Communication method and communication apparatus

Abstract

This application provides a communication method and a communication apparatus. The method includes: acquiring a first set of transmission parameters, the first set of transmission parameters being determined by a first area where a terminal device is located and a correspondence between multiple areas and multiple sets of transmission parameters, the multiple areas including the first area where the terminal device is located, the multiple sets of transmission parameters including the first set of transmission parameters, and the first set of transmission parameters corresponding to the first area; transmitting a Physical Downlink Control Channel (PDCCH) according to the first set of transmission parameters; or receiving a Physical Uplink Control Channel (PUCCH) according to the first set of transmission parameters. This application can flexibly determine the transmission parameters of the PDCCH or the PUCCH, improving communication efficiency.

Description

Technical Field

[0001] This application relates to the field of wireless communication, and more specifically, to a communication method and a communication device. Background Technology

[0002] In communication systems, network devices and terminal devices transmit control channels, such as the physical downlink control channel (PDCCH) and the physical uplink control channel (PUCCH). The PDCCH carries downlink control information (DCI), and the PUCCH carries uplink control information (UCI). Currently, fixed PDCCH or PUCCH transmission parameters, such as low-order PDCCH or PUCCH transmission parameters, are used when transmitting PDCCH or PUCCH. However, with the development of communication systems, the overhead of DCI or UCI signaling increases, leading to a significant increase in the demand for PDCCH or PUCCH capacity. Furthermore, fixed PDCCH or PUCCH transmission parameters offer low flexibility and communication efficiency in the face of changing channel quality. Summary of the Invention

[0003] This application provides a communication method and a communication device to flexibly determine the transmission parameters of the PDCCH or PUCCH, thereby improving communication efficiency.

[0004] In a first aspect, a communication method is provided, which can be applied to a network-side communication device. Unless otherwise specified, the network-side communication device in this application can be a network device, a component in the network device (such as a circuit, chip or chip system), or a logic module or software that can implement all or part of the functions of the network device.

[0005] The method may include: obtaining a first set of transmission parameters, the first set of transmission parameters consisting of a first region where the terminal device is located and a correspondence between multiple regions and multiple sets of transmission parameters, the multiple regions including the first region where the terminal device is located, the multiple sets of transmission parameters including the first set of transmission parameters, the first set of transmission parameters corresponding to the first region; sending a physical downlink control channel (PDCCH) according to the first set of transmission parameters; or receiving a physical uplink control channel (PUCCH) according to the first set of transmission parameters.

[0006] Based on the above scheme, according to the prior correspondence between multiple regions and multiple sets of transmission parameters, and the region to which the terminal device currently belongs, the network device or terminal device can improve the flexibility of determining the transmission parameters of PDCCH or PUCCH by obtaining a set of transmission parameters of PDCCH or PUCCH suitable for the current channel conditions or environment. Furthermore, when the channel conditions are good, higher-order transmission parameters can be used to transmit PDCCH or PUCCH, thereby increasing the capacity of the control channel and thus improving communication efficiency.

[0007] In conjunction with the first aspect, in some implementations of the first aspect, obtaining the first set of transmission parameters includes: sending first information, the first information being used to indicate the correspondence; receiving second information, the second information being used to indicate the first set of transmission parameters, the first set of transmission parameters being determined by the terminal device based on the first region and the correspondence.

[0008] Optionally, the method may further include: determining the correspondence.

[0009] Optionally, the first information is carried in radio resource control (RRC) signaling or DCI signaling, and the second information is carried in RRC signaling or UCI signaling.

[0010] Based on the above scheme, when the terminal device determines the correspondence, the terminal device can determine the first set of transmission parameters according to the first region to which the terminal device belongs and the correspondence. The terminal device reports the determined first set of transmission parameters to the network device, so that the network device can use transmission parameters suitable for the current channel conditions or environment to transmit PDCCH or PUCCH with the terminal device, thereby improving the flexibility of determining the transmission parameters of PDCCH or PUCCH. Furthermore, when the channel conditions are good, higher-order transmission parameters can be used to transmit PDCCH or PUCCH, thereby increasing the capacity of the control channel and thus improving communication efficiency.

[0011] In conjunction with the first aspect, in some implementations of the first aspect, before sending the PDCCH according to the first set of transmission parameters, or receiving the PUCCH according to the first set of transmission parameters, the method further includes: sending third information, the third information being used to indicate that the network device does not use the first set of transmission parameters, and / or the third information being used to indicate a set of transmission parameters different from the first set of transmission parameters; or sending third information, the third information being used to indicate that the network device uses the first set of transmission parameters.

[0012] Optionally, the third information is carried in RRC signaling or DCI signaling.

[0013] In conjunction with the first aspect, in some implementations of the first aspect, where the third information is used to instruct the network device not to use the first set of transmission parameters, the method further includes: sending the PDCCH according to the set of transmission parameters different from the first set of transmission parameters; or receiving the PDCCH according to the set of transmission parameters different from the first set of transmission parameters.

[0014] Based on the above scheme, once the terminal device has determined the correspondence, it can report the determined first set of transmission parameters to the network device. The network device can then determine whether the first set of transmission parameters provided by the terminal device can meet the service requirements based on its own services. If the service requirements cannot be met, the network device will provide the terminal device with a more suitable set of transmission parameters, enabling the network device to transmit PDCCH or PUCCH according to a set of transmission parameters that meet the service requirements, thereby improving the flexibility of determining the control channel transmission parameters.

[0015] In conjunction with the first aspect, in some implementations of the first aspect, obtaining the first set of transmission parameters includes: determining the first region where the terminal device is located; and determining the first set of transmission parameters based on the first region and the correspondence.

[0016] Based on the above scheme, once the correspondence between network devices is determined, the network devices can further determine suitable transmission parameters by combining the information on the location of the terminal devices.

[0017] In conjunction with the first aspect, in some implementations of the first aspect, the method further includes: receiving fourth information, the fourth information being used to indicate the first area where the terminal device is located.

[0018] Optionally, the fourth information is carried in RRC signaling or UCI signaling.

[0019] In conjunction with the first aspect, in some implementations of the first aspect, the method further includes: sending a fifth message, the fifth message being used to indicate the first set of transmission parameters.

[0020] Optionally, the fifth information is carried in RRC signaling or UCI signaling.

[0021] Based on the above scheme, when the network devices determine the correspondence, the network devices can send the determined first set of transmission parameters to the terminal devices, so that the terminal devices can use a set of transmission parameters suitable for the current channel conditions or environment to transmit PDCCH or PUCCH, thereby flexibly determining the transmission parameters of PDCCH or PUCCH.

[0022] In conjunction with the first aspect, in some implementations of the first aspect, the fourth information includes any one of the following: the index corresponding to the first region; the location of the terminal device; and the channel characteristic information of the terminal device, wherein the channel characteristic information of the terminal device includes at least one of the following: multipath component (MPC) information, reference channel matrix, and channel quality information.

[0023] In conjunction with the first aspect, in some implementations of the first aspect, determining the first region where the terminal device is located includes: determining the first region based on the index corresponding to the first region; or determining the first region where the terminal device is located based on the location of the terminal device; or determining the first region where the terminal device is located based on the channel characteristic information of the terminal device.

[0024] Based on the above scheme, the network device can further determine the area where the terminal device is located based on the location information or channel characteristic information provided by the terminal device, thereby determining the corresponding first set of transmission parameters.

[0025] In conjunction with the first aspect, in some implementations of the first aspect, the method further includes: sending a sixth message, the sixth message being used to instruct the terminal device to switch transmission modes, the transmission modes including a first transmission mode and a second transmission mode, the first transmission mode being a mode for transmitting the PDCCH according to the first set of transmission parameters or a mode for transmitting the PUCCH according to the first set of transmission parameters, and the second transmission mode being a mode for transmitting the PDCCH according to a predefined or preconfigured set of transmission parameters or a mode for transmitting the PUCCH according to a predefined or preconfigured set of transmission parameters.

[0026] Optionally, this sixth information is carried in RRC signaling or DCI signaling.

[0027] Based on the above scheme, when channel quality changes dynamically—for example, due to environmental factors causing the channel quality to change from high to low—using the previous transmission parameters might lead to wasted resources; conversely, when the channel quality changes from low to high, the current transmission parameters might not meet the communication requirements. Therefore, during communication, the transmission mode of the control channel can be flexibly switched according to the channel quality.

[0028] In conjunction with the first aspect, in some implementations of the first aspect, the method further includes: receiving seventh information, the seventh information being used to indicate whether the terminal device is capable of transmitting the PDCCH or the PUCCH using the first transmission mode.

[0029] Optionally, this seventh piece of information is carried in UCI signaling.

[0030] Secondly, a communication method is provided, which can be applied to a terminal-side communication device. Unless otherwise specified, the terminal-side communication device in this application can be a terminal device, or a component in the terminal device (e.g., a processor, chip, or chip system, such as a circuit or chip in the terminal device responsible for communication functions (e.g., a modem chip, also known as a baseband chip, or a system-on-chip (SoC) chip containing a modem core or a system-in-package (SIP) chip), or it can be a logic module or software that can implement all or part of the functions of the terminal device.

[0031] The method may include: obtaining a first set of transmission parameters, the first set of transmission parameters being determined by a first region where the terminal device is located and a correspondence between multiple regions and multiple sets of transmission parameters, the multiple regions including the first region where the terminal device is located, the multiple sets of transmission parameters including the first set of transmission parameters, the first set of transmission parameters corresponding to the first region; receiving a physical downlink control channel (PDCCH) according to the first set of transmission parameters; or, sending a physical uplink control channel (PUCCH) according to the first set of transmission parameters.

[0032] In conjunction with the second aspect, in some implementations of the second aspect, obtaining the first set of transmission parameters includes: receiving first information, the first information being used to indicate the correspondence; determining the first set of transmission parameters based on the first region and the correspondence; the method further includes: sending second information, the second information being used to indicate the first set of transmission parameters.

[0033] In conjunction with the second aspect, in some implementations of the second aspect, before receiving the PDCCH according to the first set of transmission parameters, or sending the PUCCH according to the first set of transmission parameters, the method further includes: receiving third information, the third information being used to indicate that the network device does not use the first set of transmission parameters, and / or the third information being used to indicate a set of transmission parameters different from the first set of transmission parameters; or receiving third information, the third information being used to indicate that the network device uses the first set of transmission parameters.

[0034] In conjunction with the second aspect, in some implementations of the second aspect, where the third information is used to indicate that the network device does not use the first set of transmission parameters, the method further includes: receiving the PDCCH according to a set of transmission parameters different from the first set of transmission parameters; or sending the PDCCH according to a set of transmission parameters different from the first set of transmission parameters.

[0035] In conjunction with the second aspect, in some implementations of the second aspect, obtaining the first set of transmission parameters includes: sending fourth information, the fourth information being used to indicate the first area where the terminal device is located; and receiving fifth information, the fifth information being used to indicate the first set of transmission parameters, the first set of transmission parameters being determined by the network device based on the first area and the correspondence.

[0036] In conjunction with the second aspect, in some implementations of the second aspect, the fourth information includes any one of the following: the index corresponding to the first region; the location of the terminal device; the channel characteristic information of the terminal device, wherein the channel characteristic information of the terminal device includes at least one of the following: multipath component (MPC) information, reference channel matrix, and channel quality information.

[0037] In conjunction with the second aspect, in some implementations of the second aspect, the method further includes: receiving sixth information, the sixth information being used to instruct the terminal device to perform a transmission mode switch, the transmission mode including a first transmission mode and a second transmission mode, the first transmission mode being a mode for transmitting the PDCCH according to the first set of transmission parameters or a mode for transmitting the PUCCH according to the first set of transmission parameters, and the second transmission mode being a mode for transmitting the PDCCH according to a predefined or preconfigured set of transmission parameters or a mode for transmitting the PUCCH according to a predefined or preconfigured set of transmission parameters.

[0038] In conjunction with the second aspect, in some implementations of the second aspect, the method further includes: sending a seventh message, the seventh message being used to indicate whether the terminal device is capable of transmitting the PDCCH or the PUCCH using the first transmission mode.

[0039] In conjunction with the first or second aspect, in some implementations, the first set of transmission parameters includes at least one of the following: the number of ports of the PDCCH, the modulation scheme of the PDCCH, at least one transmission scheme of the PDCCH, the aggregation level of the Control Channel Unit (CCE) of the PDCCH, and the number of ports of the Demodulation Reference Signal (DMRS) in the PDCCH; or the first set of transmission parameters includes at least one of the following: the number of ports of the PUCCH, the modulation scheme of the PUCCH, at least one transmission scheme of the PUCCH, the aggregation level of the Control Channel Unit (CCE) of the PUCCH, and the number of ports of the Demodulation Reference Signal (DMRS) in the PUCCH; wherein the number of ports of the PDCCH or the number of ports of the PUCCH is greater than or equal to 1, and the number of ports of the DMRS is greater than or equal to 1.

[0040] Based on the above scheme, according to the correspondence between multiple regions and multiple sets of transmission parameters, the PDCCH or PUCCH transmission parameters suitable for the current channel conditions or environment are determined, so that when the channel conditions are good, the PDCCH or PUCCH can use multiple port numbers, multiple port DMRS, or higher-order modulation methods, etc.

[0041] In conjunction with the first or second aspect, in some implementations, the multiple regions are associated with multiple location information, including the location of the terminal device; or the multiple regions are associated with multiple channel feature information, including the channel feature information of the terminal device.

[0042] Thirdly, a communication method is provided, which can be applied to a network-side communication device. Unless otherwise specified, the network-side communication device in this application can be a network device, a component in the network device (such as a circuit, chip or chip system), or a logic module or software that can realize all or part of the functions of the network device.

[0043] The method may include: determining a correspondence between multiple regions and multiple sets of transmission parameters, wherein the multiple regions include a first region where the terminal device is located, and the multiple sets of transmission parameters include a first set of transmission parameters used to transmit a physical downlink control channel (PDCCH) or a physical uplink control channel (PUCCH); determining the first set of transmission parameters based on the correspondence and the first region; sending the PDCCH based on the first set of transmission parameters; or receiving the PUCCH based on the first set of transmission parameters.

[0044] Based on the above scheme, the network device obtains the correspondence between multiple regions and multiple sets of transmission parameters. Then, according to the region where the terminal device is currently located and the correspondence, the network device can determine a set of PDCCH or PUCCH transmission parameters suitable for the current channel conditions or environment, thereby improving the flexibility of PDCCH or PUCCH transmission parameter determination. Furthermore, when the channel conditions are good, higher-order transmission parameters can be used for PDCCH or PUCCH transmission, thereby increasing the capacity of the control channel and thus improving communication efficiency.

[0045] In conjunction with the third aspect, in some implementations of the third aspect, the method further includes: receiving fourth information, the fourth information being used to indicate the first area where the terminal device is located.

[0046] In conjunction with the third aspect, in some implementations of the third aspect, the fourth information includes any one of the following: the index corresponding to the first region; the location of the terminal device; the channel characteristic information of the terminal device, wherein the channel characteristic information of the terminal device includes at least one of the following: multipath component (MPC) information, reference channel matrix, and channel quality information.

[0047] In conjunction with the third aspect, in some implementations of the third aspect, determining the first set of transmission parameters based on the correspondence and the first region includes: determining the first set of transmission parameters based on the index corresponding to the first region and the correspondence; or determining the first region where the terminal device is located based on the location of the terminal device; determining the first set of transmission parameters based on the first region and the correspondence; or determining the first region where the terminal device is located based on the channel characteristics of the terminal device; and determining the first set of transmission parameters based on the first region and the correspondence.

[0048] In conjunction with the third aspect, in some implementations of the third aspect, the method further includes: sending a fifth message, which is used to indicate the first set of transmission parameters.

[0049] In conjunction with the third aspect, in some implementations of the third aspect, the method further includes: sending a sixth message, the sixth message being used to instruct the terminal device to switch transmission modes, the transmission modes including a first transmission mode and a second transmission mode, the first transmission mode being a mode for transmitting the PDCCH according to the first set of transmission parameters or a mode for transmitting the PUCCH according to the first set of transmission parameters, and the second transmission mode being a mode for transmitting the PDCCH according to a predefined or preconfigured set of transmission parameters or a mode for transmitting the PUCCH according to a predefined or preconfigured set of transmission parameters.

[0050] In conjunction with the third aspect, in some implementations of the third aspect, the method further includes: receiving seventh information, the seventh information being used to indicate whether the terminal device is capable of transmitting the PDCCH or the PUCCH using the first transmission mode.

[0051] Fourthly, a communication method is provided, which can be applied to a terminal-side communication device. Unless otherwise specified, the terminal-side communication device in this application can be a terminal device, or a component in the terminal device (e.g., a processor, chip, or chip system, such as a circuit or chip in the terminal device responsible for communication functions (e.g., a modem chip, also known as a baseband chip, or a SoC chip or SIP chip containing a modem core), or a logic module or software that can implement all or part of the functions of the terminal device.

[0052] The method may include: receiving a physical downlink control channel (PDCCH) according to a first set of transmission parameters; or sending a physical downlink control channel (PUCCH) according to a first set of transmission parameters; wherein the first set of transmission parameters is determined based on the correspondence between multiple regions and multiple sets of transmission parameters and the first region where the terminal device is located, the multiple regions include the first region, and the multiple sets of transmission parameters include the first set of transmission parameters.

[0053] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the method further includes: sending fourth information, which is used to indicate the first area where the terminal device is located.

[0054] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the fourth information includes any one of the following: the index corresponding to the first region; the location of the terminal device; the channel characteristic information of the terminal device, wherein the channel characteristic information of the terminal device includes at least one of the following: multipath component (MPC) information, reference channel matrix, and channel quality information.

[0055] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the method further includes: receiving fifth information, which is used to indicate the first set of transmission parameters.

[0056] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the method further includes: receiving sixth information, the sixth information being used to instruct the terminal device to perform a transmission mode switch, the transmission mode including a first transmission mode and a second transmission mode, the first transmission mode being a mode for transmitting the PDCCH according to the first set of transmission parameters or a mode for transmitting the PUCCH according to the first set of transmission parameters, and the second transmission mode being a mode for transmitting the PDCCH according to a predefined or preconfigured set of transmission parameters or a mode for transmitting the PUCCH according to a predefined or preconfigured set of transmission parameters.

[0057] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the method further includes: sending a seventh message, the seventh message being used to indicate whether the terminal device is capable of transmitting the PDCCH or the PUCCH using the first transmission mode.

[0058] In conjunction with the third or fourth aspect, in some implementations, the first set of transmission parameters includes at least one of the following: the number of ports of the PDCCH, the modulation scheme of the PDCCH, at least one transmission scheme of the PDCCH, the aggregation level of the Control Channel Unit (CCE) of the PDCCH, and the number of ports of the Demodulation Reference Signal (DMRS) in the PDCCH; or the first set of transmission parameters includes at least one of the following: the number of ports of the PUCCH, the modulation scheme of the PUCCH, at least one transmission scheme of the PUCCH, the aggregation level of the Control Channel Unit (CCE) of the PUCCH, and the number of ports of the Demodulation Reference Signal (DMRS) in the PUCCH; wherein the number of ports of the PDCCH or the number of ports of the PUCCH is greater than or equal to 1, and the number of ports of the DMRS is greater than or equal to 1.

[0059] In conjunction with the third or fourth aspect, in some implementations, the multiple regions are associated with multiple location information, including the location of the terminal device; or the multiple regions are associated with multiple channel feature information, including the channel feature information of the terminal device.

[0060] Fifthly, a communication method is provided, which can be applied to a terminal-side communication device. Unless otherwise specified, the terminal-side communication device in this application can be a terminal device, or a component in the terminal device (e.g., a processor, chip, or chip system, such as a circuit or chip in the terminal device responsible for communication functions (e.g., a modem chip, also known as a baseband chip, or a SoC chip or SIP chip containing a modem core), or a logic module or software that can implement all or part of the functions of the terminal device.

[0061] The method may include: receiving first information, the first information indicating a correspondence between multiple regions and multiple sets of transmission parameters, the multiple regions including a first region where the terminal device is located, the multiple sets of transmission parameters including a first set of transmission parameters used to transmit a physical downlink control channel (PDCCH) or a physical uplink control channel (PUCCH); determining the first set of transmission parameters based on the correspondence and the first region; receiving the PDCCH based on the first set of transmission parameters; or sending the PUCCH based on the first set of transmission parameters.

[0062] Based on the above scheme, the network device obtains the correspondence between multiple regions and multiple sets of transmission parameters. Then, the network device sends the correspondence to the terminal device, enabling the terminal device to determine a set of PDCCH or PUCCH transmission parameters suitable for the current channel conditions or environment based on the region where the terminal device is currently located and the correspondence. This improves the flexibility of determining the transmission parameters of PDCCH or PUCCH. Furthermore, when the channel conditions are good, higher-order transmission parameters can be used for PDCCH or PUCCH transmission, thereby increasing the capacity of the control channel and thus improving communication efficiency.

[0063] In conjunction with the fifth aspect, in some implementations of the fifth aspect, a second message is sent, which is used to indicate the first set of transmission parameters.

[0064] In conjunction with the fifth aspect, in some implementations of the fifth aspect, the method further includes: receiving third information, the third information being used to instruct the network device not to use the first set of transmission parameters, and / or the third information being used to instruct a set of transmission parameters different from the first set of transmission parameters; or receiving third information, the third information being used to instruct the network device to use the first set of transmission parameters.

[0065] In conjunction with the fifth aspect, in some implementations of the fifth aspect, where the third information is used to indicate that the network device does not use the first set of transmission parameters, the method further includes: receiving the PDCCH according to a set of transmission parameters different from the first set of transmission parameters; or sending the PDCCH according to a set of transmission parameters different from the first set of transmission parameters.

[0066] In conjunction with the fifth aspect, in some implementations of the fifth aspect, the method further includes: receiving sixth information, the sixth information being used to instruct the terminal device to perform a transmission mode switch, the transmission mode including a first transmission mode and a second transmission mode, the first transmission mode being a mode for transmitting the PDCCH according to the first set of transmission parameters or a mode for transmitting the PUCCH according to the first set of transmission parameters, and the second transmission mode being a mode for transmitting the PDCCH according to a predefined or preconfigured set of transmission parameters or a mode for transmitting the PUCCH according to a predefined or preconfigured set of transmission parameters.

[0067] In conjunction with the fifth aspect, in some implementations of the fifth aspect, a seventh message is sent, which is used to indicate whether the terminal device is able to transmit the PDCCH or the PUCCH using the first transmission mode.

[0068] Sixthly, a communication method is provided, which can be applied to a network-side communication device. Unless otherwise specified, the network-side communication device in this application can be a network device, a component within a network device (e.g., a circuit, chip, or chip system), or a logic module or software capable of implementing all or part of the functions of the network device. The method may include: sending first information indicating a correspondence between multiple regions and multiple sets of transmission parameters, the multiple regions including a first region where a terminal device is located, the multiple sets of transmission parameters including a first set of transmission parameters used to transmit a Physical Downlink Control Channel (PDCCH) or a Physical Uplink Control Channel (PUCCH); sending the PDCCH according to the first set of transmission parameters; or receiving the PUCCH according to the first set of transmission parameters, wherein the first set of transmission parameters is determined based on the correspondence and the first region.

[0069] In conjunction with the sixth aspect, in some implementations of the sixth aspect, the method further includes: receiving second information, the second information being used to indicate the first set of transmission parameters.

[0070] In conjunction with the sixth aspect, in some implementations of the sixth aspect, the method further includes: sending third information, the third information being used to instruct the network device not to use the first set of transmission parameters, and / or the third indication information being used to indicate a set of transmission parameters different from the first set of transmission parameters; or sending third information, the third information being used to instruct the network device to use the first set of transmission parameters.

[0071] In conjunction with the sixth aspect, in some implementations of the sixth aspect, where the third information is used to indicate that the network device does not use the first set of transmission parameters, the method further includes: sending the PDCCH according to a set of transmission parameters different from the first set of transmission parameters; or receiving the PDCCH according to a set of transmission parameters different from the first set of transmission parameters.

[0072] In conjunction with the sixth aspect, in some implementations of the sixth aspect, the method further includes: sending sixth information, the sixth information being used to instruct the terminal device to switch transmission modes, the transmission modes including a first transmission mode and a second transmission mode, the first transmission mode being a mode for transmitting the PDCCH according to the first set of transmission parameters or a mode for transmitting the PUCCH according to the first set of transmission parameters, and the second transmission mode being a mode for transmitting the PDCCH according to a predefined or preconfigured set of transmission parameters or a mode for transmitting the PUCCH according to a predefined or preconfigured set of transmission parameters.

[0073] In conjunction with the sixth aspect, in some implementations of the sixth aspect, the method further includes: receiving seventh information, the seventh information being used to indicate whether the terminal device is capable of transmitting the PDCCH or the PUCCH using the first transmission mode.

[0074] In conjunction with the fifth or sixth aspect, in some implementations, the first set of transmission parameters includes at least one of the following: the number of ports of the PDCCH, the modulation scheme of the PDCCH, at least one transmission scheme of the PDCCH, the aggregation level of the Control Channel Unit (CCE) of the PDCCH, and the number of ports of the Demodulation Reference Signal (DMRS) in the PDCCH; or the first set of transmission parameters includes at least one of the following: the number of ports of the PUCCH, the modulation scheme of the PUCCH, at least one transmission scheme of the PUCCH, the aggregation level of the Control Channel Unit (CCE) of the PUCCH, and the number of ports of the Demodulation Reference Signal (DMRS) in the PUCCH; wherein the number of ports of the PDCCH or the number of ports of the PUCCH is greater than or equal to 1, and the number of ports of the DMRS is greater than or equal to 1.

[0075] In conjunction with the fifth or sixth aspect, in some implementations, the multiple regions are associated with multiple location information, including the location of the terminal device; or the multiple regions are associated with multiple channel feature information, including the channel feature information of the terminal device.

[0076] For details regarding the beneficial effects not elaborated in aspects two through six, please refer to the description of aspect one above, which will not be repeated here.

[0077] A seventh aspect provides a communication apparatus for performing the methods of the first to sixth aspects and any possible implementation thereof. Specifically, the apparatus may include units and / or modules for performing the methods of the first to sixth aspects and any possible implementation thereof, such as processing units and / or communication units.

[0078] Eighthly, a communication device is provided, the device comprising: at least one processor configured to cause the device to perform the methods of the first to sixth aspects and any possible implementation thereof.

[0079] Optionally, the at least one processor is configured to execute computer programs or instructions to perform the methods described in the first to sixth aspects and any possible implementation thereof.

[0080] Optionally, the device further includes a memory for storing the computer program or instructions.

[0081] Optionally, the at least one processor is coupled to a memory for storing the computer program or instructions. The memory may be located externally to the device.

[0082] Optionally, the device also includes a communication interface through which the processor reads computer programs or instructions from memory. This can be understood as the communication interface being coupled to the processor and used to input computer programs or instructions into the processor, or to output information from the processor.

[0083] The aforementioned communication device may be a terminal, a communication module in a terminal, or a chip in a terminal that is responsible for communication functions, such as a modem chip (also known as a baseband chip) or a SoC or SIP chip containing a modem module.

[0084] The aforementioned communication device may be a network, a communication module in a network, or a chip in a network that is responsible for communication functions, such as a modem chip (also known as a baseband chip) or a SoC or SIP chip that contains a modem module.

[0085] Unless otherwise specified, or if the transmission and acquisition / reception operations involved do not contradict their actual function or internal logic in the relevant description, they can be understood as output, input, or other operations, or as transmission and reception operations performed by radio frequency circuits and antennas. This application does not limit them in this regard.

[0086] A ninth aspect provides a computer-readable storage medium storing a computer program (e.g., program code) or instructions that, when executed on a communication device, cause the communication device to perform the methods of the first to sixth aspects and any possible implementation thereof.

[0087] In a tenth aspect, a computer program product containing instructions is provided, which, when run on a computer, causes the computer to perform the methods described in the first to sixth aspects and any possible implementation thereof.

[0088] Eleventhly, a communication system is provided, comprising a network device and a terminal device, wherein the network device is configured to execute the method provided in any implementation of the first aspect, and the terminal device is configured to execute the method provided in any implementation of the second aspect; or, the network device is configured to execute the method provided in any implementation of the third aspect, and the terminal device is configured to execute the method provided in any implementation of the fourth aspect; or, the network device is configured to execute the method provided in any implementation of the sixth aspect, and the terminal device is configured to execute the method provided in any implementation of the fifth aspect.

[0089] For the beneficial effects of aspects seven through eleven, please refer to the description of aspect one above, which will not be repeated here. Attached Figure Description

[0090] Figure 1 This is a schematic diagram of a communication system applicable to an embodiment of this application.

[0091] Figure 2 This is a schematic diagram of an ORAN system applicable to embodiments of this application.

[0092] Figure 3 This is a schematic diagram of an access network device applicable to embodiments of this application.

[0093] Figure 4 This is a schematic block diagram of a communication method provided in an embodiment of this application.

[0094] Figure 5 This is a schematic diagram of a region division provided in an embodiment of this application.

[0095] Figure 6 This is a schematic block diagram of a communication method provided in an embodiment of this application.

[0096] Figure 7 This is a schematic block diagram of a communication method provided in an embodiment of this application.

[0097] Figure 8 This is a schematic block diagram of a communication method provided in an embodiment of this application.

[0098] Figure 9 This is a schematic block diagram of a communication method provided in an embodiment of this application.

[0099] Figure 10 This is a schematic block diagram of another communication method provided in the embodiments of this application.

[0100] Figure 11 This is a schematic block diagram of another communication method provided in the embodiments of this application.

[0101] Figure 12 This is a schematic block diagram of a communication device provided in an embodiment of this application.

[0102] Figure 13 This is a schematic block diagram of a communication device provided in an embodiment of this application.

[0103] Figure 14 This is a schematic block diagram of a chip system provided in an embodiment of this application. Detailed Implementation

[0104] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0105] Before introducing the scheme of this application, the following points should be noted.

[0106] (1) In this application, the expression " / " is used to indicate that the objects before and after are in an "or" relationship; for example, A / B can mean: A or B. The expression "and / or" is used to indicate that the objects before and after are in a relationship of either "and" or "or"; for example, A and / or B can mean the following: A exists alone, B exists alone, A and B exist simultaneously, where A and B can be single or multiple. "At least one of the following" or similar expressions are used to indicate any combination of the listed items; for example, at least one of A, B and / or C can mean the following: A exists alone, B exists alone, C exists alone, A and B exist simultaneously, B and C exist simultaneously, A and C exist simultaneously, A, B and C exist simultaneously, where A, B, and C can be single or multiple.

[0107] (2) In this application, "send" and "receive" indicate the direction of signal transmission. For example, "send information to XX" can be understood as the destination of the information being XX, which may include direct transmission via the air interface or indirect transmission via the air interface by other units or modules. "Receive information from YY" can be understood as the source of the information being YY, which may include direct reception from YY via the air interface or indirect reception from YY via the air interface by other units or modules. "Send" can also be understood as the "output" of the chip interface, and "receive" can also be understood as the "input" of the chip interface. In other words, sending and receiving can occur between devices, such as between network devices and terminal devices, or within a device, such as between components, modules, chips, software modules, or hardware modules within the device via a bus, wiring, or interface.

[0108] (3) In the various embodiments of this application, unless otherwise specified or logically conflicting, the terms and / or descriptions of different embodiments are consistent and can be referenced by each other. The technical features of different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0109] (4) In this application, "first," "second," and "#1," "#2," and "#A" are merely for descriptive convenience and are used to distinguish objects, and are not intended to limit the scope of the embodiments of this application. They are not used to describe the order or sequence of features. It should be understood that such described objects can be interchanged where appropriate so as to describe solutions other than those in the embodiments of this application.

[0110] (5) In this application, the words “exemplary,” “for example,” etc., are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as an “example” in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the word “example” is intended to present the concept in a concrete manner. In the embodiments of this application, “of,” “corresponding, relevant,” and “corresponding” may sometimes be used interchangeably, and it should be noted that their intended meanings are consistent unless their distinction is emphasized.

[0111] (6) In this application, "instruction" can include direct instruction, indirect instruction, explicit instruction, implicit instruction, etc. When describing an instruction information as indicating A, it can be understood as the instruction information carrying A, carrying the identifier of A, carrying B which is associated with A, carrying the identifier of B which is associated with A, etc. In other words, if the receiving side of an instruction information can determine A based on the instruction information, it can be described as the instruction information indicating A, and the specific method of determination is not limited. When it is understood that the instruction information carries A, "instruction" can be replaced with "includes". In this case, a statement such as "send / receive instruction information, the instruction information indicates A" can be replaced with "send / receive A".

[0112] In this application, the information indicated by the instruction information is called the information to be instructed. In specific implementations, there are many ways to indicate the information to be instructed, such as, but not limited to, directly indicating the information to be instructed, such as the information to be instructed itself or its index. It can also indirectly indicate the information to be instructed by indicating other information, where there is a relationship between the other information and the information to be instructed. It can also indicate only a part of the information to be instructed, while the other parts are known or pre-agreed upon. For example, the instruction of specific information can be achieved by using a pre-agreed (e.g., protocol-defined) arrangement of various pieces of information, thereby reducing instruction overhead to some extent. Furthermore, the information to be instructed can be sent as a whole or divided into multiple sub-information pieces, and the sending period and / or timing of these sub-information pieces can be the same or different.

[0113] (7) In this application, unless otherwise specified or in case of logical conflict, the terms and / or descriptions of different embodiments are consistent and can be referenced by each other. The technical features of different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0114] (8) In this application, the configuration can be signaling configuration, such as radio resource control (RRC) messages, downlink control information (DCI), or system information block (SIB). Optionally, the signaling configuration can be pre-configured signaling configuration given to the terminal device, or configured to the terminal device through pre-configuration. Here, pre-configuration means defining or configuring the values ​​of corresponding parameters in advance in a protocol manner, and storing them in the terminal device during communication. The pre-configured messages can be modified or updated when the terminal device is connected to the network.

[0115] The following describes the communication system to which this application applies.

[0116] The technical solutions provided in this application can be applied to various communication systems, such as 5th generation (5G) or new radio (NR) systems, long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, and LTE time division duplex (TDD) systems. The technical solutions provided in this application can also be applied to future communication networks. Furthermore, the technical solutions provided in this application can be applied to device-to-device (D2D) communication, vehicle-to-everything (V2X) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), and Internet of Things (IoT) communication systems. The technical solutions provided in this application can also be applied to non-terrestrial network (NTN) systems such as inter-satellite communication and satellite communication.

[0117] As an example, a satellite communication system includes a satellite base station and terminal equipment. The satellite base station provides communication services to the terminal equipment. Satellite base stations can also communicate with each other. A satellite can act as a base station or as a terminal device. Here, "satellite" can refer to drones, hot air balloons, low-Earth orbit satellites, medium-Earth orbit satellites, high-Earth orbit satellites, etc. "Satellite" can also refer to non-terrestrial base stations or non-terrestrial equipment.

[0118] As an example, V2X communication can include: vehicle-to-vehicle (V2V) communication, vehicle-to-infrastructure (V2I) communication, vehicle-to-pedestrian (V2P) communication, and vehicle-to-network (V2N) communication.

[0119] In a communication system, a device can send signals to or receive signals from another device. These signals can include information, signaling, or data. The device can also be replaced by an entity, network entity, communication equipment, communication module, node, communication node, etc. This application uses a device as an example for description.

[0120] The terminal device in this application embodiment can be a device or module that accesses the aforementioned communication system and has corresponding communication functions. The terminal device can include various devices with wireless communication capabilities, which can be used to connect people, objects, machines, etc. The terminal device can be widely applied in various scenarios, such as: cellular communication, D2D, V2X, peer-to-peer (P2P), M2M, MTC, IoT, virtual reality (VR), augmented reality (AR), industrial control, autonomous driving, telemedicine, smart grids, smart furniture, smart offices, smart wearables, smart transportation, smart cities, drones, robots, remote sensing, passive sensing, positioning, navigation and tracking, autonomous delivery, etc. The terminal device can be a terminal in any of the above scenarios, such as an MTC terminal, an IoT terminal, etc. Terminal equipment can be user equipment (UE), terminal, fixed equipment, mobile station equipment or mobile equipment, subscriber unit, handheld device, vehicle-mounted equipment, wearable device, cellular phone, smartphone, session initiation protocol (SIP) phone, wireless data card, personal digital assistant (PDA), computer, tablet computer, laptop computer, wireless modem, handset, laptop computer, computer with wireless transceiver capability, smart book, vehicle, satellite, global positioning system (GPS) device, target tracking device, aircraft (e.g., drone, helicopter, multiple helicopters, four helicopters, or airplanes), ship, remote control device, smart home device, industrial equipment, transportation vehicle with wireless communication capability, communication module, circuit or chip, or roadside unit with terminal function, all conforming to the 3GPP standard. The terminal device may be a wireless communication unit (RSU), or a device built into the aforementioned equipment (e.g., a communication module, modem, or chip in the aforementioned equipment), or other processing devices connected to the wireless modem. The terminal device may also be configured with program instructions for performing corresponding communication functions.

[0121] It should be understood that in certain scenarios, a UE can also be used as a base station. For example, a UE can act as a scheduling entity, providing sidelink signaling between UEs in scenarios such as V2X, D2D, or P2P.

[0122] In this embodiment, the device for implementing the functions of a terminal device, i.e., the terminal device, can be the terminal device itself, or it can be any device capable of supporting the terminal device in implementing the functions, such as a chip system, chip, circuit, or communication module (i.e., a communication module that performs communication functions). This device can be installed in the terminal device. In this embodiment, the chip system can be composed of chips, or it can include chips and other discrete devices. Furthermore, the device can also be configured with program instructions for performing corresponding communication functions.

[0123] The network device in this application embodiment can be a device or module with corresponding communication functions. The network device can be a device used to communicate with terminal devices; it can also be called an access network device or a wireless access network device, such as a base station. In this application embodiment, the network device can refer to a radio access network (RAN) node (or device) that connects the terminal device to the wireless network. A base station can broadly encompass, or be replaced by, various names including: NodeB, evolved NodeB (eNB), next-generation NodeB (gNB), relay station, access point, transmitting and receiving point (TRP), transmitter, master station, auxiliary station, multiple standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. A base station can be a macro base station, micro base station, relay node, donor node, or similar, or a combination thereof. A base station can also refer to a communication module, modem, or chip installed within the aforementioned equipment or apparatus. A base station can also be a mobile switching center, a device that performs base station functions in D2D, V2X, and M2M communications, or a device that performs base station functions in future communication systems. A base station can support networks using the same or different access technologies. The embodiments of this application do not limit the specific technologies or device forms used in the network equipment.

[0124] Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move depending on the location of the mobile base station. In other examples, a helicopter or drone can be configured as a device to communicate with another base station.

[0125] In some deployments, the network devices mentioned in the embodiments of this application may be devices including CU, or DU, or devices including CU and DU, or devices with control plane CU nodes (central unit-control plane (CU-CP)) and user plane CU nodes (central unit-user plane (CU-UP)) and DU nodes.

[0126] In some deployments, multiple RAN nodes collaborate to assist terminal devices in achieving wireless access, with different RAN nodes each implementing some of the base station's functions. For example, RAN nodes can be CUs, DUs, CU-CPs, CU-UPs, or radio units (RUs). CUs and DUs can be configured separately or included in the same network element, such as a BBU. RUs can be included in radio equipment or radio units, such as RRUs, AAUs, or RRHs.

[0127] In different systems, CU (or CU-CP and CU-UP), DU, or RU may have different names, but those skilled in the art will understand their meaning. For example, a radio access network can also be an open radio access network (O-RAN or ORAN) architecture. In an O-RAN system, CU can also be called an open CU (openCU, O-CU), DU can also be called an open DU (open DU, O-DU), CU-CP can also be called an open CU-CP (O-CU-CP), CU-UP can also be called an open CU-UP (O-CU-UP), and RU can also be called an open RU (openRU, O-RU). Any of the units among CU (or CU-CP, CU-UP), DU, and RU in this application can be implemented through software modules, hardware modules, or a combination of software modules and hardware modules.

[0128] In this embodiment, the device for implementing the functions of a network device can be a network device itself, or a device capable of supporting the network device in implementing those functions, such as a chip system, chip, circuit, or communication module (i.e., a communication module that performs communication functions). This device can be installed within the network device. In this embodiment, the chip system can be composed of chips, or it can include chips and other discrete devices. Furthermore, the device can be configured with program instructions for performing corresponding communication functions. This embodiment only uses a network device as an example to illustrate the device for implementing the functions of a network device, and does not limit the solution of this embodiment.

[0129] Network devices and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can also be deployed in the air on airplanes, balloons, and satellites. This application does not limit the scenario in which the network devices and terminal devices are located.

[0130] Figure 1 This is a schematic diagram of a wireless communication system 100 applicable to embodiments of this application. For example... Figure 1 As shown, the wireless communication system includes a wireless access network 100. The wireless access network 100 can be a future or later version of the wireless access network, or a traditional (e.g., 5G, 4G, 3G, or 2G) wireless access network. One or more terminal devices (120a-120j, collectively referred to as 120) can be interconnected or connected to one or more network devices (110a, 110b, collectively referred to as 110) within the wireless access network 100. Network elements in the wireless communication system are connected via interfaces (e.g., NG, Xn) or over-the-air interfaces.

[0131] When network devices and terminal devices communicate, the network device can manage one or more cells, and a cell can include at least one terminal device. A cell can be understood as an area within the wireless signal coverage range of the network device.

[0132] Figure 1 This is just an illustration; the wireless communication system may also include other devices, such as core network equipment, wireless relay equipment, and / or wireless backhaul equipment. Figure 1 It is not shown in the middle.

[0133] Figure 2 This is a schematic diagram of an ORAN system 200 applicable to embodiments of this application. The ORAN system includes a core network, access network equipment, and a UE. As an example, the ORAN system may also include... Figure 2 Other components besides those shown are not specifically limited in this application.

[0134] Access network equipment can communicate with the core network (CN) via a backhaul link. Access network equipment can also communicate with the UE via an air interface. Specifically, the BBU in the access network equipment communicates with the core network via a backhaul link. The RU in the access network equipment communicates with at least one UE via an air interface. The BBU communicates with at least one RU via a fronthaul link; the BBU and RU may or may not be co-located. A BBU includes at least one CU and at least one DU, and the CU and DU can communicate via at least one midhaul link.

[0135] Figure 3 This is a schematic diagram of an access network device 300 applicable to embodiments of this application.

[0136] Optionally, the access network equipment includes a CU. The CU is a logical node that carries the radio resource control (RRC), service data adaptation protocol (SDAP) layer, packet data convergence protocol (PDCP) layer, and other control functions of the access network equipment. The CU can connect to network nodes such as the core network through interfaces, such as the E2 interface. The CU may have some core network functions. The CU (e.g., the PDCP layer and / or higher) connects to the DU (e.g., the radio link control (RLC) layer and lower layers of the DU) through interfaces, such as the F1 interface. Optionally, the F1 interface can provide control plane (C-Plane) and user plane (U-Plane) functions (e.g., interface management, system information management, UE context management, RRC message transmission, etc.). F1AP is the application protocol of the F1 interface, defining the signaling procedures of F1 in some examples. The F1 interface supports control plane F1-C and user plane F1-U.

[0137] As an example, a CU includes CU-CP and CU-UP. CU-CP is a logical node carrying the control plane (PDCP-C) layer, which carries the RRC layer and the Packet Data Convergence Protocol layer, and is used to implement the CU's control plane functions. CU-CP can interact with network elements in the core network used to implement control plane functions. These network elements in the core network can be access and mobility function (AMF) network elements, such as the access and mobility management function (AMF) in a 5G system. The AMF network element is responsible for mobility management in the mobile network, such as terminal device location updates, terminal device registration with the network, and terminal device handover. CU-UP is a logical node carrying the user plane (PDCP-U) layer, which carries the SDAP layer and the Packet Data Convergence Protocol layer, and is used to implement the CU's user plane functions. CU-UP can interact with network elements in the core network used to implement user plane functions. These network elements in the core network, such as the user plane function (UPF) in a 5G system, are responsible for data forwarding and receiving in terminal devices. The above CU and DU configurations are merely examples. In practical applications, the functions of the CU and DU can be configured as needed. For instance, the CU or DU can be configured to have more protocol layer functions, or to have only some protocol layer processing functions. For example, some RLC layer functions and protocol layer functions above the RLC layer can be placed in the CU, while the remaining RLC layer functions and protocol layer functions below the RLC layer can be placed in the DU. Furthermore, the functions of the CU or DU can be divided according to service type or other system requirements. For example, based on latency, functions that require low latency can be placed in the DU, while functions that do not require low latency can be placed in the CU.

[0138] Optionally, the access network equipment includes a DU. For example... Figure 3 As shown, a DU is a logical node that carries the RLC layer, medium access control (MAC) layer, higher physical layer (Higher PHY) layer, and other functions. In some examples, a DU can control at least one RU. The DU connects to the RU through interfaces, which can be fronthaul interfaces. In some examples, the Higher PHY layer includes the PHY layer processing, such as forward error correction (FEC) encoding and decoding, scrambling, modulation, and demodulation.

[0139] Optionally, the access network equipment includes a RU. For example... Figure 3 As shown, the RU is a logical node that carries both lower physical layer (PHY) and radio frequency (RF) processing. In some examples, the RU can be a 3GPP transmission reception point (TRP), a remote radiohead (RRH), or other similar entities. In some examples, the Low-PHY includes PHY processing functions such as fast fourier transform (FFT), inverse fast fourier transform (IFFT), digital beamforming, and filtering. The RU communicates with one or more UEs via a radio link.

[0140] The DU and RU can be co-located or not. The DU and RU exchange control plane and user plane information via a fronthaul link through a lower-layer split CUS-plane (LLS-CUS) interface. The LLS-CUS may include a lower-layer split control (LLS-C) interface providing the control plane (C-Plane) and a lower-layer split user (LLS-U) interface, respectively. In some examples, the control plane (C-Plane) refers to real-time control between the DU and RU. The DU and RU exchange management information via an LLS-M interface on the fronthaul link; the management plane (M-Plane) refers to non-real-time management operations between the DU and RU.

[0141] DU and RU can cooperate to implement the functions of the PHY layer. A DU can be connected to one or more RUs. The functions of DU and RU can be configured in various ways depending on the design. For example, a DU can be configured to implement baseband functions, and an RU can be configured to implement mid-RF functions. Another example is that a DU can be configured to implement higher-level functions in the PHY layer, and an RU can be configured to implement lower-level functions in the PHY layer, or to implement both lower-level and RF functions. Higher-level functions in the physical layer can include a portion of the physical layer's functions that are closer to the MAC layer, while lower-level functions in the physical layer can include another portion of the physical layer's functions that are closer to the mid-RF side.

[0142] The above Figures 1 to 3For illustrative purposes only, the embodiments described in this application are not limited thereto.

[0143] To facilitate understanding of the embodiments of this application, the terms and concepts involved in this application will be briefly explained.

[0144] 1. Multiple-input multiple-output (MIMO) technology: Utilizing spatial resources, it can enable signals to achieve array gain, multiplexing and diversity gain, and interference cancellation gain in space without increasing system bandwidth, thus multiplying the capacity and spectral efficiency of the communication system. For example, in a 5G NR system, the system can use multiple antennas at the transmitting and receiving ends to support up to 12 layers of transmission.

[0145] 2. Channel estimation: The process of reconstructing the received signal to compensate for channel fading and noise. It uses a reference signal known to both the transmitter and receiver to track the time and frequency domain changes of the channel. The reference signal, also known as the pilot signal or reference signal (RS), is distributed across different resource elements (REs) in the time-frequency two-dimensional space within the orthogonal frequency division multiplexing (OFDM) symbol set, and has known amplitude and phase. For example, in the uplink and downlink, to achieve channel quality measurement and data demodulation in high-order multi-antenna systems, NR systems define various reference signals, including but not limited to: pilot reference signals (e.g., channel state information-reference signal (CSI-RS) and / or sounding reference signal (SRS)), demodulation reference signals (DMRS), tracking reference signals (TRS), phase tracking reference signals (PT-RS), positioning reference signals (PRS), or sensing reference signals (SeRS), etc. Optionally, the pilot reference signal can be called a pilot or pilot signal, where the pilot signal is used for channel estimation or channel sounding. The reference signals in this application can also be reference signals other than those listed above that can be carried in orthogonal frequency division multiplexing (OFDM) symbols, which will not be described further here. DMRS is used for demodulation of the physical downlink share channel (PDSCH) or physical uplink share channel (PUSCH). CSI-RS is used for downlink channel information measurement and reporting of information such as channel quality indicator (CQI), precoding matrix indicator (PMI), and rank indicator (RI).SRS is used for uplink channel information measurement. Through uplink channel information, the base station can determine uplink precoding, dynamically adjust uplink resource allocation, and determine downlink precoding in time division duplex (TDD) systems.

[0146] 3. Radio Frequency Channel Map (RF map): Also known as a radio frequency map, channel map, or channel knowledge map, the RF map integrates massive historical data from all terminal devices within a region to construct a channel knowledge base reflecting the wireless environment characteristics of that area. This allows for the direct acquisition of environmental priors based on the location or virtual location information of the terminal devices, avoiding redundant online environmental sensing and channel acquisition. This enables rapid, real-time predictive reasoning of channel knowledge, significantly improving communication and sensing performance. Channel knowledge can include channel state information, communication transmission parameters, etc.

[0147] 4. Physical Downlink Control Channel (PDCCH): Used to transmit DCI from the physical layer (also known as layer 1) or data link layer (also known as layer 2). The DCI includes downlink scheduling information and uplink scheduling information. The terminal device listens to the PDCCH through blind detection and parses the PDCCH to determine which time domain and frequency domain resources the terminal device receives downlink data or control information on, or to determine which time domain and frequency domain resources the terminal device sends uplink data or control information on.

[0148] PDCCH resources are allocated using control resource sets (CORESETs). A CORESET is the basic allocation unit for PDCCH, consisting of multiple resource element groups (REGs) and corresponding control channel elements (CCEs). Each terminal device can be configured with 1 to 3 CORESETs. The terminal device can listen for and acquire PDCCH candidate resources in the time and frequency domain resources associated with its configured CORESET. A CORESET occupies multiple resource blocks (RBs) in the frequency domain and 1 to 3 symbols in the time domain. For example, in an NR system, PDCCH can use {1, 2, 4, 8, 16} consecutive CCEs, where the number of CCEs used is called the aggregation level. PDCCH is configured with a certain slot period. Each CORESET is associated with a mapping relationship from CCE to REG, and the mapping between CCE and REG can be interleaved or non-interleaved.

[0149] In NR, information such as the starting OFDM symbol number of the PDCCH and the PDCCH listening period is encapsulated in the Search Space. The Search Space includes the UE-specific search space (USS) and the common search space (CSS). The USS is used to transmit scheduling information and control commands specific to the UE; the CSS is used to transmit common information, such as system information and random access responses.

[0150] PDCCH transmission parameters include: the number of PDCCH ports, the modulation scheme of PDCCH, the transmission mode of PDCCH, the aggregation method of PDCCH control channel element (CCE), the demodulation reference signal (DMRS) ports and frequency domain density of PDCCH.

[0151] 5. Physical downlink control channel (PUCCH): Used to transmit UCI, which includes acknowledgment (ACK) or negative acknowledgment (NACK) feedback information for hybrid automatic repeat request (HARQ) demodulation for physical downlink shared channel (PDSCH), channel state information (CSI), and uplink scheduling request (SR) information.

[0152] NR supports both long and short PUCCH formats. Long PUCCH occupies 4–14 symbols in the time domain, with configurable time-domain and frequency-domain positions and resources. Short PUCCH occupies 1 or 2 symbols in the time domain, also with configurable time-domain and frequency-domain positions and resources. Short PUCCH offers faster HARQ responses and channel state feedback compared to long PUCCH, making it suitable for ultra-low latency scenarios. Long PUCCH provides stronger coverage compared to short PUCCH, making it suitable for coverage scenarios. NR supports five PUCCH formats: PUCCH format 0 / 1 / 2 / 3 / 4. PUCCH is transmitted via a single port, with port number 2000. PUCCH modulation is either quadrature phase shift keying (QPSK) or π / 2 binary phase shift keying (BPSK).

[0153] PUCCH transmission parameters include: the number of PUCCH ports, the modulation scheme of PUCCH, the transmission mode of PUCCH, the aggregation method of PUCCH control channel element (CCE), the demodulation reference signal (DMRS) ports and frequency domain density of PUCCH.

[0154] Currently, to ensure the transmission latency and reliability of PDCCH and PUCCH, low-order transmission parameters are used for data transmission. For example, the antenna port numbering for PDCCH or PUCCH starts from 2000, and there is only one PDCCH or PUCCH port; another example is that the modulation method for PDCCH or PUCCH is QPSK. However, with the increase in DCI or UCI signaling overhead, the required PDCCH or PUCCH capacity has also increased significantly. Under the requirements of low transmission latency and high capacity, using low-order transmission parameters to transmit PDCCH or PUCCH cannot meet the high demand for PDCCH or PUCCH capacity.

[0155] In view of this, this application provides a communication method and a communication device that can determine the transmission parameters more suitable for the terminal device to transmit PDCCH or PUCCH based on the area where the terminal device is located and the correspondence between the area and the transmission parameters, so that when the channel conditions are good, higher-order transmission parameters can be used to transmit PDCCH or PUCCH, thereby improving the capacity of the control channel.

[0156] The methods provided by the embodiments of this application will be described in detail below with reference to the accompanying drawings. The embodiments provided by this application can be applied to the scenarios shown in the above figures and are not limited thereto. Furthermore, the terms used below are as explained above and will not be repeated hereafter.

[0157] Figure 4 This is a schematic diagram of a communication method 400 provided in an embodiment of this application. For ease of description, a network device and a terminal device are used as examples of the execution subjects in this interactive illustration, but this application does not limit the execution subjects in the interactive illustration. For example, the method executed by the network device can also be implemented by a module (e.g., a circuit, chip, or chip system) in the network device, or a logical node, logical module, or software that can implement all or part of the network functions; the method executed by the terminal device can also be implemented by a communication module in the terminal device or a circuit or chip (e.g., a modem chip (also known as a baseband chip), or a SoC chip containing a modem core, or a SIP chip) in the terminal device responsible for communication functions. In addition, the steps described below as being executed by a single execution subject can also be divided into being executed by multiple execution subjects, which can be logically and / or physically separated. Figure 4 The method 400 shown may include the following steps.

[0158] S410, the network device obtains the first set of transmission parameters.

[0159] The first set of transmission parameters is determined by the first region where the terminal device is located and the correspondence between multiple regions and multiple sets of transmission parameters. The multiple regions include the first region where the terminal device is located, and the multiple sets of transmission parameters include the first set of transmission parameters. The first set of transmission parameters corresponds to the first region.

[0160] Each set of transmission parameters is used to transmit either the PDCCH or PUCCH. Each set of transmission parameters includes at least one of the following: the number of ports of the PDCCH, the modulation scheme of the PDCCH, the transmission method of the PDCCH, the CCE aggregation level of the PDCCH, the number of ports of the demodulation reference signal (DMRS) in the PDCCH, the resource density of the demodulation reference signal (DMRS) in the PDCCH, the modulation and coding scheme (MCS) of the PDCCH, the signal-to-noise ratio (SNR) of the PDCCH, and the channel quality indication (CQI) of the PDCCH. Alternatively, each set of transmission parameters includes at least one of the following: the number of ports of the PUCCH, the modulation scheme of the PUCCH, the transmission method of the PUCCH, the CCE aggregation level of the PUCCH, the number of ports of the demodulation reference signal (DMRS) in the PUCCH, the resource density of the demodulation reference signal (DMRS) in the PUCCH, the MCS of the PUCCH, the SNR of the PUCCH, and the CQI of the PUCCH.

[0161] Wherein, the number of PDCCH ports or PUCCH ports can be a positive integer greater than or equal to 1; the modulation method of PDCCH or PUCCH can include at least one of binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), quadrature amplitude modulation (QAM), 16QAM, 64QAM, 256QAM, and 1024QAM; the number of DMRS ports in PDCCH is a positive integer greater than or equal to 1; the transmission method of PDCCH can be transmit diversity, spatial division multiplexing, etc.; the CCE aggregation level of PDCCH or PUCCH can be any one of 1, 2, 4, 8, and 16; the MCS of PDCCH or PUCCH can be an integer greater than or equal to 0; and the CQI of PDCCH or PUCCH can be an integer greater than or equal to 0.

[0162] For example, the multiple regions correspond one-to-one with the multiple sets of transmission parameters. Each set of transmission parameters includes multiple transmission parameters, and the types of transmission parameters included in each set can be the same or different. The number of transmission parameters included in each set can be the same or different. Some sets of transmission parameters may be the same, or each set of transmission parameters may be different.

[0163] For example, the first set of transmission parameters includes at least one of the following: the number of ports of the PDCCH, the modulation scheme of the PDCCH, at least one transmission scheme of the PDCCH, the aggregation level of the Control Channel Unit (CCE) of the PDCCH, and the number of ports of the Demodulation Reference Signal (DMRS) in the PDCCH; or the first set of transmission parameters includes at least one of the following: the number of ports of the PUCCH, at least one modulation scheme of the PUCCH, at least one transmission scheme of the PUCCH, the aggregation level of the Control Channel Unit (CCE) of the PUCCH, and the number of ports of the Demodulation Reference Signal (DMRS) in the PUCCH, wherein the number of ports of the PDCCH or the number of ports of the PUCCH is greater than or equal to 1, and the number of ports of the DMRS is greater than or equal to 1. Further, the network device can transmit the PDCCH or PUCCH according to the first set of transmission parameters.

[0164] Optionally, before obtaining the first set of transmission parameters, method 400 further includes: the network device determining the correspondence. The correspondence and how it is determined are described in detail below.

[0165] For example, this correspondence can be achieved by network devices acquiring multiple physical environment information and multiple wireless channel data within the cell's coverage area using sensing or measurement, and dividing the cell into multiple regions. Based on artificial intelligence (AI) technology or non-AI technology, deterministic channel feature information characterizing the physical environment of each region is extracted from the multiple physical environment information and multiple wireless channel data corresponding to that region. Based on the channel feature information, a set of PDCCH transmission parameters or a set of PUCCH transmission parameters corresponding to or adapted to each region is inferred, thereby constructing a correspondence between multiple regions and multiple sets of PDCCH transmission parameters or multiple regions and multiple sets of PUCCH transmission parameters. It should be noted that the correspondence between multiple regions and multiple sets of transmission parameters can be understood as a one-to-one correspondence between multiple regions and multiple sets of transmission parameters; that is, each region corresponds to a set of transmission parameters.

[0166] Optionally, the multiple regions are associated with multiple location information, including the location of the terminal device; or the multiple regions are associated with multiple channel feature information, including the channel feature information of the terminal device.

[0167] In one implementation, the entire community area is divided based on physical environment information. In this case, the divided areas can be understood as multiple geographical regions or multiple location information, such as... Figure 5As shown, the cell area is divided into several small grids, each corresponding to a set of PDCCH transmission parameters or a set of PUCCH transmission parameters. The first area is the area where the terminal device is located. Specifically, the network device obtains the channel characteristic information of a certain small grid through sensing or measurement, or obtains the wireless channel data of a certain small grid through sensing or measurement. Channel characteristic information representing that small grid is extracted from the wireless channel data, and a set of transmission parameters adapted to that small grid can be determined based on the channel characteristic information.

[0168] In one example, the channel feature information is multi-path component (MPC) information, which includes the number of multipaths. The number of ports for PDCCH and PDCCHDMRS is determined based on the number of multipaths. Assuming there are 10 multipaths, of which 5 are high-energy paths, then the number of ports for PDCCH or PUCCH is 5, and the number of ports for PDCCHDMRS or PUCCHDMRS is 5.

[0169] In one example, the MPC information includes multipath power and noise power or multipath SNR. Based on the multipath power and noise power or multipath SNR, the SNR and CQI of the PDCCH or PUCCH can be determined, thereby enabling the determination of the modulation order and code rate of the PDCCH or PUCCH. The modulation order of the PDCCH or PUCCH can be understood as the order corresponding to the modulation scheme, which can include quadrature phase shift keying (QPSK) and quadrature amplitude modulation (QAM). For example, if the multipath SNR is 8.95 dB, the resulting modulation order of the PDCCH or PUCCH is 16QAM, and the code rate is 0.6426. Alternatively, the modulation order and CCE aggregation level of the PDCCH or PUCCH can be determined based on the multipath power and noise power or multipath SNR. For example, if the multipath SNR is 8.95dB, the modulation order of the resulting PDCCH or PUCCH is 16QAM, and the CCE aggregation level of the resulting PDCCH or PUCCH is 4. Alternatively, the transmission MCS value of the PDCCH or PUCCH can be determined based on the multipath power and noise power or the multipath SNR. For example, if the SNR is 8.95dB, the MCS value is 10. This allows us to obtain the correspondence between each region and each set of transmission parameters, thus establishing the relationship between multiple regions and multiple sets of transmission parameters.

[0170] In one implementation, the entire cell area is divided based on wireless channel data. Multiple wireless channel data points are acquired through measurement or sensing of the entire cell. These data points are then grouped into multiple sets of wireless channel data based on a similarity index. These sets of wireless channel data correspond to multiple areas within the entire cell. Furthermore, deterministic channel feature information characterizing the physical environment of each area is extracted from the multiple data points corresponding to each area. In this case, the divided areas can be understood as areas associated with multiple sets of channel feature information; that is, multiple areas are associated with multiple sets of channel feature information, including the channel feature information of the terminal device. Based on the channel feature information corresponding to each area, a set of transmission parameters corresponding to each area is determined, thus obtaining the relationship between multiple areas and multiple sets of transmission parameters.

[0171] The channel characteristic information includes at least one of the following: MPC information, reference channel matrix, and channel quality information.

[0172] For example, the MPC information includes at least one of the following: multipath delay, power, azimuth angle of departure (AOD), zenith angle of department (ZOD), azimuth angle of arrival (AOA), zenith angle of arrival (ZOA), initial phase, Doppler information, polarization information, number of multipaths, terminal device moving speed, and noise power. Polarization may include the cross-polarization ratio (XPR). The multipath SNR can be understood as the ratio of multipath power to noise power. The multipath can be multiple sub-paths or a multipath cluster; this application does not limit this.

[0173] For example, the reference channel matrix includes at least one of the following: a channel coefficient matrix, a precoding matrix, a set of basis vectors for obtaining channel information, and a set of basis vectors for obtaining the precoding matrix.

[0174] In this embodiment, the SNR of the transmitted data stream can be calculated using the reference channel matrix H. Specifically, the signal power of the transmitted data stream is calculated based on the reference channel matrix, and then the noise power is combined to obtain the SNR of the transmitted data stream.

[0175] For example, channel quality information includes CQI, the rank of the reference channel matrix, SNR, reference signal receiving power (RSRP), and channel bandwidth.

[0176] As an example, when the MPC information specifically includes multipath SNR and the channel quality information specifically includes SNR or CQI, the network device can determine a set of transmission parameters based on the MPC information, reference channel matrix information, and channel quality information, such as the transmission mode of PDCCH or PUCCH, for example, spatial multiplexing or transmit diversity.

[0177] As an example, when the MPC information specifically includes the number of multipaths (or the number of strong paths), the channel quality information specifically includes the rank, and the reference channel matrix information specifically includes the rank of the reference channel matrix, the network device can determine a set of transmission parameters based on the MPC information, the reference channel matrix information, and the channel quality information, such as the number of ports of the PDCCH or PUCCH, or the number of ports of the DMRS of the PDCCH or PUCCH. For example, the PDCCH is transmitted on multiple antenna ports, or the PDCCH is transmitted on one port.

[0178] As an example, when MPC information specifically includes one or more of multipath power, noise power, multipath SNR, and the moving speed of the terminal device, and channel quality information specifically includes one or more of SNR and CQI, and reference channel matrix information specifically includes the SNR of the transport stream, the network device can determine a set of transmission parameters based on MPC information, reference channel matrix information, and channel quality information. These parameters may include, for example, the modulation order of the PDCCH or PUCCH, the CCE aggregation method of the PDCCH or PUCCH, the MCS of the PDCCH or PUCCH, the SNR of the PDCCH or PUCCH, and the CQI of the PDCCH or PUCCH. For instance, Table 1 shows the mapping relationship between channel quality information CQI and the modulation order and CCE aggregation level of the PDCCH or PUCCH.

[0179] Table 1

[0180]

[0181]

[0182] In Table 1, the larger the CQI index, the better the channel quality, and consequently the higher the modulation order of PDCCH or PUCCH, or the lower the CCE aggregation level of PDCCH or PUCCH.

[0183] For example, multiple regions correspond to multiple CQIs, and each region corresponds one-to-one with the other CQI. Based on the CQI corresponding to each region and the correspondence in Table 1, the modulation order of the PDCCH or PUCCH corresponding to each region and the CCE aggregation level of the PDCCH or PUCCH can be determined.

[0184] As an example, when the MPC information specifically includes the delay power spectrum, the correlation of channel changes in the frequency domain is determined based on the reference channel information, and the channel quality information specifically includes the channel-related bandwidth, the network device can determine a set of transmission parameters based on the MPC information, the reference channel matrix information, and the channel quality information, such as the DMRS frequency domain density of the PDCCH or PUCCH.

[0185] In this way, by determining a set of transmission parameters corresponding to or adapted to each region based on the channel characteristic information of each region, the correspondence between multiple regions and multiple sets of transmission parameters can be obtained. For example, if multiple regions include region 1, region 2, region 3, and region 4, and multiple sets of transmission parameters include group A, group B, group C, and group D, then region 1 corresponds to group A, region 2 corresponds to group B, region 3 corresponds to group C, and region 4 corresponds to group D. The above correspondence between multiple regions and multiple sets of transmission parameters can also be represented by a table. Taking the transmission parameters of PDCCH as an example, and taking the transmission parameters of groups A to D corresponding to regions 1 to 4 in Table 2 as an example, the four sets of transmission parameters included in Table 2 all include the number of PDCCH ports, the modulation method of PDCCH, and the CCE aggregation level of PDCCH.

[0186] Understandably, the transmission parameters of PUCCH can also be described in a similar manner to Table 2, simply by replacing PDCCH with PUCCH in Table 2.

[0187] Table 2

[0188]

[0189] It should be noted that Table 2 is only an example to illustrate the correspondence between multiple regions and multiple sets of transmission parameters, and does not constitute a limitation on the embodiments of this application. The region index and the contents of each set of transmission parameters are not limited to the transmission parameters shown in Table 2. In the embodiments of this application, the number of transmission parameter items included in each set of transmission parameters can be any combination of the following: the number of ports of PDCCH, the modulation method of PDCCH, the transmission method of PDCCH, the CCE aggregation level of PDCCH, the number of ports of demodulation reference signal DMRS in PDCCH, the resource density of demodulation reference signal DMRS in PDCCH, the MCS of PDCCH, the SNR of PDCCH, and the CQI of PDCCH. Alternatively, the number of transmission parameter items included in each set of transmission parameters can be any combination of the following: the number of ports of PUCCH, the modulation scheme of PUCCH, the transmission scheme of PUCCH, the CCE aggregation level of PUCCH, the number of ports of the demodulation reference signal DMRS in PUCCH, the resource density of the demodulation reference signal DMRS in PUCCH, the MCS of PUCCH, the SNR of PUCCH, and the CQI of PUCCH.

[0190] It should be noted that, in the embodiments of this application, the correspondence between multiple regions and multiple sets of transmission parameters can also be referred to as a radio frequency channel map. For a description of the radio frequency channel map, please refer to the introduction of the terminology above.

[0191] It should also be noted that the correspondence between the aforementioned multiple regions and multiple sets of transmission parameters can be predefined or preconfigured. Specifically, there is a one-to-one correspondence between the multiple regions and their indexes. The index of each region within these multiple regions can be predefined or preconfigured; that is, there is a correspondence between the multiple regions and their indexes, and this correspondence can be predefined or preconfigured.

[0192] The following describes how network devices obtain the first set of transmission parameters, combining methods one and two.

[0193] Method 1: The network device obtains the first set of transmission parameters from the terminal device. For details on the implementation of Method 1, please refer to the description of steps S610 to S630 in Method 600 below; it will not be repeated here.

[0194] Method 2: The network device determines the first set of transmission parameters itself. For details on the implementation of Method 2, please refer to the description of steps S810 to S840 in Method 800 below; it will not be repeated here.

[0195] S420, The terminal device obtains the first set of transmission parameters.

[0196] For a description of the first set of transmission parameters, please refer to step S410 above, which will not be repeated here.

[0197] The terminal device obtains the first set of transmission parameters in two ways: Method 1 and Method 2.

[0198] Method 1: The terminal device determines the first set of transmission parameters itself. For details on the implementation of Method 1, please refer to the description of steps S610 to S630 in Method 600 below; it will not be repeated here.

[0199] Method 2: The terminal device obtains the first set of transmission parameters from the network device. For details on the implementation of Method 1, please refer to the description of steps S810 to S840 in Method 800 below; it will not be repeated here.

[0200] Furthermore, method 400 is applicable to both uplink and downlink transmission scenarios. For both uplink and downlink transmission scenarios, the subsequent steps of method 400 are described in scenario one and scenario two, respectively.

[0201] Scenario 1: Downlink transmission scenario, specifically including step S430a.

[0202] S430a: The network device sends a PDCCH to the terminal device.

[0203] Correspondingly, the terminal device receives the PDCCH from the network device.

[0204] In this process, the network device sends the PDCCH according to the first set of transmission parameters, and the terminal device receives the PDCCH according to the first set of transmission parameters.

[0205] In one implementation, after the network device determines the first set of transmission parameters, it uses the first set of transmission parameters to transmit the PDCCH. Specifically, the PDCCH is transmitted using the transmission parameters indicated by the first set of transmission parameters.

[0206] In one implementation, after obtaining the first set of transmission parameters from the terminal device, the network device determines that it will not use the first set of transmission parameters to transmit the PDCCH. That is, when obtaining the first set of transmission parameters, the network device, considering its own service requirements, considers that the first set of transmission parameters provided by the terminal device does not meet the service requirements. Therefore, it will instruct the terminal device to send a new set of transmission parameters. A detailed description of the network device instructing the terminal device to send a new set of transmission parameters can be found in step S640 of method 600 below, which describes a transmission set different from the first set of transmission parameters; it will not be repeated here.

[0207] For details regarding step S430a, please refer to the description of step S650 in method 600 below, which will not be repeated here.

[0208] Scenario 2: Uplink transmission scenario, specifically including step S430b.

[0209] S430b: The terminal device sends a PUCCH to the network device.

[0210] Correspondingly, network devices receive PUCCH messages from terminal devices.

[0211] The terminal device sends the PUCCH according to the first set of transmission parameters, and the network device receives the PUCCH according to the first set of transmission parameters.

[0212] In one implementation, after the terminal device obtains the first set of transmission parameters, it uses the first set of transmission parameters to transmit the PUCCH.

[0213] In one implementation, after obtaining the first set of transmission parameters from the terminal device, the network device determines that it will not use the first set of transmission parameters to transmit the PUCCH. That is, when obtaining the first set of transmission parameters, the network device, considering its own service requirements, considers that the first set of transmission parameters provided by the terminal device does not meet the service requirements. Therefore, it will instruct the terminal device to send a new set of transmission parameters. A detailed description of the network device instructing the terminal device to send a new set of transmission parameters can be found in step S640 of method 600 below, which describes a transmission set different from the first set of transmission parameters; it will not be repeated here.

[0214] For details regarding step S430b, please refer to the description of step S750 in method 700 below, which will not be repeated here.

[0215] Optionally, method 400 further includes: the network device sending sixth information to the terminal device. Correspondingly, the terminal device receives the sixth information from the network device.

[0216] The sixth piece of information is used to instruct the terminal device to switch transmission modes. The transmission modes include a first transmission mode and a second transmission mode. The first transmission mode is a mode of transmitting the PDCCH according to the first set of transmission parameters or a mode of transmitting the PUCCH according to the first set of transmission parameters. The second transmission mode is a mode of transmitting the PDCCH according to a predefined or preconfigured set of transmission parameters or a mode of transmitting the PUCCH according to a predefined or preconfigured set of transmission parameters.

[0217] For example, channel quality is dynamic. For instance, due to environmental factors, channel quality may change from high to low. Using the previous high-order transmission parameters in this case might waste resources; conversely, changing from low to high channel quality might mean that the current transmission parameters cannot meet communication requirements. Therefore, the transmission mode of the control channel can be flexibly switched according to the channel quality during communication. High-order transmission parameters can be understood as: the modulation order of the PDCCH or PUCCH is high; the number of ports on the PDCCH or PUCCH is multiple; the number of ports on the PDCCH's DMRS or PUCCH's DMRS is multiple, etc. Low-order transmission parameters can be understood as: the modulation order of the PDCCH or PUCCH is QPSK; the number of ports on the PDCCH or PUCCH is one; the number of ports on the PDCCH's DMRS or PUCCH's DMRS is one, etc.

[0218] For example, network services are dynamic. For instance, changes in services may increase the required control channel capacity. In this case, using the previous low-order transmission parameters would no longer meet the communication needs. Conversely, a decrease in the required control channel capacity could lead to wasted resources. Therefore, during communication, the transmission mode of the control channel can be flexibly switched according to the capacity requirements.

[0219] Specifically, two transmission modes are defined:

[0220] First transmission mode: Network devices and terminal devices transmit PDCCH or PUCCH according to the first set of transmission parameters.

[0221] For example, the first set of transmission parameters indicates that the number of PDCCH or PUCCH ports is 2, and the number of DMRS ports in PDCCH or PUCCH is 3.

[0222] Second transmission mode: Network devices and terminal devices transmit PDCCH or PUCCH according to a pre-configured or pre-defined set of transmission parameters.

[0223] Among them, the pre-configured or predefined set of transmission parameters conforms to the traditional PDCCH or PUCCH transmission mode in NR. In other words, the pre-configured or predefined set of transmission parameters is a fixed set of transmission parameters.

[0224] It should be noted that the transmission of PDCCH or PUCCH between network devices and terminal devices based on the first set of transmission parameters can be understood as follows: the network device sends PDCCH to the terminal device based on the first set of transmission parameters, and the terminal device receives PDCCH from the network device based on the first set of transmission parameters; or the terminal device sends PUCCH to the network device based on the first set of transmission parameters, and the network device receives PUCCH from the terminal device based on the first set of transmission parameters.

[0225] For example, the sixth information is carried in RRC signaling or DCI signaling. The sixth information is used to instruct the terminal device to switch transmission modes. This can be understood as the sixth information instructing the terminal device to use either the first or second transmission mode, or the sixth information instructing the terminal device to switch between the first and second transmission modes.

[0226] In one example, the sixth information includes one bit. When this bit is 1, it instructs the terminal device to use the first transmission mode; when this bit is 0, it instructs the terminal device to use the second transmission mode. Conversely, when this bit is 0, it instructs the terminal device to use the second transmission mode, and when this bit is 0, it instructs the terminal device to use the first transmission mode. Before receiving the sixth information, the terminal device can use either the second or the first transmission mode; this application does not limit this choice.

[0227] In one example, the sixth information contains one bit. When this bit is 1, it instructs the terminal device to switch from the first transmission mode to the second transmission mode; when this bit is 0, it instructs the terminal device to switch from the second transmission mode to the first transmission mode. Alternatively, the bit can be 0 to instruct the terminal device to switch from the first transmission mode to the second transmission mode, and 1 to instruct the terminal device to switch from the second transmission mode to the first transmission mode.

[0228] In other words, in this embodiment of the application, the 1 bit included in the sixth information can instruct the terminal device to switch the transmission mode. For example, when the bit is 1, it instructs the terminal device to switch from one mode to another; or conversely, when the bit is 0, it instructs the terminal device to switch from one mode to another.

[0229] It should be noted that the sixth information may also include multiple bits, such as 2 bits. This application does not limit the size of the bits included in the sixth information.

[0230] It should also be noted that if the network device sends the sixth information after step S430b in method 400, the terminal device will switch the transmission mode from the first transmission mode to the second transmission mode. In actual implementation, when the network device and the terminal device are transmitting PDCCH and PUCCH using a pre-configured or predefined set of transmission parameters, that is, when the terminal device and the network device are transmitting PDCCH and PUCCH using the second transmission mode, if the channel quality improves again, the pre-configured or predefined set of transmission parameters may not be sufficient to meet communication requirements. In this case, the device can switch back to the first transmission mode according to the indication of the sixth information. In this way, the network device can flexibly switch the transmission mode according to the channel quality, thereby ensuring communication performance.

[0231] Optionally, before the network device obtains the first set of transmission parameters and / or before the terminal device obtains the first set of transmission parameters, method 400 further includes: the terminal device sending seventh information to the network device. Correspondingly, the network device receives the seventh information from the terminal device.

[0232] The seventh piece of information is used to indicate whether the terminal device can use the first transmission mode to transmit the PDCCH or the PUCCH.

[0233] For example, when the seventh information indicates that the terminal device can use the first transmission mode to transmit the PDCCH or the PUCCH, the network device or the terminal device can transmit the PDCCH or the PUCCH according to the first set of transmission parameters. When the seventh information indicates that the terminal device cannot use the first transmission mode to transmit the PDCCH or the PUCCH, the network device or the terminal device can transmit the PDCCH or the PUCCH according to a pre-configured or predefined set of transmission parameters, that is, using a low-order, fixed set of transmission parameters to transmit the PDCCH or the PUCCH.

[0234] In the embodiments of this application, based on the prior correspondence between multiple regions and multiple sets of transmission parameters, and the region to which the terminal device currently belongs, the network device or the terminal device can improve the flexibility of determining the transmission parameters of PDCCH or PUCCH by obtaining a set of transmission parameters of PDCCH or PUCCH suitable for the current channel or environment. This allows higher-order transmission parameters to be used for PDCCH or PUCCH transmission when the channel conditions are good, thereby increasing the capacity of the control channel and thus improving communication efficiency.

[0235] Next, in conjunction with the appendix Figure 6 and attached Figure 7The implementation process of the network device in mode 1 of the above communication method 400 obtaining the first set of transmission parameters from the terminal device is described in detail, as well as the implementation process of the terminal device in mode 1 of the above communication method 400 determining the first set of transmission parameters itself.

[0236] Figure 6 This is a schematic diagram of a communication method 600 provided in an embodiment of this application. For ease of description, a network device and a terminal device are used as examples of the execution subjects in this interactive illustration, but this application does not limit the execution subjects in the interactive illustration. For example, the method executed by the network device can also be implemented by a module (e.g., a circuit, chip, or chip system) in the network device, or a logical node, logical module, or software that can implement all or part of the network functions; the method executed by the terminal device can also be implemented by a communication module in the terminal device or a circuit or chip (such as a modem chip (also known as a baseband chip), or a SoC chip containing a modem core, or a SIP chip) in the terminal device responsible for communication functions. In addition, the steps described below as being executed by a single execution subject can also be divided into being executed by multiple execution subjects, which can be logically and / or physically separated. Figure 6 The method 600 shown may include the following steps.

[0237] It should be noted that, Figure 6 Method 600 is applicable to downlink transmission scenarios.

[0238] S610, the network device sends the first information to the terminal device.

[0239] Correspondingly, the terminal device receives the first information from the network device.

[0240] The first piece of information is used to indicate the correspondence between multiple regions and multiple sets of transmission parameters.

[0241] For example, the first information can be carried in RRC signaling or DCI signaling.

[0242] The description of the correspondence between multiple regions and multiple sets of transmission parameters can be found in step S410 above, and will not be repeated here.

[0243] S620. The terminal device determines the first set of transmission parameters based on the correspondence between multiple regions and multiple sets of transmission parameters, as well as the first region.

[0244] Specifically, after receiving the first information, the terminal device can determine the set of transmission parameters corresponding to the first region, i.e., the first set of transmission parameters, based on the correspondence between multiple regions and multiple sets of transmission parameters in the first information. Taking Table 2 above as an example, the correspondence between region 1 and the transmission parameters of group A is called the first correspondence, the correspondence between region 2 and the transmission parameters of group B is called the second correspondence, the correspondence between region 3 and the transmission parameters of group C is called the third correspondence, and the correspondence between region 4 and the transmission parameters of group D is called the fourth correspondence. When the index of the region corresponding to the first region is region 1, the terminal device can determine the A-th group of transmission parameters corresponding to region 1 based on the first correspondence between region 1 and the first correspondence. That is, the group of transmission parameters corresponding to region 1 indicates that the number of ports of the PDCCH is 2, the modulation mode of the PDCCH is 16QAM, and the CCE aggregation level of the PDCCH is 2. Similarly, when the index of the region corresponding to the first region is region 2, the terminal device finds the B-th group of transmission parameters corresponding to region 2 based on the second correspondence between region 2 and the second correspondence. That is, the group of transmission parameters corresponding to region 2 indicates that the number of ports of the PDCCH is 1, the modulation mode of the PDCCH is 16QAM, and the CCE aggregation level of the PDCCH is 2. And so on. If the index of the region corresponding to the first region where the terminal device is located is region 3, then the C-th group of transmission parameters can be determined based on the third correspondence between region 3 and the third correspondence. If the index of the region corresponding to the first region where the terminal device is located is region 4, then the D-th group of transmission parameters can be determined based on the fourth correspondence between region 4 and the fourth correspondence. In other words, the terminal device determines its own first region, and then, based on the above correspondence between multiple regions and multiple groups of transmission parameters, it can determine the first group of transmission parameters corresponding to that first region.

[0245] Wherein, the first region is the region where the terminal device is located, then optionally, method 400 further includes: the terminal device determining the first region where the terminal device is located.

[0246] For example, determining the first area where the terminal device is located includes: determining the first area where the terminal device is located based on the location of the terminal device. The location of the terminal device can be measured by the terminal device. For example, the terminal device measures its own location information and then determines the first area based on that location information. Existing technologies regarding how the terminal device measures its own location are relevant and will not be elaborated upon here.

[0247] For example, determining the first region where the terminal device is located includes: determining the first region based on the index corresponding to the first region. The index of the first region may be pre-configured by the network device, in which case there is a one-to-one correspondence between the indices of multiple regions and the multiple regions themselves. After the network device sends the correspondence between multiple regions and multiple sets of transmission parameters to the terminal device, the terminal device can determine its own location in the first region based on the index corresponding to the determined first region.

[0248] For example, a terminal device determines its location in a first region by: determining the first region based on its channel characteristic information. The channel characteristic information of the terminal device includes at least one of the following: MPC information, a reference channel matrix, and channel quality information. Since the terminal device can determine its own location in the first region based on its own channel characteristic information, the first region can be considered associated with the terminal device's channel characteristic information.

[0249] It should be noted that the first area where the terminal device is located can also be determined by the network device and sent to the terminal device. The method by which the network device determines the first area can be found in the description of step S810 in method 800 below, and will not be repeated here. Regarding the incomplete description of the first set of transmission parameters, please refer to step S410 above, and will not be repeated here.

[0250] Furthermore, based on the first region where it is located, the terminal device determines the first set of transmission parameters corresponding to the first region from the correspondence between multiple regions and multiple sets of transmission parameters, and sends the first set of transmission parameters to the network device so that the network device can obtain the first set of transmission parameters from the terminal device.

[0251] S630, the terminal device sends the second information to the network device.

[0252] Correspondingly, the network device receives the second information from the terminal device.

[0253] The second information is used to indicate the first set of transmission parameters, which are determined by the terminal device based on the first region and the corresponding relationship.

[0254] In this way, the network device obtains the first set of transmission parameters determined by the terminal device. Furthermore, the network device can determine whether the first set of transmission parameters indicated by the second information meets its own service requirements. For example, if the first set of transmission parameters indicates that the number of PDCCH ports is 2, but the network device requires 3 PDCCH ports based on its own service needs, then the network device will not use the first set of transmission parameters and will inform the terminal device that it will not use the first set of transmission parameters. Alternatively, if the network device determines that the first set of transmission parameters indicated by the second information meets its own service needs, the network device will inform the terminal device that it will use the first set of transmission parameters.

[0255] The second information can be carried in RRC signaling or UCI signaling.

[0256] Optionally, method 600 further includes the following steps:

[0257] S640, the network device sends third-party information to the terminal device.

[0258] Correspondingly, the terminal device receives third-party information from the network device.

[0259] The third information is used to instruct the network device not to use the first set of transmission parameters, and / or the third information is used to instruct a different set of transmission parameters from the first set of transmission parameters; or the third information is used to instruct the network device to use the first set of transmission parameters.

[0260] For example, when a network device determines that it will not use the first set of transmission parameters, the network device may acquire a new set of transmission parameters. This new set of transmission parameters, which is different from the first set of transmission parameters, may be determined by the network device based on its own service requirements, the current channel environment, or the current channel conditions, or it may be pre-configured or pre-defined.

[0261] The third information can be carried in RRC signaling or DCI signaling.

[0262] For example, when a network device determines that it will not use the first set of transmission parameters, it may acquire a new set of transmission parameters and indicate this new set of transmission parameters, which differs from the first set, to the terminal device, for example, by providing third information. The third information indicating a different set of transmission parameters can be understood as carrying this new set of parameters. After receiving the third information, the terminal device can acquire this new set of transmission parameters and further transmit the PDCCH based on it.

[0263] For example, when a network device determines that it will use the first set of transmission parameters, the network device informs the terminal device to use the first set of transmission parameters through third information, and then the terminal device transmits the PDCCH according to the first set of transmission parameters.

[0264] S650, network devices send PDCCH to terminal devices.

[0265] Correspondingly, the terminal device receives the PDCCH from the network device.

[0266] In this process, the network device sends the PDCCH according to the first set of transmission parameters, and the terminal device receives the PDCCH according to the first set of transmission parameters.

[0267] Optionally, if the third information is used to indicate that the network device does not use the first set of transmission parameters, the method 600 further includes: the network device sending the PDCCH according to a set of transmission parameters different from the first set of transmission parameters. Correspondingly, the terminal device receives the PDCCH according to a set of transmission parameters different from the first set of transmission parameters.

[0268] For a description of the set of transmission parameters that differs from the first set of transmission parameters and the third information, please refer to step S640 above, and it will not be repeated here. Optionally, method 600 also includes step S651.

[0269] S651, The network device sends the sixth information to the terminal device.

[0270] Correspondingly, the terminal device receives the sixth piece of information from the network device.

[0271] For a description of the sixth information, please refer to the description in step S430b above, which will not be repeated here.

[0272] Optionally, before the network device sends the first information to the terminal device, method 600 further includes: the terminal device sending a seventh piece of information to the network device. Correspondingly, the network device receives the seventh piece of information from the terminal device.

[0273] The seventh piece of information is used to indicate whether the terminal device can transmit the PDCCH using the first transmission mode.

[0274] It should be noted that the terminal device sending the seventh information to the network device before the network device sends the first information can also be understood as the terminal device sending the seventh information to the network device before steps S410 and / or S420 in the above method 400. This application does not limit this, as long as the terminal device sending the seventh information to the network device occurs before step S651. For a detailed description of the seventh information, please refer to the description of the seventh information in step S430b above, which will not be repeated here.

[0275] In this embodiment, the terminal device obtains a set of PDCCH transmission parameters suitable for the current channel or environment based on the prior correspondence between multiple regions and multiple sets of transmission parameters, as well as the region to which the terminal device currently belongs. This improves the flexibility of determining the PDCCH transmission parameters, allowing higher-order transmission parameters to be used for PDCCH transmission when channel conditions are good, thereby increasing the capacity of the control channel and improving communication efficiency.

[0276] Figure 7 This is a schematic diagram of a communication method 700 provided in an embodiment of this application. For ease of description, a network device and a terminal device are used as examples to illustrate the execution subjects of this interaction, but this application does not limit the execution subjects of the interaction. For example, the method executed by the network device can also be implemented by a module (e.g., a circuit, chip, or chip system) in the network device, or a logical node, logical module, or software that can implement all or part of the network functions; the method executed by the terminal device can also be implemented by a communication module in the terminal device or a circuit or chip (e.g., a modem chip (also known as a baseband chip), or a SoC chip containing a modem core, or a SIP chip) in the terminal device responsible for communication functions. Furthermore, the steps described below as being executed by a single execution subject can also be divided into being executed by multiple execution subjects, which can be logically and / or physically separated. Figure 7 The method 700 shown may include the following steps.

[0277] It should be noted that, Figure 7 Method 700 is applicable to uplink transmission scenarios.

[0278] S710, the network device sends the first information to the terminal device.

[0279] Correspondingly, the terminal device receives the first information from the network device.

[0280] The first piece of information is used to indicate the correspondence between multiple regions and multiple sets of transmission parameters.

[0281] For example, the first information can be carried in RRC signaling or DCI signaling.

[0282] For example, before step S710, method 700 further includes: the network device determining the correspondence between multiple areas and multiple sets of transmission parameters. For the network device determining the correspondence between multiple areas and multiple sets of transmission parameters, please refer to the description in step S410 above, and for the detailed description of step S710, please refer to step S610 above, but PDCCH needs to be replaced with PUCCH, which will not be repeated here.

[0283] S720: The terminal device determines the first set of transmission parameters based on the correspondence between multiple regions and multiple sets of transmission parameters and the first region.

[0284] For a detailed description of step S720, please refer to step S620 above, but you need to replace PDCCH with PUCCH, which will not be repeated here.

[0285] S730, the terminal device sends a second message to the network device.

[0286] Correspondingly, the network device receives the second information from the terminal device.

[0287] For a detailed description of step S730 and the second information, please refer to step S630 above, but PDCCH needs to be replaced with PUCCH, which will not be repeated here.

[0288] Optionally, method 700 further includes the following steps:

[0289] S740, network devices send third-party information to terminal devices.

[0290] Correspondingly, the terminal device receives third-party information from the network device.

[0291] For a detailed description of step S740 and the third information, please refer to step S630 above, but PDCCH needs to be replaced with PUCCH, which will not be repeated here.

[0292] S750, the terminal device sends PUCCH to the network device.

[0293] Correspondingly, network devices receive PUCCH messages from terminal devices.

[0294] The terminal device sends the PUCCH according to the first set of transmission parameters, and the network device receives the PUCCH according to the first set of transmission parameters.

[0295] Optionally, if the third information is used to instruct the network device not to use the first set of transmission parameters, the method 600 further includes: the terminal device sending the PUCCH according to a set of transmission parameters different from the first set of transmission parameters. Correspondingly, the network device receives the PUCCH according to a set of transmission parameters different from the first set of transmission parameters.

[0296] For details regarding the set of transmission parameters that differ from the first set of transmission parameters and the incomplete description of the third information, please refer to step S640 above, which will not be repeated here.

[0297] Optionally, method 700 may further include step S751.

[0298] S751, The network device sends the sixth information to the terminal device.

[0299] Correspondingly, the terminal device receives the sixth piece of information from the network device.

[0300] For a description of the sixth information, please refer to the description in step S430b above, which will not be repeated here.

[0301] Optionally, before the network device sends the first information to the terminal device, method 700 further includes: the terminal device sending a seventh piece of information to the network device. Correspondingly, the network device receives the seventh piece of information from the terminal device.

[0302] The seventh piece of information is used to indicate whether the terminal device can transmit the PUCCH using the first transmission mode.

[0303] It should be noted that the terminal device sending the seventh information to the network device before the network device sends the first information can also be understood as the terminal device sending the seventh information to the network device before steps S410 and / or S420 in the above method 400. This application does not limit this, as long as the terminal device sending the seventh information to the network device occurs before step S751.

[0304] For a detailed description of the seventh information, please refer to the description of the seventh information in step S430b above, which will not be repeated here.

[0305] In this embodiment, the terminal device obtains a set of PUCCH transmission parameters suitable for the current channel or environment based on the prior correspondence between multiple regions and multiple sets of transmission parameters, as well as the region to which the terminal device currently belongs. This improves the flexibility of determining the PUCCH transmission parameters, allowing higher-order transmission parameters to be used for PUCCH transmission when channel conditions are good, thereby increasing the capacity of the control channel and improving communication efficiency.

[0306] Next, in conjunction with the appendix Figure 8 and attached Figure 9 The following describes in detail the implementation process of the network device in Mode 2 of the above communication method 400 determining the first set of transmission parameters by itself, and the implementation process of the terminal device in Mode 2 of the above communication method 400 obtaining the first set of transmission parameters from the network device.

[0307] Figure 8 This is a schematic diagram of a communication method 800 provided in an embodiment of this application. For ease of description, a network device and a terminal device are used as examples to illustrate the execution subjects of this interaction, but this application does not limit the execution subjects of the interaction. For example, the method executed by the network device can also be implemented by a module (e.g., a circuit, chip, or chip system) in the network device, or a logical node, logical module, or software that can implement all or part of the network functions; the method executed by the terminal device can also be implemented by a communication module in the terminal device or a circuit or chip (such as a modem chip (also known as a baseband chip), or a SoC chip containing a modem core, or a SIP chip) in the terminal device that is responsible for communication functions. In addition, the steps described below as being executed by a single execution subject can also be divided into being executed by multiple execution subjects, which can be logically and / or physically separated. Figure 8 The method 800 shown may include the following steps.

[0308] It should be noted that, Figure 8 Method 800 is applicable to downlink transmission scenarios.

[0309] S810, the network device determines the first area where the terminal device is located.

[0310] In one implementation, the network device determines the first area where the terminal device is located by first determining the location of the terminal device, the index of the first area, or the channel characteristic information of the terminal device, and then determining the first area based on the location of the terminal device, the index corresponding to the first area, or the channel characteristic information of the terminal device.

[0311] For example, a network device determines the first area where a terminal device is located, including: determining the first area where the terminal device is located based on the location of the terminal device. The location of the terminal device can be measured by the network device. For example, the network device measures the location of the terminal device and then determines the first area where the terminal device is located based on that location. Existing technologies regarding how the network device measures the location of the terminal device are relevant and will not be elaborated upon here.

[0312] For example, a network device determines the first region where a terminal device is located by: determining the first region where the terminal device is located based on the index corresponding to the first region. The index of the first region can be pre-configured for each region after the network device has divided the region into its own areas, in which case there is a one-to-one correspondence between the indexes of multiple regions and the multiple regions themselves. Therefore, the network device can determine the first region where the terminal device is located based on the index corresponding to the determined first region.

[0313] For example, the network device determines the first area where the terminal device is located by: determining the first area where the terminal device is located based on the channel characteristic information of the terminal device. The channel characteristic information of the terminal device includes at least one of the following: MPC information, reference channel matrix, and channel quality information.

[0314] It should be noted that the channel characteristic information of the terminal device can be obtained by the network device. For example, the network device measures the channel characteristic information of the terminal device and then determines the first area where the terminal device is located based on this channel characteristic information. The implementation methods for the network device to measure the channel characteristic information of the terminal device include: the network device using a reference signal to measure the channel characteristic information of the terminal device, or the network device measuring the channel characteristic information of the terminal device through a sensing signal, or using other measurement methods; this application does not limit these methods.

[0315] Furthermore, based on the first region where it is located, the network device determines the first set of transmission parameters corresponding to the first region from the correspondence between multiple regions and multiple sets of transmission parameters.

[0316] In one implementation, the network device determines the location of the terminal device or the index corresponding to the first region, or the channel characteristic information of the terminal device, which may be sent to the network device after the terminal device has determined this information. Then, the network device determines the first region based on the location of the terminal device or the index corresponding to the first region, or the channel characteristic information of the terminal device obtained from the terminal device.

[0317] Specifically, optionally, before the network device determines the first area of ​​the terminal device, method 800 further includes the following steps:

[0318] S801, The terminal device sends the fourth information to the network device.

[0319] Correspondingly, the network device receives the fourth information from the terminal device.

[0320] The fourth piece of information is used to indicate the first area where the terminal device is located.

[0321] In other words, after the terminal device determines its own location, it sends the fourth information to the network device.

[0322] Optionally, the fourth information includes any one of the following: the index corresponding to the first region; the location of the terminal device; and the channel characteristic information of the terminal device, which includes at least one of the following: multipath component (MPC) information, reference channel matrix, and channel quality information.

[0323] For example, the fourth information can be carried in RRC signaling or UCI signaling.

[0324] For information on multipath component (MPC) information, reference channel matrix, and channel quality information, please refer to the description in step S410 above, which will not be repeated here.

[0325] S820: The network device determines the first set of transmission parameters based on the correspondence between multiple regions and multiple sets of transmission parameters, as well as the first region.

[0326] Specifically, network devices can determine the first set of transmission parameters corresponding to a first region based on the correspondence between multiple regions and multiple sets of transmission parameters. Taking Table 2 as an example, the correspondence between region 1 and the transmission parameters of group A is called the first correspondence, the correspondence between region 2 and the transmission parameters of group B is called the second correspondence, the correspondence between region 3 and the transmission parameters of group C is called the third correspondence, and the correspondence between region 4 and the transmission parameters of group D is called the fourth correspondence. When the index of the region corresponding to the first region is region 1, the network device can determine the A-th group of transmission parameters corresponding to region 1 based on region 1 and the first correspondence. That is, the group of transmission parameters corresponding to region 1 indicates that the number of ports of the PDCCH is 2, the modulation scheme of the PDCCH is 16QAM, and the CCE aggregation level of the PDCCH is 2. Similarly, when the index of the region corresponding to the first region is region 2, the terminal device can find the B-th group of transmission parameters corresponding to region 2 based on region 2 and the second correspondence. That is, the group of transmission parameters corresponding to region 2 indicates that the number of ports of the PDCCH is 1, the modulation scheme of the PDCCH is 16QAM, and the CCE aggregation level of the PDCCH is 2. Furthermore, the network device can send the determined first group of transmission parameters to the terminal device, enabling the terminal device to obtain the first group of transmission parameters from the network device and use it to transmit the PDCCH. Similarly, if the index of the first region where the terminal device is located is region 3, then the Cth group of transmission parameters can be determined based on the correspondence between region 3 and the third group; if the index of the first region where the terminal device is located is region 4, then the Dth group of transmission parameters can be determined based on the correspondence between region 4 and the fourth group. In other words, the terminal device determines its own first region, and then, based on the above correspondence between multiple regions and multiple groups of transmission parameters, it can determine the first group of transmission parameters corresponding to that first region.

[0327] For example, before step S820, method 800 may further include: the network device determining the correspondence between multiple regions and multiple sets of transmission parameters. The description of the network device determining the correspondence between multiple regions and multiple sets of transmission parameters can be referred to in step S410 above, and will not be repeated here.

[0328] S830, the network device sends the fifth information to the terminal device.

[0329] Correspondingly, the terminal device receives the fifth piece of information from the network device.

[0330] The fifth piece of information is used to indicate the first set of transmission parameters.

[0331] For example, the fifth information can be carried in RRC signaling or DCI signaling.

[0332] S840, network devices send PDCCH to terminal devices.

[0333] Correspondingly, the terminal device receives the PDCCH from the network device.

[0334] In this process, the network device sends the PDCCH according to the first set of transmission parameters, and the terminal device receives the PDCCH according to the first set of transmission parameters.

[0335] Optionally, method 800 further includes step S841, as follows:

[0336] S841, The network device sends the sixth information to the terminal device.

[0337] Correspondingly, the terminal device receives the sixth piece of information from the network device.

[0338] For a description of the sixth information, please refer to the description in step S430b above, which will not be repeated here.

[0339] Optionally, before the terminal device sends the fourth information to the network device, method 800 further includes: the terminal device sending a seventh information to the network device. Correspondingly, the network device receives the seventh information from the terminal device.

[0340] The seventh piece of information is used to indicate whether the terminal device can transmit the PDCCH using the first transmission mode.

[0341] It should be noted that the terminal device sending the seventh information to the network device before sending the fourth information can also be understood as the terminal device sending the seventh information to the network device before steps S410 and / or S420 in the above method 400. This application does not limit this, as long as the terminal device sending the seventh information to the network device occurs before step S841.

[0342] For a detailed description of the seventh information, please refer to the description of the seventh information in step S430b above, which will not be repeated here.

[0343] In this embodiment, the network device obtains a set of PDCCH transmission parameters suitable for the current channel or environment based on the prior correspondence between multiple regions and multiple sets of transmission parameters, as well as the region to which the terminal device currently belongs. This improves the flexibility of determining the PDCCH transmission parameters, allowing higher-order transmission parameters to be used for PDCCH transmission when channel conditions are good, thereby increasing the capacity of the control channel and improving communication efficiency.

[0344] Figure 9 This is a schematic diagram of a communication method 900 provided in an embodiment of this application. For ease of description, a network device and a terminal device are used as examples of the execution subjects in this interactive illustration, but this application does not limit the execution subjects in the interactive illustration. For example, the method executed by the network device can also be implemented by a module (e.g., a circuit, chip, or chip system) in the network device, or a logical node, logical module, or software that can implement all or part of the network functions; the method executed by the terminal device can also be implemented by a communication module in the terminal device or a circuit or chip (such as a modem chip (also known as a baseband chip), or a SoC chip containing a modem core, or a SIP chip) in the terminal device responsible for communication functions. In addition, the steps described below as being executed by a single execution subject can also be divided into being executed by multiple execution subjects, which can be logically and / or physically separated. Figure 9 The method 900 shown may include the following steps.

[0345] It should be noted that, Figure 9 Method 900 is applicable to uplink transmission scenarios.

[0346] S910, the network device determines the first area where the terminal device is located.

[0347] Optionally, before the network device determines the first area of ​​the terminal device, method 900 further includes the following steps:

[0348] S901, The terminal device sends the fourth information to the network device.

[0349] Correspondingly, the network device receives the fourth information from the terminal device.

[0350] The fourth piece of information is used to indicate the first area where the terminal device is located.

[0351] For details not covered in steps S910 and S901, please refer to the descriptions in steps S810 and S801 above, which will not be repeated here.

[0352] S920: The network device determines the first set of transmission parameters based on the correspondence between multiple regions and multiple sets of transmission parameters, as well as the first region.

[0353] For example, before step S920, method 900 may further include: the network device determining the correspondence between multiple areas and multiple sets of transmission parameters. For the network device determining the correspondence between multiple areas and multiple sets of transmission parameters, please refer to the description in step S410 above. For a detailed description of step S920, please refer to step S820 above, but PDCCH needs to be replaced with PUCCH, which will not be repeated here.

[0354] S930, the network device sends the fifth information to the terminal device.

[0355] Correspondingly, the terminal device receives the fifth piece of information from the network device.

[0356] The fifth piece of information is used to indicate the first set of transmission parameters.

[0357] For example, the fifth information can be carried in RRC signaling or DCI signaling.

[0358] S940, the terminal device sends a PUCCH to the network device.

[0359] Correspondingly, network devices receive PUCCH messages from terminal devices.

[0360] The terminal device sends the PUCCH according to the first set of transmission parameters, and the network device receives the PUCCH according to the first set of transmission parameters.

[0361] Optionally, method 900 further includes step S941.

[0362] S941, The network device sends the sixth information to the terminal device.

[0363] Correspondingly, the terminal device receives the sixth piece of information from the network device.

[0364] For a description of the sixth information, please refer to the description of the sixth information in step S430b above, which will not be repeated here.

[0365] Optionally, before the terminal device sends the fourth information to the network device, method 900 further includes: the terminal device sending a seventh information to the network device. Accordingly, the network device receives the seventh information from the terminal device.

[0366] The seventh piece of information is used to indicate whether the terminal device can transmit the PUCCH using the first transmission mode.

[0367] It should be noted that the terminal device sending the seventh information to the network device before sending the fourth information can also be understood as the terminal device sending the seventh information to the network device before steps S410 and / or S420 in the above method 400. This application does not limit this, as long as the terminal device sending the seventh information to the network device occurs before step S941.

[0368] For a detailed description of the seventh information, please refer to the description of the seventh information in step S430b above, which will not be repeated here.

[0369] In this embodiment, the network device obtains a set of PUCCH transmission parameters suitable for the current channel or environment based on the prior correspondence between multiple regions and multiple sets of transmission parameters, as well as the region to which the terminal device currently belongs. This improves the flexibility of determining the PUCCH transmission parameters, allowing higher-order transmission parameters to be used for PUCCH transmission when channel conditions are good, thereby increasing the capacity of the control channel and improving communication efficiency.

[0370] Figure 10 This is a schematic diagram of a communication method 1000 provided in an embodiment of this application. For ease of description, a network device and a terminal device are used as examples of the execution subjects in this interactive illustration, but this application does not limit the execution subjects in the interactive illustration. For example, the method executed by the network device can also be implemented by a module (e.g., a circuit, chip, or chip system) in the network device, or a logical node, logical module, or software that can implement all or part of the network functions; the method executed by the terminal device can also be implemented by a communication module in the terminal device or a circuit or chip (e.g., a modem chip (also known as a baseband chip), or a SoC chip containing a modem core, or a SIP chip) in the terminal device responsible for communication functions. Furthermore, the steps described below as being executed by a single execution subject can also be divided into being executed by multiple execution subjects, which can be logically and / or physically separated. Figure 10 The method 000 shown may include the following steps.

[0371] S1010, The network device determines the correspondence between multiple areas and multiple sets of transmission parameters.

[0372] The multiple regions include the first region where the terminal device is located, and the multiple sets of transmission parameters include the first set of transmission parameters, which are used to transmit the Physical Downlink Control Channel (PDCCH) or the Physical Uplink Control Channel (PUCCH). The first set of transmission parameters is determined based on the correspondence and the first region.

[0373] Optionally, the multiple regions are associated with multiple location information, including the location of the terminal device; or the multiple regions are associated with multiple channel feature information, including the channel feature information of the terminal device.

[0374] For a detailed description of the correspondence between multiple regions and multiple sets of transmission parameters, as well as the detailed implementation method of the network device in determining the correspondence, please refer to step S410 above, which will not be repeated here.

[0375] S1020. The network device determines the first set of transmission parameters based on the correspondence between multiple regions and multiple sets of transmission parameters, as well as the first region.

[0376] Optionally, the first set of transmission parameters includes at least one of the following: the number of ports of the PDCCH, the modulation scheme of the PDCCH, at least one transmission scheme of the PDCCH, the aggregation level of the Control Channel Unit (CCE) of the PDCCH, and the number of d ports of the demodulation reference signal (DMRS) in the PDCCH; or the first set of transmission parameters includes at least one of the following: the number of ports of the PUCCH, at least one modulation scheme of the PUCCH, at least one transmission scheme of the PUCCH, the aggregation level of the Control Channel Unit (CCE) of the PUCCH, and the number of ports of the demodulation reference signal (DMRS) in the PUCCH, wherein the number of ports of the PDCCH or the number of ports of the PUCCH is greater than or equal to 1, and the number of ports of the DMRS is greater than or equal to 1.

[0377] The detailed implementation of how the network device determines the first set of transmission parameters based on the correspondence between multiple regions and multiple sets of transmission parameters, as well as the first region, can be found in step S820 above, and will not be repeated here.

[0378] Optionally, before the network device determines the first set of transmission parameters based on the correspondence between multiple regions and multiple sets of transmission parameters and the first region, method 1000 may further include the following steps S1011 and S1012:

[0379] S1011, The terminal device sends the fourth information to the network device.

[0380] Correspondingly, the network device receives the fourth information from the terminal device.

[0381] The fourth information includes any one of the following: the index corresponding to the first region; the location of the terminal device; the channel characteristics of the terminal device, wherein the channel characteristics of the terminal device include at least one of the following: multipath component (MPC) information, reference channel matrix, and channel quality information.

[0382] Optionally, the first set of transmission parameters is determined based on the correspondence between multiple regions and multiple sets of transmission parameters, and the first region, including: determining the first set of transmission parameters based on the index corresponding to the first region and the correspondence; or determining the first region where the terminal device is located based on the location of the terminal device; determining the first set of transmission parameters based on the first region and the correspondence; or determining the first region where the terminal device is located based on the channel characteristics of the terminal device; determining the first set of transmission parameters based on the first region and the correspondence.

[0383] For details regarding the fourth piece of information, please refer to step S801 above, which will not be repeated here.

[0384] S1012. The network device determines the first area where the terminal device is located.

[0385] For a detailed description of how the network device determines the first area where the terminal device is located, please refer to step S810 above, which will not be repeated here.

[0386] Furthermore, method 1000 may also include step S1021.

[0387] S1021. The network device sends the fifth information to the terminal device.

[0388] Correspondingly, the terminal device receives the fifth piece of information from the network device.

[0389] The fifth piece of information is used to indicate the first set of transmission parameters.

[0390] For a detailed description of the fifth piece of information, please refer to step S830 above, which will not be repeated here.

[0391] Furthermore, Method 1000 is applicable to both uplink and downlink transmission scenarios. For both uplink and downlink transmission scenarios, the subsequent steps of Method 1000 are described in Situation 1 and Situation 2, respectively.

[0392] Scenario 1: Downlink transmission scenario, specifically including step S1030a.

[0393] S1030a, The network device sends the PDCCH to the terminal device.

[0394] Correspondingly, the terminal device receives the PDCCH from the network device.

[0395] For a detailed description of step S1030a, please refer to the descriptions of step S430a in method 400 and step S650 in method 600, which will not be repeated here.

[0396] Scenario 2: Uplink transmission scenario, specifically including step S1030b.

[0397] S1030b: The terminal device sends a PUCCH to the network device.

[0398] Correspondingly, network devices receive PUCCH messages from terminal devices.

[0399] For a detailed description of step S1030b, please refer to the descriptions of step S430b in method 400 and step S750 in method 700, which will not be repeated here.

[0400] Optionally, method 1000 also includes:

[0401] S1040, The network device sends the sixth information to the terminal device.

[0402] Correspondingly, the terminal device receives the sixth piece of information from the network device.

[0403] For a detailed description of step S1040, please refer to the description of the sixth information in step S430b above, which will not be repeated here.

[0404] Optionally, before the terminal device sends the fourth information to the network device, method 1000 further includes: the terminal device sending the seventh information to the network device.

[0405] Correspondingly, the network device receives the seventh information from the terminal device.

[0406] The seventh piece of information is used to indicate whether the terminal device can use the first transmission mode to transmit the PDCCH.

[0407] It should be noted that the terminal device sending the seventh information to the network device before sending the fourth information can also be understood as the terminal device sending the seventh information to the network device before steps S410 and / or S420 in the above method 400. This application does not limit this, as long as the terminal device sending the seventh information to the network device occurs before step S1040.

[0408] For a detailed description of the seventh information, please refer to the description of the seventh information in step S430b above, which will not be repeated here.

[0409] In this embodiment, the network device obtains the correspondence between multiple regions and multiple sets of transmission parameters. Then, based on the region where the terminal device is currently located and the correspondence, the network device obtains a set of PDCCH or PUCCH transmission parameters suitable for the current channel or environment. This improves the flexibility of determining the transmission parameters of PDCCH or PUCCH. Furthermore, when the channel conditions are good, higher-order transmission parameters can be used to transmit PDCCH or PUCCH, thereby increasing the capacity of the control channel and improving communication efficiency.

[0410] Figure 11 This is a schematic diagram of a communication method 1100 provided in an embodiment of this application. For ease of description, a network device and a terminal device are used as examples of the execution subjects in this interactive illustration, but this application does not limit the execution subjects in the interactive illustration. For example, the method executed by the network device can also be implemented by a module (e.g., a circuit, chip, or chip system) in the network device, or a logical node, logical module, or software that can implement all or part of the network functions; the method executed by the terminal device can also be implemented by a communication module in the terminal device or a circuit or chip (e.g., a modem chip (also known as a baseband chip), or a SoC chip containing a modem core, or a SIP chip) in the terminal device responsible for communication functions. In addition, the steps described below as being executed by a single execution subject can also be divided into being executed by multiple execution subjects, which can be logically and / or physically separated. Figure 11 The method 1100 shown may include the following steps.

[0411] S1110, The network device sends the first information to the terminal device.

[0412] Correspondingly, the terminal device receives the first information from the network device.

[0413] The first information is used to indicate the correspondence between multiple regions and multiple sets of transmission parameters. The multiple regions include the first region where the terminal device is located. The multiple sets of transmission parameters include the first set of transmission parameters, which are used to transmit the Physical Downlink Control Channel (PDCCH) or the Physical Uplink Control Channel (PUCCH). The first set of transmission parameters is determined according to the correspondence and the first region. The PDCCH is received according to the first set of transmission parameters. Or the PUCCH is sent according to the first set of transmission parameters.

[0414] For a detailed description of the correspondence between multiple regions and multiple sets of transmission parameters, as well as the detailed implementation of the first information, please refer to step S410 above, which will not be repeated here.

[0415] Optionally, before the network device sends the first information to the terminal device, method 1100 may further include step S1101.

[0416] S1101, The network device determines the correspondence between multiple areas and multiple sets of transmission parameters.

[0417] For details on how network devices determine the correspondence between multiple regions and multiple sets of transmission parameters, please refer to step S410 above, which will not be repeated here.

[0418] S1120. The terminal device determines the first set of transmission parameters based on the correspondence between multiple regions and multiple sets of transmission parameters, as well as the first region.

[0419] The detailed implementation of how the terminal device determines the first set of transmission parameters based on the correspondence between multiple regions and multiple sets of transmission parameters and the first region can be found in step S620 above, and will not be repeated here.

[0420] Optionally, before the terminal device determines the first set of transmission parameters based on the correspondence between multiple regions and multiple sets of transmission parameters and the first region, method 1100 further includes the following steps:

[0421] S1111, The terminal device determines the first area where the terminal device is located.

[0422] For a detailed description of how the terminal device determines the first area where the terminal device is located, please refer to step S620 above, which will not be repeated here.

[0423] Furthermore, the terminal device sends the first set of transmission parameters to the network device, specifically including the following step S1130.

[0424] S1130, The terminal device sends the second information to the network device.

[0425] Correspondingly, the network device receives the second information from the terminal device.

[0426] The second information is used to indicate the first set of transmission parameters.

[0427] For a detailed description of step S1130 and the second information, please refer to step S630 above, which will not be repeated here.

[0428] Furthermore, method 1100 is applicable to both uplink and downlink transmission scenarios. For both uplink and downlink transmission scenarios, the subsequent steps of method 1100 are described in scenario one and scenario two, respectively.

[0429] Scenario 1: Downlink transmission scenario, specifically including step S1130a.

[0430] S1140a, The network device sends a PDCCH to the terminal device.

[0431] Correspondingly, the terminal device receives the PDCCH from the network device.

[0432] For a detailed description of step S1140a, please refer to the descriptions of step S430a in method 400 and step S650 in method 600, which will not be repeated here.

[0433] Scenario 2: Uplink transmission scenario, specifically including step S1030b.

[0434] S1140b: The terminal device sends a PUCCH to the network device.

[0435] Correspondingly, network devices receive PUCCH messages from terminal devices.

[0436] For a detailed description of step S1140b, please refer to the descriptions of step S430b in method 400 and step S750 in method 700, which will not be repeated here.

[0437] Optionally, before the network device sends the PDCCH to the terminal device, or the terminal device sends the PUCCH to the network device, method 1100 may further include the following step S1131:

[0438] S1131, The network device sends third information to the terminal device.

[0439] Correspondingly, the terminal device receives third-party information from the network device.

[0440] The third information is used to instruct the network device not to use the first set of transmission parameters, and / or the third indication information is used to indicate a set of transmission parameters different from the first set of transmission parameters; or the third information is used to instruct the network device to use the first set of transmission parameters.

[0441] Optionally, if the third information is used to instruct the network device not to use the first set of transmission parameters, the method 1100 further includes: the network device sending the PDCCH according to the set of transmission parameters different from the first set of transmission parameters. Correspondingly, the terminal device receives the PDCCH according to the set of transmission parameters different from the first set of transmission parameters. Alternatively, the terminal device sends the PUCCH according to the set of transmission parameters different from the first set of transmission parameters. Correspondingly, the network device receives the PUCCH according to the set of transmission parameters different from the first set of transmission parameters.

[0442] For details regarding the incomplete description of the third information, please refer to step S630 above, which will not be repeated here.

[0443] Optionally, method 1100 also includes:

[0444] S1150, The network device sends the sixth information to the terminal device.

[0445] Correspondingly, the terminal device receives the sixth piece of information from the network device.

[0446] The sixth information is used to instruct the terminal device to switch from a first transmission mode to a second transmission mode. The first transmission mode is a mode of sending the PDCCH according to the first set of transmission parameters or a mode of receiving the PUCCH according to the first set of transmission parameters. The second transmission mode is a mode of sending the PDCCH according to a predefined or preconfigured set of transmission parameters or a mode of receiving the PUCCH according to a predefined or preconfigured set of transmission parameters.

[0447] For a detailed description of step S1140, please refer to step S430b above, which will not be repeated here.

[0448] Optionally, before the network device sends the first information to the terminal device, method 1100 further includes:

[0449] The terminal device sends the seventh message to the network device.

[0450] Correspondingly, the network device receives the seventh information from the terminal device.

[0451] The seventh piece of information is used to indicate whether the terminal device is able to use the first transmission mode to transmit the PDCCH or the PUCCH.

[0452] It should be noted that the terminal device sending the seventh information to the network device before the network device sends the first information can also be understood as the terminal device sending the seventh information to the network device before steps S410 and / or S420 in the above method 400. This application does not limit this, as long as the terminal device sending the seventh information to the network device occurs before step S1150.

[0453] For a detailed description of the seventh information, please refer to step S430b above, which will not be repeated here.

[0454] In this embodiment, the network device obtains the correspondence between multiple regions and multiple sets of transmission parameters. Then, the network device sends the correspondence between the multiple regions and multiple sets of transmission parameters to the terminal device, so that the terminal device can obtain a set of PDCCH or PUCCH transmission parameters suitable for the current channel or environment based on the region where the terminal device is currently located and the correspondence between the multiple regions and multiple sets of transmission parameters. This improves the flexibility of determining the transmission parameters of PDCCH or PUCCH, and when the channel conditions are good, higher-order transmission parameters can be used to transmit PDCCH or PUCCH, thereby improving the capacity of the control channel.

[0455] Figure 12 This is a schematic diagram of a communication device 1200 provided in an embodiment of this application. Figure 12 As shown, the communication device 1200 may include modules or units for implementing the methods described in the embodiments above. In one possible design, the communication device 1200 includes a transceiver unit 1210 and a processing unit 1220. The transceiver unit 1210 can be used to implement corresponding communication functions. The transceiver unit 1210 may also be referred to as a communication interface or a communication unit. The processing unit 1220 can be used to perform processing, such as determining a first set of transmission parameters.

[0456] For example, the transceiver unit 1210 may include a receiving unit and a transmitting unit. The communication device 1200 may be a chip or chip system in the network device or terminal device described in the above embodiments, and the input / or output interface of the chip can be considered to correspond to the input and output of the transceiver unit 1210.

[0457] Optionally, the device 1200 may further include a storage unit, which can be used to store instructions and / or data, and the processing unit 1220 can read the instructions and / or data in the storage unit to enable the device to implement the aforementioned method embodiments.

[0458] For example, the device 1200 can correspond to Figure 4 The network device or terminal device in method 400 shown, or Figure 6 The network device or terminal device in method 600 shown, or Figure 7 The network device or terminal device in method 700 shown, or Figure 8 The network device or terminal device in method 800 shown, or Figure 9 The network device or terminal device in method 900 shown, or Figure 10 The network device or terminal device in method 1000 shown, or Figure 11The network device or terminal device in method 1100 can be used to implement the steps or processes executed by the network device in the corresponding method embodiments above. The transceiver unit 1210 can be used to perform operations related to transmission and reception in the method embodiments above, such as... Figure 4 Steps S430a and S430b in the example; for example Figure 6 One or more of steps S610, S630, S640, S650, and S651; or, for example... Figure 7 One or more of steps S710, S730, S740, S750, and S751; for example... Figure 8 One or more of steps S801, S830, S840, and S841; for example... Figure 9 One or more of steps S901, S930, S940, and S941; for example... Figure 10 One or more of steps S1011, S1021, S1030a, S1030b, and S1040; for example... Figure 11 The processing unit 1220 may perform one or more of the steps S1110, S1130, S1131, S1140a, S1140b, and S1150 in the above method embodiments. The processing unit 1220 may be used to perform processing-related operations in the above method embodiments, or operations other than sending and receiving, such as... Figure 4 One or more of steps S410 and S420 in the process; for example Figure 6 Step S620 in the text; for example... Figure 7 Step S720 in the text; for example Figure 8 One or more of steps S810 and S820 in the process; for example Figure 9 One or more of steps S910 and S920 in the process; for example Figure 10 One or more of steps S1010, S1012, and S1020; for example... Figure 11 One or more of steps S1101, S1111, and S1120.

[0459] In a first possible design, the device 1200 can be a network device-side communication device as described in the preceding embodiments. For example, it could be a network device or a communication module (e.g., a circuit, chip, or chip system) within a network device, or a logic node or logic module capable of implementing all or part of the network device's functions. The device 1200 can implement the steps or processes executed by the network device corresponding to those described in the above method embodiments. Specifically, the transceiver unit 1210 can be used to perform transceiver-related operations (such as sending and / or receiving data or messages) of the network device as described in the above method embodiments, and the processing unit 1220 can be used to perform terminal processing-related operations as described in the above method embodiments, or operations other than transceiver operations (such as operations other than sending and / or receiving data or messages).

[0460] One possible implementation is that the processing unit 1220 is used to obtain a first set of transmission parameters, which are determined by a first region where the terminal device is located and the correspondence between multiple regions and multiple sets of transmission parameters. The multiple regions include the first region where the terminal device is located, and the multiple sets of transmission parameters include the first set of transmission parameters, which correspond to the first region. The transceiver unit 1210 is used to send a physical downlink control channel (PDCCH) according to the first set of transmission parameters; or, to receive a physical uplink control channel (PUCCH) according to the first set of transmission parameters.

[0461] In another possible implementation, the processing unit 1220 determines the correspondence between multiple regions and multiple sets of transmission parameters. The multiple regions include a first region where the terminal device is located, and the multiple sets of transmission parameters include a first set of transmission parameters used to transmit the Physical Downlink Control Channel (PDCCH) or the Physical Uplink Control Channel (PUCCH). The processing unit 1220 is further configured to determine the first set of transmission parameters based on the correspondence and the first region. The transceiver unit 1210 is configured to transmit the PDCCH based on the first set of transmission parameters, or receive the PUCCH based on the first set of transmission parameters.

[0462] In another possible implementation, the transceiver unit 1210 is configured to send first information indicating a correspondence between multiple regions and multiple sets of transmission parameters. The multiple regions include a first region where the terminal device is located, and the multiple sets of transmission parameters include a first set of transmission parameters used to transmit a physical downlink control channel (PDCCH) or a physical uplink control channel (PUCCH). The transceiver unit 1210 is also configured to send the PDCCH according to the first set of transmission parameters or receive the PUCCH according to the first set of transmission parameters, wherein the first set of transmission parameters is determined based on the correspondence and the first region.

[0463] In a second possible design, the device 1200 can be a terminal device-side communication device as described in the preceding embodiments. For example, it could be a terminal device or a communication module within the terminal device (e.g., a processor, chip, or chip system, such as a circuit or chip responsible for communication functions in the terminal device (e.g., a modem chip, also known as a baseband chip, or a system-on-a-chip (SoC) chip containing a modem core, or a system-in-package (SIP) chip), or a logic node or logic module capable of implementing all or part of the terminal device's functions. The device 1200 can implement the steps or processes executed by the terminal device corresponding to those described in the above method embodiments. Specifically, the transceiver unit 1210 can be used to execute transceiver-related operations of the terminal device in the above method embodiments (e.g., sending and / or receiving data or messages), and the processing unit 1220 can be used to execute processing-related operations of the network device in the above method embodiments, or operations other than transceiver operations (e.g., sending and / or receiving data or messages).

[0464] In one possible implementation, processing unit 1220 is configured to acquire a first set of transmission parameters, which are determined by a first region where the terminal device is located and the correspondence between multiple regions and multiple sets of transmission parameters. The multiple regions include the first region where the terminal device is located, and the multiple sets of transmission parameters include the first set of transmission parameters, which correspond to the first region. Transceiver unit 1210 is configured to receive a physical downlink control channel (PDCCH) based on the first set of transmission parameters; or, transmit a physical uplink control channel (PUCCH) based on the first set of transmission parameters.

[0465] Another possible implementation is that the transceiver unit 1210 is used to receive the physical downlink control channel PDCCH according to the first set of transmission parameters; or to send the physical downlink control channel PUCCH according to the first set of transmission parameters; wherein the first set of transmission parameters is determined according to the correspondence between multiple regions and multiple sets of transmission parameters and the first region where the terminal device is located, the multiple regions include the first region, and the multiple sets of transmission parameters include the first set of transmission parameters.

[0466] In another possible implementation, the transceiver unit 1210 is configured to receive first information indicating a correspondence between multiple regions and multiple sets of transmission parameters. The multiple regions include a first region where the terminal device is located, and the multiple sets of transmission parameters include a first set of transmission parameters used to transmit a physical downlink control channel (PDCCH) or a physical uplink control channel (PUCCH). The processing unit 1220 is configured to determine the first set of transmission parameters based on the correspondence and the first region. The transceiver unit 1210 is further configured to receive the PDCCH based on the first set of transmission parameters or send the PUCCH based on the first set of transmission parameters.

[0467] It should be understood that the specific process of each unit performing the above-mentioned corresponding steps has been described in detail in the above method embodiments, and will not be repeated here for the sake of brevity.

[0468] It should also be understood that the device 1200 here is embodied in the form of a functional unit. The term "unit" here can refer to an application-specific integrated circuit (ASIC), electronic circuitry, a processor (e.g., a shared processor, a proprietary processor, or a group processor, etc.) and memory for executing one or more software or firmware programs, integrated logic circuitry, and / or other suitable components supporting the described functions. In an alternative example, those skilled in the art will understand that the device 1200 can be specifically the communication device in the above embodiments, and can be used to execute the various processes and / or steps corresponding to the communication device in the above method embodiments; to avoid repetition, these will not be described again here.

[0469] The apparatus 1200 of each of the above-described schemes has the function of implementing the corresponding steps performed by the communication device (such as a terminal device or a network device) in the above-described methods. The function can be implemented in hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions; for example, the transceiver unit can be replaced by a transceiver (e.g., the sending unit in the transceiver unit can be replaced by a transmitter, and the receiving unit in the transceiver unit can be replaced by a receiver), and other units, such as processing units, can be replaced by processors, each performing the transceiver operations and related processing operations in the respective method embodiments.

[0470] In addition, the transceiver unit 1210 may also be a transceiver circuit (for example, it may include a receiving circuit and a transmitting circuit), and the processing unit may be a processing circuit.

[0471] It should be pointed out that, Figure 12The communication device can be the communication equipment described in the foregoing embodiments (such as a terminal device or a network device), or it can be a chip or a chip system, such as a system on a chip (SoC). The transceiver unit can be an input / output circuit or a communication interface; the processing unit is a processor, microprocessor, or integrated circuit integrated on the chip. No limitations are imposed here.

[0472] Figure 13 This is a schematic diagram of another communication device 1300 provided in an embodiment of this application. The device 1300 includes a processor 1310, which is coupled to a memory 1320. The memory 1320 is used to store computer programs or instructions and / or data. The processor 1310 is used to execute the computer programs or instructions stored in the memory 1320, or to read the data stored in the memory 1320, in order to execute the methods in the above method embodiments.

[0473] Optionally, there may be one or more processors 1310.

[0474] Optionally, the memory 1320 may be one or more.

[0475] Alternatively, the memory 1320 can be integrated with the processor 1310, or it can be set separately.

[0476] Optionally, such as Figure 13 As shown, the device 1300 also includes a transceiver 1330, which is used for receiving and / or transmitting signals. For example, a processor 1310 is used to control the transceiver 1330 to receive and / or transmit signals. The transceiver 1330 includes a receiver and a transmitter.

[0477] As an example, processor 1310 may have Figure 12 The processing unit 1220 shown has the function of a storage unit, the memory 1320 can have the function of a storage unit, and the transceiver 1330 can have... Figure 12 The functions of the transceiver unit 1210 are shown.

[0478] As one option, the device 1300 is used to implement the operations performed by a communication device (such as a terminal device or a network device) in the various method embodiments described above.

[0479] For example, processor 1310 is used to execute computer programs or instructions stored in memory 1320 to implement the relevant operations of the communication device in the various method embodiments described above.

[0480] It should be understood that the processor mentioned in the embodiments of this application can be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor can be a microprocessor or any conventional processor.

[0481] It should also be understood that the memory mentioned in the embodiments of this application can be volatile memory and / or non-volatile memory. Non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM). For example, RAM can be used as an external cache. By way of example and not limitation, RAM includes the following forms: static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM).

[0482] It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA, or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component, the memory (storage module) can be integrated into the processor.

[0483] It should also be noted that the memory described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0484] Figure 14 This is a schematic diagram of a chip system 1400 provided in an embodiment of this application. The chip system 1400 (or may also be referred to as a processing system) includes logic circuitry 1410 and an input / output interface 1420.

[0485] The logic circuit 1410 can be a processing circuit in the chip system 1400. The logic circuit 1410 can be coupled to a memory unit, calling instructions from the memory unit, enabling the chip system 1400 to implement the methods and functions of the embodiments of this application. The input / output interface 1420 can be an input / output circuit in the chip system 1400, outputting processed information from the chip system 1400, or inputting data or signaling information to be processed into the chip system 1400 for processing.

[0486] As one approach, the chip system 1400 is used to implement operations performed by communication devices (such as terminal devices or network devices) in the various method embodiments described above.

[0487] For example, logic circuit 1410 is used to implement processing-related operations performed by a communication device (such as a terminal device or a network device) in the above method embodiments; input / output interface 1420 is used to implement sending and / or receiving-related operations performed by a communication device (such as a terminal device or a network device) in the above method embodiments.

[0488] This application also provides a computer-readable storage medium storing a computer program or instructions for implementing the methods executed by a communication device (such as a terminal device or a network device) in the above-described method embodiments. For example, when the computer program or instructions are run on the communication device, the communication device (such as a terminal device or a network device) performs the above-described methods (such as method 400).

[0489] This application also provides a computer program product comprising instructions that, when executed by a computer, implement the methods described above as performed by a communication device (such as a terminal device or a network device). For example, when the computer program or instructions are run on the communication device, the communication device (such as a terminal device or a network device) performs the methods described above (such as method 400).

[0490] This application also provides a communication system, which includes the terminal devices and / or network devices described in the above embodiments. For example, the system includes... Figure 4 The terminal device and network device in the embodiments.

[0491] The explanations and beneficial effects of the relevant contents in any of the devices provided above can be found in the corresponding method embodiments provided above, and will not be repeated here.

[0492] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of apparatus or units may be electrical, mechanical, or other forms.

[0493] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. For example, the computer can be a personal computer, a server, or a network device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium accessible to a computer or a data storage device such as a server or data center that integrates one or more available media. The available media can be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., DVDs), or semiconductor media (e.g., solid-state drives (SSDs)). The aforementioned available media include, but are not limited to, various media capable of storing program code, such as USB flash drives, portable hard drives, ROM, RAM, magnetic disks, or optical disks.

[0494] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A communication method, characterized in that, include: A first set of transmission parameters is obtained. The first set of transmission parameters is determined by a first region where the terminal device is located and the correspondence between multiple regions and multiple sets of transmission parameters. The multiple regions include the first region where the terminal device is located. The multiple sets of transmission parameters include the first set of transmission parameters. The first set of transmission parameters corresponds to the first region. The Physical Downlink Control Channel (PDCCH) is transmitted according to the first set of transmission parameters; or... The Physical Uplink Control Channel (PUCCH) is received according to the first set of transmission parameters.

2. The method according to claim 1, characterized in that, The acquisition of the first set of transmission parameters includes: Send a first message, which is used to indicate the correspondence; The terminal device receives second information, which is used to indicate the first set of transmission parameters, and the first set of transmission parameters is determined by the terminal device based on the first region and the correspondence.

3. The method according to claim 1 or 2, characterized in that, Before sending the PDCCH according to the first set of transmission parameters, or receiving the PUCCH according to the first set of transmission parameters, the method further includes: Send a third message, the third message being used to instruct the network device not to use the first set of transmission parameters, and / or the third message being used to indicate a set of transmission parameters different from the first set of transmission parameters; or Send a third message, which instructs the network device to use the first set of transmission parameters.

4. The method according to claim 3, characterized in that, When the third information is used to instruct the network device not to use the first set of transmission parameters, the method further includes: The PDCCH is sent according to a set of transmission parameters that are different from the first set of transmission parameters; or The PUCCH is received according to a set of transmission parameters that are different from the first set of transmission parameters.

5. The method according to claim 1, characterized in that, The acquisition of the first set of transmission parameters includes: Determine the first area where the terminal device is located; The first set of transmission parameters is determined based on the first region and the corresponding relationship.

6. The method according to claim 5, characterized in that, The method further includes: Receive fourth information, which is used to indicate the first area where the terminal device is located.

7. The method according to claim 5 or 6, characterized in that, The method further includes: Send a fifth message, which is used to indicate the first set of transmission parameters.

8. The method according to claim 6 or 7, characterized in that, The fourth piece of information includes any of the following: The index corresponding to the first region; The location of the terminal device; The channel characteristic information of the terminal device includes at least one of the following: Multipath component (MPC) information, reference channel matrix, and channel quality information.

9. The method according to claim 8, characterized in that, Determining the first area where the terminal device is located includes: The first region where the terminal device is located is determined based on the index of the first region; or Based on the location of the terminal device, the first area where the terminal device is located is determined; or Based on the channel characteristic information of the terminal device, the first region where the terminal device is located is determined.

10. The method according to any one of claims 1-9, characterized in that, The method further includes: A sixth message is sent, which is used to instruct the terminal device to switch transmission modes. The transmission modes include a first transmission mode and a second transmission mode. The first transmission mode is a mode of transmitting the PDCCH according to the first set of transmission parameters or a mode of transmitting the PUCCH according to the first set of transmission parameters. The second transmission mode is a mode of transmitting the PDCCH according to a predefined or preconfigured set of transmission parameters or a mode of transmitting the PUCCH according to a predefined or preconfigured set of transmission parameters.

11. The method according to claim 10, characterized in that, The method further includes: The seventh information is received, which is used to indicate whether the terminal device can transmit the PDCCH or the PUCCH using the first transmission mode.

12. A communication method, characterized in that, include: A first set of transmission parameters is obtained. The first set of transmission parameters is determined by a first region where the terminal device is located and the correspondence between multiple regions and multiple sets of transmission parameters. The multiple regions include the first region where the terminal device is located. The multiple sets of transmission parameters include the first set of transmission parameters. The first set of transmission parameters corresponds to the first region. Receive the Physical Downlink Control Channel (PDCCH) according to the first set of transmission parameters; or... The Physical Uplink Control Channel (PUCCH) is sent according to the first set of transmission parameters.

13. The method according to claim 12, characterized in that, The acquisition of the first set of transmission parameters includes: Receive first information, which is used to indicate the correspondence; Based on the first region and the corresponding relationship, the first set of transmission parameters is determined; The method further includes: Send a second message, which indicates the first set of transmission parameters.

14. The method according to claim 12 or 13, characterized in that, Before receiving the PDCCH according to the first set of transmission parameters, or sending the PUCCH according to the first set of transmission parameters, the method further includes: Receive third information, the third information being used to instruct the network device not to use the first set of transmission parameters, and / or the third information being used to indicate a set of transmission parameters different from the first set of transmission parameters; or Receive third information, which instructs the network device to use the first set of transmission parameters.

15. The method according to claim 14, characterized in that, When the third information is used to instruct the network device not to use the first set of transmission parameters, the method further includes: The PDCCH is received according to a set of transmission parameters that are different from the first set of transmission parameters; or The PUCCH is sent according to a set of transmission parameters that are different from the first set of transmission parameters.

16. The method according to claim 15, characterized in that, The acquisition of the first set of transmission parameters includes: Send a fourth message, the fourth message being used to indicate the first area where the terminal device is located; The network device receives a fifth piece of information, which is used to indicate the first set of transmission parameters, which are determined by the network device based on the first region and the correspondence.

17. The method according to claim 16, characterized in that, The fourth piece of information includes any of the following: The index corresponding to the first region; The location of the terminal device; The channel characteristic information of the terminal device includes at least one of the following: Multipath component (MPC) information, reference channel matrix, and channel quality.

18. The method according to any one of claims 12-17, characterized in that, The method further includes: The terminal device receives a sixth message, which instructs it to switch transmission modes. The transmission modes include a first transmission mode and a second transmission mode. The first transmission mode is either transmitting the PDCCH according to the first set of transmission parameters or transmitting the PUCCH according to the first set of transmission parameters. The second transmission mode is either transmitting the PDCCH according to a predefined or preconfigured set of transmission parameters or transmitting the PUCCH according to a predefined or preconfigured set of transmission parameters.

19. The method according to claim 18, characterized in that, The method further includes: Send a seventh message, which is used to indicate whether the terminal device can transmit the PDCCH or the PUCCH using the first transmission mode.

20. The method according to any one of claims 1-19, characterized in that, The first set of transmission parameters includes at least one of the following: The number of ports of the PDCCH, the modulation scheme of the PDCCH, at least one transmission scheme of the PDCCH, the aggregation level of the Control Channel Unit (CCE) of the PDCCH, and the number of ports of the Demodulation Reference Signal (DMRS) in the PDCCH; or The first set of transmission parameters includes at least one of the following: The number of ports of the PUCCH, the modulation scheme of the PUCCH, at least one transmission scheme of the PUCCH, the aggregation level of the Control Channel Unit (CCE) of the PUCCH, and the number of ports of the Demodulation Reference Signal (DMRS) in the PUCCH; Wherein, the number of ports of the PDCCH or the number of ports of the PUCCH is greater than or equal to 1, and the number of ports of the DMRS is greater than or equal to 1.

21. The method according to any one of claims 1-20, characterized in that, The multiple regions are associated with multiple location information, including the location of the terminal device; or The multiple regions are associated with multiple channel feature information, and the channel feature information includes the channel feature information of the terminal device.

22. A communication device, characterized in that, It includes modules or units for performing the method according to any one of claims 1 to 11; or, it includes modules or units for performing the method according to any one of claims 12 to 21.

23. A communication device, characterized in that, It includes at least one processor, the at least one processor being configured to execute a computer program or instructions in memory to cause the method of any one of claims 1 to 11 to be performed, or to cause the method of any one of claims 12 to 21 to be performed.

24. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program or instructions that, when executed on a communication device, cause the communication device to perform the method as described in any one of claims 1 to 11, or cause the communication device to perform the method as described in any one of claims 12 to 21.

25. A computer program product, characterized in that, The computer program product includes a computer program or instructions that, when executed on a communication device, cause the communication device to perform the method as described in any one of claims 1 to 11, or cause the communication device to perform the method as described in any one of claims 12 to 21.

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