Communication method and device

Abstract

A communication method and apparatus can reduce pilot overhead of a system, reduce power consumption of a terminal or an RAN node caused by pilot measurement, and facilitate energy saving of the terminal or the RAN node. The method comprises the following steps: a terminal or an RAN node acquires first information, and performs communication according to the first information. Wherein the first information comprises information of at least one geographic area and wireless environment map parameters of the at least one geographic area, and the wireless environment map parameters comprise wireless channel parameters and / or wireless transmission parameters associated with the wireless channel parameters. The first information further comprises at least one of the following items: a working frequency band of the wireless environment map parameter, an indication of whether the wireless environment map parameter is valid or not and a type of the wireless environment map parameter, and the type of the wireless environment map parameter is used for indicating whether the wireless environment map parameter is a true value or not.

Description

Technical Field

[0001] Embodiments of the present application relate to the field of communications, and in particular, to communication methods and devices. Background Art

[0002] In a mobile communication network, an association is established between the transmission of wireless signals and the surrounding physical environment through a radio channel. Specifically, after wireless electromagnetic waves are emitted from a transmitter, they reach the receiver through the reflection, diffraction, and scattering of various objects on the propagation path. The transmitter and the receiver can measure the channel characteristics based on pilot signals and select appropriate transmission parameters and reception parameters based on the measurement results of the channel characteristics.

[0003] However, with the increase in channel bandwidth, antenna arrays, and transmission channels in the sixth-generation (6G) wireless network, when obtaining wireless channel characteristics by measuring pilot signals, the transceiver needs to perform frequent measurements, resulting in an increase in device power consumption. Summary of the Invention

[0004] The present application provides a communication method and device, which can reduce device power consumption and is beneficial to terminal energy saving.

[0005] In a first aspect, a communication method is provided. This method can be executed by a terminal, or by a component of the terminal, such as a processor, a chip, or a chip system of the terminal, or can also be implemented by a logic module or software that can implement all or part of the terminal functions. The method includes: obtaining first information and performing communication according to the first information. The first information includes information on at least one geographical area and wireless environment map parameters of at least one geographical area. The wireless environment map parameters include wireless channel parameters and / or wireless transmission parameters associated with the wireless channel parameters. The first information further includes at least one of the following: the operating frequency band of the wireless environment map parameters, an indication of whether the wireless environment map parameters are valid, the type of the wireless environment map parameters, and the type of the wireless environment map parameters is used to indicate whether the wireless environment map parameters are true values.

[0006] Based on this solution, the terminal can pre-acquire the radio channel parameters and / or radio transmission parameters of at least one geographical area. Subsequently, when communicating in a certain geographical area, it can directly look up the radio channel parameters and / or radio transmission parameters of this geographical area pre-acquired, and thus communicate according to these parameters. Compared with the traditional method of completely acquiring radio channel parameters and radio transmission parameters based on pilot measurement, it can reduce the pilot overhead of the system, reduce the power consumption of the terminal caused by pilot measurement, and is beneficial to the energy saving of the terminal. In addition, in the case where the radio transmission parameters of the geographical area are pre-acquired, the RAN node does not need to decide the radio transmission parameters, nor does it need to indicate the radio transmission parameters to the terminal through signaling, thereby being able to simplify the processing complexity of the RAN node and further reduce the signaling overhead.

[0007] In a possible design, obtaining the first information includes: sending the second information, where the second information is used to request the radio environment map parameters of at least one geographical area; receiving the first information.

[0008] Based on this possible design, the terminal can send the second information to the RAN node to request the radio environment map parameters of at least one geographical area. Compared with the terminal determining the radio environment map parameters of at least one geographical area by itself, it can reduce the processing complexity of the terminal.

[0009] In a possible design, the second information includes at least one of the following: the location information of the terminal, the information used to indicate the first range, the identifiers of at least one geographical area, and the at least one geographical area is the geographical area within the first range.

[0010] In a possible design, the second information further includes at least one of the following: the operating frequency band of the requested radio environment map parameters, the requested radio channel parameters, and the requested radio transmission parameters.

[0011] In a possible design, the at least one geographical area includes at least one first geographical area, and the method further includes: sending the third information, where the third information is used to request to update the radio environment map parameters of at least one first geographical area; receiving the fourth information, where the fourth information is used to indicate permission to update the radio environment map parameters of some or all of the at least one first geographical area; sending the updated radio environment map parameters of some or all of the at least one first geographical area.

[0012] Based on this possible design, the terminal can request to update the radio environment map parameters, and in the case where the RAN node permits the update, send the updated radio environment map parameters to the RAN node, which can make the radio environment map parameters closer to the true value, thereby improving the communication performance when using the radio environment map parameters to assist communication.

[0013] In a possible design, the third information includes at least one of the following: the location information of the terminal, the information for indicating the second range, the identifier of at least one first geographical area, the working frequency band of the wireless environment map parameters requested to be updated, the wireless channel parameters requested to be updated, and the wireless transmission parameters requested to be updated. The at least one first geographical area is a geographical area within the second range.

[0014] In a possible design, the fourth information is used to indicate that the wireless environment map parameters of some or all of the at least one first geographical area are allowed to be updated, including: the fourth information is used to indicate a first resource, and the first resource is used to carry the updated wireless environment map parameters of some or all of the at least one first geographical area.

[0015] In a possible design, the at least one geographical area includes at least one second geographical area, and the method further includes: sending the measured downlink channel parameter measurement values in the at least one second geographical area, and / or the uplink wireless transmission parameters used in the at least one second geographical area.

[0016] Based on this possible design, the terminal sends the measured downlink channel parameter measurement values and / or the used uplink wireless transmission parameters, so that the RAN node can update the wireless environment map parameters based on the measured channel parameter measurement values and / or the used wireless transmission parameters, thereby making the predicted wireless environment map parameters closer to the true values, and further improving the communication performance when using the wireless environment map parameters to assist communication.

[0017] In a possible design, sending the measured downlink channel parameter measurement values in the at least one second geographical area, and / or the uplink wireless transmission parameters used in the at least one second geographical area, includes: receiving first configuration information, where the first configuration information is used to configure the terminal to report the measured downlink channel parameter measurement values and / or the used uplink wireless transmission parameters; and according to the first configuration information, sending the measured downlink channel parameter measurement values in the at least one second geographical area, and / or the uplink wireless transmission parameters used in the at least one second geographical area.

[0018] In a possible design, the first configuration information is used to configure the terminal to report downlink channel parameter measurement quantities and / or the uplink radio transmission parameters used, including: the first configuration information is used to configure at least one of the following: downlink reference signal resources, reported downlink channel measurement quantities, a first time unit, reported uplink radio transmission parameters, working frequency bands of the reported downlink channel parameters and / or uplink radio transmission parameters, frequency domain granularity of the reported downlink channel parameters and / or uplink radio transmission parameters, reporting modes, whether compressed reporting is supported, compression modes, and a second resource. Among them, the downlink reference signal resources are used by the terminal for downlink channel measurement; the first time unit is used to indicate the uplink radio transmission parameter values used when uplink transmission is performed in the first time unit; the reporting modes include periodic reporting, aperiodic reporting, or semi-persistent scheduling reporting; the second resource is used to carry the downlink channel parameter measurement quantities and / or the uplink radio transmission parameters used.

[0019] In a possible design, at least one geographical area includes at least one third geographical area, and the method further includes: sending fifth information, where the fifth information is used to feedback the credibility of the radio channel parameters and / or radio transmission parameters of at least one third geographical area.

[0020] Based on this possible design, the terminal can timely evaluate and feedback the credibility of the radio environment map parameters to the RAN node, enabling the RAN node to perform relevant processing based on the credibility, such as triggering the correction or update of low-credibility parameters, or deleting low-credibility parameters, or continuing to maintain high-credibility parameters, etc., ensuring that subsequent communications can use high-credibility or near-true-value radio environment map parameters, thereby improving communication performance.

[0021] In a possible design, the fifth information is used to feedback the credibility of the radio channel parameters of each first path in the third geographical area, and the radio environment map parameters used by the terminal include the radio channel parameters of each first path. And / or, the fifth information is used to feedback the credibility of the radio channel parameters of each first frequency domain sub-band in the third geographical area, and the radio environment map parameters used by the terminal include the radio channel parameters of each first frequency domain sub-band.

[0022] Based on this possible design, it is possible to feedback the credibility of the radio channel parameters of the paths or frequency domain sub-bands used by the terminal in terms of path granularity or frequency domain sub-band granularity. Compared with feedbacking the credibility of the radio channel parameters of all paths or all frequency domain sub-bands, the feedback overhead can be reduced.

[0023] In a possible design, the fifth information is used to feedback the credibility of the radio channel parameters of each first path in the third geographical area. The method further includes: sending sixth information, where the sixth information is used to feedback the credibility of each first radio channel parameter of each first path, and the radio environment map parameters used by the terminal include each first radio channel parameter of each first path.

[0024] Based on this possible design, it is possible to feedback the credibility of the radio channel parameters used by the terminal with the radio channel parameters as the granularity, which can improve the feedback fineness, so that the RAN node can more accurately correct the radio channel parameters and improve the accuracy of the radio channel parameters.

[0025] In a possible design, the fifth information is used to feedback the credibility of each first radio transmission parameter in the third geographical area, and the radio transmission parameters used by the terminal include each first radio transmission parameter.

[0026] Based on this possible design, it is possible to feedback the credibility of the radio transmission parameters used by the terminal with the radio transmission parameters as the granularity, which can improve the feedback fineness, so that the RAN node can more accurately correct the radio transmission parameters and improve the accuracy of the radio transmission parameters.

[0027] In a possible design, at least one geographical area includes at least one fourth geographical area. The method further includes: receiving seventh information, where the seventh information is used to indicate that the radio environment map parameters of at least one fourth geographical area are invalid.

[0028] Based on this possible design, the RAN node can indicate to the terminal that the radio environment map is invalid, avoiding the terminal communicating according to an invalid or low-credibility radio environment map, resulting in a reduction in communication performance.

[0029] In a possible design, the method further includes: determining that when communicating in at least one fourth geographical area, first perform channel measurement, and then communicate according to the channel measurement result.

[0030] Based on this possible design, in the case where the radio environment map parameters of the fourth geographical area are invalid, the terminal falls back to the traditional communication method. This improves the compatibility of the solution of this application with the traditional communication method.

[0031] Second aspect, a communication method is provided. This method can be executed by a RAN node, or by components of a RAN node, such as a processor, chip, or chip system of the RAN node, etc., and can also be implemented by a logic module or software that can implement all or part of the functions of the RAN node. The method includes: obtaining first information and performing communication according to the first information. Wherein, the first information includes information of at least one geographical area and radio environment map parameters of at least one geographical area, and the radio environment map parameters include radio channel parameters and / or radio transmission parameters associated with the radio channel parameters. The first information further includes at least one of the following: the operating frequency band of the radio environment map parameters, an indication of whether the radio environment map parameters are valid, the type of the radio environment map parameters, and the type of the radio environment map parameters is used to indicate whether the radio environment map parameters are true values. Wherein, the technical effects brought by the second aspect can refer to the technical effects brought by the first aspect above, and will not be elaborated here.

[0032] In a possible design, obtaining the first information includes: sending second information, where the second information is used to request radio environment map parameters of at least one geographical area; and receiving the first information.

[0033] In a possible design, the second information includes the identifier of the first cell managed by the RAN node, and the at least one geographical area includes the geographical area in the first cell.

[0034] In a possible design, the second information further includes at least one of the following: the operating frequency band of the requested radio environment map parameters, the requested radio channel parameters, and the requested radio transmission parameters.

[0035] In a possible design, the at least one geographical area includes at least one first geographical area, and the method further includes: receiving third information, where the third information is used to request an update of the radio environment map parameters of at least one first geographical area; sending fourth information, where the fourth information is used to indicate permission to update the radio environment map parameters of part or all of the at least one first geographical area; and receiving the updated radio environment map parameters of part or all of the at least one first geographical area.

[0036] In a possible design, the third information includes at least one of the following: the location information of the terminal, information used to indicate a second range, the identifier of at least one first geographical area, the operating frequency band of the requested updated radio environment map parameters, the requested updated radio channel parameters, and the requested updated radio transmission parameters. Wherein, the at least one first geographical area is the geographical area in the second range.

[0037] In a possible design, the fourth information is used to indicate that it is allowed to update the radio environment map parameters of some or all of the at least one first geographical area, including: the fourth information is used to indicate a first resource, and the first resource is used to carry the updated radio environment map parameters of some or all of the first geographical area.

[0038] In a possible design, the at least one geographical area includes at least one second geographical area, and the method further includes: receiving the measured values of the downlink channel parameters measured in the at least one second geographical area, and / or the uplink radio transmission parameters used in the at least one second geographical area.

[0039] In a possible design, the method further includes: sending first configuration information, where the first configuration information is used to configure the terminal to report the measured values of the downlink channel parameters and / or the uplink radio transmission parameters used.

[0040] In a possible design, the first configuration information is used to configure the terminal to report the measured values of the downlink channel parameters and / or the uplink radio transmission parameters used, including: the first configuration information is used to configure at least one of the following: downlink reference signal resources, the reported measured values of the downlink channel, a first time unit, the reported uplink radio transmission parameters, the working frequency band of the reported downlink channel parameters and / or uplink radio transmission parameters, the frequency domain granularity of the reported downlink channel parameters and / or uplink radio transmission parameters, the reporting method, whether compressed reporting is supported, the compression method, a second resource. Among them, the downlink reference signal resources are used for the terminal to perform downlink channel measurement; the first time unit is used to indicate the uplink radio transmission parameter values used when uplink transmission is performed in the first time unit; the reporting method includes periodic reporting, aperiodic reporting, or semi-persistent scheduling reporting; the second resource is used to carry the measured values of the downlink channel parameters and / or the uplink radio transmission parameters used.

[0041] In a possible design, the at least one geographical area includes at least one third geographical area, and the method further includes: receiving fifth information, where the fifth information is used to feedback the credibility of the radio channel parameters and / or radio transmission parameters of the at least one third geographical area.

[0042] In a possible design, the fifth information is used to feedback the credibility of the radio channel parameters of each first path in the third geographical area, and the radio environment map parameters used by the terminal include the radio channel parameters of each first path. And / or, the fifth information is used to feedback the credibility of the radio channel parameters of each first frequency domain sub-band in the third geographical area, and the radio environment map parameters used by the terminal include the radio channel parameters of each first frequency domain sub-band.

[0043] In a possible design, when the fifth information is used to feedback the reliability of the wireless channel parameters of each first path in the third geographical area, the method further includes: receiving sixth information, where the sixth information is used to feedback the reliability of each first wireless channel parameter of each first path, and the wireless environment map parameters used by the terminal include each first wireless channel parameter of each first path.

[0044] In a possible design, the fifth information is used to feedback the reliability of each first wireless transmission parameter in the third geographical area, and the wireless transmission parameters used by the terminal include each first wireless transmission parameter.

[0045] In a possible design, at least one geographical area includes at least one fourth geographical area, and the method further includes: receiving seventh information, where the seventh information is used to indicate that the wireless environment map parameters of at least one fourth geographical area are invalid.

[0046] Among them, the technical effects brought by any possible design of the second aspect can refer to the technical effects brought by the corresponding design in the first aspect, which will not be elaborated here.

[0047] Combined with the first aspect or the second aspect, in a possible design, the information of the geographical area includes at least one of the following: the identifier of the geographical area, the central position coordinates of the geographical area, and the spatial resolution of the geographical area.

[0048] Combined with the first aspect or the second aspect, in a possible design, the first information further includes the reliability of the wireless environment map parameters. Exemplarily, the reliability of the wireless environment map parameters is used to reflect (or characterize) the communication quality when communicating according to the wireless environment map parameters.

[0049] Combined with the first aspect or the second aspect, in a possible design, the wireless channel parameters include at least one of the following: channel multipath power, channel multipath delay, channel multipath horizontal arrival angle, channel multipath horizontal departure angle, channel multipath vertical arrival angle, channel multipath vertical departure angle, and frequency-domain channel response on at least one frequency-domain bandwidth.

[0050] Combined with the first aspect or the second aspect, in a possible design, the wireless transmission parameters include at least one of the following: modulation and coding scheme MCS, uplink transmit power, uplink timing advance TA, precoding matrix indicator PMI, beam indicator, and reference signal received power.

[0051] Combined with the first aspect or the second aspect, in a possible design, the type of the wireless environment map parameters includes true value or predicted value.

[0052] In a third aspect, a communication device is provided for implementing various methods. The communication device includes modules, units, or means corresponding to the implementation of the methods. Among them, the module, unit, or means can be implemented by hardware, software, or by hardware executing corresponding software. The hardware or software includes one or more modules or units corresponding to the functions.

[0053] In some possible designs, the communication device may include a processing module and a transceiver module. The processing module can be used to implement the processing functions in any of the above aspects and any possible implementation manners thereof. The transceiver module may include a receiving module and a transmitting module, which are respectively used to implement the receiving function and the transmitting function in any of the above aspects and any possible implementation manners thereof.

[0054] In some possible designs, the transceiver module may be composed of a transceiver circuit, a transceiver, a transceiver, or a communication interface.

[0055] In a possible design, when the communication device is used to implement the method described in the first aspect and any of its possible designs:

[0056] The processing module is used to obtain first information; the transceiver module is used to communicate according to the first information. Among them, the first information includes information of at least one geographical area and radio environment map parameters of at least one geographical area. The radio environment map parameters include radio channel parameters and / or radio transmission parameters associated with the radio channel parameters. The first information further includes at least one of the following: the operating frequency band of the radio environment map parameters, an indication of whether the radio environment map parameters are valid, the type of the radio environment map parameters, and the type of the radio environment map parameters is used to indicate whether the radio environment map parameters are true values.

[0057] Optionally, the processing module is used to obtain first information, including: the processing module is used to send second information through the transceiver module, and the second information is used to request radio environment map parameters of at least one geographical area; the processing module is further used to receive the first information through the transceiver module.

[0058] Optionally, the second information includes at least one of the following: the location information of the terminal, the information indicating the first range, the identifiers of at least one geographical area, and the at least one geographical area is the geographical area in the first range.

[0059] Optionally, the second information further includes at least one of the following: the operating frequency band of the requested radio environment map parameters, the requested radio channel parameters, and the requested radio transmission parameters.

[0060] Optionally, at least one geographical area includes at least one first geographical area, and the transceiver module is further configured to send third information for requesting an update of wireless environment map parameters of at least one first geographical area; the transceiver module is further configured to receive fourth information for indicating permission to update wireless environment map parameters of some or all of the at least one first geographical area; the transceiver module is further configured to send updated wireless environment map parameters of some or all of the at least one first geographical area.

[0061] Optionally, the third information includes at least one of the following: location information of the terminal, information for indicating a second range, an identifier of at least one first geographical area, an operating frequency band of the wireless environment map parameters for which an update is requested, wireless channel parameters for which an update is requested, and wireless transmission parameters for which an update is requested. The at least one first geographical area is a geographical area within the second range.

[0062] Optionally, the fourth information for indicating permission to update wireless environment map parameters of some or all of the at least one first geographical area includes: the fourth information is used to indicate a first resource for carrying the updated wireless environment map parameters of some or all of the at least one first geographical area.

[0063] Optionally, at least one geographical area includes at least one second geographical area, and the transceiver module is further configured to send measured values of downlink channel parameters measured in at least one second geographical area, and / or uplink wireless transmission parameters used in at least one second geographical area.

[0064] Optionally, the transceiver module is further configured to send measured values of downlink channel parameters measured in at least one second geographical area, and / or uplink wireless transmission parameters used in at least one second geographical area, including: the transceiver module is further configured to receive first configuration information for configuring the terminal to report measured values of downlink channel parameters and / or used uplink wireless transmission parameters; the transceiver module is further configured to send, according to the first configuration information, measured values of downlink channel parameters measured in at least one second geographical area, and / or uplink wireless transmission parameters used in at least one second geographical area.

[0065] Optionally, the first configuration information is used to configure the terminal to report downlink channel parameter measurement quantities and / or the uplink radio transmission parameters used, including: the first configuration information is used to configure at least one of the following: downlink reference signal resources, reported downlink channel measurement quantities, a first time unit, reported uplink radio transmission parameters, working frequency bands of reported downlink channel parameters and / or uplink radio transmission parameters, frequency domain granularity of reported downlink channel parameters and / or uplink radio transmission parameters, reporting modes, whether compressed reporting is supported, compression modes, and a second resource. Among them, the downlink reference signal resources are used by the terminal for downlink channel measurement; the first time unit is used to indicate the uplink radio transmission parameter values used when uplink transmission is performed in the first time unit; the reporting modes include periodic reporting, aperiodic reporting, or semi-persistent scheduling reporting; the second resource is used to carry downlink channel parameter measurement quantities and / or the uplink radio transmission parameters used.

[0066] Optionally, at least one geographical area includes at least one third geographical area, and the transceiver module is further configured to send fifth information, where the fifth information is used to feedback the credibility of the radio channel parameters and / or radio transmission parameters of at least one third geographical area.

[0067] Optionally, the fifth information is used to feedback the credibility of the radio channel parameters of each first path in the third geographical area, and the radio environment map parameters used by the terminal include the radio channel parameters of each first path. And / or, the fifth information is used to feedback the credibility of the radio channel parameters of each first frequency sub-band in the third geographical area, and the radio environment map parameters used by the terminal include the radio channel parameters of each first frequency sub-band.

[0068] Optionally, the fifth information is used to feedback the credibility of the radio channel parameters of each first path in the third geographical area, and the transceiver module is further configured to send sixth information, where the sixth information is used to feedback the credibility of each first radio channel parameter of each first path, and the radio environment map parameters used by the terminal include each first radio channel parameter of each first path.

[0069] Optionally, the fifth information is used to feedback the credibility of each first radio transmission parameter in the third geographical area, and the radio transmission parameters used by the terminal include each first radio transmission parameter.

[0070] Optionally, at least one geographical area includes at least one fourth geographical area, and the transceiver module is further configured to receive seventh information, where the seventh information is used to indicate that the radio environment map parameters of at least one fourth geographical area are invalid.

[0071] Optionally, the processing module is further configured to determine that when communicating in at least one fourth geographical area, channel measurement is first performed, and then communication is performed according to the channel measurement results.

[0072] In a possible design, when the communication device is used to implement the method described in the second aspect and any of its possible designs:

[0073] A processing module, configured to obtain first information, and a transceiver module, configured to communicate according to the first information. The first information includes information of at least one geographical area and radio environment map parameters of at least one geographical area, and the radio environment map parameters include radio channel parameters and / or radio transmission parameters associated with the radio channel parameters. The first information further includes at least one of the following: the operating frequency band of the radio environment map parameters, an indication of whether the radio environment map parameters are valid, and the type of the radio environment map parameters, where the type of the radio environment map parameters is used to indicate whether the radio environment map parameters are true values.

[0074] Optionally, the processing module, configured to obtain first information, includes: the processing module, configured to send second information through the transceiver module, where the second information is used to request radio environment map parameters of at least one geographical area; the processing module is further configured to receive the first information through the transceiver module.

[0075] Optionally, the second information includes an identifier of a first cell managed by an RAN node, and the at least one geographical area includes geographical areas in the first cell.

[0076] Optionally, the second information further includes at least one of the following: the operating frequency band of the requested radio environment map parameters, the requested radio channel parameters, and the requested radio transmission parameters.

[0077] Optionally, the at least one geographical area includes at least one first geographical area, and the transceiver module is further configured to receive third information, where the third information is used to request an update of the radio environment map parameters of at least one first geographical area; the transceiver module is further configured to send fourth information, where the fourth information is used to indicate permission to update the radio environment map parameters of some or all of the at least one first geographical area; the transceiver module is further configured to receive the updated radio environment map parameters of some or all of the at least one first geographical area.

[0078] Optionally, the third information includes at least one of the following: the location information of the terminal, information for indicating a second range, identifiers of at least one first geographical area, the operating frequency band of the requested updated radio environment map parameters, the requested updated radio channel parameters, and the requested updated radio transmission parameters. The at least one first geographical area is a geographical area in the second range.

[0079] Optionally, the fourth information for indicating permission to update the radio environment map parameters of some or all of the at least one first geographical area includes: the fourth information for indicating a first resource, where the first resource is used to carry the updated radio environment map parameters of some or all of the at least one first geographical area.

[0080] Optionally, at least one geographical area includes at least one second geographical area, and the transceiver module is further configured to receive the downlink channel parameter measurement values measured in at least one second geographical area, and / or the uplink radio transmission parameters used in at least one second geographical area.

[0081] Optionally, the transceiver module is further configured to send first configuration information for configuring the terminal to report the downlink channel parameter measurement values and / or the uplink radio transmission parameters used.

[0082] Optionally, the first configuration information for configuring the terminal to report the downlink channel parameter measurement values and / or the uplink radio transmission parameters used includes: the first configuration information is used to configure at least one of the following: downlink reference signal resources, reported downlink channel measurement values, a first time unit, reported uplink radio transmission parameters, working frequency bands of reported downlink channel parameters and / or uplink radio transmission parameters, frequency domain granularity of reported downlink channel parameters and / or uplink radio transmission parameters, reporting mode, whether compressed reporting is supported, compression mode, and a second resource. Among them, the downlink reference signal resources are used by the terminal for downlink channel measurement; the first time unit is used to indicate the uplink radio transmission parameter values used when uplink transmission is performed in the first time unit; the reporting mode includes periodic reporting, aperiodic reporting, or semi-persistent scheduling reporting; and the second resource is used to carry the downlink channel parameter measurement values and / or the uplink radio transmission parameters used.

[0083] Optionally, at least one geographical area includes at least one third geographical area, and the transceiver module is further configured to receive fifth information for feedbacking the credibility of the radio channel parameters and / or radio transmission parameters of at least one third geographical area.

[0084] Optionally, the fifth information is used to feedback the credibility of the radio channel parameters of each first path in the third geographical area, and the radio environment map parameters used by the terminal include the radio channel parameters of each first path. And / or, the fifth information is used to feedback the credibility of the radio channel parameters of each first frequency sub-band in the third geographical area, and the radio environment map parameters used by the terminal include the radio channel parameters of the first frequency sub-band.

[0085] Optionally, when the fifth information is used to feedback the credibility of the radio channel parameters of each first path in the third geographical area, the transceiver module is further configured to receive sixth information for feedbacking the credibility of each first radio channel parameter of each first path, and the radio environment map parameters used by the terminal include each first radio channel parameter of each first path.

[0086] Optionally, the fifth information is used to feedback the credibility of each first wireless transmission parameter in the third geographical area, and the wireless transmission parameters used by the terminal include each first wireless transmission parameter.

[0087] Optionally, at least one geographical area includes at least one fourth geographical area, and the transceiver module is further configured to receive seventh information, where the seventh information is used to indicate that the wireless environment map parameters of the at least one fourth geographical area are invalid.

[0088] Optionally, the information of the geographical area includes at least one of the following: the identifier of the geographical area, the central position coordinates of the geographical area, and the spatial resolution of the geographical area.

[0089] Optionally, the first information further includes the credibility of the wireless environment map parameters. Exemplarily, the credibility of the wireless environment map parameters is used to reflect (or characterize) the communication quality when communicating according to the wireless environment map parameters.

[0090] Optionally, the wireless channel parameters include at least one of the following: channel multipath power, channel multipath delay, channel multipath horizontal arrival angle, channel multipath horizontal departure angle, channel multipath vertical arrival angle, channel multipath vertical departure angle, and frequency domain channel response on at least one frequency domain bandwidth.

[0091] Optionally, the wireless transmission parameters include at least one of the following: modulation and coding scheme MCS, uplink transmit power, uplink timing advance TA, precoding matrix indicator PMI, beam indication, and reference signal received power.

[0092] Optionally, the type of the wireless environment map parameters includes true value or predicted value.

[0093] In a fourth aspect, a communication device is provided, including: a processor and a memory; the memory is used to store computer instructions, and when the processor executes the instructions, the communication device is enabled to execute the method described in any aspect.

[0094] In a fifth aspect, a communication device is provided, including: a processor and a communication interface; the communication interface is used to communicate with modules outside the communication device; the processor is used to execute computer programs or instructions, so that the communication device executes the method described in any aspect.

[0095] In a sixth aspect, a communication device is provided, including: at least one processor; the processor is used to execute computer programs or instructions stored in the memory, so that the communication device executes the method described in any aspect. The memory may be coupled to the processor or may be independent of the processor.

[0096] In a seventh aspect, a communication device is provided (for example, the communication device may be a chip or a chip system). The communication device includes a processor configured to implement the functions involved in any one of the first aspect or the second aspect.

[0097] In some possible designs, the communication device includes a memory configured to store necessary program instructions and data.

[0098] In some possible designs, when the device is a chip system, it may be composed of chips or may include chips and other discrete devices.

[0099] In one possible design, the communication device described in the third aspect to the seventh aspect may be the terminal in the first aspect, or a device included in the terminal, such as a chip or a chip system; or, the communication device may be the RAN node in the second aspect, or a device included in the RAN node, such as a chip or a chip system.

[0100] In an eighth aspect, a communication device is provided. The communication device may be a terminal, or a module or unit (for example, a chip, or a chip system, or a circuit) that corresponds one by one to the methods / operations / steps / actions described in the first aspect and is executed in the terminal, or a module or unit that can be used in matching with the terminal; or, the communication device may be a RAN node, or a module or unit (for example, a chip, or a chip system, or a circuit) that corresponds one by one to the methods / operations / steps / actions described in the second aspect and is executed in the RAN node, or a module or unit that can be used in matching with the RAN node.

[0101] It can be understood that when the communication device provided in any one of the third aspect to the eighth aspect is a chip, the transmission action / function of the communication device can be understood as outputting information, and the reception action / function of the communication device can be understood as inputting information.

[0102] In a ninth aspect, a computer-readable storage medium is provided. The computer-readable storage medium stores a computer program or instructions. When it runs on the communication device, the communication device can execute the methods described in any one of the first aspect or the second aspect.

[0103] In a tenth aspect, a computer program product containing instructions is provided. When it runs on the communication device, the communication device can execute the methods described in any one of the first aspect or the second aspect.

[0104] In an eleventh aspect, a communication system is provided. The communication system may include a terminal and a RAN node. The terminal is configured to implement the methods described in the first aspect and any one of its design manners, and the RAN node is configured to implement the methods described in the second aspect and any one of its design manners.

[0105] Among them, for the technical effects brought by any one of the third aspect to the eleventh aspect, reference can be made to the technical effects brought by different design methods in the first aspect or the second aspect, which will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0106] Figure 1 A schematic diagram of the terminal power consumption provided by this application;

[0107] Figure 2 A schematic diagram of the resource overhead of beam scanning provided by this application;

[0108] Figure 3 A schematic diagram of the structure of a communication system provided by this application;

[0109] Figure 4 A schematic diagram of the process of parameter determination provided by this application;

[0110] Figures 5 - 7 A schematic diagram of the process of the communication method provided by this application;

[0111] Figure 8 A schematic diagram of the update method of wireless environment map parameters provided by this application;

[0112] Figures 9 - 10 A schematic diagram of the process of the communication method provided by this application;

[0113] Figure 11 A schematic diagram of the structure of a communication device provided by this application;

[0114] Figure 12 A schematic diagram of the structure of another communication device provided by this application;

[0115] Figure 13 A schematic diagram of the structure of yet another communication device provided by this application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0116] In the description of this application, unless otherwise specified, " / " indicates that the objects associated before and after are in an "or" relationship. For example, A / B can represent A or B; the "and / or" in this application is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. Among them, A and B can be singular or plural.

[0117] In the description of the present application, unless otherwise specified, "a plurality" means two or more than two. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single item or plural items. For example, at least one of a, b, or c can represent: a, b, c, a - b, a - c, b - c, or a - b - c, where a, b, c can be single or plural.

[0118] In addition, for the convenience of clearly describing the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish the same items or similar items with basically the same functions and roles. Those skilled in the art can understand that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit being different.

[0119] In the embodiments of the present application, words such as "exemplary" or "for example" are used to represent examples, illustrations, or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or having more advantages than other embodiments or design solutions. Exactly speaking, using words such as "exemplary" or "for example" aims to present relevant concepts in a specific way for easy understanding.

[0120] It can be understood that "embodiments" mentioned throughout the specification mean that specific features, structures, or characteristics related to the embodiments are included in at least one embodiment of the present application. Therefore, the various embodiments throughout the specification do not necessarily refer to the same embodiments. In addition, these specific features, structures, or characteristics can be combined in one or more embodiments in any suitable manner. It can be understood that in the various embodiments of the present application, the magnitude of the serial numbers of the various processes does not mean the sequence of execution, and the execution sequence of each process should be determined according to its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

[0121] It can be understood that in the present application, both "when..." and "if" refer to corresponding processing under certain objective circumstances, which do not limit time, do not require a judgment action when implemented, and do not mean there are other limitations.

[0122] It can be understood that some optional features in the embodiments of the present application, in some scenarios, can be implemented independently without relying on other features, such as the current scheme they are based on, to solve the corresponding technical problems and achieve the corresponding effects. In some scenarios, they can also be combined with other features according to requirements. Correspondingly, the devices given in the embodiments of the present application can also implement these features or functions accordingly, which will not be elaborated here.

[0123] In this application, unless otherwise specified, the same or similar parts among various embodiments can be referred to each other. In each embodiment of this application, if there is no special specification and logical conflict, the terms and / or descriptions among different embodiments are consistent and can be cited mutually. The technical features in different embodiments can be combined to form new embodiments according to their internal logical relationships. The following described embodiments of this application do not constitute a limitation on the protection scope of this application.

[0124] In a traditional mobile communication network, before a transmitter and a receiver communicate, channel characteristics are usually measured based on a pilot channel, and appropriate transmission parameters and reception parameters are selected based on the measurement results. However, with the development of mobile communication networks, the channel bandwidth, antenna arrays, and transmission channels are constantly increasing. The traditional method of obtaining wireless channel characteristics by measuring pilot signals faces huge challenges:

[0125] Since the transceiver needs to frequently perform channel measurements to obtain channel information, the power consumption of the transceiver device increases. At the same time, due to the need for frequent measurements at the transceiver, the device cannot enter the deep sleep state to achieve energy saving. Exemplarily, the power consumption ratio of beam scanning measurement on the terminal side increases to more than 30%.

[0126] As Figure 1 shown, the power consumptions occupied by the physical downlink shared channel (PDSCH), physical downlink control channel (PDCCH)-only, sleep, wake up signal (WUS), synchronization signal and PBCH block (SSB), and CSI-RS on the terminal side are 2.75%, 13.80%, 52.45%, 0.50%, and 30.50% respectively.

[0127] In addition, due to the increase in bandwidth, the transmission overhead of pilot signals increases sharply, resulting in a reduction in resources for data transmission and deteriorating communication performance. Taking the beam scanning of millimeter waves as an example, with the increase in the scale of the base station array, as Figure 2 shown, the pilot overhead of the channel state information-reference signal (CSI-RS) required for analog beam scanning increases to more than 20% of the system resources.

[0128] See Figure 2, when the beam scanning period is 20 milliseconds (ms), the pilot overheads in the scenarios of 1024 arrays (256 beams), 2048 arrays (512 beams), and 4096 arrays (1024 beams) respectively occupy 7.14%, 14.29%, and 28.57% of the system resources. When the beam scanning period is 40 ms, the pilot overheads in the scenarios of 1024 arrays (256 beams), 2048 arrays (512 beams), and 4096 arrays (1024 beams) respectively occupy 3.57%, 7.14%, and 14.29% of the system resources.

[0129] Based on this, the present application provides a communication method. In this method, a terminal or a base station can pre-acquire the radio channel parameters and / or radio transmission parameters of at least one geographical area. Subsequently, when communicating in a certain geographical area, it can look up the radio channel parameters and / or radio transmission parameters of this geographical area, and thus communicate based on the radio channel parameters and / or of this geographical area. Exemplarily, the radio channel parameters and / or radio transmission parameters of the geographical area can be predicted based on the perceived and reconstructed physical environment information. Compared with the traditional method of completely obtaining the radio channel parameters and radio transmission parameters based on pilot measurement, it can save power consumption and system overhead.

[0130] The technical solution of the embodiments of the present application can be used in various communication systems. The communication system can be a third generation partnership project (3GPP) communication system, for example, a fourth generation (4G) system such as a long term evolution (LTE) system, a fifth generation (5G) system such as a new radio (NR) system, a system of hybrid networking of LTE and 5G, a non-terrestrial network (NTN), or other next-generation communication systems, such as a sixth generation (6G) communication system. The communication system can also be a non-3GPP communication system, without limitation.

[0131] Exemplarily, some nodes in the communication system can have communication functions and sensing functions, or the communication system can be an integrated sensing and communication (ISAC) system, also known as a communication and sensing integration system or a joint communications and sensing (JCS / JCAS) system.

[0132] Sensing, also known as wireless sensing, refers to emitting electromagnetic energy into space. By receiving the radio waves reflected by objects existing in the space, the information of the objects can be calculated. For example, parameters such as position, direction, height, speed, size, and movement path can be obtained, and the internal and external shapes and structures of the objects can be detected. By exploring the transmission, echo, reflection, and scattering of radio waves, the physical world can be sensed and better understood. As one of the electromagnetic wave sensing technologies, wireless sensing technology can be an important alternative technology for security inspections, detecting hidden objects, and environmental reconstruction due to its penetrability and security.

[0133] In the ISAC system, on the one hand, widely deployed communication nodes, such as wireless network nodes (base stations or terminals), can provide stronger sensing capabilities due to their wider working bandwidths, higher working frequencies, and larger antenna arrays, thus greatly improving the environmental sensing accuracy and feasibility of the wireless network. On the other hand, the sensing results of the wireless network nodes can be used to reconstruct the physical environment, and the reconstructed physical environment can be used to predict the electromagnetic wave transmission characteristics between the wireless network nodes, thereby assisting communication.

[0134] Among them, the above-mentioned communication systems applicable to this application are only examples, and the communication systems applicable to this application are not limited to this. The communication systems provided in this application do not impose any limitations on the solutions of this application. This is uniformly explained here and will not be elaborated further below.

[0135] Figure 3 Shows a possible and non-limiting system schematic diagram. As Figure 3 shown, the communication system 30 includes a radio access network (RAN) 300 and a core network (CN) 400. The RAN 300 includes at least one RAN node (such as Figure 3 310a and 310b in Figure 3 , collectively referred to as 310) and at least one terminal (such as Figure 3 320a - 320j in

[0136] The RAN 300 can be a 3GPP-related cellular system, for example, a 4G or 5G mobile communication system, or a future evolved system (such as a 6G mobile communication system). The RAN 300 can also be an open radio access network (O-RAN), a cloud radio access network (CRAN), or a wireless fidelity (WiFi) system. The RAN 300 can also be a communication system that integrates two or more of the above systems.

[0137] The RAN node 310, sometimes also referred to as an access network device, a RAN entity, or an access node, etc., forms part of a communication system and is used to help a terminal achieve wireless access. Multiple RAN nodes 310 in the communication system 30 can be of the same type or different types. In some scenarios, the roles of the RAN node 310 and the terminal 320 are relative. For example, Figure 3 The network element 320i can be a helicopter or a drone, which can be configured as a mobile base station. For the terminal 320j accessing the RAN 300 through the network element 320i, the network element 320i is a base station; but for the base station 310a, the network element 320i is a terminal. The RAN node 310 and the terminal 320 are sometimes both referred to as communication devices. For example, Figure 3 the network elements 310a and 310b in the network can be understood as communication devices with base station functions, and the network elements 320a - 320j can be understood as communication devices with terminal functions.

[0138] In a possible scenario, the RAN node can be a base station, an evolved NodeB (eNodeB), an access point (AP), a transmission reception point (TRP), a next generation NodeB (gNB), a next generation base station in a 6G mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system, etc. The RAN node can be a macro base station (such as Figure 3 310a in Figure 3310b) in the RAN node, relay node or donor node, or the radio controller in the CRAN scenario. Optionally, the RAN node may also be a server, wearable device, vehicle or in-vehicle device, etc. For example, the access network device in vehicle to everything (V2X) technology may be a road side unit (RSU). All or part of the functions of the RAN node in this application may also be implemented by software functions running on hardware, or by virtualized functions instantiated on a platform (such as a cloud platform). The RAN node in this application may also be a logical node, logical module or software that can implement all or part of the functions of the RAN node.

[0139] In another possible scenario, multiple RAN nodes cooperate to assist the terminal in achieving wireless access, and different RAN nodes respectively implement part of the functions of the base station. For example, the RAN node may be a central unit (CU), distributed unit (DU), CU-control plane (CP), CU-user plane (UP), or radio unit (RU), etc. The CU and DU may be set separately, or may also be included in the same network element, such as a baseband unit (BBU). The RU may be included in a radio frequency device or radio frequency unit, such as included in a remote radio unit (RRU), active antenna unit (AAU) or remote radio head (RRH).

[0140] In different systems, the CU (or CU-CP and CU-UP), DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, the CU may also be called O-CU (open CU), the DU may also be called O-DU, the CU-CP may also be called O-CU-CP, the CU-UP may also be called O-CU-UP, and the RU may also be called O-RU. For the convenience of description, the CU, CU-CP, CU-UP, DU and RU are used as examples in this application. Any one of the CU (or CU-CP, CU-UP), DU and RU in this application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0141] A terminal can also be referred to as a terminal device, user equipment (UE), mobile station, mobile terminal, etc. Terminals 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 healthcare, smart grid, smart furniture, smart office, smart wearables, smart transportation, smart city, etc. A terminal can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a wearable device, a vehicle, a drone, a helicopter, an airplane, a ship, a robot, a robotic arm, a smart home device, etc. The embodiments of this application do not limit the device form of the terminal.

[0142] It should be noted that the communication system described in the embodiments of this application is to more clearly illustrate the technical solutions of the embodiments of this application, and does not constitute a limitation on the technical solutions provided by the embodiments of this application. Those of ordinary skill in the art know that with the evolution of the network architecture and the emergence of new service scenarios, the technical solutions provided by the embodiments of this application are equally applicable to similar technical problems.

[0143] The following Figure 3 Taking the interaction between a terminal and a RAN node as an example in the shown communication system, the communication method provided by the embodiments of this application will be described. It should be noted that in the following embodiments of this application, the message names, the names of each parameter, or the names of each piece of information, etc. between the terminal and the RAN node are just examples, and in other embodiments, they can also be other names. The method provided by this application does not make specific limitations on this.

[0144] It can be understood that in the embodiments of this application, the terminal or the RAN node can execute some or all of the steps in the embodiments of this application. These steps or operations are only examples, and the embodiments of this application can also execute other operations or various deformations of the operations. In addition, each step can be executed in a different order presented by the embodiments of this application, and it is possible not to execute all the operations in the embodiments of this application.

[0145] It can be understood that in this application, the RAN node and the terminal are taken as examples of the execution entities of this interaction schematic, but this application does not limit the execution entities of the interaction schematic. For example, the method executed by the RAN node in this application can also be executed by a module applied to the RAN node (such as a chip, a chip system, or a processor), and can also be implemented by a logical node, a logical module, or software that can implement all or part of the functions of the RAN node; the method executed by the terminal in this application can also be executed by a module applied to the terminal (such as a chip, a chip system, or a processor), and can also be implemented by a logical node, a logical module, or software that can implement all or part of the functions of the terminal.

[0146] In addition, "sending information" in this application can be understood as a device sending information to another device, or, it can also be understood as a logical module inside the device sending information to another logical module. For example, "the terminal sends information" can be understood as the terminal sending information to another device (such as a RAN node), or, it can be understood as the logical module 1 (such as a processing module) in the terminal sending information to the logical module 2 (such as a transceiver module) in the terminal.

[0147] "Receiving information" in this application can be understood as a device receiving information from another device, or, it can also be understood as a logical module inside the device receiving information from another logical module. For example, "the terminal receives information" can be understood as the terminal receiving information from another device (such as a RAN node), or, it can be understood as the logical module 1 (such as a processing module) in the terminal receiving information from the logical module 2 (such as a transceiver module) in the terminal.

[0148] "Sending information to... (such as a RAN node)" or the relevant schematic in the drawings can be understood that the destination of this information is the RAN node. It can include directly or indirectly sending information to the RAN node. "Receiving information from... (such as a RAN node)" or "receiving information from... (such as a RAN node)" or "receiving the information sent by... (such as a RAN node)", or the relevant schematic in the drawings can be understood that the source of this information is the RAN node, and it can include directly or indirectly receiving information from the RAN node. Necessary processing may be performed on the information between the source and the destination of the information sending, such as format change, etc., but the destination can understand the valid information from the source. Similar expressions in this application can be understood similarly, and will not be elaborated here.

[0149] To facilitate the understanding of the technical solutions of the embodiments of this application, before introducing the communication method provided by this application, first, an introduction to the information set (or information group or other names) of the geographical area provided by this application is given.

[0150] In a possible implementation, a geographic region may refer to a three-dimensional spatial region, which may also be referred to as a spatial region, a three-dimensional region, a three-dimensional grid (3D grid), a grid, etc. The present application does not specifically limit the name of the geographic region. Additionally, the geographic region may also be a planar region, and the present application does not specifically limit this either.

[0151] As a possible implementation, a geographic region may have at least one of the following attributes: shape, contour, size, radius, area, geographical location, height, etc. The shapes, contours, sizes, radii, and areas of different geographic regions may be the same or different. The geographical locations of different geographic regions are different. There may or may not be an overlap between different geographic regions.

[0152] As a possible implementation, the contour of a geographic region and the points in the geographic region may be described by a three-dimensional coordinate system such as an earth-centered earth-fixed (ECEF) coordinate system, a geodetic coordinate system, or an earth-centered inertial (ECI) coordinate system.

[0153] As a possible implementation, the shape of a geographic region may be a regular hexagon, or other shapes such as a regular pentagon, a circle, an ellipse, etc. Alternatively, the shape of the geographic region may also be an irregular shape, without limitation.

[0154] As a possible implementation, multiple geographic regions may be divided on the earth and indexed (such as numbered). For example, the geographical location of a certain geographic region is determined by the identifier of the geographic region, that is, the geographical location of the geographic region can be obtained according to the identifier of the geographic region, or rather, there is an association relationship between the identifier of the geographic region and the geographical location of the geographic region. Exemplarily, multiple geographic regions may be discretized on the earth, each geographic region corresponds to an identifier, and the geographical location of the geographic region can be obtained according to the identifier of the geographic region.

[0155] Among them, the information set of the geographic region includes the information of the geographic region and the wireless environment map parameters. The wireless environment map parameters may also be referred to as wireless environment map information. Of course, the wireless environment map parameters may also have other names, and the present application does not limit this.

[0156] Among them, the information of the geographic region may also be referred to as the description information or indication information of the geographic region, and is used to indicate or identify the geographic region. The information of the geographic region may include at least one of the following: the identifier (ID) of the geographic region, the central position coordinates of the geographic region, or the spatial resolution of the geographic region.

[0157] Exemplarily, the identifier of a geographical area is used to uniquely identify the geographical area. The central position coordinates of the geographical area are coordinates in a three-dimensional coordinate system (such as the ECEF coordinate system, the geodetic coordinate system, or the ECI coordinate system), and can be expressed as (X, Y, Z). The spatial resolution of the geographical area can indicate the size or area of the geographical area. For example, it can be expressed as a*b*c. a can be the value on the x-axis of the three-dimensional coordinate system, representing the length of the geographical area in the x-axis direction; b can be the value on the y-axis of the three-dimensional coordinate system, representing the length of the geographical area in the y-axis direction; c can be the value on the z-axis of the three-dimensional coordinate system, representing the length of the geographical area in the z-axis direction. The unit of the spatial resolution can be metre (m), and of course, it can also be other length units, without limitation.

[0158] Among them, the radio environment map parameters of the geographical area include radio channel parameters and / or radio transmission parameters associated with the radio channel parameters.

[0159] As a possible implementation, the radio channel parameters of the geographical area can refer to: the channel parameters received in the geographical area after the signal emitted from the transmitter passes through the radio environment. The radio channel parameters can include the time-domain channel parameters of each path in the multipath channel and / or the frequency-domain channel parameters on at least one frequency-domain bandwidth. The frequency-domain bandwidth can be a frequency-domain sub-band, or it can also be a frequency-domain wideband, without limitation.

[0160] Exemplarily, the frequency-domain channel parameters can be the frequency-domain channel response or the frequency-domain channel coefficient. In the embodiments of the present application, the frequency-domain channel response or the frequency-domain channel coefficient can be represented in a complex form or a frequency-domain response function, involving amplitude and phase. The frequency-domain response function is usually denoted as H(f), for example where A(f) represents the amplitude, represents the phase. Alternatively, the frequency-domain channel response or the frequency-domain channel coefficient can be represented by a quantization value, such as represented by an eigenvector, a discrete Fourier transform (DFT) vector, etc.

[0161] The time-domain channel parameters can include at least one of the following: channel multipath power, channel multipath delay, channel multipath horizontal angle of arrival (AOA), channel multipath horizontal angle of departure (AOD), channel multipath vertical angle of arrival (ZOA), channel multipath vertical angle of departure (ZOD). Taking the multipath channel of a certain geographical area including L paths as an example, the radio channel parameters of the geographical area can be expressed as:

[0162] power1, delay1, AOA1, AOD1, ZOA1, ZOD1

[0163] power2, delay2, AOA2, AOD2, ZOA2, ZID2

[0164] ……

[0165] power L , delay L , AOA L , AOD L , ZOA L , ZOD L

[0166] The subscripts 1, 2, …, L represent the indices of the paths in the multipath channel.

[0167] Exemplarily, power, delay, AOA, AOD, ZOA, ZOD, and the frequency-domain channel response can be collectively referred to or form the complete set of wireless channel parameters.

[0168] As a possible implementation, the wireless transmission parameters of a geographical area can refer to the wireless transmission parameters required for communication within that geographical area. The wireless transmission references can include at least one of the following: modulation and coding scheme (MCS), uplink transmit power, uplink timing advance (TA), precoding matrix indicator (PMI), beam indicator, reference signal received power.

[0169] Exemplarily, MCS, uplink transmit power, uplink TA, PMI, beam indicator, and parameter signal received power can be collectively referred to or form the complete set of wireless transmission parameters.

[0170] Optionally, the information set of the geographical area further includes at least one of the following: the operating frequency band of the radio environment map parameters, an indication of whether the radio environment map parameters are valid, the type of the radio environment map parameters. Further, the information set of the geographical area can also include the credibility of the radio environment map parameters.

[0171] As a possible implementation, the operating frequency band of the radio environment map parameters can also be understood as the effective frequency band or application frequency band of the radio environment map parameters. For the same geographical area, the values of the radio environment map parameters may be different in different frequency bands.

[0172] As a possible implementation, whether the wireless environment map parameters are valid can be understood as whether the wireless environment map parameters are available or can be used for communication. Exemplarily, whether the wireless environment map parameters are valid can be represented by On or Off, where On can represent valid and Off represents invalid.

[0173] As a possible implementation, the type of the wireless environment map parameters is used to indicate whether the wireless environment map parameters are ground truth. Exemplarily, the type of the wireless environment map parameters can include ground truth or predicted values. Ground truth can refer to wireless channel parameters obtained through channel measurement and / or wireless transmission parameters actually used during communication.

[0174] As a possible implementation, the credibility of the wireless environment map parameters can be evaluated by the communication quality or communication performance when the terminal or RAN node uses the wireless environment map parameters for communication. Or rather, the credibility of the wireless environment map parameters is used to reflect or characterize the communication quality or communication performance when communicating according to the wireless environment map parameters.

[0175] Exemplarily, the credibility of the wireless environment map parameters can be represented by a credibility level. If the credibility level of the wireless environment map parameters in a certain geographical area is high, it means that the evaluation result of the RAN node or terminal on the wireless environment map parameters in this geographical area is high, that is, the communication quality or communication performance when using them for communication is good. Good communication performance can include a low bit error rate or a small number of retransmissions.

[0176] If the credibility level is low, it means that the evaluation result of the RAN node or terminal on the wireless environment map parameters in this geographical area is low, that is, the communication quality or communication performance when using them for communication is poor, or it means that the wireless environment map parameters are not used by the RAN node or terminal, or it means that the RAN node or terminal has a high evaluation of some parameters in the wireless environment map parameters and a low evaluation of some parameters.

[0177] In summary, the content and description of the information set of the geographical area can be as shown in Table 1 below:

[0178] Table 1

[0179]

[0180] In a possible implementation manner, the map corresponding to the physical environment can be understood as a physical environment map, and there are buildings, roads, objects, etc. in the physical environment map. There can also be multiple nodes in the physical environment, such as base stations, terminals, TRPs, etc. Each node can obtain physical environment information in the following two ways:

[0181] Method A: Obtain physical environment information through multi-modal perception and positioning technology. Exemplarily, the physical environment information may include information about objects in the physical environment, such as position, shape, material, etc.

[0182] Method B: Based on artificial intelligence (AI) or machine learning (ML), infer physical environment information, such as virtual TRP position, etc., through channel measurement results.

[0183] Furthermore, the physical environment or the physical environment map can be divided into multiple geographical regions. Determine the wireless channel parameters and / or wireless transmission parameters of the geographical region based on the physical environment information in the geographical region. Since the determined wireless channel parameters and / or wireless transmission parameters are for the geographical regions in the physical environment map, the wireless channel parameters and / or wireless transmission parameters can also be understood as wireless environment map parameters.

[0184] As a possible implementation, determining wireless channel parameters based on physical environment information may include: using AI or ML methods to infer new wireless channel parameters through training on a known dataset (including physical environment information and wireless channel parameters). In addition, the multi-path propagation characteristics of wireless signals in the physical environment can be predicted through the Ray-tracing modeling method to determine the wireless channel parameters.

[0185] For wireless transmission parameters, the wireless transmission parameters can be calculated by analyzing the wireless channel parameters; or, based on AL or ML methods, new wireless transmission parameters can be inferred through training on a known dataset (including wireless channel parameters and wireless transmission parameters).

[0186] Exemplarily, when the wireless channel parameters are determined based on wireless environment information and the wireless transmission parameters are determined based on the wireless channel parameters, as Figure 4 shown, it can be considered that the wireless channel parameters are predicted based on the physical environment information, and the wireless transmission parameters are predicted based on the wireless channel parameters.

[0187] Next, the communication method provided in the embodiments of the present application will be introduced. Refer to Figure 5 in (a), which is a schematic flowchart of a communication method provided in the embodiments of the present application. The communication method may include the following steps:

[0188] S501: The first communication device obtains first information. Exemplarily, the first communication device may be a terminal or a RAN node.

[0189] Among them, the first information includes information on at least one geographical area and radio environment map parameters of at least one geographical area. The radio environment map parameters of the geographical area can refer to the foregoing related descriptions and will not be elaborated here.

[0190] Furthermore, the first information further includes at least one of the following for each geographical area in at least one geographical area: the operating frequency band of the radio environment map parameters, an indication of whether the radio environment map parameters are valid, the type of the radio environment map parameters, and the credibility, which can refer to the foregoing related descriptions and will not be elaborated here.

[0191] S502. The first communication device communicates according to the first information.

[0192] Exemplarily, when the radio environment map parameters include radio channel parameters and do not include radio transmission parameters, the first communication device can determine the radio channel transmission parameters associated with the radio channel parameters based on the radio channel parameters of the geographical area where it is located, and then use the radio channel transmission parameters for uplink and downlink transmission. Or, when the radio environment map parameters include radio transmission parameters, the first communication device can directly use the radio transmission parameters of the geographical area where it is located for uplink and downlink transmission. At this time, the radio environment map parameters may or may not include radio channel parameters. In addition, the first communication device can select the valid radio environment map parameters corresponding to the frequency band based on the available frequency band of itself for communication.

[0193] In a possible implementation manner, as shown in (b) of Figure 5 in the above step S501, the first communication device obtaining the first information may include the following steps S5011 and S5012:

[0194] S5011. The first communication device sends second information to the second communication device. Correspondingly, the second communication device receives the second information from the first communication device.

[0195] Among them, the second information is used to request radio environment map parameters of at least one geographical area. Exemplarily, the second information can be used to request the initial download of radio environment map parameters of at least one geographical area, or can be used to request the updated download of radio environment map parameters of at least one geographical area.

[0196] Optionally, the second information being used to request radio environment map parameters of at least one geographical area can also be understood as: the second information is used to request some or all of the information in the information set of at least one geographical area. The information set of the geographical area can refer to the foregoing related descriptions and will not be elaborated here.

[0197] As a first possible implementation, when the first communication device is a RAN node, the second communication device may be a central node. The central node may be deployed in an access network or a core network without limitation.

[0198] In this first possible implementation, the second information may include an identifier of a first cell managed by the RAN node, where the first cell may refer to one or more cells. In this case, the at least one geographical area is a geographical area within the first cell. For example, after receiving the identifier of the first cell, the second communication device may obtain the coverage of the first cell based on the identifier of the first cell, thereby determining the geographical area within the coverage of the first cell as the at least one geographical area.

[0199] Furthermore, the second information may also include the requested working frequency band of the wireless environment map parameter, the requested wireless channel parameter, and the requested wireless transmission parameter.

[0200] Exemplarily, the requested wireless channel parameters / wireless transmission parameters can also be understood as the requested wireless channel parameter type / wireless transmission parameter type. The requested wireless channel parameters can be the full set of wireless channel parameters or a subset of the full set, and the requested wireless transmission parameters can be the full set of wireless transmission parameters or a subset of the full set.

[0201] In this first possible implementation, when the second communication device is deployed in a radio access network, the first communication device may send the second information to the second communication device via an Xn interface. When the second communication device is deployed in a core network, the first communication device may send the second information to the second communication device via a service-based interface between the first communication device and the second communication device.

[0202] In the first possible implementation, the central node may maintain information sets of multiple geographical areas. The information sets of the geographical areas maintained by the central node may be determined by the central node. The determination method may refer to the aforementioned related descriptions and will not be repeated here.

[0203] As a second possible implementation, when the first communication device is a terminal, the second communication device may be a RAN node. For example, the second communication device is the current serving RAN node of the terminal, or the second communication device is the RAN node currently providing service to the terminal.

[0204] In this second possible implementation, the second information may include at least one of the following: terminal location information, information indicating the first range, or an identifier of at least one geographical area. The terminal location information may refer to the terminal's current location information. Furthermore, the second information may also include the requested operating frequency band of the wireless environment map parameter, the requested wireless channel parameters, and the requested wireless transmission parameters. Please refer to the relevant description in the first possible implementation above.

[0205] When the second information includes the location information of the terminal, at least one geographical area includes the geographical area to which the location indicated by the location information of the terminal belongs.

[0206] When the second information includes information for indicating a first range, at least one geographical area is a geographical area within the first range. The geographical area within the first range may or may not include the geographical area where the terminal is currently located. For example, when the terminal can predict its movement path, the first range indicated by the terminal may include the geographical areas where the terminal may be located in the future.

[0207] Exemplarily, the information for indicating the first range may be a geographical radius. After receiving this information, the second communication device may determine the first range based on the geographical radius. For example, the first range is a circular area centered at a certain location (such as the location of the terminal) with the geographical radius as the radius.

[0208] When the second information includes the identifier of at least one geographical area, the second information may include the identifier of the geographical area where the terminal is currently located, or the identifier of the geographical area and the identifiers of its surrounding geographical areas; or, the second information may include the identifier of the geographical area where the terminal may be located in the future, or the identifier of the geographical area and the identifiers of its surrounding geographical areas.

[0209] In this second possible implementation, the second information may be carried in radio resource control (RRC) signaling, media access control (MAC) signaling, or physical layer signaling.

[0210] In this second possible implementation, the set of information on geographical areas maintained at the RAN node may be determined by the RAN node. The determination method may refer to the foregoing related description and will not be elaborated here; or, it may be requested by the RAN node from the central node, without limitation.

[0211] S5012. The second communication device sends the first information to the first communication device. Correspondingly, the first communication device receives the first information from the second communication device.

[0212] As a possible implementation, the second communication device may send, to the first communication device through the first information, the set of information on some or all of the geographical areas it requests. This set of information includes radio environment map parameters. Further, it may also include at least one of the working frequency band of the radio environment map parameters, an indication of whether the radio environment map parameters are valid, the type of the radio environment map parameters, and the reliability of the radio environment map parameters.

[0213] Exemplarily, taking the second information being used to request wireless environment map parameters for geographical area 1, geographical area 2, and geographical area 3 as an example, the second communication device may send a set of information of one or more geographical areas among geographical area 1, geographical area 2, and geographical area 3 to the first communication device.

[0214] In a possible implementation manner, when the first communication device is a terminal, after the terminal receives the first information, regarding the effective time of the first information:

[0215] As a possible implementation, the effective time of the content included in the first information may be indicated by the RAN node. Exemplarily, after sending the first information, the RAN node may send indication information, which is used to indicate the effective time of the first information. For example, the indication information includes a time offset, and the effective time of the first information is the time after this time offset; or the indication information is used to activate the first information, or to trigger the first information to become effective, that is, the first information becomes effective after receiving this indication information. Among them, this indication information may be carried in layer 1 or layer 2 signaling.

[0216] As another possible implementation, after the terminal receives the first information, the first information becomes effective immediately, that is, the effective time of the first information may be the time when the terminal receives the first information. Or, the effective time of the first information may be determined by the terminal itself.

[0217] In a possible implementation manner, before the second communication device sends the first information, it may also notify the first communication device whether it supports compression when sending the first information. If compression is supported, it may also send the compression method to the first communication device so that the first communication device can perform corresponding decompression.

[0218] Exemplarily, in a CU-DU architecture or an ORAN system, when the first communication device is a RAN node and the second communication device is a central node, the actions of the first communication device in the above steps S5011 and S5012 may be executed by the CU or O-CU; when the first communication device is a terminal and the second communication device is a RAN node, the actions of the second communication device in the above steps S5011 and S5012 may be executed by the DU or O-DU.

[0219] Based on the above solution, the terminal or RAN node can pre-acquire the wireless channel parameters and / or wireless transmission parameters of at least one geographical area. When subsequently communicating in a certain geographical area, the pre-acquired wireless channel parameters and / or wireless transmission parameters of the geographical area can be directly searched, and communication can be carried out based on the parameters. Compared with the traditional method of obtaining wireless channel parameters and wireless transmission parameters based entirely on pilot measurements, the system's pilot overhead can be reduced, and the power consumption of the terminal and RAN node caused by pilot measurements can be reduced, which is beneficial to energy saving for the terminal and RAN node. In addition, when the wireless transmission parameters of the geographical area are pre-acquired, the RAN node does not need to decide on the wireless transmission parameters, nor does it need to indicate the wireless transmission parameters to the terminal through signaling, thereby simplifying the processing complexity of the RAN node and further reducing the signaling overhead.

[0220] The present application also provides a communication method, in which after the terminal obtains the wireless environment map parameters of at least one geographical area, the wireless environment map parameters can be updated. Figure 6 As shown, the communication method may include the following steps:

[0221] S601: A terminal sends third information to a RAN node. Correspondingly, the RAN node receives the third information from the terminal.

[0222] The third information is used to request updating of wireless environment map parameters of at least one first geographical area. The first geographical area may be understood as a geographical area in the at least one geographical area for which wireless environment map parameters need to be updated.

[0223] As a possible implementation, the third information may include at least one of the following: location information of the terminal, information indicating the second range, an identifier of at least one first geographical area, an operating frequency band of the wireless environment map parameters requested to be updated, wireless channel parameters requested to be updated, and wireless transmission parameters requested to be updated.

[0224] Exemplarily, the terminal's location information may refer to the terminal's current location information. The information used to indicate the second range may be used to determine at least one first geographical area. For example, if the at least one first geographical area is a geographical area within the second range, the information used to indicate the second range may refer to the description of the information used to indicate the first range in step S5011 above, and will not be repeated here.

[0225] Exemplarily, the wireless channel parameters / wireless transmission parameters requested to be updated can also be understood as the types of wireless channel parameters / wireless transmission parameters requested to be updated. The wireless channel parameters requested to be updated can be the full set of wireless channel parameters or a subset of the full set, and the wireless transmission parameters requested to be updated can be the full set of wireless transmission parameters or a subset of the full set.

[0226] As a possible implementation, the third information is used to request an update of the wireless environment map parameters of at least one first geographical area, which can also be understood as the third information is used to request calibration / upload / reporting of the wireless environment map parameters of at least one first geographical area.

[0227] In a possible implementation manner, after receiving the third information, the RAN node can decide whether to allow the terminal to update the wireless environment map parameters of at least one first geographical area, or decide on the first geographical area for which the update of the wireless environment map parameters is allowed. If the RAN node does not allow the update of the wireless environment map parameters of any first geographical area, the process ends, or information indicating that the update of the wireless environment map parameters is not allowed is sent to the terminal; if the RAN node allows the update of the wireless environment map parameters of some or all of the at least one first geographical area, the following steps S602 - S603 are executed.

[0228] S602. The RAN node sends the fourth information to the terminal. Correspondingly, the terminal receives the fourth information from the RAN node.

[0229] Among them, the fourth information is used to indicate that the update of the wireless environment map parameters of some or all of the at least one first geographical area is allowed. The fourth information can explicitly or implicitly indicate that the update of some or all of the first geographical areas' wireless environment map parameters is allowed. Exemplarily, there may be the following three implementation manners:

[0230] Manner 1: The fourth information is used to indicate the first resource. The first resource is used to carry the updated wireless environment map parameters of some or all of the first geographical areas.

[0231] Exemplarily, the fourth information may include the time domain position information of the first resource (such as the time domain start position, the number of occupied time domain symbols), the frequency domain position information (such as the frequency domain start position), the spatial domain resource information (such as the antenna port (port)), etc.

[0232] Manner 2: The fourth information is used to activate the first resource. The first resource is used to carry the updated wireless environment map parameters of some or all of the first geographical areas.

[0233] In this manner 2, the first resource may be pre - configured or semi - statically configured by the RAN node. After receiving the fourth information, the first resource is activated, that is, the first resource becomes effective or available.

[0234] The above - mentioned manner 1 and manner 2 can be considered that the fourth information implicitly indicates that the update of the wireless environment map parameters of some or all of the first geographical areas is allowed.

[0235] Method 3: The fourth information uses 1 bit with a value of the first numerical value to indicate permission to update the radio environment map parameters of part or all of the first geographical area.

[0236] Exemplarily, it is possible to define 1 bit to indicate whether to permit updating the radio environment map parameters of part or all of the first geographical area. When the value of this 1 bit is the first numerical value, it represents the fourth information, indicating permission to update; when the value of this 1 bit is the second numerical value, it can indicate non - permission to update. The first numerical value can be "1", and correspondingly, the second numerical value is "0"; or the first numerical value can be "0", and correspondingly, the second numerical value is "1".

[0237] In this method 3, the RAN node can also additionally send information for indicating the first resource or activating the first resource, which can refer to the descriptions in the above method 1 or method 2 and will not be elaborated here.

[0238] In the above three methods, when the fourth information indicates permission to update the radio environment map parameters of part of the first geographical area, the RAN node can also indicate to the terminal the first geographical area where the update is permitted. For example, the RAN node indicates by means of a bitmap or sends the identifiers of these first geographical areas to the terminal.

[0239] S603: The terminal sends the updated radio environment map parameters of part or all of the first geographical area to the RAN node. Correspondingly, the RAN node receives the updated radio environment map parameters of part or all of the first geographical area from the terminal.

[0240] Exemplarily, the terminal sends the updated radio environment map parameters of the first geographical area on the first resource. The RAN node receives the updated radio environment map parameters of the first geographical area from the terminal on the first resource.

[0241] As a possible implementation, for the terminal to update the radio environment map parameters of the first geographical area, it can include: the terminal updates the values of some or all of the parameters in the radio environment map parameters of the first geographical area. At this time, the updated radio environment map parameters of the first geographical area include the updated parameter values.

[0242] As another possible implementation, the terminal divides the first geographical area into multiple smaller - sized sub - areas and determines the radio environment map parameters of each sub - area. At this time, the updated radio environment map parameters of the first geographical area include the radio environment map parameters of each sub - area in the first geographical area.

[0243] As a possible implementation, the terminal can update the radio environment map parameters of the first geographical area based on the measured downlink channel parameter measurement values in the first geographical area and / or the uplink radio transmission parameters used in the first geographical area.

[0244] As a possible implementation, after the terminal determines the wireless environment map parameters of the updated first geographical area, it uses the wireless environment map parameters of the updated first geographical area to overwrite the wireless environment map parameters before the update, that is, the terminal locally refreshes the wireless environment map parameters of the first geographical area.

[0245] Based on the above solution, the terminal can request to update the wireless environment map parameters, and when the RAN node allows the update, send the updated wireless environment map parameters to the RAN node, which can make the wireless environment map parameters closer to the true value, thereby improving the communication performance when using the wireless environment map parameters to assist communication.

[0246] The above Figure 6 The solution shown can be understood as the terminal reporting the updated wireless environment map parameters to the RAN node. In addition, the present application also provides a communication method. In this method, after the terminal obtains the wireless environment map parameters of at least one geographical area, it can report information for updating or calibrating the wireless environment map parameters to the RAN node, so that the RAN node can update or calibrate the wireless environment map parameters based on this information. As Figure 7 shown, the method includes the following steps:

[0247] S701. The terminal sends true value information to the RAN node. Correspondingly, the RAN node receives the true value information from the terminal.

[0248] Among them, the true value information includes at least one measurement of the downlink channel parameter measured in at least one second geographical area, and / or at least one uplink wireless transmission parameter used in at least one second geographical area. At least one second geographical area can be understood as the geographical area in the above at least one geographical area where the terminal performs downlink channel measurement and / or uplink wireless transmission.

[0249] Exemplarily, after the terminal obtains the wireless environment map parameters of at least one geographical area, it can perform downlink channel measurement in at least one second geographical area to obtain the measurement of the downlink channel parameter (or called measurement value) of the at least one second geographical area. And / or, the terminal can perform uplink wireless transmission in at least one second geographical area to obtain the used uplink wireless transmission parameter (or called uplink wireless transmission parameter value).

[0250] Exemplarily, the terminal can send RRC signaling, MAC signaling or physical layer signaling to the RAN node, and carry the true value information in the RRC signaling, MAC signaling or physical layer signaling.

[0251] In a possible implementation manner, the terminal can report the true value information based on the configuration of the RAN node. Exemplarily, as Figure 7As shown, before step S701, the method further includes step S700:

[0252] S700. The RAN node sends first configuration information to the terminal. Correspondingly, the terminal receives the first configuration information from the RAN node. In this scenario, in the above step S701, the terminal sends truth value information according to the first configuration information.

[0253] Among them, the first configuration information is used to configure the terminal to report downlink channel parameter measurement quantities and / or used uplink radio transmission parameters. Exemplarily, the first configuration information can be carried in RRC signaling, MAC signaling, or physical layer signaling. This first configuration information can also be referred to as ground truth report configuration.

[0254] As a possible implementation, the first configuration information is used to configure at least one of the following: downlink reference signal resources, reported downlink channel measurement quantities, a first time unit, reported uplink radio transmission parameters, working frequency bands of reported downlink channel parameters and / or uplink radio transmission parameters, frequency domain granularity of reported downlink channel parameters and / or uplink radio transmission parameters, reporting methods, whether compressed reporting is supported, compression methods, second resources, etc.

[0255] Among them, the downlink reference signal resources can include the time-frequency domain position of the reference signal, or include the time-frequency domain position and ports of the reference signal. The reference signal resources are used for the terminal to perform downlink channel measurement. That is, the terminal can measure the reference signal at the configured time-frequency domain position, and the measurement result is the measured downlink channel parameter measurement quantity. The reference signal can be, for example, CSI-RS or demodulation reference signal (DMRS).

[0256] Among them, the reported downlink channel parameters can indicate the type of reported downlink radio channel parameters, such as whether to feedback time-domain channel parameters or frequency-domain channel parameters. Further, it can indicate the type of the feedback time-domain channel parameters (such as power, delay, AOA, AOD, ZOA, ZOD, etc.).

[0257] Among them, the first time unit is used to indicate the value of the uplink radio transmission parameters used by the terminal when performing uplink transmission in the first time unit. If the first configuration information does not configure the first time unit, then in step S701, the terminal also reports the time unit corresponding to the uplink radio transmission parameter value, which is used to indicate that the terminal reports the uplink radio transmission parameter value used when performing uplink transmission in this time unit.

[0258] Exemplarily, the time unit in this application may refer to an orthogonal frequency division multiplexing (OFDM) symbol, a time slot, a mini-slot, a subframe, etc.

[0259] Among them, the reported uplink radio transmission parameters may refer to the types of uplink radio transmission parameters that the terminal needs to report.

[0260] Among them, the frequency domain granularity of reporting downlink channel parameters and / or uplink radio transmission parameters may be a sub-band or a wideband, that is, it indicates whether the terminal reports the downlink channel parameters and / or uplink radio transmission parameters on each sub-band, or reports the downlink channel parameters and / or uplink radio transmission parameters on the entire wideband.

[0261] Exemplarily, the downlink channel parameters and / or uplink radio transmission parameters on the wideband may be the average values of the downlink and uplink channel parameters and / or uplink radio transmission parameters on each sub-band in this wideband.

[0262] Among them, the reporting method may include periodic reporting (periodic), aperiodic reporting (aperiodic), or semi-persistent scheduling reporting (semiPersistent).

[0263] Among them, whether to support compressed reporting may refer to whether the RAN node supports the terminal to compress when reporting the true value information. If compressed reporting is supported, the compression method may also be included in the first configuration information.

[0264] Among them, the second resource is used to carry the downlink channel parameter measurement quantity and / or the used uplink radio transmission parameters.

[0265] In a possible implementation manner, after step S701, the method further includes the following steps:

[0266] S702. The RAN node updates the wireless environment map parameters according to the true value information.

[0267] Exemplarily, updating the wireless environment map parameters can also be understood as adjusting, fine-tuning, or error-correcting the wireless environment map parameters.

[0268] Exemplarily, as Figure 8 shown, the RAN node may use the true value information as training parameters to train or fine-tune the AI or ML model, and then update the wireless channel parameters and / or wireless transmission parameters of the geographical area.

[0269] It should be noted that this application does not limit the RAN node to only update the wireless environment map parameters of the second geographical area according to the true value information. The RAN node may also update the wireless environment map parameters of other geographical areas according to the true value information. For exampleFigure 8 In the update method shown, the RAN node trains the AI or ML model based on the true value information, so that the wireless environment map parameters in other geographical areas can also be updated.

[0270] In addition, the terminal can also update the wireless environment map parameters based on the true value information. The update method can refer to the method by which the RAN node updates the wireless environment map parameters in step S702, without limitation.

[0271] The above Figure 6 and Figure 7 The methods shown can be considered as updating the wireless environment map parameters based on the true values of the downlink channel parameters and / or the uplink wireless transmission parameters. In addition, updates can also be made based on the true values of the uplink channel parameters and / or the downlink wireless transmission parameters.

[0272] As a possible implementation, similar to Figure 6 the method shown, the RAN node can obtain the true values of the uplink channel parameters and / or the downlink wireless transmission parameters, update the wireless environment map parameters based on the true values, and send the updated wireless environment map parameters to the terminal. For the detailed implementation, reference can be made to Figure 6 the method shown, which will not be elaborated here.

[0273] As another possible implementation, similar to Figure 7 the method shown, the RAN node can send the true values of the uplink channel parameters and / or the downlink wireless transmission parameters to the terminal. After receiving the true values, the terminal can update the wireless environment map parameters based on the true values. In addition, the RAN node can also update the wireless environment map parameters locally based on the true values. For the detailed implementation, reference can be made to Figure 7 the method shown, which will not be elaborated here.

[0274] Based on this solution, the RAN node and / or the terminal can update the wireless environment map parameters based on the measured values of the channel parameters and / or the used wireless transmission parameters, making the predicted wireless environment map parameters closer to the true values, thereby improving the communication performance when using the wireless environment map parameters to assist communication.

[0275] This application also provides a communication method. In this method, after the terminal obtains the wireless environment map parameters of at least one geographical area, it can feedback the credibility of the wireless environment map parameters. As Figure 9 shown, this communication method can include the following steps:

[0276] S901. The terminal sends the fifth information to the RAN node. Correspondingly, the RAN node receives the fifth information from the terminal.

[0277] Among them, the fifth piece of information is used to feedback the credibility of the radio channel parameters and / or radio transmission parameters of at least one third geographical area. The at least one third geographical area can be understood as the geographical area among the above-mentioned at least one geographical area where the terminal has communicated according to the radio environment map parameters of this geographical area.

[0278] It can be understood that the terminal can feedback the credibility of some or all of the radio channel parameters of the third geographical area, and / or the credibility of some or all of the radio transmission parameters to the RAN node.

[0279] Exemplarily, the credibility of the radio channel parameters and / or radio transmission parameters of the third geographical area can be evaluated by the communication performance when the terminal performs downlink communication according to the radio channel parameters and / or radio transmission parameters in the third geographical area.

[0280] In a possible implementation manner, when the fifth piece of information is used to feedback the credibility of the radio channel parameters of the third geographical area:

[0281] As a first possible implementation, the radio channel of the third geographical area may be a multipath channel, and each path has corresponding radio channel parameters, that is, the radio channel parameters of the third geographical area include the radio channel parameters of at least one path. For example, taking the multipath channel including L paths as an example, the radio channel parameters of the third geographical area include the radio channel parameters of path 1, path 2,..., path L (such as power, delay, angle of arrival, angle of departure, etc.). At this time, the fifth piece of information can be used to feedback the credibility of the radio channel parameters of each first path in the third geographical area. Among them, the first path is a path or component in the multipath channel. The radio environment map parameters used by the terminal include the radio channel parameters of the first path.

[0282] Exemplarily, taking L equal to 3 as an example, if the radio environment map parameters used by the terminal during communication include the radio channel parameters of path 1 and path 2, then the fifth piece of information is used to feedback the credibility of the radio channel parameters of path 1 and path 2.

[0283] Exemplarily, the terminal can feedback in the order of the radio channel parameters of the received multipath channel. For example, if the radio channel parameters of the third geographical area received by the terminal are {radio channel parameters of path 1, radio channel parameters of path 2, radio channel parameters of path 3}, then the fifth piece of information may include {credibility of the radio channel parameters of path 1, credibility of the radio channel parameters of path 2, N.A}. N.A indicates that the radio channel parameters of path 3 are not used.

[0284] Among them, the credibility of the radio channel parameters of Path 1 and Path 2 can be indicated by the value of at least one bit. For example, if the credibility is divided into high and low, the fifth information may include {1 / 0, 1 / 0, N.A}. 1 and 0 respectively indicate that the credibility of the radio channel parameters of the path is high and low. It can be understood that if the credibility is divided into more than two levels, the credibility of the radio channel parameters can be indicated by the value of at least two bits.

[0285] Alternatively, the terminal may carry the correspondence between the path identifier and its credibility in the fifth information, for example, carry {Path 1, Credibility 1}, {Path 2, Credibility 2}. The present application does not limit the specific format of the fifth information.

[0286] Optionally, when the radio channel parameters include multiple parameters (such as power, delay, angle of arrival, angle of departure, etc.), the terminal may use some or all of the multiple parameters during communication. In this scenario, based on the fifth information, the terminal may further send sixth information to the RAN node, and correspondingly, the RAN node receives the sixth information from the terminal.

[0287] Among them, the sixth information is used to feedback the credibility of each first radio channel parameter of the first path. The first radio channel parameter is the parameter of the first path used by the terminal, or the radio environment map parameter used by the terminal during communication includes the first radio channel parameter of the first path. The credibility feedback method of the first radio channel parameter may refer to the credibility feedback method of the radio channel parameter of the first path described above, and will not be elaborated here.

[0288] As a second possible implementation, the radio channel parameters of the third geographical area may include the radio channel parameters of at least one frequency domain sub-band, and the fifth information can be used to feedback the credibility of the radio channel parameters of each first frequency domain sub-band. Among them, the radio environment map parameter used by the terminal includes the radio channel parameter of the first frequency domain sub-band. The credibility feedback method of the radio channel parameter of the first frequency domain sub-band may refer to the credibility feedback method of the radio channel parameter of the first path described above, and will not be elaborated here.

[0289] In a possible implementation manner, when the fifth information is used to feedback the credibility of the radio transmission parameters of the third geographical area, the fifth information may be the same as feedbacking the credibility of each first radio transmission parameter of the third geographical area. Among them, the first radio transmission parameter is the radio transmission parameter used by the terminal.

[0290] Exemplarily, the terminal may provide feedback in the order of the received wireless transmission parameters. Taking the wireless transmission parameters of the third geographical area including {uplink MCS, uplink transmit power, uplink TA, PMI, beam indication} as an example, if the wireless transmission parameters used by the terminal are uplink MCS, uplink transmit power, and uplink TA, the fifth information may include {credibility of uplink MCS, credibility of uplink transmit power, credibility of uplink TA, N.A, N.A}. N.A, N.A indicates that PMI and beam indication are not used.

[0291] Alternatively, the terminal may carry the correspondence between the names of the wireless transmission parameters and their credibility in the fifth information, such as carrying {uplink MCS, credibility A}, {uplink transmit power, credibility B}, and {uplink TA, credibility C}.

[0292] In a possible implementation manner, the terminal may provide the credibility of the wireless environment map parameters based on the configuration of the RAN node. Exemplarily, as Figure 9 shown, before step S901, the method further includes step S900:

[0293] S900. The RAN node sends second configuration information to the terminal. Correspondingly, the terminal receives the second configuration information from the RAN node. In this scenario, in the above step S901, the terminal sends the fifth information according to the second configuration information.

[0294] Among them, the second configuration information is used to configure the terminal to provide the credibility of the wireless environment map parameters. Exemplarily, the second configuration information may be carried in RRC signaling, MAC signaling, or physical layer signaling. This second configuration information may also be referred to as a credibility feedback configuration.

[0295] As a possible implementation, the second configuration information is used to configure at least one of the following: wireless channel parameters for which credibility needs to be provided, wireless transmission parameters for which credibility needs to be provided, feedback mode, frequency bands of wireless channel parameters and / or wireless transmission parameters for which credibility needs to be provided, third resources, etc.

[0296] Among them, the wireless channel parameters for which credibility needs to be provided may indicate the types of wireless channel parameters for which credibility needs to be provided. The wireless transmission parameters for which credibility needs to be provided may indicate the types of wireless transmission parameters for which credibility needs to be provided.

[0297] Among them, the feedback mode may include periodic feedback, aperiodic feedback, or semi-persistent scheduling feedback.

[0298] Among them, the third resource is used to carry the reliability of the wireless environment map parameters.

[0299] In a possible implementation manner, after step S901, the RAN node may update the information set of the geographical area according to the fifth information. Exemplarily, if the reliability of the wireless environment map parameters of the third geographical area fed back by the terminal is high, the RAN node may set the reliability of the wireless environment map parameters to high and continue to maintain the information set of the third geographical area; if the reliability of the wireless environment map parameters of the third geographical area fed back by the terminal is low, the RAN node may trigger calibration, such as configuring the terminal to report true value information, etc., to calibrate or update the wireless environment map parameters, or the RAN node may delete the parameters with lower reliability.

[0300] In addition, the RAN node may also evaluate the reliability of the wireless environment map parameters based on the communication performance during downlink communication according to the wireless environment map parameters, and update the information set of the geographical area based on the reliability. After that, the RAN node may also send the updated information set of the geographical area to the terminal.

[0301] Based on this solution, the terminal or the RAN node can timely evaluate the reliability of the wireless environment map parameters, so that relevant processing can be performed based on the reliability, such as triggering calibration or update of low-reliability parameters, or deleting low-reliability parameters, and continuing to maintain high-reliability parameters, etc., to ensure that subsequent communication can use high-reliability or near-true wireless environment map parameters, thereby improving communication performance.

[0302] This application also provides a communication method. In this method, after the RAN node sends the wireless environment map parameters of at least one geographical area to the terminal, the wireless environment map parameters of at least a certain or some geographical areas may be invalidated. As Figure 10 shown, this communication method may include the following steps:

[0303] S1001. The RAN node sends the seventh information to the terminal. Correspondingly, the terminal receives the seventh information from the RAN node.

[0304] Among them, the seventh information is used to indicate that the wireless environment map parameters of at least one fourth geographical area are invalid. At least one fourth geographical area is an area in the above at least one geographical area. Exemplarily, the RAN node may send the seventh information when the reliability of the wireless environment map parameters of the fourth geographical area is low, or the accuracy drops and cannot assist communication, or the wireless environment map parameters of the fourth geographical area cannot be calibrated or updated.

[0305] Exemplarily, the seventh information may be carried in RRC signaling, MAC signaling, or physical layer signaling. The seventh information may be implemented by setting the indication of whether the information set of the geographical area is valid to Off.

[0306] Optionally, whether the wireless environment map parameters are valid may be set on a per-terminal granularity. For example, taking a certain wireless environment map parameter as an example, it may be invalid for a certain terminal but valid for another terminal.

[0307] Alternatively, whether the wireless environment map parameters are valid is unified for the terminals under the RAN node. For example, a certain wireless environment map parameter may be invalid or valid for all terminals under the RAN node. In this case, after the RAN node determines that the wireless environment map parameters of the fourth geographical area are invalid, it may delete the wireless environment map parameters of the fourth geographical area or the information set of the fourth geographical area maintained locally.

[0308] In a possible implementation manner, after receiving the seventh information, the terminal may further perform the following step S1002:

[0309] S1002: When the terminal determines to communicate in at least one fourth geographical area, it falls back to the traditional communication method. That is, the traditional communication method is used for communication in the fourth geographical area.

[0310] Exemplarily, the traditional communication method may be understood as: channel measurement needs to be performed first during communication, and then communication is carried out according to the channel measurement result.

[0311] Based on this solution, the RAN node can indicate to the terminal that the wireless environment map is invalid, avoiding the terminal communicating according to an invalid or low-confidence wireless environment map, which may lead to a reduction in communication performance.

[0312] It should be noted that the above various communication methods may be executed independently of each other or may be combined with each other to form a new communication method, and the present application does not make specific limitations on this.

[0313] In a possible implementation manner, for Figures 6 - 10 the method shown, in the CU-DU architecture or the ORAN system, the functions of interaction between the RAN node and the terminal may be implemented by the DU or the O-DU. The information sent by the RAN node to the terminal may be generated by the DU or the O-DU, or may be generated by the CU or the O-CU and sent to the DU or the O-DU. The processing function of the RAN node may be implemented by the CU or the O-CU, or may be implemented by the DU or the O-DU, or may be jointly implemented by the CU and the DU (or the O-CU and the O-DU), without limitation.

[0314] The method provided in the present application has been described above. In addition, the present application also provides a communication device for implementing the functions described in the above method embodiments.

[0315] It can be understood that, in order to implement the above functions, the communication device includes corresponding hardware structures and / or software modules for executing each function. Those skilled in the art should easily realize that, in combination with the units and algorithm steps of each example described in the embodiments disclosed in this article, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed in the way of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present application.

[0316] The embodiments of the present application can divide the communication device into functional modules according to the above method embodiments. For example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one processing module. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiments of the present application is illustrative, only a logical function division, and there can be other division methods in actual implementation.

[0317] Communication device Figure 11 The structure diagram of a communication device 110 is shown. The communication device 110 includes a processing module 1101 and a transceiver module 1102. The communication device 110 can be used to implement the functions of the above terminal or RAN node.

[0318] In some embodiments, the communication device 110 may further include a storage module ( Figure 11 not shown in the figure) for storing program instructions and data.

[0319] In some embodiments, the transceiver module 1102, which can also be referred to as a transceiver unit, is used to implement the sending and / or receiving functions. The transceiver module 1102 can be composed of a transceiver circuit, a transceiver, a transceiver, or a communication interface.

[0320] In some embodiments, the transceiver module 1102 may include a receiving module and a sending module, which are respectively used to execute the receiving and sending steps executed by the terminal or RAN node in the above method embodiments, and / or other processes for supporting the technologies described in this article; the processing module 1101 can be used to execute the processing steps executed by the terminal or RAN node in the above method embodiments, and / or other processes for supporting the technologies described in this article.

[0321] When the communication device 110 is used to implement the functions of a terminal or a RAN node:

[0322] A processing module 1101, configured to obtain first information, where the first information includes information of at least one geographical area and radio environment map parameters of at least one geographical area, and the radio environment map parameters include radio channel parameters and / or radio transmission parameters associated with the radio channel parameters; the first information further includes at least one of the following: the operating frequency band of the radio environment map parameters, an indication of whether the radio environment map parameters are valid, the type of the radio environment map parameters, and the type of the radio environment map parameters is used to indicate whether the radio environment map parameters are true values; a transceiver module 1102, configured to communicate according to the first information.

[0323] Optionally, the processing module 1101, configured to obtain the first information, includes: the processing module 1101, configured to send second information through the transceiver module 1102, where the second information is used to request radio environment map parameters of at least one geographical area; the processing module 1101 is further configured to receive the first information through the transceiver module 1102.

[0324] When the communication device 110 is used to implement the functions of a terminal:

[0325] Optionally, the transceiver module 1102 is further configured to send third information, where the third information is used to request an update of radio environment map parameters of at least one first geographical area; the transceiver module 1102 is further configured to receive fourth information, where the fourth information is used to indicate that an update of radio environment map parameters of some or all of the at least one first geographical area is allowed; the transceiver module 1102 is further configured to send the updated radio environment map parameters of some or all of the at least one first geographical area.

[0326] Optionally, the transceiver module 1102 is further configured to send the measured values of downlink channel parameters measured in at least one second geographical area, and / or the uplink radio transmission parameters used in at least one second geographical area.

[0327] Optionally, the transceiver module 1102 is specifically configured to receive first configuration information, where the first configuration information is used to configure the terminal to report the measured values of downlink channel parameters and / or the uplink radio transmission parameters used; and is configured to send the measured values of downlink channel parameters measured in at least one second geographical area, and / or the uplink radio transmission parameters used in at least one second geographical area according to the first configuration information.

[0328] Optionally, the transceiver module 1102 is further configured to send fifth information, where the fifth information is used to feedback the credibility of radio channel parameters and / or radio transmission parameters of at least one third geographical area.

[0329] Optionally, when the fifth information is used to feedback the credibility of the radio channel parameters of each first path in the third geographical area, the transceiver module 1102 is further configured to send sixth information, where the sixth information is used to feedback the credibility of each first radio channel parameter of each first path.

[0330] Optionally, the transceiver module 1102 is further configured to receive seventh information, where the seventh information is used to indicate that the radio environment map parameters of at least one fourth geographical area are invalid.

[0331] Optionally, the processing module 1101 is further configured to determine that when communicating in at least one fourth geographical area, channel measurement is first performed and then communication is performed according to the channel measurement results.

[0332] When the communication device 110 is used to implement the functions of a RAN node:

[0333] Optionally, the transceiver module 1102 is further configured to receive third information, where the third information is used to request an update of the radio environment map parameters of at least one first geographical area; the transceiver module 1102 is further configured to send fourth information, where the fourth information is used to indicate that an update of the radio environment map parameters of some or all of the at least one first geographical area is allowed; the transceiver module 1102 is further configured to receive the updated radio environment map parameters of some or all of the first geographical areas.

[0334] Optionally, the transceiver module 1102 is further configured to receive the measured values of the downlink channel parameters measured in at least one second geographical area, and / or the uplink radio transmission parameters used in at least one second geographical area.

[0335] Optionally, the transceiver module 1102 is further configured to send first configuration information, where the first configuration information is used to configure the terminal to report the measured values of the downlink channel parameters and / or the uplink radio transmission parameters used.

[0336] Optionally, the transceiver module 1102 is further configured to receive fifth information, where the fifth information is used to feedback the credibility of the radio channel parameters and / or radio transmission parameters of at least one third geographical area.

[0337] Optionally, when the fifth information is used to feedback the credibility of the radio channel parameters of each first path in the third geographical area, the transceiver module 1102 is further configured to receive sixth information, where the sixth information is used to feedback the credibility of each first radio channel parameter of each first path.

[0338] Optionally, the transceiver module 1102 is further configured to receive seventh information, where the seventh information is used to indicate that the radio environment map parameters of at least one fourth geographical area are invalid.

[0339] Among them, all relevant contents of each step involved in the above method embodiments can be cited in the function descriptions of the corresponding functional modules, and will not be elaborated here.

[0340] In the present application, the communication device 110 may be presented in the form of dividing each functional module in an integrated manner. Here, the "module" may refer to a specific application-specific integrated circuit (ASIC), a circuit, a processor and a memory that execute one or more software or firmware programs, an integrated logic circuit, and / or other devices that can provide the above functions.

[0341] In some embodiments, when Figure 11 the communication device 110 in is a chip or a chip system, the function / implementation process of the transceiver module 1102 may be implemented through the input / output interface (or communication interface) of the chip or chip system, and the function / implementation process of the processing module 1101 may be implemented through the processor (or processing circuit) of the chip or chip system.

[0342] Since the communication device 110 provided in this embodiment can execute the above method, the technical effects that can be obtained thereby can refer to the above method embodiments, and will not be elaborated here.

[0343] As a possible product form, the terminal or RAN node described in the embodiments of the present application may be implemented using the following: one or more field programmable gate arrays (FPGAs), programmable logic devices (PLDs), controllers, state machines, gate logic, discrete hardware components, any other suitable circuits, or any combination of circuits capable of performing the various functions described throughout the present application.

[0344] As another possible product form, the terminal or RAN node described in the embodiments of the present application may be implemented by a general bus architecture. For ease of illustration, refer to Figure 12 , Figure 12 is a schematic structural diagram of a communication device 1200 provided in the embodiments of the present application. The communication device 1200 includes a processor 1201 and a transceiver 1202. The communication device 1200 may be a terminal, or a chip or chip system therein; or, the communication device 1200 may be a RAN node, or a chip or module therein. Figure 12 Only the main components of the communication device 1200 are shown. In addition to the processor 1201 and the transceiver 1202, the communication device may further include a memory 1203 and an input / output device (not shown in the figure).

[0345] Optionally, the processor 1201 is mainly used to process communication protocols and communication data, control the entire communication device, execute software programs, and process the data of software programs, so as to implement the methods provided in the above method embodiments. The memory 1203 is mainly used to store software programs and data. The transceiver 1202 may include a radio frequency circuit and an antenna. The radio frequency circuit is mainly used for the conversion between baseband signals and radio frequency signals and the processing of radio frequency signals. The antenna is mainly used to transmit and receive radio frequency signals in the form of electromagnetic waves. The input / output device, such as a touch screen, a display screen, a keyboard, etc., is mainly used to receive data input by the user and output data to the user.

[0346] Optionally, the processor 1201, the transceiver 1202, and the memory 1203 may be connected through a communication bus.

[0347] After the communication device is powered on, the processor 1201 may read the software program in the memory 1203, execute the instructions of the software program, and process the data of the software program. When data needs to be wirelessly transmitted, the processor 1201 performs baseband processing on the data to be transmitted and then outputs a baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal and then transmits the radio frequency signal outward in the form of electromagnetic waves through the antenna. When data is sent to the communication device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 1201. The processor 1201 converts the baseband signal into data and processes the data.

[0348] In another implementation, the radio frequency circuit and the antenna may be provided independently of the processor performing baseband processing. For example, in a distributed scenario, the radio frequency circuit and the antenna may be independent of the communication device and arranged in a remote form.

[0349] In some embodiments, in terms of hardware implementation, those skilled in the art can conceive that the above communication device 110 may adopt Figure 12 the form of the communication device 1200 shown.

[0350] As an example, Figure 11 the function / implementation process of the processing module 1101 in Figure 12 can be implemented by the processor 1201 in the communication device 1200 shown calling the computer-executable instructions stored in the memory 1203. Figure 11 the function / implementation process of the transceiver module 1102 in Figure 12 can be implemented by the transceiver 1202 in the communication device 1200 shown.

[0351] As another possible product form, the terminal or RAN node in the present application may adopt Figure 13The shown composition structure, or includes Figure 13 the shown components. Figure 13 FIG. 4 is a schematic diagram of the composition of a communication device 1300 provided by the present application. The communication device 1300 may be a terminal, or a chip or a system-on-chip in the terminal; alternatively, it may be a RAN node, or a module, chip, or system-on-chip in the RAN node.

[0352] As Figure 13 shown, the communication device 1300 includes at least one processor 1301 and at least one communication interface ( Figure 13 only one communication interface 1304 and one processor 1301 are taken as examples for illustration). Optionally, the communication device 1300 may further include a communication bus 1302 and a memory 1303.

[0353] The processor 1301 may be a general-purpose central processing unit (CPU), a general-purpose processor, a network processor (NP), a digital signal processor (DSP), a microprocessor, a microcontroller, a PLD, or any combination thereof. The processor 1301 may also be other devices with processing functions, such as circuits, devices, or software modules, without limitation.

[0354] The communication bus 1302 is used to connect different components in the communication device 1300, so that different components can communicate. The communication bus 1302 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. For the sake of convenience of representation, Figure 13 only a thick line is used to represent it in FIG. 4, but it does not mean that there is only one bus or one type of bus.

[0355] The communication interface 1304 is used to communicate with other devices or communication networks. Exemplarily, the communication interface 1304 may be a module, a circuit, a transceiver, or any device capable of implementing communication. Optionally, the communication interface 1304 may also be an input / output interface located in the processor 1301 to implement signal input and signal output of the processor.

[0356] The memory 1303 may be a device with a storage function, used to store instructions and / or data. Among them, the instructions may be computer programs.

[0357] Exemplarily, the memory 1303 may be a read-only memory (ROM) or other types of static storage devices that can store static information and / or instructions, or a random access memory (RAM) or other types of dynamic storage devices that can store information and / or instructions. It may also be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM), or other optical disc storage, optical disc storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media, or other magnetic storage devices, without limitation.

[0358] It should be noted that the memory 1303 may exist independently of the processor 1301 or be integrated with the processor 1301. The memory 1303 may be located inside the communication device 1300 or outside the communication device 1300, without limitation. The processor 1301 may be used to execute the instructions stored in the memory 1303 to implement the method provided in the following embodiments of the present application.

[0359] As an alternative implementation, the communication device 1300 may further include an output device 1305 and an input device 1306. The output device 1305 communicates with the processor 1301 and can display information in various ways. For example, the output device 1305 may be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector, etc. The input device 1306 communicates with the processor 1301 and can receive user input in various ways. For example, the input device 1306 may be a mouse, a keyboard, a touch screen device, or a sensing device, etc.

[0360] In some embodiments, in terms of hardware implementation, those skilled in the art can conceive that the Figure 11 shown communication device 110 may adopt the Figure 13 form of the shown communication device 1300.

[0361] As an example, Figure 11 the function / implementation process of the processing module 1101 in Figure 13 can be implemented by the processor 1301 in the shown communication device 1300 calling the computer-executable instructions stored in the memory 1303.Figure 11 The function / implementation process of the transceiver module 1102 in Figure 13 can be implemented by the communication interface 1304 in the communication device 1300 shown in

[0362] It should be noted that Figure 13 the structure shown does not constitute a specific limitation on the terminal or RAN node. For example, in some other embodiments of the present application, the terminal or RAN node may include more or fewer components than shown in the figure, or combine certain components, or split certain components, or have different component arrangements. The components shown in the figure can be implemented in hardware, software, or a combination of software and hardware.

[0363] In some embodiments, the embodiments of the present application further provide a communication device, which includes a processor for implementing the method in any of the above method embodiments.

[0364] As a possible implementation manner, the communication device further includes a memory. The memory is used to store necessary computer programs and data. The computer program may include instructions, and the processor may call the instructions stored in the memory in the computer program to instruct the communication device to execute the method in any of the above method embodiments. Of course, the memory may not be in the communication device.

[0365] As another possible implementation manner, the communication device further includes an interface circuit, which is a code / data read / write interface circuit for receiving computer execution instructions (the computer execution instructions are stored in the memory, and may be directly read from the memory or may pass through other devices) and transmitting them to the processor.

[0366] As yet another possible implementation manner, the communication device further includes a communication interface for communicating with modules outside the communication device.

[0367] It can be understood that the communication device may be a chip or a chip system. When the communication device is a chip system, it may be composed of chips or may include chips and other discrete devices. The embodiments of the present application do not make specific limitations on this.

[0368] The present application also provides a computer-readable storage medium, on which a computer program or instructions are stored, and when the computer program or instructions are executed by a computer, the functions in any of the above method embodiments are implemented.

[0369] The present application also provides a computer program product, and when the computer program product is executed by a computer, the functions in any of the above method embodiments are implemented.

[0370] Those of ordinary skill in the art can understand that for the convenience and brevity of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated herein.

[0371] It can be understood that the systems, devices, and methods described in this application can also be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections between each other can be through some interfaces. The indirect couplings or communication connections of the devices or units can be in electrical, mechanical, or other forms.

[0372] The units described as separate components may or may not be physically separated, that is, they can be located in one place or distributed to multiple network units. The components shown as units may or may not be physical units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0373] In addition, the functional units in each embodiment of this application can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit.

[0374] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using a software program, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from a website, computer, server, or data center to another website, computer, server, or data center by wire (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wirelessly (such as infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more media integrated therein. The available medium can be a magnetic medium (such as a floppy disk, hard disk, magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid state drive (SSD)), etc. In the embodiments of the present application, the computer can include the devices described above.

[0375] Although the present application has been described in connection with various embodiments, however, in the process of implementing the claimed present application, those skilled in the art can understand and implement other variations of the disclosed embodiments by viewing the accompanying drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "one" does not exclude a plurality. A single processor or other unit can implement several functions recited in the claims. Certain measures are recited in mutually different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0376] Although the present application has been described in connection with specific features and their embodiments, it is obvious that various modifications and combinations can be made without departing from the scope of the present application. Accordingly, the present specification and the drawings are merely exemplary descriptions of the present application defined by the appended claims, and are considered to have covered any and all modifications, variations, combinations, or equivalents within the scope of the present application. Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these changes and modifications.

Claims

1. A communication method, characterized in that, The method includes: Obtaining first information, where the first information includes information of at least one geographical area and radio environment map parameters of the at least one geographical area, and the radio environment map parameters include radio channel parameters and / or radio transmission parameters associated with the radio channel parameters; the first information further includes at least one of the following: the operating frequency band of the radio environment map parameters, an indication of whether the radio environment map parameters are valid, the type of the radio environment map parameters, and the type of the radio environment map parameters is used to indicate whether the radio environment map parameters are true values; Performing communication according to the first information.

2. The method according to claim 1, characterized in that, The first information further includes the credibility of the radio environment map parameters.

3. The method according to claim 1 or 2, characterized in that, The radio channel parameters include at least one of the following: channel multipath power, channel multipath delay, channel multipath horizontal arrival angle, channel multipath horizontal departure angle, channel multipath vertical arrival angle, channel multipath vertical departure angle, or frequency-domain channel response on at least one frequency-domain bandwidth.

4. The method according to any one of claims 1 to 3, characterized in that, The radio transmission parameters include at least one of the following: modulation and coding scheme MCS, uplink transmit power, uplink timing advance TA, precoding matrix indicator PMI, beam indication, reference signal received power.

5. The method according to any one of claims 1-4, characterized in that, The type of the radio environment map parameters includes true values or predicted values.

6. The method according to any one of claims 1 to 5, characterized in that The obtaining of the first information includes: Sending second information, where the second information is used to request the radio environment map parameters of the at least one geographical area; Receiving the first information.

7. The method according to claim 6, wherein The second information includes at least one of the following: location information of the terminal, information for indicating a first range, identifiers of at least one geographical area, and the at least one geographical area is a geographical area within the first range.

8. The method according to claim 6 or 7, characterized in that, The second information includes at least one of the following: the operating frequency band of the requested radio environment map parameters, the requested radio channel parameters, the requested radio transmission parameters.

9. The method according to any one of claims 1-8, characterized in that, The at least one geographical area includes at least one first geographical area; the method further includes: Sending third information, where the third information is used to request an update of the radio environment map parameters of the at least one first geographical area; Receiving fourth information, where the fourth information is used to indicate permission to update the radio environment map parameters of some or all of the at least one first geographical area; Sending the updated radio environment map parameters of some or all of the at least one first geographical area.

10. The method according to claim 9, wherein The third information includes at least one of the following: location information of the terminal, information for indicating a second range, identifiers of the at least one first geographical area, the operating frequency band of the requested updated radio environment map parameters, the requested updated radio channel parameters, the requested updated radio transmission parameters; and the at least one first geographical area is a geographical area within the second range.

11. The method according to any one of claims 1 to 10, characterized in that, The at least one geographical area includes at least one second geographical area; the method further includes: Sending downlink channel parameter measurement quantities measured in the at least one second geographical area, and / or uplink radio transmission parameters used in the at least one second geographical area.

12. The method according to claim 11, wherein Sending the measured downlink channel parameter measurements in the at least one second geographical area, and / or the uplink radio transmission parameters used in the at least one second geographical area, includes: Receiving first configuration information for configuring the terminal to report the measured downlink channel parameter measurements and / or the uplink radio transmission parameters used; According to the first configuration information, sending the measured downlink channel parameter measurements in the at least one second geographical area, and / or the uplink radio transmission parameters used in the at least second geographical area.

13. The method according to claim 12, wherein The first configuration information for configuring the terminal to report the measured downlink channel parameter measurements and / or the uplink radio transmission parameters used includes: the first configuration information is used to configure at least one of the following: Downlink reference signal resources, reported downlink channel measurement quantities, first time units, reported uplink radio transmission parameters, working frequency bands of reported downlink channel parameters and / or uplink radio transmission parameters, frequency domain granularity of reported downlink channel parameters and / or uplink radio transmission parameters, reporting methods, whether compressed reporting is supported, compression methods, second resources; Wherein, the downlink reference signal resources are used by the terminal for downlink channel measurement; The first time unit is used to indicate the uplink radio transmission parameter values used when uplink transmission is performed in the first time unit; The reporting methods include periodic reporting, aperiodic reporting, or semi-persistent scheduling reporting; The second resources are used to carry the measured downlink channel parameter measurements and / or the uplink radio transmission parameters used.

14. The method according to any one of claims 1-13, characterized in that, The at least one geographical area includes at least one third geographical area; the method further includes: Sending fifth information for feeding back the reliability of the radio channel parameters and / or radio transmission parameters of the at least one third geographical area.

15. The method according to claim 14, characterized in that The fifth information is used to feed back the reliability of the radio channel parameters of each first path in the third geographical area, and the radio environment map parameters used by the terminal include the radio channel parameters of each first path; And / or The fifth information is used to feed back the reliability of the radio channel parameters of each first frequency domain sub-band in the third geographical area, and the radio environment map parameters used by the terminal include the radio channel parameters of each first frequency domain sub-band.

16. The method according to claim 14 or 15, characterized in that, The fifth information is used to feed back the reliability of each first radio transmission parameter in the third geographical area, and the radio transmission parameters used by the terminal include each first radio transmission parameter.

17. The method according to any one of claims 1-16, characterized in that, The at least one geographical area includes at least one fourth geographical area; the method further includes: Receiving seventh information for indicating that the radio environment map parameters of the at least one fourth geographical area are invalid.

18. The method according to claim 6 or 8, characterized in that, The second information includes the identifier of the first cell managed by the radio access network (RAN) node, and the at least one geographical area includes the geographical area in the first cell.

19. The method according to any one of claims 1-6 and 18, characterized in that, The at least one geographical area includes at least one first geographical area; the method further includes: Receiving third information for requesting an update of the radio environment map parameters of the at least one first geographical area. Send a fourth piece of information, where the fourth piece of information is used to indicate permission to update wireless environment map parameters of some or all of the at least one first geographical area; Receive the updated wireless environment map parameters of some or all of the first geographical area.

20. The method according to claim 19, wherein The third piece of information includes at least one of the following: location information of the terminal, information used to indicate a second range, an identifier of the at least one first geographical area, an operating frequency band of the wireless environment map parameters for which an update is requested, wireless channel parameters for which an update is requested, wireless transmission parameters for which an update is requested; the at least one first geographical area is a geographical area within the second range.

21. The method according to any one of claims 1-6, 18-20, characterized in that, The at least one geographical area includes at least one second geographical area; the method further includes: Receive downlink channel parameter measurement quantities measured in the at least one second geographical area, and / or uplink wireless transmission parameters used in the at least one second geographical area.

22. The method according to claim 21, wherein The method further includes: Send first configuration information, where the first configuration information is used to configure the terminal to report downlink channel parameter measurement quantities and / or used uplink wireless transmission parameters.

23. The method according to claim 22, wherein The first configuration information for configuring the terminal to report downlink channel parameter measurement quantities and / or used uplink wireless transmission parameters includes: the first configuration information is used to configure at least one of the following: Downlink reference signal resources, reported downlink channel parameter measurement quantities, a first time unit, reported uplink wireless transmission parameters, an operating frequency band of the reported downlink channel parameters and / or uplink wireless transmission parameters, a frequency domain granularity of the reported downlink channel parameters and / or uplink wireless transmission parameters, a reporting method, whether compressed reporting is supported, a compression method, a second resource; Wherein, the downlink reference signal resources are used by the terminal for downlink channel measurement; The first time unit is used to indicate the value of the uplink wireless transmission parameters used during uplink transmission in the first time unit; The reporting method includes periodic reporting, aperiodic reporting, or semi-persistent scheduling reporting; The second resource is used to carry the downlink channel parameter measurement quantities and / or used uplink wireless transmission parameters.

24. The method according to any one of claims 1-6, 18-23, characterized in that, The at least one geographical area includes at least one third geographical area; the method further includes: Receive a fifth piece of information, where the fifth piece of information is used to feedback the credibility of wireless channel parameters and / or wireless transmission parameters of the at least one third geographical area.

25. The method according to claim 24, wherein The fifth piece of information is used to feedback the credibility of the wireless channel parameters of each first path in the third geographical area, and the wireless environment map parameters used by the terminal include the wireless channel parameters of each first path; And / or, The fifth piece of information is used to feedback the credibility of the wireless channel parameters of each first frequency sub-band in the third geographical area, and the wireless environment map parameters used by the terminal include the wireless channel parameters of each first frequency sub-band.

26. The method according to claim 24 or 25, characterized in that, The fifth piece of information is used to feedback the credibility of each first wireless transmission parameter in the third geographical area, and the wireless transmission parameters used by the terminal include each first wireless transmission parameter.

27. The method according to any one of claims 1-6, 18-26, characterized in that, The at least one geographical area includes at least one fourth geographical area; the method further includes: Receive a seventh piece of information, where the seventh piece of information is used to indicate that the wireless environment map parameters of the at least one fourth geographical area are invalid.

28. A communication device, characterized in that, The communication device includes a processor; the processor is configured to run a computer program or instruction, so that the communication device executes the method according to any one of claims 1-27.

29. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions or programs. When the computer instructions or programs are run on a computer, the method according to any one of claims 1-27 is executed.

30. A computer program product, characterized in that, The computer program product includes computer instructions; when some or all of the computer instructions are run on a computer, the method according to any one of claims 1-27 is executed.

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