowchart of a communication method according to one embodiment of this application. [Figure 7] This is another schematic flowchart of a communication method according to one embodiment of this application. [Figure 8] This is another schematic flowchart of a communication method according to one embodiment of this application. [Figure 9] This is another schematic flowchart of a communication method according to one embodiment of this application. [Figure 10] This is a schematic diagram of the structure of a communication device according to one embodiment of this application. [Figure 11] Another schematic diagram of the structure of a communication device according to one embodiment of this application. [Figure 12]Another schematic diagram of the structure of a communication device according to one embodiment of this application. [Figure 13] Another schematic diagram of the structure of a communication device according to one embodiment of this application. [Figure 14] Another schematic diagram of the structure of a communication device according to one embodiment of this application. [Figure 15] Another schematic diagram of the structure of a communication device according to one embodiment of this application. [Figure 16] Another schematic diagram of the structure of a communication device according to one embodiment of this application. [Modes for carrying out the invention]

[0097] The embodiments of this application will be described below with reference to the attached drawings. It will be clear that the embodiments described are not all but a part of the embodiments of this application. Those skilled in the art will know that, with technological advancements and the emergence of new scenarios, the technical solutions provided in the embodiments of this application may also be applicable to similar technical problems.

[0098] In the specification, claims, and accompanying drawings of this application, terms such as "first," "second," etc., are intended to distinguish similar objects, but do not necessarily In order No number or order is indicated. It should be understood that data referred to in this manner are interchangeable in appropriate circumstances so that embodiments of the invention described herein may be implemented in an order other than that illustrated or described herein. In addition, the phrases “includes,” “equip,” and “have,” and any other variations thereof, are intended to be non-exclusive inclusions. For example, a process, method, system, product, or device that includes a list of steps or units may include other steps or units that are not explicitly listed or that are inherent in such a process, method, product, or device, but are not necessarily limited to those explicitly listed steps or units.

[0099] The technical solutions in the embodiments of this application will be clearly described below with reference to the accompanying drawings of the embodiments of this application. In the description of this application, " / " means "or" unless otherwise specified. For example, A / B may represent A or B. In this application, "and / or" ("and / or", "and / or") only describes correspondences to describe the associated subjects and indicates 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 this 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 singular items or multiple items. For example, at least one of a, b, or c may represent a, b, c, a and b, a and c, b and c, or a, b, and c, where a, b, and c may be singular or plural.

[0100] Embodiments of this 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 it may be another future communication architecture.

[0102] Refer to the contention-based random access architecture shown in Figure 1. Step 1: The UE transmits a random access preamble sequence over 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 first sent, which schedules the physical downlink shared channel PDSCH. The random access response is carried over the PDSCH for transmission, and the RAR carries a timing advance (TA) corresponding to the transmission delay estimated by the base station, RAPID, and a temporary cell-radio network temporary identity (TC-RNTI), 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: Based on the scheduling of UL grants in RAR, a scheduled transmission signal is sent. Step 3 is performed via Msg3, which carries the identification information of the UE 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 conflicts that occur when multiple UEs attempt to use the same random access resource and the same preamble for access.

[0106] Refer to the non-contention-based random access architecture shown in Figure 2. Non-contention-based random access uses dedicated random access resources and preambles transmitted by the base station 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 need to be performed. Dedicated random access resources can be indicated by the PRACH time-frequency resource index (Mask Index).

[0107] In step 2, the base station transmits a PDSCH carrying the RAR to the UE, and the RAR carries the TA, RAPID, TC-RNTI, and UL grant used to transmit Msg3, corresponding to the transmission delay indicated in Msg1. Because the number of receiving antennas on the terminal device is reduced, coverage is lower, and the reception of the RAR and Msg4 in the initial access process is affected. Therefore, coverage Recovery must be carried out through reception, and one aspect is RAR coverage This is a recovery. The terminal device includes a reduced capability UE (REDCAP UE), and the number of antennas in the REDCAP UE may be one transmission antenna and one receiving antenna (i.e., 1T1R), or one transmission antenna and two receiving antennas. In addition, if the bandwidth and number of transmission antennas of the REDCAP UE are reduced, uplink coverage is also affected. For example, coverageRecovery also needs to be performed for transmission on the physical uplink shared channel (PUSCH). coverage Please note that recovery and coverage expansion have the same meaning and can be used interchangeably. Further details will not be provided here.

[0108] In LTE coverage extension technology, PDCCH and PDSCH are configured to be transmitted repeatedly multiple times over LTE, extending the coverage for base stations to transmit PDCCH and PDSCH and improving the accuracy of successful reception by UEs.

[0109] 1. PDCCH is transmitted repeatedly multiple times to extend PDCCH coverage. The maximum number of repetitions of the control channel for scheduling RAR (R max ) is constructed by using RRC signaling , The number of repetitions is shown 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 of DCI format 6-1A is used. When the field is 2 bits... , The columns in Table 1 below are shown to indicate the number of repetitions, where r1, r2, r3, and r4 represent different levels of repetitions, 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 RRC indicates that the maximum number of repetitions is 4, then, corresponding to the table above, r1 corresponds to repetition 1, r2 to repetition 2, and r3 to repetition 4. For example, a network device using DCI , If the number of repetitions is r1, then the number of times PDCCH is repeatedly transmitted is 1. In Example 2, if RRC indicates that the maximum number of repetitions is 16, then corresponding to the table above, r1 corresponds to 2, r2 to 4, r3 to 8, and r4 to 16. . The number of repetitions can be determined by the repetition count level determined by DCI.

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

[0115] The maximum number of PDSCH iterations corresponding to coverage extension level A is configured by using the RRC signaling pdsch--max NumRepetition 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 parameter in Table 2. RuP Indicates the DSCH repetition level. , This indicates the number of repetitions.

[0117] [Table 2]

[0118] For example, if the maximum number of iterations configured in RRC signaling is 16, the candidate iteration count set is {1, 4, 8, 16} obtained by querying the aforementioned table, and the network device uses DCI. and This indicates the number of repetitions. The terminal device refers to the pdsch-maxNumRepetitionCEmodeA parameter and the DCI indication. and The number of repetitions can be determined. For example, two bits in DCI indicate the number of repetitions in {1, 4, 8, 16}, i.e., the number of transmissions in PDSCH, while "Not configured" indicates that PDSCH is not configured.

[0119] For PDCCHs, since system information blocks (SIBs) are carried by PDSCHs for transmission, PDSCHs can be scheduled by PDCCHs. A PDCCH includes one or more control channel elements (CCEs), which are specifically determined based on the aggregation level, for example, as shown in Table 3.

[0120] [Table 3]

[0121] The relationships between the different aggregation levels (ALs) supported by PDCCH and CCE can be represented by the following Table 4.

[0122] [Table 4]

[0123] The Control Resource Set (CORESET) is a new concept introduced in NR, representing the time-frequency resource set used to carry the PDCCH.

[0124] A single UE may consist of multiple CORESETs, each CORESET being bound to only one mapping relationship between a CCE and a resource element group (REG). A REG is the basic unit of PDCCH resource mapping. A single REG is defined as one RB on one OFDM symbol. Resource element group bundles (REG bundles) are a new concept introduced in NR. REGs first form a REG bundle through time-first mapping, and are then mapped to control resources in an interleaved or non-interleaved manner at the granularity of the REG bundle. A single REG bundle (REG combination) contains a group of REGs that are consecutive in the time domain and / or frequency domain. The size of a single 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 a PDCCH are mapped to CORESETs (control-resource sets), which are the basic units of REG bundles. The REGs on 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 a PDCCH, the UE first obtains information about the CORESET, which may be understood as a resource set, and the base station transmits the PDCCH on the PDCCH candidate resource within the CORESET. The UE continues until the PDCCH is successfully decoded. , regulations All candidates are detected through blind detection according to the rules (the rules include detecting each aggregation level, that corresponding different aggregation levels have different candidates, and that different types of scrambling are detected).

[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 terminal device type 1 and terminal device type 2 will be different. The first characteristic information of a terminal device is bandwidth (channel bandwidth), the number of supported or configured resource units (resource units may be RB, RE, subcarrier, RB group, REG bundle, control channel element, subframe, radio frame, slot, minislot, symbol), the number of radio frequency channels, the number of hybrid automatic repeat request (HARQ) processes, supported peak rate, application scenario, latency requirements, processing capacity, protocol version, duplex scheme (half-duplex, full-duplex), and service (video surveillance and mobile broadband (mobile The IoT application includes at least one of the following: broadband (MBB) and other IoT applications; aggregation level information; candidate control channel information; terminal device type; number of transmission antennas of the terminal device; number of receiving antennas of the terminal device; resource; resource index; level; level index; extended level; extended level index; repeat level; repeat level index; repeat count; repeat count index; coverage extended value; coverage extended range index; path loss value; path loss range index; reference signal received power value; reference signal received power range index; reference signal received quality value; reference signal received quality range index; channel quality information value; channel quality information range index; service type; service type index; power saving requirement; power saving requirement index; delay requirement; delay requirement index; pre-specified number of times to detect the first channel; index of pre-specified number of times to detect the first channel; mobility requirement; and mobility requirement index.

[0128] It should be noted that in the embodiments of this application, terminal device type 1 and terminal device type 2 are different terminal types of REDCAP, or terminal device type 1 may be a REDCAP UE and terminal device type 2 may be a regular terminal device (legacy UE), or otherwise. Furthermore, there may be more than two types. This is not limited to the foregoing. In these embodiments of this application, terminal device type 1 and terminal device type 2 being different terminal types that are REDCAP are used as illustrative examples.

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

[0130] Bandwidth (channel bandwidth) is the bandwidth supported or configured by the terminal device. The bandwidths of the terminal devices in this embodiment of the present application may differ. For example, terminal device type 1 may have a bandwidth of 20 megabits per second (Mbps, M) and terminal device type 2 may have a bandwidth of 100 M. Alternatively, terminal device type 1 may have a bandwidth of 20 M and terminal device type 2 may have a bandwidth of 10 M.

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

[0132] The number of transmission antennas and / or receiving antennas specifically means that the number of transmission antenna ports and / or receiving antenna ports of terminal device type 1 is different from that of terminal device type 2. For example, terminal device type 1 has 1 transmission antenna port, terminal device type 1 has 2 receiving antenna ports, terminal device type 2 has 2 transmission antenna ports, and terminal device type 2 has 4 receiving antenna ports.

[0133] The number of radio frequency channels specifically refers to the fact that the number of radio frequency channels for terminal device type 1 differs from that of terminal device type 2. For example, terminal device type 1 has 1 radio frequency channel, while terminal device type 2 has 2 radio frequency channels.

[0134] The number of HARQ processes means that, in particular, the number of HARQ processes supported by terminal device type 1 may differ from the number supported by terminal device type 2. For example, terminal device type 1 supports 8 HARQ processes, while terminal device type 2 supports 16 HARQ processes.

[0135] The supported peak rates specifically mean that the maximum peak rate for 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, while the peak rate supported by terminal device type 2 is 200 Mbps.

[0136] The application scenarios specifically refer to the fact that terminal device type 1 and terminal device type 2 handle different application scenarios. For example, terminal device type 1 is applied to industrial wireless sensing, video surveillance, wearable devices, etc., while terminal device type 2 is applied to mobile communications, video internet access, etc.

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

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

[0139] The protocol release refers specifically to the fact 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 configurations (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 a real-world scenario to which this embodiment applies, please refer to the transmission architecture between the base station and the UE shown in Figure 3. The base station is an eNB or gNB, and the UE includes terminal device type 1, terminal device type 2, and a normal terminal device. The base station receives random access requests from terminal device type 1, terminal device type 2, and the normal terminal device. Terminal device type 1, terminal device type 2, and the normal terminal device access the network and receive and transmit data to and from 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, the 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, modem, or chip system) incorporated within the aforementioned devices. Terminal devices are configured to connect people, things, machines, etc., and can be widely used in a variety of scenarios, including, but not limited to, cellular communications, device-to-device (D2D), vehicle-to-everything (V2X), machine-to-machine / machine-type communications (M2M / MTC), the Internet of Things (IoT), virtual reality (VR), augmented reality (AR), industrial control, self-driving, remote medical care, smart grids, smart furniture, smart offices, smart wearables, smart transportation, smart cities, unmanned aerial vehicles, and robots. Terminal devices may sometimes be referred to as user equipment (UE), terminals, access stations, UE stations, remote stations, wireless communication devices, user equipment, or similar. For the sake of clarity, in this application, UE is used as an example to describe a terminal device.

[0145] The network devices in this application include, for example, access network devices and / or core network devices. An access network device is a device having wireless transceiver functionality and is configured to communicate with terminal devices. Access network devices include, but are not limited to, base stations (BTS, NodeB, eNodeB / eNB, gNodeB / gNB) in communication systems, transmission reception points (TRPs), base stations subsequently developed from 3GPP®, access nodes, wireless relay nodes, wireless backhaul nodes, and similar 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 similar. Multiple base stations may support the aforementioned network using the same access technology or using different access technologies. A base station may include one or more identical or non-identical site transmission reception points. A network device may also be a radio controller, a central unit (CU), and / or a distributed unit (DU) in a cloud radio access network (CRAN) scenario. Network devices may also be servers, wearable devices, in-vehicle devices, or similar. For example, a network device in V2X technology may be a roadside unit (RSU). The following explanation uses an example where 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 with a terminal device via a relay station. A terminal device may communicate with multiple base stations using different access technologies. The core network device is configured to implement functions such as mobility management, data processing, session management, and policy and billing.The names of devices implementing core network functions in systems with different access technologies may vary. This is not limited to the present application. A 5G system is used as an example. Core network devices include access and mobility management functions (AMF), session management functions (SMF), user plane functions (UPF), or similar.

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

[0147] 1. Terminal devices do not process messages sent by network devices by using adjustment coefficients.

[0148] In this implementation, the terminal device determines whether to access the network based on access status information and determines the first number of repetitions for the first channel based on a first set of repetition counts. 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 the operation to determine the first number of repetitions. 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, a bit value of 1 indicates that the terminal device can access the network, and a bit value of 0 indicates that the terminal device cannot access the network.

[0149] In actual applications, terminal devices may or may not determine access status information. Details are explained below.

[0150] 1. Determine the access status information.

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

[0152] 401: 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.

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

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

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

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

[0157] Case 2: After sending an 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 receiving antennas of the terminal device.

[0158] Case 3: After the terminal device sends an access request and gains access to the network, the terminal device transmits first characteristic information over the physical uplink shared channel. For example, the first characteristic information may be the terminal device's bandwidth, the number of the terminal device's transmission antennas, or the number of the terminal device's receiving antennas.

[0159] Case 4: The network device does not need to determine the first information based on the first characteristic information. The network device decides whether to allow terminal devices to access the network based on the load situation at that time. For example, when the network load is high, i.e., when there are many terminal devices accessing the network, REDCAP UE or type terminal devices are not allowed to access the network. When the network load is low, i.e., when there are few terminal devices accessing the network, REDCAP UE or type terminal devices are allowed to access the network.

[0160] In cases 1 to 4 described above, when a 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, if the network device may only support legacy UEs but not REDCAP UEs, it is determined that the terminal device is not allowed to access the network. If the terminal device is a legacy UE, or if the network device also supports REDCAP UEs, it is determined that the terminal device is allowed to access the network.

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

[0162] In response to this, the indication methods by which a terminal device indicates the device type to a network device (i.e., uplink indication methods) include transmission via Msg1, transmission via Msg3, transmission via Message A (MsgA), transmission via Message 5 (Msg5), or transmission via PUSCH carrying UE capability information. A terminal device may indicate the device type by using the correspondence between transmission resources and device types, or is The device type can be indicated by using a set or field. Terminal devices are based on messages from network devices. Ki Can the communication method be determined, or can it be determined according to predefined rules? te IThe communication method can be determined. For example, a network device may use an MIB to indicate at least one Msg1 resource corresponding to at least one device type. After receiving the MIB, a terminal device may determine the corresponding Msg1 resource based on the MIB and the device type, and send a Msg1 to the network device based on the corresponding Msg1 resource. The network device identifies the corresponding device type based on the Msg1 resource. In another example, the network device may use a PBCH to indicate that the terminal device uses one bit of the Msg3 message to report the device type. In yet another example, the standard predefines that the terminal device reports the device type in MsgA.

[0163] It should be understood that the aforementioned multiple downlink indication methods and multiple uplink indication methods can be combined with each other.

[0164] A network device may determine access status information based on a first characteristic information; that is, the network device first determines whether a terminal device can access the network based on the first characteristic information. If a terminal device cannot access the network, the network device may set a bit status indicating that the terminal device is not permitted to access the network. The bit status is access status information determined by the network device, and that is, 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 not REDCAP UE, the network device may set a bit status indicating that the terminal device is not permitted to access the network. Specifically, the bit status may be a bit value. Optionally, there may be terminal devices for which other bit statuses correspond to other different first characteristic information, indicating whether terminal devices of other device types are permitted to access the network.

[0165] In other examples, the bit status may be 0 or 1. If the network device supports only legacy UE and not REDCAP UE, the bit status is set to 0 when the device type is terminal device type 1 or terminal device type 2. That is, the terminal device is not allowed to access the network. When the device type is legacy UE, the bit status is set to 1, that is, the terminal device is allowed to access the network. This is not limited to this embodiment.

[0166] When a terminal device is not permitted 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 a terminal device is permitted to access the network, the network device may determine a first repetition count, repetition level information, and a first maximum repetition count corresponding to a first channel, according to predefined rules. The first channel is a physical channel used by the network device and the terminal device to transmit information, and this 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 made by the network device on the first channel.

[0169] The repetition level information reflects the number of times the terminal device can receive the first channel.

[0170] The first maximum number of iterations is used to define the range of selectable iterations, while referring to the iteration level information.

[0171] The repetition level information may indicate a first set of repetitions corresponding to a first channel. The first set of repetitions is the set of possible repetitions for reception or transmission by the terminal device, and the first set of repetitions may include one or more first repetitions. 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 is 1, or that the first repetition is a first predefined value, where the first predefined value is the maximum number of repetitions R max It could be, or it could be any other value. For example,

[0172]

number

[0173] This is not limited in this specification. The first value may be set to 1 or other values. This is not limited in this specification.

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

[0175]

number

[0176] This may also be the case. The network device may then configure first indication information (e.g., DCI) indicating the first iteration count in four iteration counts. The iteration level information for terminal device type 2 may be set to a third value, for example, 2, which indicates that the first set of iteration counts corresponding to terminal devices of that device type contains two iteration counts. For example, two iteration counts are R max , and

[0177]

number

[0178] Alternatively, the network device may then configure first indication information (e.g., DCI) indicating the first number of repetitions in two sets of repetitions.

[0179] When the access status information indicates that the terminal device is not permitted to access the network, the first information in this embodiment of the application includes only the access status information, or the first information includes the access status information and the repetition level information, with the information indicated by the repetition level information being empty. When the access status information indicates that the terminal device is permitted to access the network, the first information includes the access status information, the repetition level information, and a first maximum number of repetitions. 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 number of repetitions being carried separately.

[0180] 403: The network device sends access status information and / or repetition level information to the terminal device, and 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, it sends the terminal device first information, which includes the access status information and the repetition level information. Optionally, if the terminal device is not permitted to access the network, the repetition level information is empty, or the network device sends only the access status information to the terminal device.

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

[0183] A terminal device may determine access status information based on the first information it receives, and based on the access status information, determine whether the terminal device can access the network. For example, a bit status of 1 in the first information may indicate that the terminal device can access the network, and a bit status of 0 may indicate that the terminal device cannot access the network. Alternatively, if the bit status has a value, this indicates that the terminal device can access the network. If 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 it 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 permitted to access the network, the terminal device determines that it cannot access the network and stops monitoring the information transmitted by the network device through the physical channel.

[0186] 406: The terminal device determines the first number of repetitions.

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

[0188] 407: The terminal device transmits on the 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 series in which the network device 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 that carries a RAR, a PDCCH for scheduling a PDSCH that carries a Msg4, or a PDCCH for scheduling another PDSCH that carries downlink data. When the first channel is a PDSCH, the terminal device receives a PDSCH or other PDSCH that carries downlink data based on the first number of repetitions. The PDSCH may be a PDSCH that carries an SIB, a PDSCH that carries a RAR, or a PDSCH that carries a Msg4. When the first channel is a PUSCH, the step performed in step 407 may be the UE transmitting a PUSCH based on a first number of repetitions. The PUSCH may be a PUSCH carrying Msg3, or another PUSCH carrying uplink data. This is not particularly limited herein.

[0190] In the embodiments of this application, the terminal device determines whether it can access the network based on access status information transmitted by the network device, thereby avoiding the waste of network resources caused by the terminal device still monitoring the first channel even when network access is not supported, thereby saving network resources and improving communication efficiency.

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

[0192] 2. Network devices do not need to send access status information to terminal devices.

[0193] In actual applications, network devices may not send access status information to terminal devices. Access status information may be indicated by other information in the first set of information, such as a set of repetitions. Alternatively, network devices may not limit the type of terminal device; that is, different terminal devices may access the network. Network devices may send the first set of information, which directly includes the set of repetitions, to terminal devices. Further details are described separately below.

[0194] 2.1. The network device indicates the number of repetitions to the terminal device by using the first information.

[0195] In this embodiment, the terminal device can determine a first set of repetition counts based on repetition level information in the first information, or it can determine a first set of repetition counts based on first feature information in the first information.

[0196] 2.1.1. Network devices shall indicate to terminal devices whether the terminal device can access the network and a first set of repetition counts by using repetition level information, thereby reducing the use of access status information and conserving network resources.

[0197] See Figure 5. Other steps of the communication method in this embodiment include 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. Further details will not be described again here.

[0200] 502: The network device determines the repetition 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 for the terminal type is used. Further details will not be described here.

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

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

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

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

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

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

[0208] The terminal device obtains repetition level information based on the first information received, and determines whether the terminal device is allowed to access the network based on the value of the repetition level information. For example, if the repetition level information is value 0, the terminal device may determine that it is not allowed to access the network and proceed to step 505. If the repetition level information is any other value, the terminal device may determine that it is allowed to access the network and proceed to step 506.

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

[0210] 506: The terminal device determines the first number of repetitions.

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

[0212] For steps 505 to 507 in this embodiment, please refer to the relevant explanations for steps 405 to 407 in the embodiment shown in Figure 4. Further details will not be explained again here.

[0213] In embodiments of this application, the terminal device may determine whether it can access the network based on access status information transmitted by the network device, thereby avoiding the waste of resources caused by the terminal device still monitoring the first channel even when network access is not supported, or it may improve the flexibility of the network configuration by determining the first number of repetitions to transmit the first channel based on the received set of repetitions.

[0214] Furthermore, terminal devices use repetition level information to indicate whether they can access the network, which reduces information exchange, conserves network resources, and improves communication efficiency.

[0215] 2.1.2. The network device indicates the first repetition count to the terminal device by using second characteristic information, so that the terminal device can obtain the first repetition count to receive the first channel without blind detection, which saves network resources.

[0216] See Figure 6. Other steps of the communication method in this embodiment include 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 description of step 401 in the embodiment shown in Figure 4. Further details will not be explained here.

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

[0220] After receiving an access request, the network device may determine a second set of characteristic information corresponding to the terminal device. This second set of characteristic information is used by the network device to indicate the device type of the terminal device. The second set of characteristic information is included in the first set of characteristic information. Rupa Please refer to Lameta.

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

[0222] In this embodiment, the first channel may be a PDCCH or another channel, such as a PDSCH or PUSCH. This is not particularly limited herein. In this embodiment, the second feature information is used as an example. When a network device allows a terminal device to access the network, the first repetition count of the first channel is related to the second feature information. For example, when the device type of the terminal device is legacy UE, the first repetition count may be 1 or a first predefined value. When the device type of the terminal device is terminal device type 1, the first repetition count may be 16. When the device type of the terminal device is terminal device type 2, the first repetition count may be 4. The values ​​described above are merely examples and are not particularly limited herein.

[0223] For example, the second feature information could be aggregation level information. Aggregation level information indicates the aggregation level, candidate control channel information indicates the number of candidate PDCCHs, the aggregation levels include {1, 2, 4, 8, 16} and the number of candidate PDCCHs corresponding to the aggregation level, and the PDCCH repetition count is associated with the aggregation level and / or the number of candidate PDCCHs. For example, the number of repetitions associated with aggregation level 16 is N, the number of repetitions associated with aggregation level 8 is 2N, the number of repetitions associated with aggregation level 4 is 4N, and so on, with the association between the repetition count and the number of candidate PDCCHs including the following: 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. In this embodiment, 、The association scheme can be defined. For example, one aggregation level corresponds to one repetition count. For instance, 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, the number of different candidate PDCCHs may correspond to one repetition count. For example, a larger number of candidate PDCCHs indicates a smaller repetition count, where n8 candidate PDCCHs corresponds to 1 repetition count, and n1 candidate PDCCHs corresponds to 8 repetition counts. Specifically, the association relationships can be pre-configured on network devices and terminal devices, or configured in other ways. For example, a network device may notify terminal devices via RRC messages. This is not particularly limited in this specification. For example, the association relationships may be determined based on first or second characteristic information.

[0224] [Table 5]

[0225] 603: The network device transmits a 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 aggregation level information or candidate control channel information based on the first number of iterations, the network device transmits the aggregation level information or candidate control channel information to the terminal device using the second characteristic information, and the terminal device receives the second characteristic information.

[0227] 604: The terminal device determines the first number of repetitions.

[0228] After receiving the second feature information, the terminal device may determine the first iteration count based on a pre-configured association relationship. The association relationship may indicate the number of candidate PDCCHs corresponding to the second feature information and one of the second feature information. For example, the second feature information may be aggregation level information or candidate control channel information. Based on the pre-configured association relationship, the terminal device selects the corresponding first iteration count from the number of candidate PDCCHs corresponding to the aggregation level information or candidate control channel information, and the aggregation level information or candidate control channel may be indicated to the terminal device by a network device using upper-layer signaling or physical-layer signaling. The upper-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 herein.

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

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

[0231] In this embodiment, the terminal device obtains the first repetition count of the first channel by matching the association relationship with the second feature information transmitted by the network device, eliminating the need for blind detection of 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 transmits first information to the terminal device that directly includes a set of repetition counts.

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

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

[0235] See Figure 7. Other steps of the communication method in this embodiment include 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 details regarding step 701 in this embodiment, please refer to the description of step 401 in the embodiment shown in Figure 4. Further details will not be explained here.

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

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

[0240] In one possible implementation, the first iteration count of the first channel is associated with a first characteristic of the terminal device. For example, the first characteristic is the device type. When a network device allows a terminal device to access the network, if the device type of the terminal device is legacy UE, the network device may determine that the first iteration count is 1 or a first predefined value. If the device type of the UE is terminal device type 1, the network device may determine that the first iteration count is 16. If the device type of the terminal device is terminal device type 2, the network device may determine that the first iteration count is 4. The values ​​mentioned above are merely examples and are not particularly limited in this specification. The method for determining the second iteration count of the second channel is the same as the method for determining the first iteration count, and will not be described in detail again here. However, there may be a linear relationship between the second and first iteration counts.

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

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

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

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

[0245] When the first set of repetition counts represents a single maximum repetition count, the terminal device may determine multiple repetition counts indicated by the maximum repetition count according to a predefined rule or table, and may determine the first repetition count from the multiple repetition counts based on the first indication information. When the first set of repetition counts represents multiple repetition counts, the terminal device may directly determine the first repetition count based on the first indication information, and then obtain the second repetition count by using a linear arithmetic algorithm based on the first repetition count and the second set of repetition counts. Specifically, when the second set of repetition counts contains only one repetition count, the repetition count is the first parameter, and the second repetition count can be directly calculated based on the first repetition count. When the second set of repetition counts contains multiple repetition counts, the terminal device may first indicate the first parameter in the second set of repetition counts by using 1-bit data in the first indication information, and then obtain the second repetition count by linear calculation based on the first parameter and the first repetition count.

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

[0247] A linear operation relationship describes the relationship between a PDSCH iteration count set or PDSCH iteration count and one or more of the following: PDCCH aggregation level, device type of terminal devices supported by the network device, or capabilities of terminal devices supported by the network device (e.g., number of receiving antennas). For example, the PDSCH iteration count is related to the device type of terminal devices supported by the network device. For terminal devices of terminal device type 1, the PDSCH iteration count is high, and for terminal devices of terminal device type 2, the PDSCH iteration count is low. A legacy UE corresponds to a lower iteration count. Alternatively, a high PDCCH aggregation level results in good PDCCH decoding performance and good coverage. In this case, the PDSCH iteration count may be lower. In conclusion, linear operation algorithms can be adaptively tuned.

[0248] 705: The network device transmits the first channel and the second channel to the terminal device, and in response, 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 a determined first number of repetitions and a PDSCH based on a second number of repetitions, or receives a PDSCH based on a first number of repetitions and a PDCCH based on a second number of repetitions.

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

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

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

[0253] See Figure 8. Other steps of the communication method in this embodiment include 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 iterations and a second set of iterations.

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

[0257] For steps 801 to 803 in this embodiment, please refer to the relevant explanations for steps 701 to 703 in the embodiment shown in Figure 7. Further details will not be explained again here.

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

[0259] Regarding the determination of the first repetition count and the second repetition count, refer to the determination method in step 704 in the embodiment shown in FIG. 7. For details, it will not be described again here.

[0260] For example, the first channel may be PDCCH and the second channel may be PUSCH, or the first channel may be PUSCH and the second channel may be PDCCH. This is not particularly limited herein.

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

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

[0263] In other examples, when the first channel is PUSCH and the second channel is PDCCH, the terminal device may alternatively transmit PUSCH based on the first repetition count and receive PDCCH based on the second repetition count. This is not particularly limited herein.

[0264] In this embodiment, the network device indicates to the terminal device the repetition count of the first channel and the repetition count of the second channel by using DCI. It is necessary to indicate only the repetition count of one channel, or there is less bit data required to indicate the second repetition count. Therefore, network resources can be saved and communication efficiency can be improved.

[0265] 2. The terminal device processes a first maximum number of repetitions or a first set of repetitions from the network device by using an adjustment factor to determine the actual first number of repetitions to receive 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. Other steps of the communication method in this embodiment include the following steps.

[0267] 901: 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.

[0268] For step 901 in this embodiment, please refer to the relevant explanation for step 401 in the embodiment shown in Figure 4. Further details will not be explained again here.

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

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

[0271] In this embodiment, when a network device determines that a terminal device is permitted to access the network, the first repetition count of the first channel is associated with the device type. The first channel may be a PDCCH or other channels, such as a PDSCH or PUSCH. This is not particularly limited herein. For example, when the device type of the terminal device is legacy UE, the first repetition count may be 1 or a first predefined value. When the device type of the terminal device is terminal device type 1, the first repetition count may be 16. When the device type of the terminal device is terminal device type 2, the first repetition count may be 4. The values ​​described above are merely examples and are not particularly limited herein.

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

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

[0274] The first maximum number of iterations or the second set of iterations may be configured by using upper-layer signaling or physical layer signaling, such as RRC signaling or MAC CE, or physical layer signaling, such as DCI.

[0275] 904: The terminal device determines the first number of repetitions based on the adjustment coefficient.

[0276] After receiving a first maximum number of repetitions or a first set of repetitions, the terminal device may determine a first number of repetitions from the first maximum number of repetitions or the first set of repetitions based on an adjustment factor. In one example, after receiving a first maximum number of repetitions from a network device, the terminal device may adjust the first maximum number of repetitions based on an adjustment factor to obtain a second maximum number of repetitions that actually corresponds to the terminal device. The terminal device obtains a number of possible repetitions based on the second maximum number of repetitions according to a predefined rule or table, and then determines a first number of repetitions from the number of possible repetitions based on first indication information from the network device. The first indication information may be physical layer signaling or upper layer signaling. The physical layer may be DCI, and the upper layer signaling may be RRC or MAC CE. Network devices may preconfigure adjustment factors for terminal devices by using upper-layer signaling, or predefine adjustment factors in protocols between network devices and terminal devices, or indicate adjustment factors to terminal devices by using physical-layer signaling, or enable terminal devices to determine adjustment factors by using first feature information.

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

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

[0279] The adjustment coefficient is configured by the network device for a terminal device using upper-layer signaling or physical-layer signaling, where upper-layer signaling may include RRC messages or MAC CEs, physical-layer signaling may be first indication information such as DCI, or the aforementioned adjustment coefficient may be predefined by the network device, or the adjustment coefficient may be associated with first characteristic information. For example, the adjustment coefficient may be indicated by using DCI. For example, 1 or 2 bits in DCI indicate the value of the adjustment coefficient in the adjustment coefficient set, which may be configured by using RRC signaling. Alternatively, the adjustment coefficient may be a value in the iteration count set of a legacy UE, a value in the iteration count set of terminal device type 1, or a value in the iteration count set of terminal device type 2. For example, the adjustment coefficient may be indicated by using RRC. For example, RRC signaling constitutes values ​​within a set of adjustment coefficients, which may be predefined, or RRC signaling constitutes values ​​within a set of iteration counts for legacy UEs as adjustment coefficients. Alternatively, RRC signaling constitutes values ​​within a set of iteration counts for terminal device type 1 as adjustment coefficients, or RRC signaling constitutes values ​​within a set of iteration counts for terminal device type 2 as adjustment coefficients. For example, the adjustment coefficients are determined based on first characteristic information. If the first characteristic information for terminal device type 1 differs from that of terminal device type 2, different adjustment coefficients are defined. For example, the adjustment coefficient for a terminal device with one receiving antenna is greater than that for a terminal device with two receiving antennas, and the adjustment coefficient for a terminal device with strong receiving capability is smaller than that for a terminal device with weak receiving capability. That is, the number of iterations for a terminal device with strong receiving capability is less than that for a terminal device with weak receiving capability.

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

[0281] Regarding step 905 in this embodiment, refer to the related description of step 407 in the embodiment shown in FIG. 4. For details, it will not be described again here.

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

[0283] Hereinafter, a communication device in an embodiment of the present application will be described. Refer to FIG. 10. In the embodiment of the present application, the structure of the communication device 1000 is a transceiver unit 1001 configured to receive first information from a network device, determine the first number of repetitions of the first channel based on the first set of repetition numbers, and transmit the first channel based on the first number of repetitions; a processing unit 1002 configured to determine access status information and / or the first set of repetition numbers of the first channel based on the first information, the first set of repetition numbers including at least one number of repetitions, and determine whether to access the network based on the access status information.

[0284] In this embodiment, the access status information is determined based on the bit status in the first information, the bit status indicating that the terminal device is not permitted to access the network, and the bit status is related 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 is specially configured to determine the first set of repetition numbers based on the repetition level information.

[0286] In this embodiment, the transceiver unit 1001 is The first number of repetitions is determined based on a first maximum number of repetitions and a first set of repetitions, and the first maximum number of repetitions is specifically configured to be achieved by using wireless resource control messages.

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

[0288] In this embodiment, the first information includes second feature information, the second feature information is used to determine the first set of repetitions, and the second feature information is related to the first number of repetitions.

[0289] In this embodiment, the first information is conveyed via a wireless resource control message.

[0290] The transceiver unit 1001 specifically consists of: The system is configured such that the first number of repetitions is determined based on the first indication information and the first set of repetition counts, and the first indication information is information from a network device.

[0291] In this embodiment, the transceiver unit 1001 is The second number of repetitions for the second channel is determined based on the first number of repetitions and the first parameter, where the first parameter is a parameter from the network device. The first channel is a physical downlink control channel, and the second channel is a physical downlink sharing channel, or The first channel is a physical downlink sharing 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 sharing channel, or The first channel is a physical uplink sharing channel, and the second channel is a physical downlink control channel, and so on.

[0292] In this embodiment, the transceiver unit 1001 is It is further configured to obtain a second number of iterations by performing a linear operation on the first number of iterations and the first parameter.

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

[0294] The following describes a communication device in one embodiment of this application. See Figure 11. In this embodiment of the application, other structures of the communication device 1100 are as follows: A processing unit 1101 configured to determine the first characteristic information of a terminal device, The system includes a transceiver unit 1102 configured to transmit first information to a terminal device based on first characteristic information, and to transmit a first channel based on a first number of repetitions, wherein the first information indicates access status information and / or a first set of repetitions for the first channel, the first set of repetitions includes at least one repetition count, and the first number of repetitions is determined based on the first characteristic information.

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

[0296] In this embodiment, 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 first characteristic information.

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

[0298] In this embodiment, the first information includes second feature information, the second feature information is used to determine the first set of repetitions, and the second feature information is related to the first number of repetitions.

[0299] In this embodiment, the transceiver unit 1102 is The system is further configured such that a first indication is determined based on the first characteristic information, and the first indication is used to determine the first number of iterations.

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

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

[0302] See Figure 12. In one embodiment of this application, Communication deviceOther structures of 1200 are, A transceiver unit 1201 is configured to receive a first maximum number of repetitions or a first set of repetitions from a network device, the first set of repetitions includes at least one repetition count, and to transmit a first channel based on the first number of repetitions. The system includes a processing unit 1202 configured to determine a first number of iterations for a first channel based on a first maximum number of iterations or a first set of iterations and an adjustment coefficient.

[0303] In this embodiment, the processing unit 1202 is Based on the first maximum number of repetitions and the adjustment coefficient, the second maximum number of repetitions is determined. The first number of iterations is determined based on a second maximum number of iterations and first indication information, and the first indication information is specifically configured to be information from a network device.

[0304] In this embodiment, the processing unit 1202 is Based on the first set of repetitions and the adjustment coefficient, the second set of repetitions is determined. The first number of repetitions is determined based on a second set of repetition counts and first indication information, and the first indication information is specifically configured to be information from a network device.

[0305] In this embodiment, the adjustment coefficient is pre-configured by the network device by using upper-layer signaling, or The adjustment coefficient is either predefined by the network device or The adjustment coefficient 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 can perform operations that are performed by the terminal device in the embodiment shown in Figure 9. Further details will not be described here.

[0307] See Figure 13. In one embodiment of this application, other structures of the communication device 1300 are as follows: A processing unit 1301 configured to determine the device type of a terminal device, The system includes a transmission unit 1302 configured to transmit a first maximum number of repetitions or a first set of repetitions to a terminal device based on the device type, 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 repetitions being determined based on the first number of repetitions and an adjustment coefficient.

[0308] In this embodiment, the transmitting unit 1302 is Adjustment coefficients can be pre-configured by using upper-level signaling, or Either predefine the adjustment coefficient, or The adjustment coefficient is shown by using physical layer signaling, or The system is further configured to determine an adjustment coefficient based on the first characteristic information.

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

[0310] In accordance with the method and virtual device embodiments provided in this application, one embodiment of this application further provides a communication device. The hardware structure of the communication device will be described below.

[0311] Figure 14 shows a communication device according to one embodiment of the present application. 1400This is a schematic diagram of the structure. The communication device 1400 may be a terminal device as shown in Figures 4 to 9, and is configured to implement the method corresponding to the terminal device in the method embodiment described above. Alternatively, the communication device may be a network device as shown in Figures 4 to 9, and is configured to implement the method corresponding to the network device in the method embodiment described above. . machine For details regarding performance, please refer to the description in the above-mentioned method embodiment.

[0312] The communication device 1400 comprises one or more processors 1401. The processor 1401 may also be referred to as a processing unit. , regulation The processor 1401 may implement the functions. The processor 1401 may be a general-purpose processor, a dedicated processor, or similar. For example, the processor 1401 may include 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, memory, and / or a neural network processing unit. The baseband processor may be configured primarily to 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. Different processors may be independent 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 device 1400 includes one or more memories 1402 configured to store instructions 1404, the instructions being executed on the processor, thereby causing the terminal device 1400 to perform the method described in the above-described method embodiment. Optionally, the memories 1402 may further store data. The processor and memory may be disposed separately or integrated.

[0314] Optional: Communication device1400 This includes instruction 1403 (which may sometimes be referred to as code or program), instruction 1403 which may be executed on the processor, thereby causing the communication device 1400 to perform the method described in the above embodiments. Optionally, the processor 1401 may store data.

[0315] Optionally, the communication device 1400 may further include a transceiver 1405 and an antenna 1406. The transceiver 1405 may be referred to as a transceiver unit, transceiver, transceiver circuit, transceiver, input / output interface, or similar, and is configured to implement the transceiver function of the communication device 1400 through the antenna 1406.

[0316] Optionally, the communication device 1400 may further include one or more components such as a wireless communication module, an audio module, an external memory interface, 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. In some embodiments, it can be understood that the UE 1400 may include more or fewer components, or that some components may be integrated, or that 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 herein may be implemented as an integrated circuit (IC), analog IC, radio frequency integrated circuit (RFIC), hybrid signal IC, application-specific integrated circuit (ASIC), printed circuit board (PCB), electronic device, or similar. The communication device implementing the communication device described herein may be a standalone device (e.g., a standalone integrated circuit, a mobile phone) or part of a larger device (e.g., a module that can be incorporated into other devices). For further details, see the preceding descriptions of terminal devices and network devices, which are not 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 this application provides a communication device. The communication device may be used in the embodiments described above. 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 comprises a transceiver module configured to support the terminal device when implementing transceiver functionality, and a processing module configured to support the terminal device when processing signals.

[0323] Figure 15 shows a communication device according to one embodiment of the present application. 1500 This is a schematic diagram of the structure.

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

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

[0326] Those skilled in the art will understand that, for the sake of simplicity, Figure 15 shows only one memory and one processor. In some embodiments, the communication device 1500 may comprise multiple processors and memories. Memory may also be referred to as a storage medium, storage device, or similar. This is not limited to this embodiment of the present 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, while 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 shown in Figure 15. Those skilled in the art will understand that the baseband processor and the central processing unit may be independent processors and be interconnected by using technologies such as buses. The communication device 1500 may have multiple baseband processors to adapt to different network standards. The communication device 1500 may include multiple central processing units to increase the processing capacity of the communication device 1500. The components of the communication device 1500 may be connected via various buses. The baseband processor may also be referred to as a baseband processing circuit or baseband processing chip. The central processing unit may also be referred to as a central processing circuit or central processing chip. The functions for processing communication protocols and communication data may be built into the processor or stored in a memory unit in the form of a software program, and the processor implements the baseband processing functions by executing the software program.

[0328] In one example, an antenna and control circuit having transceiver functionality may be considered as a transceiver unit 1510 of the communication device 1500, and a processor having processing functionality may be considered as a processing unit 1520 of the communication device 1500. As shown in Figure 15, the communication device 1500 comprises a transceiver unit 1510 and a processing unit 1520. The transceiver unit may also be referred to as a transceiver machine, transceiver, transceiver device, or similar. Optionally, a component configured to implement receiving functionality in the transceiver unit 1510 may be considered a receiving unit, and a component configured to implement transmitting functionality in the transceiver unit 1510 may be considered 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, receiving machine, or receiving circuit, and the transmitting unit may also be referred to as a transmitter, transmitting machine, or 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 application may correspond to the terminal device in the method embodiment described above. The transceiver unit 1510, processing unit 1520, and similar components within the communication device 1500 may implement the functions and / or various steps and methods implemented by the terminal device in the method embodiment described above. For brevity, further details are not described here.

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

[0333] Figure 16 shows a communication device according to one embodiment of the present application. 1600 This is a schematic diagram of the structure. As shown in Figure 16, the communication device 1600 is applicable to the function of the network device in the method embodiment shown in Figures 4 to 9. The communication device comprises 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 the 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 about the terminal device and transmits it to the radio frequency device 1602. The radio frequency device 1602 processes information about the terminal device and then transmits the processed information to the antenna 1603 It is sent to the terminal device via [this method].

[0334] The baseband device 1601 comprises one or more processing units 16011, a storage unit 16012, and an interface 16013. The processing unit 16011 is configured to support a communication device when performing the functions of a network device in the method embodiment described above. 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 comprises an interface circuit configured to input and output information. In one implementation, the processing unit is an integrated circuit, for example, one or more ASICs, one or more DSPs, one or more FPGAs, or a combination of these types of integrated circuits. These integrated circuits can be integrated into one 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 on a different chip from the processing element 16011, i.e., in an off-chip storage element. The memory unit 16012 may be a single memory, or it may be the name of a collection of multiple memories or memory elements.

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

[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 application may correspond to the network device in the method embodiment described above. Interfaces 16013, processing units 16011, and similar components within the communication device 1600 may implement the functions and / or various steps and methods implemented by the network device in the method embodiment described above. For brevity, further details are not described here.

[0339] Those skilled in the art will notice, in combination with the examples described in the embodiments disclosed herein, that the units and methods may be implemented by electronic hardware or by 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 functions described for each specific application, but such implementations should not be considered beyond the scope of this application.

[0340] It should be understood that, in some embodiments provided in this application, the systems, apparatus, and methods disclosed may be implemented in other ways. For example, the embodiments of the apparatus described are merely examples. For instance, unit division is merely a logical functional division, and units described as separate parts may or may not be physically separate, and parts represented as units may or may not be physical units. That is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected based on what is actually required to achieve the objectives of the solution of the embodiment.

[0341] When a function is implemented in the form of a software function unit and sold or used as an independent product, the function may be stored on a computer-readable storage medium. Based on such understanding, the technical solution of the present application may be implemented in the form of a software product. The computer software product includes a number of instructions stored on a storage medium 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 method described in the embodiments. The aforementioned computer-readable storage medium may be any available medium accessible by a computer. For example, but not limited to, computer-readable media may include random access memory (RAM), read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM), universal serial bus flash disk, removable hard disk, or other optical disc storage devices, disk storage media, or other magnetic storage devices, or may be used to carry or store desired program code in the form of instructions or data structures, and may be used by computer access to any other media.In addition, through illustrative, but not limited, descriptions, 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 above explanation is merely a description of this application. Ru Mi This is merely a description of the form and is not intended to limit the scope of protection of the embodiments of this application. Any modifications or alternative forms that are readily conceivable to a person skilled in the art within the scope of the art disclosed in the embodiments of this application shall fall within the scope of protection of the embodiments of this application. Accordingly, the scope of protection of the embodiments of this application shall be subject to the scope of protection of the claims. [Explanation of Symbols]

[0343] 1000 Communication devices 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 Transmitter Unit 1400 Communication equipment 1401 Processor 1402 memory 1403 Command 1404 Instructions 1405 Transceiver 1406 Antenna 1500 Communication devices 1510 Transceiver Unit 1520 Processing Units 1600 Communication equipment 1601 Baseband device 1602 Radio frequency equipment 1603 Antenna 16011 Processing Unit 16012 Memory Unit 16013 Interface

Claims

1. A step of receiving first information, wherein the first information is carried in a system information block, the first information is used to indicate an indication scheme for the device type of a terminal device, and the indication scheme for the device type of the terminal device includes indicating the device type of the terminal device via message 3 (Msg3), or indicating the device type of the terminal device via message 1 (Msg1) and Msg3. A step of indicating the device type of the terminal device using the indication method, wherein the device type of the terminal device includes a Redcap User Equipment (REDCAP UE) A communication method that includes this.

2. The device type of the terminal device is indicated by the correspondence between the transmission resource and the device type, or The communication method according to 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 frequency-domain resource and / or code-domain resource of a random access preamble.

4. The communication method according to any one of claims 1 to 3, further comprising the step of determining the indication scheme for the device type of the terminal device based on the first information from the network device.

5. The communication method according to any one of claims 1 to 4, further comprising the step of receiving a second information, the second information being used to determine an indication scheme for a second device type of a terminal device, wherein the second device type of the terminal device is different from the REDCAP UE.

6. A step of transmitting first information, wherein the first information is carried in a system information block, the first information is used to indicate an indication scheme for the device type of a terminal device, and the indication scheme for the device type of the terminal device includes indicating the device type of the terminal device via message 3 (Msg3), or indicating the device type of the terminal device via message 1 (Msg1) and Msg3. A step of determining the device type of the terminal device based on the indication method, wherein the device type of the terminal device includes a Redcap User Equipment (REDCAP UE) A communication method that includes this.

7. The device type of the terminal device is indicated by the correspondence between the transmission resource and the device type, or The communication method according to claim 6, wherein the device type of the terminal device is indicated by a bit or a field.

8. The communication method according to claim 7, wherein the transmission resource is a time-domain resource and / or frequency-domain resource and / or code-domain resource of a random access preamble.

9. The communication method according to any one of claims 6 to 8, further comprising the step of transmitting a second information, the second information being used to determine an indication scheme for a second device type of a second terminal device, wherein the second device type of the second terminal device is different from the REDCAP UE.

10. A communication device, At least one processor, Coupled with the at least one processor, one or more memories that store programming instructions Equipped with, When the programming instruction is executed by the at least one processor, the communication device will be: Receiving first information, wherein the first information is carried in a system information block, and the first information is used to indicate the indication method of the device type of the terminal device, and the indication method of the device type of the terminal device includes indicating the device type of the terminal device via message 3 (Msg3), or indicating the device type of the terminal device via messages 1 (Msg1) and Msg3, The indication method is used to indicate the device type of the terminal device, wherein the device type of the terminal device includes a Redcap User Equipment (REDCAP UE). A communication device that enables the following action.

11. The device type of the terminal device is indicated by the correspondence between the transmission resource and the device type, or The communication device according to claim 10, wherein the device type of the terminal device is indicated by a bit or a field.

12. The communication device according to claim 11, wherein the transmission resource is a time-domain resource and / or frequency-domain resource and / or code-domain resource of a random access preamble.

13. When the programming instruction is executed by the at least one processor, the communication device: A communication device according to any one of claims 10 to 12, further comprising determining the indication method for the device type of the terminal device based on the first information from the network device.

14. When the programming instruction is executed by the at least one processor, the communication device: The communication device according to any one of claims 10 to 13, further comprising receiving a second piece of information, the second piece of information being used to determine an indication scheme for a second device type of a terminal device, the second device type of the terminal device being different from the REDCAP UE.

15. A communication device, At least one processor, Coupled with the at least one processor, one or more memories that store programming instructions Equipped with, When the programming instruction is executed by the at least one processor, the communication device will be: Transmitting first information, wherein the first information is carried in a system information block, and the first information is used to indicate the indication method of the device type of the terminal device, and the indication method of the device type of the terminal device includes indicating the device type of the terminal device via message 3 (Msg3), or indicating the device type of the terminal device via messages 1 (Msg1) and Msg3, The device type of the terminal device is determined based on the indication method, wherein the device type of the terminal device includes a Redcap User Equipment (REDCAP UE). A communication device that enables the following action.

16. The device type of the terminal device is indicated by the correspondence between the transmission resource and the device type, or The communication device according to claim 15, wherein the device type of the terminal device is indicated by a bit or a field.

17. The communication device according to claim 16, wherein the transmission resource is a time-domain resource and / or frequency-domain resource and / or code-domain resource of a random access preamble.

18. When the programming instruction is executed by the at least one processor, the communication device: The communication device according to any one of claims 15 to 17, further comprising transmitting a second piece of information, the second piece of information being used to determine an indication scheme for a second device type of a second terminal device, wherein the second device type of the second terminal device is different from the REDCAP UE.

19. A computer-readable storage medium that stores a computer program and enables the computer to perform the method according to any one of claims 1 to 5 when the computer program is executed on the computer.

20. A computer-readable storage medium that stores a computer program, and when the computer program is executed on the computer, enables the computer to perform the method according to any one of claims 6 to 9.

21. A computer program, which, when executed on a computer, causes the computer to perform the method according to any one of claims 1 to 5.

22. A computer program, which, when executed on a computer, causes the computer to perform the method according to any one of claims 6 to 9.

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