Communication method and device

Abstract

A communication method and device, for use in reducing the pilot overhead of a system, reducing the power consumption of a terminal or an RAN node caused by pilot measurement, and facilitating energy saving of the terminal or the RAN node. The method comprises: a terminal or an RAN node acquires first information, and performs communication on the basis of the first information. The first information comprises information of at least one geographic region and a radio environment map parameter of the at least one geographic region. The radio environment map parameter comprises a radio channel parameter and / or a radio transmission parameter associated with the radio channel parameter. The first information further comprises at least one of the following: a working frequency band of the radio environment map parameter, an indication of whether the radio environment map parameter is valid, and the type of the radio environment map parameter. The type of the radio environment map parameter is used for indicating whether the radio environment map parameter is a true value.

Description

Communication method and device

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on February 1, 2024, with application number 202410158327.5 and application name “Communication Method and Device,” the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The embodiments of the present application relate to the field of communications, and in particular to communication methods and devices. Background Art

[0003] In mobile communication networks, wireless signal transmission is linked to the surrounding physical environment through a radio channel. Specifically, after being emitted from a transmitter, radio electromagnetic waves are reflected, scatter, and diffracted by various objects along the propagation path before reaching the receiver. The transmitter and receiver can measure channel characteristics based on pilot signals and select appropriate transmission and reception parameters based on these channel measurement results.

[0004] However, with the increase in channel bandwidth, antenna arrays, and transmission channels in sixth-generation (6G) wireless networks, the transceiver needs to perform frequent measurements when obtaining wireless channel characteristics by measuring pilot signals, resulting in increased power consumption of the device. Summary of the Invention

[0005] The present application provides a communication method and apparatus that can reduce device power consumption and facilitate terminal energy saving.

[0006] In a first aspect, a communication method is provided, which can be executed by a terminal, or by a component of the terminal, such as a processor, chip, or chip system of the terminal, or by a logic module or software that can implement all or part of the terminal functions. The method includes: obtaining first information, and communicating according to the first information. The first information includes information of at least one geographical area and wireless environment map parameters of at least one geographical area, and the wireless environment map parameters include wireless channel parameters and / or wireless transmission parameters associated with the wireless channel parameters. The first information also includes at least one of the following: an operating frequency band of the wireless environment map parameter, an indication of whether the wireless environment map parameter is valid, and a type of the wireless environment map parameter. The type of the wireless environment map parameter is used to indicate whether the wireless environment map parameter is a true value.

[0007] Based on this solution, the terminal 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 for that geographical area can be directly searched, and communication can be performed based on these parameters. Compared to traditional methods that rely entirely on pilot measurement to obtain wireless channel parameters and wireless transmission parameters, this solution can reduce the system's pilot overhead and the power consumption of the terminal caused by pilot measurement, which is beneficial for terminal energy conservation. In addition, when the wireless transmission parameters of a geographical area are pre-acquired, the RAN node does not need to decide on the wireless transmission parameters, nor does it need to indicate these wireless transmission parameters to the terminal through signaling. This simplifies the processing complexity of the RAN node and further reduces signaling overhead.

[0008] In one possible design, obtaining the first information includes: sending second information, where the second information is used to request wireless environment map parameters of at least one geographical area; and receiving the first information.

[0009] Based on this possible design, the terminal may send second information to the RAN node to request radio environment map parameters for at least one geographical area. Compared to the terminal independently determining the radio environment map parameters for at least one geographical area, this can reduce the processing complexity of the terminal.

[0010] In one possible design, the second information includes at least one of the following: location information of the terminal, information indicating the first range, and an identifier of at least one geographical area, where the at least one geographical area is a geographical area in the first range.

[0011] In one possible design, the second information also includes at least one of the following: a requested working frequency band of the wireless environment map parameters, a requested wireless channel parameter, and a requested wireless transmission parameter.

[0012] In one possible design, at least one geographical area includes at least one first geographical area, and the method further includes: sending third information, the third information is used to request updating of wireless environment map parameters of at least one first geographical area; receiving fourth information, the fourth information is used to indicate that updating of wireless environment map parameters of part or all of the at least one first geographical area is allowed; and sending the updated wireless environment map parameters of part or all of the first geographical areas.

[0013] Based on this possible design, the terminal can request to update the wireless environment map parameters, and send the updated wireless environment map parameters to the RAN node if the RAN node allows the update, 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.

[0014] In one possible design, the third information includes 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 a wireless environment map parameter requested to be updated, a wireless channel parameter requested to be updated, and a wireless transmission parameter requested to be updated. The at least one first geographical area is a geographical area in the second range.

[0015] In one possible design, the fourth information is used to indicate that the wireless environment map parameters of part or all of at least one first geographical area are allowed to be updated, including: the fourth information is used to indicate the first resource, and the first resource is used to carry the updated wireless environment map parameters of part or all of the first geographical area.

[0016] In one possible design, at least one geographical area includes at least one second geographical area, and the method further includes: sending downlink channel parameter measurement quantities measured in at least one second geographical area, and / or uplink wireless transmission parameters used in at least one second geographical area.

[0017] Based on this possible design, the terminal sends the measured downlink channel parameter measurement amount and / or the used uplink wireless transmission parameter, so that the RAN node can update the wireless environment map parameters based on the channel parameter measurement amount and / or the used wireless transmission parameter, thereby making the predicted wireless environment map parameters closer to the true value, thereby improving the communication performance when using the wireless environment map parameters to assist communication.

[0018] In one possible design, sending downlink channel parameter measurement quantities measured in at least one second geographical area, and / or uplink wireless transmission parameters used in at least one second geographical area, includes: receiving first configuration information, the first configuration information being used to configure the terminal to report downlink channel parameter measurement quantities and / or uplink wireless transmission parameters used; and sending downlink channel parameter measurement quantities measured in at least one second geographical area, and / or uplink wireless transmission parameters used in at least the second geographical area according to the first configuration information.

[0019] In one possible design, the first configuration information is used to configure the terminal to report the downlink channel parameter measurement amount and / or the uplink wireless transmission parameter used, including: the first configuration information is used to configure at least one of the following: downlink reference signal resources, reported downlink channel measurement amount, first time unit, reported uplink wireless transmission parameter, working frequency band of reported downlink channel parameter and / or uplink wireless transmission parameter, frequency domain granularity for reporting downlink channel parameter and / or uplink wireless transmission parameter, reporting mode, whether compressed reporting is supported, compression mode, and second resource. Among them, the downlink reference signal resource is used for the terminal to perform downlink channel measurement; the first time unit is used to indicate the uplink wireless transmission parameter value used when performing uplink transmission in the first time unit; the reporting mode includes periodic reporting, non-periodic reporting, or semi-persistent scheduling reporting; and the second resource is used to carry the downlink channel parameter measurement amount and / or the uplink wireless transmission parameter used.

[0020] In one 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 wireless channel parameters and / or wireless transmission parameters of the at least one third geographical area.

[0021] Based on this possible design, the terminal can promptly evaluate and provide feedback to the RAN node on the credibility of the wireless environment map parameters, 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., to ensure that subsequent communications can use highly reliable or close-to-true wireless environment map parameters, thereby improving communication performance.

[0022] In one possible design, the fifth information is used to provide feedback on the credibility of wireless channel parameters for each first path in the third geographical area, where the wireless environment map parameters used by the terminal include the wireless channel parameters for each first path. And / or, the fifth information is used to provide feedback on the credibility of wireless channel parameters for each first frequency domain subband in the third geographical area, where the wireless environment map parameters used by the terminal include the wireless channel parameters for each first frequency domain subband.

[0023] Based on this possible design, the credibility of the wireless channel parameters of the path or frequency domain subband used by the terminal can be fed back with the granularity of the path or the frequency domain subband. Compared with feeding back the credibility of the wireless channel parameters of all paths or all frequency domain subbands, the feedback overhead can be reduced.

[0024] In one possible design, the fifth information is used to feedback the credibility of the wireless channel parameters of each first path in the third geographical area. The method also includes: sending sixth information, the sixth information is used to feedback the credibility 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.

[0025] Based on this possible design, the credibility of the wireless channel parameters used by the terminal can be fed back at the granularity of the wireless channel parameters, which can improve the precision of the feedback, thereby enabling the RAN node to more accurately correct the wireless channel parameters and improve the accuracy of the wireless channel parameters.

[0026] In one possible design, the fifth information is used to feed back 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.

[0027] Based on this possible design, the credibility of the wireless transmission parameters used by the terminal can be fed back at the granularity of the wireless transmission parameters, which can improve the fineness of the feedback, thereby enabling the RAN node to more accurately correct the wireless transmission parameters and improve the accuracy of the wireless transmission parameters.

[0028] In one possible design, the 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 the at least one fourth geographical area are invalid.

[0029] Based on this possible design, the RAN node can indicate to the terminal that the wireless environment map is invalid, thereby preventing the terminal from communicating based on an invalid or low-reliability wireless environment map, which would result in reduced communication performance.

[0030] In one possible design, the method further includes: when determining to communicate in at least one fourth geographical area, first performing channel measurement, and then communicating based on the channel measurement results.

[0031] Based on this possible design, when the wireless environment map parameters of the fourth geographical area are invalid, the terminal falls back to the traditional communication mode, thereby improving the compatibility of the present application solution with the traditional communication mode.

[0032] On the second aspect, a communication method is provided, which can be executed by a RAN node, or by a component of a RAN node, such as a processor, chip, or chip system of a RAN node, or by a logic module or software that can implement all or part of the functions of a RAN node. The method includes: obtaining first information, and communicating according to the first information. The first information includes information of at least one geographical area and wireless environment map parameters of at least one geographical area, and the wireless environment map parameters include wireless channel parameters and / or wireless transmission parameters associated with the wireless channel parameters. The first information also includes at least one of the following: an operating frequency band of the wireless environment map parameter, an indication of whether the wireless environment map parameter is valid, and a type of the wireless environment map parameter, and the type of the wireless environment map parameter is used to indicate whether the wireless environment map parameter is a true value. The technical effects brought about by the second aspect can refer to the technical effects brought about by the first aspect mentioned above, and will not be repeated here.

[0033] In one possible design, obtaining the first information includes: sending second information, where the second information is used to request wireless environment map parameters of at least one geographical area; and receiving the first information.

[0034] In one possible design, the second information includes an identifier of a first cell managed by the RAN node, and the at least one geographical area includes a geographical area in the first cell.

[0035] In one possible design, the second information also includes at least one of the following: a requested working frequency band of the wireless environment map parameters, a requested wireless channel parameter, and a requested wireless transmission parameter.

[0036] In one possible design, at least one geographical area includes at least one first geographical area, and the method further includes: receiving third information, the third information being used to request updating of wireless environment map parameters of at least one first geographical area; sending fourth information, the fourth information being used to indicate that updating of wireless environment map parameters of part or all of the at least one first geographical area is allowed; and receiving updated wireless environment map parameters of part or all of the first geographical areas.

[0037] In one possible design, the third information includes 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 a wireless environment map parameter requested to be updated, a wireless channel parameter requested to be updated, and a wireless transmission parameter requested to be updated. The at least one first geographical area is a geographical area within the second range.

[0038] In one possible design, the fourth information is used to indicate that the wireless environment map parameters of part or all of at least one first geographical area are allowed to be updated, including: the fourth information is used to indicate the first resource, and the first resource is used to carry the updated wireless environment map parameters of part or all of the first geographical area.

[0039] In one possible design, at least one geographical area includes at least one second geographical area, and the method further includes: receiving downlink channel parameter measurement quantities measured in at least one second geographical area, and / or uplink wireless transmission parameters used in at least one second geographical area.

[0040] In one possible design, the method further includes: sending first configuration information, where the first configuration information is used to configure the terminal to report downlink channel parameter measurement quantities and / or uplink wireless transmission parameters used.

[0041] In one possible design, the first configuration information is used to configure the terminal to report the downlink channel parameter measurement amount and / or the uplink wireless transmission parameter used, including: the first configuration information is used to configure at least one of the following: downlink reference signal resources, reported downlink channel measurement amount, first time unit, reported uplink wireless transmission parameter, working frequency band of reported downlink channel parameter and / or uplink wireless transmission parameter, frequency domain granularity for reporting downlink channel parameter and / or uplink wireless transmission parameter, reporting mode, whether compressed reporting is supported, compression mode, and second resource. Among them, the downlink reference signal resource is used for the terminal to perform downlink channel measurement; the first time unit is used to indicate the uplink wireless transmission parameter value used when performing uplink transmission in the first time unit; the reporting mode includes periodic reporting, non-periodic reporting, or semi-persistent scheduling reporting; and the second resource is used to carry the downlink channel parameter measurement amount and / or the uplink wireless transmission parameter used.

[0042] In one possible design, 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 wireless channel parameters and / or wireless transmission parameters of the at least one third geographical area.

[0043] In one possible design, the fifth information is used to provide feedback on the credibility of wireless channel parameters for each first path in the third geographical area, where the wireless environment map parameters used by the terminal include the wireless channel parameters for each first path. And / or, the fifth information is used to provide feedback on the credibility of wireless channel parameters for each first frequency domain subband in the third geographical area, where the wireless environment map parameters used by the terminal include the wireless channel parameters for each first frequency domain subband.

[0044] In one possible design, when the fifth information is used to feedback the credibility of the wireless channel parameters of each first path in the third geographical area, the method also includes: receiving sixth information, the sixth information is used to feedback the credibility 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.

[0045] In one possible design, the fifth information is used to feed back 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.

[0046] In one possible design, the 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 the at least one fourth geographical area are invalid.

[0047] Among them, the technical effects brought about by any possible design of the second aspect can refer to the technical effects brought about by the corresponding design in the first aspect, and will not be repeated here.

[0048] In combination with the first aspect or the second aspect, in one possible design, the information of the geographical area includes at least one of the following: an identifier of the geographical area, the coordinates of the center position of the geographical area, and the spatial resolution of the geographical area.

[0049] In combination with the first aspect or the second aspect, in one possible design, the first information further includes the credibility of the wireless environment map parameter. Exemplarily, the credibility of the wireless environment map parameter is used to reflect (or characterize) the communication quality when communicating according to the wireless environment map parameter.

[0050] In combination with the first aspect or the second aspect, in one 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.

[0051] In combination with the first aspect or the second aspect, in one 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 indication PMI, beam indication, and reference signal receiving power.

[0052] In combination with the first aspect or the second aspect, in one possible design, the type of the wireless environment map parameter includes a true value or a predicted value.

[0053] In a third aspect, a communication device is provided for implementing various methods. The communication device includes modules, units, or means corresponding to the methods, wherein the modules, units, or means can be implemented in hardware, software, or by hardware executing corresponding software implementations. The hardware or software includes one or more modules or units corresponding to the functions.

[0054] In some possible designs, the communication device may include a processing module and a transceiver module. The processing module may be configured to implement the processing functionality of any of the above aspects and any possible implementations thereof. The transceiver module may include a receiving module and a transmitting module, respectively configured to implement the receiving functionality and the transmitting functionality of any of the above aspects and any possible implementations thereof.

[0055] In some possible designs, the transceiver module may be composed of a transceiver circuit, a transceiver, a transceiver or a communication interface.

[0056] In one possible design, when the communication device is used to implement the method described in the first aspect and any possible design thereof:

[0057] A processing module is configured to obtain first information; a transceiver module is configured to communicate based on the first information. The first information includes information about at least one geographic area and wireless environment map parameters for at least one geographic area, wherein the wireless environment map parameters include wireless channel parameters and / or wireless transmission parameters associated with the wireless channel parameters. The first information also includes at least one of the following: an operating frequency band of the wireless environment map parameter, an indication of whether the wireless environment map parameter is valid, and a type of the wireless environment map parameter, wherein the type of the wireless environment map parameter indicates whether the wireless environment map parameter is true.

[0058] Optionally, the processing module is used to obtain the first information, including: a processing module is used to send second information through the transceiver module, the second information is used to request wireless environment map parameters of at least one geographical area; the processing module is also used to receive the first information through the transceiver module.

[0059] Optionally, the second information includes at least one of the following: location information of the terminal, information indicating the first range, and an identifier of at least one geographical area, where the at least one geographical area is a geographical area in the first range.

[0060] Optionally, the second information also includes at least one of the following: a requested working frequency band of the wireless environment map parameter, a requested wireless channel parameter, and a requested wireless transmission parameter.

[0061] Optionally, at least one geographical area includes at least one first geographical area, and the transceiver module is also used to send third information, and the third information is used to request to update the wireless environment map parameters of at least one first geographical area; the transceiver module is also used to receive fourth information, and the fourth information is used to indicate that the wireless environment map parameters of part or all of the first geographical areas in at least one first geographical area are allowed to be updated; the transceiver module is also used to send the updated wireless environment map parameters of part or all of the first geographical areas.

[0062] Optionally, the third information includes 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 a wireless environment map parameter requested to be updated, a wireless channel parameter requested to be updated, and a wireless transmission parameter requested to be updated. The at least one first geographical area is a geographical area within the second range.

[0063] Optionally, the fourth information is used to indicate that updating of the wireless environment map parameters of part or all of at least one first geographical area is allowed, including: the fourth information is used to indicate the first resource, and the first resource is used to carry the updated wireless environment map parameters of part or all of the first geographical area.

[0064] Optionally, at least one geographical area includes at least one second geographical area, and the transceiver module is further used to send downlink channel parameter measurement quantities 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 transceiver module is also used to send the downlink channel parameter measurement amount measured in at least one second geographical area, and / or the uplink wireless transmission parameters used in at least one second geographical area, including: the transceiver module is also used to receive first configuration information, the first configuration information is used to configure the terminal to report the downlink channel parameter measurement amount and / or the uplink wireless transmission parameters used; the transceiver module is also used to send the downlink channel parameter measurement amount measured in at least one second geographical area, and / or the uplink wireless transmission parameters used in at least the second geographical area according to the first configuration information.

[0066] Optionally, the first configuration information is used to configure the terminal to report the downlink channel parameter measurement amount and / or the uplink wireless transmission parameter used, including: the first configuration information is used to configure at least one of the following: downlink reference signal resources, reported downlink channel measurement amount, first time unit, reported uplink wireless transmission parameter, working frequency band of reported downlink channel parameter and / or uplink wireless transmission parameter, frequency domain granularity for reporting downlink channel parameter and / or uplink wireless transmission parameter, reporting method, whether compressed reporting is supported, compression method, and second resource. Among them, the downlink reference signal resource is used for the terminal to perform downlink channel measurement; the first time unit is used to indicate the uplink wireless transmission parameter value used when performing uplink transmission in the first time unit; the reporting method includes periodic reporting, non-periodic reporting, or semi-persistent scheduling reporting; and the second resource is used to carry the downlink channel parameter measurement amount and / or the uplink wireless transmission parameter used.

[0067] Optionally, the at least one geographical area includes at least one third geographical area, and the transceiver module is further used to send fifth information, and the fifth information is used to feedback the credibility of the wireless channel parameters and / or wireless transmission parameters of the at least one third geographical area.

[0068] Optionally, the fifth information is used to provide feedback on the credibility of the wireless channel parameters of each first path in the third geographic area, where the wireless environment map parameters used by the terminal include the wireless channel parameters of each first path. And / or, the fifth information is used to provide feedback on the credibility of the wireless channel parameters of each first frequency domain subband in the third geographic area, where the wireless environment map parameters used by the terminal include the wireless channel parameters of each first frequency domain subband.

[0069] Optionally, the fifth information is used to feedback the credibility of the wireless channel parameters of each first path in the third geographical area. The transceiver module is also used to send sixth information. The sixth information is used to feedback the credibility of each first wireless channel parameter of each first path. The wireless environment map parameters used by the terminal include each first wireless channel parameter of each first path.

[0070] Optionally, the fifth information is used to feed back 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.

[0071] Optionally, the at least one geographical area includes at least one fourth geographical area, and the transceiver module is further used 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.

[0072] 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 based on the channel measurement result.

[0073] In one possible design, when the communication device is used to implement the method described in the second aspect and any possible design thereof:

[0074] A processing module is configured to obtain first information, and a transceiver module is configured to communicate based on the first information. The first information includes information about at least one geographic area and wireless environment map parameters for at least one geographic area, wherein the wireless environment map parameters include wireless channel parameters and / or wireless transmission parameters associated with the wireless channel parameters. The first information also includes at least one of the following: an operating frequency band of the wireless environment map parameter, an indication of whether the wireless environment map parameter is valid, and a type of the wireless environment map parameter, wherein the type of the wireless environment map parameter is used to indicate whether the wireless environment map parameter is true.

[0075] Optionally, the processing module is used to obtain the first information, including: a processing module is used to send second information through the transceiver module, the second information is used to request wireless environment map parameters of at least one geographical area; the processing module is also used to receive the first information through the transceiver module.

[0076] Optionally, the second information includes an identifier of a first cell managed by the RAN node, and the at least one geographical area includes a geographical area in the first cell.

[0077] Optionally, the second information also includes at least one of the following: a requested working frequency band of the wireless environment map parameter, a requested wireless channel parameter, and a requested wireless transmission parameter.

[0078] Optionally, at least one geographical area includes at least one first geographical area, and the transceiver module is also used to receive third information, and the third information is used to request to update the wireless environment map parameters of at least one first geographical area; the transceiver module is also used to send fourth information, and the fourth information is used to indicate that the wireless environment map parameters of part or all of the first geographical areas in at least one first geographical area are allowed to be updated; the transceiver module is also used to receive the updated wireless environment map parameters of part or all of the first geographical areas.

[0079] Optionally, the third information includes 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 a wireless environment map parameter requested to be updated, a wireless channel parameter requested to be updated, and a wireless transmission parameter requested to be updated. The at least one first geographical area is a geographical area within the second range.

[0080] Optionally, the fourth information is used to indicate that updating of the wireless environment map parameters of part or all of at least one first geographical area is allowed, including: the fourth information is used to indicate the first resource, and the first resource is used to carry the updated wireless environment map parameters of part or all of the first geographical area.

[0081] Optionally, at least one geographical area includes at least one second geographical area, and the transceiver module is further used to receive downlink channel parameter measurement quantities measured in at least one second geographical area, and / or uplink wireless transmission parameters used in at least one second geographical area.

[0082] Optionally, the transceiver module is further configured to send first configuration information, where the first configuration information is used to configure the terminal to report downlink channel parameter measurement values ​​and / or uplink wireless transmission parameters to be used.

[0083] Optionally, the first configuration information is used to configure the terminal to report the downlink channel parameter measurement amount and / or the uplink wireless transmission parameter used, including: the first configuration information is used to configure at least one of the following: downlink reference signal resources, reported downlink channel measurement amount, first time unit, reported uplink wireless transmission parameter, working frequency band of reported downlink channel parameter and / or uplink wireless transmission parameter, frequency domain granularity for reporting downlink channel parameter and / or uplink wireless transmission parameter, reporting method, whether compressed reporting is supported, compression method, and second resource. Among them, the downlink reference signal resource is used for the terminal to perform downlink channel measurement; the first time unit is used to indicate the uplink wireless transmission parameter value used when performing uplink transmission in the first time unit; the reporting method includes periodic reporting, non-periodic reporting, or semi-persistent scheduling reporting; and the second resource is used to carry the downlink channel parameter measurement amount and / or the uplink wireless transmission parameter used.

[0084] Optionally, the at least one geographical area includes at least one third geographical area, and the transceiver module is further used to receive fifth information, and the fifth information is used to feedback the credibility of the wireless channel parameters and / or wireless transmission parameters of the at least one third geographical area.

[0085] Optionally, the fifth information is used to provide feedback on the credibility of the wireless channel parameters of each first path in the third geographic area, where the wireless environment map parameters used by the terminal include the wireless channel parameters of each first path. And / or, the fifth information is used to provide feedback on the credibility of the wireless channel parameters of each first frequency domain subband in the third geographic area, where the wireless environment map parameters used by the terminal include the wireless channel parameters of the first frequency domain subband.

[0086] Optionally, when the fifth information is used to feedback the credibility of the wireless channel parameters of each first path in the third geographical area, the transceiver module is also used to receive sixth information, and the sixth information is used to feedback the credibility 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.

[0087] Optionally, the fifth information is used to feed back 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.

[0088] Optionally, the at least one geographical area includes at least one fourth geographical area, and the transceiver module is further used 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.

[0089] Optionally, the information of the geographical area includes at least one of the following: an identifier of the geographical area, coordinates of a center position of the geographical area, and a spatial resolution of the geographical area.

[0090] 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.

[0091] 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.

[0092] 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 indication PMI, beam indication, and reference signal receiving power.

[0093] Optionally, the type of the wireless environment map parameter includes a true value or a predicted value.

[0094] In a fourth aspect, a communication device is provided, comprising: a processor and a memory; the memory is used to store computer instructions, and when the processor executes the instructions, the communication device executes the method described in any one of the aspects.

[0095] In a fifth aspect, a communication device is provided, comprising: a processor and a communication interface; the communication interface is used to communicate with a module outside the communication device; the processor is used to execute a computer program or instruction so that the communication device executes the method described in any aspect.

[0096] In a sixth aspect, a communication device is provided, comprising: at least one processor; the processor is configured to execute a computer program or instruction stored in a memory, so that the communication device performs the method described in any one of the aspects. The memory may be coupled to the processor, or may be independent of the processor.

[0097] In a seventh aspect, a communication device is provided (for example, the communication device may be a chip or a chip system), which includes a processor for implementing the functions involved in either the first aspect or the second aspect.

[0098] In some possible designs, the communication device includes a memory for storing necessary program instructions and data.

[0099] In some possible designs, when the device is a chip system, it can be composed of a chip or include a chip and other discrete devices.

[0100] In one possible design, the communication device described in aspects 3 to 7 may be the terminal in aspect 1, 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 aspect 2, or a device included in the RAN node, such as a chip or a chip system.

[0101] In an eighth aspect, a communication device is provided, which may be a terminal, or a module or unit (for example, a chip, or a chip system, or a circuit) in the terminal that corresponds one-to-one to the method / operation / step / action described in the first aspect, or a module or unit that can be used in conjunction 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) in the RAN node that corresponds one-to-one to the method / operation / step / action described in the second aspect, or a module or unit that can be used in conjunction with the RAN node.

[0102] It can be understood that when the communication device provided in any one of the third to eighth aspects is a chip, the sending action / function of the communication device can be understood as output information, and the receiving action / function of the communication device can be understood as input information.

[0103] In the ninth aspect, a computer-readable storage medium is provided, which stores a computer program or instruction. When the computer-readable storage medium is run on a communication device, the communication device can execute the method described in any one of the first aspect or the second aspect.

[0104] In a tenth aspect, a computer program product comprising instructions is provided, which, when executed on a communication device, enables the communication device to execute the method described in any one of the first aspect or the second aspect.

[0105] In an eleventh aspect, a communication system is provided, which may include a terminal and a RAN node. The terminal is configured to implement the method described in the first aspect and any one of its designs, and the RAN node is configured to implement the method described in the second aspect and any one of its designs.

[0106] Among them, the technical effects brought about by any design method in the third aspect to the eleventh aspect can refer to the technical effects brought about by different design methods in the first aspect or the second aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0107] FIG1 is a schematic diagram of power consumption of a terminal provided by the present application;

[0108] FIG2 is a schematic diagram of resource overhead for beam scanning provided by this application;

[0109] FIG3 is a schematic diagram of the structure of a communication system provided by the present application;

[0110] FIG4 is a schematic diagram of a parameter determination process provided by the present application;

[0111] Figures 5 to 7 are flowcharts of the communication method provided by this application;

[0112] FIG8 is a schematic diagram of a method for updating wireless environment map parameters provided by the present application;

[0113] Figures 9 and 10 are flowcharts of the communication method provided by this application;

[0114] FIG11 is a schematic structural diagram of a communication device provided by the present application;

[0115] FIG12 is a schematic structural diagram of another communication device provided by the present application;

[0116] FIG13 is a schematic structural diagram of another communication device provided in this application. DETAILED DESCRIPTION

[0117] 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; "and / or" in this application is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural.

[0118] In the description of this application, unless otherwise specified, "plurality" means two or more than two. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or plural.

[0119] In addition, to facilitate the clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, the words "first" and "second" are used to distinguish between identical or similar items with substantially the same functions and effects. Those skilled in the art will understand that the words "first" and "second" do not limit the quantity or execution order, and the words "first" and "second" do not necessarily mean different.

[0120] In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner to facilitate understanding.

[0121] It will be understood that the “embodiment” mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment 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 embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It will be understood that in the various embodiments of the present application, the size of the sequence number of each process does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present application.

[0122] It can be understood that in this application, "when" and "if" both mean that corresponding processing will be taken under certain objective circumstances, and do not limit the time, nor do they require any judgment action when implementing, nor do they mean that there are other limitations.

[0123] It is understood that some optional features in the embodiments of the present application may, in certain scenarios, be implemented independently of other features, such as the solution on which they are currently based, to solve corresponding technical problems and achieve corresponding effects. They may also be combined with other features in certain scenarios as needed. Accordingly, the devices provided in the embodiments of the present application may also implement these features or functions accordingly, which will not be described in detail here.

[0124] In this application, unless otherwise specified, the same or similar parts between the various embodiments can refer to each other. In the various embodiments of this application, unless otherwise specified and there is no logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced to each other, and the technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships. The following description of the embodiments of this application does not constitute a limitation on the scope of protection of this application.

[0125] In traditional mobile communication networks, before a transmitter and receiver communicate, they typically measure channel characteristics based on a pilot channel and select appropriate transmit and receive parameters based on the measurement results. However, with the development of mobile communication networks, channel bandwidths, antenna arrays, and transmission channels continue to increase. The traditional method of obtaining wireless channel characteristics by measuring pilot signals faces significant challenges:

[0126] Because the transceiver needs to frequently perform channel measurements to obtain channel information, this increases the power consumption of the transceiver devices. Furthermore, these frequent measurements prevent the devices from entering a deep sleep state to save energy. For example, the beam scanning measurement power consumption on the terminal side increases to over 30%.

[0127] As shown in Figure 1, the power consumption of the physical downlink shared channel (PDSCH), physical downlink control channel (PDCCH)-only, sleep, wake-up signal (WUS), synchronization signal / PBCH block (SSB), and CSI-RS on the terminal side are 2.75%, 13.80%, 52.45%, 0.50%, and 30.50%, respectively.

[0128] Furthermore, as bandwidth increases, the transmission overhead of pilot signals increases dramatically, reducing resources available for data transmission and deteriorating communication performance. Taking millimeter-wave beam scanning as an example, as the size of the base station array increases, the Channel State Information-Reference Signal (CSI-RS) pilot overhead required for analog beam scanning increases to over 20% of system resources, as shown in Figure 2.

[0129] As shown in Figure 2, when the beam scanning period is 20 milliseconds, the pilot overhead in the 1024-array (256 beams), 2048-array (512 beams), and 4096-array (1024 beams) scenarios occupies 7.14%, 14.29%, and 28.57% of system resources, respectively. When the beam scanning period is 40 ms, the pilot overhead in the 1024-array (256 beams), 2048-array (512 beams), and 4096-array (1024 beams) scenarios occupies 3.57%, 7.14%, and 14.29% of system resources, respectively.

[0130] Based on this, the present application provides a communication method, in which a terminal or base station can pre-acquire wireless channel parameters and / or wireless transmission parameters of at least one geographical area. When subsequently communicating in a certain geographical area, the wireless channel parameters and / or wireless transmission parameters of the geographical area can be searched, thereby communicating based on the wireless channel parameters and / or wireless transmission parameters of the geographical area. Exemplarily, the wireless channel parameters and / or wireless transmission parameters of the geographical area can be predicted based on the perceived and reconstructed physical environment information. Compared to the traditional method of acquiring wireless channel parameters and wireless transmission parameters entirely based on pilot measurements, this method can save power consumption and system overhead.

[0131] The technical solutions of the embodiments of the present application can be used in various communication systems, which may be third generation partnership project (3GPP) communication systems, for example, fourth generation (4G) systems such as long term evolution (LTE) systems, 5G systems such as new radio (NR) systems, systems with hybrid LTE and 5G networking, non-terrestrial networks (NTN), or other next generation communication systems such as sixth generation (6G) communication systems. The communication system may also be a non-3GPP communication system without limitation.

[0132] Exemplarily, some nodes in the communication system may have communication functions and perception functions, or the communication system may be an integrated sensing and communication (ISAC) system, also known as an integrated synaesthesia system or a joint communications and sensing (JCS / JCAS) system.

[0133] Perception, also known as wireless sensing, involves emitting electromagnetic energy into space. By receiving radio waves reflected from objects within that space, information about the object can be calculated. This information can include parameters such as position, direction, altitude, speed, size, and path of motion. It can also detect the internal and external shape and structure of an object. By exploring the transmission, echo, reflection, and scattering of radio waves, one can perceive and better understand the physical world. As a form of electromagnetic wave sensing technology, wireless sensing technology, due to its penetrating and secure nature, is an important alternative for security inspections, hidden object detection, and environmental reconstruction.

[0134] In an ISAC system, widely deployed communication nodes, such as wireless network nodes (base stations or terminals), offer enhanced perception capabilities due to their wider operating bandwidths, higher frequency bands, and larger antenna arrays. This significantly improves the accuracy and feasibility of wireless network environmental perception. Furthermore, the perception results of wireless network nodes can be used to reconstruct the physical environment. This reconstructed physical environment can then be used to predict the electromagnetic wave transmission characteristics between wireless network nodes, thereby facilitating communication.

[0135] Among them, the above-mentioned communication system applicable to this application is only an example, and the communication system applicable to this application is not limited to this. The communication system provided by this application does not impose any limitations on the solution of this application. It is uniformly explained here and will not be repeated below.

[0136] Figure 3 shows a possible, non-limiting system diagram. As shown in Figure 3, 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 310a and 310b in Figure 3, collectively referred to as 310) and at least one terminal (320a-320j in Figure 3, collectively referred to as 320). The RAN 300 may also include other RAN nodes, such as wireless relay equipment and / or wireless backhaul equipment (not shown in Figure 3). The terminal 320 is connected to the RAN node 310 wirelessly. The RAN node 310 is connected to the core network 400 wirelessly or by wire. The core network equipment in the core network 400 and the RAN node 310 in the RAN 300 can be different physical devices, or they can be the same physical device that integrates the core network logical functions and the radio access network logical functions.

[0137] The RAN 300 may be a 3GPP-related cellular system, such as a 4G or 5G mobile communication system, or a future-oriented evolutionary system (such as a 6G mobile communication system). The RAN 300 may also be an open access network (O-RAN or ORAN), a cloud radio access network (CRAN), or a wireless fidelity (WiFi) system. The RAN 300 may also be a communication system that integrates two or more of the above systems.

[0138] The RAN node 310, which may also sometimes be referred to as access network equipment, RAN entity or access node, etc., constitutes a part of the communication system to help terminals achieve wireless access. The multiple RAN nodes 310 in the communication system 30 may be nodes 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, the network element 320i in Figure 3 may be a helicopter or a drone, which may 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 referred to as communication devices. For example, the network elements 310a and 310b in Figure 3 may be understood as communication devices with base station functions, and the network elements 320a-320j may be understood as communication devices with terminal functions.

[0139] In one possible scenario, a RAN node may 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. A RAN node may be a macro base station (such as 310a in FIG3 ), a micro base station or an indoor station (such as 310b in FIG3 ), a relay node or a donor node, or a wireless controller in a CRAN scenario. Optionally, a RAN node may also be a server, a wearable device, a vehicle, or an onboard device. For example, an access network device in vehicle-to-everything (V2X) technology may be a road side unit (RSU). All or part of the functions of a 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). A RAN node in this application may also be a logical node, a logical module, or software that implements all or part of the functions of a RAN node.

[0140] In another possible scenario, multiple RAN nodes collaborate 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 can be a centralized unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU). The CU and DU can be set separately, or they can be included in the same network element, such as a baseband unit (BBU). The RU can be included in a radio frequency device or radio frequency unit, such as a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH).

[0141] In different systems, 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, CU may also be called O-CU (Open CU), DU may also be called O-DU, CU-CP may also be called O-CU-CP, CU-UP may also be called O-CU-UP, and RU may also be called O-RU. For the convenience of description, this application uses CU, CU-CP, CU-UP, DU and RU as examples for description. Any unit of CU (or CU-CP, CU-UP), DU and RU in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0142] A terminal may also be referred to as a terminal device, user equipment (UE), mobile station, mobile terminal, etc. Terminals can be widely used 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, telemedicine, smart grid, smart furniture, smart office, smart wearable, smart transportation, smart city, etc. A terminal may be a mobile phone, tablet computer, computer with wireless transceiver function, wearable device, vehicle, drone, helicopter, airplane, ship, robot, robotic arm, smart home device, etc. The embodiments of the present application do not limit the device form of the terminal.

[0143] It should be noted that the communication system described in the embodiment of the present application is intended to more clearly illustrate the technical solution of the embodiment of the present application, and does not constitute a limitation on the technical solution provided in the embodiment of the present application. Ordinary technicians in this field can know that with the evolution of network architecture and the emergence of new business scenarios, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems.

[0144] The following describes the communication method provided in the embodiments of the present application, taking the interaction between a terminal and a RAN node as an example, in conjunction with the communication system shown in Figure 3. It should be noted that in the following embodiments of the present application, the message names, parameter names, or information names between the terminal and the RAN node are merely examples, and other names may be used in other embodiments, and the method provided in the present application is not specifically limited to this.

[0145] It is understood that in the embodiments of the present application, the terminal or RAN node may perform some or all of the steps in the embodiments of the present application. These steps or operations are merely examples, and the embodiments of the present application may also perform other operations or variations of various operations. In addition, the various steps may be performed in a different order than those presented in the embodiments of the present application, and it is possible that not all operations in the embodiments of the present application need to be performed.

[0146] It is understandable that this application uses the RAN node and the terminal as examples to illustrate the execution entities of the interaction diagram, but this application does not limit the execution entities of the interaction diagram. 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, chip system, or processor), and can also be implemented by a logical node, logical module, or software that can implement all or part of the RAN node functions; the method executed by the terminal in this application can also be executed by a module applied to the terminal (such as a chip, chip system, or processor), and can also be implemented by a logical node, logical module, or software that can implement all or part of the terminal functions.

[0147] In addition, in this application, "sending information" can be understood as one device sending information to another device, or as one logic module within a device sending information to another logic module. For example, "a terminal sending information" can be understood as a terminal sending information to another device (such as a RAN node), or as logic module 1 (such as a processing module) in a terminal sending information to logic module 2 (such as a transceiver module) in the terminal.

[0148] In this application, "receiving information" can be understood as one device receiving information from another device, or it can also be understood as a logic module within a device receiving information from another logic module. For example, "a terminal receiving information" can be understood as the terminal receiving information from another device (such as a RAN node), or it can be understood as logic module 1 (such as a processing module) in the terminal receiving information from logic module 2 (such as a transceiver module) in the terminal.

[0149] In this application, "sending information to... (e.g., a RAN node)" or the related illustrations in the accompanying drawings can be understood as the destination end of the information being the RAN node. This can include sending information to the RAN node directly or indirectly. "Receiving information from... (e.g., a RAN node)" or "receiving information from... (e.g., a RAN node)" or "receiving information sent by (e.g., a RAN node)", or the related illustrations in the accompanying drawings can be understood as the source end of the information being the RAN node, which can include receiving information directly or indirectly from the RAN node. The information may undergo necessary processing between the source and destination ends of the information transmission, such as format changes, but the destination end can understand the valid information from the source end. Similar expressions in this application can be understood similarly and will not be repeated here.

[0150] In order to facilitate understanding of the technical solutions of the embodiments of the present application, before introducing the communication method provided by the present application, an introduction to the information set (or information group or other names) of the geographical area provided by the present application is first given.

[0151] In one 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 3D grid, a grid, etc. This application does not specifically limit the name of the geographic region. Furthermore, a geographic region may also be a planar region, which is not specifically limited in this application.

[0152] As a possible implementation, a geographic region may have at least one of the following attributes: shape, outline, size, radius, area, geographic location, altitude, etc. The shapes, outlines, sizes, radii, and areas of different geographic regions may be the same or different. Different geographic regions may have different geographic locations. Different geographic regions may or may not overlap.

[0153] As a possible implementation, the outline of a geographic area and points in the geographic area can 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.

[0154] As a possible implementation, the shape of the geographical area may be a regular hexagon, or other shapes such as a regular pentagon, a circle, an ellipse, etc. Alternatively, the shape of the geographical area may be an irregular shape, which is not limited.

[0155] As a possible implementation, multiple geographic regions can be divided on the earth and indexed (e.g., numbered) for each of the multiple geographic regions. For example, the geographic location of a certain geographic region is determined by an identifier of the geographic region, that is, the geographic location of the geographic region can be obtained based on the identifier of the geographic region, or in other words, there is an association between the identifier of the geographic region and the geographic location of the geographic region. For example, multiple geographic regions can be discretized on the earth, each of which corresponds to an identifier, and the geographic location of the geographic region can be obtained based on the identifier of the geographic region.

[0156] The geographical area information set includes geographical area information and wireless environment map parameters of the geographical area. The wireless environment map parameters can also be called wireless environment map information. Of course, the wireless environment map parameters can also have other names, which are not limited in this application.

[0157] The information of a geographical area may also be referred to as description information or indication information of the geographical area, and is used to indicate or identify the geographical area. The information of the geographical area may include at least one of the following: an identifier (ID) of the geographical area, coordinates of the center location of the geographical area, or spatial resolution of the geographical area.

[0158] Exemplarily, the identifier of a geographic area is used to uniquely identify the geographic area. The coordinates of the center position of the geographic area are coordinates in a three-dimensional coordinate system (such as the ECEF coordinate system, the geodetic coordinate system, or the ECI coordinate system), which can be expressed as (X, Y, Z). The spatial resolution of the geographic area can indicate the size or area of ​​the geographic area, for example, it can be expressed as a*b*c. a can be a value on the x-axis of the three-dimensional coordinate system, indicating the length of the geographic area in the x-axis direction; b can be a value on the y-axis of the three-dimensional coordinate system, indicating the length of the geographic area in the y-axis direction; c can be a value on the z-axis of the three-dimensional coordinate system, indicating the length of the geographic area in the z-axis direction. The unit of spatial resolution can be meter (metre, m), of course, it can also be other length units without limitation.

[0159] The wireless environment map parameters of the geographical area include wireless channel parameters and / or wireless transmission parameters associated with the wireless channel parameters.

[0160] As a possible implementation, wireless channel parameters for a geographic area may refer to channel parameters of a signal transmitted from a transmitter and received within the geographic area after passing through the wireless environment. Wireless channel parameters may include time-domain channel parameters for each path in a multipath channel and / or frequency-domain channel parameters for at least one frequency-domain bandwidth. The frequency-domain bandwidth may be a frequency-domain subband or a frequency-domain wideband, without limitation.

[0161] Exemplarily, the frequency domain channel parameter may be a frequency domain channel response or a frequency domain channel coefficient. In the embodiment of the present application, the frequency domain channel response or the frequency domain channel coefficient may be represented by 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, Alternatively, the frequency domain channel response or the frequency domain channel coefficient may be represented by a quantized value, such as a eigenvector, a discrete Fourier transformation (DFT) vector, or the like.

[0162] Time domain channel parameters may include at least one of the following: channel multipath power (power), channel multipath delay (delay), channel multipath horizontal angle of arrival (AOA), channel multipath horizontal angle of departure (AOD), channel multipath vertical angle of arrival (ZOA), and channel multipath vertical angle of departure (ZOD). For example, if a multipath channel in a certain geographical area includes L paths, the wireless channel parameters of the geographical area can be expressed as: power1, delay1, AOA1, AOD1, ZOA1, ZOD1 power2, delay2, AOA2, AOD2, ZOA2, ZOD2 ... power L ,delay L ,AOA L ,AOD L ,ZOA L ,ZOD L

[0163] The subscripts 1, 2, ..., L represent the index of the path in the multipath channel.

[0164] Illustratively, power, delay, AOA, AOD, ZOA, ZOD, and frequency domain channel response may be collectively referred to as or constitute a full set of wireless channel parameters.

[0165] As a possible implementation, the wireless transmission parameters of a geographical area may refer to wireless transmission parameters required for communication within the geographical area. The wireless transmission reference may 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.

[0166] Exemplarily, MCS, uplink transmit power, uplink TA, PMI, beam indication, and parameter signal receiving power may be collectively referred to as or constitute a full set of wireless transmission parameters.

[0167] Optionally, the geographical area information set further includes at least one of the following: an operating frequency band of the wireless environment map parameter, an indication of whether the wireless environment map parameter is valid, and a type of the wireless environment map parameter. Furthermore, the geographical area information set may further include the credibility of the wireless environment map parameter.

[0168] As a possible implementation, the operating frequency band of the wireless environment map parameter can also be understood as the effective frequency band or application frequency band of the wireless environment map parameter. For the same geographical area, the wireless environment map parameter (the value) may be different in different frequency bands.

[0169] As a possible implementation, whether the wireless environment map parameter is valid can be understood as whether the wireless environment map parameter is available, or whether it can be used for communication. Exemplarily, whether the wireless environment map parameter is valid can be represented by On or Off, where On indicates valid and Off indicates invalid.

[0170] As a possible implementation, the type of the wireless environment map parameter is used to indicate whether the wireless environment map parameter is a ground truth value. Exemplarily, the type of the wireless environment map parameter may include a true value or a predicted value. The ground truth value may refer to a wireless channel parameter obtained through channel measurement and / or a wireless transmission parameter actually used during communication.

[0171] 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 in other words, the credibility of the wireless environment map parameters is used to reflect or characterize the communication quality or communication performance when communication is performed according to the wireless environment map parameters.

[0172] For example, 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 for a certain geographical area is high, it indicates that the RAN node or terminal has a high evaluation result of the wireless environment map parameters for the geographical area, that is, the communication quality or communication performance when using the wireless environment map parameters is good. Good communication performance can include a low bit error rate or a low number of retransmissions.

[0173] If the credibility level is low, it means that the RAN node or terminal has a low evaluation result for the wireless environment map parameters of the geographical area, that is, the communication quality or communication performance when using it 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.

[0174] In summary, the content and description of the geographical area information set can be shown in Table 1 below:

[0175] Table 1

[0176] In one possible implementation, the map corresponding to the physical environment can be understood as a physical environment map, which includes buildings, roads, objects, etc. The physical environment can also contain multiple nodes, such as base stations, terminals, TRPs, etc. Each node can obtain physical environment information in the following two ways:

[0177] Method A: Acquire physical environment information through multimodal sensing and positioning technology. For example, the physical environment information may include information about objects in the physical environment, such as location, shape, material, etc.

[0178] Method B: Based on artificial intelligence (AI) or machine learning (ML), physical environment information, such as the virtual TRP position, is inferred from channel measurement results.

[0179] Furthermore, the physical environment or physical environment map can be divided into multiple geographical areas. Based on the physical environment information in the geographical area, the wireless channel parameters and / or wireless transmission parameters of the geographical area are determined. Since the wireless channel parameters and / or wireless transmission parameters of the geographical area in the physical environment map are determined, the wireless channel parameters and / or wireless transmission parameters can also be understood as wireless environment map parameters.

[0180] One possible implementation of determining wireless channel parameters based on physical environment information can include using AI or machine learning methods to infer new wireless channel parameters by training on a known data set (including physical environment information and wireless channel parameters). Ray-tracing modeling can also be used to predict the multipath propagation characteristics of wireless signals in the physical environment to determine wireless channel parameters.

[0181] For wireless transmission parameters, the wireless transmission parameters can be calculated by analyzing the wireless channel parameters; or, based on the AL or ML method, new wireless transmission parameters can be inferred by training a known data set (including wireless channel parameters and wireless transmission parameters).

[0182] Exemplarily, when wireless channel parameters are determined based on wireless environment information and wireless transmission parameters are determined based on wireless channel parameters, as shown in FIG4 , it can be considered that wireless channel parameters are predicted based on physical environment information and wireless transmission parameters are predicted based on wireless channel parameters.

[0183] The following describes a communication method provided in an embodiment of the present application. Referring to FIG5(a), there is a flow chart of a communication method provided in an embodiment of the present application. The communication method may include the following steps:

[0184] S501: A first communication device obtains first information. Exemplarily, the first communication device may be a terminal or a RAN node.

[0185] The first information includes information of at least one geographical area and wireless environment map parameters of at least one geographical area. The wireless environment map parameters of the geographical area can be referred to the above related descriptions and will not be repeated here.

[0186] Furthermore, the first information also includes at least one of the following items for each geographical area in at least one geographical area: the operating frequency band of the wireless environment map parameter, an indication of whether the wireless environment map parameter is valid, the type and credibility of the wireless environment map parameter. Please refer to the above-mentioned relevant instructions and will not repeat them here.

[0187] S502: The first communication device communicates according to the first information.

[0188] Exemplarily, when the wireless environment map parameters include wireless channel parameters but do not include wireless transmission parameters, the first communication device can determine the wireless channel transmission parameters associated with the wireless channel parameters based on the wireless channel parameters of the geographical area where it is located, and then use the wireless channel transmission parameters for uplink and downlink transmission. Alternatively, when the wireless environment map parameters include wireless transmission parameters, the first communication device can directly use the wireless transmission parameters of the geographical area where it is located for uplink and downlink transmission. In this case, the wireless environment map parameters may include wireless channel parameters or may not include wireless channel parameters. In addition, the first communication device can select the valid wireless environment map parameters corresponding to the frequency band based on its own available frequency band for communication.

[0189] In a possible implementation, as shown in FIG5(b), in step S501, the first communication device acquiring the first information may include the following steps S5011 and S5012:

[0190] 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.

[0191] The second information is used to request wireless environment map parameters of at least one geographical area. Exemplarily, the second information can be used to request an initial download of wireless environment map parameters of at least one geographical area, or can be used to request an update download of wireless environment map parameters of at least one geographical area.

[0192] Optionally, the second information is used to request wireless environment map parameters for at least one geographical area, which can also be understood as: the second information is used to request part or all of the information in the information set of at least one geographical area. The information set of the geographical area can be referred to the relevant description above and will not be repeated here.

[0193] 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.

[0194] 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.

[0195] 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.

[0196] 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.

[0197] 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.

[0198] 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.

[0199] 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.

[0200] 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.

[0201] In a case where the second information includes location information of the terminal, the at least one geographical area includes a geographical area to which the location indicated by the location information of the terminal belongs.

[0202] When the second information includes information indicating the first range, the at least one geographical area is a geographical area within the first range. The geographical areas within the first range may or may not include the geographical area where the terminal is currently located. For example, if the terminal is able to predict its movement path, the first range indicated by the terminal may include the geographical area where the terminal may be located in the future.

[0203] For example, the information indicating the first range may be a geographic radius. After receiving the information, the second communication device may determine the first range based on the geographic radius, for example, the first range is a circular area centered at a certain location (such as the location of the terminal) and having the geographic radius as a radius.

[0204] In the case where the second information includes an identifier of at least one geographical area, the second information may include an identifier of the geographical area where the terminal is currently located, or an identifier of the geographical area and identifiers of the geographical areas surrounding it; or, the second information may include an identifier of the geographical area where the terminal may be located in the future, or an identifier of the geographical area and identifiers of the geographical areas surrounding it.

[0205] In the second possible implementation, the second information may be carried in radio resource control (RRC) signaling, media access control (MAC) signaling, or physical layer signaling.

[0206] In this second possible implementation, the information set of the geographical area maintained at the RAN node can be determined by the RAN node. The determination method can refer to the aforementioned relevant instructions and will not be repeated here; or, it can be requested by the RAN node to the central node, which is not limited.

[0207] S5012: The second communication device sends first information to the first communication device. Correspondingly, the first communication device receives the first information from the second communication device.

[0208] As a possible implementation, the second communication device may send a requested information set of part or all of the geographical area to the first communication device via the first information. The information set includes wireless environment map parameters and may further include at least one of an operating frequency band of the wireless environment map parameters, an indication of whether the wireless environment map parameters are valid, a type of the wireless environment map parameters, and a reliability of the wireless environment map parameters.

[0209] For example, taking the second information used to request wireless environment map parameters of geographic area 1, geographic area 2 and geographic area 3 as an example, the second communication device can send an information set of one or more geographic areas among geographic area 1, geographic area 2 and geographic area 3 to the first communication device.

[0210] In a possible implementation, when the first communication device is a terminal, after the terminal receives the first information, the effective time of the first information is:

[0211] 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 indicates 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 the time offset. Alternatively, the indication information is used to activate the first information or to trigger the effectiveness of the first information, i.e., the first information becomes effective after receiving the indication information. The indication information may be carried in Layer 1 or Layer 2 signaling.

[0212] As another possible implementation, after the terminal receives the first information, the first information takes effect immediately, that is, the first information takes effect at the time when the terminal receives the first information. Alternatively, the first information can take effect at the time determined by the terminal.

[0213] In one possible implementation, before sending the first information, the second communication device may also notify the first communication device whether it supports compression when sending the first information. If compression is supported, the second communication device may also send a compression method to the first communication device so that the first communication device can perform corresponding decompression.

[0214] 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 can be performed by the CU or the 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 can be performed by the DU or the O-DU.

[0215] 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.

[0216] The present application also provides a communication method, in which, after a terminal obtains wireless environment map parameters of at least one geographical area, the wireless environment map parameters can be updated. As shown in FIG6 , the communication method may include the following steps:

[0217] S601: A terminal sends third information to a RAN node. Correspondingly, the RAN node receives the third information from the terminal.

[0218] 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.

[0219] 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.

[0220] 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.

[0221] 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.

[0222] As a possible implementation, the third information is used to request updating of wireless environment map parameters of at least one first geographical area, which can also be understood as the third information being used to request correction / upload / upload / reporting of wireless environment map parameters of at least one first geographical area.

[0223] In one possible implementation, after receiving the third information, the RAN node may determine whether to allow the terminal to update the wireless environment map parameters of at least one first geographical area, or determine the first geographical area in which the wireless environment map parameters are allowed to be updated. If the RAN node does not allow the wireless environment map parameters of any first geographical area to be updated, the process ends, or information indicating that the wireless environment map parameters are not allowed to be updated is sent to the terminal. If the RAN node allows the wireless environment map parameters of some or all of the at least one first geographical area to be updated, steps S602-S603 are performed.

[0224] S602: The RAN node sends fourth information to the terminal. Correspondingly, the terminal receives the fourth information from the RAN node.

[0225] The fourth information is used to indicate that updating of the wireless environment map parameters of some or all of the first geographical areas in at least one first geographical area is permitted. The fourth information may explicitly or implicitly indicate that updating of the wireless environment map parameters of some or all of the first geographical areas is permitted. Exemplarily, there may be the following three implementation methods:

[0226] Mode 1: The fourth information is used to indicate the first resource. The first resource is used to carry updated radio environment map parameters of part or all of the first geographical area.

[0227] Exemplarily, the fourth information may include time domain position information of the first resource (such as the time domain starting position, the number of occupied time domain symbols), frequency domain position information (such as the frequency domain starting position), spatial domain resource information (such as antenna port), etc.

[0228] Mode 2: The fourth information is used to activate the first resource. The first resource is used to carry updated radio environment map parameters of part or all of the first geographical area.

[0229] In the second approach, the first resource may be pre-configured or semi-statically configured by the RAN node. After the terminal receives the fourth information, the first resource is activated, that is, the first resource becomes effective or available.

[0230] In the above-mentioned manner 1 and manner 2, it can be considered that the fourth information implicitly indicates that updating of the wireless environment map parameters of part or all of the first geographical area is allowed.

[0231] Mode 3: The fourth information indicates, through 1 bit whose value is the first value, that updating of the wireless environment map parameters of part or all of the first geographical area is permitted.

[0232] For example, a single bit may be defined to indicate whether updates to some or all of the wireless environment map parameters for the first geographic area are permitted. When the single bit is a first value, it indicates fourth information, indicating that updates are permitted; when the single bit is a second value, it indicates that updates are not permitted. The first value may be "1," and the corresponding second value may be "0," or the first value may be "0," and the corresponding second value may be "1."

[0233] In this third approach, the RAN node may also send additional information for indicating the first resource or activating the first resource. Please refer to the description in the above-mentioned first or second approach, which will not be repeated here.

[0234] In the above three methods, when the fourth information indicates that the wireless environment map parameters of some first geographical areas are allowed to be updated, the RAN node may further indicate to the terminal the first geographical areas that are allowed to be updated. For example, the RAN node indicates or sends to the terminal the identifiers of these first geographical areas in a bitmap manner.

[0235] S603: The terminal sends 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.

[0236] Exemplarily, the terminal sends the updated radio environment map parameters of the first geographical area on the first resource, and the RAN node receives the updated radio environment map parameters of the first geographical area from the terminal on the first resource.

[0237] As a possible implementation, the terminal updating the wireless environment map parameters of the first geographical area may include: the terminal updating the values ​​of some or all parameters in the wireless environment map parameters of the first geographical area. In this case, the updated wireless environment map parameters of the first geographical area include the updated parameter values.

[0238] As another possible implementation, the terminal divides the first geographical area into multiple smaller sub-areas and determines the wireless environment map parameters of each sub-area. In this case, the updated wireless environment map parameters of the first geographical area include the wireless environment map parameters of each sub-area in the first geographical area.

[0239] As a possible implementation, the terminal may update the radio environment map parameters of the first geographical area based on the downlink channel parameter measurement amount measured in the first geographical area and / or the uplink radio transmission parameters used in the first geographical area.

[0240] As a possible implementation, after determining the updated wireless environment map parameters of the first geographical area, the terminal uses the updated wireless environment map parameters of the 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.

[0241] Based on the above solution, the terminal can request to update the wireless environment map parameters, and send the updated wireless environment map parameters to the RAN node if the RAN node allows the update. This 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.

[0242] The solution shown in FIG6 above can be understood as the terminal reporting updated wireless environment map parameters to the RAN node. In addition, the present application also provides a communication method, in which, after obtaining the wireless environment map parameters of at least one geographical area, the terminal can report information used to update or calibrate 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 the information. As shown in FIG7, the method includes the following steps:

[0243] S701: The terminal sends truth value information to a RAN node. Correspondingly, the RAN node receives the truth value information from the terminal.

[0244] The true value information includes a downlink channel parameter measurement value measured in at least one second geographical area and / or an uplink wireless transmission parameter used in at least one second geographical area. The at least one second geographical area can be understood as a geographical area in which the terminal performs downlink channel measurement and / or uplink wireless transmission in the at least one geographical area.

[0245] Exemplarily, after obtaining the wireless environment map parameters for at least one geographical area, the terminal may perform downlink channel measurement in at least one second geographical area, thereby obtaining a downlink channel parameter measurement quantity (or measurement value) for the at least one second geographical area. And / or, the terminal may perform uplink wireless transmission in the at least one second geographical area, thereby obtaining the used uplink wireless transmission parameters (or uplink wireless transmission parameter values).

[0246] Exemplarily, the terminal may send RRC signaling, MAC signaling, or physical layer signaling to the RAN node, where the RRC signaling, MAC signaling, or physical layer signaling carries the true value information.

[0247] In a possible implementation, the terminal may report true value information based on the configuration of the RAN node. Exemplarily, as shown in FIG7 , before step S701 , the method further includes step S700 :

[0248] 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 step S701 above, the terminal sends true value information according to the first configuration information.

[0249] The first configuration information is used to configure the terminal to report downlink channel parameter measurement quantities and / or uplink wireless transmission parameters used. Exemplarily, the first configuration information can be carried in RRC signaling, MAC signaling, or physical layer signaling. The first configuration information can also be referred to as a ground truth report configuration.

[0250] 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 quantity, first time unit, reported uplink wireless transmission parameters, working frequency band of reported downlink channel parameters and / or uplink wireless transmission parameters, frequency domain granularity of reported downlink channel parameters and / or uplink wireless transmission parameters, reporting method, whether compressed reporting is supported, compression method, second resources, etc.

[0251] The downlink reference signal resource may include the time-frequency domain location of the reference signal, or the time-frequency domain location and port of the reference signal. This reference signal resource is used by the terminal to perform downlink channel measurement. That is, the terminal can measure the reference signal at the configured time-frequency domain location, and the measurement result is the measured downlink channel parameter measurement quantity. The reference signal may be, for example, a CSI-RS or a demodulation reference signal (DMRS).

[0252] The reported downlink channel parameters may indicate the type of downlink wireless channel parameters reported, such as whether time domain channel parameters or frequency domain channel parameters are fed back. Furthermore, the type of time domain channel parameters fed back (such as power, delay, AOA, AOD, ZOA, ZOD, etc.) may be indicated.

[0253] The first time unit is used to instruct the terminal to report the uplink wireless transmission parameter value used when performing uplink transmission in the first time unit. If the first configuration information does not configure the first time unit, in step S701, the terminal also reports the time unit corresponding to the uplink wireless transmission parameter value, which is used to indicate that the terminal is reporting the uplink wireless transmission parameter value used when performing uplink transmission in the time unit.

[0254] For example, the time unit in the present application may refer to an orthogonal frequency division multiplexing (OFDM) symbol, a time slot, a mini-time slot, a subframe, etc.

[0255] The reported uplink radio transmission parameter may refer to the type of uplink radio transmission parameter that the terminal needs to report.

[0256] Among them, the frequency domain granularity for reporting downlink channel parameters and / or uplink wireless transmission parameters can be sub-band or broadband, that is, instructing the terminal to report the downlink channel parameters and / or uplink wireless transmission parameters on each sub-band, or to report the downlink channel parameters and / or uplink wireless transmission parameters on the entire broadband.

[0257] Exemplarily, the downlink channel parameters and / or uplink radio transmission parameters on the broadband may be an average value of the downlink channel parameters and / or uplink radio transmission parameters on each sub-band in the broadband.

[0258] The reporting method may include periodic reporting (periodic), aperiodic reporting (aperiodic) or semi-persistent scheduling reporting (semiPersistent).

[0259] Whether compressed reporting is supported may refer to whether the RAN node supports the terminal to perform compression when reporting true value information. If compressed reporting is supported, the first configuration information may further include a compression method.

[0260] The second resource is used to carry the downlink channel parameter measurement value and / or the used uplink wireless transmission parameter.

[0261] In a possible implementation, after step S701, the method further includes the following steps:

[0262] S702: The RAN node updates the wireless environment map parameters according to the true value information.

[0263] Exemplarily, updating the wireless environment map parameters may also be understood as adjusting or fine-tuning or error correction of the wireless environment map parameters.

[0264] For example, as shown in FIG8 , the RAN node may use the true value information as a training parameter to train or fine-tune the AI ​​or ML model, thereby updating the wireless channel parameters and / or wireless transmission parameters of the geographical area.

[0265] It should be noted that this application does not limit the RAN node to updating the wireless environment map parameters of the second geographical area based only on the true value information. The RAN node can also update the wireless environment map parameters of other geographical areas based on the true value information. For example, in the update method shown in Figure 8, the RAN node trains the AI ​​or ML model based on the true value information, so that the wireless environment map parameters of other geographical areas can also be updated.

[0266] In addition, the terminal may also update the wireless environment map parameters based on the true value information. The updating method may refer to the method of updating the wireless environment map parameters by the RAN node in step S702 and is not limited.

[0267] The methods shown in Figures 6 and 7 can be considered as updating the wireless environment map parameters based on the true values ​​of the downlink channel parameters and / or uplink wireless transmission parameters. In addition, the update can also be based on the true values ​​of the uplink channel parameters and / or downlink wireless transmission parameters.

[0268] As a possible implementation, similar to the method shown in Figure 6, the RAN node can obtain the true value of the uplink channel parameters and / or downlink wireless transmission parameters, update the wireless environment map parameters based on the true value, and send the updated wireless environment map parameters to the terminal. The detailed implementation can be referenced to the method shown in Figure 6 and will not be repeated here.

[0269] As another possible implementation, similar to the method shown in Figure 7, the RAN node can send the true values ​​of uplink channel parameters and / or downlink wireless transmission parameters to the terminal. After receiving these true values, the terminal can update the wireless environment map parameters based on them. Furthermore, the RAN node can also locally update the wireless environment map parameters based on these true values. For detailed implementation, please refer to the method shown in Figure 7 and will not be further described here.

[0270] Based on this solution, the RAN node and / or terminal can update the wireless environment map parameters based on the measured amount of the channel parameters and / or the wireless transmission parameters used, so that the predicted wireless environment map parameters are closer to the true value, thereby improving the communication performance when using the wireless environment map parameters to assist communication.

[0271] The present application also provides a communication method, in which, after a terminal obtains wireless environment map parameters of at least one geographical area, it can provide feedback on the credibility of the wireless environment map parameters. As shown in FIG9 , the communication method may include the following steps:

[0272] S901: The terminal sends fifth information to a RAN node. Correspondingly, the RAN node receives the fifth information from the terminal.

[0273] The fifth information is used to feedback the credibility of the wireless channel parameters and / or wireless transmission parameters of at least one third geographical area. The at least one third geographical area can be understood as the geographical area in which the terminal communicates based on the wireless environment map parameters of the at least one geographical area.

[0274] It is understandable that the terminal may feed back to the RAN node the credibility of some or all of the radio channel parameters and / or the credibility of some or all of the radio transmission parameters in the third geographical area.

[0275] Exemplarily, the credibility of the wireless channel parameters and / or wireless transmission parameters of the third geographical area may be evaluated by evaluating the communication performance of the terminal when performing downlink communication in the third geographical area according to the wireless channel parameters and / or wireless transmission parameters.

[0276] In a possible implementation manner, when the fifth information is used to feedback the credibility of the wireless channel parameters of the third geographical area:

[0277] As a first possible implementation, the wireless channel of the third geographical area may be a multipath channel, and each path has corresponding wireless channel parameters, that is, the wireless channel parameters of the third geographical area include the wireless channel parameters of at least one path. For example, taking the multipath channel including L paths as an example, the wireless channel parameters of the third geographical area include the wireless channel parameters of path 1, path 2, ..., path L (such as power, delay, arrival angle, departure angle, etc.). At this time, the fifth information can be used to feedback the credibility of the wireless 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 wireless environment map parameters used by the terminal include the wireless channel parameters of the first path.

[0278] Exemplarily, taking L equal to 3 as an example, if the wireless environment map parameters used by the terminal during communication include wireless channel parameters of path 1 and path 2, the fifth information is used to feed back the credibility of the wireless channel parameters of path 1 and path 2.

[0279] Exemplarily, the terminal may provide feedback in the order of received wireless channel parameters for the multipath channels. For example, if the wireless channel parameters for the third geographical area received by the terminal are {wireless channel parameters for path 1, wireless channel parameters for path 2, wireless channel parameters for path 3}, the fifth information may include {wireless channel parameter credibility for path 1, wireless channel parameter credibility for path 2, NA}. NA indicates that the wireless channel parameters for path 3 are not used.

[0280] The reliability of the wireless channel parameters of path 1 and path 2 can be indicated by the value of at least one bit. For example, if the reliability is divided into high and low, the fifth information may include {1 / 0, 1 / 0, NA}. 1 and 0 respectively indicate that the reliability of the wireless channel parameters of the path is high and low. It is understood that if the reliability is divided into more than two levels, the reliability of the wireless channel parameters can be indicated by the value of at least two bits.

[0281] Alternatively, the terminal may carry the corresponding relationship between the path identifier and its credibility in the fifth information, for example, {path 1, credibility 1}, {path 2, credibility 2}. This application does not limit the specific format of the fifth information.

[0282] Optionally, when the wireless channel parameters include multiple parameters (such as power, delay, angle of arrival, angle of departure, etc.), the terminal may use some or all of these multiple parameters during communication. In this scenario, based on the fifth information, the terminal may also send sixth information to the RAN node, and the RAN node accordingly receives the sixth information from the terminal.

[0283] The sixth information is used to provide feedback on the credibility of each first wireless channel parameter of the first path. The first wireless channel parameter is a parameter of the first path used by the terminal, or the wireless environment map parameter used by the terminal during communication includes the first wireless channel parameter of the first path. The credibility feedback method for the first wireless channel parameter can refer to the credibility feedback method for the wireless channel parameter of the first path described above and is not further described here.

[0284] As a second possible implementation, the wireless channel parameters of the third geographic area may include wireless channel parameters for at least one frequency domain subband, and the fifth information may be used to provide feedback on the credibility of the wireless channel parameters for each first frequency domain subband. The wireless environment map parameters used by the terminal include the wireless channel parameters for the first frequency domain subband. The credibility feedback method for the wireless channel parameters of the first frequency domain subband can refer to the credibility feedback method for the wireless channel parameters of the first path described above and will not be further described here.

[0285] In a possible implementation, when the fifth information is used to feedback the credibility of the wireless transmission parameters of the third geographical area, the fifth information may be the same as the credibility of each first wireless transmission parameter of the third geographical area, where the first wireless transmission parameter is the wireless transmission parameter used by the terminal.

[0286] Exemplarily, the terminal may provide feedback in the order of received wireless transmission parameters. Taking the wireless transmission parameters for the third geographic area as an example, including {uplink MCS, uplink transmit power, uplink TA, PMI, and beam indication}, if the wireless transmission parameters used by the terminal are uplink MCS, uplink transmit power, and uplink TA, the fifth information may include {uplink MCS credibility, uplink transmit power credibility, uplink TA credibility, NA, NA}. NA, NA indicates that the PMI and beam indication are not used.

[0287] Alternatively, the terminal may carry the correspondence between the name of the wireless transmission parameter and its credibility in the fifth information, for example, {uplink MCS, credibility A}, {uplink transmit power, credibility B} and {uplink TA, credibility C}.

[0288] In a possible implementation, the terminal may feedback the credibility of the radio environment map parameters based on the configuration of the RAN node. For example, as shown in FIG9 , before step S901 , the method further includes step S900 :

[0289] 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 fifth information according to the second configuration information.

[0290] The second configuration information is used to configure the credibility of the terminal's feedback of the wireless environment map parameters. Exemplarily, the second configuration information can be carried in RRC signaling, MAC signaling, or physical layer signaling. The second configuration information can also be called credibility feedback configuration.

[0291] As a possible implementation, the second configuration information is used to configure at least one of the following: wireless channel parameters that require feedback credibility, wireless transmission parameters that require feedback credibility, feedback method, frequency band of wireless channel parameters and / or wireless transmission parameters that require feedback, third resources, etc.

[0292] The wireless channel parameter requiring feedback reliability may indicate the type of wireless channel parameter requiring feedback reliability. The wireless transmission parameter requiring feedback reliability may indicate the type of wireless transmission parameter requiring feedback reliability.

[0293] The feedback mode may include periodic feedback (periodic), aperiodic feedback (aperiodic) or semi-persistent scheduling feedback (semiPersistent).

[0294] The third resource is used to carry the credibility of the wireless environment map parameters.

[0295] In one possible implementation, after step S901, the RAN node may update the information set of the geographic area based on the fifth information. For example, if the reliability of the wireless environment map parameter of the third geographic area fed back by the terminal is high, the RAN node may set the reliability of the wireless environment map parameter to high and continue to maintain the information set of the third geographic area. If the reliability of the wireless environment map parameter of the third geographic area fed back by the terminal is low, the RAN node may trigger a correction, such as configuring the terminal to report true value information, to correct or update the wireless environment map parameter. Alternatively, the RAN node may delete the parameter with low reliability.

[0296] In addition, the RAN node may also evaluate the credibility of the wireless environment map parameters based on the communication performance when performing downlink communication based on the wireless environment map parameters, and update the geographical area information set based on the credibility. The RAN node may then send the updated geographical area information set to the terminal.

[0297] Based on this solution, terminals or RAN nodes can promptly evaluate the credibility of wireless environment map parameters, and thus perform relevant processing based on the credibility, such as triggering the correction or update of low-credibility parameters, or deleting low-credibility parameters and continuing to maintain high-credibility parameters, etc., to ensure that subsequent communications can use high-credibility or near-true wireless environment map parameters, thereby improving communication performance.

[0298] The present application also provides a communication method, in which, after a RAN node sends a wireless environment map parameter of at least one geographical area to a terminal, the wireless environment map parameter of at least one or some geographical areas may be invalidated. As shown in FIG10 , the communication method may include the following steps:

[0299] S1001: A RAN node sends seventh information to a terminal. Correspondingly, the terminal receives the seventh information from the RAN node.

[0300] The seventh information is used to indicate that wireless environment map parameters for at least one fourth geographical area are invalid. The at least one fourth geographical area is a region within the at least one geographical area. Exemplarily, the RAN node may send the seventh information if the reliability of the wireless environment map parameters for the fourth geographical area is low, or their accuracy is reduced and cannot assist communication, or if the wireless environment map parameters for the fourth geographical area cannot be corrected or updated.

[0301] 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 validity indication in the geographical area information set to Off.

[0302] Optionally, whether the wireless environment map parameter is valid can be set at the terminal level. For example, taking a wireless environment map parameter as an example, the wireless environment map parameter may be invalid for a certain terminal but valid for another terminal.

[0303] Alternatively, whether the wireless environment map parameter is valid is unified for all terminals under the RAN node. For example, a 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 parameter for the fourth geographical area is invalid, it may delete the locally maintained wireless environment map parameter for the fourth geographical area or the information set for the fourth geographical area.

[0304] In a possible implementation manner, after receiving the seventh information, the terminal may further perform the following step S1002:

[0305] S1002: When the terminal determines that it is communicating in at least one fourth geographical area, it falls back to a traditional communication mode, that is, it communicates in the fourth geographical area using the traditional communication mode.

[0306] Exemplarily, the traditional communication method can be understood as: when communicating, it is necessary to first perform channel measurement, and then communicate based on the channel measurement result.

[0307] Based on this solution, the RAN node can indicate to the terminal that the wireless environment map is invalid, thereby preventing the terminal from communicating based on an invalid or low-reliability wireless environment map, which would result in reduced communication performance.

[0308] It should be noted that the above-mentioned various communication methods can be executed independently of each other, or they can be combined with each other to form a new communication method. This application does not make specific limitations on this.

[0309] In one possible implementation, for the methods shown in Figures 6-10, in a CU-DU architecture or ORAN system, the functionality for interaction between the RAN node and the terminal may be implemented by the DU or O-DU. Information sent by the RAN node to the terminal may be generated by the DU or O-DU, or may be generated by the CU or O-CU and sent to the DU or O-DU. The processing functionality of the RAN node may be implemented by the CU or O-CU, or by the DU or O-DU, or jointly by the CU and DU (or O-CU and O-DU), without limitation.

[0310] The method provided in this application is described above. In addition, this application also provides a communication device for implementing the functions described in the above method embodiments.

[0311] It is understandable that, in order to realize the above functions, the communication device includes hardware structures and / or software modules corresponding to the execution of each function. It should be easily appreciated by those skilled in the art that, in combination with the units and algorithm steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0312] The embodiment of the present application can divide the functional modules of the communication device according to the above method embodiment. For example, each functional module can be divided according 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 embodiment of the present application is schematic and is only a logical functional division. In actual implementation, there may be other division methods.

[0313] Communication Device Figure 11 shows a schematic structural diagram of a communication device 110. 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-mentioned terminal or RAN node.

[0314] In some embodiments, the communication device 110 may further include a storage module (not shown in FIG. 11 ) for storing program instructions and data.

[0315] In some embodiments, the transceiver module 1102, which may also be referred to as a transceiver unit, is configured to implement a transmitting and / or receiving function. The transceiver module 1102 may be composed of a transceiver circuit, a transceiver, a transceiver, or a communication interface.

[0316] 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 performed by the terminal or RAN node in the above method embodiments, and / or used to support other processes of the technology described in this document; the processing module 1101 may be used to execute the processing steps performed by the terminal or RAN node in the above method embodiments, and / or used to support other processes of the technology described in this document.

[0317] When the communication device 110 is used to implement the functions of a terminal or a RAN node:

[0318] Processing module 1101 is used to obtain first information, the first information includes information of 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 also includes at least one of the following: an operating frequency band of the wireless environment map parameter, an indication of whether the wireless environment map parameter is valid, and a type of the wireless environment map parameter, the type of the wireless environment map parameter is used to indicate whether the wireless environment map parameter is a true value; transceiver module 1102 is used to communicate according to the first information.

[0319] Optionally, the processing module 1101 is used to obtain the first information, including: the processing module 1101 is used to send the second information through the transceiver module 1102, and the second information is used to request the wireless environment map parameters of at least one geographical area; the processing module 1101 is also used to receive the first information through the transceiver module 1102.

[0320] When the communication device 110 is used to implement the functions of a terminal:

[0321] Optionally, the transceiver module 1102 is also used to send third information, which is used to request an update of the wireless environment map parameters of at least one first geographical area; the transceiver module 1102 is also used to receive fourth information, which is used to indicate that the wireless environment map parameters of part or all of the first geographical areas in at least one first geographical area are allowed to be updated; the transceiver module 1102 is also used to send the updated wireless environment map parameters of part or all of the first geographical areas.

[0322] Optionally, the transceiver module 1102 is further configured to send a downlink channel parameter measurement value measured in at least one second geographical area, and / or an uplink wireless transmission parameter used in at least one second geographical area.

[0323] Optionally, the transceiver module 1102 is specifically used to receive first configuration information, where the first configuration information is used to configure the terminal to report the downlink channel parameter measurement amount and / or the uplink wireless transmission parameters used; and to send the downlink channel parameter measurement amount measured in at least one second geographical area, and / or the uplink wireless transmission parameters used in at least the second geographical area according to the first configuration information.

[0324] Optionally, the transceiver module 1102 is further configured to send fifth information, where the fifth information is used to provide feedback on the credibility of wireless channel parameters and / or wireless transmission parameters of at least one third geographical area.

[0325] Optionally, when the fifth information is used to feedback the credibility of the wireless channel parameters of each first path in the third geographical area, the transceiver module 1102 is also used to send sixth information, and the sixth information is used to feedback the credibility of each first wireless channel parameter of each first path.

[0326] Optionally, the transceiver module 1102 is further configured to receive seventh information, where the seventh information is used to indicate that a wireless environment map parameter of at least one fourth geographical area is invalid.

[0327] 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 result.

[0328] When the communication device 110 is used to implement the function of a RAN node:

[0329] Optionally, the transceiver module 1102 is also used to receive third information, which is used to request an update of the wireless environment map parameters of at least one first geographical area; the transceiver module 1102 is also used to send fourth information, which is used to indicate that the wireless environment map parameters of part or all of the first geographical areas in at least one first geographical area are allowed to be updated; the transceiver module 1102 is also used to receive the updated wireless environment map parameters of part or all of the first geographical areas.

[0330] Optionally, the transceiver module 1102 is further configured to receive a downlink channel parameter measurement value measured in at least one second geographical area, and / or an uplink wireless transmission parameter used in at least one second geographical area.

[0331] 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 a downlink channel parameter measurement value and / or an uplink wireless transmission parameter to be used.

[0332] Optionally, the transceiver module 1102 is further configured to receive fifth information, where the fifth information is used to feed back the credibility of wireless channel parameters and / or wireless transmission parameters of at least one third geographical area.

[0333] Optionally, when the fifth information is used to feedback the credibility of the wireless channel parameters of each first path in the third geographical area, the transceiver module 1102 is also used to receive sixth information, and the sixth information is used to feedback the credibility of each first wireless channel parameter of each first path.

[0334] Optionally, the transceiver module 1102 is further configured to receive seventh information, where the seventh information is used to indicate that a wireless environment map parameter of at least one fourth geographical area is invalid.

[0335] Among them, all relevant contents of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module and will not be repeated here.

[0336] In the present application, the communication device 110 may be presented in the form of functional modules divided in an integrated manner. The "module" here may refer to a specific application-specific integrated circuit (ASIC), a circuit, a processor and memory that executes one or more software or firmware programs, an integrated logic circuit, and / or other devices that can provide the above functions.

[0337] In some embodiments, when the communication device 110 in Figure 11 is a chip or a chip system, the function / implementation process of the transceiver module 1102 can be implemented through the input and output interface (or communication interface) of the chip or chip system, and the function / implementation process of the processing module 1101 can be implemented through the processor (or processing circuit) of the chip or chip system.

[0338] Since the communication device 110 provided in this embodiment can execute the above method, the technical effects that can be obtained can refer to the above method embodiments and will not be repeated here.

[0339] As a possible product form, the terminal or RAN node described in the embodiments of the present application can 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 this application.

[0340] As another possible product form, the terminal or RAN node described in the embodiment of the present application can be implemented by a general bus architecture. For ease of explanation, refer to Figure 12, which is a structural diagram of a communication device 1200 provided in an embodiment of the present application. The communication device 1200 includes a processor 1201 and a transceiver 1202. The communication device 1200 can be a terminal, or a chip or chip system therein; or, the communication device 1200 can be a RAN node, or a chip or module therein. Figure 12 only shows the main components of the communication device 1200. In addition to the processor 1201 and the transceiver 1202, the communication device can further include a memory 1203, and an input and output device (not shown in the figure).

[0341] Optionally, the processor 1201 is mainly used to process the communication protocol and communication data, as well as to control the entire communication device, execute the software program, and process the data of the software program, thereby implementing the method provided in the above method embodiment. 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 to convert baseband signals into radio frequency signals and process radio frequency signals. The antenna is mainly used to transmit and receive radio frequency signals in the form of electromagnetic waves. Input and output devices, such as a touch screen, display screen, keyboard, etc., are mainly used to receive data input by the user and output data to the user.

[0342] Optionally, the processor 1201 , the transceiver 1202 , and the memory 1203 may be connected via a communication bus.

[0343] When the communication device is powered on, the processor 1201 can 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 sent wirelessly, the processor 1201 performs baseband processing on the data to be transmitted and outputs the 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 to the outside in the form of electromagnetic waves via the antenna. When data is sent to the communication device, the radio frequency circuit receives the radio frequency signal via 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.

[0344] In another implementation, the RF circuit and antenna may be provided independently of the processor performing baseband processing. For example, in a distributed scenario, the RF circuit and antenna may be remotely arranged independent of the communication device.

[0345] In some embodiments, in terms of hardware implementation, those skilled in the art may conceive that the above-mentioned communication device 110 may take the form of the communication device 1200 shown in FIG. 12 .

[0346] As an example, the functions / implementation process of the processing module 1101 in FIG11 can be implemented by the processor 1201 in the communication device 1200 shown in FIG12 calling the computer-executable instructions stored in the memory 1203. The functions / implementation process of the transceiver module 1102 in FIG11 can be implemented by the transceiver 1202 in the communication device 1200 shown in FIG12.

[0347] As another possible product form, the terminal or RAN node in this application may adopt the structure shown in Figure 13, or include the components shown in Figure 13. Figure 13 is a schematic diagram of the structure of a communication device 1300 provided in this application. The communication device 1300 may be a terminal or a chip or system-on-chip in a terminal; or it may be a RAN node or a module or chip or system-on-chip in a RAN node.

[0348] As shown in FIG13 , the communication device 1300 includes at least one processor 1301 and at least one communication interface ( FIG13 is merely an example of one communication interface 1304 and one processor 1301). Optionally, the communication device 1300 may further include a communication bus 1302 and a memory 1303.

[0349] Processor 1301 can 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 programmable logic device (PLD), or any combination thereof. Processor 1301 can also be other devices with processing capabilities, such as circuits, devices, or software modules, without limitation.

[0350] Communication bus 1302 is used to connect the various components in communication device 1300, enabling communication between them. Communication bus 1302 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, for example. This bus can be categorized as an address bus, a data bus, a control bus, and so on. For ease of illustration, FIG13 shows a single bold line, but this does not imply that there is only one bus or type of bus.

[0351] Communication interface 1304 is used to communicate with other devices or communication networks. Exemplarily, communication interface 1304 can be a module, circuit, transceiver, or any other device capable of communication. Optionally, communication interface 1304 can also be an input / output interface within processor 1301, used to implement signal input and output to the processor.

[0352] The memory 1303 may be a device with a storage function, used to store instructions and / or data, wherein the instructions may be computer programs.

[0353] 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, or 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, etc., without limitation.

[0354] It should be noted that the memory 1303 can exist independently of the processor 1301 or can be integrated with the processor 1301. The memory 1303 can be located within the communication device 1300 or outside the communication device 1300, without limitation. The processor 1301 can be used to execute instructions stored in the memory 1303 to implement the methods provided in the following embodiments of the present application.

[0355] As an optional 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 a variety of ways. For example, the output device 1305 can be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector. The input device 1306 communicates with the processor 1301 and can receive user input in a variety of ways. For example, the input device 1306 can be a mouse, a keyboard, a touch screen device, or a sensor device.

[0356] In some embodiments, in terms of hardware implementation, those skilled in the art may conceive that the communication device 110 shown in FIG. 11 may take the form of the communication device 1300 shown in FIG. 13 .

[0357] As an example, the functions / implementation process of the processing module 1101 in FIG11 can be implemented by the processor 1301 in the communication device 1300 shown in FIG13 calling the computer-executable instructions stored in the memory 1303. The functions / implementation process of the transceiver module 1102 in FIG11 can be implemented by the communication interface 1304 in the communication device 1300 shown in FIG13.

[0358] It should be noted that the structure shown in Figure 13 does not constitute a specific limitation on the terminal or RAN node. For example, in other embodiments of the present application, the terminal or RAN node may include more or fewer components than shown, or some components may be combined or separated, or arranged differently. The components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.

[0359] In some embodiments, an embodiment of the present application further provides a communication device, which includes a processor for implementing the method in any of the above method embodiments.

[0360] As a possible implementation, 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 invoke the instructions in the computer program stored in the memory to instruct the communication device to execute any of the above-described method embodiments. Of course, the memory may not be located in the communication device.

[0361] As another possible implementation, the communication device also includes an interface circuit, which is a code / data read / write interface circuit, and the interface circuit is used to receive computer execution instructions (computer execution instructions are stored in a memory, may be read directly from the memory, or may pass through other devices) and transmit them to the processor.

[0362] As another possible implementation, the communication device further includes a communication interface, where the communication interface is used to communicate with a module outside the communication device.

[0363] It can be understood that the communication device can be a chip or a chip system. When the communication device is a chip system, it can be composed of chips or include chips and other discrete devices. The embodiments of the present application do not specifically limit this.

[0364] The present application also provides a computer-readable storage medium having a computer program or instruction stored thereon, which implements the functions of any of the above method embodiments when executed by a computer.

[0365] The present application also provides a computer program product, which implements the functions of any of the above method embodiments when executed by a computer.

[0366] Those skilled in the art will appreciate that, for the sake of convenience and brevity of description, the specific working processes of the above-described systems, devices, and units may refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0367] It is understood that the systems, devices, and methods described in this application may also be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection shown or discussed may be through some interface, indirect coupling or communication connection of devices or units, and may be electrical, mechanical, or other forms.

[0368] The units described as separate components may or may not be physically separate, i.e., they may be located in one place or distributed across multiple network units. Components shown as units may or may not be physical units. Some or all of these units may be selected to achieve the objectives of this embodiment as needed.

[0369] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0370] In the above embodiments, all or part of the embodiments may be implemented by software, hardware, firmware, or any combination thereof. When implemented using a software program, all or part of the embodiments may be implemented 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, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (eg, a solid state drive (SSD)). In the embodiment of the present application, the computer may include the aforementioned device.

[0371] Although the present application is described herein in conjunction with various embodiments, in the process of implementing the claimed application, those skilled in the art can understand and implement other changes to the disclosed embodiments by reviewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude multiple situations. A single processor or other unit can implement several functions listed in the claims. Certain measures are recorded in different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0372] Although the present application has been described with reference to specific features and embodiments thereof, it is apparent that various modifications and combinations may be made thereto without departing from the scope of the present application. Accordingly, this specification and the drawings are merely illustrative of the present application as defined by the appended claims and are deemed to cover any and all modifications, variations, combinations or equivalents within the scope of the present application. Obviously, those skilled in the art may make various modifications and variations to the present application without departing from the scope of the present application. Thus, the present application is intended to include such modifications and variations as fall within the scope of the claims of the present application and their equivalents.

Claims

1. A communication method, characterized in that: The method comprises: Obtaining first information, where the first information includes information of at least one geographical area and a wireless environment map parameter of the at least one geographical area, the wireless environment map parameter including a wireless channel parameter and / or a wireless transmission parameter associated with the wireless channel parameter; the first information also includes at least one of the following: an operating frequency band of the wireless environment map parameter, an indication of whether the wireless environment map parameter is valid, and a type of the wireless environment map parameter, where the type of the wireless environment map parameter is used to indicate whether the wireless environment map parameter is a true value; Communicate according to the first information.

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

3. The method according to claim 1 or 2, characterized in that 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, 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 wireless transmission parameters include at least one of the following: modulation and coding scheme MCS, uplink transmit power, uplink timing advance TA, precoding matrix indication PMI, beam indication, and reference signal received power.

5. The method according to any one of claims 1 to 4, characterized in that The type of the wireless environment map parameter includes a true value or a predicted value.

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 a wireless environment map parameter of the at least one geographical area; The first information is received.

7. The method according to claim 6, characterized in that The second information includes at least one of the following: location information of the terminal, information indicating the first range, and an identifier of at least one geographical area, where the at least one geographical area is a geographical area in 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: a requested working frequency band of a wireless environment map parameter, a requested wireless channel parameter, and a requested wireless transmission parameter.

9. The method according to any one of claims 1 to 8, characterized in that The at least one geographic area includes at least one first geographic area; the method further comprising: Sending third information, where the third information is used to request updating of wireless environment map parameters of the at least one first geographical area; receiving fourth information, where the fourth information is used to indicate that updating of wireless environment map parameters of part or all of the at least one first geographical area is permitted; Send updated wireless environment map parameters of the part or all of the first geographical area.

10. The method according to claim 9, characterized in that The third information includes at least one of the following: location information of the terminal, information for indicating the second range, an identifier of the 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; the at least one first geographical area is a geographical area in the second range.

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

12. The method according to claim 11, characterized in that The sending of the downlink channel parameter measurement value measured in the at least one second geographical area and / or the uplink radio transmission parameter 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 a downlink channel parameter measurement value and / or an uplink wireless transmission parameter to be used; According to the first configuration information, a downlink channel parameter measurement value measured in the at least one second geographical area and / or an uplink radio transmission parameter used in the at least second geographical area are sent.

13. The method according to claim 12, characterized in that The first configuration information is used to configure the terminal to report a downlink channel parameter measurement value and / or an uplink wireless transmission parameter to be used, including: the first configuration information is used to configure at least one of the following: downlink reference signal resources, reported downlink channel measurement value, first time unit, reported uplink radio transmission parameters, reported working frequency band of downlink channel parameters and / or uplink radio transmission parameters, frequency domain granularity for reporting downlink channel parameters and / or uplink radio transmission parameters, reporting mode, whether compressed reporting is supported, compression mode, and second resources; The downlink reference signal resource is used by the terminal to perform downlink channel measurement; The first time unit is used to indicate reporting of an uplink radio transmission parameter value used when performing uplink transmission in the first time unit; The reporting method includes periodic reporting, aperiodic reporting or semi-continuous scheduling reporting; The second resource is used to carry the downlink channel parameter measurement value and / or the used uplink wireless transmission parameter.

14. The method according to any one of claims 1 to 13, characterized in that The at least one geographic region includes at least one third geographic region; the method further comprising: Send fifth information, where the fifth information is used to feed back the credibility of the wireless channel parameters and / or wireless 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 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 information is used to feed back the credibility of the wireless channel parameters of each first frequency domain 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 domain sub-band.

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

17. The method according to any one of claims 1 to 16, characterized in that The at least one geographic region includes at least one fourth geographic region; the method further comprising: Seventh information is received, where the seventh information is used to indicate that a wireless environment map parameter of the at least one fourth geographical area is invalid.

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

19. The method according to any one of claims 1 to 6 and 18, characterized in that: The at least one geographic area includes at least one first geographic area; the method further comprising: receiving third information, the third information being used to request updating a wireless environment map parameter of the at least one first geographical area; Sending fourth information, where the fourth information is used to indicate that updating of wireless environment map parameters of part or all of the at least one first geographical area is permitted; Receive updated wireless environment map parameters of the part or all of the first geographical area.

20. The method according to claim 19, characterized in that The third information includes at least one of the following: location information of the terminal, information for indicating the second range, an identifier of the 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; the at least one first geographical area is a geographical area in the second range.

21. The method according to any one of claims 1-6, 18-20, characterized in that The at least one geographic region includes at least one second geographic region; the method further comprising: A downlink channel parameter measurement value measured in the at least one second geographical area and / or an uplink radio transmission parameter used in the at least one second geographical area is received.

22. The method according to claim 21, characterized in that The method further comprises: First configuration information is sent, where the first configuration information is used to configure the terminal to report a downlink channel parameter measurement value and / or an uplink wireless transmission parameter to be used.

23. The method according to claim 22, characterized in that The first configuration information is used to configure the terminal to report a downlink channel parameter measurement value and / or an uplink wireless transmission parameter to be used, including: the first configuration information is used to configure at least one of the following: Downlink reference signal resources, reported downlink channel parameter measurement quantity, first time unit, reported uplink radio transmission parameters, reported working frequency band of downlink channel parameters and / or uplink radio transmission parameters, frequency domain granularity for reporting downlink channel parameters and / or uplink radio transmission parameters, reporting method, whether compressed reporting is supported, compression method, and second resources; The downlink reference signal resource is used by the terminal to perform downlink channel measurement; The first time unit is used to indicate reporting of an uplink radio transmission parameter value used when performing uplink transmission in the first time unit; The reporting method includes periodic reporting, aperiodic reporting or semi-continuous scheduling reporting; The second resource is used to carry the downlink channel parameter measurement value and / or the used uplink wireless transmission parameter.

24. The method according to any one of claims 1-6 and 18-23, characterized in that The at least one geographic region includes at least one third geographic region; the method further comprising: Fifth information is received, where the fifth information is used to feed back 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, characterized in that The fifth information is used to feed back 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 information is used to feed back the credibility of the wireless channel parameters of each first frequency domain 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 domain sub-band.

26. The method according to claim 24 or 25, characterized in that The fifth information is used to feed back the credibility of each first wireless transmission parameter of 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 and 18-26, characterized in that The at least one geographic region includes at least one fourth geographic region; the method further comprising: Seventh information is received, where the seventh information is used to indicate that a wireless environment map parameter of the at least one fourth geographical area is invalid.

28. A communication device, characterized in that: The communication device includes: a processing module and a transceiver module; The processing module is configured to obtain first information, where the first information includes information of at least one geographical area and a wireless environment map parameter of the at least one geographical area, the wireless environment map parameter including a wireless channel parameter and / or a wireless transmission parameter associated with the wireless channel parameter; the first information further includes at least one of the following: an operating frequency band of the wireless environment map parameter, an indication of whether the wireless environment map parameter is valid, and a type of the wireless environment map parameter, where the type of the wireless environment map parameter is used to indicate whether the wireless environment map parameter is a true value; The transceiver module is used to communicate according to the first information.

29. The communication device according to claim 28, wherein: The first information also includes the credibility of the wireless environment map parameters.

30. The communication device according to claim 28 or 29, characterized in that 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, or frequency domain channel response on at least one frequency domain bandwidth.

31. The communication device according to any one of claims 28 to 30, characterized in that: 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 indication PMI, beam indication, and reference signal received power.

32. The communication device according to any one of claims 28 to 31, characterized in that: The type of the wireless environment map parameter includes a true value or a predicted value.

33. The communication device according to any one of claims 28 to 32, characterized in that: The processing module is configured to obtain the first information, including: The processing module is configured to send second information through the transceiver module, where the second information is used to request a wireless environment map parameter of the at least one geographical area; The processing module is further configured to receive the first information through the transceiver module.

34. The communication device according to claim 33, wherein: The second information includes at least one of the following: location information of the terminal, information indicating the first range, and an identifier of at least one geographical area, where the at least one geographical area is a geographical area in the first range.

35. The communication device according to claim 33 or 34, characterized in that The second information includes at least one of the following: a requested working frequency band of a wireless environment map parameter, a requested wireless channel parameter, and a requested wireless transmission parameter.

36. The communication device according to any one of claims 28 to 35, characterized in that The at least one geographic region includes at least one first geographic region; The transceiver module is further configured to send third information, where the third information is used to request an update of a wireless environment map parameter of the at least one first geographical area; The transceiver module is further configured to receive fourth information, where the fourth information is used to indicate that updating of the radio environment map parameters of part or all of the at least one first geographical area is permitted; The transceiver module is further configured to send updated wireless environment map parameters of part or all of the first geographical area.

37. The communication device according to claim 36, wherein: The third information includes at least one of the following: location information of the terminal, information for indicating the second range, an identifier of the 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; the at least one first geographical area is a geographical area in the second range.

38. The communication device according to any one of claims 28 to 37, characterized in that: The at least one geographic region includes at least one second geographic region; The transceiver module is further configured to send a downlink channel parameter measurement value measured in the at least one second geographical area, and / or an uplink wireless transmission parameter used in the at least one second geographical area.

39. The communication device according to claim 38, characterized in that The transceiver module is further configured to send a downlink channel parameter measurement value measured in the at least one second geographical area and / or an uplink wireless transmission parameter used in the at least one second geographical area, including: The transceiver module is further configured to receive first configuration information, where the first configuration information is used to configure the terminal to report a downlink channel parameter measurement value and / or an uplink wireless transmission parameter to be used; The transceiver module is further configured to send, according to the first configuration information, a downlink channel parameter measurement value measured in the at least one second geographical area and / or an uplink wireless transmission parameter used in the at least second geographical area.

40. The communication device according to claim 39, wherein: The first configuration information is used to configure the terminal to report a downlink channel parameter measurement value and / or an uplink wireless transmission parameter to be used, including: the first configuration information is used to configure at least one of the following: downlink reference signal resources, reported downlink channel measurement value, first time unit, reported uplink radio transmission parameters, reported working frequency band of downlink channel parameters and / or uplink radio transmission parameters, frequency domain granularity for reporting downlink channel parameters and / or uplink radio transmission parameters, reporting mode, whether compressed reporting is supported, compression mode, and second resources; The downlink reference signal resource is used by the terminal to perform downlink channel measurement; The first time unit is used to indicate reporting of an uplink radio transmission parameter value used when performing uplink transmission in the first time unit; The reporting method includes periodic reporting, aperiodic reporting or semi-continuous scheduling reporting; The second resource is used to carry the downlink channel parameter measurement value and / or the used uplink wireless transmission parameter.

41. The communication device according to any one of claims 28 to 40, characterized in that: The at least one geographic region includes at least one third geographic region; The transceiver module is further configured to send fifth information, where the fifth information is used to provide feedback on the credibility of the wireless channel parameters and / or wireless transmission parameters of the at least one third geographical area.

42. The communication device according to claim 41, wherein: The fifth information is used to feed back 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 information is used to feed back the credibility of the wireless channel parameters of each first frequency domain 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 domain sub-band.

43. The communication device according to claim 41 or 42, characterized in that The fifth information is used to feed back the credibility of each first wireless transmission parameter of the third geographical area, and the wireless transmission parameters used by the terminal include each first wireless transmission parameter.

44. The communication device according to any one of claims 28 to 43, characterized in that The at least one geographic region includes at least one fourth geographic region; The transceiver module is further configured to receive seventh information, where the seventh information is configured to indicate that a wireless environment map parameter of the at least one fourth geographical area is invalid.

45. The communication device according to claim 33 or 35, characterized in that The second information includes an identifier of a first cell managed by a radio access network RAN node, and the at least one geographical area includes a geographical area in the first cell.

46. The communication device according to any one of claims 28 to 33 and 45, characterized in that: The at least one geographic region includes at least one first geographic region; The transceiver module is further configured to receive third information, where the third information is used to request an update of a wireless environment map parameter of the at least one first geographical area; The transceiver module is further configured to send fourth information, where the fourth information is used to indicate that updating of the radio environment map parameters of part or all of the at least one first geographical area is permitted; The transceiver module is further configured to receive updated wireless environment map parameters of part or all of the first geographical area.

47. The communication device according to claim 46, characterized in that The third information includes at least one of the following: location information of the terminal, information for indicating the second range, an identifier of the 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; the at least one first geographical area is a geographical area in the second range.

48. The communication device according to any one of claims 28 to 33 and 45 to 47, characterized in that: The at least one geographic region includes at least one second geographic region; The transceiver module is further configured to receive a downlink channel parameter measurement value measured in the at least one second geographical area, and / or an uplink wireless transmission parameter used in the at least one second geographical area.

49. The communication device according to claim 48, characterized in that The transceiver module is further configured to send first configuration information, where the first configuration information is used to configure the terminal to report downlink channel parameter measurement values and / or uplink wireless transmission parameters used.

50. The communication device according to claim 49, wherein The first configuration information is used to configure the terminal to report a downlink channel parameter measurement value and / or an uplink wireless transmission parameter to be used, including: the first configuration information is used to configure at least one of the following: Downlink reference signal resources, reported downlink channel parameter measurement quantity, first time unit, reported uplink radio transmission parameters, reported working frequency band of downlink channel parameters and / or uplink radio transmission parameters, frequency domain granularity for reporting downlink channel parameters and / or uplink radio transmission parameters, reporting method, whether compressed reporting is supported, compression method, and second resources; The downlink reference signal resource is used by the terminal to perform downlink channel measurement; The first time unit is used to indicate reporting of an uplink radio transmission parameter value used when performing uplink transmission in the first time unit; The reporting method includes periodic reporting, aperiodic reporting or semi-continuous scheduling reporting; The second resource is used to carry the downlink channel parameter measurement value and / or the used uplink wireless transmission parameter.

51. The communication device according to any one of claims 28 to 33 and 45 to 50, characterized in that: The at least one geographic region includes at least one third geographic region; The transceiver module is further configured to receive fifth information, where the fifth information is used to feed back the credibility of the wireless channel parameters and / or wireless transmission parameters of the at least one third geographical area.

52. The communication device according to claim 51, characterized in that The fifth information is used to feed back 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 information is used to feed back the credibility of the wireless channel parameters of each first frequency domain 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 domain sub-band.

53. The communication device according to claim 51 or 52, characterized in that The fifth information is used to feed back the credibility of each first wireless transmission parameter of the third geographical area, and the wireless transmission parameters used by the terminal include each first wireless transmission parameter.

54. The communication device according to any one of claims 28 to 33 and 45 to 53, characterized in that: The at least one geographic region includes at least one fourth geographic region; The transceiver module is further configured to receive seventh information, where the seventh information is configured to indicate that a wireless environment map parameter of the at least one fourth geographical area is invalid.

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

56. 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 to 27 is executed.

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

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