Communication method and related apparatus

Abstract

A communication method and a related apparatus. In the method, a first communication apparatus can perform, on the basis of K configuration units comprised in first measurement configuration information, measurement on one or more measurement bandwidths, and, by means of first information, indicate K pieces of channel state information respectively corresponding to the K configuration units. The transmission power of signals transmitted on different bandwidths by a sender of channel measurement signals on the basis of same or similar signal transmit power varies, such that during the process of performing channel measurement on the basis of measurement configuration information, the first communication apparatus can receive channel measurement signals with corresponding receive power on specific measurement bandwidths, thus improving the signal transmission performance. In addition, the first communication apparatus can receive a channel measurement signal on a specific transmission bandwidth and obtain channel state information on a specific measurement bandwidth, thus achieving flexible acquisition of channel state information on one or more measurement bandwidths, and improving the accuracy of channel state information.

Description

Communication method and related apparatus

[0001] This application claims priority to the Chinese Patent Application No. 202410650157.2, filed on May 23, 2024, and entitled "A communication method and related apparatus", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of communication, and in particular, to a communication method and related apparatus. BACKGROUND

[0003] Wireless communication can be transmission communication between two or more communication devices without propagation through a conductor or cable. Generally, the two or more communication devices include a network device and a terminal device, or the two or more communication devices include different terminal devices.

[0004] Currently, different communication devices can use multi-input multi-output (MIMO) technology for communication. In the communication process, the signal sender can send a channel measurement signal (e.g., a reference signal), and the signal receiver can receive the channel measurement signal and measure the channel information based on the channel measurement signal. Subsequently, high-rate data transmission can be implemented based on the channel information.

[0005] However, in the above channel measurement process, how to improve the transmission performance of the channel measurement signal is a technical problem to be solved. SUMMARY

[0006] The present application provides a communication method and related apparatus for improving the transmission performance of the channel measurement signal and improving the accuracy of the channel state information obtained by the communication device based on the channel measurement signal.

[0007] The first aspect of the present application provides a communication method, which is performed by a first communication device. The first communication device can be a communication apparatus (e.g., a terminal device), or the first communication device can be a part of the communication apparatus (e.g., a circuit or a chip responsible for communication functions (e.g., a Modem chip, also known as a baseband chip, or a System on Chip (SoC) chip or a System in Package (SIP) chip containing a modem core)), or the first communication device can also be a logic module or software capable of implementing all or part of the functions of the communication apparatus. In the method, the first communication device receives first measurement configuration information, the first measurement configuration information including K configuration units, each configuration unit being used to configure the terminal device to perform channel measurement based on a measurement bandwidth, K being a positive integer; the first communication device performs channel measurement according to the K configuration units, and determines K channel state information; and the first communication device sends first information, the first information being used to indicate the K channel state information.

[0008] Based on the above scheme, the first communication device can perform measurement on one or more measurement bandwidths based on the K configuration units included in the first measurement configuration information, and indicate the K channel state information corresponding to the K configuration units respectively through the first information. Since the transmitter of the channel measurement signal is based on the same or similar signal transmission power, the transmission power (e.g., frequency domain power density) of the channel measurement signal transmitted on different bandwidths is different, so that the first communication device can receive the channel measurement signal with corresponding received power on a specific measurement bandwidth during the channel measurement based on the measurement configuration information, thereby improving the transmission performance of the channel measurement signal.

[0009] For example, when the transmitter of the channel measurement signal is far away from the first communication device, a smaller bandwidth can be used to transmit the channel measurement signal, so that the first communication device can receive the channel measurement signal with stronger power on a smaller bandwidth, thereby improving the success rate of receiving / analyzing the channel measurement signal.

[0010] For another example, when the transmitter of the channel measurement signal is close to the first communication device, a larger bandwidth can be used to transmit the channel measurement signal, so that the first communication device can receive the channel measurement signal with weaker power on a larger bandwidth, thereby saving the power consumption of the transmitter and enabling the first communication device to obtain the channel state information on a larger bandwidth based on the channel measurement signal.

[0011] In addition, compared with the implementation manner that the communication device performs channel measurement based on the default full bandwidth to obtain the estimated channel state information on other bandwidths, in the above scheme, the first communication device can indicate K pieces of channel state information through the first information, and the K pieces of channel state information are respectively obtained based on K pieces of measurement bandwidths configured by the K configuration units. Thus, the first communication device can receive the channel measurement signal on the specific transmission bandwidth and obtain the channel state information on the specific measurement bandwidth, and the acquisition of the channel state information on one or more measurement bandwidths can be flexibly implemented, and the accuracy of the channel state information obtained by the communication device is improved.

[0012] Optionally, in the present application, the configuration unit can be replaced by other terms, for example, a measurement configuration unit, a configuration, a resource configuration, a resource configuration unit, or configuration information, etc.

[0013] Optionally, in the present application, the measurement configuration information can be replaced by other terms, for example, configuration information, a resource configuration set, or a configuration set, etc.

[0014] It should be understood that the first measurement configuration information includes K configuration units, and the measurement bandwidths corresponding to different configuration units can be different. In other words, the K configuration units correspond to K measurement bandwidths respectively, and different measurement units are different in the K measurement units. For example, in the K configuration units, the kth configuration unit is used to configure the terminal device to perform channel measurement based on the kth measurement bandwidth, and k takes a value from 1 to K.

[0015] Optionally, K is a positive integer, for example, K is greater than or equal to 2.

[0016] Optionally, in the K measurement units, different measurement units are different; it can be understood that for any two measurement units of the K measurement units, at least one of the following is satisfied: the starting frequency domain positions of the two measurement units are different, the ending frequency domain positions of the two measurement units are different, or the measurement bandwidth sizes of the two measurement units are different.

[0017] It should be understood that, since the sender of the channel measurement signal transmits the channel measurement signal on different sizes of bandwidths based on the same or similar signal transmission power, the transmission power (for example, the frequency domain power density) of the channel measurement signal transmitted on different sizes of bandwidths is different, wherein the transmission bandwidth of the channel measurement signal and the transmission power of the channel measurement signal can have a correlation relationship. For example, the larger the transmission bandwidth of the channel measurement signal is, the smaller the transmission power of the channel measurement signal is; on the contrary, the smaller the transmission bandwidth of the channel measurement signal is, the larger the transmission power of the channel measurement signal is. Correspondingly, it can be understood that each configuration unit is used to configure the terminal device to perform channel measurement based on a transmission power (for example, a reception power or a transmission power, etc.).

[0018] In a possible implementation manner of the first aspect, the first communication apparatus determines K pieces of channel state information according to the K configuration units, including:

[0019] For any one of the K configuration units, the first communication apparatus determines a measurement bandwidth corresponding to the any one configuration unit according to the configuration information in the any one configuration unit, and determines the channel state information corresponding to the any one configuration unit according to the measurement bandwidth; or,

[0020] For any one of the K configuration units, the first communication apparatus determines a transmission power corresponding to the any one configuration unit according to the configuration information in the any one configuration unit, and determines the channel state information corresponding to the any one configuration unit according to the transmission power.

[0021] Based on the above scheme, in the process that the first communication apparatus performs channel measurement based on the K configuration units to obtain K pieces of channel state information, after the first communication apparatus determines the measurement bandwidth or the transmission power corresponding to any one configuration unit based on the configuration information in the any one configuration unit, the first communication apparatus can determine the channel state information corresponding to the any one configuration unit based on the measurement bandwidth or the transmission power, so that the first communication apparatus obtains the channel state information under specific measurement bandwidth or transmission power.

[0022] In a possible implementation manner of the first aspect, the method further includes: the first communication apparatus sends second information, the second information being used to indicate at least one of the following capability information: whether to support receiving based on a contracted bandwidth, whether to support transmitting based on a contracted bandwidth, a maximum multiple of the supported bandwidth contraction, or whether to support measuring channel state information of multiple contracted bandwidths.

[0023] Based on the above scheme, the first communication apparatus can further send the second information, so that the receiver of the second information determines that the first communication apparatus has the at least one capability information through the second information, and provides corresponding measurement configuration information (for example, the first measurement configuration information) for the first communication apparatus based on the at least one capability information.

[0024] The second aspect of the present application provides a communication method, which is performed by a second communication device. The second communication device can be a communication device (e.g., a terminal device or a network device), or the second communication device can be a part of the communication device (e.g., a circuit or a chip responsible for communication functions (e.g., a Modem chip, also known as a baseband chip, or a System on Chip (SoC) chip or a System in Package (SIP) chip containing a modem core), etc.), or the second communication device can also be a logic module or software capable of implementing all or part of the functions of the communication device. In the method, the second communication device sends first measurement configuration information, the first measurement configuration information including K configuration units, each configuration unit being used to configure a terminal device to perform channel measurement based on a measurement bandwidth, K being a positive integer; and the second communication device receives first information, the first information being used to indicate K channel state information; wherein the K channel state information are obtained based on the K configuration units, respectively.

[0025] Based on the above scheme, after the second communication device sends the first measurement configuration information to the first communication device, the first communication device can perform measurement on one or more measurement bandwidths based on the K configuration units included in the first measurement configuration information, and indicate the K channel state information corresponding to the K configuration units, respectively, through the first information. Since the sender of the channel measurement signal is based on the same or similar signal transmission power, the transmission power (e.g., frequency domain power density) of the channel measurement signal transmitted on different sizes of bandwidths is different, so that the first communication device can receive the channel measurement signal with a corresponding received power on a specific measurement bandwidth during the channel measurement based on the measurement configuration information, thereby improving the transmission performance of the channel measurement signal.

[0026] For example, when the sender of the channel measurement signal is far away from the first communication device, a smaller bandwidth can be used to transmit the channel measurement signal, so that the first communication device can receive the channel measurement signal with stronger power on a smaller bandwidth, thereby improving the success rate of receiving / analyzing the channel measurement signal.

[0027] For another example, when the sender of the channel measurement signal is close to the first communication device, a larger bandwidth can be used to transmit the channel measurement signal, so that the first communication device can receive the channel measurement signal with weaker power on a larger bandwidth, thereby saving the power consumption of the sender and enabling the first communication device to obtain the channel state information on a larger bandwidth based on the channel measurement signal.

[0028] In addition, compared with the implementation manner that the communication device performs channel measurement based on a default full bandwidth to obtain estimated channel state information on other bandwidths, in the above solution, the first communication device can indicate K pieces of channel state information through the first information, the K pieces of channel state information being respectively obtained based on channel measurement performed on K pieces of measurement bandwidths configured by the K pieces of configuration units. Thus, the first communication device can receive a channel measurement signal on a specific transmission bandwidth and obtain channel state information on a specific measurement bandwidth, and can flexibly implement obtaining of channel state information on one or more measurement bandwidths and improve accuracy of channel state information obtained by the communication device.

[0029] In a possible implementation manner of the second aspect, the K pieces of channel state information are respectively obtained based on channel measurement performed on the K pieces of configuration units, and the method comprises:

[0030] For any one of the K pieces of channel state information, configuration information in a configuration unit corresponding to the any one of the channel state information is used to determine a measurement bandwidth, and the measurement bandwidth is used to determine the any one of the channel state information; or,

[0031] For any one of the K pieces of channel state information, configuration information in a configuration unit corresponding to the any one of the channel state information is used to determine a transmission power, and the transmission power is used to determine the any one of the channel state information.

[0032] Based on the above solution, in the process that the first communication device obtains K pieces of channel state information based on channel measurement performed on the K pieces of configuration units, after the first communication device determines a measurement bandwidth or a transmission power corresponding to any one of the configuration units based on configuration information in the any one of the configuration units, the first communication device can determine channel state information corresponding to the any one of the configuration units based on the measurement bandwidth or the transmission power, so that the first communication device obtains the channel state information on a specific measurement bandwidth or transmission power.

[0033] In a possible implementation manner of the second aspect, the method further comprises: receiving, by the second communication device, second information, the second information being used to indicate at least one of the following capability information: whether to support receiving based on a contracted bandwidth, whether to support transmitting based on a contracted bandwidth, a maximum multiple of a contracted bandwidth supported, or whether to support measuring channel state information of multiple contracted bandwidths.

[0034] Based on the above solution, the second communication device can further receive the second information, so that the second communication device determines, through the second information, that the first communication device has the at least one of the capability information, and provides corresponding measurement configuration information (for example, the first measurement configuration information) for the first communication device based on the at least one of the capability information.

[0035] In a possible implementation of the first aspect or the second aspect, any configuration unit of the K configuration units comprises at least one of the following:

[0036] first indication information, indicating an identity or an index of the any configuration unit;

[0037] second indication information, indicating a starting frequency domain position corresponding to the any configuration unit;

[0038] third indication information, indicating a terminal frequency domain position corresponding to the any configuration unit;

[0039] fourth indication information, indicating a quantity of frequency domain resources (which can be resource blocks (RBs), resource block groups (RBGs), or subcarriers, etc.) corresponding to the any configuration unit;

[0040] fifth indication information, indicating a bandwidth scaling coefficient, the bandwidth scaling coefficient being used to indicate a ratio of a measurement bandwidth corresponding to the any configuration unit to a first bandwidth, the first bandwidth being a bandwidth of a cell corresponding to the first measurement configuration information, or the first bandwidth being a bandwidth corresponding to a currently activated bandwidth part (BWP) in the cell corresponding to the first measurement configuration information;

[0041] sixth indication information, indicating a power scaling coefficient, the power scaling coefficient being used to indicate a ratio of a first power to a second power, the first power being a transmission power assumed by the terminal device when performing measurement based on measurement in the measurement bandwidth corresponding to the any configuration unit, the second power being a transmission power assumed by the terminal device when performing measurement based on the first bandwidth, or the second power being a transmission power configured by the network device for the terminal device.

[0042] Optionally, the sixth indication information can be implemented in other manners. For example, the sixth indication information indicates a power scaling coefficient, the power scaling coefficient being used to indicate a ratio of a first power to a second power, the first power being a transmission power of the terminal device when performing measurement based on measurement in the measurement bandwidth corresponding to the any configuration unit, the second power being a transmission power of the terminal device when performing measurement based on the first bandwidth, or the second power being a transmission power configured by the network device for the terminal device.

[0043] Based on the above scheme, any configuration unit of the K configuration units can comprise the at least one of the above, so as to improve flexibility of implementation of the scheme.

[0044] As an example, the any configuration unit includes the second indication information and the third indication information. Alternatively, the second indication information and / or the third indication information is pre-configured. Alternatively, the second indication information and / or the third indication information is configured through other information / message / signaling.

[0045] As another example, the any configuration unit includes the second indication information and the fourth indication information. Alternatively, the second indication information and / or the fourth indication information is pre-configured. Alternatively, the second indication information and / or the fourth indication information is configured through other information / message / signaling.

[0046] As another example, the any configuration unit includes the third indication information and the fourth indication information. Alternatively, the third indication information and / or the fourth indication information is pre-configured. Alternatively, the third indication information and / or the fourth indication information is configured through other information / message / signaling.

[0047] Through any of the above examples, the any configuration unit can realize the configuration of a measurement bandwidth corresponding thereto.

[0048] Optionally, in any of the above examples, the any configuration unit can further include first indication information.

[0049] Optionally, in any of the above examples, the any configuration unit can further include fifth indication information.

[0050] Optionally, in any of the above examples, the any configuration unit can further include sixth indication information.

[0051] In a possible implementation of the first aspect or the second aspect, the value of i is 1 to K, and the i-th channel state information of the K channel state information includes at least one of the following:

[0052] The seventh indication information indicates whether the i-th channel state information includes at least one of a rank indicator (RI) and a precoding matrix indicator (PMI);

[0053] The eighth indication information indicates a first identifier of one of the K configuration units; wherein the RI included in the i-th channel state information is the same as the RI included in the channel state information of the configuration unit corresponding to the first identifier, and / or the PMI included in the i-th channel state information is the same as the PMI included in the channel state information of the configuration unit corresponding to the first identifier.

[0054] Based on the above scheme, any channel state information of the K channel state information indicated by the first information can comprise the seventh indication information and / or the eighth indication information, so as to realize the indication of the RI and / or the PMI.

[0055] Optionally, the ith channel state information comprises the seventh indication information; and in a case where the seventh indication information indicates that the ith channel state information does not comprise at least one of the RI and the PMI, the ith channel state information comprises the eighth indication information.

[0056] In a possible implementation of the first aspect or the second aspect, the first information comprises a first part and a second part.

[0057] The first part comprises at least one of the following: the seventh indication information, ninth indication information, or tenth indication information.

[0058] The second part comprises at least one of the following: the eighth indication information, eleventh indication information, or twelfth indication information.

[0059] The ninth indication information indicates resource indexes corresponding to the K channel state information, the tenth indication information indicates channel quality indicators (CQI) corresponding to the K channel state information respectively, the eleventh indication information indicates RIs corresponding to the K channel state information respectively, and the twelfth indication information indicates PMIs corresponding to the K channel state information respectively.

[0060] Based on the above scheme, any channel state information of the K channel state information indicated by the first information can comprise the RI, the PMI, and the CQI, and correspondingly, the first information can indicate the RI, the PMI, and the CQI contained in the any channel state information through the first part and the second part.

[0061] It should be understood that the seventh indication information contained in the first part and the eighth indication information contained in the second part have a correlation relationship.

[0062] As an example, for the ith channel state information of the K channel state information, if the seventh indication information contained in the first part indicates that the ith channel state information contains the RI, the second part does not contain the eighth indication information or the eighth indication information contained in the second part indicates that the first identifier is not associated with the ith channel state information, and the eleventh indication information contained in the second part is used to indicate the RI corresponding to the ith channel state information. In other words, the receiver of the first information obtains the RI corresponding to the ith channel state information through the eleventh indication information of the second part.

[0063] On the contrary, for the i-th channel state information of the K channel state information, if the seventh indication information contained in the first part indicates that the i-th channel state information does not contain the RI, the second part contains the eighth indication information or the first identifier indicated by the eighth indication information contained in the second part is associated with the i-th channel state information, and the second part does not contain the eleventh indication information or the eleventh indication information contained in the second part is used to indicate the RI corresponding to the other channel state information. In other words, the receiver of the first information obtains the RI corresponding to the i-th channel state information through the identifier of the configuration unit indicated by the eighth indication information of the second part.

[0064] As another example, for the i-th channel state information of the K channel state information, if the seventh indication information contained in the first part indicates that the i-th channel state information contains the PMI, the second part does not contain the eighth indication information or the first identifier indicated by the eighth indication information contained in the second part is not associated with the i-th channel state information, and the second part contains the twelfth indication information used to indicate the PMI corresponding to the i-th channel state information. In other words, the receiver of the first information obtains the PMI corresponding to the i-th channel state information through the twelfth indication information of the second part.

[0065] On the contrary, for the i-th channel state information of the K channel state information, if the seventh indication information contained in the first part indicates that the i-th channel state information does not contain the PMI, the second part contains the eighth indication information or the first identifier indicated by the eighth indication information contained in the second part is associated with the i-th channel state information, and the second part does not contain the twelfth indication information or the twelfth indication information contained in the second part is used to indicate the PMI corresponding to the other channel state information. In other words, the receiver of the first information obtains the PMI corresponding to the i-th channel state information through the identifier of the configuration unit indicated by the eighth indication information of the second part.

[0066] As another example, for the i-th channel state information of the K channel state information, if the seventh indication information contained in the first part indicates that the i-th channel state information contains the RI and the PMI, the second part does not contain the eighth indication information or the first identifier indicated by the eighth indication information contained in the second part is not associated with the i-th channel state information, the second part contains the eleventh indication information used to indicate the RI corresponding to the i-th channel state information, and the second part contains the twelfth indication information used to indicate the PMI corresponding to the i-th channel state information. In other words, the receiver of the first information obtains the RI corresponding to the i-th channel state information through the eleventh indication information of the second part, and the receiver of the first information obtains the PMI corresponding to the i-th channel state information through the twelfth indication information of the second part.

[0067] On the contrary, for the i-th channel state information of the K channel state information, if the first part contains the seventh indication information indicating that the i-th channel state information does not contain the RI and the PMI, the second part contains the eighth indication information or the eighth indication information contained in the second part indicates that the first identifier associated with the i-th channel state information, the second part does not contain the eleventh indication information or the eleventh indication information contained in the second part is used to indicate the RI corresponding to the other channel state information, and the second part does not contain the twelfth indication information or the twelfth indication information contained in the second part is used to indicate the PMI corresponding to the other channel state information. In other words, the receiver of the first information obtains the RI and the PMI corresponding to the i-th channel state information through the identifier of the configuration unit indicated by the eighth indication information of the second part.

[0068] In a possible implementation of the first aspect or the second aspect, the first information includes K seventh indication information, and the K seventh indication information respectively indicates whether the K channel state information includes at least one of the RI and the PMI; and the K seventh indication information is respectively carried in K bits of the first bit map.

[0069] Based on the above scheme, the first information can indicate the K channel state information, and the first information can realize the indication of the K seventh indication information through the K bits in the first bit map, so as to realize the indication of whether the K channel state information includes at least one of the RI and the PMI.

[0070] Optionally, the K seventh indication information is respectively carried in the K bits of the first bit map, and it can be understood that the i-th seventh indication information of the K seventh indication information is carried in the i-th bit of the K bits of the first bit map, or the value of the i-th bit of the K bits of the first bit map means the information indicated by the i-th seventh indication information of the K seventh indication information.

[0071] Optionally, each seventh indication information can be carried in one or more bits. In other words, the first bit map can include K segments of bits, the K seventh indication information is respectively carried in the K segments of bits in the first bit map, and the length of each segment of bits can be greater than or equal to 1. In this way, more bits can be used to realize flexible indication of "whether the K channel state information includes at least one of the RI and the PMI".

[0072] In a possible implementation of the first aspect or the second aspect, the value of i is 1 to K, and the i-th channel state information of the K channel state information includes at least one of the following:

[0073] The thirteenth indication information indicates whether the ith channel state information includes at least one of the RI, the PMI, and the channel quality identifier CQI.

[0074] The fourteenth indication information indicates a second identifier of one of the K configuration units; and the ith channel state information satisfies one or more of the following: the RI included in the ith channel state information is the same as the RI included in the channel state information of the configuration unit corresponding to the second identifier, the PMI included in the ith channel state information is the same as the PMI included in the channel state information of the configuration unit corresponding to the second identifier, and the CQI included in the ith channel state information is the same as the CQI included in the channel state information of the configuration unit corresponding to the second identifier.

[0075] Based on the above scheme, any channel state information in the K channel state information indicated by the first information can include the thirteenth indication information and / or the fourteenth indication information to indicate at least one of the RI, the PMI, and the CQI.

[0076] Optionally, the ith channel state information includes the thirteenth indication information; and in a case where the thirteenth indication information indicates that the ith channel state information does not include at least one of the RI, the PMI, and the CQI, the ith channel state information includes the fourteenth indication information.

[0077] In a possible implementation of the first aspect or the second aspect, the first information includes a third part and a fourth part.

[0078] The third part includes at least one of the following: the thirteenth indication information, and fifteenth indication information.

[0079] The fourth part includes at least one of the following: the fourteenth indication information, sixteenth indication information, seventeenth indication information, or eighteenth indication information.

[0080] The fifteenth indication information indicates resource indexes corresponding to the K channel state information, the sixteenth indication information indicates RIs corresponding to the K channel state information respectively, the seventeenth indication information indicates PMIs corresponding to the K channel state information respectively, and the eighteenth indication information indicates CQIs corresponding to the K channel state information respectively.

[0081] Based on the above scheme, any channel state information in the K channel state information indicated by the first information can include the RI, the PMI, and the CQI, and accordingly, the first information can indicate the RI, the PMI, and the CQI included in the any channel state information through the third part and the fourth part.

[0082] It should be understood that the thirteenth indication information contained in the third part and the fourteenth indication information contained in the fourth part have a correlation relationship.

[0083] As an example, for the i-th channel state information of the K channel state information, if the thirteenth indication information contained in the third part indicates that the i-th channel state information contains RI, the fourth part does not contain the fourteenth indication information or the second identifier indicated by the fourteenth indication information contained in the fourth part is not associated with the i-th channel state information, and the sixteenth indication information contained in the fourth part is used to indicate the RI corresponding to the i-th channel state information. In other words, the receiver of the first information obtains the RI corresponding to the i-th channel state information through the sixteenth indication information of the fourth part.

[0084] On the contrary, for the i-th channel state information of the K channel state information, if the thirteenth indication information contained in the third part indicates that the i-th channel state information does not contain RI, the fourth part contains the fourteenth indication information or the second identifier indicated by the fourteenth indication information contained in the fourth part is associated with the i-th channel state information, and the fourth part does not contain the sixteenth indication information or the sixteenth indication information contained in the fourth part is used to indicate the RI corresponding to other channel state information. In other words, the receiver of the first information obtains the RI corresponding to the i-th channel state information through the identifier of the configuration unit corresponding to the PMI indicated by the fourteenth indication information of the fourth part.

[0085] As another example, for the i-th channel state information of the K channel state information, if the thirteenth indication information contained in the third part indicates that the i-th channel state information contains PMI, the fourth part does not contain the fourteenth indication information or the second identifier indicated by the fourteenth indication information contained in the fourth part is not associated with the i-th channel state information, and the seventeenth indication information contained in the fourth part is used to indicate the PMI corresponding to the i-th channel state information. In other words, the receiver of the first information obtains the PMI corresponding to the i-th channel state information through the seventeenth indication information of the fourth part.

[0086] On the contrary, for the i-th channel state information of the K channel state information, if the thirteenth indication information contained in the third part indicates that the i-th channel state information does not contain PMI, the fourth part contains the fourteenth indication information or the second identifier indicated by the fourteenth indication information contained in the fourth part is associated with the i-th channel state information, and the fourth part does not contain the seventeenth indication information or the seventeenth indication information contained in the fourth part is used to indicate the PMI corresponding to other channel state information. In other words, the receiver of the first information obtains the PMI corresponding to the i-th channel state information through the PMI corresponding to the identifier of the configuration unit indicated by the fourteenth indication information of the fourth part.

[0087] As another example, for the i-th channel state information of the K channel state information, if the thirteenth indication information contained in the third part indicates that the i-th channel state information contains CQI, the fourth part does not contain the fourteenth indication information or the second identifier indicated by the fourteenth indication information contained in the fourth part is not associated with the i-th channel state information, and the eighteenth indication information contained in the fourth part is used to indicate the CQI corresponding to the i-th channel state information. In other words, the receiver of the first information obtains the CQI corresponding to the i-th channel state information through the eighteenth indication information of the fourth part.

[0088] On the contrary, for the i-th channel state information of the K channel state information, if the thirteenth indication information contained in the third part indicates that the i-th channel state information does not contain PMI, the fourth part contains the fourteenth indication information or the second identifier indicated by the fourteenth indication information contained in the fourth part is associated with the i-th channel state information, and the fourth part does not contain the eighteenth indication information or the eighteenth indication information contained in the fourth part is used to indicate the CQI corresponding to other channel state information. In other words, the receiver of the first information obtains the CQI corresponding to the i-th channel state information through the CQI corresponding to the identifier of the configuration unit indicated by the fourteenth indication information of the fourth part.

[0089] As another example, for the i-th channel state information of the K channel state information, if the thirteenth indication information contained in the third part indicates that the i-th channel state information contains RI and PMI, the fourth part does not contain the fourteenth indication information or the second identifier indicated by the fourteenth indication information contained in the fourth part is not associated with the i-th channel state information, the fourth part contains the sixteenth indication information used to indicate the RI corresponding to the i-th channel state information, and the fourth part contains the seventeenth indication information used to indicate the PMI corresponding to the i-th channel state information. In other words, the receiver of the first information obtains the RI corresponding to the i-th channel state information through the sixteenth indication information of the fourth part, and the receiver of the first information obtains the PMI corresponding to the i-th channel state information through the seventeenth indication information of the fourth part.

[0090] Conversely, for the i-th channel state information of the K channel state information, if the thirteenth indication information contained in the third part indicates that the i-th channel state information does not contain RI and PMI, the fourth part contains the fourteenth indication information or the second identifier indicated by the fourteenth indication information contained in the fourth part is not associated with the i-th channel state information, the sixteenth indication information contained in the fourth part is used to indicate the RI corresponding to the other channel state information, and the seventeenth indication information contained in the fourth part is used to indicate the PMI corresponding to the other channel state information. In other words, the receiver of the first information obtains the RI and PMI corresponding to the i-th channel state information through the identifier of the configuration unit indicated by the fourteenth indication information of the fourth part.

[0091] As another example, for the i-th channel state information of the K channel state information, if the thirteenth indication information contained in the third part indicates that the i-th channel state information contains RI and CQI, the fourth part does not contain the fourteenth indication information or the second identifier indicated by the fourteenth indication information contained in the fourth part is not associated with the i-th channel state information, the sixteenth indication information contained in the fourth part is used to indicate the RI corresponding to the i-th channel state information, and the eighteenth indication information contained in the fourth part is used to indicate the CQI corresponding to the i-th channel state information. In other words, the receiver of the first information obtains the RI corresponding to the i-th channel state information through the sixteenth indication information of the fourth part, and obtains the CQI corresponding to the i-th channel state information through the eighteenth indication information of the fourth part.

[0092] Conversely, for the i-th channel state information of the K channel state information, if the thirteenth indication information contained in the third part indicates that the i-th channel state information does not contain RI and CQI, the fourth part contains the fourteenth indication information or the second identifier indicated by the fourteenth indication information contained in the fourth part is associated with the i-th channel state information, the sixteenth indication information contained in the fourth part is used to indicate the RI corresponding to the other channel state information, and the eighteenth indication information contained in the fourth part is used to indicate the CQI corresponding to the other channel state information. In other words, the receiver of the first information obtains the RI and CQI corresponding to the i-th channel state information through the identifier of the configuration unit indicated by the fourteenth indication information of the fourth part.

[0093] As another example, for the i-th channel state information of the K channel state information, if the thirteenth indication information contained in the third part indicates that the i-th channel state information contains PMI and CQI, the fourth part does not contain the fourteenth indication information or the second identifier indicated by the fourteenth indication information contained in the fourth part is not associated with the i-th channel state information, the seventeenth indication information contained in the fourth part is used to indicate the PMI corresponding to the i-th channel state information, and the eighteenth indication information contained in the fourth part is used to indicate the CQI corresponding to the i-th channel state information. In other words, the receiver of the first information obtains the PMI corresponding to the i-th channel state information through the seventeenth indication information of the fourth part, and obtains the CQI corresponding to the i-th channel state information through the eighteenth indication information of the fourth part.

[0094] On the contrary, for the i-th channel state information of the K channel state information, if the thirteenth indication information contained in the third part indicates that the i-th channel state information does not contain PMI and CQI, the fourth part contains the fourteenth indication information or the second identifier indicated by the fourteenth indication information contained in the fourth part is associated with the i-th channel state information, the fourth part does not contain the seventeenth indication information or the seventeenth indication information contained in the fourth part is used to indicate the PMI corresponding to other channel state information, and the fourth part does not contain the eighteenth indication information or the eighteenth indication information contained in the fourth part is used to indicate the CQI corresponding to other channel state information. In other words, the receiver of the first information obtains the PMI and CQI corresponding to the i-th channel state information through the identifier of the configuration unit indicated by the fourteenth indication information of the fourth part.

[0095] As another example, for the i-th channel state information of the K channel state information, if the thirteenth indication information contained in the third part indicates that the i-th channel state information contains RI, PMI and CQI, the fourth part does not contain the fourteenth indication information or the second identifier indicated by the fourteenth indication information contained in the fourth part is not associated with the i-th channel state information, the sixteenth indication information contained in the fourth part is used to indicate the RI corresponding to the i-th channel state information, the seventeenth indication information contained in the fourth part is used to indicate the PMI corresponding to the i-th channel state information, and the eighteenth indication information contained in the fourth part is used to indicate the CQI corresponding to the i-th channel state information. In other words, the receiver of the first information obtains the RI corresponding to the i-th channel state information through the sixteenth indication information of the fourth part, the receiver of the first information obtains the PMI corresponding to the i-th channel state information through the seventeenth indication information of the fourth part, and the receiver of the first information obtains the CQI corresponding to the i-th channel state information through the eighteenth indication information of the fourth part.

[0096] Conversely, for the i-th channel state information of the K channel state information, if the thirteenth indication information contained in the third part indicates that the i-th channel state information does not contain RI, PMI and CQI, then the fourteenth indication information contained in the fourth part or the second identifier indicated by the fourteenth indication information contained in the fourth part is associated with the i-th channel state information, the fourth part does not contain the sixteenth indication information or the sixteenth indication information contained in the fourth part is used to indicate the RI corresponding to the other channel state information, the fourth part does not contain the seventeenth indication information or the seventeenth indication information contained in the fourth part is used to indicate the PMI corresponding to the other channel state information, and the fourth part does not contain the eighteenth indication information or the eighteenth indication information contained in the fourth part is used to indicate the CQI corresponding to the other channel state information. In other words, the receiver of the first information obtains the RI, PMI and CQI corresponding to the i-th channel state information through the identifier of the configuration unit indicated by the fourteenth indication information of the fourth part.

[0097] In a possible implementation form of the first aspect or the second aspect, the first information comprises K thirteenth indication information, the K thirteenth indication information respectively indicates whether the K channel state information comprises at least one of RI, PMI and CQI; wherein the K thirteenth indication information is respectively carried in K bits of the second bit map.

[0098] Based on the above scheme, the first information can indicate the K channel state information, wherein the first information can realize the indication of the K thirteenth indication information through the K bits in the second bit map, so as to realize the indication of whether the K channel state information comprises at least one of RI, PMI and CQI.

[0099] Optionally, the K thirteenth indication information is respectively carried in K bits of the second bit map, which can be understood as that the i-th thirteenth indication information of the K thirteenth indication information is carried in the i-th bit of the K bits of the second bit map, or the value of the i-th bit of the K bits of the second bit map means the information indicated by the i-th thirteenth indication information of the K thirteenth indication information.

[0100] Optionally, each thirteenth indication information can be carried in one or more bits. In other words, the second bit map can contain K segments of bits, the K thirteenth indication information is respectively carried in the K segments of bits of the second bit map, and the length of each segment of bits can be greater than or equal to 1. In this way, more bits can be used to realize flexible indication of "whether the K channel state information comprises at least one of RI, PMI and CQI".

[0101] In a possible implementation of the first aspect or the second aspect, the i-th channel state information of the K channel state information further comprises a resource index corresponding to the i-th channel state information.

[0102] According to the above scheme, the first information can indicate the K channel state information, and correspondingly, any channel state information can further comprise a resource index corresponding to the any channel state information, so that the receiver of the first information can determine the resources corresponding to the K channel state information.

[0103] In a possible implementation of the first aspect or the second aspect, the resource index corresponding to the i-th channel state information is a common index; or, in the K channel state information, the resource indexes corresponding to different channel state information are the same.

[0104] According to the above scheme, in the K channel state information, since different channel state information respectively corresponds to different configuration units contained in the first measurement configuration information, the different configuration units can be associated with the resources configured by the first measurement configuration information, and correspondingly, the channel state information obtained by performing channel measurement based on the configuration units can correspond to a same resource index, so as to reduce the complexity of resource configuration.

[0105] The third aspect of the present application provides a communication device, which is a first communication device, and the device comprises a transceiver unit and a processing unit; the transceiver unit is configured to receive first measurement configuration information, the first measurement configuration information comprising K configuration units, each configuration unit being configured to configure a terminal device to perform channel measurement based on a measurement bandwidth, K being a positive integer; the processing unit is configured to perform channel measurement based on the K configuration units to determine K channel state information; and the transceiver unit is further configured to send first information, the first information being configured to indicate the K channel state information.

[0106] In the third aspect of the present application, the component modules of the communication device can also be configured to perform the steps performed in the various possible implementations of the first aspect and achieve the corresponding technical effects, which can be referred to the first aspect for details, and will not be described here.

[0107] The fourth aspect of the present application provides a communication device, which is a second communication device, and the device comprises a transceiver unit and a processing unit; the processing unit is configured to determine first measurement configuration information; the transceiver unit is configured to send the first measurement configuration information, the first measurement configuration information comprising K configuration units, each configuration unit being configured to configure a terminal device to perform channel measurement based on a measurement bandwidth, K being a positive integer; the transceiver unit is further configured to receive first information, the first information being configured to indicate K channel state information; and the K channel state information is obtained by performing channel measurement based on the K configuration units respectively.

[0108] In the fourth aspect of the present application, the component modules of the communication device can also be used to perform the steps performed in the various possible implementation manners of the second aspect and achieve the corresponding technical effects. For details, please refer to the second aspect, which will not be described here.

[0109] The fifth aspect of the present application provides a communication device, comprising at least one processor coupled with a memory; the memory is used to store programs or instructions; the at least one processor is used to execute the programs or instructions, so that the device implements the method of any one of the possible implementation manners of the first aspect to the second aspect. Optionally, the communication device can comprise the memory.

[0110] The sixth aspect of the present application provides a communication device, comprising at least one logic circuit and an input and output interface; the logic circuit is used to execute the method of any one of the possible implementation manners of the first aspect to the second aspect.

[0111] The seventh aspect of the present application provides a communication system, comprising the first communication device and the second communication device.

[0112] The eighth aspect of the present application provides a computer readable storage medium, which is used to store one or more computer execution instructions; when the computer execution instructions are executed by a processor, the processor executes the method of any one of the possible implementation manners of the first aspect to the second aspect.

[0113] The ninth aspect of the present application provides a computer program product (or computer program), when the computer program in the computer program product is executed by a processor, the processor executes the method of any one of the possible implementation manners of the first aspect to the second aspect.

[0114] The tenth aspect of the present application provides a chip or chip system, comprising at least one processor, which is used to support the communication device to implement the method of any one of the possible implementation manners of the first aspect to the second aspect. For example, the chip can be a baseband chip, a modem chip, a system on chip (SoC) chip containing a modem core, a system in package (SIP) chip, or a communication module, etc.

[0115] In one possible design, the chip or chip system can further include a memory for storing program instructions and data necessary for the communication apparatus. The chip system can be composed of a chip or include a chip and other discrete devices. Optionally, the chip system further includes an interface circuit that provides program instructions and / or data for the at least one processor.

[0116] The technical effects brought by any of the designs in the third aspect to the tenth aspect can be referred to the technical effects brought by the different designs in the first aspect to the second aspect, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0117] FIG. 1a is a schematic diagram of a communication system related to this application;

[0118] FIG. 1b is another schematic diagram of a communication system related to this application;

[0119] FIG. 1c is another schematic diagram of a communication system related to this application;

[0120] FIG. 2 is a schematic diagram of signal transmission related to this application;

[0121] FIG. 3 is a schematic diagram of a communication method provided by this application;

[0122] FIG. 4 is a schematic diagram of a communication apparatus provided by this application;

[0123] FIG. 5 is another schematic diagram of a communication apparatus provided by this application;

[0124] FIG. 6 is another schematic diagram of a communication apparatus provided by this application;

[0125] FIG. 7 is another schematic diagram of a communication apparatus provided by this application;

[0126] FIG. 8 is another schematic diagram of a communication apparatus provided by this application. DETAILED DESCRIPTION

[0127] First, some terms in the embodiments of this application are explained to facilitate understanding by those skilled in the art.

[0128] (1) Configuration and pre-configuration: In the present application, configuration and pre-configuration will be used simultaneously. Configuration refers to that a network device such as a base station or a server sends configuration information of some parameters or values of the parameters to a terminal through a message or signaling, so that the terminal determines the parameters of communication or resources in transmission according to the values or information. Pre-configuration is similar to configuration. It can be a way in which a network device such as a base station or a server sends parameter information or values to a terminal through a communication link or carrier; or it can be a way in which the definition of corresponding parameters or parameter values is given in a standard, or the related parameters or values are set in the terminal device in advance, which is not limited in the present application. Further, these values and parameters can be changed or updated.

[0129] (2) In the present application, "for indicating" can include for directly indicating and for indirectly indicating. When describing that an indication information is for indicating A, it can be understood that the indication information carries A, directly indicates A or indirectly indicates A.

[0130] In the present application, the information indicated by the indication information is referred to as to-be-indicated information. In the specific implementation process, there are many ways to indicate the to-be-indicated information, for example, it can be realized by a direct indication manner, such as indicating by the to-be-indicated information itself or the index of the to-be-indicated information. It can also be realized by an indirect indication manner by indicating other information, wherein the other information has an association relationship with the to-be-indicated information. It can also only indicate a part of the to-be-indicated information, and the other part of the to-be-indicated information is known or agreed in advance. For example, the indication of a specific information can also be realized by means of the arrangement order of each information agreed in advance (for example, the protocol stipulates), thereby reducing the indication overhead to a certain extent.

[0131] The to-be-indicated information can be sent as a whole, or can be divided into multiple sub-information and sent separately, and the sending period and / or sending occasion of the sub-information can be the same or different. The specific sending method is not limited in the present application. The sending period and / or sending occasion of the sub-information can be predefined, for example, predefined according to a protocol, or configured by the transmitting end device to the receiving end device. The configuration information can include, for example but not limited to, one or a combination of at least two of radio resource control (RRC) signaling, medium access control (MAC) layer signaling and physical layer signaling. The MAC layer signaling includes, for example, medium access control control element (MAC CE); the physical layer signaling includes, for example, downlink control information (DCI).

[0132] (3) The terms "system" and "network" in the embodiments of the present application can be used interchangeably. "At least one" means one or more, and "multiple" means two or more. The "and / or" describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the cases of A alone, A and B together, and B alone, where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the associated objects before and after it. "At least one of the following" or similar expressions means any combination of these items, including any combination of single item or multiple items. For example, "at least one of A, B and C" includes A, B, C, AB, AC, BC or ABC. In addition, unless otherwise specified, the same or similar parts between different embodiments in the present application can be mutually referred to. In the present application, different embodiments and the terms and / or descriptions of the methods / designs / implementation manners in each embodiment have consistency and can be mutually referred to, unless otherwise specified and there is no logical conflict. The technical features of different embodiments and the methods / designs / implementation manners in each embodiment can be combined to form new embodiments, methods or implementation manners according to their inherent logical relationship. The implementation manners of the present application described below do not constitute a limitation on the protection scope of the present application.

[0133] In addition, in the present application, unless otherwise specified, the same or similar parts between different embodiments can be mutually referred to. In the present application, different embodiments and the terms and / or descriptions of the methods / designs / implementation manners in each embodiment have consistency and can be mutually referred to, unless otherwise specified and there is no logical conflict. The technical features of different embodiments and the methods / designs / implementation manners in each embodiment can be combined to form new embodiments, methods or implementation manners according to their inherent logical relationship. The implementation manners of the present application described below do not constitute a limitation on the protection scope of the present application.

[0134] (4) Reference signal (RS), also known as pilot signal. In a communication system, it is necessary to transmit and receive data, obtain system synchronization and feedback channel information, estimate uplink channel or downlink channel. Channel estimation refers to the process of reconstructing or recovering received signals to compensate for signal distortion caused by channel fading and noise fading. It uses reference signals known by the transmitter and the receiver to track the time domain and frequency domain changes of the channel. The above reference signals, also known as reference signals, are distributed in different resource elements (REs) in the time-frequency two-dimensional space within the orthogonal frequency division multiplexing (OFDM) symbol, and have known amplitude and phase.

[0135] At the physical layer, uplink communication can include transmission of uplink physical channels and uplink signals. Among them, the uplink physical channel includes a random access channel (PRACH), an uplink control channel (PUCCH), an uplink data channel (PUSCH), etc., and the uplink signal includes a channel sounding signal (SRS), an uplink control channel demodulation reference signal (PUCCH-DMRS), an uplink data channel demodulation reference signal (PUSCH-DMRS), an uplink phase noise tracking signal (PTRS), an uplink positioning signal (uplink positioning RS), etc.

[0136] At the physical layer, the downlink communication can include transmission of downlink physical channels and downlink signals. Among them, the downlink physical channels include a broadcast channel (physical broadcast channel, PBCH), a downlink control channel (physical downlink control channel, PDCCH), a downlink data channel (physical downlink shared channel, PDSCH), etc., and the downlink signals include a primary synchronization signal (PSS) / secondary synchronization signal (SSS), a downlink control channel demodulation reference signal PDCCH-DMRS, a downlink data channel demodulation reference signal PDSCH-DMRS, a phase noise tracking signal PTRS, a channel state information reference signal (CSI-RS), a cell signal (CRS) (NR does not have), a fine synchronization signal (TRS) (LTE does not have), an LTE / NR positioning signal (positioning RS), etc.

[0137] (5) In the embodiments of the present application, "sending" and "receiving" represent the direction of signal transmission. For example, taking the communication process between entity A and entity B as an example. In the present application, entity A sends information to entity B, which can be that A directly sends to B, or A indirectly sends to B through other entities. Similarly, entity B receives information from entity A, which can be that entity B directly receives the information sent by entity A, or entity B indirectly receives the information sent by entity A through other entities. Here, entity A and B can be radio access network (RAN) nodes or terminals, or modules inside the RAN nodes or terminals. The sending and receiving of information can be the information interaction between the RAN nodes and the terminals, for example, the information interaction between the base station and the terminal; the sending and receiving of information can also be the information interaction between two RAN nodes, for example, the information interaction between the central unit (CU) and the distributed unit (DU); the sending and receiving of information can also be the information interaction between different modules inside one device, for example, the information interaction between the terminal chip and other modules of the terminal, or the information interaction between the base station chip and other modules in the base station. "Sending" can also be understood as the "output" of the chip interface, and "receiving" can also be understood as the "input" of the chip interface.

[0138] The present application can be applied to a long term evolution (LTE) system, a new radio (NR) system, or other communication systems, wherein the communication system includes a network device and a terminal device, the network device acts as a configuration information sending entity, and the terminal device acts as a configuration information receiving entity. Specifically, in the communication system, one entity sends configuration information to another entity, and sends data to another entity or receives data sent by another entity; another entity receives configuration information and sends data to the configuration information sending entity according to the configuration information or receives data sent by the configuration information sending entity. Wherein, the present application can be applied to a terminal device in a connected state or an active state (ACTIVE), or can be applied to a terminal device in an inactive state (INACTIVE) or an idle state (IDLE).

[0139] Referring to FIG. 1a, an architecture diagram of a communication system 1000 to which embodiments of the present application are applied is shown. As shown in FIG. 1a, the communication system includes a radio access network (RAN) 100 and a core network 200. Optionally, the communication system 1000 can further include an Internet 300. The RAN 100 includes at least one RAN node (e.g., 110a and 110b in FIG. 1a, collectively referred to as 110) and at least one terminal (e.g., 120a-120j in FIG. 1a, collectively referred to as 120). The RAN 100 can further include other RAN nodes, such as a wireless relay device and / or a wireless backhaul device (not shown in FIG. 1a). The terminal 120 is connected to the RAN node 110 in a wireless manner, and the RAN node 110 is connected to the core network 200 in a wireless or wired manner. The core network device in the core network 200 and the RAN node 110 in the RAN 100 can be independent and different physical devices, or can be the same physical device integrated with the logical functions of the core network device and the logical functions of the RAN node. Terminals and terminals, and RAN nodes and RAN nodes can be connected to each other in a wired or wireless manner.

[0140] The RAN 100 can be an evolved universal terrestrial radio access (E-UTRA) system, an NR system, and a future wireless access system defined in the 3rd generation partnership project (3GPP). The RAN 100 can also include two or more different wireless access systems described above. The RAN 100 can also be an open RAN (O-RAN).

[0141] The RAN node, also referred to as a radio access network device, a RAN entity, or an access node, is used to help terminals access the communication system in a wireless manner. In an application scenario, the RAN node can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next generation NodeB (gNB) in a 5th generation (5G) mobile communication system, or a base station in a future mobile communication system. The RAN node can be a macro base station (e.g., 110a in FIG. 1a), a micro base station or an indoor station (e.g., 110b in FIG. 1a), a relay node or a donor node.

[0142] In another application scenario, a terminal can be helped to access wirelessly by cooperation of a plurality of RAN nodes, different RAN nodes implementing part of functions of a base station respectively. For example, a RAN node can be a central unit (CU), a distributed unit (DU), or a radio unit (RU). Here, the CU implements functions of a radio resource control protocol and a packet data convergence protocol (PDCP) of a base station, and can also implement functions of a service data adaptation protocol (SDAP); the DU implements functions of a radio link control layer and a MAC layer of a base station, and can also implement part of functions or all functions of a physical layer; and specific descriptions about the protocol layers mentioned above can be referred to relevant technical specifications of the 3GPP. The RU can be used to implement functions of transceiving radio frequency signals. The CU and the DU can be two independent RAN nodes, or can be integrated in a same RAN node, for example, integrated in a baseband unit (BBU). The RU can be included in a radio frequency device, for example, included in a remote radio unit (RRU) or an active antenna unit (AAU). The CU can be further divided into two types of RAN nodes, a control unit control plane (CU-CP) and a control unit user plane (CU-UP).

[0143] In different systems, the CU (or CU-CP and CU-UP), DU or RU can also have different names, but those skilled in the art can understand their meanings. For example, in an open radio access network (O-RAN or ORAN) system, the CU can also be referred to as an open CU (ORAN CU, O-CU), the DU can also be referred to as an open DU (ORAN DU, O-DU), the CU-CP can also be referred to as an open CU-CP (ORAN CU-CP, O-CU-CP), the CU-UP can also be referred to as an open CU-UP (ORAN CU-UP, O-CU-UP), and the RU can also be referred to as an open RU (ORAN RU, O-RU). For the convenience of description, the CU, CU-CP, CU-UP, DU and RU are taken as examples for description in this application. Any one of the CU (or CU-CP, CU-UP), DU and RU in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0144] The communication between the access network device and the terminal device follows a certain protocol layer structure. The protocol layer can include a control plane protocol layer and a user plane protocol layer. The control plane protocol layer can include at least one of the following: an RRC layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, a media access control (MAC) layer, or a physical (PHY) layer, etc. The user plane protocol layer can include at least one of the following: a service data adaptation protocol (SDAP) layer, a PDCP layer, an RLC layer, a MAC layer, or a physical layer, etc.

[0145] For the correspondence relationship between the network elements in the ORAN system and the protocol layer functions that can be implemented, refer to Table 1 below.

[0146] Table 1

[0147] FIG. 1b is an example diagram of an O-RAN system. As shown in FIG. 1b, the network device can include an access network device. The access network device (RAN, which can be an eNB or a gNB or a next-generation access network device) communicates with the core network (CN) through a backhaul link and communicates with the user equipment (UE) through an air interface.

[0148] For example, a baseband unit (BBU) in an access network device communicates with a core network (CN) through a backhaul link, and a radio unit (RU) in the access network device communicates with at least one terminal device through an air interface. The BBU communicates with at least one RU through a fronthaul link, and the BBU and the RU can be co-located or not co-located.

[0149] Optionally, the BBU includes at least one control unit (CU) and at least one distributed unit (DU), which can communicate through at least one midhaul link.

[0150] FIG. 1c is another example diagram of an O-RAN system. It involves a network element function division and a protocol layer structure diagram of an O-RAN device.

[0151] In some examples, the CU is a logical node that carries the RRC layer, the SDAP layer, the PDCP layer, and other control functions of the access network device. The CU is connected to network nodes such as the core network through some interfaces, which can be E2 interfaces or the like. Optionally, the CU can have part of the functions of the core network. The CU (e.g., the PDCP layer and higher layers) is connected to the DU (e.g., the RLC layer and lower layers) through some interfaces, which can be F1 interfaces or the like. In some examples, these interfaces (e.g., F1 interfaces) 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 an application protocol for the F1 interface, which defines the signaling procedures of F1 in some examples. The F1 interface supports the control plane F1-C and the user plane F1-U.

[0152] In some examples, a CU can be split into a CU-CP and a CU-UP, where the CU-CP is a logical node carrying RRC layer and PDCP-C (i.e. control plane part of PDCP) layer, for implementing control plane functions of the CU. The CU-CP can interact with a network element in the core network for implementing control plane functions. The network element in the core network for implementing control plane functions can be an access and mobility function network element, such as an access and mobility management function (AMF) in a 5G system. The AMF network element is responsible for mobility management in a mobile network, such as location update of a terminal device, registration of the terminal device to a network, handover of the terminal device, etc. The CU-UP is a logical node carrying SDAP layer and PDCP-U (i.e. user plane part of PDCP) layer, for implementing user plane functions of the CU. The CU-UP can interact with a network element in the core network for implementing user plane functions. The network element in the core network for implementing user plane functions, such as a user plane function (UPF) in a 5G system, is responsible for forwarding and receiving data in a terminal device. The above configuration of CU and DU is merely an example, and the CU and DU can be configured to have other functions according to needs. For example, the CU or the DU can be configured to have more protocol layer functions, or the CU or the DU can be configured to have partial processing functions of the protocol layers. For example, partial functions of the RLC layer and functions of the protocol layers above the RLC layer can be configured in the CU, and the remaining functions of the RLC layer and functions of the protocol layers below the RLC layer can be configured in the DU. For another example, the functions of the CU or the DU can be divided according to service types or other system requirements, such as dividing functions according to latency requirements, and functions that need to meet a latency requirement can be configured in the DU, and functions that do not need to meet the latency requirement can be configured in the CU.

[0153] In some examples, a DU is a logical node carrying RLC layer, MAC layer, higher physical (Higher PHY) layer and other functions. In some examples, a DU can control at least one RU. The DU is connected to the RU through some interfaces, which can be fronthaul interfaces. In some examples, the Higher PHY layer includes part of the PHY layer processing, such as forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, etc.

[0154] In some examples, a RU is a logical node that hosts lower physical layer (Lower PHY) and radio frequency (RF) processing. In some examples, a RU can be a 3GPP transmission reception point (TRP) or a remote radio head (RRH) or other similar functional entity. In some examples, a Low-PHY includes portions of PHY processing such as fast Fourier transform (FFT), inverse fast Fourier transformation (IFFT), digital beamforming and filtering, and other processing functions. A RU communicates with one or more UEs over a wireless link.

[0155] A DU and a RU can or can not be co-located. A DU and a RU exchange control plane information and user plane information over a fronthaul link via a lower-layer split-control, user and synchronization (Lower-Layer Split CUS-Plane, LLS-CUS) interface. The LLS-CUS can include a LLS-C interface and a LLS-U interface that provide a control plane (C-Plane) and a user plane (U-Plane), respectively. In some examples, a control plane (C-Plane) refers to real-time control between a DU and a RU. A DU and a RU have a LLS-M interface of a fronthaul link to exchange management information, and a management plane (M-Plane) refers to non-real-time management operations between a DU and a RU.

[0156] A DU and a RU can cooperate to collectively implement the functionality of a PHY layer. A DU can be connected to one or more RUs. The functionality that a DU and a RU have can be configured in multiple ways according to design. For example, a DU is configured to implement baseband functionality and a RU is configured to implement mid- RF functionality. As another example, a DU is configured to implement high-layer functionality in a PHY layer and a RU is configured to implement low-layer functionality in the PHY layer or to implement the low-layer functionality and RF functionality. High-layer functionality in a PHY layer can include a portion of functionality of a PHY layer that is closer to a MAC layer, and low-layer functionality in a PHY layer can include another portion of functionality of a PHY layer that is closer to a mid-RF side.

[0157] In different systems, the CU (or CU-CP and CU-UP), DU or RU can also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, the CU can also be referred to as O-CU (open CU), the DU can also be referred to as O-DU, the CU-CP can also be referred to as O-CU-CP, the CU-UP can also be referred to as O-CU-UP, and the RU can also be referred to as O-RU. For the convenience of description, the CU, CU-CP, CU-UP, DU and RU are taken as examples for description in this application.

[0158] For the convenience of description, a base station is taken as an example of a RAN node in the following description.

[0159] A terminal is a device with wireless transceiver function, which can send signals to a base station or receive signals from a base station. Alternatively, a terminal can be a device or module with corresponding communication function for accessing the above-mentioned communication system. A communication module, circuit or chip for performing corresponding communication function is usually arranged in a terminal. A terminal also has program instructions configured for performing corresponding communication function.

[0160] A terminal can also be referred to as a terminal device, user equipment (UE), mobile station, mobile terminal, etc. A terminal can be widely applied in various scenarios, such as device-to-device (D2D), vehicle to everything (V2X) communication, machine-type communication (MTC), internet of things (IOT), virtual reality, augmented reality, industrial control, autonomous driving, remote medical treatment, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc. A terminal can be a mobile phone, tablet computer, computer with wireless transceiver function, wearable device, vehicle, airplane, ship, robot, mechanical arm, smart home device, transport vehicle with wireless communication function, communication module, road side unit (RSU) with terminal function, etc. Embodiments of the present application do not limit the specific technology and specific device form of the terminal.

[0161] A base station and a terminal can be fixed in position or movable. A base station and a terminal can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on water surface; can also be deployed on an airplane, balloon and artificial satellite. Embodiments of the present application do not limit the application scenarios of the base station and the terminal.

[0162] The roles of the base station and the terminal can be relative. For example, the helicopter or the drone 120i in FIG. 1a can be configured as a mobile base station, and for the terminal 120j that accesses the wireless access network 100 through the 120i, the terminal 120i is a base station; but for the base station 110a, the 120i is a terminal, that is, the 110a and the 120i communicate through a wireless air interface protocol. Of course, the 110a and the 120i can also communicate through a base station-to-base station interface protocol, and in this case, the 120i is also a base station relative to the 110a. Therefore, the base station and the terminal can be collectively referred to as a communication device, and the 110a and the 110b in FIG. 1a can be referred to as a communication device with a base station function, and the 120a-120j in FIG. 1a can be referred to as a communication device with a terminal function.

[0163] The base station and the terminal, the base station and the base station, and the terminal and the terminal can communicate through a licensed frequency spectrum, an unlicensed frequency spectrum, or both. They can communicate through a frequency spectrum below 6 gigahertz (GHz), a frequency spectrum above 6 GHz, or both. The embodiments of the present application do not limit the frequency spectrum resources used for wireless communication.

[0164] In the embodiments of the present application, the functions of the base station can also be performed by a module (such as a chip) in the base station or by a control subsystem containing base station functions. The control subsystem containing base station functions herein can be a control center in the above-mentioned application scenarios such as smart grids, industrial control, intelligent transportation, and smart cities. The functions of the terminal can also be performed by a module (such as a chip or a modem) in the terminal or by a device containing terminal functions.

[0165] Currently, in a communication system (such as the systems shown in FIG. 1a and FIG. 1b), different communication devices can use multi-input multi-output (MIMO) technology for communication. In this communication process, a signal sender can send a channel measurement signal (such as a reference signal), a signal receiver can receive the channel measurement signal, and the signal receiver can measure channel information based on the channel measurement signal, and subsequent high-rate data transmission can be implemented based on the channel information. For example, a communication device can perform high-rate data transmission through precoding information corresponding to the channel information. For another example, a communication device can perform multi-user resource allocation through channel information, which can reduce the interference between different users to improve the overall system performance. However, in the above channel measurement process, how to improve the signal transmission performance is a technical problem to be solved.

[0166] In a possible implementation, since the signal strength is related to the distance between the network device and the terminal device, the farther the distance between the two, the weaker the signal, and vice versa, the closer the distance between the two, the stronger the signal. Therefore, for a terminal device with weak signal strength, the network device can improve the signal strength by narrowing the transmission bandwidth.

[0167] As shown in the example of FIG. 2, the center frequency point of the full bandwidth (or available bandwidth) occupied by the signal and the center frequency point of the actual transmission bandwidth of the signal are the same. The full bandwidth can be the bandwidth of the cell, or the bandwidth corresponding to the currently activated BWP in the cell.

[0168] For the full bandwidth (or available bandwidth), the starting frequency domain position of the full bandwidth (or available bandwidth) is the x-2kth frequency domain unit (x and k are natural numbers), and the ending frequency domain position is the x+2k-1th frequency domain unit, for example, that is, the full bandwidth (or available bandwidth) contains 4k frequency domain units. In this case, the signal transmission power of the full bandwidth is y (y is a positive number), which can be in watts (W), or decibel milliwatts (dBm), and the like.

[0169] For the actual transmission bandwidth of the signal, the starting frequency domain position of the actual transmission bandwidth of the signal is the x-kth frequency domain unit, and the ending frequency domain position is the x+k-1th frequency domain unit, for example, that is, the full bandwidth contains 2k frequency domain units. In this case, the signal transmission power of the full bandwidth is 2y.

[0170] As can be seen from the above example, the actual transmission bandwidth of the signal is only half of the full bandwidth (or available bandwidth), which can double the frequency domain power density, that is, the transmission power on each resource particle is doubled. In other words, in the case where the transmission power of the signal sent at the signal sending end remains the same or similar, by reducing the signal transmission bandwidth, the transmission power of the signal can be improved, so that the signal reception power of the receiving side is improved to improve the signal transmission performance.

[0171] The above method of narrowing the bandwidth to improve the signal transmission performance can be applied to the transmission process of a channel measurement signal. For example, the channel measurement signal can be a downlink reference signal sent by the network device to the terminal device, including a synchronization signal / physical broadcast channel block (SSB or SS / PBCH block), a channel state information reference signal (CSI-RS), or other downlink reference signals.

[0172] Generally, in downlink transmission, the network device can obtain the downlink channel information that needs to be known through channel state information (CSI) measurement feedback. Specifically, the following steps are included.

[0173] 1. The network device configures CSI measurement configuration information for the terminal device, including information of measurement resources, related parameters of measurement result reporting, etc.

[0174] 2. The network device sends a channel measurement signal (for example, a downlink reference signal).

[0175] 3. The terminal device measures the channel measurement signal.

[0176] 4. The terminal device reports the measurement result, that is, reports the CSI information.

[0177] The current CSI measurement is to measure the full bandwidth by default, and the network device can obtain the CSI information of the full bandwidth based on this. When the network device adopts the transmission mode of the above-mentioned contracted bandwidth, the CSI information of the full bandwidth does not match the actual transmission bandwidth.

[0178] In one possible implementation, in order to solve the problem that the CSI information of the full bandwidth does not match the actual transmission bandwidth, the terminal device can perform conversion based on the full bandwidth CSI to obtain the CSI information of the contracted bandwidth. Specifically, the conversion includes the conversion of CQI, RI, and PMI, including:

[0179] For CQI, the terminal device performs isometric conversion on the CQI according to the ratio of the actual transmission bandwidth to the bandwidth corresponding to the CSI. For example, if the actual transmission bandwidth is half of the bandwidth corresponding to the CSI, the CQI is increased by 3 dB.

[0180] For RI, the terminal device directly adopts the same RI.

[0181] For PMI, the terminal device directly adopts the same PMI.

[0182] However, the above-mentioned conversion to obtain the CSI information corresponding to the contracted bandwidth transmission has the problem of low measurement accuracy. For example, the CQI conversion is not accurate: since CQI itself is the result of quantization of signal to interference plus noise ratio (SINR), the quantization itself has an error, and the numerical conversion in the technology of CQI further introduces an error. For another example, RI and PMI are not accurate: after power enhancement, the number of transmission layers may be increased, that is, RI is increased. At this time, a higher RI and the corresponding PMI should be used for transmission.

[0183] To solve the above problems, the present application provides a communication method and related devices, which will be described in detail below in conjunction with the accompanying drawings.

[0184] Please refer to FIG. 3, which is an implementation schematic diagram of the communication method provided by the present application, and the method comprises the following steps.

[0185] It should be noted that the first communication device and the second communication device are taken as an example in FIG. 3 to illustrate the execution subject of the interaction, but the present application does not limit the execution subject of the interaction. For example, in FIG. 3, the execution subject of the method can be replaced by a chip, a baseband chip, a modem chip, a system on chip (SoC) chip containing a modem core, a system in package (SIP) chip, a communication module, a chip system, a processor, a logic module or software in the communication device.

[0186] As an example, the first communication device can be a terminal device and the second communication device can be a network device. In this case, the channel measurement signal (such as a reference signal) referred to hereinafter can be a downlink reference signal, including SSB, CSI-RS, etc.

[0187] Optionally, in the above example, the second communication device can be a network device in the ORAN architecture. In the following step S301, the first measurement configuration information can be generated by the O-CU and / or the O-DU, and the first measurement configuration information can be sent by the O-RU. In the following step S303, the O-RU can receive the first information, and the K channel state information can be determined by the O-CU and / or the O-DU.

[0188] As another example, the first communication device and the second communication device are both terminal devices, i.e., the scheme shown in FIG. 3 can be applied to a sidelink communication scenario. In this case, the channel measurement signal (such as a reference signal) referred to hereinafter can be a sidelink reference signal, including a sidelink-synchronization signal block (S-SSB or SL-SSB), or a sidelink channel state information reference signal (SL-CSI-RS), etc.

[0189] S301. The second communication device sends the first measurement configuration information, and correspondingly, the first communication device receives the first measurement configuration information. The first measurement configuration information comprises K configuration units, each configuration unit is used to configure the terminal device to perform channel measurement based on a measurement bandwidth, and K is a positive integer.

[0190] S302. The first communication device performs channel measurement according to the K configuration units, and determines K channel state information. For example, the first communication device can receive a channel measurement signal on a measurement bandwidth corresponding to any one of the K configuration units according to the any one of the K configuration units, and determine channel state information corresponding to the any one of the K configuration units based on the channel measurement signal on the measurement bandwidth corresponding to the any one of the K configuration units.

[0191] S303. The first communication device sends first information, and the second communication device receives the first information. The first information is used to indicate the K channel state information.

[0192] It should be understood that the first measurement configuration information includes K configuration units, and the measurement bandwidths corresponding to different configuration units can be different. In other words, the K configuration units correspond to K measurement bandwidths respectively, and different measurement units are different in the K measurement units. For example, in the K configuration units, the k-th configuration unit is used to configure the terminal device to perform channel measurement based on the k-th measurement bandwidth, and k takes a value from 1 to K.

[0193] Optionally, in the K measurement units, different measurement units are different; it can be understood that for any two measurement units of the K measurement units, at least one of the following conditions is met: the starting frequency domain positions of the two measurement units are different, the ending frequency domain positions of the two measurement units are different, or the measurement bandwidths of the two measurement units are different.

[0194] It should be understood that because the sender of the channel measurement signal transmits the channel measurement signal on different sizes of bandwidths based on the same or similar signal transmission power, the transmission power (for example, frequency domain power density) of the channel measurement signal transmitted on different sizes of bandwidths is different, where the transmission bandwidth of the channel measurement signal and the transmission power of the channel measurement signal can have a correlation relationship. For example, the larger the transmission bandwidth of the channel measurement signal, the smaller the transmission power of the channel measurement signal; on the contrary, the smaller the transmission bandwidth of the channel measurement signal, the larger the transmission power of the channel measurement signal. Correspondingly, one configuration unit is used to configure the terminal device to perform channel measurement based on one measurement bandwidth, which can be understood as each configuration unit is used to configure the terminal device to perform channel measurement based on one transmission power (for example, reception power or transmission power, etc.).

[0195] In a possible implementation, in step S302, the first communication device performs channel measurement according to the K configuration units, and determines K channel state information, including:

[0196] For any configuration unit of the K configuration units, the first communication apparatus determines a measurement bandwidth corresponding to the any configuration unit according to the configuration information in the any configuration unit, and determines the channel state information corresponding to the any configuration unit according to the measurement bandwidth; or

[0197] For any configuration unit of the K configuration units, the first communication apparatus determines a transmission power corresponding to the any configuration unit according to the configuration information in the any configuration unit, and determines the channel state information corresponding to the any configuration unit according to the transmission power.

[0198] Specifically, in the process of the first communication apparatus performing channel measurement based on the K configuration units to obtain the K channel state information, after the first communication apparatus determines the measurement bandwidth or the transmission power corresponding to any configuration unit based on the configuration information in the any configuration unit, the first communication apparatus can determine the channel state information corresponding to the any configuration unit based on the measurement bandwidth or the transmission power, so that the first communication apparatus obtains the channel state information at a specific measurement bandwidth or transmission power.

[0199] For example, taking the first communication apparatus as a terminal device, in step S302, the terminal device performs channel measurement according to each bandwidth shrinkage configuration information. For example, the terminal device performs channel estimation at a specific frequency domain location according to the frequency domain location information configured in the bandwidth shrinkage configuration information, and then calculates the CSI information corresponding to the channel in the segment. Alternatively, the terminal device takes a frequency domain channel according to the start frequency domain location and the end frequency domain location, and determines the CSI information of the frequency domain channel. Thereafter, when the terminal device calculates the CSI information, the terminal device can calculate in combination with the power scaling coefficient or the bandwidth scaling coefficient. For example, when the terminal device calculates the signal-to-noise ratio of the channel, the terminal device multiplies the power scaling coefficient or the bandwidth scaling coefficient into the signal strength for calculation.

[0200] Based on the scheme shown in FIG. 3, the first communication apparatus can perform measurement on one or more measurement bandwidths based on the K configuration units contained in the first measurement configuration information, and indicate the K channel state information corresponding to the K configuration units respectively through the first information. Since the sender of the channel measurement signal is based on the same or similar signal transmission power, the transmission power (for example, the frequency domain power density) of the channel measurement signal transmitted on different size bandwidths is different, so that in the process of the first communication apparatus performing channel measurement based on the measurement configuration information, the first communication apparatus can receive the channel measurement signal with the corresponding received power on the specific measurement bandwidth, to improve the transmission performance of the channel measurement signal.

[0201] For example, when the sender of the channel measurement signal is far away from the first communication device, a smaller bandwidth can be used to transmit the channel measurement signal, so that the first communication device can receive the channel measurement signal with stronger power in a smaller bandwidth, and the success rate of receiving and analyzing the channel measurement signal is improved.

[0202] For another example, when the sender of the channel measurement signal is close to the first communication device, a larger bandwidth can be used to transmit the channel measurement signal, so that the first communication device can receive the channel measurement signal with weaker power in a larger bandwidth, and the power consumption of the sender is saved, and the first communication device can obtain the channel state information in the larger bandwidth based on the measurement of the channel measurement signal.

[0203] In addition, compared with the implementation mode in which the communication device performs channel measurement based on the default full bandwidth to obtain the estimated channel state information in other bandwidths, in the above scheme, the first communication device can indicate K pieces of channel state information through the first information, and the K pieces of channel state information are obtained based on channel measurement in K measurement bandwidths configured by the K configuration units. Therefore, the first communication device can receive the channel measurement signal in a specific transmission bandwidth, and obtain the channel state information in a specific measurement bandwidth, and the acquisition of the channel state information in one or more measurement bandwidths can be flexibly implemented, and the accuracy of the channel state information obtained by the communication device is improved.

[0204] Optionally, in step S302, the first information can indicate the channel state information in the full bandwidth. Correspondingly, the second communication device can configure the configuration unit corresponding to the full bandwidth to the first communication device. For example, K is greater than or equal to 2, and the bandwidth of one of the K configuration units is the full bandwidth. For another example, the bandwidth of any one of the K configuration units is not the full bandwidth, and the network device configures the configuration unit corresponding to the full bandwidth through the first measurement configuration information or other measurement configuration information.

[0205] In a possible implementation mode of the method shown in FIG. 3, the method further includes that the first communication device sends second information, and correspondingly, the second communication device receives the second information, and the second information is used to indicate at least one of the following capability information: whether to support receiving based on the contracted bandwidth, whether to support transmitting based on the contracted bandwidth, the maximum multiple of the supported bandwidth contraction, or whether to support measuring the channel state information in multiple contracted bandwidths. In other words, the first communication device can further send the second information, so that the receiver (for example, the second communication device) of the second information determines that the first communication device has the at least one of the above capability information through the second information, and provides the first communication device with the corresponding measurement configuration information (for example, the first measurement configuration information in step S301) based on the at least one of the capability information.

[0206] In a possible implementation of the step S301, the first measurement configuration information contains K configuration units, any configuration unit of the K configuration units includes at least one of the following:

[0207] first indication information indicating an identifier or an index of the any configuration unit;

[0208] second indication information indicating a starting frequency domain position corresponding to the any configuration unit;

[0209] third indication information indicating a terminal frequency domain position corresponding to the any configuration unit;

[0210] fourth indication information indicating a quantity of frequency domain resources (which can be resource blocks (RBs), resource block groups (RBGs), or subcarriers, etc.) corresponding to the any configuration unit;

[0211] fifth indication information indicating a bandwidth scaling coefficient, the bandwidth scaling coefficient being used to indicate a ratio of a measurement bandwidth corresponding to the any configuration unit to a first bandwidth, the first bandwidth being a bandwidth of a cell corresponding to the first measurement configuration information, or the first bandwidth being a bandwidth corresponding to a currently activated BWP in the cell corresponding to the first measurement configuration information;

[0212] sixth indication information indicating a power scaling coefficient, the power scaling coefficient being used to indicate a ratio of a first power to a second power, the first power being a transmission power assumed by the terminal device when performing measurement based on measurement in the measurement bandwidth corresponding to the any configuration unit, the second power being a transmission power assumed by the terminal device when performing measurement based on the first bandwidth, or the second power being a transmission power configured by the network device for the terminal device.

[0213] Optionally, the sixth indication information can be implemented in other manners. For example, the sixth indication information indicates a power scaling coefficient, the power scaling coefficient being used to indicate a ratio of a first power to a second power, the first power being a transmission power of the terminal device when performing measurement based on measurement in the measurement bandwidth corresponding to the any configuration unit, the second power being a transmission power of the terminal device when performing measurement based on the first bandwidth, or the second power being a transmission power configured by the network device for the terminal device.

[0214] Specifically, any configuration unit of the K configuration units can include the at least one of the above, so as to improve flexibility of the implementation of the scheme.

[0215] As an example, the any configuration unit comprises the second indication information and the third indication information. Alternatively, the second indication information and / or the third indication information is pre-configured. Alternatively, the second indication information and / or the third indication information is configured by other information / message / signaling.

[0216] As another example, the any configuration unit comprises the second indication information and the fourth indication information. Alternatively, the second indication information and / or the fourth indication information is pre-configured. Alternatively, the second indication information and / or the fourth indication information is configured by other information / message / signaling.

[0217] As another example, the any configuration unit comprises the third indication information and the fourth indication information. Alternatively, the third indication information and / or the fourth indication information is pre-configured. Alternatively, the third indication information and / or the fourth indication information is configured by other information / message / signaling.

[0218] According to any of the above examples, the any configuration unit can configure a measurement bandwidth corresponding thereto.

[0219] Optionally, in any of the above examples, the any configuration unit can further comprise first indication information.

[0220] Optionally, in any of the above examples, the any configuration unit can further comprise fifth indication information.

[0221] Optionally, in any of the above examples, the any configuration unit can further comprise sixth indication information.

[0222] For example, the first communication device is a terminal device, and the second communication device is a network device. The network device can send the measurement configuration information (i.e., the first measurement configuration information) to the terminal device in step S302.

[0223] For example, the network device sends an RRC configuration signaling to the terminal device for configuring the measurement configuration parameters, which is an example of the first measurement configuration information. The measurement configuration parameters can comprise one or more report configurations. Each report configuration is associated with one or more resource configurations. Each resource configuration can be used for channel measurement or interference measurement. Each resource configuration comprises one or more resource sets. The resource sets configured in the resource configuration for channel measurement are resource sets for channel measurement. The resource sets configured in the resource configuration for interference measurement are resource sets for interference measurement. Each resource set comprises one or more measurement resources.

[0224] In addition, the RRC configuration information received by the terminal device can include multiple bandwidth shrinkage measurement configuration information, each bandwidth shrinkage configuration information being used to measure CSI information in a bandwidth shrinkage mode. For example, the RRC configuration information includes K bandwidth shrinkage configuration information, and the terminal device needs to measure based on the K bandwidth shrinkage configuration information to obtain K sets of CSI information corresponding to the K bandwidth shrinkage configuration information, each bandwidth shrinkage configuration information corresponding to a set of CSI information. Optionally, in addition to obtaining the K sets of CSI information corresponding to the K bandwidth shrinkage configuration information, the terminal device can also obtain a set of CSI information without any bandwidth shrinkage. The K bandwidth shrinkage configuration information can be configured in the reporting configuration information, and each bandwidth shrinkage configuration includes at least one of the first indication information, the second indication information, the third indication information, the fourth indication information, the fifth indication information, and the sixth indication information.

[0225] In a possible implementation of the step S303, the first information indicates K channel state information, which can be implemented in multiple ways, which will be described in combination with some implementation examples.

[0226] Implementation example one: i is 1 to K, and the i-th channel state information in the K channel state information includes at least one of the following:

[0227] Seventh indication information indicating whether the i-th channel state information includes at least one of a rank indicator (RI) and a precoding matrix indicator (PMI);

[0228] Eighth indication information indicating a first identifier of one of the K configuration units; wherein the RI included in the i-th channel state information is the same as the RI included in the channel state information of the configuration unit corresponding to the first identifier, and / or the PMI included in the i-th channel state information is the same as the PMI included in the channel state information of the configuration unit corresponding to the first identifier.

[0229] In the implementation example one, any channel state information in the K channel state information indicated by the first information can include the seventh indication information and / or the eighth indication information to implement the indication of the RI and / or the PMI.

[0230] Optionally, the i-th channel state information includes the seventh indication information; wherein in the case where the seventh indication information indicates that the i-th channel state information does not include at least one of the RI and the PMI, the i-th channel state information includes the eighth indication information.

[0231] In a possible implementation of the example one, the first information includes a first part and a second part.

[0232] The first part includes at least one of the following: the seventh indication information, the ninth indication information, or the tenth indication information.

[0233] The second part includes at least one of the following: the eighth indication information, the eleventh indication information, or the twelfth indication information.

[0234] The ninth indication information indicates resource indexes corresponding to the K channel state information, the tenth indication information indicates channel quality indicators (CQIs) corresponding to the K channel state information respectively, the eleventh indication information indicates RIs corresponding to the K channel state information respectively, and the twelfth indication information indicates PMIs corresponding to the K channel state information respectively.

[0235] Specifically, any channel state information in the K channel state information indicated by the first information can include an RI, a PMI, and a CQI, and correspondingly, the first information can indicate the RI, the PMI, and the CQI contained in the any channel state information through the first part and the second part.

[0236] Optionally, the first information includes K seventh indication information, and the K seventh indication information respectively indicates whether the K channel state information includes at least one of an RI and a PMI; and the K seventh indication information is respectively carried in K bits in a first bit map. Specifically, the first information can indicate the K channel state information, and the first information can realize indication of the K seventh indication information through K bits in the first bit map, so as to realize indication of whether the K channel state information includes at least one of an RI and a PMI.

[0237] Optionally, the K seventh indication information is respectively carried in K bits in the first bit map, which can be understood as that an i th seventh indication information in the K seventh indication information is carried in an i th bit in the K bits in the first bit map, or a value of the i th bit in the K bits in the first bit map means information indicated by the i th seventh indication information in the K seventh indication information.

[0238] Optionally, each seventh indication information can be carried in one or more bits. In other words, the first bit map can include K segments of bits, the K seventh indication information is respectively carried in the K segments of bits in the first bit map, and the length of each segment of bits can be greater than or equal to 1. In this way, more bits can be used to flexibly indicate whether the K channel state information includes at least one of an RI and a PMI.

[0239] For example, the seventh indication information can be implemented in various ways.

[0240] For example, the seventh indication information is 1 bit, and the value of the 1 bit is used to indicate whether the RI is included.

[0241] For example, the seventh indication information is 1 bit, and the value of the 1 bit is used to indicate whether the PMI is included.

[0242] For example, the seventh indication information is 1 bit, and the value of the 1 bit is used to indicate whether the RI and the PMI are included.

[0243] For example, the seventh indication information is 2 bits, and the value of the 2 bits is used to indicate any one of the following: only the RI is included, only the PMI is included, the RI and the PMI are included, and the RI and the PMI are not included.

[0244] For example, the seventh indication information corresponding to a plurality of channel state information is indicated by a bitmap. For example, each bit corresponds to one channel state information, and is used to indicate whether the RI and / or the PMI are included in the corresponding channel state information.

[0245] It should be understood that in the implementation of example one, the seventh indication information included in the first part is in an associated relationship with the eighth indication information included in the second part.

[0246] As an example, for the i-th channel state information in the K channel state information, if the seventh indication information included in the first part indicates that the i-th channel state information includes the RI, then the second part does not include the eighth indication information or the eighth indication information included in the second part indicates that the first identifier is not associated with the i-th channel state information, and the eleventh indication information included in the second part is used to indicate the RI corresponding to the i-th channel state information. In other words, the receiver of the first information obtains the RI corresponding to the i-th channel state information through the eleventh indication information of the second part.

[0247] On the contrary, for the i-th channel state information in the K channel state information, if the seventh indication information included in the first part indicates that the i-th channel state information does not include the RI, then the second part includes the eighth indication information or the eighth indication information included in the second part indicates that the first identifier is associated with the i-th channel state information, and the second part does not include the eleventh indication information or the eleventh indication information included in the second part is used to indicate the RI corresponding to other channel state information. In other words, the receiver of the first information obtains the RI corresponding to the i-th channel state information through the identifier of the configuration unit indicated by the eighth indication information of the second part.

[0248] As another example, for the i-th channel state information of the K channel state information, if the seventh indication information contained in the first part indicates that the i-th channel state information contains PMI, the second part does not contain the eighth indication information or the first identifier indicated by the eighth indication information contained in the second part is not associated with the i-th channel state information, and the twelfth indication information contained in the second part is used to indicate the PMI corresponding to the i-th channel state information. In other words, the receiver of the first information obtains the PMI corresponding to the i-th channel state information through the twelfth indication information of the second part.

[0249] On the contrary, for the i-th channel state information of the K channel state information, if the seventh indication information contained in the first part indicates that the i-th channel state information does not contain PMI, the second part contains the eighth indication information or the first identifier indicated by the eighth indication information contained in the second part is associated with the i-th channel state information, and the twelfth indication information contained in the second part is not used to indicate the PMI corresponding to other channel state information. In other words, the receiver of the first information obtains the PMI corresponding to the i-th channel state information through the PMI corresponding to the identifier of the configuration unit indicated by the eighth indication information of the second part.

[0250] As another example, for the i-th channel state information of the K channel state information, if the seventh indication information contained in the first part indicates that the i-th channel state information contains RI and PMI, the second part does not contain the eighth indication information or the first identifier indicated by the eighth indication information contained in the second part is not associated with the i-th channel state information, the eleventh indication information contained in the second part is used to indicate the RI corresponding to the i-th channel state information, and the twelfth indication information contained in the second part is used to indicate the PMI corresponding to the i-th channel state information. In other words, the receiver of the first information obtains the RI corresponding to the i-th channel state information through the eleventh indication information of the second part, and the receiver of the first information obtains the PMI corresponding to the i-th channel state information through the twelfth indication information of the second part.

[0251] On the contrary, for the i-th channel state information of the K channel state information, if the first part contains the seventh indication information indicating that the i-th channel state information does not contain the RI and the PMI, then the second part contains the eighth indication information or the eighth indication information contained in the second part indicates that the first identifier associated with the i-th channel state information, the second part does not contain the eleventh indication information or the eleventh indication information contained in the second part is used to indicate the RI corresponding to the other channel state information, and the second part does not contain the twelfth indication information or the twelfth indication information contained in the second part is used to indicate the PMI corresponding to the other channel state information. In other words, the receiver of the first information obtains the RI and the PMI corresponding to the i-th channel state information through the identifier of the configuration unit indicated by the eighth indication information of the second part.

[0252] In the second implementation example, the value of i is 1 to K, and the i-th channel state information of the K channel state information includes at least one of the following:

[0253] The thirteenth indication information indicates whether the i-th channel state information includes at least one of the RI, the PMI, and the channel quality identifier CQI;

[0254] The fourteenth indication information indicates the second identifier of one of the K configuration units; wherein the i-th channel state information satisfies one or more of the following: the RI contained in the i-th channel state information is the same as the RI contained in the channel state information of the configuration unit corresponding to the second identifier, the PMI contained in the i-th channel state information is the same as the PMI contained in the channel state information of the configuration unit corresponding to the second identifier, and the CQI contained in the i-th channel state information is the same as the CQI contained in the channel state information of the configuration unit corresponding to the second identifier.

[0255] In the second implementation example, in the K channel state information indicated by the first information, any channel state information can include the thirteenth indication information and / or the fourteenth indication information to realize the indication of at least one of the RI, the PMI, and the CQI.

[0256] Optionally, the i-th channel state information includes the thirteenth indication information; wherein in the case that the thirteenth indication information indicates that the i-th channel state information does not include at least one of the RI, the PMI, and the CQI, the i-th channel state information includes the fourteenth indication information.

[0257] In a possible implementation of the second implementation example, the first information includes a third part and a fourth part;

[0258] The third part includes at least one of the following: the thirteenth indication information, and the fifteenth indication information;

[0259] The fourth part includes at least one of the fourteenth indication information, the sixteenth indication information, the seventeenth indication information or the eighteenth indication information.

[0260] The fifteenth indication information indicates resource indexes corresponding to the K channel state information, the sixteenth indication information indicates RIs respectively corresponding to the K channel state information, the seventeenth indication information indicates PMIs respectively corresponding to the K channel state information, and the eighteenth indication information indicates CQIs respectively corresponding to the K channel state information.

[0261] Specifically, based on the above scheme, any channel state information in the K channel state information indicated by the first information can include an RI, a PMI and a CQI, and correspondingly, the first information can indicate the RI, the PMI and the CQI contained in the any channel state information through the third part and the fourth part.

[0262] In a possible implementation of the implementation example two, the first information includes K thirteenth indication information, and the K thirteenth indication information respectively indicates whether the K channel state information includes at least one of an RI, a PMI and a CQI; and the K thirteenth indication information is respectively carried in K bits of a second bit map. Specifically, the first information can indicate the K channel state information, and the first information can realize the indication of the K thirteenth indication information through the K bits of the second bit map, so as to realize the indication of whether the K channel state information includes at least one of the RI, the PMI and the CQI.

[0263] Optionally, the K thirteenth indication information is respectively carried in K bits of a second bit map, which can be understood as that an i thirteenth indication information in the K thirteenth indication information is carried in an i bit in the K bits of the second bit map, or a value of the i bit in the K bits of the second bit map means information indicated by the i thirteenth indication information in the K thirteenth indication information.

[0264] Optionally, each thirteenth indication information can be carried in one or more bits. In other words, the second bit map can include K segments of bits, the K thirteenth indication information is respectively carried in the K segments of bits in the second bit map, and the length of each segment of bits can be greater than or equal to 1. In this way, more bits can be used to flexibly indicate whether the K channel state information includes at least one of the RI, the PMI and the CQI.

[0265] For example, the thirteenth indication information can be realized in multiple ways.

[0266] For example, the thirteenth indication information is 1 bit, and the value of the 1 bit is used to indicate whether the RI is included.

[0267] For another example, the thirteenth indication information is 1 bit, and a value of the thirteenth indication information is used to indicate whether the PMI is included.

[0268] For another example, the thirteenth indication information is 1 bit, and a value of the thirteenth indication information is used to indicate whether the CQI is included.

[0269] For another example, the thirteenth indication information is 1 bit, and a value of the thirteenth indication information is used to indicate whether any two of the RI, the PMI and the CQI are included.

[0270] For another example, the thirteenth indication information is 1 bit, and a value of the thirteenth indication information is used to indicate whether the RI, the PMI and the CQI are included.

[0271] For another example, the thirteenth indication information is 3 bits, and a value of the thirteenth indication information is used to indicate any one of the following: only the RI is included, only the PMI is included, only the CQI is included, the RI and the PMI are included, the RI and the CQI are included, the CQI and the PMI are included, and the CQI, the RI and the PMI are included.

[0272] For another example, the thirteenth indication information corresponding to a plurality of channel state information is indicated by a bit map. For example, each bit (or each group of bits) corresponds to one channel state information, and is used to indicate whether at least one of the RI, the PMI and the CQI is included in the corresponding channel state information.

[0273] It should be understood that, in the implementation example two, the thirteenth indication information contained in the third part has a correlation relationship with the fourteenth indication information contained in the fourth part.

[0274] As an example, for the i-th channel state information in the K channel state information, if the thirteenth indication information contained in the third part indicates that the i-th channel state information contains the RI, then the fourth part does not contain the fourteenth indication information, or the second identifier indicated by the fourteenth indication information contained in the fourth part is not associated with the i-th channel state information, and the sixteenth indication information contained in the fourth part is used to indicate the RI corresponding to the i-th channel state information. In other words, the receiver of the first information obtains the RI corresponding to the i-th channel state information through the sixteenth indication information of the fourth part.

[0275] Conversely, for the i-th channel state information of the K channel state information, if the thirteenth indication information contained in the third part indicates that the i-th channel state information does not contain RI, the fourth part contains the fourteenth indication information or the second identifier indicated by the fourteenth indication information contained in the fourth part is associated with the i-th channel state information, and the fourth part does not contain the sixteenth indication information or the sixteenth indication information contained in the fourth part is used to indicate the RI corresponding to the other channel state information. In other words, the receiver of the first information obtains the RI corresponding to the i-th channel state information through the identifier of the configuration unit indicated by the fourteenth indication information of the fourth part.

[0276] As another example, for the i-th channel state information of the K channel state information, if the thirteenth indication information contained in the third part indicates that the i-th channel state information contains PMI, the fourth part does not contain the fourteenth indication information or the second identifier indicated by the fourteenth indication information contained in the fourth part is not associated with the i-th channel state information, and the seventeenth indication information contained in the fourth part is used to indicate the PMI corresponding to the i-th channel state information. In other words, the receiver of the first information obtains the PMI corresponding to the i-th channel state information through the seventeenth indication information of the fourth part.

[0277] Conversely, for the i-th channel state information of the K channel state information, if the thirteenth indication information contained in the third part indicates that the i-th channel state information does not contain PMI, the fourth part contains the fourteenth indication information or the second identifier indicated by the fourteenth indication information contained in the fourth part is associated with the i-th channel state information, and the fourth part does not contain the seventeenth indication information or the seventeenth indication information contained in the fourth part is used to indicate the PMI corresponding to the other channel state information. In other words, the receiver of the first information obtains the PMI corresponding to the i-th channel state information through the PMI corresponding to the identifier of the configuration unit indicated by the fourteenth indication information of the fourth part.

[0278] As another example, for the i-th channel state information of the K channel state information, if the thirteenth indication information contained in the third part indicates that the i-th channel state information contains CQI, the fourth part does not contain the fourteenth indication information or the second identifier indicated by the fourteenth indication information contained in the fourth part is not associated with the i-th channel state information, and the eighteenth indication information contained in the fourth part is used to indicate the CQI corresponding to the i-th channel state information. In other words, the receiver of the first information obtains the CQI corresponding to the i-th channel state information through the eighteenth indication information of the fourth part.

[0279] On the contrary, for the i-th channel state information of the K channel state information, if the thirteenth indication information contained in the third part indicates that the i-th channel state information does not contain PMI, the fourth part contains the fourteenth indication information or the second identifier indicated by the fourteenth indication information contained in the fourth part is associated with the i-th channel state information, and the fourth part does not contain the eighteenth indication information or the eighteenth indication information contained in the fourth part is used to indicate the CQI corresponding to other channel state information. In other words, the receiver of the first information obtains the CQI corresponding to the i-th channel state information through the CQI corresponding to the identifier of the configuration unit indicated by the fourteenth indication information of the fourth part.

[0280] As another example, for the i-th channel state information of the K channel state information, if the thirteenth indication information contained in the third part indicates that the i-th channel state information contains RI and PMI, the fourth part does not contain the fourteenth indication information or the second identifier indicated by the fourteenth indication information contained in the fourth part is not associated with the i-th channel state information, the sixteenth indication information contained in the fourth part is used to indicate the RI corresponding to the i-th channel state information, and the seventeenth indication information contained in the fourth part is used to indicate the PMI corresponding to the i-th channel state information. In other words, the receiver of the first information obtains the RI corresponding to the i-th channel state information through the sixteenth indication information of the fourth part, and the receiver of the first information obtains the PMI corresponding to the i-th channel state information through the seventeenth indication information of the fourth part.

[0281] On the contrary, for the i-th channel state information of the K channel state information, if the thirteenth indication information contained in the third part indicates that the i-th channel state information does not contain RI and PMI, the fourth part contains the fourteenth indication information or the second identifier indicated by the fourteenth indication information contained in the fourth part is associated with the i-th channel state information, the fourth part does not contain the sixteenth indication information or the sixteenth indication information contained in the fourth part is used to indicate the RI corresponding to other channel state information, and the fourth part does not contain the seventeenth indication information or the seventeenth indication information contained in the fourth part is used to indicate the PMI corresponding to other channel state information. In other words, the receiver of the first information obtains the RI and PMI corresponding to the i-th channel state information through the RI and PMI corresponding to the identifier of the configuration unit indicated by the fourteenth indication information of the fourth part.

[0282] As another example, for the i-th channel state information of the K channel state information, if the thirteenth indication information contained in the third part indicates that the i-th channel state information contains RI and CQI, the fourth part does not contain the fourteenth indication information or the second identifier indicated by the fourteenth indication information contained in the fourth part is not associated with the i-th channel state information, the sixteenth indication information contained in the fourth part is used to indicate the RI corresponding to the i-th channel state information, and the eighteenth indication information contained in the fourth part is used to indicate the CQI corresponding to the i-th channel state information. In other words, the receiver of the first information obtains the RI corresponding to the i-th channel state information through the sixteenth indication information of the fourth part, and obtains the CQI corresponding to the i-th channel state information through the eighteenth indication information of the fourth part.

[0283] On the contrary, for the i-th channel state information of the K channel state information, if the thirteenth indication information contained in the third part indicates that the i-th channel state information does not contain RI and CQI, the fourth part contains the fourteenth indication information or the second identifier indicated by the fourteenth indication information contained in the fourth part is associated with the i-th channel state information, the fourth part does not contain the sixteenth indication information or the sixteenth indication information contained in the fourth part is used to indicate the RI corresponding to other channel state information, and the fourth part does not contain the eighteenth indication information or the eighteenth indication information contained in the fourth part is used to indicate the CQI corresponding to other channel state information. In other words, the receiver of the first information obtains the RI and CQI corresponding to the i-th channel state information through the identifier of the configuration unit indicated by the fourteenth indication information of the fourth part.

[0284] As another example, for the i-th channel state information of the K channel state information, if the thirteenth indication information contained in the third part indicates that the i-th channel state information contains PMI and CQI, the fourth part does not contain the fourteenth indication information or the second identifier indicated by the fourteenth indication information contained in the fourth part is not associated with the i-th channel state information, the seventeenth indication information contained in the fourth part is used to indicate the PMI corresponding to the i-th channel state information, and the eighteenth indication information contained in the fourth part is used to indicate the CQI corresponding to the i-th channel state information. In other words, the receiver of the first information obtains the PMI corresponding to the i-th channel state information through the seventeenth indication information of the fourth part, and obtains the CQI corresponding to the i-th channel state information through the eighteenth indication information of the fourth part.

[0285] On the contrary, for the i-th channel state information of the K channel state information, if the thirteenth indication information contained in the third part indicates that the i-th channel state information does not contain PMI and CQI, the fourteenth indication information is contained in the fourth part or the second identifier indicated by the fourteenth indication information contained in the fourth part is associated with the i-th channel state information, the seventeenth indication information is not contained in the fourth part or the seventeenth indication information contained in the fourth part is used to indicate the PMI corresponding to the other channel state information, and the eighteenth indication information is not contained in the fourth part or the eighteenth indication information contained in the fourth part is used to indicate the CQI corresponding to the other channel state information. In other words, the receiver of the first information obtains the PMI and CQI corresponding to the i-th channel state information through the identifier of the configuration unit indicated by the fourteenth indication information in the fourth part.

[0286] As another example, for the i-th channel state information of the K channel state information, if the thirteenth indication information contained in the third part indicates that the i-th channel state information contains RI, PMI and CQI, the fourteenth indication information is not contained in the fourth part or the second identifier indicated by the fourteenth indication information contained in the fourth part is not associated with the i-th channel state information, the sixteenth indication information contained in the fourth part is used to indicate the RI corresponding to the i-th channel state information, the seventeenth indication information contained in the fourth part is used to indicate the PMI corresponding to the i-th channel state information, and the eighteenth indication information contained in the fourth part is used to indicate the CQI corresponding to the i-th channel state information. In other words, the receiver of the first information obtains the RI corresponding to the i-th channel state information through the sixteenth indication information in the fourth part, the receiver of the first information obtains the PMI corresponding to the i-th channel state information through the seventeenth indication information in the fourth part, and the receiver of the first information obtains the CQI corresponding to the i-th channel state information through the eighteenth indication information in the fourth part.

[0287] Conversely, for the i-th channel state information of the K channel state information, if the thirteenth indication information contained in the third part indicates that the i-th channel state information does not contain the RI, PMI and CQI, then the fourteenth indication information contained in the fourth part or the second identifier indicated by the fourteenth indication information contained in the fourth part is associated with the i-th channel state information, the fourth part does not contain the sixteenth indication information or the sixteenth indication information contained in the fourth part is used to indicate the RI corresponding to the other channel state information, the fourth part does not contain the seventeenth indication information or the seventeenth indication information contained in the fourth part is used to indicate the PMI corresponding to the other channel state information, and the fourth part does not contain the eighteenth indication information or the eighteenth indication information contained in the fourth part is used to indicate the CQI corresponding to the other channel state information. In other words, the receiver of the first information obtains the RI, PMI and CQI corresponding to the i-th channel state information through the identifier of the configuration unit indicated by the fourteenth indication information of the fourth part.

[0288] It should be noted that in the above implementation example one or implementation example two, the i-th channel state information of the K channel state information further includes the resource index corresponding to the i-th channel state information. Specifically, the first information can indicate the K channel state information, and correspondingly, any channel state information can further include the resource index corresponding to the any channel state information, so that the receiver of the first information can determine the resources corresponding to the K channel state information.

[0289] Optionally, the resource index corresponding to the i-th channel state information is a common index; or, in the K channel state information, the resource indexes corresponding to different channel state information are the same. Specifically, in the K channel state information, because different channel state information respectively corresponds to different configuration units contained in the first measurement configuration information, the different configuration units can be associated with the resources configured by the first measurement configuration information, and correspondingly, the channel state information obtained based on the channel measurement of the configuration units can be corresponding to the same resource index, so as to reduce the complexity of resource configuration.

[0290] For example, taking the first communication device as a terminal device and the second communication device as a network device as an example, the first information sent by the terminal device is exemplarily described in combination with the above implementation example one. The terminal device reports the CSI information of the channel through the first information. The CSI information can include K groups of CSI information corresponding to K bandwidth shrinkage configuration information. The CSI information can also include CSI information without any bandwidth shrinkage. Specifically, the CSI information can include one or more of the following:

[0291] 1. Index of channel measurement resource. When multiple channel measurement resources are configured, it can be used to identify a channel measurement resource.

[0292] 2. CQI information. K CQI information can be included, corresponding to K bandwidth shrinkage configuration information. One CQI information without any bandwidth shrinkage can also be included.

[0293] 3. RI information. K RI information can be included, corresponding to K bandwidth shrinkage configuration information. One RI information without any bandwidth shrinkage can also be included.

[0294] 4. PMI information. K PMI information can be included, corresponding to K bandwidth shrinkage configuration information. One PMI information without any bandwidth shrinkage can also be included.

[0295] There can be multiple bandwidth shrinkage configuration information corresponding to the same RI / PMI information, in which case K groups of RI / PMI information do not need to be reported. In order to save the reporting resource overhead, the following reporting format can be used.

[0296] For example, an indication information A is included in the CSI information, which is used to indicate which bandwidth shrinkage configuration information corresponds to the CSI information including RI / PMI, and which bandwidth shrinkage configuration information corresponds to the CSI information not including RI / PMI. The indication information can be a bit map, each bit corresponding to a bandwidth shrinkage configuration information, used to indicate whether the CSI information corresponding to the bandwidth shrinkage configuration information includes RI / PMI. If the CSI information corresponding to a bandwidth shrinkage configuration information does not include RI / PMI, its RI / PMI is the same as that of another bandwidth shrinkage configuration information. Specifically, which bandwidth shrinkage configuration information the RI / PMI is the same as can be indicated by a bandwidth shrinkage configuration information identifier.

[0297] In addition, the CSI information corresponding to K bandwidth shrinkage configuration information. If the CSI information corresponding to a bandwidth shrinkage configuration information includes RI / PMI information, the CSI information corresponding to the bandwidth shrinkage configuration information can include one or more of the following: the identifier of the bandwidth shrinkage configuration information, CQI, RI, PMI. If the CSI information corresponding to a bandwidth shrinkage configuration information does not include RI / PMI information, the CSI information corresponding to the bandwidth shrinkage configuration information can include one or more of the following: the identifier of the bandwidth shrinkage configuration information, CQI. The CSI information corresponding to K bandwidth shrinkage configuration information can be arranged in the order of the configuration of the CSI information corresponding to the K bandwidth shrinkage configuration information.

[0298] Optionally, the terminal device can divide the entire measurement reporting information into two parts, the first part and the second part respectively carrying the following information.

[0299] The first part at least includes: an index of a channel measurement resource, CQI information corresponding to K bandwidth shrinkage configuration information, and indication information A.

[0300] The second part at least includes: CSI information corresponding to the K bandwidth shrinkage configuration information. The CSI information corresponding to each bandwidth shrinkage configuration information can or can not include RI / PMI, which can be determined through the indication information A.

[0301] Optionally, the CQI information corresponding to the K bandwidth shrinkage configuration information in the first part can also be placed in the CSI information corresponding to the K bandwidth shrinkage configuration information in the second part.

[0302] Referring to FIG. 4, an embodiment of the present application provides a communication apparatus 400, which can implement the functions of the terminal device (or network device) in the above-mentioned method embodiments, and thus can also achieve the beneficial effects possessed by the above-mentioned method embodiments. In the embodiment of the present application, the communication apparatus 400 can be a terminal device (or network device), or an integrated circuit or element inside the terminal device (or network device), such as a chip, a baseband chip, a modem chip, a SoC chip containing a modem core, a system in package (SIP) chip, a communication module, a chip system, a processor, etc., or a circuit or chip responsible for communication functions in the terminal device (or network device).

[0303] It should be noted that the communication apparatus 400 can include modules or units for implementing the above-mentioned method embodiments. In a possible design, the transceiver unit 402 can include a sending unit and a receiving unit, which are respectively used for performing sending and receiving. Optionally, the communication apparatus 400 can further include a storage unit for storing device program code and / or data.

[0304] In a possible implementation, when the apparatus 400 is used to perform the method performed by the terminal device in FIG. 3 and related embodiments, the apparatus 400 includes a processing unit 401 and a transceiver unit 402; the transceiver unit 402 is configured to receive first measurement configuration information, the first measurement configuration information including K configuration units, each configuration unit being used to configure the terminal device to perform channel measurement based on a measurement bandwidth, and K being a positive integer; the processing unit 401 performs channel measurement according to the K configuration units, and determines K channel state information; and the transceiver unit 402 is further configured to send first information, the first information being used to indicate the K channel state information.

[0305] In a possible implementation, when the apparatus 400 is configured to perform the method performed by the network device in FIG. 3 and related embodiments, the apparatus 400 includes a processing unit 401 and a transceiver unit 402. The processing unit 401 is configured to determine first measurement configuration information. The transceiver unit 402 is configured to send the first measurement configuration information, where the first measurement configuration information includes K configuration units, each of which is configured to configure a terminal device to perform channel measurement based on a measurement bandwidth, and K is a positive integer. The transceiver unit 402 is further configured to receive first information, where the first information is used to indicate K channel state information, and the K channel state information is obtained based on the K configuration units, respectively.

[0306] In a possible design, when the communication apparatus 400 is a terminal device or a communication module in a terminal, the function of the processing unit 401 can be implemented by one or more processors. Specifically, the processor can include a modem chip, or a SoC chip or a SIP chip including a modem core. The function of the transceiver unit 402 can be implemented by a transceiver circuit.

[0307] In a possible design, when the communication apparatus 400 is a circuit or a chip responsible for communication functions in a terminal, such as a modem chip or a SoC chip or a SIP chip including a modem core, the function of the processing unit 401 can be implemented by a circuit system including one or more processors or processor cores in the chip. The function of the transceiver unit 402 can be implemented by an interface circuit or a data transceiver circuit on the chip.

[0308] It should be noted that the information processing process and the like of the units of the communication apparatus 400 are described in the foregoing method embodiments of the present application, and will not be described here.

[0309] Please refer to FIG. 5, which is another schematic structural diagram of a communication apparatus 500 provided by the present application. The communication apparatus 500 includes a logic circuit 501 and an input-output interface 502. The communication apparatus 500 can be a chip or an integrated circuit.

[0310] The transceiver unit 402 shown in FIG. 4 can be a communication interface, which can be the input-output interface 502 in FIG. 5. The input-output interface 502 can include an input interface and an output interface. Alternatively, the communication interface can be a transceiver circuit, which can include an input interface circuit and an output interface circuit.

[0311] In a possible implementation, when the apparatus 500 is configured to perform the method performed by the terminal device in FIG. 3 and related embodiments, the input and output interface 502 is configured to receive first measurement configuration information, the first measurement configuration information including K configuration units, each of which is configured to configure the terminal device to perform channel measurement based on a measurement bandwidth, K being a positive integer; the logic circuit 501 is configured to perform channel measurement according to the K configuration units, and determine K channel state information; and the input and output interface 502 is further configured to send first information, the first information being configured to indicate the K channel state information.

[0312] In a possible implementation, when the apparatus 500 is configured to perform the method performed by the network device in FIG. 3 and related embodiments, the logic circuit 501 is configured to determine first information; the logic circuit 501 is configured to determine first measurement configuration information; the input and output interface 502 is configured to send the first measurement configuration information, the first measurement configuration information including K configuration units, each of which is configured to configure the terminal device to perform channel measurement based on a measurement bandwidth, K being a positive integer; and the input and output interface 502 is further configured to receive first information, the first information being configured to indicate K channel state information; wherein the K channel state information is obtained based on channel measurement performed according to the K configuration units, respectively.

[0313] The logic circuit 501 and the input and output interface 502 can also perform other steps performed by the terminal device or the network device in any of the embodiments and achieve corresponding beneficial effects, which will not be repeated here.

[0314] In a possible implementation, the processing unit 401 shown in FIG. 4 can be the logic circuit 501 in FIG. 5.

[0315] Optionally, the logic circuit 501 can be a processing apparatus, and the functions of the processing apparatus can be partially or entirely implemented through software.

[0316] Optionally, the processing apparatus can include a memory and a processor, wherein the memory is configured to store a computer program, and the processor is configured to read and execute the computer program stored in the memory to perform corresponding processing and / or steps in any of the method embodiments.

[0317] Optionally, the processing apparatus can include only the processor. The memory for storing the computer program is located outside the processing apparatus, and the processor is connected with the memory through a circuit / wire to read and execute the computer program stored in the memory. The memory and the processor can be integrated together or can be physically independent of each other.

[0318] Optionally, the processing device can be one or more chips, or one or more integrated circuits. For example, the processing device can be one or more field-programmable gate arrays (FPGA), application specific integrated circuits (ASIC), system on chips (SoC), central processing units (CPU), network processors (NP), digital signal processors (DSP), micro controller units (MCU), programmable logic devices (PLD) or other integrated chips, or any combination of the above chips or processors, etc.

[0319] Referring to FIG. 6, a communication device 600 involved in the above embodiments provided by the embodiments of the present application is specifically a communication device as a terminal device in the above embodiments.

[0320] Optionally, the communication device 600 can further include a storage unit for storing device program codes and / or data.

[0321] Optionally, the communication device 600 can further include a storage unit for storing device program codes and / or data.

[0322] Further optionally, the device can further include at least one of a memory 603, a bus 604, and in the embodiments of the present application, the at least one processor 601 is configured to control and process the actions of the communication device 600.

[0323] Further, the processor 601 can be a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array, or other programmable logic device, transistor logic, hardware components, or any combination thereof. It can implement or execute various example logical blocks, modules, and circuits described in connection with the disclosure. The processor can also be a combination of computing functionality, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, or the like. For the sake of brevity and conciseness, the specific processes performed by the system, apparatus, and units described above can be referred to the corresponding processes in the method embodiments described above, and will not be described here again.

[0324] It should be noted that the communication apparatus 600 shown in FIG. 6 can be specifically used to implement the steps implemented by the terminal device in the foregoing method embodiments, and achieve the corresponding technical effects of the terminal device. The specific implementation of the communication apparatus shown in FIG. 6 can be referred to the description in the foregoing method embodiments, and will not be described here again.

[0325] Please refer to FIG. 7, which is a structural schematic diagram of a communication apparatus 700 involved in the foregoing embodiments provided by the embodiments of the present application. The communication apparatus 700 can be specifically the communication apparatus as the network device in the foregoing embodiments.

[0326] The communication apparatus 700 includes at least one processor 711 and at least one network interface 714. Further optionally, the communication apparatus further includes at least one memory 712, at least one transceiver 713, and one or more antennas 714. The processor 711, the memory 712, the transceiver 713, and the network interface 714 are connected, for example, through a bus. In the embodiments of the present application, the connection can include various interfaces, transmission lines, or buses, etc., and the embodiments of the present application do not limit the same. The antenna 715 is connected to the transceiver 713. The network interface 714 is used to enable the communication apparatus to communicate with other communication devices through a communication link. For example, the network interface 714 can include the network interface between the communication apparatus and the core network device, such as the S1 interface. The network interface can include the network interface between the communication apparatus and other communication apparatuses (such as other network devices or core network devices), such as the X2 or Xn interface.

[0327] The transceiver unit 402 shown in FIG. 4 can be a communication interface, which can be the network interface 714 in FIG. 7. The network interface 714 can include an input interface and an output interface. Alternatively, the network interface 714 can be a transceiver circuit, which can include an input interface circuit and an output interface circuit.

[0328] The processor 711 is mainly used for processing communication protocols and communication data, controlling the whole communication device, executing software programs, processing data of the software programs, for example, for supporting the communication device to perform the actions described in the embodiments. The communication device can include a baseband processor mainly used for processing communication protocols and communication data, and a central processor mainly used for controlling the whole terminal device, executing software programs, and processing data of the software programs. The processor 711 in FIG. 7 can integrate the functions of the baseband processor and the central processor, and those skilled in the art can understand that the baseband processor and the central processor can also be independent processors interconnected by a bus or the like. Those skilled in the art can understand that the terminal device can include multiple baseband processors to adapt to different network modes, and the terminal device can include multiple central processors to enhance the processing capability, and various components of the terminal device can be connected by various buses. The baseband processor can also be referred to as a baseband processing circuit or a baseband processing chip. The central processor can also be referred to as a central processing circuit or a central processing chip. The function of processing communication protocols and communication data can be built into the processor, or stored in the memory in the form of a software program, and the processor executes the software program to realize the baseband processing function.

[0329] The memory is mainly used for storing software programs and data. The memory 712 can exist independently and be connected with the processor 711. Alternatively, the memory 712 can be integrated with the processor 711, for example, integrated in a chip. The memory 712 can store program codes for executing the technical solutions of the embodiments of the present application, and the processor 711 controls the execution. Various computer programs executed can also be regarded as a driver of the processor 711.

[0330] FIG. 7 only shows one memory and one processor. In an actual terminal device, there can be multiple processors and multiple memories. The memory can also be referred to as a storage medium or a storage device, etc. The memory can be a storage element on the same chip as the processor, that is, an on-chip storage element, or an independent storage element, and the embodiments of the present application do not limit this.

[0331] The transceiver 713 can be configured to support the receiving or transmitting of radio frequency signals between the communication device and a terminal. The transceiver 713 can be connected to the antenna 715. The transceiver 713 includes a transmitter Tx and a receiver Rx. Specifically, the one or more antennas 715 can receive radio frequency signals, the receiver Rx of the transceiver 713 is configured to receive the radio frequency signals from the antenna and convert the radio frequency signals into digital baseband signals or digital intermediate frequency signals, and provide the digital baseband signals or digital intermediate frequency signals to the processor 711 for further processing, such as demodulation processing and decoding processing, by the processor 711. In addition, the transmitter Tx in the transceiver 713 is also configured to receive modulated digital baseband signals or digital intermediate frequency signals from the processor 711, and convert the modulated digital baseband signals or digital intermediate frequency signals into radio frequency signals, and transmit the radio frequency signals through the one or more antennas 715. Specifically, the receiver Rx can selectively perform one or more levels of down-mixing processing and analog-to-digital conversion processing on the radio frequency signals to obtain the digital baseband signals or digital intermediate frequency signals, and the order of the down-mixing processing and the analog-to-digital conversion processing can be adjustable. The transmitter Tx can selectively perform one or more levels of up-mixing processing and digital-to-analog conversion processing on the modulated digital baseband signals or digital intermediate frequency signals to obtain the radio frequency signals, and the order of the up-mixing processing and the digital-to-analog conversion processing can be adjustable. The digital baseband signals and the digital intermediate frequency signals can be collectively referred to as digital signals.

[0332] The transceiver 713 can also be referred to as a transceiving unit, a transceiver, a transceiving device, etc. Optionally, the devices in the transceiving unit for implementing the receiving function can be regarded as a receiving unit, and the devices in the transceiving unit for implementing the transmitting function can be regarded as a transmitting unit, i.e., the transceiving unit includes the receiving unit and the transmitting unit, the receiving unit can also be referred to as a receiver, an input port, a receiving circuit, etc., and the transmitting unit can be referred to as a transmitter, a transmitter, or a transmitting circuit, etc.

[0333] It should be noted that the communication device 700 shown in FIG. 7 can be specifically configured to implement the steps implemented by the network device in the foregoing method embodiments, and achieve the corresponding technical effects of the network device. The specific implementation mode of the communication device 700 shown in FIG. 7 can be referred to the description in the foregoing method embodiments, which will not be described here one by one.

[0334] Please refer to FIG. 8, which is a structural schematic diagram of a communication device involved in the above embodiments provided by the embodiments of the present application.

[0335] It can be understood that the communication apparatus 800 includes, for example, modules, units, elements, circuits, or interfaces, and the like, which are properly configured together to perform the technical solutions provided in the present application. The communication apparatus 800 can be a terminal device or a network device described above, or can be a component (for example, a chip) of the devices, to implement the methods described in the following method embodiments. The communication apparatus 800 includes one or more processors 801. The processor 801 can be a general processor or a special-purpose processor, and the like. For example, it can be a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control the communication apparatus (such as a RAN node, a terminal, or a chip, and the like), execute software programs, and process data of the software programs.

[0336] Optionally, in one design, the processor 801 can include a program 803 (which can also be referred to as code or instructions at times) that can be run on the processor 801, so that the communication apparatus 800 performs the methods described in the following embodiments. In yet another possible design, the communication apparatus 800 includes a circuit (not shown in FIG. 8).

[0337] Optionally, the communication apparatus 800 can include one or more memories 802 having a program 804 (which can also be referred to as code or instructions at times) stored thereon, which can be run on the processor 801, so that the communication apparatus 800 performs the methods described in the above method embodiments.

[0338] Optionally, the processor 801 and / or the memory 802 can include an artificial intelligence (AI) module 807, 808, which is used to implement AI-related functions. The AI module can be implemented in software, hardware, or a combination of software and hardware. For example, the AI module can include a radio intelligence control (RIC) module. For example, the AI module can be a near-real-time RIC or a non-real-time RIC.

[0339] Optionally, the processor 801 and / or the memory 802 can also store data. The processor and the memory can be separately arranged or integrated together.

[0340] Optionally, the communication apparatus 800 can also include a transceiver 805 and / or an antenna 806. The processor 801 can also be referred to as a processing unit, which controls the communication apparatus (such as a RAN node or a terminal). The transceiver 805 can also be referred to as a transceiving unit, a transceiver, a transceiving circuit, or a transceiver, and the like, which is used to realize the transceiving function of the communication apparatus through the antenna 806.

[0341] The processing unit 401 shown in FIG. 4 can be the processor 801. The transceiving unit 402 shown in FIG. 4 can be a communication interface, which can be a transceiver 805 in FIG. 8, which can include an input interface and an output interface. Alternatively, the transceiver 805 can also be a transceiving circuit, which can include an input interface circuit and an output interface circuit.

[0342] The embodiments of the present application further provide a computer readable storage medium for storing one or more computer-executable instructions, which, when executed by a processor, cause the processor to perform the method described in the possible implementation manners of the terminal device or the network device.

[0343] The embodiments of the present application further provide a computer program product (or computer program), which, when executed by a processor, causes the processor to perform the method of the possible implementation manners of the terminal device or the network device.

[0344] The embodiments of the present application further provide a chip system, which includes at least one processor for supporting a communication apparatus to implement the functions involved in the possible implementation manners of the communication apparatus. Optionally, the chip system further includes an interface circuit for providing program instructions and / or data for the at least one processor. In a possible design, the chip system can further include a memory for storing necessary program instructions and data of the communication apparatus. The chip system can be composed of a chip, or can include a chip and other discrete devices, and the communication apparatus can be the terminal device or the network device in the foregoing method embodiments.

[0345] The embodiments of the present application further provide a communication system, which includes the terminal device and the network device in any of the foregoing embodiments.

[0346] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other manners. For example, the described device embodiments are merely schematic. For example, the division of the units is only a logical function division. There can be another division manner for the actual implementation, for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections between different units, can be indirect couplings or communication connections through some interfaces, devices or units, and can be in electrical, mechanical or other forms.

[0347] The units described as separated components can or can not be physically separated, and the components displayed as units can or can not be physical units, i.e., can be located in one place, or can be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purposes of the embodiments of the present application.

[0348] In addition, each functional unit in the embodiments of the present application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit. The integrated unit can be implemented in the form of hardware or in the form of a software functional unit. If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on such an understanding, the technical solutions of the present application essentially or substantially, or all or part of the technical solutions, can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the embodiments of the present application. The foregoing storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk, and various other media that can store program codes.

Claims

1. A communication method characterized by comprising: The method comprises: receiving first measurement configuration information, the first measurement configuration information comprising K configuration units, each configuration unit being used for configuring the terminal device to perform channel measurement based on a measurement bandwidth, K being a positive integer; performing channel measurement according to the K configuration units, and determining K channel state information; sending first information, the first information being used for indicating the K channel state information.

2. The method of claim 1, wherein, The performing channel measurement according to the K configuration units and determining K channel state information comprises: for any configuration unit of the K configuration units, determining a measurement bandwidth corresponding to the any configuration unit according to configuration information in the any configuration unit, and determining channel state information corresponding to the any configuration unit according to the measurement bandwidth; or for any configuration unit of the K configuration units, determining a transmission power corresponding to the any configuration unit according to configuration information in the any configuration unit, and determining channel state information corresponding to the any configuration unit according to the transmission power.

3. The method according to claim 1 or 2, characterized in that, The method further comprises: sending second information, the second information being used for indicating at least one of the following capability information: whether to support receiving based on a contracted bandwidth, whether to support transmitting based on a contracted bandwidth, a maximum multiple of supported bandwidth contraction, or whether to support measuring channel state information of multiple contracted bandwidths.

4. A communication method characterized by comprising: The method comprises: sending first measurement configuration information, the first measurement configuration information comprising K configuration units, each configuration unit being used for configuring the terminal device to perform channel measurement based on a measurement bandwidth, K being a positive integer; receiving first information, the first information being used for indicating K channel state information; wherein the K channel state information are respectively obtained based on channel measurement of the K configuration units.

5. The method of claim 4, wherein, The K channel state information are respectively obtained based on channel measurement of the K configuration units, comprising: for any channel state information of the K channel state information, configuration information in a configuration unit corresponding to the any channel state information is used for determining a measurement bandwidth, the measurement bandwidth being used for determining the any channel state information; or for any channel state information of the K channel state information, configuration information in a configuration unit corresponding to the any channel state information is used for determining a transmission power, the transmission power being used for determining the any channel state information.

6. The method according to claim 4 or 5, characterized in that, The method further comprises: receiving second information, the second information being used for indicating at least one of the following capability information: whether to support receiving based on a contracted bandwidth, whether to support transmitting based on a contracted bandwidth, a maximum multiple of supported bandwidth contraction, or whether to support measuring channel state information of multiple contracted bandwidths.

7. The method according to any one of claims 1 to 6, characterized in that, Any configuration unit of the K configuration units comprises at least one of the following: first indication information, indicating an identity or index of the any configuration unit; second indication information, indicating a starting frequency domain position corresponding to the any configuration unit; third indication information, indicating a terminal frequency domain position corresponding to the any configuration unit; fourth indication information, indicating a quantity of frequency domain resources corresponding to the any configuration unit; The fifth indication information indicates a bandwidth scaling coefficient, and the bandwidth scaling coefficient is used to indicate a ratio of a measurement bandwidth corresponding to the any configuration unit to a first bandwidth, the first bandwidth being a bandwidth of a cell corresponding to the first measurement configuration information, or the first bandwidth being a bandwidth corresponding to a currently activated bandwidth part (BWP) in the cell corresponding to the first measurement configuration information. The sixth indication information indicates a power scaling coefficient, and the power scaling coefficient is used to indicate a ratio of a first power to a second power, the first power being a transmission power assumed by the terminal device when performing measurement based on the measurement bandwidth corresponding to the any configuration unit, or the second power being a transmission power assumed by the terminal device when performing measurement based on the first bandwidth, or the second power being a transmission power configured by the network device for the terminal device.

8. The method according to any one of claims 1 to 7, characterized in that, The i-th channel state information of the K channel state informations includes at least one of: The seventh indication information indicates whether the i-th channel state information includes at least one of a rank indication (RI) and a precoding matrix indication (PMI), i being 1 to K; The eighth indication information indicates a first identifier of one of the K configuration units; wherein the RI included in the i-th channel state information is the same as the RI included in the channel state information of the configuration unit corresponding to the first identifier, and / or the PMI included in the i-th channel state information is the same as the PMI included in the channel state information of the configuration unit corresponding to the first identifier.

9. The method of claim 8, wherein, The i-th channel state information includes the seventh indication information; When the seventh indication information indicates that the i-th channel state information does not include at least one of the RI and the PMI, the i-th channel state information includes the eighth indication information.

10. The method according to claim 8 or 9, characterized in that, The first information includes a first part and a second part; The first part includes at least one of the seventh indication information, a ninth indication information, or a tenth indication information; The second part includes at least one of the eighth indication information, an eleventh indication information, or a twelfth indication information; The ninth indication information indicates resource indexes corresponding to the K channel state informations, the tenth indication information indicates CQIs corresponding to the K channel state informations respectively, the eleventh indication information indicates RIs corresponding to the K channel state informations respectively, and the twelfth indication information indicates PMIs corresponding to the K channel state informations respectively.

11. The method according to any one of claims 8 to 10, characterized in that, The first information includes K seventh indication informations, and the K seventh indication informations respectively indicate whether the K channel state informations include at least one of an RI and a PMI; The K seventh indication informations are respectively carried in K bits of a first bit map.

12. The method according to any one of claims 1 to 7, characterized in that, The i-th channel state information of the K channel state informations includes at least one of: The thirteenth indication information indicates whether the i-th channel state information includes at least one of an RI, a PMI, and a channel quality indication (CQI), i being 1 to K; The fourteenth indication information indicates a second identifier of one of the K configuration units; wherein the ith channel state information satisfies one or more of the following: the RI included in the ith channel state information is the same as the RI included in the channel state information of the configuration unit corresponding to the second identifier, the PMI included in the ith channel state information is the same as the PMI included in the channel state information of the configuration unit corresponding to the second identifier, and the CQI included in the ith channel state information is the same as the CQI included in the channel state information of the configuration unit corresponding to the second identifier.

13. The method of claim 12, wherein, The ith channel state information includes the thirteenth indication information. In a case where the thirteenth indication information indicates that the ith channel state information does not include at least one of the RI, the PMI, and the CQI, the ith channel state information includes the fourteenth indication information.

14. The method according to claim 12 or 13, characterized in that, The first information includes a third part and a fourth part. The third part includes at least one of the thirteenth indication information or a fifteenth indication information. The fourth part includes at least one of the fourteenth indication information, a sixteenth indication information, a seventeenth indication information, or an eighteenth indication information. The fifteenth indication information indicates resource indexes corresponding to the K channel state information, the sixteenth indication information indicates RIs respectively corresponding to the K channel state information, the seventeenth indication information indicates PMIs respectively corresponding to the K channel state information, and the eighteenth indication information indicates CQIs respectively corresponding to the K channel state information.

15. The method according to any one of claims 12 to 14, characterized in that, The first information includes K thirteenth indication information, and the K thirteenth indication information respectively indicates whether the K channel state information includes at least one of the RI, the PMI, and the CQI. The K thirteenth indication information is respectively carried in K bits of a second bit map.

16. The method according to any one of claims 8 to 15, characterized in that, The ith channel state information of the K channel state information further includes a resource index corresponding to the ith channel state information.

17. The method of claim 16, wherein, The resource index corresponding to the ith channel state information is a common index; or In the K channel state information, resource indexes corresponding to different channel state information are the same.

18. A communications device, characterized by A module for performing the method of any one of claims 1 to 17.

19. A communications device, characterized by At least one processor coupled to a memory, wherein the at least one processor is configured to perform the method of any one of claims 1 to 17.

20. The communication apparatus according to claim 19, wherein, The communication device is a chip or a chip system.

21. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a computer program or instructions, which, when executed by a communication device, implement the method of any one of claims 1 to 17.

22. A computer program product, characterised in that, A computer program or instructions, which, when executed by a computer, implement the method of any one of claims 1 to 17. A computer program or instructions, which, when executed by a computer, implement the method of any one of claims 1 to 17.

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