Communication method and device

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 communication methods and apparatuses.

Background Art

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

[0003] When the number of receiving antennas of the user equipment is small, the reception of the RAR is affected. A 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 configures the maximum number of repetitions of a control channel for obtaining radio resource control (RRC) signaling on the PDSCH and scheduling the RAR through blind detection, and determines a specific number of repetitions based on downlink control information (DCI) to achieve the effect of coverage expansion.

[0004] Terminal devices with different numbers of antennas or different reception capabilities need to receive coverage extension configuration information using a fixed blind detection method, which leads to a high complexity of blind detection and a reduction in the flexibility of network configuration. Therefore, there is an urgent need for a method that can improve the flexibility of network configuration and communication efficiency. Summary of the Invention Means for Solving the Problems

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

[0006] According to a first aspect, an embodiment of the present application provides a communication method, which includes the following.

[0007] In the random access procedure of NR communication, the terminal device sends a network access request to the network device, and the network device responds to the terminal device with the 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 the access status information of the terminal device or the first set of repetition counts of the first channel based on the first information, or may determine both the access status information and the first set of repetition counts. The first set of repetition counts has one or more repetition counts, and the first set of repetition counts may be the first repeated reception set or the first repeated transmission set.

[0009] Based on the indication of the determined access status information, the terminal device may determine whether the terminal device can access the network of the network device.

[0010] Based on the first information, the terminal device determines the first number of repetitions corresponding to the first channel based on a predefined determination method and a determined first set of repetition counts, and based on the first number of repetitions, the terminal device can receive or transmit on the first channel.

[0011] In an embodiment of the present application, the terminal device determines whether the terminal device can access the network based on the access status information sent by the network device, so as to avoid wasting 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 determining the first number of repetitions for transmitting the first channel based on the received set of repetition counts, which may reduce the complexity of blind detection by the terminal device.

[0012] Referring to the first aspect, in the first implementation form of the first aspect of the embodiment of the present application, the access status information is determined based on the bit status in the first information, and the bit status indicates 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.

[0013] The first characteristic information of the terminal device includes at least one of 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, mini-slots, symbols), the number of radio frequency channels, the number of hybrid automatic repeat request (HARQ) processes, the supported peak rate, application scenarios, delay requirements, processing capabilities, protocol versions, duplex modes (half-duplex, full-duplex), and services (IoT applications such as video surveillance and mobile broadband (MBB)), aggregation level information, candidate control channel information, terminal device type, the number of transmission antennas of the terminal device, the number of reception antennas of the terminal device, resources, resource indexes, levels, level indexes, extended levels, extended level indexes, repetition levels, repetition level indexes, number of repetitions, repetition count indexes, coverage extension values, coverage extension range indexes, path loss values, path loss range indexes, reference signal received power values, reference signal received power range indexes, reference signal received quality values, reference signal received quality range indexes, channel quality information values, channel quality information range indexes, service types, service type indexes, power saving requirements, power saving requirement indexes, delay requirements, delay requirement indexes, the pre-specified number of times to detect the first channel, the pre-specified number of times to detect the first channel index, mobility requirements, and mobility requirement indexes.

[0014] Referring to the first aspect, in the second implementation form of the first aspect of the embodiments of the present application, the first information includes repetition level information, and the repetition level information may indicate a set of the number of repetitions of the first channel.

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

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

[0017] Referring to the first aspect, in the fifth implementation form of the first aspect of the embodiments of the present application, the first information includes second feature information, and the second feature information is used to determine the first set of repetition counts, and the second feature information is related to the first number of repetitions.

[0018] Referring to the first aspect, in the sixth implementation form of the first aspect of the embodiments of the present application, when the first set of repetition counts indicates 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, and determine the first repetition count from the plurality of repetition counts based on the first indication information transmitted by the network device. When the first set of repetition counts indicates a plurality of repetition counts, the terminal device may directly determine the first repetition count based on the first indication information transmitted by the network device.

[0019] Referring to the sixth implementation form of the first aspect, in the seventh implementation form of the first aspect of the embodiments of the present application, the terminal device may further calculate the second repetition count of the second channel based on the determined first repetition count of the first channel and the first parameter transmitted by the network device. The first parameter may be a parameter obtained by being directly transmitted 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 repetition count of the PDSCH based on the repetition count of the PDCCH, or may determine the repetition count of the PDCCH based on the repetition count of the PDSCH.

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

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

[0023] Referring to the sixth implementation form or the seventh implementation form of the first aspect, in the eighth implementation form of the first aspect of the embodiments of the present application, after determining the first repetition count and receiving the first parameter, the terminal device may perform a linear operation, such as a multiplication calculation, on the first repetition count and the first parameter to obtain the second repetition count.

[0024] According to the second aspect, an 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 feature information of the terminal device based on the network access request of the terminal device, or obtain the first feature information of the terminal device in other ways, for example, through a network query.

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

[0027] After obtaining the first feature information, the network device determines whether the terminal device corresponding to the first feature 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 feature 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 feature information, determines the first set of repetition numbers of the first channel, and then may send the first set of repetition numbers 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 repetition numbers to the terminal device based on the first feature 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 form of the second aspect of the embodiments of the present application, the access status information is determined based on the bit status in the first information, and the bit status indicates 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.

[0030] Referring to the second aspect, in the second implementation form of the second aspect of the embodiments 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 repetition times, and the first maximum number of repetitions is determined based on the first characteristic information.

[0031] Referring to the second implementation form of the second aspect, in the third implementation form of the second aspect of the embodiments of the present application, the repetition level information includes a first value, and the first value indicates 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 repetitions R max or can be other values. For example,

[0033]

Number

[0034] and this is not particularly limited in this specification.

[0035] Referring to the second aspect, in the fourth implementation form of the second aspect of the embodiments of the present application, the first information includes second characteristic information, and the second characteristic information is used to determine the first set of repetition times, and the second characteristic information is related to the first number of repetitions.

[0036] Referring to the second aspect, in the fifth implementation form of the second aspect of the embodiment of the present application, when a terminal device accessing the first feature information is permitted, after a network device determines a first set of repetition counts of a first channel based on the first feature information, the network device may 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 to improve the accuracy of determining the first repetition count by the terminal device based on the first indication information based on the first feature information.

[0038] Referring to the fifth implementation form of the second aspect, in the sixth implementation form of the second aspect of the embodiment of the present application, the first information further includes a first parameter, and the first parameter is used to determine a second repetition count of a second channel with reference to the aforementioned first repetition count.

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

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

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

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

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

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

[0045] In this embodiment of the present application, the terminal device adjusts the first maximum number of repetitions or the first set of repetition numbers sent by the network device by using the adjustment coefficient, determines the first number of repetitions of the 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 form of the third aspect of the embodiments of the present application, the terminal device may receive the first maximum number of repetitions transmitted by the network device, adjust the first maximum number of repetitions based on an adjustment coefficient, and obtain the second maximum number of repetitions actually corresponding to the terminal device. The terminal device may perform table walking on the second maximum number of repetitions to obtain a plurality of numbers of repetitions, and then determine 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 radio resource control signaling RRC of upper layer signaling.

[0047] Referring to the third aspect, in the second implementation form of the third aspect of the embodiments of the present application, the terminal device may receive the first set of numbers of repetitions transmitted by the network device, adjust the first set of numbers of repetitions based on an adjustment coefficient, and obtain the second set of numbers of repetitions actually corresponding 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 numbers of repetitions may include the first set of numbers of repetitions.

[0049] Referring to the third aspect, or from the first implementation form to the second implementation form of the third aspect, in the third implementation form of the third aspect of the embodiments of the present application, the adjustment coefficient may be preconfigured by the network device by 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 based on the first characteristic information by the network device and transmitted to the terminal device.

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

[0051] In the random access procedure of 5G NR communication, the terminal device sends a network access request to the network device. The network device may obtain the first feature information of the terminal device based on the network access request of the terminal device or the resources of the network access request, or in other ways, for example, through network queries, the first feature information of the terminal device may be obtained.

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

[0053] After determining the first feature information, the network device may check the first repetition count corresponding to the first channel based on the first feature information according to a predefined rule.

[0054] The network device determines the second maximum repetition count or the second repetition count set corresponding to the terminal device based on the determined first repetition count, and then adjusts the second maximum repetition count or the second repetition count set based on a pre-configured adjustment coefficient to obtain the corresponding first maximum repetition count or the first repetition count set. The network device may send the first maximum repetition count or the first repetition count set to the terminal device based on the determined first maximum repetition count or the first repetition count set, and repeatedly send the first channel to the terminal device based on the first repetition count.

[0055] In this embodiment of the present application, the network device adjusts the maximum repetition count or the repetition count set sent to the terminal device by using the 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 form of the fourth aspect of the embodiments of the present application, the network device may pre-configure the adjustment coefficient for the terminal device by using upper layer signaling, or may indicate the adjustment coefficient for the terminal device by using physical layer information, or may set the adjustment coefficient by pre-defining a protocol, or may define the adjustment coefficient based on the first characteristic information when the first maximum number of repetitions or the first set of repetition numbers is transmitted.

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

[0058] The terminal device indicates the device type of the terminal device to the network device via Message 1 (Msg1), Message 3 (Msg3), Message A (MsgA), Message 5 (Msg5), or PUSCH that carry the terminal device capability information in the random access procedure. The terminal device may indicate the device type of the terminal device to the network device by using the correspondence between the transmission resource and the device type, or may indicate the device type of the terminal device to the network device by using specific bits or fields.

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

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

[0061] The network device indicates the device type of the terminal device reported by the terminal device by using a Physical Downlink Control Channel (PDCCH) that schedules a Physical Broadcast Channel (PBCH), a System Information Block (SIB), or a Physical Downlink Shared Channel (PDSCH) that carries SIB1. The system information block may be SIB1, and the network device may indicate to the terminal device that different device types of the terminal device correspond to different random access sequences, or may indicate to the terminal device to report first feature information for identifying the type of the terminal device. For the first feature information, refer to the related description regarding the first feature information in the implementation form of the first aspect.

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

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

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

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

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

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

[0069] According to a tenth aspect, an embodiment of the present application provides a communication device, which comprises a processing unit configured to determine first characteristic information of a terminal device, and Based on the first characteristic information, send the first maximum number of repetitions or the first set of repetition numbers to the terminal device, transmit the first channel based on the first number of repetitions, and the first number of repetitions is configured to be determined based on the first characteristic information. The first maximum number of repetitions or the first set of repetition numbers is determined based on the first number of repetitions and an adjustment coefficient, and includes a transmission unit.

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

[0071] According to the eleventh aspect, an embodiment of the present application provides a communication device. The communication device can 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 foregoing method. For example, the communication device includes a processing unit (sometimes also referred to as a processing module) and a transceiver unit (sometimes also referred to as a transceiver module). The processing unit is configured to receive indication information from the network device by using the transceiver unit and transmit device type indication information to the network device by using the transceiver module. In another example, the communication device is coupled to a memory and includes a processor configured to execute instructions in the memory to implement the method performed by the terminal device in the fifth aspect. Optionally, the communication device further includes other components, such as an antenna, an input / output module, and an interface. These components may be hardware, software, or a combination of software and hardware.

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

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

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

[0075] According to a thirteenth aspect, an 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 and executable on the processor. When the computer-executable instructions are executed by the processor, the processor performs the method in any one of the first aspect or an implementation form of the first aspect, or any one of the third aspect or an implementation form of the third aspect.

[0076] According to a 14th aspect, an embodiment of the present application provides a communication device. The communication device includes at least one processor, a memory system, an input / output (I / O) interface, and computer-executable instructions stored in the memory system and executable on the processor. When the computer-executable instructions are executed by the processor, the processor performs the method in any one of the 2nd aspect or an implementation form of the 2nd aspect, or any one of the 4th aspect or an implementation form of the 4th aspect.

[0077] According to a 15th aspect, an embodiment of the present application provides a computer-readable storage medium, and the computer-readable storage medium stores 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 1st aspect or an implementation form of the 1st aspect.

[0078] According to a 16th aspect, an embodiment of the present application provides a computer-readable storage medium, and the computer-readable storage medium stores 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 2nd aspect or an implementation form of the 2nd aspect.

[0079] According to a 17th aspect, an embodiment of the present application provides a computer-readable storage medium, and the computer-readable storage medium stores 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 3rd aspect or an implementation form of the 3rd aspect.

[0080] According to an 18th aspect, an embodiment of the present application provides a computer-readable storage medium, and the computer-readable storage medium stores 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 4th aspect or an implementation form of the 4th aspect.

[0081] According to the 19th aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program. When the computer program is executed on a computer, the computer is enabled to perform the method according to the 5th aspect.

[0082] According to the 20th aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program. When the computer program is executed on a computer, the computer is enabled to perform the method according to the 6th aspect.

[0083] According to the 21st aspect, an 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 any one of the 1st aspect or the implementation form of the 1st aspect.

[0084] According to the 22nd aspect, an 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 any one of the 2nd aspect or the implementation form of the 2nd aspect.

[0085] According to the 23rd aspect, an 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 any one of the 3rd aspect or the implementation form of the 3rd aspect.

[0086] According to the 24th aspect, an 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 any one of the 4th aspect or the implementation form of the 4th 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 5th 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 6th 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 any one of the 1st aspect or the implementation form of the 1st 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 any one of the 2nd aspect or the implementation form of the 2nd 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 any one of the 3rd aspect or the implementation form of the 3rd 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 any one of the 4th aspect or the implementation form of the 4th 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 5th 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 6th 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 aspect, the 9th aspect, or the 11th aspect, and a communication device provided in the 8th aspect, the 10th aspect, or the 12th aspect.

Brief Description of the Drawings

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

[0098] In the specification, claims, and accompanying drawings of the present application, terms such as "first", "second", etc. are intended to distinguish similar objects, but do not necessarily indicate a specific order or sequence. It should be understood that data named in this way is interchangeable in appropriate situations so that the embodiments of the present invention described in this specification can be implemented in an order other than the order exemplified or described in this specification. In addition, the expressions "including", "comprising", "having" and any other variant forms are intended to be directed to non-exclusive inclusion. For example, a process, method, system, product, or device including a list of steps or units is not necessarily limited to those explicitly listed steps or units, but may include other steps or units not explicitly listed or inherent in such a process, method, product, or device.

[0099] Hereinafter, the technical solution in the embodiments of the present application will be clearly described while referring to the accompanying drawings in the embodiments of the present application. In the description of the present application, " / " means "or" unless otherwise specified. For example, A / B may represent A or B. In the present application, "and / or" ("and / moreover", "as well as / or") only describes the corresponding relationship for explaining the associated objects 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 the present application, "at least one item" means one or more items, and "a plurality of items" means two or more items. "The following at least one item (s)" or similar expressions mean any combination of these items, including any combination of single items (s) or multiple items (s). 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, and a, b, and c may be in the singular or plural form.

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

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

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

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

[0104] Step 3: Based on the scheduling of the UL grant in the RAR, transmit the scheduled transmission signal. Step 3 is performed via Msg3, and Msg3 carries the identification information of the UE used for collision resolution.

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

[0106] Refer to the contention-free based random access architecture shown in FIG. 2. Contention-free based random access uses dedicated random access resources and preambles transmitted by the base station by using a 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. The dedicated random access resource can be indicated by a PRACH time-frequency resource index (Mask Index).

[0107] In step 2, the base station transmits a PDSCH carrying an RAR, and the RAR carries a TA corresponding to the transmission delay indicated in Msg1, a RAPID, a TC-RNTI, and a UL grant used to transmit Msg3. Since the number of receiving antennas of the terminal device decreases, the coverage is small, and the reception of the RAR and Msg4 in the initial access process is affected. Therefore, coverage recovery needs to be performed through reception, and one aspect is the coverage recovery of the RAR. The terminal device includes a reduced capability UE (REDCAP UE), and the number of antennas of 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, when the bandwidth and the number of transmission antennas of the REDCAP UE are reduced, the uplink coverage is also affected. For example, coverage recovery also needs to be performed for the transmission of the physical uplink shared channel (PUSCH). It should be noted that the coverage recovery and coverage expansion in this embodiment of the present application have the same meaning and can be exchanged as equivalents. Details will not be described again here.

[0108] In the LTE coverage expansion technology, the PDCCH and PDSCH are configured to be repeatedly transmitted multiple times in LTE, expand the coverage for transmitting the PDCCH and PDSCH by the base station, and improve the accuracy of reception normally performed by the UE.

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

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

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

[0112]

Table 1

[0113] In Example 1, when the RRC indicates that the maximum number of repetitions is 4, corresponding to the aforementioned table, r1 corresponds to the number of repetitions 1, r2 corresponds to the number of repetitions 2, and r3 corresponds to the number of repetitions 4. For example, when the network device indicates that a specific number of repetitions is r1 by using DCI, the number of times the PDCCH is repeatedly transmitted is 1. In Example 2, when the RRC indicates that the maximum number of repetitions is 16, corresponding to the aforementioned table, r1 corresponds to 2, r2 corresponds to 4, r3 corresponds to 8, and r4 corresponds to 16. The specific number of repetitions can be determined by the determined repetition number level indicated by the DCI.

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

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

[0116] The repetition number field of DCI format 6-1A indicates a specific PDSCH repetition level corresponding to a higher layer parameter in Table 2 (Table 2), and indicates a specific number of repetitions.

[0117]

Table 2

[0118] For example, when the maximum number of repetitions configured by RRC signaling is 16, the candidate set of repetition counts is {1, 4, 8, 16} obtained by querying the aforementioned table, and the network device indicates a specific number of repetitions by using DCI. The terminal device can determine a specific number of repetitions by referring to the pdsch-maxNumRepetitionCEmodeA parameter and the indication of DCI. For example, two bits in the DCI indicate the number of repetitions in {1, 4, 8, 16}, that is, the number of transmissions of the PDSCH, and Not configured indicates that the PDSCH is not configured.

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

[0120]

Table 3

[0121] The relationship between the different aggregation levels (AL) supported by the PDCCH and the 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 and represents the time - frequency resource set used to carry the PDCCH.

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

[0125] A REG bundle includes L consecutive REGs.

[0126] When blindly detecting the 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 resources within the CORESET. The UE detects all candidates through blind detection according to specific rules until the PDCCH is successfully decoded (the rules include detecting each aggregation level, having different candidates for corresponding different aggregation levels, and detecting different types of scrambling).

[0127] There can 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 is different. The first characteristic information of a terminal device includes at least one of the following: bandwidth (channel bandwidth), the number of supported or configured resource units (the resource unit may be an RB, RE, sub - carrier, RB group, REG bundle, control channel element, sub - frame, radio frame, slot, mini - slot, symbol), the number of radio frequency channels, the number of hybrid automatic repeat request (HARQ) processes, the supported peak rate, application scenario, delay requirement, processing capacity, protocol version, duplex mode (half - duplex, full - duplex), and services (IoT applications such as video surveillance and mobile broadband (MBB)), aggregation level information, candidate control channel information, terminal device type, the number of transmission antennas of the terminal device, the number of reception antennas of the terminal device, resource, resource index, level, level index, extended level, extended level index, repetition level, repetition level index, number of repetitions, number of repetitions index, coverage extension value, index of coverage extension range, path loss value, index of path loss range, reference signal received power value, index of reference signal received power range, reference signal received quality value, index of reference signal received quality range, channel quality information value, index of channel quality information range, service type, index of service type, power saving requirement, index of power saving requirement, delay requirement, index of delay requirement, 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 index of mobility requirement.

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

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

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

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

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

[0133] The number of radio frequency channels means, in particular, that the number of radio frequency channels of terminal device type 1 is different from that of terminal device type 2. For example, the number of radio frequency channels of terminal device type 1 is 1, and the number of radio frequency channels of terminal device type 2 is 2.

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

[0135] The supported peak rate means, in particular, that the maximum peak rate of terminal device type 1 is different from that of terminal device type 2. For example, the maximum peak rate supported by terminal device type 1 is 100 Mbps, and the peak rate supported by terminal device type 2 is 200 Mbps.

[0136] The application scenario means, in particular, 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., and terminal device type 2 is applied to mobile communication, video Internet access, etc.

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

[0138] Processing capabilities mean, in particular, that terminal device type 1 and terminal device type 2 have different channels or data processing time series and processing speeds under different SCS conditions. 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 capabilities of terminal device type 1 are lower than those of terminal device type 2. For example, the scheduling delays for scheduling PDSCH or PUSCH by PDCCH are different.

[0139] Protocol release means, in particular, that terminal device type 1 and terminal device type 2 are terminal devices with 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] Dual mode (half-duplex and full-duplex). For example, terminal device type 1 operates in half-duplex mode, and terminal device type 2 operates in full-duplex mode.

[0141] Services (Internet applications for things 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 the actual scenario to which this embodiment is applied, refer to the transmission architecture between the base station and the UE shown in FIG. 3. The base station is an eNB or a gNB, and the UE includes a terminal device type 1, a terminal device type 2, and a normal terminal device. The base station receives random access requests from the terminal device type 1, the terminal device type 2, and the normal terminal device. The terminal device type 1, the terminal device type 2, and the normal terminal device access the network, receive data from, and transmit data to the base station.

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

[0144] In this application, a terminal device is a device having a wireless transceiver function, which may be a fixed device, a mobile device, a handheld device (e.g., a mobile phone), a wearable device, an in-vehicle device, or a wireless device (e.g., a communication module, a modem, or a chip system) incorporated in the aforementioned devices. The terminal device is configured to connect people, objects, machines, etc., and can be widely used in various scenarios, including, but not limited to, as examples, cellular communication, device-to-device (D2D) communication, vehicle to everything (V2X) communication, machine-to-machine / machine type communications (M2M / MTC), internet of things (IoT), virtual reality (VR), augmented reality (AR), industrial control, self-driving, remote medical, smart grid, smart furniture, smart office, smart wearable, smart transportation, smart city, unmanned aerial vehicle, and terminal devices in robots. The terminal device may sometimes be referred to as a user equipment (UE), a terminal, an access station, a UE station, a remote station, a wireless communication device, a user device, or the like. For ease of explanation, in this application, a UE is used as an example for the description of the 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 a wireless transceiver function and is configured to communicate with a terminal device. The access network device includes, but is not limited to, base stations (BTS, NodeB, eNodeB / eNB, gNodeB / gNB) in a communication system, transmission reception points (TRP), base stations developed from 3GPP (registered trademark) thereafter, access nodes, wireless relay nodes, wireless backhaul nodes, and the like in a Wi-Fi system. The base station may be a macro base station, a micro base station, a pico cell base station, a small cell, a relay station, or the like. A plurality of base stations may support the aforementioned network using the same access technology or may support the aforementioned network using different access technologies. The base station may include one or more co-located or non-co-located transmission reception points. The network device may alternatively be a wireless controller, a central unit (CU), and / or a distributed unit (DU) in a cloud radio access network (CRAN) scenario. The network device may alternatively be a server, a wearable device, an in-vehicle device, or the like. For example, the network device in V2X technology may be a road side unit (RSU). Hereinafter, an example where the access network device is a base station is used to provide an explanation. The plurality of network devices in a communication system may be of the same type of base station or may be of different types of base stations. The base station may communicate with a terminal device or may communicate with a terminal device via a relay station. The terminal device may communicate with a plurality of 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 charging.The names of devices implementing core network functions in systems with different access technologies may vary. This is not limited in this application. The 5G system is used as an example. Core network devices include an access and mobility management function (AMF), a session management function (SMF), a user plane function (UPF), or the like.

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

[0147] 1. The terminal device does not process the message transmitted by the network device by using an adjustment coefficient.

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

[0149] In an actual application, the terminal device may or may not determine the access status information. The details are described as follows.

[0150] 1. Determine the access status information.

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

[0152] 401: The terminal device sends an access request to the network device, and correspondingly, the network device receives the access request from the terminal device.

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

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

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

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

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

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

[0159] Case 4: The network device does not need to determine the first information based on the first feature information. The network device determines whether to permit the access of the terminal device to the network based on the current load situation. For example, when the network load is large, that is, when the number of terminal devices accessing the network is large, the REDCAP UE or the type of terminal device is not permitted to access the network. When the network load is small, that is, when the number of terminal devices accessing the network is small, the REDCAP UE or the type of terminal device is permitted to access the network.

[0160] In the foregoing Cases 1 to 4, when the network device determines, based on the first characteristic information, that the terminal device that transmits the access request is a REDCAP UE, if the network device does not support the terminal type, for example, if the network device can only support legacy UEs but does not support REDCAP UEs, it is determined that the terminal device is not permitted to access the network. If the terminal device is a legacy UE or the network device also supports REDCAP UEs, it is determined that the terminal device is permitted to access the network.

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

[0162] Correspondingly, the indication method (i.e., uplink indication method) by which the terminal device indicates the device type to the network device includes transmission via Msg1, transmission via Msg3, transmission via message A (MsgA), transmission via message 5 (Msg5), or transmission via PUSCH carrying UE capability information. The terminal device may indicate the device type by using the correspondence between the transmission resource and the device type, or may indicate the device type by using specific bits or fields. The terminal device may determine a specific indication method based on a message from the network device, or may determine a specific indication method according to a predefined rule. For example, the network device may indicate at least one Msg1 resource corresponding to at least one device type by using the MIB. After receiving the MIB, the terminal device may determine the corresponding Msg1 resource based on the MIB and the device type, and may send Msg1 to the network device based on the corresponding Msg1 resource. The network device identifies the corresponding device type based on the Msg1 resource. For other examples, the network device may indicate by using the PBCH that the terminal device uses one bit of the Msg3 message to report the device type. For still other examples, the standard predefines that the terminal device reports the device type by MsgA.

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

[0164] The network device may determine access status information based on the first characteristic information. That is, the network device first determines whether the terminal device can access the network based on the first characteristic information. When the terminal device cannot access the network, the network device may set a bit status indicating that the terminal device is not permitted to access the network. The bit status is the access status information determined by the network device, 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, and the network device supports only legacy UEs and does not support REDCAP UEs, 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 other terminal devices for which other different bit statuses correspond to other different first characteristic information and indicate 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. When the network device supports only legacy UEs and does not support REDCAP UEs, when the device type is terminal device type 1 or terminal device type 2, the bit status is set to 0. That is, the terminal device is not permitted to access the network. When the device type is a legacy UE, the bit status is set to 1, that is, the terminal device is permitted to access the network. This is not limited in this embodiment.

[0166] When the 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 need not be determined in step 402.

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

[0168] The first number of repetitions may be the number of times the network device transmits the first channel.

[0169] The repetition level information reflects the possible number of repetitions for the terminal device to receive the first channel.

[0170] The first maximum number of repetitions is used to define the selection range of the number of repetitions while referring to the repetition level information.

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

[0172] [Number]

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

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

[0175] [Number]

[0176] and may be. Then, the network device may configure first indication information (e.g., DCI) indicating the first repetition count among the four repetition counts. The repetition level information of terminal device type 2 may be set to a third value, for example, 2, which indicates that the first set of repetition counts corresponding to the terminal device of that device type includes two repetition counts. For example, the two repetition counts may be R max , and

[0177] [Number]

[0178] and may be. Then, the network device may configure first indication information (e.g., DCI) indicating the first repetition count among the two repetition counts.

[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 present application either includes only the access status information, or the first information includes the access status information and the repetition level information, and the information indicated by the repetition level information is empty. When the access status information indicates that the terminal device is permitted to access the network, the first information includes the access status information, the repetition level information, and the first maximum number of repetitions. In this case, the first information may be carried by a plurality of messages. For example, the access status information, the repetition level information, and the first maximum number of repetitions are carried separately.

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

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

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

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

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

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

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

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

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

[0189] After determining the first number of repetitions, the terminal device may receive a 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 carrying an RAR, or a PDCCH for scheduling a PDSCH carrying Msg4, or a PDCCH for scheduling another PDSCH carrying downlink data. When the first channel is a PDSCH, the terminal device receives a PDSCH carrying downlink data or another PDSCH based on the first number of repetitions. The PDSCH may be a PDSCH carrying an SIB, or a PDSCH carrying an RAR, or a PDSCH carrying Msg4. When the first channel is a PUSCH, the step performed in step 407 may alternatively be that the UE transmits a PUSCH based on the first number of repetitions. The PUSCH may be a PUSCH carrying Msg3, or another PUSCH carrying uplink data. This is not particularly limited in this specification.

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

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

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

[0193] In an actual application, the network device may not send access status information to the terminal device. The access status information may be well represented by other information in the first information, indicating the number of repetition sets. Alternatively, the network device does not need to limit the type of the terminal device, that is, different terminal devices can access the network. The network device may send the first information directly including the number of repetition sets to the terminal device. Details will be separately described below.

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

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

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

[0197] Refer to FIG. 5. Other procedures of the communication method in this embodiment include the following steps.

[0198] 501: The terminal device sends an access request to the network device, and correspondingly, the network device receives the access request from the terminal device.

[0199] Regarding step 501 in this embodiment, refer to step 401 in the embodiment shown in FIG. 4. For details, it 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 FIG. 4, and the same indication method for the terminal type is used. For details, it will not be described again here.

[0202] In this embodiment, whether the network device permits the terminal device to access the network does not necessarily need to be indicated by the access status information, but can be directly indicated by the repetition level information. For example, when the network device does not permit the 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 is reused to indicate that the network device does not permit the terminal device to access the network.

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

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

[0205] 503: The network device transmits the repetition level information to the terminal device, and correspondingly, the terminal device receives the repetition level information from the network device.

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

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

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

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

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

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

[0212] Regarding steps 505 to 507 in this embodiment, refer to the related description of steps 405 to 407 in the embodiment shown in FIG. 4. Details will not be described again here.

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

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

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

[0216] Refer to FIG. 6. Other procedures of the communication method in this embodiment include the following steps.

[0217] 601: The terminal device sends an access request to the network device, and correspondingly, the network device receives the access request from the terminal device.

[0218] Regarding step 601 in this embodiment, refer to the related description of step 401 in the embodiment shown in FIG. 4. Details will not be described again here.

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

[0220] After receiving an access request, the network device may determine second feature information corresponding to the terminal device. The second feature information is information used by the network device to indicate the device type of the terminal device to the terminal device. For information about the second feature information, refer to the specific parameters included in the first feature information.

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

[0222] In this embodiment, the first channel may be a PDCCH or another channel, such as a PDSCH or a PUSCH. This is not particularly limited in this specification. In this embodiment, the second feature information is used as an example. When the network device permits the 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 a 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 above values are merely examples and are not particularly limited in this specification.

[0223] For example, the second characteristic information may be aggregation level information. The aggregation level information indicates an aggregation level, the candidate control channel information indicates the number of candidate PDCCHs, the aggregation level includes {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 repetition count associated with aggregation level 16 is N, the repetition count associated with aggregation level 8 is 2N, the repetition count associated with aggregation level 4 is 4N, and so on. The association between the repetition count and the number of candidate PDCCHs includes the following. For example, in Table 5, the first column is the aggregation level, the second column is the number of candidate PDCCHs corresponding to different aggregation levels, and the number of candidate PDCCHs corresponding to aggregation levels 1, 2, 4, 8, and 16 includes (n0, n1, n2, n3, n4, n5, n6, n8), and n0, n1, n2, n3, n4, n5, n6, and n8 may correspond to the numbers 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, a specific association method may be set. For example, one aggregation level corresponds to one repetition count. For example, the repetition count corresponding to aggregation level 1 is m1, or the repetition count corresponding to aggregation level 2 is m2, and m1 and m2 are positive integers. Alternatively, different numbers of candidate PDCCHs may correspond to one repetition count. For example, a larger number of candidate PDCCHs indicates a smaller repetition count, the number of candidate PDCCHs n8 corresponds to the repetition count 1, and the number of candidate PDCCHs n1 corresponds to the repetition count 8. Specifically, the association relationship may be pre-configured on the network device and the terminal device, or configured in other ways.For example, the network device notifies the terminal device via an RRC message. This is not particularly limited in this specification. For example, the association relationship may be determined based on the first feature information or the second feature information.

[0224]

Table 5

[0225] 603: The network device transmits the second feature information to the terminal device, and correspondingly, the terminal device receives the second feature information from the network device.

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

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

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

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

[0230] Regarding step 605 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.

[0231] In this embodiment, the terminal device obtains the first number of repetitions of the first channel by collating the second characteristic information transmitted by the network device with the association relationship, and there is no need to blindly detect the PDCCH. This reduces the use of DCI, improves the network access processing speed, and reduces the overhead of DCI. At the same time, network resources can be saved and communication efficiency can be improved.

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

[0233] In this embodiment, the network device directly sends the repetition count set to the terminal device. Specifically, at the repetition count indicated by the repetition count set, the repetition count of the PDCCH can be associated with the repetition count of the PDSCH or the repetition count of the PUSCH.

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

[0235] Please refer to FIG. 7. Other procedures of the communication method in this embodiment include the following steps.

[0236] 701: The terminal device sends an access request to the network device. Correspondingly, the network device receives the access request from the terminal device.

[0237] Regarding step 701 in this embodiment, please refer to the relevant description of step 401 in the embodiment shown in FIG. 4. Details will not be described again here.

[0238] 702: The network device determines a first repetition count set and a second repetition count set.

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

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

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

[0242] 703: The network device sends the first set of repetition counts and the second set of repetition counts to the terminal device, and correspondingly, the terminal device receives the first set of repetition counts and the second set of repetition counts 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 includes multiple repetition counts, the terminal device may select one repetition count within 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 repetition count and the second repetition count.

[0245] When the first set of repetition counts indicates one 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 indicates multiple repetition counts, the terminal device directly determines the first repetition count based on the first indication information, and then may obtain the second repetition count by using a linear operation algorithm based on the first repetition count and the second set of repetition counts. Specifically, when the second set of repetition counts includes only one repetition count, the repetition count is the first parameter, and the second repetition count may be directly calculated based on the first repetition count. When the second set of repetition counts includes multiple repetition counts, the terminal device first indicates the first parameter in the second set of repetition counts by using 1-bit data in the first indication information, and then may obtain the second repetition count by linear calculation based on the first parameter and the first repetition count.

[0246] For example, when the second repetition count set includes 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 through an RRC message. In this case, the second repetition count of the PDSCH may be determined based on X and Y, and may be determined by addition, multiplication, or other linear operation relationships. For example, when 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, the second repetition count of the PDSCH may be 2×4 = 8. When the second repetition count set includes multiple repetition counts, 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 second repetition count set of the PDSCH is {1, 2, 4, 8}. The terminal device may first indicate the first parameter of the second repetition count set by using the DCI, and then multiply the first parameter by the first repetition count, or first multiply the first repetition count by the second repetition count to obtain a combined set from the second repetition count set. In this case, the actual repetition count set of the PDSCH may be {1, 2, 4, 8, 16}, and then the terminal device indicates the value within the actual repetition count set by using the DCI to obtain the second repetition count. Specifically, the first channel may be the PDCCH and the second channel may be the PDSCH, or the first channel may be the PDSCH and the second channel may be the PDCCH. This is not particularly limited in this specification.

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

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

[0249] In this embodiment, the terminal device receives the PDCCH based on the determined first repetition count and receives the PDSCH based on the second repetition count, or receives the PDSCH based on the first repetition count and receives the PDCCH based on the second repetition count.

[0250] In this embodiment, the network device indicates to the terminal device the repetition counts of the first channel and the second channel by using DCI. It is necessary to indicate only the repetition count of one channel, or the bit data required to indicate the second repetition count is small, so that network resources can be saved and communication efficiency can be improved.

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

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

[0253] Refer to FIG. 8. Other procedures of the communication method in this embodiment include the following steps.

[0254] 801: The terminal device sends an access request to the network device, and correspondingly, the network device receives the access request from the terminal device.

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

[0256] 803: The network device sends the first set of repetition counts and the second set of repetition counts to the terminal device, and correspondingly, the terminal device receives the first set of repetition counts and the second set of repetition counts coming from the network device.

[0257] For steps 801 to 803 in this embodiment, refer to the related description of steps 701 to 703 in the embodiment shown in FIG. 7. Details will not be described again here.

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

[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 a PDCCH and the second channel may be a PUSCH, or the first channel may be a PUSCH and the second channel may be a PDCCH. This is not particularly limited in this specification.

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

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

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

[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 the bit data required to indicate the second repetition count is small, so network resources can be saved and communication efficiency can be improved.

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

[0266] Refer to FIG. 9. Other procedures of the communication method in this embodiment include the following steps.

[0267] 901: The terminal device sends an access request to the network device, and correspondingly, the network device receives the access request from the terminal device.

[0268] For step 901 in this embodiment, refer to the related description of step 401 in the embodiment shown in FIG. 4. Details will not be described again here.

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

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

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

[0272] After determining the first repetition count, the network device can determine a second maximum repetition count or a second set of repetition counts corresponding to the terminal device based on the first repetition count. Optionally, the network device can alternatively determine a first maximum repetition count or a first set of repetition counts based on second characteristic information.

[0273] 903: The network device transmits the first repetition count and the first set of repetition counts to the terminal device, and correspondingly, the terminal device receives the first maximum repetition count or the first set of repetition counts coming from the network device.

[0274] The first maximum repetition count or the second set of repetition counts can 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 repetition count based on an adjustment factor.

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

[0277] In other examples, after receiving the first set of repetition counts transmitted by the network device, the terminal device may adjust the first set of repetition counts based on the adjustment factor to obtain a second set of repetition counts that actually corresponds to the terminal device. The terminal device may determine the first number of repetitions 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 the first set of repetition numbers of a legacy UE included in an RRC message transmitted by a network device is used as an example. The adjustment coefficient of terminal device type 1 may be configured to 4, the adjustment coefficient of terminal device type 2 may be configured to 2, and the adjustment coefficient of a legacy UE is 1 or not set. The terminal device may apply the adjustment coefficient of each terminal type to the first maximum number of repetitions of the legacy UE. For example, when the first maximum number of repetitions is 8, the maximum number of repetitions of terminal device type 1 is 32, the maximum number of repetitions of terminal device type 2 is 16, and the maximum number of repetitions of the legacy UE is 8. After obtaining the maximum number of repetitions, the terminal device may obtain a set of repetition numbers through table walking and then indicate the first repetition number based on the first indication information, such as DCI. Also, the adjustment coefficient may be applied to the first set of repetition numbers. The set of repetition numbers of the legacy UE is {1, 2, 4, 8}, the set of repetition numbers of terminal device type 2 is {2, 4, 8, 16}, and the set of repetition numbers of terminal device type 1 is {4, 8, 16, 32}. In this example, the adjustment coefficient of terminal device type 1 or terminal device type 2 may also be 1. When the adjustment coefficient is not indicated or not configured, the adjustment coefficient is 1 by default.

[0279] The adjustment coefficient is configured by the network device for the terminal device by using upper layer signaling or physical layer signaling. The upper layer signaling may include RRC messages or MAC CE, and the physical layer signaling is the first indication information such as DCI, or the aforementioned adjustment coefficient is predefined by the network device, or the adjustment coefficient is associated with the first characteristic information. For example, the adjustment coefficient can be indicated by using DCI. For example, 1 or 2 bits in the DCI indicate the value of the adjustment coefficient in the adjustment coefficient set, and the adjustment coefficient set can be configured by using RRC signaling. Alternatively, the adjustment coefficient is the value in the repetition count set of the legacy UE, the value in the repetition count set of the terminal device type 1, or the value in the repetition count set of the terminal device type 2. For example, the adjustment coefficient can be indicated by using RRC. For example, the RRC signaling constitutes the value in the adjustment coefficient set, and the adjustment coefficient set can be predefined, or the RRC signaling constitutes the value in the repetition count set of the legacy UE as the adjustment coefficient. Alternatively, the RRC signaling constitutes the value in the repetition count set of the terminal device type 1 as the adjustment coefficient, or the RRC signaling constitutes the value in the repetition count set of the terminal device type 2 as the adjustment coefficient. For example, the adjustment coefficient is determined based on the first characteristic information. If the first characteristic information of the terminal device type 1 is different from that of the terminal device type 2, different adjustment coefficients are defined. For example, the adjustment coefficient of a terminal device with one receiving antenna is larger than that of a terminal device with two receiving antennas, and the adjustment coefficient of a terminal device with strong receiving ability is smaller than that of a terminal device with weak receiving ability. That is, the repetition count of a terminal device with strong receiving ability is less than that of a terminal device with weak receiving ability.

[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, and the bit status indicates 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 configured to determine a first number of repetitions based on a first maximum number of repetitions and a first set of repetition numbers, the first maximum number of repetitions being configured by using a radio resource control message.

[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 characteristic information, the second characteristic information being used to determine the first set of repetition numbers and being related to the first number of repetitions.

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

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

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

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

[0293] In this embodiment, the communication device can perform the operations performed by the terminal device in the embodiments shown in FIGS. 4 to 8. Details are not described again here.

[0294] Hereinafter, a communication device according to an embodiment of the present application will be described. Refer to FIG. 11. In the embodiment of the present application, the other structure of the communication device 1100 is a processing unit 1101 configured to determine first characteristic information of the terminal device, and a transceiver unit 1102 configured to transmit first information to the terminal device based on the first characteristic information, transmit a first channel based on the first number of repetitions, the first information indicating access status information and / or a first set of numbers of repetitions of the first channel, the first set of numbers of repetitions including at least one number of repetitions, and the first number of repetitions being determined based on the first characteristic information.

[0295] In this embodiment, the access status information is determined based on a bit status in the first information, the bit status indicating that the terminal device is not 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 indicating the first set of numbers of repetitions, and the first maximum number of repetitions being determined based on the first characteristic information.

[0297] In this embodiment, the repetition level information includes a first value, and the first value indicates 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 characteristic information, and the second characteristic information is used to determine a first set of repetition numbers and is related to the first number of repetitions.

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

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

[0301] In this embodiment, the communication device can perform operations performed by the network device in the embodiments shown in FIGS. 4 to 8. Details are not described again here.

[0302] Refer to FIG. 12. In one embodiment of the present application, other structures of the terminal device 1200 are A transceiver unit 1201 configured to receive a first maximum number of repetitions or a first set of repetition numbers from a network device, the first set of repetition numbers including at least one repetition number, and to transmit a first channel based on the first repetition number; A processing unit 1202 configured to determine a first repetition number of the first channel based on the first maximum number of repetitions or the first set of repetition numbers and an adjustment coefficient.

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

[0304] In this embodiment, the processing unit 1202 is configured to determine a second set of repetition numbers based on the first set of repetition numbers and the adjustment coefficient, and is particularly configured to determine the first repetition number based on the second set of repetition numbers and first indication information, where the first indication information is information from the network device.

[0305] In this embodiment, the adjustment coefficient is preconfigured by the network device by using upper layer signaling, or the adjustment coefficient is 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 first characteristic information.

[0306] In this embodiment, the communication device can perform the operations performed by the terminal device in the embodiment shown in FIG. 9. Details will not be described again here.

[0307] Refer to FIG. 13. In one embodiment of the present application, other structures of the communication device 1300 include a processing unit 1301 configured to determine the device type of the terminal device, and a transmission unit 1302 configured to transmit a first maximum number of repetitions or a first set of repetition numbers to the terminal device based on the device type, transmit a first channel based on the first number of repetitions, and the first number of repetitions is determined based on first characteristic information, and the first maximum number of repetitions or the first set of repetition numbers is determined based on the first number of repetitions and an adjustment coefficient.

[0308] In this embodiment, the transmission unit 1302 is further configured to pre-configure the adjustment coefficient by using upper layer signaling, or pre-define the adjustment coefficient, or indicate the adjustment coefficient by using physical layer signaling, or determine the adjustment coefficient based on the first characteristic information.

[0309] In this embodiment, the communication device can perform the operations performed by the network device in the embodiment shown in FIG. 9. Details will not be described again here.

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

[0311] FIG. 14 is a schematic diagram of the structure of a communication device according to an embodiment of the present application. The communication device 1400 may be the terminal device in FIGS. 4 to 9 and is configured to implement the method corresponding to the terminal device in the foregoing method embodiments. Alternatively, the communication device may be the network device in FIGS. 4 to 9 and is configured to implement the method corresponding to the network device in the foregoing method embodiments. For specific functions, reference may be made to the descriptions in the foregoing method embodiments.

[0312] The communication device 1400 includes one or more processors 1401. The processor 1401 may also be referred to as a processing unit and may be configured to implement specific control functions. The processor 1401 may be a general-purpose processor, a dedicated processor, or the like. 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, a memory, and / or a neural network processing unit. The baseband processor may be mainly configured 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 integrated in, for example, one or more application-specific integrated circuits.

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

[0314] Optionally, communication device 1401 includes an instruction 1403 (which may sometimes be referred to as a code or program), and the instruction 1403 may be executed on a processor, whereby communication device 1400 performs the methods described in the foregoing embodiments. Optionally, processor 1401 may store data.

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

[0316] Optionally, communication device 1400 may further include one or more components such as a wireless communication module, an audio module, an external memory interface, an internal memory, a universal serial bus (USB) interface, a power management module, an antenna, a speaker, a microphone, an input / output module, a sensor module, a motor, a camera, or a display. It can be understood that in some embodiments, UE1400 may include more or fewer components, or some components may be integrated, or some components may be divided. These components may be hardware, software, or a combination of software and hardware.

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

[0318] The transceiver unit 1001 within the communication device 1000 is equivalent to the transceiver 1405 within the communication device 1400. The processing unit 1002 within the communication device 1000 may be equivalent to the processor 1401 within the communication device 1400.

[0319] The transceiver unit 1102 within the communication device 1100 is equivalent to the transceiver 1405 within the communication device 1400. The processing unit 1101 within the communication device 1100 may be equivalent to the processor 1401 within the communication device 1400.

[0320] The transceiver unit 1201 within the communication device 1200 is equivalent to the transceiver 1405 within the communication device 1400. The processing unit 1202 within the communication device 1200 may be equivalent to the processor 1401 within the communication device 1400.

[0321] The transmission unit 1302 within the communication device 1300 is equivalent to the transceiver 1405 within the communication device 1400. The processing unit 1301 within the communication device 1300 may be equivalent to the processor 1401 within the communication device 1400.

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

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

[0324] The communication device 1500 is applicable to the method embodiments shown in FIGS. 4 to 9. For ease of explanation, FIG. 15 shows only the main components of the communication device 1500. As shown in FIG. 15, the communication device 1500 includes a processor, a memory, a control circuit, an antenna, and an input / output device. The processor is mainly configured to process communication protocols and communication data, control the communication device 1500, execute software programs, and process data of 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. Input / output devices such as a touch screen, a display, a microphone, or a keyboard are mainly configured to receive data input by a user and output the data to the user.

[0325] The communication device 1500 is used as an example to be 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 the form of an electromagnetic wave through the antenna. When data is transmitted to the communication device 1500, the control circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal into data and processes the data.

[0326] A person skilled in the art can understand that, for the sake of simplicity of description, FIG. 15 shows only one memory and one processor. In some embodiments, the communication device 1500 may include a plurality of processors and memories. The memory may also be referred to as a storage medium, a storage device, or the like. This is not limited to this embodiment of the present invention.

[0327] In an optional implementation form, the processor may include a baseband processor and a central processing unit. The baseband processor is mainly configured to process communication protocols and communication data, and the central processing unit is mainly configured to control the entire communication device 1500, execute software programs, and process the data of the software programs. The functions of the baseband processor and the central processing unit are integrated into the processor shown in FIG. 15. Those skilled in the art can understand that the baseband processor and the central processing unit may be independent processors and may be interconnected by using technologies such as buses. The communication device 1500 may be provided with a plurality of baseband processors so as to adapt to different network standards. The communication device 1500 may also include a plurality of central processing units to enhance the processing capacity of the communication device 1500. The components of the communication device 1500 may be connected through various buses. The baseband processor may also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit may alternatively be expressed as a central processing circuit or a central processing chip. The function of processing communication protocols and communication data may be built into the processor or stored in the storage unit in the form of a software program, and the processor executes the software program to implement the baseband processing function.

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

[0329] The transceiver unit 1001 in the communication device 1000 is equivalent to the transceiver unit 1510 in the communication device 1500. The processing unit 1002 in the communication device 1000 may be equivalent to the processing unit 1520 in the communication device 1500.

[0330] The transceiver unit 1201 in the communication device 1200 is equivalent to the transceiver unit 1510 in the communication device 1500. The processing unit 1202 in the communication device 1200 may be equivalent to the processing unit 1520 in the communication device 1500.

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

[0332] One embodiment of the present application further provides a communication device. The communication device can be used in the foregoing embodiments. The communication device includes means, units, and / or circuits used to implement the functions of the network device in the embodiments shown in FIGS. 4 to 9. For example, the communication device includes a transceiver unit configured to support the network device when implementing the transceiver function, and a processing unit configured to support the network device when processing signals. It can be understood that the first network device and the second network device relate to one or several UEs, and for several other UEs, the functions of the first network device and the second network device can be interchangeable.

[0333] FIG. 16 is a schematic diagram of the structure of a communication device according to an embodiment of the present application. As shown in FIG. 16, the communication device 1600 is applicable to the functions of the network device in the method embodiments shown in FIGS. 4 to 9. The communication device includes a baseband device 1601, a radio frequency device 1602, and an antenna 1603. In the uplink direction, the radio frequency device 1602 receives the 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 the information related to the terminal device and transmits it to the radio frequency device 1602. The radio frequency device 1602 processes the information related to the terminal device and then transmits the processed information to the terminal device through the antenna 1601.

[0334] The baseband device 1601 includes one or more processing units 16011, a memory unit 16012, and an interface 16013. The processing unit 16011 is configured to support a communication device when performing the functions of the network device in the foregoing method embodiments. The memory unit 16012 is configured to store software programs and / or data. The interface 16013 is configured to exchange information with the radio frequency device 1602. The interface includes an interface circuit configured to input and output information. In one implementation, the processing unit is an integrated circuit, 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 memory unit 16012 and the processing unit 16011 can be arranged in the same chip, that is, an on-chip memory element. Alternatively, the memory unit 16012 and the processing unit 16011 may be in a different chip from the processing element 16011, that is, an off-chip memory element. The memory unit 16012 can be one memory or a collective name for a plurality of memories or memory elements.

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

[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 can be equivalent to the processing unit 16011 in the communication device 1600.

[0337] The transmission 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 the present embodiment of the present application may correspond to the network device in the foregoing method embodiment. The interface 16013, the processing unit 16011, and the like in the communication device 1600 may implement the functions implemented by the network device in the foregoing method embodiment and / or various steps and methods. For the sake of brevity, the details will not be described again here.

[0339] A person skilled in the art may notice that, by combining with the examples described in the embodiments disclosed in this specification, the units and methods may be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software is determined by the design constraints of specific applications and technical solutions. A person skilled in the art may use different methods to implement the functions described for each specific application, but the implementation forms should not be considered to exceed the scope of this application.

[0340] In some embodiments provided in the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the described device embodiments are merely examples. For example, the unit division is merely a logical function division, and the units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units. That is, this may be arranged in one place or dispersed on a plurality of network units. A part or all of the units may be selected based on what is actually necessary to achieve the purpose of the solution method of the embodiment.

[0341] When the function is implemented in the form of a software functional unit and sold or used as an independent product, the function can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of this application can be implemented in the form of a software product. The computer software product is stored in a storage medium and includes a plurality of instructions for instructing a computer device (which may be a personal computer, a server, or a network device) to perform all or some of the steps of the method described in the embodiments. The aforementioned computer-readable storage medium can be any available medium accessible by a computer. For example, but not limited to, the computer-readable medium can include random access memory (RAM), read-only memory (ROM), and programmable read-only memory (PROM), erasable PROM (EPROM), electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM), universal serial bus flash disk, removable hard disk, or other optical disk storage devices, disk storage media, or other magnetic storage devices, or can carry or store the desired program code in the form of instructions or data structures and can be used by computer access to other arbitrary media.In addition, through exemplary but non-limiting descriptions, many forms of RAM can be used, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchlink DRAM (SLDRAM), or direct rambus dynamic random access memory (DR RAM).

[0342] The foregoing description is merely a specific implementation form of this application and is not intended to limit the protection scope of the embodiments of this application. Modifications or alternative forms that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the embodiments of this application shall be within the protection scope of the embodiments of this application. Therefore, the protection scope of the embodiments of this application shall follow the protection scope of the claims.

Description of Reference Numerals

[0343] 1000 Communication device 1001 Transceiver unit 1002 Processing unit 1100 Communication device 1101 Processing unit 1102 Transceiver unit 1200 Terminal device 1201 Transceiver unit 1202 Processing unit 1300 Communication device 1301 Processing unit 1302 Transmission unit 1400 Communication device 1401 Processor 1402 Memory 1403 Command 1404 Command 1405 Transceiver 1406 Antenna 1500 Communication device 1510 Transceiver unit 1520 Processing unit 1600 Communication device 1601 Baseband device 1602 Radio frequency device 1603 Antenna 16011 Processing unit 16012 Memory unit 16013 Interface

Claims

1. Receiving first information from a network device; Determining access status information and / or a first set of repetition counts for a first channel based on the first information, wherein the first set of repetition counts includes at least one repetition count; Determining whether the network is accessed based on the access status information, and / or Determining a first repetition count for the first channel based on the first set of repetition counts, and transmitting the first channel based on the first repetition count. A communication method comprising the steps.

2. The 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 is related to first characteristic information of the terminal device. The communication method according to claim 1.

3. The first information includes repetition level information, and the step of determining a first set of repetition counts for a first channel based on the first information includes: Determining the first set of repetition counts based on the repetition level information. The communication method according to claim 1.

4. The step of determining a first repetition count for the first channel based on the first set of repetition counts includes: Determining the first repetition count based on a first maximum repetition count and the first set of repetition counts, wherein the first maximum repetition count is configured by using a radio resource control message. The communication method according to any one of claims 1 to 3.

5. The repetition level information includes a first value, and the first value indicates that the first repetition count is 1 or the first repetition count is a first predefined value. The communication method according to claim 3.

6. The first information includes second characteristic information, the second characteristic information is used to determine the first set of repetition counts, and the second characteristic information is related to the first repetition count. The communication method according to claim 1.

7. The step of determining a first repetition count for the first channel based on the first set of repetition counts includes: A step of determining the first number of repetitions based on the first indication information and the first set of the number of repetitions, wherein the first indication information is information from the network device, the step is included in the communication method according to claim 1.

8. A step of determining the second number of repetitions of a second channel based on the first number of repetitions and a first parameter, wherein the first parameter is configured by the network device, the step is further included, wherein the first channel is a physical downlink control channel, and the second channel is a physical downlink shared channel, or wherein the first channel is a physical downlink shared channel, and the second channel is a physical downlink control channel, or wherein the first channel is a physical downlink control channel, and the second channel is a physical uplink shared channel, or wherein the first channel is a physical uplink shared channel, and the second channel is a physical downlink control channel, the communication method according to claim 7.

9. The step of determining the second number of repetitions of a second channel based on the first number of repetitions and a first parameter is a step of performing a linear operation on the first number of repetitions and the first parameter to obtain the second number of repetitions, the communication method according to claim 8.

10. A step of determining first characteristic information of a terminal device; and a step of transmitting first information to the terminal device based on the first characteristic information and transmitting a first channel based on the first number of repetitions, wherein the first information indicates access status information and / or a first set of the number of repetitions of the first channel, the first set of the number of repetitions includes at least one number of repetitions, and the first number of repetitions is determined based on the first characteristic information, the step is included in the communication method.

11. The 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 is related to the first characteristic information of the terminal device, the communication method according to claim 10.

12. The first information includes repetition level information and a first maximum number of repetitions. The repetition level information indicates the first set of repetition times, and the first maximum number of repetitions is determined based on the first characteristic information. The communication method according to claim 10.

13. The repetition level information includes a first value, and the first value indicates that the first number of repetitions is 1 or that the first number of repetitions is a first predefined value. The communication method according to claim 12.

14. The first information includes second characteristic information. The second characteristic information is used to determine the first set of repetition times, and the second characteristic information is related to the first number of repetitions. The communication method according to claim 10.

15. The method further includes a step of determining first indication information based on the first characteristic information, where the first indication information is used to determine the first number of repetitions. The communication method according to claim 10.

16. The first information further includes a first parameter, and the first parameter is used to determine a second number of repetitions of a second channel. The first channel is a physical downlink control channel, and the second channel is a physical downlink shared channel, or The first channel is a physical downlink shared channel, and the second channel is a physical downlink control channel, or The first channel is a physical downlink control channel, and the second channel is a physical uplink shared channel, or The first channel is a physical uplink shared channel, and the second channel is a physical downlink control channel. The communication method according to claim 15.

17. Receiving, from a network device, a first maximum number of repetitions or a first set of repetition times, where the first set of repetition times includes at least one number of repetitions, Determining a first number of repetitions of a first channel based on the first maximum number of repetitions or the first set of repetition times and an adjustment coefficient, and Transmitting the first channel based on the first number of repetitions. A communication method.

18. The step of determining the first number of repetitions of the first channel based on the first maximum number of repetitions and the adjustment coefficient comprises: determining a second maximum number of repetitions based on the first maximum number of repetitions and the adjustment coefficient; determining the first number of repetitions based on the second maximum number of repetitions and first indication information, wherein the first indication information is information from the network device, according to claim 17 of the communication method.

19. The step of determining the first number of repetitions of the first channel based on the first set of numbers of repetitions and the adjustment coefficient comprises: determining a second set of numbers of repetitions based on the first set of numbers of repetitions and the adjustment coefficient; determining the first number of repetitions based on the second set of numbers of repetitions and first indication information, wherein the first indication information is information from the network device, according to claim 17 of the communication method.

20. The adjustment coefficient is preconfigured by the network device by using upper layer signaling, or The adjustment coefficient is 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 first characteristic information, according to any one of claims 17 to 19 of the communication method.

21. determining first characteristic information of a terminal device; transmitting a first maximum number of repetitions or a first set of numbers of repetitions to the terminal device based on the first characteristic information, and transmitting a first channel based on the first number of repetitions, wherein the first number of repetitions is determined based on a device type, and the first maximum number of repetitions or the first set of numbers of repetitions is determined based on the first number of repetitions and the adjustment coefficient, according to the communication method.

22. preconfiguring the adjustment coefficient by using upper layer signaling, or predefining the adjustment coefficient, or indicating the adjustment coefficient by using physical layer signaling, or The communication method according to claim 21, further comprising the step of determining the adjustment coefficient based on the first characteristic information.

23. A transceiver unit configured to receive first information from a network device, determine a 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; A communication device comprising: a processing unit configured to determine access status information and / or the first set of repetition counts of the first channel based on the first information, the first set of repetition counts including at least one repetition count, and to determine whether to access the network based on the access status information.

24. The communication device according to claim 23, wherein the access status information is determined based on a bit status in the first information, the bit status indicating that the terminal device is not permitted to access the network, and the bit status is related to first characteristic information of the terminal device.

25. The first information includes repetition level information, and the processing unit is specifically configured to determine the first set of repetition counts based on the repetition level information.

26. The transceiver unit is specifically configured to determine the first number of repetitions based on a first maximum number of repetitions and the first set of repetition counts, the first maximum number of repetitions being configured by using a radio resource control message.

27. 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.

28. The first information includes second characteristic information, the second characteristic information being used to determine the first set of repetition counts, and the second characteristic information being related to the first number of repetitions.

29. The transceiver unit The communication device according to claim 23, wherein the first repetition count is determined based on the first indication information and the first repetition count set, and the first indication information is information from the network device.

30. The transceiver unit is further configured to determine a second repetition count of a second channel based on the first repetition count and a first parameter, the first parameter being configured by the network device. wherein the first channel is a physical downlink control channel, and the second channel is a physical downlink shared channel, or wherein the first channel is a physical downlink shared channel, and the second channel is a physical downlink control channel, or wherein the first channel is a physical downlink control channel, and the second channel is a physical uplink shared channel, or wherein the first channel is a physical uplink shared channel, and the second channel is a physical downlink control channel, the communication device according to claim 29.

31. The transceiver unit is further configured to perform a linear operation on the first repetition count and the first parameter to obtain the second repetition count, the communication device according to claim 30.

32. A communication device comprising: a processing unit configured to determine first characteristic information of a terminal device; and a transceiver unit configured to transmit first information to the terminal device based on the first characteristic information, and transmit a first channel based on a first repetition count, the first information indicating access status information and / or a first repetition count set of the first channel, the first repetition count set including at least one repetition count, and the first repetition count being determined based on the first characteristic information.

33. The communication device according to claim 32, wherein the access status information is determined based on a bit status in the first information, the bit status indicating that the terminal device is not permitted to access the network, and the bit status is related to the first characteristic information of the terminal device.

34. The first information includes repetition level information and a first maximum number of repetitions. The repetition level information indicates the first set of repetition counts, and the first maximum number of repetitions is determined based on the first characteristic information. The communication device according to claim 32.

35. The repetition level information includes a first value, and the first value indicates that the first number of repetitions is 1 or that the first number of repetitions is a first predefined value. The communication device according to claim 34.

36. The first information includes second characteristic information, and the second characteristic information is used to determine the first set of repetition counts. The second characteristic information is related to the first number of repetitions. The communication device according to claim 32.

37. The transceiver unit is further configured to determine first indication information based on the first characteristic information, and the first indication information is used to determine the first number of repetitions. The communication device according to claim 32.

38. The first information further includes a first parameter, and the first parameter is used to determine the second number of repetitions of a second channel. The first channel is a physical downlink control channel, and the second channel is a physical downlink shared channel or The first channel is a physical downlink shared channel, and the second channel is a physical downlink control channel or The first channel is a physical downlink control channel, and the second channel is a physical uplink shared channel or The first channel is a physical uplink shared channel, and the second channel is a physical downlink control channel. The communication device according to claim 37.

39. A transceiver unit configured to receive a first maximum number of repetitions or a first set of repetition counts from a network device, the first set of repetition counts including at least one repetition count, and to transmit a first channel based on the first number of repetitions, and A processing unit configured to determine the first number of repetitions of the first channel based on the first maximum number of repetitions or the first set of repetition counts and an adjustment coefficient. A communication device comprising the same.

40. The processing unit determines a second maximum number of repetitions based on the first maximum number of repetitions and the adjustment coefficient, determines the first number of repetitions based on the second maximum number of repetitions and first indication information, and the first indication information is information from the network device, and is specifically configured as such, the communication device according to claim 39.

41. The processing unit determines a second set of numbers of repetitions based on the first set of numbers of repetitions and the adjustment coefficient, determines the first number of repetitions based on the second set of numbers of repetitions and first indication information, and the first indication information is information from the network device, and is specifically configured as such, the communication device according to claim 39.

42. The adjustment coefficient is preconfigured by the network device by using upper layer signaling, or The adjustment coefficient is 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 first characteristic information, the communication device according to any one of claims 39 to 41.

43. A processing unit configured to determine first characteristic information of a terminal device, and a transmission unit configured to transmit a first maximum number of repetitions or a first set of numbers of repetitions to the terminal device based on the first characteristic information, transmit a first channel based on the first number of repetitions, the first number of repetitions being determined based on a device type, and the first maximum number of repetitions or the first set of numbers of repetitions being determined based on the first number of repetitions and an adjustment coefficient. A communication device comprising:

44. The transmission unit preconfigures the adjustment coefficient by using upper layer signaling, or predetermines the adjustment coefficient, or indicates the adjustment coefficient by using physical layer signaling, or is further configured to determine the adjustment coefficient based on the first characteristic information, the communication device according to claim 43.

45. A communication device comprising a processor and a memory, The processor is configured to execute instructions stored in the memory, whereby the communication device is enabled to perform the method according to any one of claims 1 to 9 and claims 17 to 20, communication device.

46. A communication device comprising a processor and a memory, wherein the processor is configured to execute instructions stored in the memory, whereby the communication device is enabled to perform the method according to any one of claims 10 to 16 and claim 21 or 22, communication device.

47. A computer-readable storage medium storing a computer program, wherein when the computer program is executed on a computer, the computer is enabled to perform the method according to any one of claims 1 to 22.

48. A computer program product, wherein when executed on a computer, the computer performs the method according to any one of claims 1 to 22.

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