Communication method and related products

Abstract

The embodiment of the application discloses a communication method and related products, the method comprises the following steps: sending a first message to a terminal device, the first message is used for indicating a first modulation order of each subband in at least one subband; receiving data from the terminal device or sending data to the terminal device by using the at least one subband according to the first modulation order.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a communication method and related products. Background Art

[0002] Channels can be divided into control channels and data channels according to their functions. Control channels are used to carry control information, and data channels are used to carry valid data. The data carried on all channels needs to be channel coded and modulated. Common modulation methods in current New Radio Access Technology (NR) systems include Quadrature Phase Shift Keying (QPSK), 16-order Quadrature Amplitude Modulation (QAM), 64QAM and even higher 256QAM, with corresponding modulation orders of 2, 4, 6 and 8, respectively. That is, each complex signal can carry 2 bits, 4 bits, 6 bits and 8 bits of information.

[0003] Therefore, the higher the modulation order, the more bits a complex signal carries, and the higher the system transmission efficiency. However, in a fading channel, affected by noise and signal fading, the higher the modulation order, the more difficult it is for the receiver to correctly demodulate the received complex signal, that is, the receiver is more likely to demodulate the received complex signal into erroneous bit information. Therefore, in order to improve transmission efficiency, the NR system supports adaptive modulation and coding (AMC), that is, according to the fading size of the channel, the appropriate modulation order is selected for modulation and transmission to improve transmission efficiency. In addition, during the transmission process, due to the influence of channel fading, the power of the received signal may be much smaller than the power of the transmitted signal. In order to ensure that the signal can be received by the receiver after fading, the transmitter will send the signal at a higher power.

[0004] In the current NR system, after determining the modulation order, AMC uses the same modulation order to modulate the data across the entire scheduled bandwidth (all subcarriers); similarly, after determining the transmit power, the same transmit power is used on each subcarrier to transmit data. However, frequency-selective fading exists between subcarriers, meaning that the channel fading corresponding to different subcarriers is different. Therefore, the existing modulation scheme and the method for determining transmit power do not accurately adapt to the channel fading characteristics between subcarriers, reducing transmission efficiency. Summary of the Invention

[0005] The present application provides a communication method and related products, which respectively control the modulation order and transmission power of each sub-band to improve communication efficiency.

[0006] In a first aspect, an embodiment of the present application provides a communication method, comprising: sending a first message to a terminal device, wherein the first message is used to indicate a first modulation order for each subband in at least one subband; and according to the first modulation order, using the at least one subband to receive data from the terminal device or send data to the terminal device.

[0007] The first modulation order of each sub-band is determined by the network device according to the channel quality corresponding to each sub-band.

[0008] As can be seen, in this embodiment of the present application, the network device can indicate the first modulation order of each subband via a first message, thereby successfully indicating the first modulation order of each subband to the terminal device; the network device then transmits data with the terminal device based on the first modulation order of each subband. Because the first modulation order of each subband is determined based on the channel quality of each subband, the channel fading characteristics of each subband are fully considered during data transmission, meeting the modulation order requirements of each subband, thereby improving data transmission efficiency.

[0009] In some possible implementations, the first message includes an index of the first modulation order.

[0010] It can be seen that in this embodiment, the first modulation order of each sub-band is indicated by an index, thereby improving the flexibility of indicating the first modulation order of each sub-band.

[0011] In some possible implementations, the first message is downlink control information DCI or radio resource control RRC message.

[0012] It can be seen that in this embodiment, the first modulation order of each subband can be indicated through a DCI or RRC message, thereby successfully indicating the first modulation order of each subband to the terminal device.

[0013] In some possible implementations, before sending the first message to the terminal device, the method further includes: sending a second message to the terminal device, where the second message is used to indicate a second modulation order for each subband in at least one subband.

[0014] As can be seen, in this embodiment, the network device first indicates the second modulation order for each subband via the second message. If the second modulation order in the current time unit does not match the channel quality, the network device then indicates the first modulation order for each subband via the first message. The first modulation order for each subband is determined by the network device based on the channel quality of each subband in the current time unit. Therefore, the modulation order for each subband can be adjusted via the first message, increasing the flexibility of indicating the modulation order for each subband.

[0015] In some possible implementation manners, the first message comprises an index of the first modulation order, and the second message comprises an index of the second modulation order.

[0016] It can be seen that, in the embodiment, the second modulation order can be indicated by index, and the first modulation order can be indicated by index when adjustment of the modulation order is needed, thereby increasing flexibility of indication of the modulation order.

[0017] In some possible implementation manners, the first message is used to indicate an adjustment amount of the first modulation order relative to the second modulation order, and the second message comprises an index of the second modulation order.

[0018] It can be seen that, in the embodiment, the second modulation order can be indicated by index, thereby successfully indicating the modulation order of each subband to the terminal device, and the first modulation order can be indicated by indication of the modulation amount when adjustment of the modulation order is needed, thereby increasing flexibility of indication of the modulation order.

[0019] In some possible implementation manners, the first message comprises first information used to indicate an adjustment amount of the transmission power of the at least one subband and an adjustment amount of the first modulation order relative to the second modulation order.

[0020] The first information is a TPC field in the DCI, that is, the adjustment amount of the transmission power of the at least one subband and the adjustment amount of the first modulation order relative to the second modulation order are indicated by multiplexing the existing TPC field.

[0021] It can be seen that, in the embodiment, the adjustment amount of the first modulation order relative to the second modulation order can be indicated by multiplexing the existing TPC field in the DCI, thereby reducing signaling overhead. In addition, the adjustment amount of the transmission power of each subband can also be indicated by the TPC field, so that the terminal device adjusts the transmission power to match the transmission power of each subband with the channel quality, thereby further improving transmission efficiency.

[0022] In some possible implementation manners, the first message is DCI, and the second message is an RRC message.

[0023] It can be seen that, in the embodiment, the second modulation order is indicated by RRC, thereby successfully indicating the first modulation order of each subband to the terminal device, and the modulation order is dynamically adjusted by DCI, thereby increasing flexibility of indication of the modulation order.

[0024] In a second aspect, an embodiment of the present application provides a communication method, comprising: receiving a first message from a network device; determining a first modulation order for each subband in the at least one subband based on the first message; and using the at least one subband to receive data from the network device or send data to the network device based on the first modulation order.

[0025] The first modulation order of each sub-band is determined by the network device according to the channel quality corresponding to each sub-band.

[0026] It can be seen that in the embodiment of the present application, the terminal device can successfully obtain the first modulation order of each subband according to the first message sent by the network device; the network device performs data transmission according to the first modulation order of each subband. Since the first modulation order of each subband is determined based on the channel quality of each subband, when performing data transmission, the channel fading characteristics of each subband are fully considered to meet the requirements of each subband for the modulation order, thereby improving the data transmission efficiency.

[0027] In some possible implementations, the first message includes an index of the first modulation order.

[0028] It can be seen that in this embodiment, the first modulation order of each subband is indicated by an index, thereby improving the flexibility of obtaining the first modulation order of each subband.

[0029] In some possible implementations, the first message is downlink control information DCI or radio resource control RRC message.

[0030] It can be seen that in this embodiment, the terminal device can successfully obtain the first modulation order of each subband through DCI or RRC.

[0031] In some possible implementations, before receiving the first message from the network device, the method further includes:

[0032] A second message is received from the network device, the second message being used to indicate a second modulation order for each subband in at least one subband.

[0033] As can be seen, in this embodiment, the terminal device first determines the second modulation order for each subband based on the second message sent by the network device. If the second modulation order in the current time unit does not match the channel quality, the terminal device then determines the first modulation order for each subband based on the first message sent by the network device. The first modulation order for each subband is determined by the network device based on the channel quality of each subband in the current time unit. Therefore, the modulation order of each subband is dynamically adjusted through the first message, improving the flexibility of indicating the modulation order for each subband.

[0034] In some possible implementations, the first message includes an index of the first modulation order, and the second message includes an index of the second modulation order.

[0035] It can be seen that in this embodiment, the second modulation order can be indicated by an index, and when the modulation order needs to be adjusted, the first modulation order can be indicated by an index, thereby increasing the flexibility of indicating the modulation order.

[0036] In some possible embodiments, the first message is used to indicate an adjustment amount of the first modulation order relative to the second modulation order, and the second message includes an index of the second modulation order; wherein, determining the first modulation order according to the first message includes: determining the first modulation order according to the first message and the second message.

[0037] It can be seen that in this embodiment, the second modulation order can be indicated by indexing, so as to successfully indicate the modulation order of each subband to the terminal device; and when the modulation order needs to be adjusted, the first modulation order is indicated by indicating the modulation amount, thereby increasing the flexibility of indicating the modulation order.

[0038] In some possible implementations, the first message includes first information, where the first information is used to indicate an adjustment amount of the transmit power of the at least one subband and an adjustment amount of the first modulation order relative to the second modulation order.

[0039] The first information is the TPC field in the DCI, that is, the adjustment amount of the transmit power of at least one subband and the adjustment amount of the first modulation order relative to the second modulation order are indicated by multiplexing the existing TPC field.

[0040] As can be seen, in this embodiment, the existing TPC field in the DCI can be reused to indicate the adjustment amount of the first modulation order relative to the second modulation order, thereby reducing signaling overhead. In addition, the TPC field can also be used to indicate the adjustment amount of the transmit power of each subband, allowing the terminal device to adjust the transmit power to match the transmit power of each subband with the channel quality, further improving transmission efficiency.

[0041] In some possible implementations, the first message is a DCI, and the second message is an RRC message.

[0042] It can be seen that in this embodiment, the second modulation order is indicated through RRC, so that the first modulation order of each subband is successfully indicated to the terminal device, and the modulation order is dynamically adjusted through DCI, thereby improving the flexibility of indicating the modulation order.

[0043] In a third aspect, an embodiment of the present application provides a communication method, comprising: sending a third message to a terminal device, wherein the third message is used to indicate the transmission power of each subband in at least one subband; and according to the transmission power, using the at least one subband to receive data from the terminal device or send data to the terminal device.

[0044] It can be seen that in the embodiment of the present application, the network device indicates the transmission power of each sub-band through the third message, thereby successfully indicating the transmission power of each sub-band to the terminal device; the network device transmits data with the terminal device according to the transmission power of each sub-band, and fully considers the channel fading characteristics of each sub-band when performing data transmission, meets the transmission power requirements of each sub-band, and thus improves the data transmission efficiency.

[0045] In some possible implementations, the third message includes an index value of a target transmit power of each subband in the at least one subband.

[0046] It can be seen that in this embodiment, the target transmit power of each subband can be indicated by an index value, thereby improving the flexibility of indicating the target transmit power.

[0047] In some possible implementations, the third message is used to indicate an adjustment amount of the transmit power of each subband in the at least one subband.

[0048] It can be seen that in this embodiment, the target transmit power of each subband can be indicated by indicating the adjustment amount of the transmit power of each subband through an index value, thereby improving the flexibility of indicating the target transmit power.

[0049] In some possible implementations, the third message is downlink control information DCI or radio resource control RRC message.

[0050] In a fourth aspect, an embodiment of the present application provides a communication method, comprising: receiving a third message from a network device; determining the transmission power of each subband in the at least one subband based on the third message; and using the at least one subband to receive data from the network device or send data to the network device based on the transmission power.

[0051] It can be seen that in the embodiment of the present application, the third message of the terminal device determines the transmission power of each sub-band, thereby successfully obtaining the transmission power of each sub-band; the terminal device transmits data with the network device according to the transmission power of each sub-band, and fully considers the channel fading characteristics of each sub-band when performing data transmission, meets the transmission power requirements of each sub-band, and thus improves the data transmission efficiency.

[0052] In some possible implementations, the third message includes an index value of a target transmit power of each subband in the at least one subband.

[0053] It can be seen that in this embodiment, the target transmit power of each subband can be indicated by an index value, thereby improving the flexibility of indicating the target transmit power.

[0054] In some possible implementations, the third message is used to indicate an adjustment amount of the transmit power of each subband in the at least one subband.

[0055] It can be seen that in this embodiment, the target transmit power of each subband can be indicated by indicating the adjustment amount of the transmit power of each subband through an index value, thereby improving the flexibility of indicating the target transmit power.

[0056] In some possible implementations, the third message is downlink control information DCI or radio resource control RRC message.

[0057] In a fifth aspect, an embodiment of the present application provides a network device, comprising: a transceiver unit for sending a first message to a terminal device, wherein the first message is used to indicate a first modulation order for each subband in at least one subband; and a processing unit for controlling the transceiver unit to use the at least one subband to receive data from the terminal device or send data to the terminal device according to the first modulation order.

[0058] The first modulation order of each sub-band is determined by the network device according to the channel quality corresponding to each sub-band.

[0059] As can be seen, in this embodiment of the present application, the network device can indicate the first modulation order of each subband via a first message, thereby successfully indicating the first modulation order of each subband to the terminal device; the network device then transmits data with the terminal device based on the first modulation order of each subband. Because the first modulation order of each subband is determined based on the channel quality of each subband, the channel fading characteristics of each subband are fully considered during data transmission, meeting the modulation order requirements of each subband, thereby improving data transmission efficiency.

[0060] In some possible implementations, the first message includes an index of the first modulation order.

[0061] It can be seen that in this embodiment, the first modulation order of each sub-band is indicated by an index, thereby improving the flexibility of indicating the first modulation order of each sub-band.

[0062] In some possible implementations, the first message is downlink control information DCI or radio resource control RRC message.

[0063] It can be seen that in this embodiment, the first modulation order of each subband can be indicated through a DCI or RRC message, thereby successfully indicating the first modulation order of each subband to the terminal device.

[0064] In some possible implementations, before sending the first message to the terminal device, the transceiver unit is further used to: send a second message to the terminal device, where the second message is used to indicate a second modulation order for each subband in at least one subband.

[0065] As can be seen, in this embodiment, the network device first indicates the second modulation order for each subband via the second message. If the second modulation order in the current time unit does not match the channel quality, the network device then indicates the first modulation order for each subband via the first message. The first modulation order for each subband is determined by the network device based on the channel quality of each subband in the current time unit. Therefore, the modulation order for each subband can be adjusted via the first message, increasing the flexibility of indicating the modulation order for each subband.

[0066] In some possible implementations, the first message includes an index of the first modulation order, and the second message includes an index of the second modulation order.

[0067] It can be seen that in this embodiment, the second modulation order can be indicated by an index, and when the modulation order needs to be adjusted, the first modulation order can be indicated by an index, thereby increasing the flexibility of indicating the modulation order.

[0068] In some possible implementations, the first message is used to indicate an adjustment amount of the first modulation order relative to the second modulation order, and the second message includes an index of the second modulation order.

[0069] It can be seen that in this embodiment, the second modulation order can be indicated by indexing, so as to successfully indicate the modulation order of each subband to the terminal device; and when the modulation order needs to be adjusted, the first modulation order is indicated by indicating the modulation amount, thereby increasing the flexibility of indicating the modulation order.

[0070] In some possible implementations, the first message includes first information, where the first information is used to indicate an adjustment amount of the transmit power of the at least one subband and an adjustment amount of the first modulation order relative to the second modulation order.

[0071] The first information is the TPC field in the DCI, that is, the adjustment amount of the transmit power of at least one subband and the adjustment amount of the first modulation order relative to the second modulation order are indicated by multiplexing the existing TPC field.

[0072] As can be seen, in this embodiment, the existing TPC field in the DCI can be reused to indicate the adjustment amount of the first modulation order relative to the second modulation order, thereby reducing signaling overhead. In addition, the TPC field can also be used to indicate the adjustment amount of the transmit power of each subband, allowing the terminal device to adjust the transmit power to match the transmit power of each subband with the channel quality, further improving transmission efficiency.

[0073] In some possible implementations, the first message is a DCI, and the second message is an RRC message.

[0074] It can be seen that in this embodiment, the second modulation order is indicated through RRC, so that the first modulation order of each subband is successfully indicated to the terminal device, and the modulation order is dynamically adjusted through DCI, thereby improving the flexibility of indicating the modulation order.

[0075] In a sixth aspect, an embodiment of the present application provides a terminal device, comprising: a transceiver unit for receiving a first message from a network device; a processing unit for determining a first modulation order for each subband in the at least one subband based on the first message; the processing unit is also used to control the transceiver unit to use the at least one subband to receive data from the network device or send data to the network device based on the first modulation order.

[0076] The first modulation order of each sub-band is determined by the network device according to the channel quality corresponding to each sub-band.

[0077] It can be seen that in the embodiment of the present application, the terminal device can successfully obtain the first modulation order of each subband according to the first message sent by the network device; the network device performs data transmission according to the first modulation order of each subband. Since the first modulation order of each subband is determined based on the channel quality of each subband, when performing data transmission, the channel fading characteristics of each subband are fully considered to meet the requirements of each subband for the modulation order, thereby improving the data transmission efficiency.

[0078] In some possible implementations, the first message includes an index of the first modulation order.

[0079] It can be seen that in this embodiment, the first modulation order of each subband is indicated by an index, thereby improving the flexibility of obtaining the first modulation order of each subband.

[0080] In some possible implementations, the first message is downlink control information DCI or radio resource control RRC message.

[0081] It can be seen that in this embodiment, the terminal device can successfully obtain the first modulation order of each subband through DCI or RRC.

[0082] In some possible implementations, before receiving the first message from the network device, the transceiver unit is further configured to: receive a second message from the network device, where the second message is used to indicate a second modulation order for each subband in at least one subband.

[0083] As can be seen, in this embodiment, the terminal device first determines the second modulation order for each subband based on the second message sent by the network device. If the second modulation order in the current time unit does not match the channel quality, the terminal device then determines the first modulation order for each subband based on the first message sent by the network device. The first modulation order for each subband is determined by the network device based on the channel quality of each subband in the current time unit. Therefore, the modulation order of each subband is dynamically adjusted through the first message, improving the flexibility of indicating the modulation order for each subband.

[0084] In some possible implementations, the first message includes an index of the first modulation order, and the second message includes an index of the second modulation order.

[0085] It can be seen that in this embodiment, the second modulation order can be indicated by an index, and when the modulation order needs to be adjusted, the first modulation order can be indicated by an index, thereby increasing the flexibility of indicating the modulation order.

[0086] In some possible embodiments, the first message is used to indicate the adjustment amount of the first modulation order relative to the second modulation order, and the second message includes the index of the second modulation order; in terms of determining the first modulation order based on the first message, the processing unit is specifically used to: determine the first modulation order based on the first message and the second message.

[0087] It can be seen that in this embodiment, the second modulation order can be indicated by indexing, so as to successfully indicate the modulation order of each subband to the terminal device; and when the modulation order needs to be adjusted, the first modulation order is indicated by indicating the modulation amount, thereby increasing the flexibility of indicating the modulation order.

[0088] In some possible implementations, the first message includes first information, where the first information is used to indicate an adjustment amount of the transmit power of the at least one subband and an adjustment amount of the first modulation order relative to the second modulation order.

[0089] The first information is the TPC field in the DCI, that is, the adjustment amount of the transmit power of at least one subband and the adjustment amount of the first modulation order relative to the second modulation order are indicated by multiplexing the existing TPC field.

[0090] As can be seen, in this embodiment, the existing TPC field in the DCI can be reused to indicate the adjustment amount of the first modulation order relative to the second modulation order, thereby reducing signaling overhead. In addition, the TPC field can also be used to indicate the adjustment amount of the transmit power of each subband, allowing the terminal device to adjust the transmit power to match the transmit power of each subband with the channel quality, further improving transmission efficiency.

[0091] In some possible implementations, the first message is a DCI, and the second message is an RRC message.

[0092] It can be seen that in this embodiment, the second modulation order is indicated through RRC, so that the first modulation order of each subband is successfully indicated to the terminal device, and the modulation order is dynamically adjusted through DCI, thereby improving the flexibility of indicating the modulation order.

[0093] In the seventh aspect, an embodiment of the present application provides a network device, including: a transceiver unit for sending a third message to a terminal device, wherein the third message is used to indicate the transmission power of each sub-band in at least one sub-band; and a processing unit for controlling the transceiver unit to use the at least one sub-band to receive data from the terminal device or send data to the terminal device according to the transmission power.

[0094] It can be seen that in the embodiment of the present application, the network device indicates the transmission power of each sub-band through the third message, thereby successfully indicating the transmission power of each sub-band to the terminal device; the network device transmits data with the terminal device according to the transmission power of each sub-band, and fully considers the channel fading characteristics of each sub-band when performing data transmission, meets the transmission power requirements of each sub-band, and thus improves the data transmission efficiency.

[0095] In some possible implementations, the third message includes an index value of a target transmit power of each subband in the at least one subband.

[0096] It can be seen that in this embodiment, the target transmit power of each subband can be indicated by an index value, thereby improving the flexibility of indicating the target transmit power.

[0097] In some possible implementations, the third message is used to indicate an adjustment amount of the transmit power of each subband in the at least one subband.

[0098] It can be seen that, in the embodiment, the target transmission power of each sub-band is indicated by the index value indicating the adjustment amount of the transmission power of each sub-band, so that the flexibility of indicating the target transmission power is improved.

[0099] In some possible implementation, the third message is a downlink control information (DCI) or a radio resource control (RRC) message.

[0100] In the eighth aspect, an embodiment of the present application provides a terminal device, including: a transceiver unit, configured to receive a third message from a network device; a processing unit, configured to determine a transmission power of each sub-band in the at least one sub-band according to the third message; and the processing unit is further configured to control the transceiver unit to receive data from the network device or send data to the network device using the at least one sub-band according to the transmission power.

[0101] It can be seen that, in the embodiment of the present application, the terminal device determines the transmission power of each sub-band according to the third message, so that the transmission power of each sub-band is successfully obtained; and the terminal device performs data transmission with the network device according to the transmission power of each sub-band, so that the channel fading characteristics of each sub-band are fully considered when data transmission is performed, the demand of each sub-band for the transmission power is met, and the transmission efficiency of data is improved.

[0102] In some possible implementation, the third message includes an index value of a target transmission power of each sub-band in the at least one sub-band.

[0103] It can be seen that, in the embodiment, the target transmission power of each sub-band is indicated by the index value, so that the flexibility of indicating the target transmission power is improved.

[0104] In some possible implementation, the third message is used to indicate an adjustment amount of the transmission power of each sub-band in the at least one sub-band.

[0105] It can be seen that, in the embodiment, the target transmission power of each sub-band is indicated by the index value indicating the adjustment amount of the transmission power of each sub-band, so that the flexibility of indicating the target transmission power is improved.

[0106] In some possible implementation, the third message is a downlink control information (DCI) or a radio resource control (RRC) message.

[0107] In the ninth aspect, an embodiment of the present application provides a communication apparatus, including a processor, the processor is connected with a memory, the memory is used to store a computer program, and the processor is used to execute the computer program stored in the memory, so that the apparatus executes the method in any one of the above-mentioned first aspect to fourth aspect.

[0108] In the tenth aspect, an embodiment of the present application provides a chip, comprising a processor and an interface; the processor is used to read instructions to execute the method described in any one of the embodiments of the first to fourth aspects above.

[0109] In the eleventh aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program. When the computer program is executed, it implements the method described in any one of the embodiments of the first to fourth aspects above.

[0110] In the twelfth aspect, an embodiment of the present application provides a computer program product, which includes instructions. When the instructions are executed, the method described in any one of the embodiments of the first to fourth aspects above is implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0111] Figure 1 A schematic diagram of a communication system provided in an embodiment of the present application;

[0112] Figure 2 A flow chart of a communication method provided in an embodiment of the present application;

[0113] Figure 3 A schematic diagram of sub-band division provided in an embodiment of the present application;

[0114] Figure 4 A schematic diagram of indicating a first modulation order through a bitmap provided in an embodiment of the present application;

[0115] Figure 5 A simulation diagram of transmission using the first modulation order of each subband provided in an embodiment of the present application;

[0116] Figure 6 A flowchart of another communication method provided in an embodiment of the present application;

[0117] Figure 7 A flowchart of another communication method provided in an embodiment of the present application;

[0118] Figure 8 A schematic diagram of determining the modulation order and transmit power of a subband provided in an embodiment of the present application;

[0119] Figure 9 A schematic diagram of the structure of a network device provided in an embodiment of the present application;

[0120] Figure 10 A schematic diagram of the structure of another network device provided in an embodiment of the present application;

[0121] Figure 11 A schematic diagram of the structure of a user equipment provided in an embodiment of the present application;

[0122] Figure 12 A schematic diagram of the structure of another user equipment provided in an embodiment of the present application;

[0123] Figure 13 A schematic diagram of the structure of another network device provided in an embodiment of the present application;

[0124] Figure 14 A schematic diagram of the structure of another network device provided in an embodiment of the present application;

[0125] Figure 15 A schematic diagram of the structure of another user equipment provided in an embodiment of the present application;

[0126] Figure 16 A schematic diagram of the structure of another user equipment provided in an embodiment of the present application;

[0127] Figure 17 A schematic diagram of the structure of a chip provided in an embodiment of the present application. DETAILED DESCRIPTION

[0128] The technical solutions of the embodiments of the present application can be applied to the Long Term Evolution (LTE) architecture, as well as to the Universal Mobile Telecommunications System (UMTS) terrestrial radio access network (UTRAN) architecture, or the Global System for Mobile Communication (GSM), the Enhanced Data Rate for GSM Evolution (EDGE) system radio access network (GSM EDGE Radio Access Network, GERAN) architecture, the New Radio NR (NR) architecture, and even architectures after 5G.

[0129] The terminal device involved in the embodiments of the present application may be, for example, a user equipment (UE). The UE may be a device that provides voice and / or data connectivity to a user, and may include, for example, a handheld device with wireless connectivity or a processing device connected to a wireless modem. The UE may communicate with a core network via a radio access network (RAN) and exchange voice and / or data with the RAN. UE may include wireless user equipment, mobile user equipment, device-to-device (D2D) user equipment, vehicle-to-everything (V2X) user equipment, machine-to-machine / machine-type communications (M2M / MTC) user equipment, Internet of Things (IoT) user equipment, subscriber unit, subscriber station, mobile station, remote station, access point (AP), remote terminal, access terminal, user terminal, user agent, or user equipment, etc. For example, it may include a mobile phone (also known as a "cellular" phone), a computer with a mobile user equipment, a portable, pocket-sized, handheld, or computer-built-in mobile device, etc. Examples include personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), and other devices. Also included are limited devices, such as those with low power consumption, limited storage capacity, or limited computing power. Examples include information sensing devices such as barcode scanners, radio frequency identification (RFID), sensors, global positioning systems (GPS), and laser scanners.

[0130] As an example and not a limitation, in the embodiment of the present application, the UE may also be a wearable device. Wearable devices may also be referred to as wearable smart devices or smart wearable devices, etc., which are a general term for the application of wearable technology to intelligently design and develop wearable devices for daily wear, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-sized, and independent of smartphones to achieve complete or partial functions, such as smart watches or smart glasses, etc., as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various smart bracelets, smart helmets, smart jewelry, etc. for vital sign monitoring.

[0131] The various UEs introduced above, if located on a vehicle (for example, placed in a vehicle or installed in a vehicle), can be considered as on-board user equipment. For example, on-board user equipment is also called an on-board unit (OBU), which is not limited in this embodiment of the present application.

[0132] The embodiments of the present application also relate to network devices, such as access network (AN) devices. The AN device may refer to a device in the access network that communicates with a wireless user equipment through one or more cells over the air interface, such as a base station NodeB (e.g., an access point). The NodeB may be used to convert received air frames into and from Internet Protocol (IP) packets, acting as a router between the UE and the rest of the access network, wherein the rest of the access network may include an IP network. For example, the NodeB may be an evolved base station (NodeB or eNB or e-NodeB, evolutionary Node B) in a long term evolution (LTE) system or an advanced long term evolution (LTE-A), or may also include a new air interface network device gNB in ​​a fifth generation mobile communication technology (5G) NR system. The AN device may also be an access network device in a vehicle to everything (V2X) technology, such as a road side unit (RSU). The RSU may be a fixed infrastructure entity that supports V2X applications and may exchange messages with other entities that support V2X applications. In addition, the AN device may also include a centralized unit (CU) and a distributed unit (DU) in a cloud radio access network (CloudRAN) system, in which case the AN device coordinates the attribute management of the air interface. The embodiments of the present application do not limit the AN device.

[0133] In order to facilitate understanding of this application, the relevant technical knowledge involved in the embodiments of this application is first introduced here.

[0134] In the current NR, channels can be divided into control channels and data channels according to their functions. Control channels are used to carry control information, and data channels are used to carry data information. According to the transmission direction of the link between the base station and the terminal device, it can be divided into uplink transmission and downlink transmission. It is stipulated that transmission from the base station and reception by the terminal device is downlink transmission; transmission from the terminal device and reception by the base station is uplink transmission. Therefore, the corresponding channels include the Physical Uplink Shared Channel (PUSCH), Physical Uplink Control Channel (PUCCH), Physical Downlink Shared Channel (PDSCH), Physical Downlink Control Channel (PDCCH), Physical Broadcast Channel (PBCH) and Physical Random Access Channel (PRACH).

[0135] Taking uplink transmission as an example, the data transmission process on any channel is as follows:

[0136] The terminal device performs channel coding and rate matching on the uplink data to obtain a redundant version (RV); the terminal device modulates the RV to obtain multiple complex signals, then loads the multiple complex signals on subcarriers and transmits them to the base station through the antenna; the base station receives the complex signals after channel fading through the antenna; the base station demodulates the received complex signal to obtain the RV, and performs corresponding channel decoding on the RV to obtain the uplink data.

[0137] Currently, common modulation methods in NR systems include Quadrature Phase Shift Keying (QPSK), 16-order Quadrature Amplitude Modulation (QAM), 64QAM, and even higher 256QAM, with corresponding modulation orders of 2, 4, 6, and 8, respectively. The modulation order refers to the ability of each complex signal to carry 2 bits, 4 bits, 6 bits, and 8 bits of information. Therefore, the higher the modulation order, the more bits a complex signal carries, and the higher the transmission efficiency. However, in a fading channel, affected by noise and signal fading, the higher the modulation order, the more difficult it is for the receiver to correctly demodulate the received complex signal, and the higher the bit error rate.

[0138] In order to balance the relationship between transmission efficiency and bit error rate, the NR system supports adaptive modulation and coding (AMC). That is, according to the changes in channel quality, the modulation order of different time units is adjusted. For example, the downlink transmission of the current time unit adopts QPSK modulation, but after the base station knows the downlink channel quality, it determines that a higher modulation order can be used. In the downlink transmission of the next time unit, a higher modulation order is adopted for downlink transmission. For example, 16QAM or 64QAM is used for downlink transmission. Through adaptive modulation, the highest transmission efficiency can be achieved when the bit error rate is small (for example: bit error rate = 10%).

[0139] Furthermore, during link transmission between base stations and terminal devices, the received signal power may be significantly lower than the transmitted signal power due to wireless channel fading, including path loss due to transmission distance, signal penetration loss when passing through obstacles, and energy dissipation due to refraction and diffraction. To ensure that the lower-power signal can be received by the receiver after fading, the received signal is typically required to be greater than the receiver's sensitivity, meaning that the received signal power must be greater than the minimum required power. Therefore, the transmitter typically transmits at a higher transmit power so that the receiver can still successfully receive the signal after experiencing channel fading.

[0140] Taking uplink transmission as an example, the base station will receive uplink signals sent by multiple terminal devices at the same time. The signal power of the terminal device close to the base station reaching the base station may be relatively large, and the signal power of the terminal device far away from the base station reaching the base station may be relatively small, resulting in greater interference to the distant terminal device (terminal device far away from the base station), and the signal cannot be accurately demodulated and decoded, making it impossible for the distant terminal device to communicate normally. Therefore, the base station will comprehensively consider the interference between multiple terminal devices, appropriately reduce the transmission power of the near terminal device (terminal device close to the base station), and increase the transmission power of the distant terminal device. Among them, the adjustment of the transmission power of the terminal device is mainly carried out through open-loop and closed-loop methods, and the method of adjusting the transmission power through open-loop and closed-loop can be expressed by formula (1):

[0141]

[0142] The open-loop operating point includes P0(j), α(j) and PL(p), where j is an index value. The terminal device selects P0(j) from a set of configured P0 values ​​based on the index value j. The selected P0(j) is related to the target signal to interference and noise ratio (SINR) expected by the base station side. The larger the selected P0(j), the greater the transmit power of the terminal device and the higher the SINR received by the base station.

[0143] PL(p) is a path loss estimate, which is autonomously selected by the terminal device from a set of path loss values maintained by the terminal device, and is determined by the terminal device based on a Channel State Information Reference Signal (CSI-RS) or a Synchronization Signal and PBCH Block (SSB) in the downlink. For example, a terminal device in a connected state is configured with a UE-specific CSI-RS, and can determine the path loss estimate based on the CSI-RS. A terminal device not configured with a UE-specific CSI-RS can determine the path loss estimate based on an SSB.

[0144] α(j) is a path loss compensation factor, and has a value between 0 and 1. j is an index value, which is usually the same as the index of P0(j). α(j) is selected from a set of α values configured based on the index value j. When α(j) = 1, full path loss compensation is performed. When α(j) = 0, no path loss compensation is performed. When α(j) is between 0 and 1, partial path loss compensation is performed.

[0145] The closed loop offset f(l) is a state value of a power control offset, and is used to adjust the transmission power of the terminal device. f(l) is indicated by DCI. For example, when the base station finds that the transmission power of the terminal device is too high, the base station can indicate the terminal device to adjust the transmission power based on f(l) by using a Transmission Power Control (TPC) command in DCI when scheduling the next transmission of the same type. f(l) is determined by tpc-Accumulation and the value δ(l) of the TPC command.

[0146] Specifically, if tpc-Accumulation is not enabled, f(l) = δ(l). If tpc-Accumulation is enabled, f(l) = f(l-1) + δ(l).

[0147] In formula (1), the other adjustment amount corresponds to a subcarrier spacing of 15 KHz. M represents the number of frequency domain resource units occupied by this uplink transmission. The frequency domain resource unit can be a Physical Resource Block (PRB). If the numerology is different, the other adjustment amount is {10lg(2 u*M)+Δ}, where u takes values ​​of 0, 1, 2, 3, and 4, corresponding to subcarrier spacings of 15 kHz, 30 kHz, 60 kHz, 120 kHz, and 240 kHz, respectively; Δ represents an adjustment associated with the transmission format (i.e., the Modulation and Coding Scheme (MCS)) of this uplink transmission.

[0148] Although AMC transmission is supported in the NR system. However, it is necessary to use the same modulation order on all scheduled subcarriers, that is, the same modulation order is used for modulation on the entire transmission block (TB), and then mapped to the physical resource block (PRB) for transmission. In addition, after determining the transmission power, the same transmit power is used for data transmission on all scheduled subcarriers. However, there is frequency-selective fading between subcarriers, and different subcarriers have different channel fading characteristics. Therefore, using the same modulation order and the same transmit power for all subcarriers for data transmission cannot adapt to the channel fading characteristics between subcarriers, resulting in low transmission efficiency.

[0149] See Figure 1 , Figure 1 A schematic diagram of a communication system provided in an embodiment of the present application. The communication system 10 includes a terminal device 100 and a network device 200.

[0150] In some possible implementations, based on Figure 1 In the communication system shown, the network device 200 sends a first message to the terminal device 100, where the first message is used to indicate the first modulation order of each subband in at least one subband; the terminal device 100 determines the first modulation order of each subband in the at least one subband based on the first message; and the network device 200 receives data from the terminal device 100 or sends data to the terminal device 100 using the at least one subband based on the first modulation order.

[0151] As can be seen, in this embodiment of the present application, the network device indicates the modulation order of each subband via the first message, thereby successfully indicating the modulation order of each subband to the terminal device. Therefore, data transmission between the network device and the terminal device can be carried out based on the first modulation order of each subband. By fully considering the channel fading characteristics of each subband, the modulation order requirements of each subband are met, thereby improving data transmission efficiency.

[0152] In some possible implementations, based on Figure 1In the communication system shown, the network device 200 sends a third message to the terminal device, where the third message is used to indicate the transmission power of each subband in at least one subband; the terminal device 100 determines the transmission power based on the third message; and the network device 200 uses the at least one subband to receive data from the terminal device 100 or send data to the terminal device 100 based on the transmission power.

[0153] As can be seen, in this embodiment of the present application, the network device indicates the transmit power for each subband via the third message, thereby successfully indicating the transmit power for each subband to the terminal device. Therefore, data transmission between the network device and the terminal device can be performed based on the transmit power of each subband. By fully considering the channel fading characteristics of each subband, the transmit power requirements of each subband are met, thereby improving data transmission efficiency.

[0154] See Figure 2 , Figure 2 This is a flow chart of a communication method provided in an embodiment of the present application. The method in this embodiment includes the following steps:

[0155] 201: The network device sends a first message to the terminal device, where the first message is used to indicate a first modulation order of each subband in at least one subband.

[0156] The at least one sub-band is obtained by dividing the scheduled frequency domain resources by the network device.

[0157] Specifically, if the scheduled frequency domain resources are continuously scheduled, the subband division method includes: the scheduled frequency domain resources can be evenly divided according to the granularity of the subband to obtain at least one subband, and each subband contains the same number of frequency domain resource units (the number of frequency domain resource units of the last subband may be different from that of other subbands), and the frequency domain resource unit can be a physical resource block (PRB). The granularity of the subband can be a predefined value in the user equipment or configured by the network device through signaling. For example, the network device is configured through RRC signaling or DCI.

[0158] like Figure 3 As shown in FIG, three frequency domain resource units are used as the granularity of a subband. Therefore, starting from the first frequency domain resource unit, three adjacent frequency domain resource units are used as a subband.

[0159] Specifically, if the scheduled frequency domain resource units are discretely scheduled, the subband division method includes: starting from the first frequency domain resource unit, if two adjacent frequency domain resource units in the scheduled frequency domain resource units are separated by m or more than m unscheduled frequency domain resource units, then the two adjacent frequency domain resource units are divided as two different subbands to obtain at least one subband, where m is an integer greater than or equal to 1. Therefore, the number of frequency domain resource units contained in any two subbands is the same or different, wherein the value of m can be a predefined value in the user equipment, or can be configured by the network device through signaling. For example, the network device configures it through RRC signaling or DCI.

[0160] like Figure 3 As shown in the figure, the gray portion represents the discretely scheduled frequency domain resource units. Starting from the first frequency domain resource unit, the interval m is 2. If adjacent frequency domain resource units within the scheduled frequency domain resource units are not scheduled and are separated by two or more frequency domain resource units, then these adjacent frequency domain resource units belong to two subbands. Therefore, subband 1 and subband n each include two frequency domain resource units, while subband 2 includes one frequency domain resource unit.

[0161] It should be noted that in the embodiment of the present application, each frequency domain resource unit includes the same number of subcarriers, and the channel fading characteristics of all subcarriers in each subband are the same.

[0162] The modulation order for each subband is determined by the network device based on channel quality. The network device measures the channel quality for each subband based on the Sounding Reference Signal (SRS) sent by the terminal device, taking into account the terminal device's target transmission rate and any interference from other devices on its data transmission. This determines the first modulation order for each subband.

[0163] The first message includes an index of the first modulation order of each subband, indicating the first modulation order of each subband by the index. For example, the index can be 00, 01, 10, or 11, etc., where 00 indicates a modulation order of 2, 01 indicates a modulation order of 4, 10 indicates a modulation order of 6, and 11 indicates a modulation order of 8.

[0164] The first message may be a DCI or an RRC message.

[0165] Exemplarily, when the first message is DCI, the first modulation order of each subband can be indicated by a newly added field in the DCI, that is, the index of the first modulation order of each subband is set by the newly added field, wherein the newly added field is obtained by expanding the field of the existing DCI, and the existing DCI is the DCI specified by the existing communication protocol 38.212f20.

[0166] For example, when the first message is a DCI, the first modulation order of each subband can also be indicated by an existing field in the DCI, that is, the modulation order of each subband can be implicitly indicated by an existing field in the DCI. For example, the two bits of the TPC indication for each subband during subband power control can be used to implicitly indicate the modulation order adjustment amount for each subband according to a predefined correspondence.

[0167] For example, the first modulation order of each subband can be indicated by a bit. The network device can determine the length of the field that needs to be expanded in the DCI according to the number of at least one subband, and indicate the first modulation order of each subband in a bitmap manner, that is, the first modulation order of each subband is indicated by the corresponding bit position of each subband in the bitmap. For example, if a total of 10 subbands are divided and each subband is indicated by 2 bits, 20 bits can be added to indicate the modulation order of each subband. Figure 4 As shown, the first two bits in the bitmap are used to indicate the first modulation order of sub-band 1. If the index values ​​corresponding to the first two bits are 01 respectively, it indicates that the first modulation order of sub-band 1 is 4.

[0168] When the first message is an RRC message, the RRC message includes an index of the first modulation order of each subband. Similarly, the index of the first modulation order of each subband can be set in the RRC message via a bitmap, and the first modulation order of each subband is indicated by the index of the first modulation order of each subband.

[0169] Of course, the first modulation order of each subband may also be directly indicated in the RRC message, that is, the RRC message includes the value corresponding to the first modulation order of each subband.

[0170] 202: The terminal device determines a first modulation order for each subband in the at least one subband according to the first message.

[0171] The terminal device parses the first message to determine the first modulation order of each subband. For example, if the first message includes an index of the first modulation order of each subband, the terminal device parses the first message to obtain the index of the first modulation order of each subband, and determines the first modulation order of each subband based on the correspondence between the index and the modulation order. For another example, if the first message includes a value corresponding to the first modulation order of each subband, the terminal device parses the first message to directly obtain the first modulation order of each subband.

[0172] 203: The terminal device receives data from the network device or sends data to the network device using the at least one sub-band according to the first modulation order of each sub-band.

[0173] The terminal device sends data to the network device based on the at least one subband, i.e., the terminal device performs uplink transmission. In addition, during the uplink transmission, the terminal device needs to calculate the transmission block size (TBS) based on the transmission code rate. Therefore, in addition to indicating the first modulation order of each subband to the terminal device, the network device also needs to indicate the transmission code rate. The transmission code rate can be indicated by the first message or by other messages. This application does not limit this.

[0174] The terminal device determines the TBS based on the first modulation order and transmission code rate of each subband; performs channel coding on the uplink data according to the TBS to obtain a bit string; performs rate matching on the bit string to obtain an RV; modulates the RV according to the first modulation order of each subband to obtain the uplink data carried on each subband, and then uses the at least one subband to send the uplink data carried on each subband to the network device.

[0175] For example, the frequency domain resource unit can be a PRB, if the number of subbands is 10, each subband contains 2 PRBs, each PRB includes 12 subcarriers and 14 time domain symbols, assuming that the modulation order of the 10 subbands is {2, 2, 2, 2, 2, 4, 4, 4, 4, 4}, the total number of bits carried by the 10 subbands is (2+2+2+2+2+4+4+4+4+4)*12*14*2=10080bit. Assuming that the transmission code rate is 120 / 1024, the initial TBS=10080*120 / 1024=1181.25, the terminal device will select a value closest to the initial TBS (1181.25) from the TBS table specified in NR 38.214, and the value is not less than the initial TBS, as the final TBS. According to the TBS table, the final TBS is determined to be 1192. That is, in the case of a given code rate of 120 / 1024 and modulation order of 10 subbands of {2, 2, 2, 2, 2, 4, 4, 4, 4, 4}, the frequency domain resource scheduled by the network device can carry 1192 effective bits.

[0176] After determining the final TBS, the terminal device performs channel coding on the data to be transmitted to obtain a bit string. For example, when transmitting data on the uplink shared channel PUSCH, low density parity check (LDPC) coding is used to obtain a bit string.

[0177] Since the code rate of LDPC coding is 1 / 5, in the case of TBS=1192, after LDPC coding, a bit string with a bit length of 5960 is obtained. The terminal device performs rate matching on the bit string, that is, selects part of the bits from the bit string to obtain RV (i.e., selects 10080 bits); modulates the RV according to the first modulation order of each subband, and divides the modulated bits according to the number of bits carried by each subband to obtain uplink data carried by each subband. Finally, the terminal device transmits the uplink data carried by each subband to the network device using the at least one subband.

[0178] Among them, the terminal device receives data from the network device according to the at least one subband, that is, the process of the terminal device performing downlink data transmission. Therefore, the first message is also used to instruct the terminal device to demodulate the downlink data sent by the network device according to the first modulation order of each subband.

[0179] It can be seen that in the embodiment of the present application, the network device indicates the first modulation order of each subband through the first message, thereby successfully indicating the first modulation order of each subband to the terminal device; therefore, data can be transmitted between the network device and the terminal device according to the first modulation order of each subband, and the first modulation order of each subband is determined according to the channel quality of each subband. Therefore, during the data transmission process, the channel fading characteristics of each subband are fully considered, the requirements of each subband for the modulation order are met, and the data transmission efficiency is improved.

[0180] See Figure 5 , Figure 5 FIG. 1 is a schematic diagram of simulating the modulation process under the condition of ideal channel estimation (i.e., the simulation parameters are 2T4R). Figure 5 It can be seen that the transmission rate of the method of modulating using the first modulation order of each subband is higher than the method of modulating the entire bandwidth; moreover, when the SNR is slightly higher, a significant performance gain can be obtained compared to modulating the entire bandwidth.

[0181] When using RRC messages to indicate the modulation order of a subband, due to the high RRC signaling delay, the RRC message sent by the network device in the current time unit may not be sent to the terminal device until one or several time units have passed, which means that the second modulation order indicated by the network device through the RRC message cannot be indicated to the terminal device in real time. Relatively speaking, the RRC message received by the terminal device in the current time unit may be the RRC message sent by the network device in the previous one or several time units. Therefore, the second modulation of each subband determined by the terminal device based on the RRC is actually determined by the network device based on the channel quality in the previous one or several time units. However, the channel quality is always in a dynamic change process, and the channel quality in the current time unit may be different from the channel quality in the previous one or several time units. Therefore, if the terminal device uses the second modulation order for data transmission, it cannot adapt to the current channel quality. In order to solve the delay problem of RRC signaling, the following solution is proposed.

[0182] See Figure 6 , Figure 6 A flow chart of another communication method provided in an embodiment of the present application. Figure 2 The same contents as those in the embodiment shown are not described again here. The method of this embodiment includes the following steps:

[0183] 601: The network device sends a second message to the terminal device, where the second message is used to indicate a second modulation order of each subband in at least one subband.

[0184] The second message is an RRC message, and includes the second modulation order of each subband in at least one subband. The second message includes an index of the second modulation order of each subband; or a value corresponding to the second modulation order of each subband.

[0185] 602: The network device sends a first message to the terminal device, where the first message is used to indicate a first modulation order of each subband in at least one subband.

[0186] The first message may be DCI.

[0187] The first modulation order of each subband is determined by the network device based on the channel quality in the current time unit, while the second modulation order of each subband is determined by the network device based on the channel quality in the previous time unit or units. Therefore, if the first modulation order and the second modulation order of a subband are different, the first modulation order of each subband in at least one subband is indicated in the first message.

[0188] Specifically, if there is at least one subband whose first modulation order is inconsistent with the second modulation order of the subband; or the number of subbands whose first modulation order is inconsistent with the second modulation order is greater than a threshold relative to the at least one subband, it is determined that the first modulation order and the second modulation order of the subband are different, that is, the second modulation order indicated by the second message does not match the channel quality in the current time unit, and the modulation order of the at least one subband needs to be re-indicated.

[0189] Because DCI signaling has low latency, DCI transmission can be considered real-time. Therefore, if the second modulation order indicated by the second message does not match the channel quality, the network device re-instructs the terminal device via DCI to use the first modulation order for each subband, accurately matching the channel quality and thus improving transmission efficiency.

[0190] Optionally, the first message includes an index of the first modulation order, that is, directly indicating the first modulation order of each subband by means of an index; or, the first message includes an adjustment amount of the first modulation order relative to the second modulation order, that is, indirectly indicating the first modulation order of each subband by means of an adjustment amount, and the terminal device adjusts the second modulation order according to the adjustment amount of each subband to obtain the first modulation order of each subband.

[0191] Optionally, the adjustment amount of the first modulation order of each subband relative to the second modulation order can be to adjust the second modulation order of each subband to an adjacent modulation order, i.e., to increase or decrease the second modulation order by one modulation order. Alternatively, it can indicate the number of modulation orders to adjust. For example, 00 indicates increasing the modulation order by one, and 11 indicates increasing the modulation order by two. This application does not limit the manner in which the adjustment amount is made.

[0192] The indication of the adjustment amount of the first modulation order relative to the second modulation order of each sub-band can also be implemented by a bitmap, which will not be described again.

[0193] Furthermore, the modulation order of a subband is related to the transmit power. Therefore, the first information can also be used to indicate an adjustment amount for the transmit power of each subband in the at least one subband, implicitly indicating an adjustment amount for the second modulation order of each subband through the adjustment amount for the transmit power of each subband.

[0194] For example, if the first information is used to indicate an increase in the transmission power of a subband, the modulation order of the subband can be increased by one level, that is, the second modulation order of the subband can be increased by one modulation order. For example, if the second modulation order is 2, the modulation order of the subband is adjusted to 4; if the first information is used to indicate a reduction in the transmission power of a subband, the modulation order of the subband can be reduced by one level, that is, the second modulation order of the subband can be reduced by one modulation order. For example, if the second modulation order is 4, the modulation order of the subband is adjusted to 2.

[0195] In a possible embodiment, when the first message includes an adjustment amount of the first modulation order relative to the second modulation order, the first message includes first information, and the first information is used to indicate the adjustment amount of the first modulation order of each subband relative to the second modulation order.

[0196] Optionally, the first information may be a TPC field in the DCI, which indicates an adjustment amount of the first modulation order relative to the second modulation order. For example, if the value of the TPC field is a positive number, it indicates that the adjustment amount of the first modulation order relative to the second modulation order is to increase the modulation order by one modulation order. If the second modulation order is 4, the second modulation order needs to be adjusted to 6. If the value of the TPC field is a negative number, it indicates that the adjustment amount of the first modulation order relative to the second modulation order is to decrease the second modulation order by one modulation order. If the second modulation order is 4, the second modulation order needs to be adjusted to 2.

[0197] In practical applications, a mapping relationship between the adjustment amount and the TPC field value can be set; based on the TPC field value and this mapping relationship, the adjustment amount of the first modulation order relative to the second modulation order is indicated. For example, if the TPC field value is greater than a first threshold but less than a second threshold, the second modulation order is increased by one modulation level; if the TPC field value is greater than the second threshold but less than a third threshold, the second modulation order is increased by two modulation levels; if the TPC field value is greater than the third threshold, the second modulation order is adjusted to the highest modulation level.

[0198] The network device may further indicate the adjustment amount of the transmit power of each subband through the TPC field. The implementation method of indicating the adjustment amount of the transmit power of each subband will be described in detail later and will not be described in detail here.

[0199] It can be understood that if the first modulation order of each subband determined within the current time unit is consistent with the second modulation order indicated by the second message, there is no need to perform step 602, that is, there is no need to send a first message to the terminal device to indicate the first modulation order of each subband.

[0200] It should be noted that the aforementioned indication of the first modulation order for each subband may be a re-indication of the first modulation order for all or some of the subbands within the at least one subband. Specifically, within the current time unit, the channel quality of not all subbands may not match the channel quality within the previous time unit or several previous time units. Therefore, the second modulation order of only some subbands may be inconsistent with the first modulation order, that is, only the modulation order of some subbands needs to be changed. Therefore, the first modulation order of these subbands can be indicated via a first message. In this case, the first message includes the index of the first modulation order of the subband or the adjustment amount of the first modulation order of these subbands relative to the second modulation order. Of course, even if the second modulation order of only some subbands requires adjustment, the first modulation order of all subbands can be indicated. For subbands that require modulation, the original modulation order continues to be indicated or the adjustment amount is indicated to be zero.

[0201] 603: The terminal device determines a first modulation order for each subband in the at least one subband according to the first message.

[0202] Optionally, if the first message includes an index of the first modulation order for each subband, the terminal device determines the first modulation order for each subband based on the index. Optionally, if the first message includes an adjustment amount for the first modulation order relative to the second modulation order, the second modulation order for each subband is adjusted based on the adjustment amount to obtain the first modulation order for each subband. The specific method to be used is pre-agreed upon by the terminal device and the network device.

[0203] 604: The terminal device receives data from the network device or sends data to the network device using the at least one sub-band according to the first modulation order.

[0204] It can be seen that in an embodiment of the present application, the network device indicates the second modulation order of each subband through an RRC message, and when it is determined that the second modulation order matches the channel quality during data transmission, the modulation order of each subband is re-indicated as the first modulation order through a DCI message, thereby successfully indicating the first modulation order of each subband to the terminal device and improving the flexibility of indicating the modulation order of each subband; in addition, data is transmitted between the network device and the terminal device according to the first modulation order of each subband, and the first modulation order of each subband is determined according to the channel quality of each subband, so that when data is transmitted, the channel fading characteristics of each subband are fully considered, the requirements of each subband for the modulation order are met, and the data transmission efficiency is improved.

[0205] See Figure 7 , Figure 7 A flow chart of a communication method provided in an embodiment of the present application. Figure 2 and Figure 6 The same contents as those in the embodiment shown are not described again here. The method of this embodiment includes the following steps:

[0206] 701: The network device sends a third message to the terminal device, where the third message is used to indicate the transmit power of each subband in at least one subband.

[0207] Optionally, the third message includes an index of the target transmit power of each subband in at least one subband, that is, directly indicating the index j of P0(j), that is, directly indicating the target transmit power currently required to be used by the terminal device through the index.

[0208] Optionally, the third message includes an adjustment amount for the transmit power of each subband, where the adjustment amount includes an absolute adjustment amount or a relative adjustment amount. The terminal device may determine a power state offset value based on the adjustment amount and adjust the transmit power based on the power state offset value.

[0209] Specifically, if tpc-accumulation is disabled, the state offset value f(l) for determining the transmit power of each subband is the adjustment value δ(l) (absolute adjustment value). This means that the adjustment value for the transmit power of each subband is directly applied to the transmit power of each subband to adjust the transmit power of each subband. If tpc-accumulation is enabled, the state offset value f(l) for determining the transmit power of each subband needs to be determined in combination with the transmit power of the previous data transmission and the adjustment value δ(l), i.e., f(l) = f(l-1) + δ(l). In this case, the transmit power needs to be adjusted using f(l).

[0210] Similarly, the index value indicating the target transmit power of each subband or the adjustment amount of the transmit power of each subband can also be implemented in a bitmap manner, which will not be described again.

[0211] The third message is a DCI or RRC message.

[0212] 702: The network device receives data from the terminal device or sends data to the terminal device using at least one sub-band according to the transmit power.

[0213] During uplink transmission, the network device uses the at least one sub-band to receive uplink data sent by the terminal device, and the uplink data is sent by the terminal device according to the transmission power of each sub-band; in downlink transmission, the network device sends data to the terminal device according to the transmission power of each sub-band.

[0214] It can be seen that in the embodiment of the present application, the network device indicates the transmission power of each sub-band through the third message, thereby successfully indicating the transmission power of each sub-band to the terminal device; data transmission is performed between the network device and the terminal device according to the transmission power of each sub-band, and when performing data transmission, the channel fading characteristics of each sub-band are fully considered to meet the transmission power requirements of each sub-band, thereby improving data transmission efficiency.

[0215] See Figure 8 , Figure 8 This is a flow chart of a method for determining the modulation order and transmit power provided in an embodiment of the present application. The method in this embodiment includes the following steps:

[0216] 801: The network device determines a power difference for each subband according to the second modulation order of each subband in at least one subband and a second transmit power allocated to each subband, and obtains a total remaining power according to the power difference for each subband.

[0217] The second modulation order of each sub-band is the modulation order of each sub-band when the terminal device used each sub-band for data transmission last time.

[0218] The network device determines the first modulation order to be used for each subband based on the current channel quality. The network device determines the first transmit power to be used for each subband based on the first modulation order to be used for each subband. The network device determines the power difference for each subband based on the second transmit power allocated for each subband (i.e., the initial transmit power allocated by the network device to each subband) and the first transmit power to be used for each subband. A power difference matrix is ​​generated based on the power difference for each subband. All elements of the power difference matrix are summed to obtain the total remaining power for the at least one subband.

[0219] 802: The network device determines the first transmit power and the first modulation order of each subband according to the second modulation order of each subband and the total residual power.

[0220] The network device determines a target subband among the at least one subband, and determines a first transmit power and a first modulation order of the target subband based on the total residual power, wherein the target subband is a subband among the at least one subband whose power difference is closest to the total residual power.

[0221] Specifically, after the network device determines the target subband, it sets the modulation order of the target subband to the first modulation order, and allocates the power difference required for the target subband from the total remaining power so that the transmission power of the target subband is the first transmission power, thereby obtaining the remaining total power; then, based on the remaining total power, the above-mentioned modulation order setting and power allocation process is repeated for all subbands in the at least one subband except the target subband, thereby obtaining the first transmission power and the first modulation order of each subband.

[0222] It can be seen that in the embodiment of the present application, the network device determines the first modulation order and transmission power of each sub-band according to the channel fading corresponding to each sub-band, so as to meet the requirements for the modulation order and transmission power at the granularity of the sub-band. Therefore, when using the first modulation order and transmission power of each sub-band to transmit data with the terminal device, the channel fading characteristics of each sub-band are taken into account, thereby improving the data transmission efficiency.

[0223] See Figure 9 , Figure 9 This is a schematic diagram of the structure of a network device provided in an embodiment of the present application. The network device 900 includes a processing unit 901 and a transceiver unit 902; wherein:

[0224] The transceiver unit 902 is configured to send a first message to a terminal device, where the first message is used to indicate a first modulation order of each subband in at least one subband;

[0225] The processing unit 901 is used to control the transceiver unit to use the at least one sub-band to receive data from the terminal device or send data to the terminal device according to the first modulation order.

[0226] In some possible implementations, the first message includes an index of the first modulation order.

[0227] In some possible implementations, the first message is downlink control information DCI or radio resource control RRC message.

[0228] In some possible implementations, before sending the first message to the terminal device, the transceiver unit 902 is further configured to:

[0229] A second message is sent to the terminal device, where the second message is used to indicate a second modulation order for each subband in at least one subband.

[0230] In some possible implementations, the first message includes an index of the first modulation order, and the second message includes an index of the second modulation order.

[0231] In some possible implementations, the first message is used to indicate an adjustment amount of the first modulation order relative to the second modulation order, and the second message includes an index of the second modulation order.

[0232] In some possible implementations, the first message includes first information, where the first information is used to indicate an adjustment amount of the transmit power of the at least one subband and an adjustment amount of the first modulation order relative to the second modulation order.

[0233] In some possible implementations, the first message is a DCI, and the second message is an RRC message.

[0234] See Figure 10 , Figure 10 This is a schematic diagram of the structure of a network device provided in an embodiment of the present application. Network device 1000 includes memory 1001, processor 1002, and transceiver 1003. These are connected via bus 1004. Memory 1001 is used to store relevant instructions and data and can transmit the stored data to processor 1002.

[0235] The processor 1002 is configured to read the relevant instructions in the memory 1001 and perform the following operations:

[0236] Controlling the transceiver 1003 to send a first message to the terminal device, where the first message is used to indicate a first modulation order of each subband in the at least one subband;

[0237] According to the first modulation order, the transceiver 1003 is controlled to use the at least one sub-band to receive data from the terminal device or to send data to the terminal device.

[0238] Specifically, the processor 1002 may be Figure 9 The processing unit 901 of the network device 900 of the embodiment shown, the transceiver 1003 may be Figure 9 The transceiver unit 902 of the network device 900 of the embodiment described.

[0239] See Figure 11 , Figure 11A structural schematic diagram of a user equipment is provided for an embodiment of the present application. The user equipment 1100 comprises a processing unit 1101 and a transceiver unit 1102; wherein:

[0240] The transceiver unit 1102 is configured to receive a first message from a network device;

[0241] The processing unit 1101 is configured to determine a first modulation order of each of the at least one sub-band according to the first message.

[0242] The processing unit 1101 is further configured to control the transceiver unit 1102 to receive data from the network device or send data to the network device using the at least one sub-band according to the first modulation order.

[0243] In some possible implementation manners, the first message comprises an index of the first modulation order.

[0244] In some possible implementation manners, the first message is a downlink control information (DCI) or a radio resource control (RRC) message.

[0245] In some possible implementation manners, before receiving the first message from the network device, the transceiver unit 1101 is further configured to:

[0246] receive a second message from the network device, wherein the second message is used to indicate a second modulation order of each of the at least one sub-band.

[0247] In some possible implementation manners, the first message comprises an index of the first modulation order, and the second message comprises an index of the second modulation order.

[0248] In some possible implementation manners, the first message is used to indicate an adjustment amount of the first modulation order relative to the second modulation order, and the second message comprises an index of the second modulation order.

[0249] In the aspect of determining the first modulation order according to the first message, the processing unit 1102 is specifically configured to:

[0250] determine the first modulation order according to the first message and the second message.

[0251] In some possible implementation manners, the first message comprises first information, wherein the first information is used to indicate an adjustment amount of a transmission power of the at least one sub-band and an adjustment amount of the first modulation order relative to the second modulation order.

[0252] In some possible implementation manners, the first message is a DCI, and the second message is an RRC message.

[0253] Referring to Figure 12 , Figure 12 A structural schematic diagram of a user equipment is provided for the embodiments of the present application. The user equipment 1200 comprises a memory 1201, a processor 1202 and a transceiver 1203. They are connected through a bus 1204. The memory 1201 is used for storing relevant instructions and data, and can transmit the stored data to the processor 1202.

[0254] The processor 1202 is used for reading the relevant instructions in the memory 1201 to perform the following operations:

[0255] The transceiver 1203 is controlled to receive a first message from a network device;

[0256] The first modulation order of each sub-band in the at least one sub-band is determined according to the first message;

[0257] The transceiver 1203 is controlled to receive data from or send data to the network device using the at least one sub-band according to the first modulation order.

[0258] Specifically, the processor 1202 described above can be a processing unit 1101 of the user equipment 1100 of the embodiments shown in Figure 11 The transceiver 1203 described above can be a transceiving unit 1102 of the user equipment 1100 of the embodiments shown in Figure 11

[0259] Referring to Figure 13 , Figure 13 A structural schematic diagram of a network device is provided for the embodiments of the present application. The network device 1300 comprises a processing unit 1301 and a transceiving unit 1302; wherein,

[0260] The transceiving unit 1302 is used for sending a third message to a terminal device, and the third message is used for indicating the transmission power of each sub-band in at least one sub-band;

[0261] The processing unit 1301 is used for controlling the transceiving unit 1302 to receive data from or send data to the terminal device using the at least one sub-band according to the transmission power.

[0262] In some possible implementation manners, the third message comprises an index value of the target transmission power of each sub-band in the at least one sub-band.

[0263] In some possible implementation manners, the third message is used for indicating the adjustment amount of the transmission power of each sub-band in the at least one sub-band.

[0264] ​In some possible implementation, the third message is a downlink control information (DCI) or a radio resource control (RRC) message.

[0265] Referring to Figure 14 , Figure 14 A structural schematic diagram of a network device is provided for the embodiments of the present application. The network device 1400 includes a memory 1401, a processor 1402, and a transceiver 1403. They are connected through a bus 1404. The memory 1401 is used to store relevant instructions and data, and can transmit the stored data to the processor 1402.

[0266] The processor 1402 is used to read the relevant instructions in the memory 1401 to perform the following operations:

[0267] The transceiver 1403 is controlled to send a third message to a terminal device, where the third message is used to indicate a transmission power of each sub-band in at least one sub-band;

[0268] According to the transmission power, the transceiver 1403 is controlled to receive data from the terminal device or send data to the terminal device using the at least one sub-band.

[0269] Specifically, the processor 1402 in the above can be a processing unit 1301 of the network device 1300 in the embodiment shown in Figure 13 The transceiver 1403 in the above can be a transceiving unit 1302 of the network device 1300 in the embodiment shown in Figure 13

[0270] Referring to Figure 15 , Figure 15 A structural schematic diagram of a terminal device is provided for the embodiments of the present application. The terminal device 1500 includes a processing unit 1501 and a transceiving unit 1502; wherein,

[0271] The transceiving unit 1502 is used to receive a third message from a network device;

[0272] The processing unit 1501 is used to determine a transmission power of each sub-band in at least one sub-band according to the third message;

[0273] The processing unit 1502 is also used to control the transceiving unit 1502 to receive data from the network device or send data to the network device using the at least one sub-band according to the transmission power.

[0274] In some possible implementation, the third message includes an index value of a target transmission power of each sub-band in the at least one sub-band.

[0275] ​In some possible implementations, the third message is used to indicate an adjustment amount of the transmit power of each subband in the at least one subband.

[0276] In some possible implementations, the third message is downlink control information DCI or radio resource control RRC message.

[0277] See Figure 16 , Figure 16 This is a schematic diagram of the structure of a terminal device provided in an embodiment of the present application. Terminal device 1600 includes memory 1601, processor 1602, and transceiver 1603. These are connected via bus 1604. Memory 1601 is used to store relevant instructions and data and can transmit the stored data to processor 1602.

[0278] The processor 1602 is configured to read relevant instructions in the memory 1601 and perform the following operations:

[0279] Controlling the transceiver 1603 to send a third message to the terminal device, where the third message is used to indicate the transmit power of each subband in the at least one subband;

[0280] According to the transmission power, the transceiver 1603 is controlled to use the at least one sub-band to receive data from the terminal device or to send data to the terminal device.

[0281] Specifically, the processor 1602 may be Figure 15 The processing unit 1501 of the terminal device 1500 of the embodiment shown in FIG. 1 and the transceiver 1603 may be Figure 15 The transceiver unit 1502 of the terminal device 1500 of the embodiment described.

[0282] See also Figure 17 , Figure 17 A schematic diagram of the structure of a chip provided by the present application is provided for the embodiment of the present application. The chip 1700 includes: a processor 1701 and one or more interfaces 1702 coupled to the processor 1701.

[0283] Exemplarily, the processor 1701 can be used to read and execute computer-readable instructions. In a specific implementation, the processor 1701 may mainly include a controller, an arithmetic unit, and a register. Exemplarily, the controller is mainly responsible for decoding instructions and issuing control signals for operations corresponding to the instructions. The arithmetic unit is mainly responsible for performing fixed-point or floating-point arithmetic operations, shift operations, and logical operations, etc., and can also perform address operations and conversions. The register is mainly responsible for storing register operands and intermediate operation results temporarily stored during the execution of instructions. In a specific implementation, the hardware architecture of the processor 1101 can be an application specific integrated circuit (ASIC) architecture, a microprocessor without interlocked piped stages architecture (MIPS) architecture, an advanced reduced instruction set machine (ARM) architecture, or an NP architecture, etc. The processor 1701 can be single-core or multi-core.

[0284] For example, interface 1702 can be used to input data to be processed to processor 1701 and output processing results of processor 1701. In a specific implementation, interface 1702 can be a general purpose input / output (GPIO) interface that can be connected to multiple peripheral devices (such as a display (LCD), camera, radio frequency (RF) module, etc.). Interface 1702 is connected to processor 1701 via bus 1703.

[0285] In some possible implementations, the processor 1701 may be used to call from the memory an implementation program or data of the signal sending and receiving method provided in one or more embodiments of the present application on the network device or terminal device side, so that the chip can implement the aforementioned Figure 2 、 Figure 6 and Figure 7 The communication method shown and Figure 8 The modulation order and transmit power shown. The memory can be integrated with the processor 1701, or it can be coupled to the chip 1700 through the interface 1702, that is, the memory can be a part of the chip 1700, or it can be independent of the chip 1700. The interface 1702 can be used to output the execution result of the processor 1701. For example information, in this application, the interface 1702 can be specifically used to output the modulation order determined by the processor 1701. Regarding the signal sending and receiving methods provided in one or more embodiments of the present application, reference can be made to the aforementioned embodiments, which will not be repeated here.

[0286] It should be noted that the functions corresponding to the processor 1701 and the interface 1702 can be implemented through hardware design, software design, or a combination of hardware and software, and there is no limitation here.

[0287] An embodiment of the present application also provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, it can implement the process related to the terminal device in the communication method provided by the above method embodiment.

[0288] An embodiment of the present application also provides a computer-readable storage medium having a computer program stored thereon. When the program is executed by a processor, the program can implement the network device-related processes in the communication method provided in the above method embodiment.

[0289] The present application also provides a computer program product that, when executed on a computer or processor, causes the computer or processor to perform one or more steps of any of the aforementioned communication methods. If the various components of the aforementioned devices are implemented as software functional units and sold or used as independent products, they may be stored in the computer-readable storage medium.

[0290] It should be understood that the processor mentioned in the embodiments of the present application may be a central processing unit (CPU), or may be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc.

[0291] It should also be understood that the memory referred to in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or a flash memory. The volatile memory can be a random access memory (Random Access Memory, RAM) used as an external cache. By way of example but not limitation, many forms of RAM are available, such as static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synchlink DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM).

[0292] It should be noted that when the processor is a general processor, a DSP, an ASIC, a FPGA or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, the memory (storage module) is integrated in the processor.

[0293] It should be noted that the memory described herein is intended to include, but not limited to, these and any other suitable types of memory.

[0294] It should also be understood that the first, second, third, fourth and various numerical references referred to herein are only for the convenience of differentiation for description, and do not limit the scope of the present application.

[0295] It should be understood that the term "and / or" herein is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after it.

[0296] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0297] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0298] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0299] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0300] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0301] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0302] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0303] The steps in the method of the embodiment of the present application can be adjusted in order, combined and deleted according to actual needs.

[0304] The modules in the device of the embodiment of the present application can be merged, divided and deleted according to actual needs.

[0305] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A communication method, characterized in that: include: Sending a first message to a terminal device, where the first message is used to indicate a first modulation order of each subband in at least one subband; The first message includes first information, where the first information is used to indicate an adjustment amount of the transmit power of the at least one subband; According to the first modulation order, data is received from the terminal device or data is sent to the terminal device using the at least one subband; wherein the first modulation order of each subband is determined based on the channel quality corresponding to each subband.

2. The method according to claim 1, characterized in that The first message includes an index of the first modulation order.

3. The method according to claim 1 or 2, characterized in that The first message is downlink control information DCI or radio resource control RRC message.

4. The method according to claim 1, wherein Before sending the first message to the terminal device, the method further includes: A second message is sent to the terminal device, where the second message is used to indicate a second modulation order for each subband in at least one subband.

5. The method according to claim 4, characterized in that The first message includes an index of the first modulation order, and the second message includes an index of the second modulation order.

6. The method according to claim 4, characterized in that The first message is used to indicate an adjustment amount of the first modulation order relative to the second modulation order, and the second message includes an index of the second modulation order.

7. The method according to claim 6, characterized in that The first information is further used to indicate an adjustment amount of the first modulation order relative to the second modulation order.

8. The method according to any one of claims 4 to 7, characterized in that The first message is a DCI, and the second message is an RRC message.

9. A communication method, characterized in that: include: receiving a first message from a network device; The first message is used to indicate a first modulation order of each subband in at least one subband; The first message includes first information, where the first information is used to indicate an adjustment amount of the transmit power of the at least one subband; determining a first modulation order for each subband in the at least one subband according to the first message; According to the first modulation order, data is received from the network device or data is sent to the network device using the at least one subband; wherein the first modulation order of each subband is determined according to the channel quality corresponding to each subband.

10. The method according to claim 9, characterized in that The first message includes an index of the first modulation order.

11. The method according to claim 9 or 10, characterized in that The first message is downlink control information DCI or radio resource control RRC message.

12. The method according to claim 9, characterized in that Before receiving the first message from the network device, the method further includes: A second message is received from the network device, the second message being used to indicate a second modulation order for each subband in at least one subband.

13. The method according to claim 12, characterized in that The first message includes an index of the first modulation order, and the second message includes an index of the second modulation order.

14. The method according to claim 12, characterized in that The first message is used to indicate an adjustment amount of the first modulation order relative to the second modulation order, and the second message includes an index of the second modulation order; Determining the first modulation order according to the first message includes: The first modulation order is determined according to the first message and the second message.

15. The method according to claim 14, characterized in that The first information is further used to indicate an adjustment amount of the first modulation order relative to the second modulation order.

16. The method according to any one of claims 12 to 15, characterized in that The first message is a DCI, and the second message is an RRC message.

17. A communication method, characterized in that: include: Sending a third message to the terminal device, where the third message is used to indicate the transmit power of each subband in the at least one subband; The third message is used to indicate an adjustment amount of the transmit power of each subband in the at least one subband; Data is received from the terminal device or data is transmitted to the terminal device using the at least one sub-band according to the transmit power.

18. The method according to claim 17, characterized in that The third message includes an index value of a target transmit power of each subband in the at least one subband.

19. The method according to claim 17 or 18, characterized in that The third message is downlink control information DCI or radio resource control RRC message.

20. A communication method, characterized in that: include: receiving a third message from a network device; the third message being used to indicate an adjustment amount of transmit power of each subband in at least one subband; determining, according to the third message, a transmit power for each subband of the at least one subband; Data is received from the network device or data is transmitted to the network device using the at least one sub-band according to the transmit power.

21. The method according to claim 20, characterized in that The third message includes an index value of a target transmit power of each subband in the at least one subband.

22. The method according to claim 20 or 21, characterized in that The third message is downlink control information DCI or radio resource control RRC message.

23. A network device, characterized in that: include: a transceiver unit, configured to send a first message to a terminal device, where the first message is used to indicate a first modulation order of each subband in at least one subband; The first message includes first information, where the first information is used to indicate an adjustment amount of the transmit power of the at least one subband; A processing unit is used to control the transceiver unit to use the at least one subband to receive data from the terminal device or send data to the terminal device according to the first modulation order; wherein the first modulation order of each subband is determined according to the channel quality corresponding to each subband.

24. The device according to claim 23, characterized in that The first message includes an index of the first modulation order.

25. The device according to claim 23 or 24, characterized in that The first message is downlink control information DCI or radio resource control RRC message.

26. The device according to claim 23, characterized in that Before sending the first message to the terminal device, the transceiver unit is further configured to: A second message is sent to the terminal device, where the second message is used to indicate a second modulation order for each subband in at least one subband.

27. The device according to claim 26, characterized in that The first message includes an index of the first modulation order, and the second message includes an index of the second modulation order.

28. The apparatus according to claim 26, wherein The first message is used to indicate an adjustment amount of the first modulation order relative to the second modulation order, and the second message includes an index of the second modulation order.

29. The device according to claim 28, characterized in that The first information is further used to indicate an adjustment amount of the first modulation order relative to the second modulation order.

30. The apparatus according to any one of claims 26 to 29, characterized in that The first message is a DCI, and the second message is an RRC message.

31. A terminal device, characterized in that: include: a transceiver unit, configured to receive a first message from a network device; The first message is used to indicate a first modulation order of each subband in at least one subband; The first message includes first information, where the first information is used to indicate an adjustment amount of the transmit power of the at least one subband; a processing unit, configured to determine a first modulation order for each subband in the at least one subband according to the first message; The processing unit is also used to control the transceiver unit to use the at least one sub-band to receive data from the network device or send data to the network device according to the first modulation order; wherein the first modulation order of each sub-band is determined according to the channel quality corresponding to each sub-band.

32. The device according to claim 31, characterized in that The first message includes an index of the first modulation order.

33. The device according to claim 31 or 32, characterized in that The first message is downlink control information DCI or radio resource control RRC message.

34. The apparatus according to claim 31, wherein Before receiving the first message from the network device, the transceiver unit is further configured to: A second message is received from the network device, the second message being used to indicate a second modulation order for each subband in at least one subband.

35. The device according to claim 34, characterized in that The first message includes an index of the first modulation order, and the second message includes an index of the second modulation order.

36. The apparatus according to claim 34, wherein The first message is used to indicate an adjustment amount of the first modulation order relative to the second modulation order, and the second message includes an index of the second modulation order; In determining the first modulation order according to the first message, the processing unit is specifically configured to: The first modulation order is determined according to the first message and the second message.

37. The device according to claim 36, characterized in that The first information is further used to indicate an adjustment amount of the first modulation order relative to the second modulation order.

38. The apparatus according to any one of claims 34 to 37, characterized in that The first message is a DCI, and the second message is an RRC message.

39. A network device, characterized in that: include: a transceiver unit, configured to send a third message to a terminal device, where the third message is used to indicate a transmit power of each subband in at least one subband; The third message is used to indicate an adjustment amount of the transmit power of each subband in the at least one subband; A processing unit is used to control the transceiver unit to use the at least one sub-band to receive data from the terminal device or send data to the terminal device according to the transmission power.

40. The apparatus according to claim 39, wherein The third message includes an index value of a target transmit power of each subband in the at least one subband.

41. The apparatus according to claim 39 or 40, characterized in that The third message is downlink control information DCI or radio resource control RRC message.

42. A terminal device, characterized in that: include: a transceiver unit, configured to receive a third message from the network device; The third message is used to indicate an adjustment amount of the transmit power of each subband in the at least one subband; a processing unit, configured to determine a transmit power of each subband in the at least one subband according to the third message; The processing unit is further configured to control the transceiver unit according to the transmit power, and use the at least one sub-band to receive data from the network device or send data to the network device.

43. The device according to claim 42, characterized in that The third message includes an index value of a target transmit power of each subband in the at least one subband.

44. The apparatus according to claim 42 or 43, characterized in that The third message is downlink control information DCI or radio resource control RRC message.

45. A communication device, comprising a processor, wherein the processor is connected to a memory, the memory is used to store a computer program, and the processor is used to execute the computer program stored in the memory, so that the device performs the method according to any one of claims 1 to 22.

46. ​​A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed, the method according to any one of claims 1 to 22 is implemented.

47. A computer program product, characterized in that The computer program product comprises instructions which, when executed, implement the method of any one of claims 1 to 22.

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