Communication method and device

Abstract

The present application provides a communication method and apparatus, which includes adding a modulation and coding scheme with a modulation order of 10 for communication between a network device and a terminal device to improve communication efficiency of the terminal device in areas with better channel quality, including a central area.

Description

[Technical field]

[0001] TECHNICAL FIELD This application relates to the field of wireless communications, and in particular to communication methods and apparatus in wireless communication systems. [Background technology]

[0002] In a wireless communication system, a base station communicates with a terminal through a wireless link. The channel condition of the wireless link is affected by factors such as the distance between the base station and the terminal and / or the environment. For example, the channel condition may be different when the distance is different. In some cases, when the distance between the base station and the terminal is short and there are few obstacles between the terminal and the base station, the channel quality between the base station and the terminal is good, and when the distance between the base station and the terminal is long and there are more obstacles, the channel quality between the base station and the terminal is poor.

[0003] In order to satisfy the communication quality of different terminals in a network, the New Radio Interface (NR) system of the 5th Generation (5G) mobile communication system supports multiple Modulation Coding Schemes (MCS), and different MCSs correspond to different modulation orders and / or coding rates. At a certain coding rate, the higher the modulation order, the higher the spectral efficiency of the communication. Therefore, for terminals with better channel quality, the base station usually performs signal transmission using a modulation scheme with a higher modulation order to obtain a higher communication rate.

[0004] Currently, the maximum modulation order supported by the data channel in the NR system is 8. This limits the communication rate of terminals with good channel quality in the network center area. Summary of the Invention

[0005] The present invention provides a communication method and apparatus to improve communication efficiency.

[0006] According to a first aspect, the present application provides a communication method. The method may be executed by a terminal device, or may be executed by a chip applied to the terminal device. The following will be described by using an example in which the method is executed by the terminal device. The terminal device receives first indication information from a network device, and the first indication information indicates a first modulation and coding scheme. The terminal device determines a first modulation and coding scheme from a first modulation and coding scheme set according to the first modulation and coding scheme indicated by the indication information. The first modulation and coding scheme has a first modulation order and a first coding rate, and the first modulation and coding scheme set includes at least one modulation and coding scheme whose modulation order is 10.

[0007] In the above method, when the terminal device communicates with the network device, the first modulation and coding scheme set includes a modulation and coding scheme with a modulation order of 10. When the terminal device is located in a network central area or other areas with good channel quality, the modulation and coding scheme with a modulation order of 10 may be selected from the first modulation and coding scheme set for communication. The higher the modulation order, the more content can be carried with the same resources, that is, the higher the spectral efficiency of the communication, thereby improving the communication efficiency.

[0008] The modulation scheme corresponding to the modulation coding scheme whose modulation order is 10 is 1024QAM. Similarly, the modulation order corresponding to the modulation coding scheme whose modulation order is 1024QAM is 10.

[0009] In any method, the number of the at least one modulation and coding scheme having a modulation order of 10 included in the first modulation and coding scheme set is equal to or greater than one-quarter of the total number of modulation and coding schemes included in the first modulation and coding scheme set.

[0010] In any method, the first modulation and coding scheme set further includes at least one modulation and coding scheme having a modulation order of 8, and the number of the at least one modulation and coding scheme having a modulation order of 10 is greater than or equal to the number of the at least one modulation and coding scheme having a modulation order of 8.

[0011] In any method, the first modulation and coding scheme set further includes at least one modulation and coding scheme having a modulation order of 8, and a sum of the number of the at least one modulation and coding scheme having a modulation order of 10 and the number of the at least one modulation and coding scheme having a modulation order of 8 is equal to or greater than half of the total number of modulation and coding schemes included in the first modulation and coding scheme set.

[0012] In the above method, to ensure that the terminal device has multiple modulation and coding schemes with a modulation order of 10 for selection when the channel quality is good, it can be ensured that the number of modulation and coding schemes with higher modulation orders in the first modulation and coding scheme set is not too small.

[0013] In any method, for the first modulation and coding scheme set, the number of the at least one modulation and coding scheme having a modulation order of 10 is 8, 4, 3, or 6.

[0014] In any method, the number of the at least one modulation and coding scheme with a modulation order of 10 is four, and the coding rates corresponding to the four modulation and coding schemes with a modulation order of 10 are 806 / 1024, 853 / 1024, 900 / 1024, and 948 / 1024, respectively.

[0015] In any method, the number of the at least one modulation and coding scheme with a modulation order of 10 is three, and the coding rates corresponding to the three modulation and coding schemes with a modulation order of 10 are 806 / 1024, 876 / 1024, and 948 / 1024, respectively.

[0016] In any method, the number of the at least one modulation and coding scheme with a modulation order of 10 is eight, and the coding rates corresponding to the eight modulation and coding schemes with a modulation order of 10 are 782 / 1024, 806 / 1024, 829 / 1024, 853 / 1024, 877 / 1024, 900 / 1024, 924 / 1024, and 948 / 1024, respectively.

[0017] In any method, the number of the at least one modulation and coding scheme with a modulation order of 10 is six, and the coding rates corresponding to the six modulation and coding schemes with a modulation order of 10 are 790 / 1024, 822 / 1024, 853 / 1024, 885 / 1024, 916 / 1024, and 948 / 1024, respectively.

[0018] In the above method, the spectral intervals of the coding rates corresponding to the modulation and coding schemes with a modulation order of 10 in the first modulation and coding scheme set become more uniform, which improves the accuracy of the modulation and coding scheme selection by the network device.

[0019] In any manner, the first indication information is carried in downlink control information DCI, or the first indication information is carried in radio resource control RRC signaling, or the first indication information is carried in a media access control control element MAC CE.

[0020] In any method, after the terminal device determines a first modulation and coding scheme corresponding to the first indication information from the first modulation and coding scheme set, the terminal device processes a first signal received from the network device based on the first modulation and coding scheme, or the terminal device transmits a first signal to the network device based on the first modulation and coding scheme.

[0021] Accordingly, the network device processes a first signal received from the terminal device based on the first modulation and coding scheme, or the network device transmits a first signal to the terminal device based on the first modulation and coding scheme.

[0022] In any manner, the first indication information indicates the first modulation and coding scheme, and further indicates a resource of the physical downlink shared channel PDSCH or the physical uplink shared channel PUSCH.

[0023] The first signal in any of the above methods is a PUSCH or a PDSCH. Of course, the first signal may alternatively be another signal.

[0024] In any method, before the terminal device receives first indication information from the network device, the terminal device sends second indication information to the network device, where the second indication information indicates a first channel quality information (CQI) index, the first CQI index corresponds to a second modulation and coding scheme, the second modulation and coding scheme has a second modulation order and a second coding rate, the second modulation and coding scheme is one in a second modulation and coding scheme set, and the second modulation and coding scheme set includes at least one modulation and coding scheme with a modulation order of 10.

[0025] In the above method, when the terminal device transmits channel quality information to the network device, if the terminal device is located in an area with good channel condition, a modulation and coding scheme with a modulation order of 10 may be used. The higher the modulation order, the higher the coding rate, and the fewer redundant bits are added during communication, so that the communication efficiency is also higher.

[0026] In any method, the number of modulation and coding schemes having a modulation order of 10 included in the second modulation and coding scheme set is equal to the number of modulation and coding schemes having a modulation order of 10 included in the first modulation and coding scheme set.

[0027] In any method, the coding rate of the modulation and coding scheme with modulation order 10 included in the second modulation and coding scheme set is equal to the coding rate of the modulation and coding scheme with modulation order 10 included in the first modulation and coding scheme set.

[0028] According to a second aspect, the present application provides a communication method. The method may be executed by a network device, or may be executed by a chip applied to the network device. The following will be described by using an example in which the method is executed by the network device. The network device determines a first modulation and coding scheme index in a first modulation and coding scheme set, and sends the first modulation and coding scheme index to a terminal device. The first modulation and coding scheme index corresponds to a first modulation and coding scheme, the first modulation and coding scheme has a first modulation order and a first coding rate, and the first modulation and coding scheme set includes at least one modulation and coding scheme whose modulation order is 10.

[0029] In the above method, when the terminal device communicates with the network device, the first modulation and coding scheme set includes a modulation and coding scheme with a modulation order of 10. When the terminal device is located in a network central area or other area with good channel quality, the modulation and coding scheme with a modulation order of 10 may be selected from the first modulation and coding scheme set for communication, thereby improving communication efficiency.

[0030] For detailed descriptions of the first modulation and coding scheme, the first modulation and coding scheme set, the first indication information, and the modulation and coding scheme whose modulation order is 10 in the second aspect, please refer to the relevant descriptions in the first aspect. The details will not be described again here.

[0031] In any method, after the network device transmits the first modulation and coding scheme index to the terminal device, the network device processes the received first signal based on the first modulation and coding scheme, or after the network device transmits the first modulation and coding scheme index to the terminal device, the network device transmits the first signal based on the first modulation and coding scheme.

[0032] In any method, before the network device sends the first indication information to the terminal device, the network device receives second indication information from the terminal device, the second indication information indicating a first channel quality information (CQI) index, the first CQI index corresponding to a second modulation and coding scheme, the second modulation and coding scheme having a second modulation order and a second coding rate, the second modulation and coding scheme being one in a second modulation and coding scheme set, the second modulation and coding scheme set including at least one modulation and coding scheme with a modulation order of 10.

[0033] In the above method, when the terminal device transmits channel quality information to the network device, if the terminal device is located in an area with good channel conditions, a modulation and coding scheme with a modulation order of 10 may be used, thereby improving communication efficiency.

[0034] In any method, the number of modulation and coding schemes having a modulation order of 10 included in the second modulation and coding scheme set is equal to the number of modulation and coding schemes having a modulation order of 10 included in the first modulation and coding scheme set.

[0035] In any method, the coding rate of the modulation and coding scheme with modulation order 10 included in the second modulation and coding scheme set is equal to the coding rate of the modulation and coding scheme with modulation order 10 included in the first modulation and coding scheme set.

[0036] For the technical effects of the second aspect or corresponding implementations, please refer to the description of the technical effects of the first aspect or corresponding implementations.

[0037] According to a third aspect, the present application provides another communication method. The method may be executed by a terminal device, or may be executed by a chip applied to the terminal device. The following will be described by using an example in which the method is executed by the terminal device. The terminal device determines a first channel quality information CQI, and the terminal device sends second indication information to a network device. The second indication information indicates a first CQI index corresponding to the first CQI, the first CQI index corresponds to a second modulation and coding scheme, the second modulation and coding scheme has a second modulation order and a second coding rate, the second modulation and coding scheme is one in a second modulation and coding scheme set, and the second modulation and coding scheme set includes at least one modulation and coding scheme whose modulation order is 10.

[0038] In the above method, when the terminal device transmits channel quality information to the network device, if the terminal device is located in an area with good channel conditions, a modulation and coding scheme with a modulation order of 10 may be used, thereby improving communication efficiency.

[0039] In any method, 2 The number of modulation and coding schemes in the modulation and coding scheme set with at least one modulation and coding scheme having a modulation order of 10 is 2 This is at least one-quarter of the total number of modulation and coding schemes in the modulation and coding scheme set.

[0040] In any method, 2 The modulation and coding scheme set further includes at least one modulation and coding scheme having a modulation order of 8, and the number of the at least one modulation and coding scheme having a modulation order of 10 is greater than or equal to the number of the at least one modulation and coding scheme having a modulation order of 8.

[0041] In any method, 2 The modulation and coding scheme set further includes at least one modulation and coding scheme with a modulation order of 8, and the sum of the number of the at least one modulation and coding scheme with a modulation order of 10 and the number of the at least one modulation and coding scheme with a modulation order of 8 is equal to or greater than 10. 2This is equal to or greater than half of the total number of modulation and coding schemes contained in the modulation and coding scheme set.

[0042] In the above method, to ensure that the terminal device has multiple modulation and coding schemes with a modulation order of 10 for selection when the channel quality is good, it can be ensured that the number of modulation and coding schemes with higher modulation orders in the second modulation and coding scheme set is not too small.

[0043] In any method, 2 For the modulation and coding scheme set, the number of at least one modulation and coding scheme with a modulation order of 10 is four or two.

[0044] In any method, the number of the at least one modulation and coding scheme having a modulation order of 10 is four, and the coding rates corresponding to the four modulation and coding schemes having a modulation order of 10 are 806 / 1024, 853 / 1024, 900 / 1024, and 948 / 1024, respectively; or the coding rates corresponding to the four modulation and coding schemes having a modulation order of 10 are 790 / 1024, 822 / 1024, 885 / 1024, and 948 / 1024, respectively; or the number of the at least one modulation and coding scheme having a modulation order of 10 is two, and the coding rates corresponding to the two modulation and coding schemes having a modulation order of 10 are 853 / 1024 and 948 / 1024, respectively.

[0045] According to a fourth aspect, the present application provides a communication method. The method may be executed by a network device, or may be executed by a chip applied in the network device. The following will be described by using an example in which the method is executed by the network device. The network device receives a first channel quality information (CQI) index from a terminal device; network The device determines a second modulation and coding scheme from a second modulation and coding scheme set that corresponds to the first CQI index, the second modulation and coding scheme having a second modulation order and a second coding rate, and the second modulation and coding scheme set includes at least one modulation and coding scheme with a modulation order of 10.

[0046] For detailed descriptions of the second modulation and coding scheme, the second modulation and coding scheme set, the second indication information, and the modulation and coding scheme whose modulation order is 10 in the fourth aspect, please refer to the relevant descriptions in the third aspect. The details will not be described again here.

[0047] For the technical effects of the fourth aspect or corresponding implementations, please refer to the description of the technical effects of the third aspect or corresponding implementations.

[0048] According to a fifth aspect, a communication device is provided. The communication device comprises a function for performing the operations of the example method according to the first aspect. The functions may be implemented by hardware, or may be implemented by the hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions. In a possible design, the communication device includes a receiving unit and a processing unit. The receiving unit is configured to receive first indication information from a network device, the first indication information indicating a first modulation and coding scheme. The processing unit is configured to determine a first modulation and coding scheme corresponding to the first indication information from a first modulation and coding scheme set, the first modulation and coding scheme having a first modulation order and a first coding rate, and the first modulation and coding scheme set includes at least one modulation and coding scheme with a modulation order of 10.

[0049] For detailed descriptions of the first modulation and coding scheme, the first modulation and coding scheme set, the first indication information, and the modulation and coding scheme whose modulation order is 10 in the fifth aspect, please refer to the relevant descriptions in the first aspect. The details will not be described again here.

[0050] In any method, the communication device further includes a transmitting unit, and the transmitting unit transmits second indication information before the receiving unit receives the first indication information, the second indication information indicating a first channel quality information (CQI) index, the first CQI index corresponding to a second modulation and coding scheme, the second modulation and coding scheme having a second modulation order and a second coding rate, the second modulation and coding scheme being one in a second modulation and coding scheme set, the second modulation and coding scheme set including at least one modulation and coding scheme with a modulation order of 10.

[0051] In the above method, when the terminal device transmits channel quality information to the network device, if the terminal device is located in an area with good channel conditions, a modulation and coding scheme with a modulation order of 10 may be used, thereby improving communication efficiency.

[0052] In any method, the number of modulation and coding schemes having a modulation order of 10 included in the second modulation and coding scheme set is equal to the number of modulation and coding schemes having a modulation order of 10 included in the first modulation and coding scheme set.

[0053] The coding rate of the modulation and coding scheme with a modulation order of 10 included in the second modulation and coding scheme set is equal to the coding rate of the modulation and coding scheme with a modulation order of 10 included in the first modulation and coding scheme set.

[0054] For the technical effects of the fifth aspect or corresponding implementations, please refer to the description of the technical effects of the first aspect or corresponding implementations.

[0055] According to a sixth aspect, there is provided a communication device. 2The communication device may include a processing unit and a transmitting unit. The processing unit is configured to determine a first modulation and coding scheme index in a first modulation and coding scheme set. The transmitting unit is configured to transmit the first modulation and coding scheme index to a terminal device. The first modulation and coding scheme index corresponds to a first modulation and coding scheme, the first modulation and coding scheme having a first modulation order and a first coding rate, and the first modulation and coding scheme set includes at least one modulation and coding scheme with a modulation order of 10.

[0056] For detailed descriptions of the first modulation and coding scheme, the first modulation and coding scheme set, the first indication information, and the modulation and coding scheme whose modulation order is 10 in the sixth aspect, please refer to the relevant descriptions in the second aspect. The details will not be described again here.

[0057] In any method, the communication device further includes a receiving unit, where the receiving unit receives second indication information before the first indication information is sent, where the second indication information indicates a first channel quality information (CQI) index, the first CQI index corresponds to a second modulation and coding scheme, the second modulation and coding scheme has a second modulation order and a second coding rate, the second modulation and coding scheme is one in a second modulation and coding scheme set, and the second modulation and coding scheme set includes at least one modulation and coding scheme with a modulation order of 10.

[0058] In the above method, when the terminal device transmits channel quality information to the network device, if the terminal device is located in an area with good channel conditions, a modulation and coding scheme with a modulation order of 10 may be used, thereby improving communication efficiency.

[0059] In any method, the number of modulation and coding schemes having a modulation order of 10 included in the second modulation and coding scheme set is equal to the number of modulation and coding schemes having a modulation order of 10 included in the first modulation and coding scheme set.

[0060] The coding rate of the modulation and coding scheme with a modulation order of 10 included in the second modulation and coding scheme set is equal to the coding rate of the modulation and coding scheme with a modulation order of 10 included in the first modulation and coding scheme set.

[0061] For the technical effects of the sixth aspect or corresponding implementations, please refer to the description of the technical effects of the second aspect or corresponding implementations.

[0062] According to a seventh aspect, there is provided a communication device. 3 The communication device may include a communication unit and a transmitting unit. The communication unit may include a first channel quality indicator (CQI). The transmitting unit may include a second indication information to the network device. The second indication information indicates a first CQI index corresponding to the first CQI, the first CQI index corresponds to a second modulation and coding scheme, the second modulation and coding scheme having a second modulation order and a second coding rate, the second modulation and coding scheme being one of a second modulation and coding scheme set, and the second modulation and coding scheme set includes at least one modulation and coding scheme with a modulation order of 10.

[0063] For detailed descriptions of the second modulation and coding scheme, the second modulation and coding scheme set, the second indication information, and the modulation and coding scheme whose modulation order is 10 in the seventh aspect, please refer to the relevant descriptions in the third aspect. The details will not be described again here.

[0064] For the technical effects of the seventh aspect or corresponding implementations, please refer to the description of the technical effects of the third aspect or corresponding implementations.

[0065] According to an eighth aspect, there is provided a communication device. 4 The communication device may include a communication unit and a processing unit. The communication unit may include a first channel quality indicator (CQI) index from a terminal device. The processing unit may be configured to determine a second modulation and coding scheme corresponding to the first CQI index from a second modulation and coding scheme set. The second modulation and coding scheme has a second modulation order and a second coding rate, and the second modulation and coding scheme set includes at least one modulation and coding scheme with a modulation order of 10.

[0066] For detailed descriptions of the second modulation and coding scheme, the second modulation and coding scheme set, the second indication information, and the modulation and coding scheme whose modulation order is 10 in the eighth aspect, please refer to the relevant descriptions in the fourth aspect. The details will not be described again here.

[0067] For the technical effects of the eighth aspect or corresponding implementations, please refer to the description of the technical effects of the fourth aspect or corresponding implementations.

[0068] According to a ninth aspect, a communication device is provided. The communication device may be the terminal device of the above method embodiment, or may be a chip disposed in the terminal device. The communication device includes a processor and a memory. The memory is configured to store at least one computer program or instruction, and when the one or more computer programs are executed, the communication device can execute the method performed by the terminal device in the above method embodiment.

[0069] According to a tenth aspect, a communication device is provided. The communication device may be the network device of the above method embodiment, or may be a chip disposed in the network device. The communication device includes a processor and a memory. The memory is configured to store at least one computer program or instruction, and when the one or more computer programs are executed, the communication device can perform the method performed by the network device in the above method embodiment.

[0070] According to an eleventh aspect, a computer readable storage medium is provided, configured to store a computer program which, when executed, performs the method performed by the terminal device in the above aspect.

[0071] According to a twelfth aspect, a computer readable storage medium is provided, configured to store a computer program which, when executed, performs the method performed by the network device in the above aspect.

[0072] According to a thirteenth aspect, the present application provides a chip system. The chip system includes a processor configured to perform the functions of the terminal device in the method of the above aspect. In a possible design, the chip system further includes a memory configured to store program instructions and / or data. The chip system may include a chip, or may include a chip and other discrete components.

[0073] According to a fourteenth aspect, the present application provides a chip system. The chip system includes a processor configured to perform the functions of the network device in the method of the above aspect. In a possible design, the chip system further includes a memory configured to store program instructions and / or data. The chip system may include a chip, or may include a chip and other discrete components.

[0074] According to a fifteenth aspect, there is provided a communication system, the communication system including the network device and a terminal device according to any one of the above aspects. [Brief description of the drawings]

[0075] [Figure 1] FIG. 2 is a schematic diagram of a possible communication architecture according to an embodiment of the present application; [Diagram 2] 1 is a simplified flowchart of a communication method according to the present application. [Diagram 3] 4 is another schematic flow chart of a communication method according to the present application. [Figure 4] 4 is another schematic flow chart of a communication method according to the present application. [Diagram 5] FIG. 1 is a schematic diagram of the structure of a communication device according to the present application. [Figure 6] FIG. 2 is another schematic diagram of the structure of the communication device according to the present application. [Figure 7] FIG. 2 is yet another schematic diagram of the structure of a communication device according to the present application. [Figure 8] FIG. 2 is a schematic diagram of the structure of a terminal device according to the present application; [Figure 9] FIG. 2 is a schematic diagram of the structure of a network device according to the present application; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0076] The technical solutions of the embodiments of the present application may be applied to various communication systems, such as long term evolution (LTE) systems, 5th generation (5G) mobile communication systems, and future mobile communication systems.

[0077] FIG1 is a schematic diagram of a possible network architecture to which the embodiments of the present application are applied. The network architecture includes a terminal device 110 and an access network device 120. Optionally, the network architecture may further include a core network device 130. The terminal device 110 and the access network device 120 may communicate with each other through a Uu air interface. The Uu air interface may be understood as a universal UE to network interface. The transmission through the Uu air interface includes uplink transmission and downlink transmission.

[0078] In the LTE system, the access network device is an eNB, and the core network device is an MME. In the UMTS system, the access network device is an RNC, and the core network device is an SGSN. In other wireless communication systems, the corresponding access network device and the corresponding core network device are also included. In the following embodiments, both the access network device and the core network device are called network devices with respect to the terminal device.

[0079] Based on the above communication system, the present application provides a communication method. The following will explain and describe some terms used in the present application, and the terms will also be used as part of the present invention.

[0080] 1. Terminal Device

[0081] A terminal device may be simply called a terminal or may be called user equipment (UE), and is a device equipped with a wireless transceiver function. The terminal device may be located on the ground, including indoor or outdoor, or handheld or vehicle-mounted, or may be located on water (e.g., on a ship), or may be located in the air (e.g., on an airplane, a drone, a balloon, or a satellite). The terminal device may be a mobile phone, a vehicle, a tablet computer, a smart speaker, a detector, a gas station sensor, a computer equipped with a wireless transceiver function, a virtual reality terminal device, an augmented reality terminal device, a wireless terminal device in industrial control, a wireless terminal device in autonomous driving, a wireless terminal device in remote medical care, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, a wireless terminal device in a smart home, etc. The terminal device may be fixed or mobile. This is not limited in the embodiments of the present application.

[0082] In an embodiment of the present application, the apparatus configured to implement the function of the terminal may be a terminal device, or may be an apparatus that can help the terminal device implement the function, such as a chip system. The apparatus may be installed in the terminal device. In an embodiment of the present application, the chip system may include a chip, or may include a chip and other discrete components. The technical solution provided in the embodiment of the present application is described by using an example in which the apparatus configured to implement the function of the terminal device is a terminal device.

[0083] 2. Network Devices

[0084] The network device may be an access network device. The access network device may also be called a radio access network (RAN) device, which provides wireless communication functions to terminal devices. The access network device may include, but is not limited to, a next-generation NodeB (gNB), an evolved NodeB (eNB), a baseband unit (BBU), a transmitting and receiving unit (TRP), a transmitting point (TP) in 5G, a base station in a future mobile communication system, or an access point in a Wi-Fi system. Alternatively, the access network device may be a radio controller, a central unit (CU), and / or a distributed unit (DU) in a cloud radio access network (CRAN) scenario, or the network device may be a relay station, an in-vehicle device, a network device in a future evolved PLMN network, etc.

[0085] A terminal device may communicate with multiple access network devices of different technologies. For example, a terminal device may communicate with an access network device that supports long term evolution (LTE), may communicate with an access network device that supports 5G, or may communicate with both an access network device that supports LTE and an access network device that supports 5G. This is not limited in the embodiments of the present application.

[0086] In an embodiment of the present application, the apparatus configured to implement the functions of a network device may be a network device, or may be an apparatus that can help a network device to implement, such as a chip system. The apparatus may be installed in the network device. The technical solution provided in the embodiment of the present application is described by using an example in which the apparatus configured to implement the functions of a network device is a network device.

[0087] 3.Modulation Coding Scheme (MCS)

[0088] The NR system supports multiple modulation and coding schemes. In terms of technology type, the modulation includes Quadrature Phase Shift Keying (QPSK) modulation and Quadrature Amplitude Modulation (QAM). QAM may include modulation schemes such as 16QAM, 64QAM, and 256QAM based on different modulation orders. In the case of a terminal device with good channel quality, in order to obtain a higher communication rate, the network device usually transmits a downlink signal to the terminal device by using a higher order modulation scheme, for example, 256QAM or 64QAM, or the terminal device transmits an uplink signal by using a higher order modulation scheme. In the case of a terminal device with poor channel quality, in order to ensure communication reliability, the network device transmits a downlink signal to the terminal device by using a lower order modulation scheme, for example, QPSK or 16QAM. In addition to the modulation order, the MCS further includes a coding rate. The coding rate is usually expressed as a decimal or fractional number greater than 0 and less than or equal to 1, for example, 1 / 2 or 2 / 3. The lower the coding rate, the more redundant bits are added, and the higher the communication reliability, but the lower the communication efficiency. Therefore, for a terminal device with good channel quality, the network device usually uses a high coding rate to maintain high communication efficiency. For a terminal device with poor channel quality, the network device uses a low coding rate to ensure high communication reliability.

[0089] In an embodiment of the present invention, a new set of modulation and coding schemes is provided to improve communication efficiency, the set of modulation and coding schemes including one or more 1024QAM schemes.

[0090] NR rate matching is performed based on the MCS index value. Different state values ​​of the N-bit indication field represent different MCS indices. Each MCS index value corresponds to a group of modulation orders and coding rates. In addition, each MCS index value further corresponds to one spectral efficiency. In other words, each MCS index value corresponds to a group of modulation orders, coding rates, and spectral efficiencies. For example, the N-bit indication field may be 2 N , which correspond to 2 state values. N In other words, each state value can correspond to one modulation coding scheme, or two. N It is also possible for the state values ​​to correspond to multiple modulation and coding schemes, that is, some state values ​​are reserved and do not indicate any modulation and coding scheme.

[0091] Based on the above new modulation and coding scheme set (called the first modulation and coding scheme set in this embodiment), an MCS index table is designed in the embodiment of the present invention, which can indicate that it includes 1024QAM. Each MCS index corresponds to one modulation and coding scheme in the modulation and coding scheme set, and each modulation and coding scheme in the modulation and coding scheme set includes a combination of a modulation order and a coding rate.

[0092] In the first arbitrary method, the number of modulation and coding schemes in the first modulation and coding scheme set having a modulation order of 10 is equal to or greater than one-fourth of the total number of all modulation and coding schemes in the first modulation and coding scheme set.

[0093] In the second arbitrary method, the number of modulation and coding schemes in the first modulation and coding scheme set having a modulation order of 10 is equal to or greater than the number of modulation and coding schemes in the first modulation and coding scheme set having a modulation order of 8.

[0094] In a third optional method, the sum of the number of modulation and coding schemes having a modulation order of 10 and the number of modulation and coding schemes having a modulation order of 8 in the first modulation and coding scheme set is equal to or greater than half of the total number of all modulation and coding schemes in the first modulation and coding scheme set.

[0095] The above any methods may be randomly combined or used separately. For example, the first modulation and coding scheme set of this embodiment satisfies both the first any method and the second any method. Indeed, the first modulation and coding scheme set may alternatively satisfy all three any methods.

[0096] For example, for the first modulation and coding scheme set, the number of modulation and coding schemes with a modulation order of 10 is equal to or greater than one-quarter of the total number of all modulation and coding schemes, and the number of modulation and coding schemes with a modulation order of 10 is equal to or greater than the number of modulation and coding schemes with a modulation order of 8. In another example, for the first modulation and coding scheme set, the number of modulation and coding schemes with a modulation order of 10 is equal to or greater than the number of modulation and coding schemes with a modulation order of 8, and the sum of the number of modulation and coding schemes with a modulation order of 10 and the number of modulation and coding schemes with a modulation order of 8 is equal to or greater than half of the total number of all modulation and coding schemes in the first modulation and coding scheme set. In another example, for the first modulation and coding scheme set, the number of modulation and coding schemes with a modulation order of 10 is equal to or greater than one-quarter of the total number of all modulation and coding schemes, the number of modulation and coding schemes with a modulation order of 10 is equal to or greater than the number of modulation and coding schemes with a modulation order of 8 in the first modulation and coding scheme set, and the sum of the number of modulation and coding schemes with a modulation order of 10 and the number of modulation and coding schemes with a modulation order of 8 is equal to or greater than half of the total number of all modulation and coding schemes in the first modulation and coding scheme set.

[0097] Optionally, the number of the at least one modulation and coding scheme with a modulation order of 10 included in the first modulation and coding scheme set may be four, three, eight or six.

[0098] Furthermore, when the number of the at least one modulation and coding scheme with a modulation order of 10 is four, the coding rates corresponding to the four modulation and coding schemes with a modulation order of 10 may be 806 / 1024, 853 / 1024, 900 / 1024, and 948 / 1024, respectively.

[0099] Alternatively, when the number of the at least one modulation and coding scheme with a modulation order of 10 is three, the coding rates corresponding to the three modulation and coding schemes with a modulation order of 10 may be 806 / 1024, 876 / 1024, and 948 / 1024, respectively.

[0100] Alternatively, when the number of the at least one modulation and coding scheme with a modulation order of 10 is eight, the coding rates corresponding to the eight modulation and coding schemes with a modulation order of 10 may be 782 / 1024, 806 / 1024, 829 / 1024, 853 / 1024, 877 / 1024, 900 / 1024, 924 / 1024, and 948 / 1024, respectively.

[0101] Alternatively, when the number of the at least one modulation and coding scheme with a modulation order of 10 is six, the coding rates corresponding to the six modulation and coding schemes with a modulation order of 10 may be 790 / 1024, 822 / 1024, 853 / 1024, 885 / 1024, 916 / 1024, and 948 / 1024, respectively.

[0102] Coding rates are typically expressed as real numbers greater than 0 and less than 1. Coding rates, e.g., 790 / 1024, are expressed as fractions. Alternatively, coding rates may be expressed as rational or decimal numbers.

[0103] Since each modulation and coding scheme corresponds to one modulation order and one coding rate, such correspondence is usually represented by using an MCS index table. Each modulation and coding scheme is represented by using an MCS index value, and each modulation and coding scheme corresponds to one MCS index value and corresponds to a group of modulation orders and coding rates. In addition, each modulation and coding scheme may further correspond to one spectral efficiency.

[0104] In the MCS index table, different index values ​​may indicate modulation and coding schemes with modulation orders of 2, 4, 6, 8, or 10, or may be in a reserved state without indicating any modulation order, coding rate, and / or spectral efficiency. It should be noted that the first modulation and coding scheme set includes MCSs corresponding to all or some of the indices that can represent both the modulation order and the coding rate in the MCS index table corresponding to the modulation and coding schemes.

[0105] The embodiment of the present invention further provides the following several examples of MCS index tables including 1024QAM: In an actual system, one or more of the examples of the MCS index table may be used, or several items of the MCS index table may be used, or a combination of several items of at least two MCS index tables may be used.

[0106] Table 1-1 shows a possible example of an MCS index table corresponding to the first modulation and coding scheme set. [Table 1] TIFF0007605981000002.tif77170

[0107] In Table 1-1, each of the MCS index values ​​0 to 26 corresponds to a modulation and coding scheme. Each of the MCS index values ​​27 to 31 only represents a modulation order and does not correspond to a coding rate, so the first modulation and coding scheme set shown in Table 1-1 includes 27 modulation and coding schemes corresponding to the MCS index values ​​0 to 26. Based on Table 1-1, the first modulation and coding scheme set has one or more of the following characteristics:

[0108] (1) The first modulation and coding scheme set includes three modulation and coding schemes with a modulation order of two.

[0109] (2) The first modulation and coding scheme set includes five modulation and coding schemes with a modulation order of four.

[0110] (3) The first modulation and coding scheme set includes seven modulation and coding schemes with a modulation order of six.

[0111] (4) The first modulation and coding scheme set includes eight modulation and coding schemes with a modulation order of eight.

[0112] (5) The first modulation and coding scheme set includes four modulation and coding schemes with a modulation order of 10.

[0113] (6) In the first modulation and coding scheme set, the coding rates corresponding to the modulation and coding schemes with a modulation order of 10 are 806 / 1024, 853 / 1024, 900 / 1024, and 948 / 1024, respectively.

[0114] Table 1-2 shows another possible example of an MCS index table corresponding to the first modulation and coding scheme set. [Table 2] TIFF0007605981000004.tif65170

[0115] In Table 1-2, each of the MCS index values ​​0 to 26 corresponds to a modulation and coding scheme. Each of the MCS index values ​​27 to 31 only represents a modulation order and does not correspond to a coding rate, so the first modulation and coding scheme set shown in Table 1-2 includes 27 modulation and coding schemes corresponding to the MCS index values ​​0 to 26. Based on Table 1-2, the first modulation and coding scheme set has one or more of the following characteristics:

[0116] (1) The first modulation and coding scheme set includes five modulation and coding schemes with a modulation order of 2.

[0117] (2) The first modulation and coding scheme set includes six modulation and coding schemes with a modulation order of four.

[0118] (3) The first modulation and coding scheme set includes nine modulation and coding schemes with a modulation order of six.

[0119] (4) The first modulation and coding scheme set includes four modulation and coding schemes with a modulation order of eight.

[0120] (5) The first modulation and coding scheme set includes three modulation and coding schemes with a modulation order of 10.

[0121] (6) In the first modulation and coding scheme set, the coding rates corresponding to the modulation and coding schemes with a modulation order of 10 are 806 / 1024, 876 / 1024, and 948 / 1024, respectively.

[0122] Table 1-3 shows another possible example of an MCS index table corresponding to the first modulation and coding scheme set. [Table 3] TIFF0007605981000006.tif73170

[0123] In Table 1-3, each of the MCS index values ​​0 to 26 corresponds to a modulation and coding scheme. Each of the MCS index values ​​27 to 31 only represents a modulation order and does not correspond to a coding rate, so the first modulation and coding scheme set shown in Table 1-3 includes 27 modulation and coding schemes corresponding to the MCS index values ​​0 to 26. Based on Table 1-3, the first modulation and coding scheme set has one or more of the following characteristics:

[0124] (1) The first modulation and coding scheme set includes three modulation and coding schemes with a modulation order of two.

[0125] (2) The first modulation and coding scheme set includes three modulation and coding schemes with a modulation order of four.

[0126] (3) The first modulation and coding scheme set includes five modulation and coding schemes with a modulation order of six.

[0127] (4) The first modulation and coding scheme set includes eight modulation and coding schemes with a modulation order of eight.

[0128] (5) The first modulation and coding scheme set includes eight modulation and coding schemes with a modulation order of 10.

[0129] (6) In the first modulation and coding scheme set, the coding rates corresponding to the modulation and coding schemes with a modulation order of 10 are 782 / 1024, 806 / 1024, 829 / 1024, 853 / 1024, 877 / 1024, 900 / 1024, 924 / 1024, and 948 / 1024, respectively.

[0130] Table 1-4 shows another possible example of an MCS index table corresponding to the first modulation and coding scheme set. [Table 4] TIFF0007605981000008.tif76170

[0131] In Table 1-4, each of the MCS index values ​​0 to 26 corresponds to a modulation and coding scheme. Each of the MCS index values ​​27 to 31 only represents a modulation order and does not correspond to a coding rate, so the first modulation and coding scheme set shown in Table 1-4 includes 27 modulation and coding schemes corresponding to the MCS index values ​​0 to 26. Based on Table 1-4, the first modulation and coding scheme set has one or more of the following characteristics:

[0132] (1) The first modulation and coding scheme set includes three modulation and coding schemes with a modulation order of two.

[0133] (2) The first modulation and coding scheme set includes three modulation and coding schemes with a modulation order of four.

[0134] (3) The first modulation and coding scheme set includes seven modulation and coding schemes with a modulation order of six.

[0135] (4) The first modulation and coding scheme set includes eight modulation and coding schemes with a modulation order of eight.

[0136] (5) The first modulation and coding scheme set includes six modulation and coding schemes with a modulation order of 10.

[0137] (6) In the first modulation and coding scheme set, the coding rates corresponding to the modulation and coding schemes with a modulation order of 10 are 790 / 1024, 822 / 1024, 853 / 1024, 885 / 1024, 916 / 1024, and 948 / 1024, respectively.

[0138] The number of modulation and coding schemes included in the first modulation and coding scheme set and the number of modulation and coding schemes in the first modulation and coding scheme set with a modulation order of 10 reflected in the above table are merely examples. The MCS index table corresponding to the first modulation and coding scheme set provided in this application can take multiple forms, which will not be listed one by one here.

[0139] Currently, in the NR system, the maximum modulation order corresponding to the MCS is 8. For some terminal devices with good channel quality, such as terminal devices located in the network central area, the communication efficiency of the terminal device is limited by the modulation order of the MCS, and as a result, communication at a higher rate cannot be implemented. In view of this, the technical solution of the embodiment of the present application is provided. In the embodiment of the present application, the number of modulation and coding schemes with a modulation order of 10 is increased, so that the terminal can implement communication at a higher rate when the channel quality is good.

[0140] 4. Channel Quality Information (CQI)

[0141] The NR system supports link adaptation technology. Specifically, a terminal measures the channel quality between the terminal and a base station and feeds back channel quality information (CQI) to the base station, so that the base station can obtain the channel quality between the base station and the terminal, and the base station can more accurately select the MCS for transmitting the downlink signal.

[0142] The terminal device may feed back the CQI to the network device by sending a CQI index to the network device, where the CQI index may be determined from a CQI index table, where each CQI index corresponds to one modulation and coding scheme, and each modulation and coding scheme corresponds to a combination of a modulation scheme and a coding rate.

[0143] Furthermore, the embodiment of the present invention provides a new modulation and coding scheme set, referred to as the second modulation and coding scheme set in this embodiment, which is used by the terminal device to feed back the CQI, and correspondingly, the second modulation and coding scheme set is used by the network device to determine the CQI.

[0144] The second modulation and coding scheme set provided in this embodiment includes 1024QAM. Each modulation and coding scheme corresponds to a combination of a modulation order and a coding rate. In addition, each modulation and coding scheme may further include an efficiency. In the CQI index table, the modulation and coding schemes represented by different index values ​​may correspond to different modulation schemes, or may be in a reserved state without indicating any modulation order. For example, some index values ​​indicate a modulation and coding scheme with a modulation order of 2, i.e., a QPSK modulation scheme, some index values ​​indicate a modulation and coding scheme with a modulation order of 4, i.e., a 16QAM modulation scheme, some index values ​​indicate a modulation and coding scheme with a modulation order of 6, i.e., a 64QAM modulation scheme, some index values ​​indicate a modulation and coding scheme with a modulation order of 8, i.e., a 256QAM modulation scheme, and some index values ​​indicate a modulation and coding scheme with a modulation order of 10, i.e., a 1024QAM modulation scheme.

[0145] In the first arbitrary method, the number of modulation and coding schemes in the second modulation and coding scheme set whose modulation order is 10 is 2 It is equal to or greater than one-quarter of the total number of all modulation and coding schemes in the modulation and coding scheme set.

[0146] In the second arbitrary method, the number of modulation and coding schemes in the second modulation and coding scheme set whose modulation order is 10 is 2 The number is equal to or greater than the number of modulation and coding schemes with a modulation order of 8 in the modulation and coding scheme set.

[0147] In a third optional method, the sum of the number of modulation and coding schemes having a modulation order of 10 and the number of modulation and coding schemes having a modulation order of 8 in the second modulation and coding scheme set is equal to or greater than half of the total number of all modulation and coding schemes in the second modulation and coding scheme set.

[0148] It should be noted that the number of modulation and coding schemes with a modulation order of 10 may satisfy two or more of any of the above methods. For example, for the second modulation and coding scheme set, the number of modulation and coding schemes with a modulation order of 10 is equal to or greater than one-fourth of the total number of all modulation and coding schemes, and the number of modulation and coding schemes with a modulation order of 10 is equal to or greater than the number of modulation and coding schemes with a modulation order of 8. In another example, for the second modulation and coding scheme set, the number of modulation and coding schemes with a modulation order of 10 is equal to or greater than the number of modulation and coding schemes with a modulation order of 8, and the sum of the number of modulation and coding schemes with a modulation order of 10 and the number of modulation and coding schemes with a modulation order of 8 is equal to or greater than the number of modulation and coding schemes with a modulation order of 10. 2 In another example, for the second modulation and coding scheme set, the number of modulation and coding schemes with a modulation order of 10 is equal to or greater than one-quarter of the total number of all modulation and coding schemes in the modulation and coding scheme set, and the number of modulation and coding schemes with a modulation order of 10 is equal to or greater than one-quarter of the total number of all modulation and coding schemes in the second modulation and coding scheme set. 2 The number of modulation and coding schemes with a modulation order of 8 or more in the modulation and coding scheme set is equal to or greater than the number of modulation and coding schemes with a modulation order of 10 and the number of modulation and coding schemes with a modulation order of 8. 2 It is equal to or greater than half of the total number of all modulation and coding schemes in the modulation and coding scheme set.

[0149] More specifically, the second modulation and coding scheme set includes at least one modulation and coding scheme with a modulation order of 10. Optionally, the number of the at least one modulation and coding scheme with a modulation order of 10 can be 4 or 2. Optionally, when the number of the at least one modulation and coding scheme with a modulation order of 10 is 4, the coding rates corresponding to the four modulation and coding schemes with a modulation order of 10 are 806 / 1024, 853 / 1024, 900 / 1024, and 948 / 1024, respectively; or when the number of the at least one modulation and coding scheme with a modulation order of 10 is 2, the coding rates corresponding to the two modulation and coding schemes with a modulation order of 10 are 853 / 1024 and 948 / 1024, respectively.

[0150] The embodiment of the present invention further provides the following several examples of CQI index tables including 1024QAM: In an actual system, one or more of the examples of the CQI index table may be used, or several items in the CQI index table may be used, or a combination of several items of at least two CQI index tables may be used.

[0151] Table 2-1 shows a possible example of a CQI index table corresponding to the second modulation and coding scheme set. [Table 5]

[0152] In Table 2-1, each CQI index represents a modulation and coding scheme. Based on Table 2-1, the second modulation and coding scheme set may have one or more of the following characteristics:

[0153] (1) The second modulation and coding scheme set includes two modulation and coding schemes with a modulation order of 2.

[0154] (2) The second modulation and coding scheme set includes two modulation and coding schemes with a modulation order of four.

[0155] (3) The second modulation and coding scheme set includes three modulation and coding schemes with a modulation order of six.

[0156] (4) The second modulation and coding scheme set includes four modulation and coding schemes with a modulation order of eight.

[0157] (5) The second modulation and coding scheme set includes four modulation and coding schemes with a modulation order of 10.

[0158] (6) In the second modulation and coding scheme set, the coding rates corresponding to the modulation and coding schemes with a modulation order of 10 are 806 / 1024, 853 / 1024, 900 / 1024, and 948 / 1024, respectively.

[0159] Table 2-2 shows another possible example of a CQI index table corresponding to the second modulation and coding scheme set. [Table 6]

[0160] In Table 2-2, each CQI index represents a modulation and coding scheme. Based on Table 2-2, the second modulation and coding scheme set may have one or more of the following characteristics:

[0161] (1) The second modulation and coding scheme set includes three modulation and coding schemes with a modulation order of two.

[0162] (2) The second modulation and coding scheme set includes three modulation and coding schemes with a modulation order of four.

[0163] (3) The second modulation and coding scheme set includes five modulation and coding schemes with a modulation order of six.

[0164] (4) The second modulation and coding scheme set includes two modulation and coding schemes with a modulation order of 8.

[0165] (5) The second modulation and coding scheme set includes two modulation and coding schemes with a modulation order of 10.

[0166] (6) In the second modulation and coding scheme set, the coding rates corresponding to the modulation and coding schemes with a modulation order of 10 are 853 / 1024 and 948 / 1024, respectively.

[0167] Table 2-3 shows another possible example of a CQI index table corresponding to the second modulation and coding scheme set. [Table 7]

[0168] In Table 2-3, each CQI index represents a modulation and coding scheme. Based on Table 2-3, the second modulation and coding scheme set may have one or more of the following characteristics:

[0169] (1) The second modulation and coding scheme set includes two modulation and coding schemes with a modulation order of 2.

[0170] (2) The second modulation and coding scheme set includes one modulation and coding scheme with a modulation order of four.

[0171] (3) The second modulation and coding scheme set includes four modulation and coding schemes with a modulation order of six.

[0172] (4) The second modulation and coding scheme set includes four modulation and coding schemes with a modulation order of eight.

[0173] (5) The second modulation and coding scheme set includes four modulation and coding schemes with a modulation order of 10.

[0174] (6) In the second modulation and coding scheme set, the coding rates corresponding to the modulation and coding schemes with a modulation order of 10 are 790 / 1024, 822 / 1024, 885 / 1024, and 948 / 1024, respectively.

[0175] The second modulation and coding scheme set and the number of modulation and coding schemes whose modulation scheme is 1024QAM reflected in the above table are merely examples. The CQI index table corresponding to the second modulation and coding scheme set provided in this application can take multiple forms, which are not listed one by one here.

[0176] It should be noted that although the embodiment of the present invention provides an improved MCS index table and an improved CQI index table, in actual use, only one of the MCS index table and the CQI index table of the embodiment of the present invention may be used, and the other table may be used in the same technology as the current technology. For example, only the MCS index table provided in the embodiment of the present invention may be used, or only the CQI index table provided in the embodiment of the present invention may be used. Indeed, both the MCS index table and the CQI index table may be used in the manner provided in the embodiment of the present invention.

[0177] The embodiment of the present application provides a communication method, so as to improve the communication rate of a terminal device with good channel conditions, including a terminal device in a network central area. Figure 2 is a flow chart of the method. In the following description, an example is used in which the method is applied to the schematic diagram of the network architecture shown in Figure 1.

[0178] For ease of description, an example in which the method is performed by a network device and a terminal device is used below. For example, the embodiment of the present application is applied to the network architecture shown in Figure 1. Therefore, the network device described below may be, for example, an access network device in the network architecture shown in Figure 1, and the terminal device described below may be a terminal device in the network architecture shown in Figure 1.

[0179] S20: The network device determines a first modulation and coding scheme (MCS) in a first modulation and coding scheme set.

[0180] In this embodiment, the network device may determine the first MCS based on a preset state or a CQI reported by the terminal device. Indeed, the network device may determine the first MCS randomly or in other ways. The specific implementation is not limited by the embodiment of the present invention.

[0181] S21: The network device sends first indication information to the terminal device, and in response, the terminal device receives first indication information from the network device. The first indication information indicates a first modulation and coding scheme (MCS). The first modulation and coding scheme has a first modulation order and a second coding rate, and the first modulation and coding scheme is a modulation and coding scheme in a first modulation and coding scheme set, and the first modulation and coding scheme set includes at least one modulation and coding scheme with a modulation order of 10.

[0182] Specifically, the first modulation and coding scheme is a modulation and coding scheme in a first modulation and coding scheme set, and each modulation and coding scheme in the first modulation and coding scheme set includes a modulation order and a coding rate.

[0183] In addition to at least one modulation and coding scheme with a modulation order of 10, the first modulation and coding scheme set may further include one or more modulation and coding schemes with modulation orders of 2, 4, 6, 8, etc. The modulation schemes corresponding to the modulation orders of 2, 4, 6, 8 and 10 are QPSK, 16QAM, 64QAM, 256QAM, and 1024QAM.

[0184] Optionally, the first modulation and coding scheme set may be a predefined coding scheme set, or may be indicated by indication information sent by the network device. For example, when the network device communicates with the terminal device, there are multiple available modulation and coding scheme sets. In this case, the network device may indicate to the terminal device through upper layer signaling to determine the first modulation and coding scheme from the first modulation and coding scheme set.

[0185] The first modulation and coding scheme set in this step may be represented in the manner provided in the above embodiment. Details will not be described again here. Furthermore, the first modulation and coding scheme set is an MCS index table. For example, one of Table 1-1 to Table 1-4 may be used. Certainly, other MCS index tables that satisfy the rules of the embodiment of the present invention may also be used.

[0186] S22: The terminal device determines a first modulation and coding scheme corresponding to the first indication information from the first modulation and coding scheme set.

[0187] Specifically, after receiving the first indication information, the terminal device determines, according to the first indication information, a first modulation and coding scheme corresponding to the first indication information from the first modulation and coding scheme set.

[0188] Optionally, the first indication information may be carried in Downlink Control Information (DCI), or the first indication information may be carried in Radio Resource Control (RRC) signaling, or the first indication information may further be carried in a Media Access Control element (MAC CE). In addition, optionally, the first indication information may further indicate resources of a Physical Downlink Shared Channel (PDSCH) or a Physical Uplink Shared Channel (PUSCH).

[0189] S23: The terminal device processes the received first signal based on the first modulation and coding scheme, or the terminal device transmits the first signal based on the first modulation and coding scheme. Correspondingly, the network device transmits the first signal to the terminal device based on the first modulation and coding scheme, or the network device processes the received first signal based on the first modulation and coding scheme.

[0190] After the terminal device determines the first modulation and coding scheme from the first modulation and coding scheme set, the terminal device may process a first signal transmitted by the network device based on the first modulation and coding scheme. In this case, optionally, the first signal is transmitted over a physical downlink shared channel. PDSCH Alternatively, the terminal device may transmit a first signal to the network device based on the first modulation and coding scheme, where optionally the first signal may be a physical uplink shared channel (PUSCH).

[0191] For example, the first signal is a PDSCH, and the modulation order of the first modulation and coding scheme indicated by the first indication information is 10. After the terminal device receives the first indication information and determines the first modulation and coding scheme, the terminal device receives the first signal and decodes the first signal by using the scheme with a modulation order of 10.

[0192] For example, the first signal is a PUSCH, and the modulation order of the first modulation and coding scheme indicated by the first indication information is 10. After the terminal device receives the first indication information and determines the first modulation and coding scheme, the terminal device modulates and codes the first signal by using the scheme with a modulation order of 10, and then transmits the first signal.

[0193] In an embodiment, referring to FIG. 3, before step S20, the communication method further includes the following steps:

[0194] S24: The terminal device sends second indication information to the network device, where the second indication information indicates a first CQI index, the first CQI index corresponds to a second modulation and coding scheme, the second modulation and coding scheme is a modulation and coding scheme in a second modulation and coding scheme set, the second modulation and coding scheme has a second modulation order and a second coding rate, and the second modulation and coding scheme set includes at least one modulation and coding scheme whose modulation order is 10.

[0195] Specifically, the channel quality information corresponding to the first CQI index may be the channel quality information based on which the network device determines the first MCS in step S20. The second modulation and coding scheme is a modulation and coding scheme in a second modulation and coding scheme set, and the first 2 Each modulation and coding scheme in the modulation and coding scheme set has a modulation order and a coding rate. In addition to at least one modulation and coding scheme with a modulation order of 10, the second modulation and coding scheme set may further include modulation and coding schemes with modulation orders of 2, 4, 6, 8, etc. The modulation schemes corresponding to modulation orders of 2, 4, 6, 8, and 10 are QPSK, 16QAM, 64QAM, 256QAM, and 1024QAM, respectively.

[0196] Optionally, the number of modulation and coding schemes with a modulation order of 10 included in the second modulation and coding scheme set is equal to the number of modulation and coding schemes with a modulation order of 10 included in the first modulation and coding scheme set. Furthermore, optionally, the coding rate of the modulation and coding schemes with a modulation order of 10 included in the second modulation and coding scheme set is also equal to the coding rate of the modulation and coding schemes with a modulation order of 10 included in the first modulation and coding scheme set.

[0197] For example, the number of modulation and coding schemes with a modulation order of 10 included in the second modulation and coding scheme set and the number of modulation and coding schemes with a modulation order of 10 included in the first modulation and coding scheme set are both 8, and the coding rates corresponding to the eight modulation and coding schemes with a modulation order of 10 are 782 / 1024, 806 / 1024, 829 / 1024, 853 / 1024, 877 / 1024, 900 / 1024, 924 / 1024, and 948 / 1024.

[0198] Next, the present application provides another communication method, so as to improve the communication rate of terminal devices with good channel conditions, including terminal devices in network central areas. Figure 4 is a flowchart of the method. In the following description, an example is used in which the method is applied to the schematic diagram of the network architecture shown in Figure 1.

[0199] For ease of description, an example in which the method is performed by a network device and a terminal device is used below. For example, the embodiment of the present application is applied to the network architecture shown in Figure 1. Therefore, the network device described below may be, for example, an access network device in the network architecture shown in Figure 1, and the terminal device described below may be a terminal device in the network architecture shown in Figure 1.

[0200] S40: The terminal device determines a first channel quality information CQI.

[0201] Specifically, the terminal device determines a first CQI based on the estimated channel quality.

[0202] S41: The terminal device sends second indication information to the network device, the second indication information indicating a first CQI index corresponding to a first CQI, the first CQI index corresponding to a second modulation and coding scheme, the second modulation and coding scheme being one in a second modulation and coding scheme set, the second modulation and coding scheme having a second modulation order and a second coding rate, and the second modulation and coding scheme set including at least one modulation and coding scheme whose modulation order is 10.

[0203] The second modulation and coding scheme is a modulation and coding scheme in the second modulation and coding scheme set. Each modulation and coding scheme in the second modulation and coding scheme set has a modulation order and a coding rate. In addition to at least one modulation and coding scheme with a modulation order of 10, the second modulation and coding scheme set may further include modulation and coding schemes with modulation orders of 2, 4, 6, 8, etc. The modulation schemes corresponding to the modulation orders of 2, 4, 6, 8, and 10, respectively, are QPSK, 16QAM, 64QAM, 256QAM, and 1024QAM.

[0204] Since each modulation and coding scheme corresponds to one modulation order and one coding rate, such correspondence is usually represented by using a CQI index table. Each modulation and coding scheme is represented by using a CQI index value. Each modulation and coding scheme corresponds to one CQI index value and includes a group of modulation schemes and coding rates. Optionally, each modulation and coding scheme may further include an efficiency. In the CQI index table, the modulation and coding schemes represented by different index values ​​may correspond to different modulation schemes, or may be used as a reserved state without indicating any modulation order. For example, some index values ​​indicate a modulation and coding scheme with a modulation order of 2, i.e., a QPSK modulation scheme, some index values ​​indicate a modulation and coding scheme with a modulation order of 4, i.e., a 16QAM modulation scheme, some index values ​​indicate a modulation and coding scheme with a modulation order of 6, i.e., a 64QAM modulation scheme, some index values ​​indicate a modulation and coding scheme with a modulation order of 8, i.e., a 256QAM modulation scheme, and some index values ​​indicate a modulation and coding scheme with a modulation order of 10, i.e., a 1024QAM modulation scheme.

[0205] The second modulation and coding scheme set in this step may be represented in the manner provided in the above embodiment. The details will not be described again here. Furthermore, the second modulation and coding scheme set is a CQI index table. For example, one of Table 2-1 to Table 2-3 may be used. Certainly, other CQI index tables that satisfy the rules of the embodiment of the present invention may also be used.

[0206] S42: The network device determines a second modulation and coding scheme corresponding to the first CQI index from a second modulation and coding scheme set.

[0207] Specifically, after receiving the second indication information sent by the terminal device, the network device determines a second modulation and coding scheme from the second modulation and coding scheme set according to the first CQI index indicated by the second indication information. Optionally, the second modulation and coding scheme set may be a predefined coding scheme set, or may be indicated by the indication information sent by the network device. For example, when the network device communicates with the terminal device, there are multiple available modulation and coding scheme sets. In this case, the network device may indicate to the terminal device by upper layer signaling that the second modulation and coding scheme is determined from the second modulation and coding scheme set.

[0208] In this embodiment, the methods of Figures 2 and 4 may be used in combination or may be used independently. When the two are used in combination, the embodiment of Figure 4 may be performed, and then the embodiment corresponding to Figure 2 may be performed.

[0209] 5 is a schematic diagram of a possible structure of a communication device according to an embodiment of the present application. The communication device 500 includes a receiving unit 501 and a processing unit 502. Optionally, the communication device may further include a sending unit 503.

[0210] Specifically, the receiving unit is configured to receive information from another device, for example, receive first indication information from a network device, the processing unit is configured to perform internal processing of the device, for example, determine a first modulation and coding scheme, and the sending unit is configured to send information to the other device, for example, send second indication information.

[0211] In implementation, the communication device 500 is configured to implement the functions of the terminal device in the above method embodiment. The communication device 500 may be the terminal device shown in FIG. 1, or may be a module or unit (e.g., a chip) applied to the terminal device.

[0212] In implementation, the communication device 500 is applied to a terminal device in any one of the above steps S20 to S24. The communication device 500 may be a terminal device or a chip configured in a terminal device, and may include units configured to perform the operations performed by the terminal device. In addition, the units of the communication device 500 are configured to implement the operations performed by the terminal device in a corresponding manner.

[0213] In an embodiment, the processing unit 502 is configured to determine a first modulation and coding scheme from a first modulation and coding scheme set. The receiving unit 501 is configured to receive first indication information, where the first indication information indicates the first modulation and coding scheme. order and a first coding rate, the first modulation and coding scheme including at least one modulation and coding scheme having a modulation order of ten.

[0214] Optionally, for a detailed description of the first modulation and coding scheme set and the modulation and coding scheme in the first modulation and coding scheme set with a modulation order of 10, please refer to the relevant description of step S21. The details will not be described again here.

[0215] Optionally, the communication device 500 may further include a sending unit 503 configured to send second indication information, where the second indication information indicates a first CQI index, where the first CQI index corresponds to a second modulation and coding scheme, the second modulation and coding scheme being one in a second modulation and coding scheme set, where the second modulation and coding scheme has a second modulation order and a second coding rate, and the second modulation and coding scheme set includes at least one modulation and coding scheme whose modulation order is 10.

[0216] Optionally, for a detailed description of the second modulation and coding scheme set and the modulation and coding scheme in the second modulation and coding scheme set with a modulation order of 10, please refer to the relevant description of step S24. The details will not be described again here.

[0217] Optionally, the number of modulation and coding schemes in the second modulation and coding scheme set having a modulation order of 10 is equal to the number of modulation and coding schemes in the first modulation and coding scheme set having a modulation order of 10.

[0218] Optionally, the coding rate of the modulation and coding scheme with modulation order 10 in the second modulation and coding scheme set is equal to the coding rate of the modulation and coding scheme with modulation order 10 in the first modulation and coding scheme set.

[0219] In an embodiment, the processing unit 502 is configured to determine a first channel quality information CQI, and the sending unit 503 is configured to send second indication information, where the second indication information indicates a first CQI index corresponding to the first CQI, the first CQI index corresponds to a second modulation and coding scheme, the second modulation and coding scheme having a second modulation order and a second coding rate, the second modulation and coding scheme being one in a second modulation and coding scheme set, and the second modulation and coding scheme set includes at least one modulation and coding scheme whose modulation order is 10.

[0220] Optionally, for a detailed description of the second modulation and coding scheme set and the modulation and coding scheme in the second modulation and coding scheme set with a modulation order of 10, please refer to the relevant description of step S41. The details will not be described again here.

[0221] 6 is a schematic diagram of a possible structure of a communication device according to an embodiment of the present application. The communication device 600 includes a sending unit 601 and a processing unit 602. Optionally, the communication device may further include a receiving unit 603.

[0222] Specifically, the sending unit is configured to send information to another device, for example, to send first indication information, the processing unit is configured to perform internal processing of the device, for example, to determine a first modulation and coding scheme, and the receiving unit is configured to receive information from another device, for example, to receive second indication information from a terminal device.

[0223] In implementation, the communication device 600 is configured to implement the functions of the network device in the above method embodiment. The communication device 600 may be the network device shown in FIG. 1, or may be a module or unit (e.g., a chip) applied to the network device.

[0224] In implementation, the communication device 600 is applied to a network device in any one of the above steps S20 to S24. The communication device 600 may be a network device or a chip in the network device, and may include units configured to perform the operations performed by the network device. In addition, the units of the communication device 600 are configured to implement the operations performed by the network device in a corresponding manner.

[0225] In an embodiment, the processing unit 602 is configured to determine a first modulation and coding scheme from a first modulation and coding scheme set. The sending unit 601 is configured to send a first modulation and coding scheme index to a terminal device, where the first modulation and coding scheme index corresponds to a first modulation and coding scheme, the first modulation and coding scheme has a first modulation order and a first coding rate, and the first modulation and coding scheme set includes at least one modulation and coding scheme whose modulation order is 10.

[0226] Optionally, for a detailed description of the first modulation and coding scheme set and the modulation and coding scheme in the first modulation and coding scheme set with a modulation order of 10, please refer to the relevant description of step S21. The details will not be described again here.

[0227] Optionally, the communication device 600 may further include a receiving unit 603 configured to receive second indication information, where the second indication information indicates a first CQI index, the first CQI index corresponds to a second modulation and coding scheme, the second modulation and coding scheme being one among a second modulation and coding scheme set, the second modulation and coding scheme having a second modulation order and a second coding rate, and the second modulation and coding scheme set including at least one modulation and coding scheme whose modulation order is 10.

[0228] Optionally, for a detailed description of the second modulation and coding scheme set and the modulation and coding scheme in the second modulation and coding scheme set with a modulation order of 10, please refer to the relevant description of step S24. The details will not be described again here.

[0229] Optionally, the number of modulation and coding schemes in the second modulation and coding scheme set having a modulation order of 10 is equal to the number of modulation and coding schemes in the first modulation and coding scheme set having a modulation order of 10.

[0230] Optionally, the coding rate of the modulation and coding scheme with modulation order 10 in the second modulation and coding scheme set is equal to the coding rate of the modulation and coding scheme with modulation order 10 in the first modulation and coding scheme set.

[0231] In an embodiment, the communication device 600 includes a receiving unit 603 and a processing unit 602. The receiving unit 603 receives second indication information. The second indication information indicates a first CQI index corresponding to a first CQI, the first CQI index corresponds to a second modulation and coding scheme, the second modulation and coding scheme has a second modulation order and a second coding rate, the second modulation and coding scheme is one in a second modulation and coding scheme set, the second modulation and coding scheme set includes at least one modulation and coding scheme with a modulation order of 10. The processing unit 602 is configured to determine a first channel quality information CQI from the second modulation and coding scheme set.

[0232] Optionally, for a detailed description of the second modulation and coding scheme set and the modulation and coding scheme in the second modulation and coding scheme set with a modulation order of 10, please refer to the relevant description of step S41. The details will not be described again here.

[0233] For more detailed descriptions of the receiving unit 501, the receiving unit 603, the sending unit 503, the sending unit 601, the processing unit 502, and the processing unit 602, please refer to the relevant descriptions in the above method embodiments. The details will not be described again here. The hardware elements of the receiving unit 501 and the receiving unit 603 may be receivers, and the hardware elements of the sending unit 503 and the sending unit 601 may be Transmitter Alternatively, the hardware element of the receiving unit 501, the receiving unit 603, the transmitting unit 503 or the transmitting unit 601 may be a transceiver. The hardware element of the processing unit 502 or the processing unit 602 may be a processor.

[0234] 7 is a schematic diagram of the structure of a communication device according to an embodiment of the present application. The communication device 700 may be the terminal device of FIG. 1, and is configured to implement a method corresponding to the terminal device in the above method embodiment. Alternatively, the communication device may be the network device of FIG. 1, and is configured to implement a method corresponding to the network device in the above method embodiment. For specific functions, please refer to the description of the above method embodiment.

[0235] The communication device 700 includes one or more processors 701. The processor 701 may also be referred to as a processing unit and may implement certain control functions. The processor 701 may be a general-purpose processor, a special-purpose processor, etc. For example, the processor may include a baseband processor, a central processing unit, an application processor, a modem processor, a graphics processor, an image signal processor, a digital signal processor, a video codec processor, a controller, a memory, a neural network processor, and / or the like. The baseband processor may be configured to process communication protocols and communication data. The central processing unit may be configured to control the communication device 700, execute software programs, and / or process data. The different processors may be separate components or may be integrated into one or more processors, e.g., into one or more application specific integrated circuits.

[0236] Optionally, the communications device 700 includes one or more memories 702 configured to store instructions 704. The instructions may be executed by a processor, thereby: Communication device 700 executes the method described in the above method embodiment. Optionally, the memory 702 may further store data. The processor and the memory may be configured independently or may be integrated together.

[0237] Optionally, the communication device 700 may include instructions 703 (which may also be referred to as code or programs in some cases), which may be executed by a processor, such that the communication device performs the methods described in the above embodiments. The processor 701 may store data.

[0238] Optionally, the communications device 700 may further include a transceiver 705 and an antenna 706. The transceiver 705, which may also be referred to as a transceiver unit, transceiver machine, transceiver circuit, transceiver, input / output interface, etc., is configured to implement transceiver functionality of the communications device 700 through the antenna 706.

[0239] Optionally, the communication device 700 may further include one or more of the following components: a wireless communication module, an audio module, an external memory interface, an internal memory, a universal serial bus (USB) interface, a power management module, an antenna, a speaker, a microphone, an input / output module, a sensor module, a motor, a camera, a display screen, etc. It is understood that in some embodiments, the communication device 700 may include more or fewer components, or some components may be integrated, or some components may be separated. These components may be implemented by hardware, software, or a combination of software and hardware.

[0240] The processor 701 and the transceiver 705 described in the embodiments of the present application may be implemented in an integrated circuit (IC), an analog IC, a radio frequency identification (RFID), a hybrid signal IC, an application specific integrated circuit (ASIC), a printed circuit board (PCB), an electronic device, or the like. The communication device described herein may be an independent device (e.g., an independent integrated circuit, a mobile phone, etc.), or may be a part of a larger device (e.g., a module that can be embedded in other devices). For details, please refer to the above description of the terminal device and the network device. Details will not be described again here.

[0241] An embodiment of the present application provides a terminal device. The terminal device may be used in the above embodiments. The terminal device includes corresponding means, units, and / or circuits for implementing the functions of the terminal device in the embodiments shown in Figure 2, Figure 3, and / or Figure 4. For example, the terminal device includes a transceiver module or transceiver unit configured to help the terminal device implement transceiver functions, and a processing module or processing unit configured to help the terminal device process signals.

[0242] FIG. 8 is a schematic diagram of the structure of a terminal device according to an embodiment of the present application.

[0243] The terminal device 800 is applicable to the architecture shown in FIG. 1. For the sake of simplicity, FIG. 8 only shows the main components of the terminal device 800. As shown in FIG. 8, the terminal device 800 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 entire terminal device 800, execute software programs, and process data of the software programs. The memory is mainly configured to store software programs and data. The control circuit is mainly configured to convert baseband signals and radio frequency signals, and process radio frequency signals. The antenna is mainly configured to transmit and receive radio frequency signals in the form of electromagnetic waves. The input / output device is, for example, a touch screen, a display screen, a microphone, or a keyboard, and is mainly configured to receive data input by a user and output data to a user.

[0244] For example, the terminal device 800 is a mobile phone. After the terminal device 800 is powered on, the processor can read the software program in the storage unit, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be transmitted by using an 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 electromagnetic waves by using an antenna. When data is transmitted to the terminal device 800, 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.

[0245] Those skilled in the art may understand that for simplicity of description, FIG. 8 shows only one memory and one processor. In some embodiments, the terminal device 800 may include multiple processors and memories. The memory may also be referred to as a storage medium, a storage device, etc. This is not a limitation of this embodiment of the present invention.

[0246] In any implementation, 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. The central processing unit is mainly configured to control the entire terminal device 800, execute software programs, and process data of the software programs. The processor in FIG. 8 integrates the functions of the baseband processor and the central processing unit. Those skilled in the art may understand that the baseband processor and the central processing unit may alternatively be independent processors and are interconnected by using a technology such as a bus. The terminal device 800 may include multiple baseband processors to accommodate different network standards. The terminal device 800 may include multiple central processing units to enhance the processing capabilities of the terminal device 800. The components of the terminal device 800 may be connected through various buses. The baseband processor may also be referred to as a baseband processing circuit or a baseband processing chip. The central processing unit may alternatively be referred to as a central processing circuit or a central processing chip. The functionality for processing communication protocols and communication data may be configured in a processor or may be stored in a storage unit in the form of a software program, and the processor executes the software program to implement the baseband processing functionality.

[0247] In one example, the antenna and the control circuit having the transceiver function may be regarded as the transceiver unit 810 of the terminal device 800, and the processor having the processing function may be regarded as the processing unit 820 of the terminal device 800. As shown in FIG. 8, the terminal device 800 includes the transceiver unit 810 and the processing unit 820. The transceiver unit may also be referred to as a transceiver machine, a transceiver, a transceiver device, etc. Optionally, a component in the transceiver unit 810 configured to implement a receiving function may be regarded as a receiving unit, and a component in the transceiver unit 810 configured to implement a transmitting function may be regarded as a transmitting unit. Specifically, the transceiver unit 810 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.

[0248] The embodiments of the present application further provide a network device, which may be used in the above embodiments. The network device includes corresponding means, units, and / or circuits for implementing the functions of the terminal device in the embodiments shown in Figures 2, 3, and / or 4. For example, the network device includes: network The network device includes a transceiver module or unit configured to assist the device in implementing transceiver functionality, and a processing module or unit configured to assist the network device in processing signals.

[0249] 9 is a schematic diagram of the structure of a network device according to an embodiment of the present application. As shown in FIG. 9, the network device 20 is applicable to the architecture shown in FIG. 1. The network device includes a baseband device 201, a radio frequency device 202, and an antenna 203. In the uplink direction, the radio frequency device 202 receives information transmitted by a terminal device through the antenna 203, and sends the information transmitted by the terminal device to the baseband device 201 for processing. In the downlink direction, the baseband device 201 processes the information of the terminal device and sends the information to the radio frequency device 202. The radio frequency device 202 processes the information of the terminal device, and then sends the processed information to the antenna 203. 203 to the terminal device via

[0250] The baseband device 201 includes one or more processing units 2011, a storage unit 2012, and an interface 2013. The processing unit 2011 is configured to help the network device perform the functions of the network device in the above method embodiments. The storage unit 2012 is configured to store software programs and / or data. The interface 2013 is configured to exchange information with the radio frequency device 202. The interface includes an interface circuit configured to input and output information. In 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 integrated circuits. These integrated circuits may be integrated together to form a chip. The storage unit 2012 and the processing unit 2011 may be in the same chip, i.e., an on-chip storage element. Alternatively, the storage unit 20 ... 2 is , may be on a different chip than the processing unit 2011, i.e., an off-chip storage element. The storage unit 2012 may be a memory or may be a collective term for multiple memories or storage elements.

[0251] The network device may implement some or all of the steps in the above method embodiments by using one or more processing units to schedule programs. For example, the corresponding functions of the network devices in Figures 3 and / or 7 are implemented. The one or more processing units may correspond to radio access technologies of the same standard or may correspond to radio access technologies of different standards.

[0252] Those skilled in the art may realize that the example units and methods described with reference to the embodiments disclosed herein may be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether a function is implemented by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but the implementation should not be considered to go beyond the scope of this application.

[0253] In some embodiments provided in the present application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the described device embodiments are merely examples. For example, the unit division is merely a logical functional division, and the units described as separate parts may or may not be physically separated, and the parts displayed as units may or may not be physical units, and may be located in one place or distributed over multiple network units. Some or all of the units may be selected based on actual requirements to achieve the purpose of the solution of the embodiment.

[0254] When the functions are implemented in the form of a software functional unit and sold or used as an independent product, the functions may be stored in a computer-readable storage medium. Based on such understanding, the technical solutions of the present application may be essentially implemented in the form of a software product, or the part that contributes to the prior art, or the part of the technical solutions. The computer software product is stored in a storage medium and includes some instructions that instruct a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method described in the embodiments of the present application. The above computer-readable storage medium may be any available medium accessible by a computer. By way of example, and not limitation, a computer readable medium may include random access memory (RAM), read-only memory (ROM), programmable ROM (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 optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store the expected program code in the form of instructions or data structures and that can be accessed by a computer.Additionally, by way of example and not limitation, many types of RAM may be used, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and direct rambus RAM (DR RAM).

[0255] As used herein, terms such as "component," "module," and "system" are used to indicate computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component may be, but is not limited to, a process running on a processor, a processor, an object, an executable file, a thread of execution, a program, or a computer. As illustrated, both a computing device and an application running on a computing device may be components. One or more components may reside within a process or thread of execution, and a component may be located on one computer or distributed among two or more computers. Additionally, these components may execute from various computer-readable media that store various data structures. For example, components may communicate by using local or remote processes based on signals having one or more data packets (e.g., data from two components interacting with other components in a local system, in a distributed system, or across a network such as the Internet that interacts with other systems by using signals).

[0256] References throughout this specification to an "embodiment" mean that a particular feature, structure, or characteristic associated with this embodiment is included in at least one embodiment of the present application. Thus, embodiments throughout the specification do not necessarily refer to the same embodiment. In addition, the particular features, structures, or characteristics may be combined into one or more embodiments by using any suitable method.

[0257] It should be understood that in the embodiments of the present application, the numbers "first", "second", etc. are merely for distinguishing different objects, e.g., for distinguishing different network devices, and do not constitute a limitation on the scope of the embodiments of the present application. The embodiments of the present application are not so limited.

[0258] It should be further understood that in this application, both "when" and "if" mean that a network element performs the corresponding processing in an objective situation, but do not constitute a limitation on time, do not require that the network element have a decision-making action during implementation, and do not imply any other limitation.

[0259] It should be further understood that, as used herein, "at least one" means one or more, and "plurality" means two or more.

[0260] In the embodiments of the present application, it should be further understood that "B corresponding to A" indicates that B is related to A and B can be determined based on A. However, it should be further understood that determining B based on A does not mean that B is determined only based on A. B may alternatively be determined based on A and / or other information.

[0261] The term "and / or" in this specification only describes an association relationship that describes related objects and indicates that three relationships may exist. For example, A and / or B may represent three cases: only A exists, both A and B exist, and only B exists. In addition, the character " / " in this specification generally indicates a "logical or" relationship between related objects.

[0262] Unless otherwise specified, expressions used herein similar to "an item includes one or more of the following A, B, and C" mean that the item can be any one of the following: A; B; C; A and B; A and C; B and C; A and B and C; A and A; A and A and A; A and A and B; A and A and C; A and B and B; A and C and C; B and B; B and B and B; B and B and C; C and C; C and C and C; and other combinations of A, B and C. In the above description, the three elements A, B, and C are used as examples to describe optional cases of an item. If the expression "an item includes one or more of the following A, B, ..., or X" means that if more elements are included in the expression, the cases where the item is applicable may also be determined according to the above rules.

[0263] It may be understood that in the embodiments of the present application, the terminal device and / or the network device may perform some or all of the steps of the embodiments of the present application. These steps or operations are merely examples. In the embodiments of the present application, other operations or various modifications of operations may also be performed. In addition, steps may be performed in an order different from that shown in the embodiments of the present application, and all operations of the embodiments of the present application may not be performed.

[0264] Those skilled in the art may realize that, in combination with the examples described in the embodiments disclosed herein, the units and algorithm steps may be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether a function is implemented by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but the implementation should not be considered to go beyond the scope of the present application.

[0265] As can be clearly understood by those skilled in the art, for convenience and concise description, the detailed operation processes of the above systems, devices and units are referred to the corresponding processes in the above method embodiments, and the details are not described again here.

[0266] In some embodiments provided in the present application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the described device embodiment is merely an example. For example, the division into units is merely a logical division of functions, and may be other divisions in actual implementation. For example, multiple units or components may be combined or integrated into other systems, or some functions may be ignored or not performed. In addition, the shown or discussed interconnections or direct couplings or communication connections may be implemented by using some interface. Indirect couplings or communication connections between devices or units may be implemented in electronic, mechanical, or other forms.

[0267] The units described as separate parts may or may not be physically separated, and the parts shown as units may or may not be physical units, and may be located in one place or distributed among multiple network units. Some or all of the units may be selected based on actual requirements to achieve the objectives of the solutions of the embodiments.

[0268] In addition, the functional units of the embodiments of the present application may be integrated into one processing unit, each of the units may exist physically independent, or two or more units may be integrated into one unit.

[0269] When the functions are implemented in the form of a software functional unit and sold or used as an independent product, the functions may be stored in a computer-readable storage medium. Based on such understanding, the technical solutions of the present application may be essentially implemented in the form of a software product, or the part that contributes to the prior art, or some of the technical solutions may be implemented in the form of a software product. The computer software product is stored in a storage medium and includes some instructions that instruct a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method described in the embodiments of the present application. The above storage medium includes any medium that can store program code, such as a USB flash drive, a removable hard disk, a read-only memory ROM, a random access memory RAM, a magnetic disk, or an optical disk.

[0270] The above description is merely a specific implementation of the present application, and is not intended to limit the scope of protection of the present application. Any modifications or replacements that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be within the scope of protection of the present application. Therefore, the scope of protection of the present application should be subject to the scope of protection of the claims.

Claims

1. receiving first indication information, the first indication information indicating a first modulation and coding scheme; determining a first modulation and coding scheme indicated by the first indication information from a first modulation and coding scheme set, the first modulation and coding scheme set including modulation and coding schemes with modulation orders of 2, 4, 6, 8, and 10, respectively, the first modulation and coding scheme set including 27 modulation and coding schemes with indexes of 0 to 26, the 27 modulation and coding schemes including three modulation and coding schemes with a modulation order of 2, three modulation and coding schemes with a modulation order of 4, nine modulation and coding schemes with a modulation order of 6, eight modulation and coding schemes with a modulation order of 8, and four modulation and coding schemes with a modulation order of 10, the coding rates corresponding to the four modulation and coding schemes with a modulation order of 10 are 853 / 1024 and 948 / 1024; A communication method comprising:

2. The coding rates corresponding to the three modulation coding schemes having a modulation order of 3 are 120 / 1024, 193 / 1024, and 449 / 1024, respectively; The coding rates corresponding to the three modulation and coding schemes with the modulation order of 4 are 378 / 1024, 490 / 1024, and 616 / 1024, respectively. The coding rates corresponding to the nine modulation and coding schemes with the modulation order of 6 are 466 / 1024, 517 / 1024, 567 / 1024, 616 / 1024, 666 / 1024, 719 / 1024, 772 / 1024, 822 / 1024, and 873 / 1024, respectively; The coding rates corresponding to the eight modulation and coding schemes with the modulation order of 8 are 682.5 / 1024, 711 / 1024, 754 / 1024, 797 / 1024, 841 / 1024, 885 / 1024, 916.5 / 1024, and 948 / 1024, respectively. The communication method according to claim 1 .

3. The first modulation and coding scheme set corresponds to a first modulation and coding scheme index table, and each modulation and coding scheme in the first modulation and coding scheme set includes a spectral efficiency, and the three modulation and coding schemes with a modulation order of 3, the three modulation and coding schemes with a modulation order of 4, the nine modulation and coding schemes with a modulation order of 6, and the eight modulation and coding schemes with a modulation order of 8 correspond to the following portions in the first modulation and coding scheme index table: 【Table 1】 The communication method according to claim 2 .

4. The first indication information is carried in downlink control information (DCI). The communication method according to claim 1 .

5. After determining a first modulation and coding scheme indicated by the first indication information from a first modulation and coding scheme set, the communication method includes: processing a received first signal based on the first modulation and coding scheme; or Transmitting a first signal based on the first modulation and coding scheme. Further comprising The communication method according to claim 1 .

6. determining a first modulation and coding scheme from a first modulation and coding scheme set, the first modulation and coding scheme set including modulation and coding schemes with modulation orders of 2, 4, 6, 8, and 10, respectively, the first modulation and coding scheme set including 27 modulation and coding schemes with indices of 0 to 26, the 27 modulation and coding schemes including 3 modulation and coding schemes with a modulation order of 2, 3 modulation and coding schemes with a modulation order of 4, 9 modulation and coding schemes with a modulation order of 6, 8 modulation and coding schemes with a modulation order of 8, and 4 modulation and coding schemes with a modulation order of 10, the coding rates corresponding to the 4 modulation and coding schemes with a modulation order of 10 are 853 / 1024 and 948 / 1024; transmitting first indication information, the first indication information indicating the first modulation and coding scheme; A communication method comprising:

7. The coding rates corresponding to the three modulation coding schemes having a modulation order of 3 are 120 / 1024, 193 / 1024, and 449 / 1024, respectively; The coding rates corresponding to the three modulation and coding schemes with the modulation order of 4 are 378 / 1024, 490 / 1024, and 616 / 1024, respectively. The coding rates corresponding to the nine modulation and coding schemes with the modulation order of 6 are 466 / 1024, 517 / 1024, 567 / 1024, 616 / 1024, 666 / 1024, 719 / 1024, 772 / 1024, 822 / 1024, and 873 / 1024, respectively; The coding rates corresponding to the eight modulation and coding schemes with the modulation order of 8 are 682.5 / 1024, 711 / 1024, 754 / 1024, 797 / 1024, 841 / 1024, 885 / 1024, 916.5 / 1024, and 948 / 1024, respectively. The communication method according to claim 6.

8. The first modulation and coding scheme set corresponds to a first modulation and coding scheme index table, and each modulation and coding scheme in the first modulation and coding scheme set includes a spectral efficiency, and the three modulation and coding schemes with a modulation order of 3, the three modulation and coding schemes with a modulation order of 4, the nine modulation and coding schemes with a modulation order of 6, and the eight modulation and coding schemes with a modulation order of 8 correspond to the following portions in the first modulation and coding scheme index table: 【Table 2】 The communication method according to claim 7.

9. The first indication information is carried in downlink control information (DCI). The communication method according to claim 6.

10. After determining the first modulation and coding scheme from the first modulation and coding scheme set, the communication method includes: processing a received first signal based on the first modulation and coding scheme; or Transmitting a first signal based on the first modulation and coding scheme. Further comprising The communication method according to claim 6.

11. a receiving unit configured to receive first indication information, the first indication information indicating a first modulation and coding scheme; a processing unit configured to determine a first modulation and coding scheme indicated by the first indication information from a first modulation and coding scheme set, the first modulation and coding scheme set including modulation and coding schemes with modulation orders of 2, 4, 6, 8, and 10, respectively, the first modulation and coding scheme set including 27 modulation and coding schemes with indexes of 0 to 26, the 27 modulation and coding schemes including 3 modulation and coding schemes with a modulation order of 2, 3 modulation and coding schemes with a modulation order of 4, 9 modulation and coding schemes with a modulation order of 6, 8 modulation and coding schemes with a modulation order of 8, and 4 modulation and coding schemes with a modulation order of 10, the coding rates corresponding to the 4 modulation and coding schemes with a modulation order of 10 are 853 / 1024 and 948 / 1024; A communication device having the above configuration.

12. The coding rates corresponding to the three modulation coding schemes having a modulation order of 3 are 120 / 1024, 193 / 1024, and 449 / 1024, respectively; The coding rates corresponding to the three modulation and coding schemes with the modulation order of 4 are 378 / 1024, 490 / 1024, and 616 / 1024, respectively. The coding rates corresponding to the nine modulation and coding schemes with the modulation order of 6 are 466 / 1024, 517 / 1024, 567 / 1024, 616 / 1024, 666 / 1024, 719 / 1024, 772 / 1024, 822 / 1024, and 873 / 1024, respectively; The coding rates corresponding to the eight modulation and coding schemes with the modulation order of 8 are 682.5 / 1024, 711 / 1024, 754 / 1024, 797 / 1024, 841 / 1024, 885 / 1024, 916.5 / 1024, and 948 / 1024, respectively. The communication device according to claim 11.

13. The first modulation and coding scheme set corresponds to a first modulation and coding scheme index table, and each modulation and coding scheme in the first modulation and coding scheme set includes a spectral efficiency, and the three modulation and coding schemes with a modulation order of 3, the three modulation and coding schemes with a modulation order of 4, the nine modulation and coding schemes with a modulation order of 6, and the eight modulation and coding schemes with a modulation order of 8 correspond to the following portions in the first modulation and coding scheme index table: 【Table 3】 13. The communication device of claim 12.

14. The first indication information is carried in downlink control information (DCI). The communication device according to claim 11.

15. After determining a first modulation and coding scheme corresponding to the first indication information from a first modulation and coding scheme set, the processing unit processes a received first signal based on the first modulation and coding scheme, or the communication device further includes a transmitting unit configured to transmit a first signal based on the first modulation and coding scheme. The communication device according to claim 11.

16. a processing unit configured to determine a first modulation and coding scheme from a first modulation and coding scheme set, the first modulation and coding scheme set including modulation and coding schemes with modulation orders of 2, 4, 6, 8, and 10, respectively, the first modulation and coding scheme set including 27 modulation and coding schemes with indices from 0 to 26, the 27 modulation and coding schemes including 3 modulation and coding schemes with a modulation order of 2, 3 modulation and coding schemes with a modulation order of 4, 9 modulation and coding schemes with a modulation order of 6, 8 modulation and coding schemes with a modulation order of 8, and 4 modulation and coding schemes with a modulation order of 10, the coding rates corresponding to the 4 modulation and coding schemes with a modulation order of 10 are 853 / 1024 and 948 / 1024; a transmitting unit configured to transmit first indication information, the first indication information indicating the first modulation and coding scheme; A communication device having the above configuration.

17. The coding rates corresponding to the three modulation coding schemes having a modulation order of 3 are 120 / 1024, 193 / 1024, and 449 / 1024, respectively; The coding rates corresponding to the three modulation and coding schemes with the modulation order of 4 are 378 / 1024, 490 / 1024, and 616 / 1024, respectively. The coding rates corresponding to the nine modulation and coding schemes with the modulation order of 6 are 466 / 1024, 517 / 1024, 567 / 1024, 616 / 1024, 666 / 1024, 719 / 1024, 772 / 1024, 822 / 1024, and 873 / 1024, respectively; The coding rates corresponding to the eight modulation and coding schemes with the modulation order of 8 are 682.5 / 1024, 711 / 1024, 754 / 1024, 797 / 1024, 841 / 1024, 885 / 1024, 916.5 / 1024, and 948 / 1024, respectively.

17. The communication device of claim 16.

18. The first modulation and coding scheme set corresponds to a first modulation and coding scheme index table, and each modulation and coding scheme in the first modulation and coding scheme set includes a spectral efficiency, and the three modulation and coding schemes with a modulation order of 3, the three modulation and coding schemes with a modulation order of 4, the nine modulation and coding schemes with a modulation order of 6, and the eight modulation and coding schemes with a modulation order of 8 correspond to the following portions in the first modulation and coding scheme index table: 【Table 4】 20. The communication device of claim 17.

19. The first indication information is carried in downlink control information (DCI).

17. The communication device of claim 16.

20. After determining a first modulation and coding scheme from a first modulation and coding scheme set, the processing unit is configured to process a received first signal based on the first modulation and coding scheme, or the communication device further comprises a transmitting unit configured to transmit a first signal based on the first modulation and coding scheme.

17. The communication device of claim 16.

21. A processor and a memory, the memory is configured to store one or more computer programs; The communication method according to any one of claims 1 to 10 is carried out when the one or more computer programs are executed. Communications equipment.

22. configured to store a computer program; When the computer program is executed on a computer, the computer is capable of carrying out the communication method according to any one of claims 1 to 10. A computer-readable storage medium.

23. A chip system comprising a processor configured to implement the communication method according to any one of claims 1 to 10.

24. and further comprising a memory configured to store program instructions and / or data. The chip system of claim 23.

25. A communication device according to any one of claims 11 to 15, A communication device according to any one of claims 16 to 20; A communication system having the above configuration.

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