Information determination method, signal sending method, parameter configuration sending method, communication node, and medium

Abstract

Provided in the present application are an information determination method, a signal sending method, a parameter configuration sending method, a communication node, and a medium. The information determination method is applied to a first communication node, and comprises: determining a sub-band parameter of a beam measurement reference signal resource; and on the basis of the sub-band parameter, determining first information corresponding to the beam measurement reference signal resource, wherein the first information comprises at least one of the following: channel state information corresponding to the beam measurement reference signal resource and a parameter configuration corresponding to the beam measurement reference signal resource; and one frequency-domain bandwidth comprises at least one sub-band, one sub-band comprises at least one physical resource block, and one frequency-domain bandwidth is one serving cell or one bandwidth part.

Description

Information determination method, signal transmission method, parameter configuration transmission method, communication nodes and media Technical Field

[0001] This application relates to the field of wireless communication technology, such as information determination methods, signal transmission methods, parameter configuration transmission methods, communication nodes, and media. Background Technology

[0002] Multiple-In-Multiple-Output (MIMO) is an important means of improving communication capacity. MIMO uses transmitter compensation to direct the transmitted signal energy to one or more paths between the base station and the terminal with lower loss. In beam training schemes, for the same propagation path, the precoded transmit beams at different frequency domain locations are assumed to be the same. In the beam training process of 5G New Radio (NR), beam selection does not differentiate between sub-bands for beam training; instead, it is assumed that the receiving performance of a transmit beam in sub-band 1 is equivalent to that in sub-band 2, and the beam training results in sub-band 1 can be directly applied to sub-band 2; it is even assumed that beams from different serving cells can be mutually referenced. In other words, the beam training phase only focuses on the difference in beam indices, without considering that the same transmit beam index may have different receiving performance in different sub-bands.

[0003] With the future application of large bandwidth and large arrays, dispersion phenomena cannot be ignored. The optimal precoding of the base station corresponding to each path at different frequency domain locations will be different, and the above beam training scheme will no longer be applicable. In order to improve the matching degree between the channel and the trained beam, and make the obtained beam training results more accurate and efficient, the sub-band problem needs to be considered during beam training in the case of single path. Moreover, when dispersion and multipath effects are superimposed, the sub-band problem needs to be considered even more in the beam training stage. Summary of the Invention

[0004] This application provides an information determination method, a signal transmission method, a parameter configuration transmission method, a communication node, and a medium.

[0005] This application provides an information determination method applied to a first communication node, comprising: determining subband parameters of a beam measurement reference signal resource; determining first information corresponding to the beam measurement reference signal resource based on the subband parameters, wherein the first information includes at least one of the following: channel state information corresponding to the beam measurement reference signal resource and parameter configuration corresponding to the beam measurement reference signal resource; wherein a frequency domain bandwidth includes at least one subband, a subband includes at least one physical resource block (PRB), and a frequency domain bandwidth is a serving cell or a bandwidth part (BWP).

[0006] This application also provides a signal transmission method applied to a second communication node, comprising: transmitting a beam measurement reference signal in a beam measurement reference signal resource; receiving channel state information transmitted by a first communication node, wherein the channel state information is determined by the first communication node based on the sub-band parameters of the beam measurement reference signal resource; wherein a frequency domain bandwidth includes at least one sub-band, a sub-band includes at least one physical resource block, and a frequency domain bandwidth is a serving cell or a bandwidth portion.

[0007] This application embodiment also provides a parameter configuration transmission method applied to a second communication node, comprising: determining the parameter configuration of the beam measurement reference signal resource based on the subband parameters of the beam measurement reference signal resource; and transmitting the parameter configuration to a first communication node; wherein, a frequency domain bandwidth includes at least one subband, a subband includes at least one PRB, and a frequency domain bandwidth is a serving cell or a BWP.

[0008] This application also provides a communication node, including: a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, it implements the above-described information determination method, signal transmission method, or parameter configuration transmission method.

[0009] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described information determination method, signal transmission method, or parameter configuration transmission method. Attached Figure Description

[0010] Figure 1 shows the correspondence between the precoding angle and frequency domain of a scatterer provided in an embodiment;

[0011] Figure 2 is a flowchart of an information determination method provided in an embodiment;

[0012] Figure 3 is a flowchart of a signal transmission method provided in an embodiment;

[0013] Figure 4 is a flowchart of a parameter configuration sending method provided in an embodiment;

[0014] Figure 5 is a schematic diagram of a sub-band and a reference sub-band provided in an embodiment;

[0015] Figure 6 is a schematic diagram of the channel quality of a CSI-RS resource in different frequency domains according to an embodiment;

[0016] Figure 7 is a schematic diagram of a method for providing feedback on channel quality in each sub-band according to an embodiment;

[0017] Figure 8 is a schematic diagram illustrating the feedback of channel quality for a selected CSI-RS resource in a corresponding subband according to an embodiment.

[0018] Figure 9 is a schematic diagram of an embodiment in which the same number of CSI-RS resources are selected for each subband;

[0019] Figure 10 is a schematic diagram of an embodiment that provides feedback on the channel quality corresponding to each CSI-RS resource on a selected subband;

[0020] Figure 11 is a schematic diagram of a combination of CSI-RS resources and subbands provided in an embodiment;

[0021] Figure 12 is a schematic diagram of an embodiment of configuring a separate PRB set for each CSI-RS resource;

[0022] Figure 13 is a schematic diagram of a sub-band division method provided in one embodiment;

[0023] Figure 14 is a schematic diagram of a CSI-RS resource set including a CSI-RS resource group according to an embodiment;

[0024] Figure 15 is a schematic diagram of an information determination device according to an embodiment;

[0025] Figure 16 is a schematic diagram of a signal transmitting device according to an embodiment;

[0026] Figure 17 is a schematic diagram of a parameter configuration sending device according to an embodiment;

[0027] Figure 18 is a schematic diagram of the hardware structure of a communication node according to an embodiment. Detailed Implementation

[0028] The present application will now be described in conjunction with the accompanying drawings and embodiments. The specific embodiments described herein are merely illustrative of the present application. Unless otherwise specified, the embodiments and features described herein can be arbitrarily combined with each other. For ease of description, only the parts relevant to the present application are shown in the accompanying drawings.

[0029] The same scatterer location corresponds to multiple precoded angles in the frequency domain (actually corresponding to one scatterer angle, but we need to quantize it into a Discrete Fourier Transform (DFT) or other precoded words, so the corresponding precoded angles are different in different frequency domains). However, the polarization phase difference and fading corresponding to these multiple precoded angles are the same because the scatterer is the same.

[0030] Assume the physical channel is represented by the following model:

[0031] Where, θ rx,m,k θ tx,m,k a represents the arrival angle and transmission angle corresponding to the precoding quantization field of the m-th path at subband k. m W(θ) is the fading coefficient corresponding to the m-th path. rx，m，k W(θ) represents the spatial vector corresponding to the arrival angle of the m-th path. tx，m，k ) represents the spatial vector corresponding to the departure angle of the m-th path. W T，real (θ tx，k0 ) represents the spatial vector corresponding to the transmit precoding used by the base station. θrx,m,scatter is the arrival angle (also called the reception angle) corresponding to the position of the scatterer on the m-th path, and θtx,m,scatter is the departure angle (also called the departure angle) corresponding to the position of the scatterer on the m-th path. The above satisfy the following characteristics:

[0032] It is evident that for a scatterer, its position angle θrx,m, and scatter do not change with the frequency domain, but the angle information θ in the quantized precoding domain remains constant. rx，m，k θ tx，m，k It will vary with the frequency domain k, where k is the frequency domain index. Alternatively, it can be considered that the position angle causes different path differences at different wavelengths, resulting in different precoding angles, where different frequency domain k correspond to different wavelengths.

[0033] Figure 1 shows the correspondence between the precoding angles and frequency domain of a scatterer according to an embodiment. In Figure 1, angles 1 and 2 correspond to θtx,1,scatter and θtx,2,scatter, respectively. Angles 1 and 2 are the angles corresponding to the positions of the scatterer and do not change with the frequency domain. Angles 11 and 12 correspond to θ... tx，1，1 and θ tx，1，2 Angles 11 and 22 correspond to θ respectively. tx,2,1 and θ tx,2,2 It can be seen that a path corresponds to different precoding angles at different frequency domain positions k. T,real (θ tx,k0 ) is the broadband radio frequency precoding vector used by the base station. This precoding vector has a conventional form, defined by θ. tx,k0 This means that the RF precoding is consistent across the entire bandwidth, and its angle is based on the precoding of a path at the most matched subband k0, for example, θ. tx,k0 =θ tx,1,0 W T (θ tx,m,k ) is the optimal transmit precoding vector corresponding to the channel at frequency position k in the frequency domain. This precoding vector has a conventional form, given by θ. tx,m,k Sure. This refers to the correlation between optimal precoding and wideband precoding. As shown in equation (1-3), this correlation varies with the frequency domain index k. On the same path, the correlation of a wideband radio frequency precoding varies depending on the frequency domain location and channel. 'a' is a predetermined value or a value notified by the base station, such as a = 0.5 or a = 1; other values ​​are also possible. In some scenarios, the spacing between the base station's transmit antennas is d = aλ. r , where λ r It is the carrier corresponding to the frequency domain position at the reference frequency domain position, for example, c = λ r f r ..f r This is the carrier frequency at the reference frequency domain location. In Figure 1, one scatterer corresponds to one path. When one scatterer corresponds to multiple paths (for example, one scatterer scatters or reflects multiple paths), it is considered as multiple virtual scatterers. In short, each path corresponds to a pair of launch angles and reception angles.

[0034] As mentioned above, if the same CSI-RS resource corresponds to a wideband radio frequency precoding W T,real (θ tx,m,k0 This does not change with the frequency domain; that is, the base station uses a single radio frequency beam to transmit the signal on this CSI-RS resource across the full bandwidth. However, the optimal precoding W corresponding to the actual channel... T (θ tx,m,kAs the frequency domain k changes, the RF beam corresponding to a CSI-RS resource, for a single path, can only be compared and matched with channels in one frequency domain. The matching degree with channels in other frequency domains will not reach 1. That is, for each path, The frequency domain k varies. Table 1 shows the correlation between each path at different frequency domain locations and the broadband precoding used by the base station.

[0035] Table 1 shows the correlation between each path and the broadband precoding used by the base station at different frequency domain locations.

[0036] As shown in the last row of Table 1, the channel matching degree of the same CSI-RS resource corresponding to a wideband transmit precode varies at different frequency domain locations. Therefore, the Reference Signal Receiving Power (RSRP) of the same CSI-RS resource also differs at different frequency domain locations. For the same CSI-RS resource corresponding to a wideband RF transmit precode angle, the scatterer with the highest matching degree may differ at different frequency domain locations, resulting in different fading. Therefore, the fact that a CSI-RS resource has the best reception performance in subband 1 does not mean that the same CSI-RS resource will also have the best reception performance in subband 2. Similarly, when performing beamforming training, if the base station transmits multiple transmit precodes, and the reception performance of transmit precode 1 in subband 1 is the best, it does not mean that the reception performance of transmit precode 1 in subband 2 is also the best. Therefore, beamforming selection between subbands cannot be used as a reference or a standard for beamforming selection. Just because precoding angle 1 in frequency domain 2 is good doesn't mean angle 1 in frequency domain 2 is also good. This is because the main scatterer (scatterer 1) corresponding to angle 1 in frequency domain 1 and the scatterer (scatterer 2) corresponding to angle 1 in frequency domain 2 may be different, resulting in different fading coefficients. Table 1 shows that each precoding angle corresponds to a transmit beam index (which is also the transmit precoding index), for example... This corresponds to transmit beam index 0. A transmit beam has a certain beamwidth, therefore... They all correspond to transmit beam index 1, but the beam gain of a transmit beam is different at different angles, although They all correspond to transmit beam index 1, but their beam gains may be different, but the difference will not be too large, for example, within 3dB.

[0037] If the receiving end also has many receiving antennas, then the receiving beam will also exhibit dispersion, resulting in the relationship shown in Table 2.

[0038] Table 2 shows the correlation between each path and the broadband precoding used by the base station at different frequency domain locations.

[0039] As shown in Tables 1 and 2, due to the effect of dispersion, the optimal transmit precoding beams corresponding to the same propagation path are different at different frequency domain positions, and the optimal receive precoding may also be different. On the other hand, when the propagation delays of multiple paths are different, the superposition of multiple paths will also cause the optimal transmit precoding angles of the channels at different frequency domain positions to be different. Specifically, if multipath delay is considered in the channel model, formula (1-2) can be changed to the following form:

[0040] Where, r m,k This is the correlation between the optimal transmit precoding for the channel and the transmit precoding actually used by the base station. This correlation varies for each path *m*, depending on the frequency domain *k*. It is evident that dispersion and multipath superposition can cause significant differences in the receive performance of the same broadband transmit precoding at different frequency domain locations. Here, *N* represents the number of frequency domain units. A sub-band includes one or more frequency domain units, such as one or more PRBs. The granularity of spatial vector changes in the frequency domain caused by dispersion for the same path is the sub-band, with an index of *k*. The granularity of spatial vector changes in the frequency domain caused by multipath superposition due to delay is the frequency domain unit, with an index of *k1*.

[0041] For example, a Channel Status Information-Reference Signal resource (CSI-RS resource) corresponds to only one wideband transmit precoding at a base station. Therefore, the matching degree between a CSI-RS resource and the channel varies in different frequency domains. The fact that a CSI-RS resource has the best reception performance in a certain subband does not mean that it will have the best reception performance in another subband. If the receiver also has multiple receiving antennas, the received beam exhibits dispersion, causing the optimal transmit precoding beam corresponding to the same propagation path to differ at different frequency domain locations, and the optimal receive precoding may also differ. Furthermore, when the propagation delays of multiple paths are different, the superposition of multiple paths will also cause the optimal transmit precoding angle of the channel corresponding to different frequency domain locations to differ. It is evident that dispersion and multipath superposition factors can lead to significant differences in the reception performance of the same transmit precoding at different frequency domain locations.

[0042] For the same propagation path, it is assumed that the precoding transmission beams at different frequency domain locations are the same, that is, the correlation between a transmission precode and the channel is as shown in formula (2-2).

[0043] Where, r mIt is the correlation between the optimal transmission precoding corresponding to the channel and the transmission precoding actually used by the base station. This correlation does not differ for each path m, regardless of the sub-band.

[0044] In the beam training process of 5G NR, beam selection does not differentiate between sub-bands for separate beam training; the beam training results on sub-band 1 can be directly applied to sub-band 2. For example, for a serving cell or a BWP, the beam training results on sub-band 1 can be directly applied to sub-band 2. A serving cell (or a BWP) corresponds to at least sub-band 1 and sub-band 2, assuming that the reception performance of a transmit beam on sub-band 1 is equivalent to that on sub-band 2. It's even assumed that beams from different serving cells can be cross-referenced. For example, the optimal transmit beam on serving cell 1 is considered the optimal transmit beam on serving cell 2. In other words, in 5G NR beam training, the sub-band issue was not carefully designed during the beam training phase. For a single serving cell or BWP, only the difference in beam index was considered, without considering that the same transmit beam index would have different reception performance on different sub-bands, and without considering the combination of beam index and sub-band index.

[0045] Based on the above analysis, with the future application of large bandwidth and large arrays, dispersion phenomena cannot be ignored. In the case of single-path beamforming, sub-band issues need to be considered during beam training. Moreover, when dispersion and multipath effects are superimposed, sub-band issues need to be considered even more during the beam training stage. To address this, one or more solutions provided in the embodiments of this application can be adopted.

[0046] Figure 2 is a flowchart of an information determination method provided in one embodiment. This method can be applied to a first communication node, which can be a user-side node such as a terminal. As shown in Figure 2, the method provided in this embodiment includes 110 and 120.

[0047] In step 110, the subband parameters of the beam measurement reference signal resource are determined.

[0048] In step 120, the first information corresponding to the beam measurement reference signal resource is determined based on the sub-band parameters.

[0049] The first information includes at least one of the following: channel state information corresponding to the beam measurement reference signal resource and parameter configuration corresponding to the beam measurement reference signal resource; wherein, a frequency domain bandwidth includes at least one sub-band, a sub-band includes at least one physical resource block (PRB), and a frequency domain bandwidth is a serving cell or a BWP.

[0050] The information determination method in this embodiment can refine the sub-band design during the beam training phase, improving the matching degree between the channel and the trained beam, resulting in more accurate and efficient beam training results. This method is also suitable for scenarios where the reception performance of the channel and the same transmitted beam varies significantly across different sub-bands due to other factors.

[0051] In one embodiment, in step 120, the subband parameters may be determined based on the first information, or the subband parameters and the first information may satisfy a predetermined rule.

[0052] In one embodiment, a first communication node receives a beam measurement reference signal from the beam measurement reference signal resource and determines the channel state information corresponding to the received beam measurement reference signal resource based on sub-band parameters. When it is determined that the channel state information needs to be sent to a second communication node, the first communication node sends the determined channel state information to the second communication node.

[0053] In one embodiment, in step 110, determining the subband parameters of the beam measurement reference signal resources includes determining the subband parameters of the beam measurement reference signal resources for at least two beam measurement reference signal resources respectively; that is, the subband parameters are determined at the measurement reference signal resource level. For example, the difference between the two transmit precoding angles corresponding to the two beam measurement reference signal resources is relatively large, or the two transmit precoding angles corresponding to the two beam measurement reference signal resources belong to different transmit precoding angle groups.

[0054] In one embodiment, in step 110, determining the subband parameters of the beam measurement reference signal resources includes determining the subband parameters for each of the two beam measurement reference signal resource sets (or two beam measurement reference signal resource groups), i.e., the subband parameters are determined at the measurement reference signal resource set or group level. For example, the difference between the two transmit precoding angles corresponding to these two beam measurement reference signal resource sets (or groups) is relatively large, or the two transmit precoding angles corresponding to these two beam measurement reference signal resources (or groups) belong to different transmit precoding angle groups.

[0055] In one embodiment, in step 110, determining the subband parameters of the beam measurement reference signal resource includes determining the subband parameters through signaling notified by the second communication node to the first communication node, or determining the subband parameters according to rules agreed upon by the second communication node.

[0056] In one embodiment, in step 110, determining the sub-band parameters of the beam measurement reference signal resource includes a first communication node determining the sub-band parameters of the beam measurement reference signal resource, and the first communication node reporting the determined sub-band parameters to a second communication node.

[0057] In one embodiment, the channel state information includes at least one of the following: channel quality information of a beam measurement reference signal resource in each subband of more than one subband; channel quality information of a beam measurement reference signal resource in one subband; at least one beam measurement reference signal resource indication information corresponding to each subband of more than one subband; at least one combined indication information, wherein each combined indication information indicates a beam measurement reference signal resource in a subband; subband parameters corresponding to a beam measurement reference signal resource; subband parameters corresponding to a set of beam measurement reference signal resources; broadband channel quality of a beam measurement reference signal resource and information reflecting the relationship between the subband channel quality of the beam measurement reference signal resource in different subbands; broadband channel quality of a beam measurement reference signal resource, wherein the broadband channel quality is a weighted average of the channel quality of the beam measurement reference signal resource in different subbands, wherein each subband in the different subbands corresponds to a weighted value.

[0058] In one embodiment, the channel state information includes at least one of the following: group index indication information of the measurement reference signal resource group selected by the first communication node from a plurality of measurement reference signal resource groups, and the channel quality corresponding to each of the plurality of measurement reference signal resource groups.

[0059] A beam measurement reference signal resource set includes multiple beam measurement reference signal resource groups. The beam measurement reference signal resources included in each beam measurement reference signal resource group occupy different time domain positions and occupy the same subband. The beam measurement reference signal resources in different beam measurement reference signal resource groups occupy different time domain positions and occupy different subbands.

[0060] In one embodiment, one of the beam measurement reference signal resources occupies only the frequency domain resources of one subband at any given time.

[0061] In one embodiment, a beam measurement reference signal resource may occupy frequency domain resources in different subbands at different times.

[0062] In one embodiment, when the channel state information includes at least one of the combination indication information, the method further includes: determining a set of candidate combinations; determining at least one candidate combination from the set of candidate combinations; and reporting channel quality information corresponding to each of the determined at least one candidate combination to a second communication node; wherein the channel quality information corresponding to each candidate combination is the channel quality information of the beam measurement reference signal resource in the corresponding candidate combination on the subband of the corresponding candidate combination; one beam measurement reference signal resource occupies at least one subband, and one beam measurement reference signal resource on one subband is called a candidate combination.

[0063] In one embodiment, when the channel state information includes multiple combinations of indication information, the channel state information includes at least one set of candidate combinations; beam measurement reference signal resources in candidate combinations in the same group can be simultaneously received by the first communication node; and / or, beam measurement reference signal resources in candidate combinations in different groups can be simultaneously received by the first communication node.

[0064] In one embodiment, the broadband channel quality is calculated according to the following formula: Where B represents the number of subbands occupied by the beam measurement reference signal resource, i is the subband index, and a i Q represents the weighted value corresponding to subband i. i This indicates the channel quality of the beam measurement reference signal resource on the occupied subband i.

[0065] In one embodiment, the information reflecting the relationship between the subband channel quality of the beam measurement reference signal resource in different subbands includes at least one of the following: the subband index corresponding to the largest subband channel quality; the variance of the multiple subband channel qualities.

[0066] In one embodiment, the first information further includes capability information; the method further includes: reporting the capability information to a second communication node, wherein the capability information is specific to a single subband.

[0067] In one embodiment, the capability information includes information on the maximum number of beam measurement reference signal resources included in a beam measurement reference signal resource set; wherein, the repeat transmission indication parameter of the beam measurement reference signal resource set is configured for repeat transmission.

[0068] In one embodiment, the parameter configuration of the beam measurement reference signal resource includes the configuration of at least one of the following parameters: the time-domain repetition count of the beam measurement reference signal resource, the parameters of the beam measurement reference signal resource set, the repetition transmission indication parameter corresponding to the beam measurement reference signal resource set, the indication information of whether the first communication node reports the channel state information obtained based on the beam measurement reference signal resource set to the second communication node, and the capability information corresponding to the beam measurement reference signal resource; wherein, the beam measurement reference signal resource set includes the beam measurement reference signal resource.

[0069] In one embodiment, the method further includes: a second information determination module, configured to determine second information, wherein the second information is associated with the sub-band parameters; the second information includes at least one of the following: the channel state information, the capability information of the first communication node, the first parameter configuration information of the beam measurement reference signal resource, and the second parameter configuration information of the beam measurement reference signal resource set.

[0070] In one embodiment, determining the sub-band parameters of a beam measurement reference signal resource includes: determining a sub-band parameter set corresponding to a beam measurement reference signal resource set; wherein the beam measurement signal resource set includes at least one beam measurement reference signal resource; the sub-band parameter set corresponding to the beam measurement reference signal resource set includes sub-band parameters corresponding to each beam measurement reference signal resource in the beam measurement reference signal resource set; and the sub-band parameter set corresponding to the beam measurement reference signal resource set and the second parameter configuration information corresponding to the beam measurement signal resource set satisfy a predetermined rule.

[0071] In one embodiment, the second parameter configuration information includes a repeated transmission indication parameter; the repeated transmission indication parameter indicates repeated transmission, meaning that the spatial transmission filters corresponding to different beam measurement reference signal resources in the beam measurement reference signal resource set are the same; the repeated transmission indication parameter indicates non-repeated transmission, meaning that the spatial transmission filters corresponding to different beam measurement reference signal resources in the beam measurement reference signal resource set are different.

[0072] In one embodiment, the predetermined rule between the repeat transmission indication parameter and the subband parameter set includes at least one of the following: when the repeat transmission indication parameter is configured for repeat transmission, different measurement reference signal resources in the beam measurement reference signal resource set are located in the same subband; when the beam measurement reference signal resource set includes at least two beam measurement reference signal resources located in different subbands, the repeat transmission indication parameter cannot be configured for repeat transmission; when the beam measurement reference signal resource set includes at least two beam measurement reference signal resources located in different subbands, the repeat transmission indication parameter can only be configured for non-repeated transmission; or when the repeat transmission indication parameter is configured for repeat transmission, all beam measurement reference signal resources in the beam measurement reference signal resource set correspond to the same subband parameter.

[0073] In one embodiment, the second parameter configuration information includes indication information on whether the first communication node reports channel state information obtained based on the beam measurement reference signal resource set to the second communication node.

[0074] In one embodiment, the predetermined rule between the indication information and the subband parameters includes at least one of the following: if the beam measurement reference signal resource set includes at least two beam measurement reference signal resources located in different subbands, the indication information cannot be configured not to be reported; if the beam measurement reference signal resource set includes at least two beam measurement reference signal resources located in different subbands, the indication information is configured to be reported.

[0075] In one embodiment, determining the subband parameters of a beam measurement reference signal resource includes: determining the subband parameters corresponding to a set of beam measurement reference signal resources based on signaling, information, or agreed-upon rules; determining the PRB set occupied by each beam measurement reference signal resource in the set of beam measurement reference signal resources based on the subband parameters; wherein the set of beam measurement reference signal resources includes at least one beam measurement reference signal resource; and the subband parameters include PRB index indication information or subband index information.

[0076] In one embodiment, at least one of the following conditions is met: the first parameter configuration information of each measurement reference signal resource in the beam measurement reference signal resource set includes the RE position pattern occupied by the corresponding beam measurement reference signal resource in a PRB, but does not include the configuration information of the PRB set occupied by the corresponding measurement reference signal resource; the RE position pattern occupied by each beam measurement reference signal resource in the beam measurement reference signal resource set is the same in each of the multiple PRBs occupied; each beam measurement reference signal resource in the beam measurement reference signal resource set occupies one PRB for every X PRBs in the PRB set indicated by the sub-band parameters, where X is an integer greater than or equal to 1, and when X is greater than 1, the first parameter configuration information of each beam measurement reference signal resource in the beam measurement reference signal resource set includes the starting position of the PRB occupied by the corresponding beam measurement reference signal resource.

[0077] In one embodiment, determining the subband parameters of a beam measurement reference signal resource includes: determining the subband parameters corresponding to the beam measurement reference signal resource and the subband parameters corresponding to the set of beam measurement reference signal resources according to signaling information or agreed rules; when the set of beam measurement reference signal resources includes the beam measurement reference signal resource, the subband determined according to the subband parameters corresponding to the set of beam measurement reference signal resources belongs to the subband set determined according to the subband parameters corresponding to the beam measurement reference signal resource; wherein, one beam measurement reference signal resource occupies one or more subbands.

[0078] In one embodiment, determining the channel state information based on subband parameters includes at least one of the following: when a beam measurement reference signal resource set includes at least two measurement reference signal resources located in different subbands, and the repeat transmission indication parameter in the beam measurement reference signal resource set is configured for repeat transmission, the channel state information includes indication information of the measurement reference signal resource selected by the first communication node in the beam measurement reference signal resource set, and the first communication node sends the channel state information to the second communication node; when different beam measurement reference signal resources in the beam measurement reference signal resource set are located in the same subband, and the repeat transmission indication parameter in the beam measurement reference signal resource set is configured for repeat transmission, the first communication node does not send the channel state information to the second communication node.

[0079] In one embodiment, the second information and the sub-band parameter are associated, including at least one of the following: obtaining the other based on one of the second information and the sub-band parameter; obtaining the value range of the other based on one of the second information and the sub-band parameter; the combination of values ​​of the second information and the sub-band parameter satisfying a predetermined condition; and the configuration information of one of the second information and the sub-band parameter including configuration information about the other.

[0080] In one embodiment, at least one of the following conditions is met: a beam measurement reference signal resource corresponds to at least one of the following on different subbands: one or more types of channel large-scale parameters, quasi-co-located reference signals, channel quality, and reference channel quality; a beam measurement reference signal resource does not satisfy a quasi-co-located relationship with respect to a type of quasi-co-located parameters across different subbands; a BWP includes one or more subbands; a subband includes at least one channel state information subband, wherein each of the at least one channel state information subband corresponds to at least one of the following: a precoding matrix indicator (PMI) and a channel quality indicator (CQI); and corresponding subband parameters are determined for each beam measurement reference signal resource in a set of beam measurement reference signal resources.

[0081] In one embodiment, the subband parameters include at least one of the following: subband size, starting position of the first subband, number of subbands, index type of physical resource blocks (PRBs) included in the subband, and position of the reference subband; wherein the index type includes an index obtained based on the common reference position of the carrier or an index of a PRB in the set of PRBs included in the BWP.

[0082] In one embodiment, the beam measurement reference signal resource includes at least one of the following: measurement reference signal resources in a measurement reference signal resource set, wherein whether the transmission filters of different measurement reference signal resources in the measurement reference signal resource set are the same is determined by the first communication node according to signaling sent by the second communication node; measurement reference signal resources in a measurement reference signal resource set, wherein the at least one measurement reference signal resource is determined by the first communication node in the measurement reference signal resource set, and the information of the at least one measurement reference signal resource is sent by the first communication node to the second communication node; and measurement reference signal resources for which the first communication node needs to feed back channel quality information to the second communication node.

[0083] In one embodiment, channel quality includes at least one of RSRP, Reference Signal Receiving Quality (RSRQ), and Signal to Interference plus Noise Ratio (SINR).

[0084] Figure 3 is a flowchart of an information determination method provided in one embodiment. This method can be applied to a second communication node, which can be a network-side node such as a base station. It should be noted that technical details not described in detail in this embodiment can be found in any of the above embodiments. As shown in Figure 3, the method provided in this embodiment includes steps 210 and 220.

[0085] In 210, a beam measurement reference signal is transmitted in the beam measurement reference signal resource.

[0086] In step 220, channel state information sent by a first communication node is received. The channel state information is determined by the first communication node based on the sub-band parameters of the beam measurement reference signal resource.

[0087] A frequency domain bandwidth includes at least one sub-band, a sub-band includes at least one physical resource block, and a frequency domain bandwidth is a serving cell or a bandwidth portion.

[0088] In one embodiment, the channel state information includes at least one of the following: channel quality information of a beam measurement reference signal resource in each subband of more than one subband; channel quality information of a beam measurement reference signal resource in one subband; at least one beam measurement reference signal resource indication information corresponding to each subband in more than one subband; at least one combined indication information, wherein each combined indication information indicates a beam measurement reference signal resource in one subband; subband parameters corresponding to a beam measurement reference signal resource; subband parameters corresponding to a set of beam measurement reference signal resources; broadband channel quality of a beam measurement reference signal resource and information reflecting the relationship between the subband channel quality of the beam measurement reference signal resource in different subbands; broadband channel quality of a beam measurement reference signal resource, wherein the broadband channel quality is a weighted average of the channel quality of the beam measurement reference signal resource in different subbands, wherein each subband corresponds to a weighted value.

[0089] Figure 4 is a flowchart of an information determination method provided in one embodiment. This method can be applied to a second communication node, which can be a network-side node such as a base station. It should be noted that technical details not described in detail in this embodiment can be found in any of the above embodiments. As shown in Figure 4, the method provided in this embodiment includes steps 310 and 320.

[0090] In step 310, the parameter configuration of the beam measurement reference signal resource is determined based on the sub-band parameters of the beam measurement reference signal resource.

[0091] In step 320, the parameter configuration is sent to the first communication node.

[0092] A frequency domain bandwidth includes at least one subband, a subband includes at least one PRB, and a frequency domain bandwidth is a serving cell or a BWP.

[0093] In one embodiment, the parameter configuration of the beam measurement reference signal resource includes the configuration of at least one of the following parameters: the time-domain repetition number of the beam measurement reference signal resource, the parameters of the beam measurement reference signal resource set, the repetition transmission indication parameter corresponding to the beam measurement reference signal resource set, the indication information of whether the first communication node reports the channel state information obtained based on the beam measurement reference signal resource set to the second communication node, and the capability information corresponding to the beam measurement reference signal resource, wherein the beam measurement reference signal resource set includes the beam measurement reference signal resource.

[0094] The following examples illustrate the information determination method, signal transmission method, and parameter configuration transmission method of this application. In these examples, the first communication node is a terminal, and the second communication node is a base station. However, this application does not exclude the possibility that the first communication node is a base station and the second communication node is a terminal.

[0095] Option 1: The parameter configuration of the beam measurement reference signal resources includes the repeat transmission indication parameters corresponding to the beam measurement reference signal resource set. The terminal determines the repeat transmission indication parameters based on the sub-band parameters, or determines the sub-band parameters based on the repeat transmission indication parameters, or determines that the sub-band parameters and repeat transmission indication parameters satisfy an agreed-upon rule.

[0096] The repeat transmission indication parameter indicates repeat transmission, meaning that the spatial transmission filters corresponding to different beam measurement reference signal resources in the beam measurement reference signal resource set are the same; the repeat transmission indication parameter indicates non-repeated transmission, meaning that the spatial transmission filters corresponding to different beam measurement reference signal resources in the beam measurement reference signal resource set are different.

[0097] Option 1-1: When the repetitive transmission indication parameter of the beam measurement reference signal resource set is configured to non-repetitive transmission, the PRB sets occupied by different measurement reference signal resources in the beam measurement reference signal resource set can be different.

[0098] The base station configures a CSI-RS resource set for the terminal and sets the repetition indication parameter to off (i.e., the repetition parameter is configured to not be repetitive). This means that the terminal assumes that the transmission beams corresponding to different CSI-RS resources in this CSI-RS resource set are not the same. In this case, the PRB sets occupied by different CSI-RS resources in this CSI-RS resource set can be different.

[0099] In some scenarios, the terminal selects one or more CSI-RS resources and provides the index information of the selected CSI-RS resources. During transmit beam training in this case, even the same transmit beam can have different reception performance in different subbands. Therefore, in transmit beam training, if at least one of the transmit beam index and subband index is different for two measurement reference signal resources, they can be considered different transmit beams. In this case, each CSI-RS resource corresponds to a combination of a transmit beam index and a subband index. The terminal provides the base station with the index of the selected CSI-RS resource, allowing the base station to determine which combination of transmit beam index and subband index is optimal.

[0100] Scheme 1-2: When the repeat transmission indication parameter is configured to repeat transmission, different measurement reference signal resources in the beam measurement reference signal resource set are located in the same subband; when the repeat transmission indication parameter is configured to repeat transmission, all beam measurement reference signal resources in the beam measurement reference signal resource set correspond to the same subband parameter.

[0101] The base station configures a CSI-RS resource set for the terminal and sets the repetition indication parameter to "on" (i.e., the repetition parameter is configured for repetitive transmission). This means the terminal assumes that different CSI-RS resources within this CSI-RS resource set correspond to the same transmit beam. In this case, it is required that the different CSI-RS resources within the CSI-RS resource set occupy the same PRB set. This is because the terminal needs to perform receive beam training in this scenario. If the different CSI-RS resources within the CSI-RS resource set occupy different PRB sets, the terminal cannot assume the transmit beams are the same. Receive beam training is performed by polling the receive beam while keeping the transmit beam constant.

[0102] Scheme 1-3: When a beam measurement reference signal resource set includes at least two measurement reference resources located in different subbands, and the repeat transmission indication parameter in the beam measurement reference signal resource set is configured for repeat transmission, the channel state information includes indication information of the measurement reference resource selected by the first communication node in the beam measurement reference signal resource set, and the first communication node sends the channel state information to the second communication node; when different beam measurement reference signal resources in the beam measurement reference signal resource set are located in the same subband, and the repeat transmission indication parameter in the beam measurement reference signal resource set is configured for repeat transmission, the first communication node does not send the channel state information to the second communication node.

[0103] The base station configures a CSI-RS resource set for the terminal and sets the repetition indication parameter to "on". This means the terminal assumes that different CSI-RS resources in this CSI-RS resource set correspond to the same transmit beam. If different CSI-RS resources in this CSI-RS resource set occupy the same PRB set, the terminal does not report the selected CSI-RS resource index from this CSI-RS resource set; that is, the terminal only trains the receive beam and does not report channel state information. If different CSI-RS resources in this CSI-RS resource set occupy different PRB sets, the terminal reports the selected CSI-RS resource index from this CSI-RS resource set. In this case, the terminal only assumes that the base station's transmit beams corresponding to different CSI-RS resources in this CSI-RS resource set are the same, but the matching degree between this same transmit beam and the channel differs in different subbands. Therefore, the terminal needs to report the selected CSI-RS resource index, i.e., inform the base station which subband's channel best matches the base station's transmit precoding. Although the terminal can train the receiving beam by polling the receiving beam in this case, for example, assuming that the receiving beams on different sub-bands are not much different, the channel quality is different for the same base station transmitting beam and terminal receiving beam pair on different sub-bands.

[0104] Scheme 1-4: The channel state information includes at least one of the following: group index indication information of the measurement reference signal resource group selected by the first communication node from multiple measurement reference signal resource groups, and the channel quality corresponding to each group in the multiple measurement reference signal resource groups; wherein, a beam measurement reference signal resource set includes multiple beam measurement reference signal resource groups, and the beam measurement reference signal resources included in each beam measurement reference signal resource group occupy different time domain positions and occupy the same subband; the beam measurement reference signal resources in different beam measurement reference signal resource groups occupy different time domain positions and occupy different subbands.

[0105] The base station configures a CSI-RS resource set for the terminal. This CSI-RS resource set includes multiple groups. The CSI-RS resources in each group are located at different time domain locations but occupy the same PRB set. CSI-RS resources in different groups are located at different time domain locations and occupy different PRB sets. The terminal assumes that the base station's transmit beams correspond to the same CSI-RS resources within this CSI-RS resource set, and reports the CSI-RS group index. Thus, for CSI-RS resources within the same group, the terminal can perform receive beam training for a sub-band. For the receive performance of CSI-RS resources in different groups, the group index reported by the terminal indicates the terminal's best receive performance on the PRB set corresponding to that group index. The terminal can also report which groups it can simultaneously receive from, meaning that the terminal can simultaneously generate the receive beams corresponding to the transmit beams in these groups.

[0106] Scheme 1-5: When the beam measurement reference signal resource set includes at least two beam measurement reference signal resources located in different subbands, the repeat transmission indication parameter cannot be configured to repeat transmission; when the beam measurement reference signal resource set includes at least two beam measurement reference signal resources located in different subbands, the repeat transmission indication parameter can only be configured to non-repeated transmission.

[0107] If different CSI-RS resources within a CSI-RS resource set occupy different PRB sets, the terminal cannot assume that the transmit beams of the base stations corresponding to these different CSI-RS resources are the same. In other words, the repetition setting for this CSI-RS resource set cannot be configured as "on" and must be configured as "off". In this case, "on" indicates that the terminal is performing transmit beam training, and "off" indicates that the terminal is performing receive beam training. The terminal cannot assume that the receive beams corresponding to different CSI-RS resources within this CSI-RS resource set are the same.

[0108] Scheme 1-6: When repetition is configured as "on" in a set of measurement reference signal resources, different measurement reference signal resources in the set can be located on the same time-domain symbol. These different resources can be located in different sub-bands. The terminal assumes that the base station transmits the same beam for different measurement reference signal resources in the set, such as a single radio frequency transmit beam. However, because the matching degree between the same transmit beam and the channel differs across sub-bands, the terminal still needs to provide the selected measurement reference signal resource index.

[0109] The aforementioned PRB set can also be replaced with subbands. If it is required that different CSI-RS resources in a CSI-RS resource set occupy the same subband, then the PRB sets occupied by different CSI-RS resources in this CSI-RS resource set may be different, as long as the occupied PRB sets belong to the same subband or the same subband set. For example, CSI-RS resource 1 occupies PRB1 and 2 in subband 1, and CSI-RS resource 2 occupies PRB2 and 3 in subband 1.

[0110] In schemes 1-1 to 1-5 above, the repetition parameter configured in a CSI-RS resource set is associated with (or satisfies a predetermined rule) the occupied PRB set between different CSI-RS resources in this CSI-RS resource set. In the embodiments of this application, the association of two pieces of information includes at least one of the following: one piece of information can be obtained from another piece of information; one piece of information can be obtained from the range of values ​​of another piece of information; the combination of values ​​of the two pieces of information satisfies a predetermined condition; or the configuration information of one piece of information includes a parameter related to the other piece of information.

[0111] In schemes 1-1 to 1-5 above, a CSI-RS resource occupies only the frequency domain resources of one sub-band and cannot occupy the frequency domain resources of more than one sub-band. Different CSI-RS resources are configured on different sub-bands. The sub-bands are obtained based on a set of sub-band division parameters, and different sub-bands include different sets of PRBs. Each sub-band includes consecutive PRBs, and each PRB in a frequency domain bandwidth is included in one sub-band. Based on a set of sub-band parameters, the frequency domain resources within a frequency domain bandwidth are divided into multiple sub-bands. Except for a few special sub-bands, each sub-band includes the same number of PRBs. Special sub-bands include at least the following: the starting sub-band, the ending sub-band, and the middle sub-band. Alternatively, as shown in Figure 5, a reference sub-band is determined, and the sub-band size is determined based on the distance between each sub-band and the reference sub-band, i.e., different sub-bands include different numbers of PRBs.

[0112] Option 2-1: Channel state information includes: channel quality information of a beam measurement reference signal resource in each subband of more than one subband.

[0113] The terminal determines the channel quality of a CSI-RS resource in different frequency domains. For example, it divides the PRB occupied by a CSI-RS resource in a BWP into multiple sub-bands, as shown in Figure 6. The frequency domain resources occupied by CSI-RS resource 1 are divided into multiple sub-bands, and the terminal reports the channel quality of CSI-RS resource 1 in each sub-band. Alternatively, the terminal selects some sub-bands, or the base station configures the selected sub-bands to the terminal via signaling, and the terminal reports the channel quality of the selected sub-bands. Channel quality can also be referred to as the reception performance of the reference signal, such as one or more of RSRP, RSRQ, and SINR. The above sub-band selection and / or configuration are determined separately for each CSI-RS resource or each set of CSI-RS resources. For example, the base station configures a set of CSI-RS resources for the terminal, which includes one or more CSI-RS resources, such as {CSI-RS resource 1, CSI-RS resource 2, CSI-RS resource 3}. The terminal reports the indication information of the selected one or more CSI-RS resources, as well as the channel quality of the selected CSI-RS resources in each sub-band. For example, the terminal selects CSI-RS resource 1 and CSI-RS resource 2. Then, for each selected CSI-RS resource, it reports the channel quality on each subband. As shown in Figure 7, the terminal needs to report RSRP11, RSRP21, and RSRP31, which are the channel quality of CSI-RS resource 1 on subbands 1 to 3, respectively. The terminal needs to report RSRP12, RSRP22, and RSRP32, which are the channel quality of CSI-RS resource 2 on subbands 1 to 3. Alternatively, as shown in Figure 8, the terminal determines the subband for each selected CSI-RS resource and then reports the channel quality on the selected subband. The number of subbands selected for each selected CSI-RS resource is the same (two in Figure 8). In another implementation, the number of subbands selected for each selected CSI-RS resource can be different.

[0114] Scheme 2-2: The channel state information includes at least one beam measurement reference signal resource indication information corresponding to each sub-band on more than one sub-band.

[0115] The base station requires the terminal to select and report its own CSI-RS resources for each subband. In this case, the terminal needs to report the selected CSI-RS resources for each subband separately. In some scenarios, for the selected CSI-RS resources in each subband, the terminal reports the channel quality corresponding to the selected CSI-RS resources in that subband, as shown in Figure 9. The shaded area in the figure represents the CSI-RS resources selected for each subband. In Figure 9, the number of CSI-RS resources selected for each subband is the same (2). In another implementation, the number of CSI-RS resources selected for each subband can also be different. For subbands that are not selected, the corresponding channel quality is not reported. For subbands without shaded areas in the figure, the terminal does not need to report the channel quality corresponding to the CSI-RS resource in that subband. Or, as shown in Figure 10, the terminal reports the selection of one subband (subband 2) and reports the channel quality corresponding to each CSI-RS resource in the selected subband.

[0116] Scheme 2-3: When the channel state information includes at least one combination indication information, the method further includes: determining a set of candidate combinations; determining at least one candidate combination from the set of candidate combinations; and reporting the channel quality information corresponding to each candidate combination among the determined at least one candidate combination to the second communication node; wherein, the channel quality information corresponding to each candidate combination is the channel quality information of the beam measurement reference signal resource in the corresponding candidate combination on the subband of the corresponding candidate combination; one beam measurement reference signal resource occupies at least one subband, and one beam measurement reference signal resource on one subband is called a candidate combination.

[0117] When the channel state information includes multiple combination indication information, the channel state information includes at least one set of candidate combinations; beam measurement reference signal resources in the same set of candidate combinations can be simultaneously received by the first communication node; and / or, beam measurement reference signal resources in different sets of candidate combinations can be simultaneously received by the first communication node.

[0118] The terminal selects combinations of CSI-RS resources and subbands, as shown in Figure 11. There are a total of 9 combinations of CSI-RS resources and subbands, namely 3 CSI-RS resources and 3 subbands for each CSI-RS resource. The terminal selects one or more candidate combinations from the set of candidate combinations (i.e., the 9 combinations of CSI-RS resources and subbands). In some scenarios, the terminal provides feedback on the corresponding channel quality for each selected candidate combination. In this case, some subbands may not have any CSI-RS resources selected, or some CSI-RS resources may not have any subbands selected. The selection object changes from CSI-RS resources to combinations of CSI-RS resources and subbands. In some scenarios, the terminal can also provide feedback on one or more sets of CSI-RS resource and subband combinations. CSI-RS data in the same set of CSI-RS resource and subband combinations can be received simultaneously by the terminal, while CSI-RS data in different sets of CSI-RS resource and subband combinations cannot be received simultaneously by the terminal. The terminal can receive CSI-RS resources and subbands from different groups simultaneously, but the terminal cannot receive CSI-RS resources and subbands from the same group simultaneously.

[0119] Option 2-4: Determine the sub-band parameters corresponding to the beam measurement reference signal resource and the sub-band parameters corresponding to the beam measurement reference signal resource set according to the signaling information or agreed rules; when the beam measurement reference signal resource set includes the beam measurement reference signal resource, the sub-band determined according to the sub-band parameters corresponding to the beam measurement reference signal resource set belongs to the sub-band set determined according to the sub-band parameters corresponding to the beam measurement reference signal resource.

[0120] The base station configuration requires CSI-RS resources for beam training. For example, this configuration is at the CSI-RS resource set level, meaning beam training is performed based on a single CSI-RS resource set. As shown in Figure 12, each CSI-RS resource is configured with its own PRB set, and then one or more subbands are configured at the CSI-RS resource set level. This allows the terminal to perform beam training only on the selected subband for this CSI-RS resource set. In some scenarios, only one subband is configured for a CSI-RS resource set, allowing the terminal to perform beam training on that subband because different subbands correspond to different beam training results. In some scenarios, the subband selected for a CSI-RS resource set belongs to the subband set configured for each CSI-RS resource in that set. In some scenarios, the subband selected for a CSI-RS resource set belongs to the subband set configured for each CSI-RS resource in that set and also belongs to the subband set in the currently active BWP. For example, CSI-RS resource 1 has subbands {2,3} in the currently active BWP. As shown in Figure 12, different CSI-RS resource sets can select different CSI-RS resources and different subbands. In some scenarios, for such a CSI-RS resource set, the base station can further configure whether the transmission beams corresponding to different CSI-RS resources in this CSI-RS resource set are the same or different. For example, configuring it as "on" means they are the same, and configuring it as "off" means they are different. In this case, beam training can be performed separately for each CSI-RS resource set. If the resources occupied by this CSI-RS conflict with those of PDSCH / PDCCH, the available resources of PDSCH / PDCCH are determined based on the subbands configured in the CSI-RS set, rather than based on the information configured in the CSI-RS resource. This is because for a CSI-RS resource, the terminal does not receive CSI-RS from all frequency domain resources configured in this CSI-RS resource, but only receives CSI-RS on the subbands configured in the resource set where this CSI-RS resource is located. For example, if CSI-RS resource 1 is only located in CSI-RS resource set 1 at a certain time, then at that time, the terminal only receives CSI-RS on CSI-RS resource 1 on subband 1. However, the RE occupied by CSI-RS resource 1 on subband 1 cannot be occupied by PDCCH / PDSCH. On subband 2 and 3, the PDCCH / PDSCH corresponding to the RE of CSI-RS resource 1 can be occupied by PDCCH / PDSCH.

[0121] Scheme 2-5: Determine the subband parameters corresponding to the beam measurement reference signal resource set according to signaling, information or agreed rules; determine the PRB set occupied by each beam measurement reference signal resource in the beam measurement reference signal resource set according to the subband parameters; wherein, the beam measurement reference signal resource set includes at least one beam measurement reference signal resource; the subband parameters include PRB index indication information or subband index information.

[0122] The first parameter configuration information of each measurement reference signal resource in the beam measurement reference signal resource set includes the RE position pattern occupied by the corresponding beam measurement reference signal resource in a PRB, but does not include the configuration information of the PRB set occupied by the corresponding measurement reference signal resource; and / or the RE position pattern occupied by each beam measurement reference signal resource in the beam measurement reference signal resource set is the same in each of the multiple PRBs occupied.

[0123] In CSI-RS resources, only the pattern of the CSI-RS is configured, such as the REs occupied in one or more PRBs. These one or more PRBs are called CSI-RS resource pattern units. The set of PRBs occupied by the CSI-RS is configured in the CSI-RS set where the CSI-RS resource is located. The set of PRBs occupied by the CSI-RS in the CSI-RS resource set includes more than one CSI-RS pattern unit. The pattern of the CSI-RS resource is repeated in multiple CSI-RS pattern units, that is, the relative position of the REs occupied in each unit is the same in each unit.

[0124] Scheme 2-6: The channel state information may include the wideband channel quality of a beam measurement reference signal resource, wherein the wideband channel quality is a weighted average of the channel quality of the measurement reference signal resource in different subbands, wherein each subband in the different subbands corresponds to a weighted value.

[0125] Broadband channel quality is calculated using the following formula: Where B represents the number of subbands occupied by the beam measurement reference signal resource, i is the subband index, and a i Q represents the weighted value corresponding to subband i. i This indicates the channel quality of the beam measurement reference signal resource on the occupied subband i.

[0126] For a CSI-RS resource, feedback is provided for a wideband channel quality. However, determining this wideband channel quality is not the average of the channel quality of this CSI-RS resource across all subbands, but rather a weighted average of the CSI-RS resource across different subbands with different weighting factors. For example... 0 < a i ≤1, where a i The following can be obtained through one or more of the following methods: received base station signaling information, the index difference between subband i and the reference subband, and subband index i. The reference subband can be determined through one or more of the following methods: agreement between the base station and the terminal, notification from the base station to the terminal via signaling, or reporting from the terminal to the base station via signaling. For example, the larger the absolute value of the index difference between subband i and the reference subband, the greater the weighting value a on subband i. i The smaller.

[0127] Scheme 2-7: Determine the corresponding sub-band parameters for each beam measurement reference signal resource in a beam measurement reference signal resource set. The sub-band parameters are the starting positions for determining the beam measurement reference signal resource level.

[0128] For each CSI-RS resource, its sub-band division is determined separately. As shown above, the reason for the different beam patterns in different sub-bands is due to precoding quantization, as shown in formula (1-2), θ tx,m The larger θ is tx,m,k The greater the variation with subband, the greater the θ. Therefore, one CSI-RS resource corresponds to θ. tx,m,k0 The larger the θ, the greater the variation in its matching degree with the actual channel across different subbands. This is because different CSI-RS resources may correspond to different θ values. tx,m,k0 Therefore, different CSI-RS resources correspond to different subband parameters. Or θ tx,m,k0 The mapping relationship between subband size and subband size is a piecewise increasing function. Several subband sizes are specified, and a corresponding subband size is configured for each CSI-RS resource or each CSI-RS resource group. In some scenarios, subbands are divided outwards from a reference subband, rather than from the lower frequency band to the upper frequency band, as shown in Figure 13. The subband bandwidth can also be non-uniform; the closer a subband is to the reference subband, the larger its bandwidth, and the farther away it is, the smaller its bandwidth, as shown in Figure 13. The sizes of each subband are obtained symmetrically outwards from the reference subband, where subband i and subband - i have the same size. The method for determining the subband is for the base station to configure subband parameters for each CSI-RS resource or each CSI-RS resource group. The subband parameters include at least one of the following parameters: subband size, reference subband position, and reference subband index.

[0129] Scheme 2-8: Channel state information may include subband parameters corresponding to a beam measurement reference signal resource, or broadband channel quality of a beam measurement reference signal resource and information reflecting the relationship between subband channel quality of a beam measurement reference signal resource in different subbands.

[0130] Information reflecting the relationship between subband channel quality in different subbands of a beam measurement reference signal resource includes at least one of the following: the subband index corresponding to the highest subband channel quality; the variance of multiple subband channel qualities.

[0131] The terminal reports broadband channel quality and parameters reflecting the relationship between sub-band channel quality in different sub-bands, such as reporting a reference sub-band index. For example, a CSI-RS resource has the highest channel quality value on its reference sub-band. The terminal further reports at least one of the following: the variance of the channel quality of this CSI-RS resource across multiple sub-bands, and the sub-band parameters of this CSI-RS resource. The sub-band parameters include at least one of the following: sub-band size, reference sub-band position, and reference sub-band index. The terminal reports sub-band parameters because the transmission angle of this CSI-RS resource may correspond to θ. tx,m,k The change with the subband is not significant because θ tx,m It's relatively small, but the receiving angle corresponding to θ of this CSI-RS resource... rx,m,k The changes with the subband are more pronounced because θ rx,m The sub-band parameters are relatively large, and only the terminal knows the receiving beam, so the sub-band parameters need to be reported by the terminal.

[0132] Scheme 2-9: The first information also includes capability information; the first communication node reports the capability information to the second communication node, wherein the capability information is specific to a single sub-band.

[0133] The capability information includes the maximum number of beam measurement reference signal resources included in a beam measurement reference signal resource set; wherein, the repetition indication parameter of a beam measurement reference signal resource set is configured for repetition.

[0134] The parameter configuration of the beam measurement reference signal resource includes the configuration of at least one of the following parameters: the time-domain repetition count of the beam measurement reference signal resource, the parameters of the beam measurement reference signal resource set, the repetition transmission indication parameter corresponding to the beam measurement reference signal resource set, the indication information of whether the first communication node reports the channel state information obtained based on the beam measurement reference signal resource set to the second communication node, and the capability information corresponding to the beam measurement reference signal resource; wherein the beam measurement reference signal resource set includes the beam measurement reference signal resource.

[0135] The terminal feedback includes parameters reflecting the degree of beam dispersion in its received signal. For example, the terminal may report the number of time-domain repetitions required for a CSI-RS resource with the same transmitting beam, or it may report the capability information of the number of CSI-RS resources included in a CSI-RS resource set. This means that different CSI-RS resources in a CSI-RS resource set correspond to base stations with the same transmitting beam, and that different CSI-RS resources in a CSI-RS resource set occupy different time-domain resources, or different time-domain resources and different frequency-domain resources. (See Figure 14). Alternatively, the terminal may feedback at least one of the following: subband parameters, the number of CSI-RS resources included in a CSI-RS resource set within the same subband, where different CSI-RS resources in a CSI-RS resource set correspond to the same transmitting beam. (See Figure 14). The terminal can also report the number of CSI-RS resource groups included in a CSI-RS resource set, where different CSI-RS resources within the same group occupy the same subband and different time-domain resources, and CSI-RS resources in different groups occupy different subbands and different time-domain resources. Each CSI-RS resource set is used to train the corresponding receive beam on a subband. Alternatively, it represents the number of CSI-RS resources included in a CSI-RS resource set on a subband.

[0136] Option 2-10: The terminal is configured with a CSI-RS resource set, wherein different CSI-RS resources in the CSI-RS resource set are located in different frequency domain bandwidths and different time domain positions, or different CSI-RS resources in this CSI-RS resource set are the same CSI-RS resource at different time domain positions with different frequency domain positions extracted.

[0137] Option 2-11: The parameter configuration of the beam measurement reference signal resource may include the configuration of the time-domain repetition number of the beam measurement reference signal resource.

[0138] The base station configures a CSI-RS resource set for the terminal, where the time-domain repetition count of each CSI-RS resource is equal to the number of subbands corresponding to that CSI-RS resource. Alternatively, the time-domain repetition count of each CSI-RS resource is equal to the product of the number of subbands corresponding to that CSI-RS resource and an integer. The time-domain repetition count of one CSI-RS resource represents at least one of the following: the number of times a CSI-RS resource is repeatedly transmitted in a time unit, or the number of times it is repeatedly transmitted in a period; the number of time-domain symbols occupied by a CSI-RS resource in a time unit, or the number of time-domain symbols occupied in a period. Alternatively, the number of CSI-RS resources included in a CSI-RS resource set is equal to the number of subbands determined by the subband parameters corresponding to that CSI-RS resource set. Alternatively, the number of CSI-RS resources included in a CSI-RS resource set is equal to the product of the number of subbands determined by the subband parameters corresponding to that CSI-RS resource set and an integer.

[0139] Scheme 2-12: The terminal reports which combinations of terminals can receive simultaneously, where each combination includes a CSI-RS resource and a subband index. Further, it is agreed that if the CSI-RS resource indexes in multiple combinations reported by the terminal are the same, this can also be referred to as which subband terminals can receive simultaneously. Further, it is agreed that if the subband indexes in multiple combinations reported by the terminal are the same, this can also be referred to as which CSI-RS resources on this subband can be received simultaneously.

[0140] Scheme 2-13: The channel state information includes a sub-band parameter corresponding to the beam measurement reference signal resource.

[0141] The terminal identifies a measurement reference signal resource and feeds back the corresponding sub-band parameters. For example, the base station configures a set of measurement reference signal resources for the terminal. The terminal selects one or more measurement reference signal resources and feeds back the corresponding sub-band parameters for each selected resource. Alternatively, the terminal can divide the selected measurement reference signal resources into multiple groups and feed back the corresponding sub-band division parameters for each group. The grouping principle of the measurement reference signal resources can be based on signaling notified by the base station, terminal feedback, or agreed-upon rules. For example, the base station may agree on or notify the measurement reference signal resources included in a group, and the terminal may select measurement reference signal resources belonging to one group or different groups. Alternatively, the terminal and base station may agree on a correspondence between a measurement reference signal resource index range and a group index. For example, it may be agreed that measurement reference signal resources with indices from 0 to Z belong to one group, those with indices from Z+1 to 2Z-1 belong to the second group, those with indices from 2Z to 3Z-1 belong to the third group, and so on, where X is an agreed-upon value or a value notified by the base station.

[0142] Scheme 2-14: A beam measurement reference signal resource corresponds to at least one of the following on different subbands: one or more types of channel large-scale parameters, quasi-co-located reference signals, channel quality, and reference channel quality; a beam measurement reference signal resource does not satisfy quasi-co-located relationships with respect to one type of quasi-co-located parameters across different subbands; a BWP includes one or more subbands; a subband includes at least one channel state information subband, wherein each channel state information subband in the at least one channel state information subband corresponds to at least one of the following: precoding matrix indicator (PMI), channel quality indicator (CQI), where the channel quality corresponding to the CQI can be referred to as the second channel quality to distinguish it from the channel quality mentioned elsewhere in this application. The channel quality mentioned elsewhere in this application includes one or more of RSRP, SINR, and RSRQ, and the channel quality mentioned elsewhere in this application can be referred to as the first channel quality to distinguish it from the second quality; wherein different subbands correspond to a set of first channel quality, and different channel state information subbands correspond to a set of second channel quality indicator information (CQI). CQI is a coding and modulation indication information that reflects the bit error rate (BLER) of the data signal on the channel of the measurement reference signal being lower than a predetermined value, based on certain precoding assumptions.

[0143] For each beam measurement reference signal resource in a set of beam measurement reference signal resources, determine the corresponding sub-band parameters.

[0144] A measurement reference signal (MRS) can correspond to a set of CSI (Channel State Information) parameter divisions and a set of sub-band parameters as described above. One CSI sub-band is located within another sub-band, and a sub-band includes one or more CSI sub-bands. That is, a MRS resource corresponds to at least one of the following on different sub-bands: channel quality, quasi-co-address parameters. A MRS resource also corresponds to one of the following indicators on different CSI sub-bands: CQI, precoding. For example, for a CSI-RS resource, for each sub-band or sub-band group, a reference CQI value is independently reported. This reference CQI value corresponds to all CSI sub-bands within this sub-band, or to a designated CSI sub-band within this sub-band. Other CSI sub-bands within this sub-band report differential CQIs, and the reference CQI value for these differential CQIs is the differential CQI value of this sub-band. The reference CQI value for a sub-band can be either an absolute value or a differential value. For example, there might be a reference sub-band where the reference CQI value is reported as an absolute value, while the reference CQI values ​​for other sub-bands are reported as differential values. The reference value for the differential CQI is the reference CQI value on the reference sub-band. In other words, each sub-band corresponds to one reference CQI value. Multiple CSI sub-bands within a sub-band are reported differentially, while the reference CQI values ​​between sub-bands can be reported as either absolute values ​​or differential values. For example, sub-band 1 includes CSI sub-bands {1,2,3}, sub-band 2 includes CSI sub-bands {4,5,6}, and sub-band 3 includes CSI sub-bands {7,8,9}. The CQI values ​​on CSI subbands 1, 4, and 7 are used as reference CQIs for subbands 1, 2, and 3, respectively. CSI subbands 2 and 3 are reported differentially based on CSI subband 1 (e.g., each differential CQI uses 2 bits). CSI subbands 5 and 6 are reported differentially based on CSI subband 4. CSI subbands 8 and 9 are reported differentially based on CSI subband 7. The CQI values ​​on CSI subbands 1, 4, and 7 can all be reported using absolute values, such as 6 bits per value. Alternatively, CSI subband 1 can be the reference subband, and CSI subbands 4 and 7 can be reported differentially based on CSI subband 1, but with a larger differential range, such as 4 bits per value. A wideband CQI can also be reported using absolute values, with the CQI values ​​on CSI subbands 1, 4, and 7 all reported differentially based on the wideband CQI. Alternatively, the reference CQI for each sub-band can be at the sub-band width level, and the CQI of each CSI sub-band within this sub-band is reported with reference to the CQI at this sub-band level. For example, for sub-band 1, a sub-band CQI is reported, which is the average or weighted average of the CQIs of CSI sub-bands 1, 2, and 3 within sub-band 1. The CSI sub-bands and the frequency domain units described in formulas (2-1) and (2-2) can be the same frequency domain units.

[0145] Option 2-15: The first information also includes capability information; the capability information is reported to the second communication node, wherein the capability information is for a single sub-band.

[0146] The capability information includes the maximum number of beam measurement reference signal resources included in a beam measurement reference signal resource set; wherein, the repeated transmission indication parameter of the beam measurement reference signal resource set is configured for repeated transmission.

[0147] The same CSI-RS resource can correspond to different receive beams at different frequency domain locations. On one hand, the same CSI-RS resource corresponds to different transmitter precoding on different frequency domain resources, and its best-matching path may be different, leading to different paths and angles of arrival at different frequency domain locations. However, because the receiver antenna is relatively small, its dispersion bandwidth in the frequency domain is larger than that of the transmitter. Therefore, the terminal may need to report at least one of the following information: information reflecting the number of antenna elements, information on the number of antenna elements corresponding to a receive beam, and information on the maximum number of beam measurement reference signal resources included in a beam measurement reference signal resource set. Therefore, the number of receive beams corresponding to the same RF transmit beam at the receiver is the original number multiplied by the dispersion bandwidth. When configuring QCL-RS, the base station configures the frequency domain resources, especially the receive beam. For example, if QCL-RS1 is used as the QCL-RS of DMRS, then the receive beam of QCL-RS should be the receive beam on the subband where DMRS is located.

[0148] In schemes 2-1 to 2-15 above, a CSI-RS resource occupies one or more subbands, and its matching degree with the channel varies at different subband locations. When a CSI-RS resource occupies multiple subbands, one approach is that a CSI-RS resource occupies one subband at a time and different subbands at different times; another approach is that a CSI-RS resource occupies multiple subbands at a single time.

[0149] Compared to Schemes 1-1 to 1-4, Schemes 2-1 to 2-15 can reduce reference signal configuration signaling, reduce terminal feedback overhead, and facilitate the utilization of frequency domain correlation of channel information in different frequency domains. Therefore, these schemes can also be used for beam training between different frequency domain bandwidths, achieving beam training for each frequency domain bandwidth while fully utilizing the correlation between beam training between different frequency domain bandwidths. However, Schemes 1-1 to 1-4 are more compatible with and can better utilize 5G NR beam training schemes compared to Schemes 2-1 to 2-15.

[0150] In the schemes 2-1 to 2-15 above, if the terminal selects multiple combinations, where each combination is a beam and sub-band combination, and one combination is a CSI-RS resource on a sub-band, and a CSI-RS resource forms different combinations on different sub-bands, differential feedback can be considered to feed back the channel quality corresponding to multiple combinations in order to reduce feedback overhead. This involves determining the reference combination. After determining the reference combination, the difference between the channel quality of other combinations and the channel quality of the reference combination is determined, and the terminal feeds back the channel quality difference information. Therefore, the following schemes can be proposed:

[0151] Option A: For each of the selected CSI-RS resources, a reference combination is determined, i.e., a sub-band of each CSI-RS resource is selected as the reference sub-band. For this reference sub-band, the terminal feeds back the absolute channel quality. For the other sub-bands selected within this CSI-RS resource, the terminal feeds back the differential channel quality, which is the difference between the channel quality of the other sub-bands and the channel quality of the reference sub-band. In this case, each CSI-RS resource corresponds to a set of combinations, with differential feedback for combinations within the group. Further, a reference CSI-RS resource can be selected from the multiple CSI-RS resources. The channel quality of the reference sub-bands in the other CSI-RS resources can also be further differentially fed back, i.e., the difference between the reference channel quality of each CSI-RS resource and the reference channel quality of the reference CSI-RS resource. This constitutes a two-level differential feedback: intra-group differential feedback plus inter-group differential feedback. The reference sub-band index information in each CSI-RS resource can be agreed upon, or it can be explicitly or implicitly fed back to the base station by the terminal.

[0152] Option B: Similar to Option A, except that in this case, grouping is performed based on each sub-band. Each sub-band forms a group, and each group contains reference channel quality information. Furthermore, differential feedback between groups is also possible. The reference CSI-RS resource index information in each sub-band can be agreed upon, or it can be explicitly or implicitly fed back to the base station by the terminal.

[0153] Option C: Among all combinations, only one reference combination is determined, and the differential channel quality of other combinations is determined based on this reference combination. The index information of the reference combination can be agreed upon, such as the first combination reported by the terminal, or explicitly or implicitly reported by the terminal to the base station. For example, the terminal reports the CSI-RS resource index and subband index corresponding to the reference combination.

[0154] In one implementation, the base station configures whether one or more of the aforementioned enhancement schemes are enabled in a frequency domain bandwidth, i.e., whether the dispersion function is enabled. If the dispersion function is enabled in this frequency domain bandwidth, the aforementioned enhancement functions are supported in this frequency domain bandwidth; otherwise, the aforementioned enhancement functions are not supported in this frequency domain bandwidth. This configuration information can be in a broadcast message or a system message, in which case this information is cell-specific. Of course, this configuration information can also be user-specific, in which case this information is user-specific. Here, a frequency domain bandwidth is one of the following: one Serving Cell, one BWP.

[0155] In another implementation, whether to enable one or more of the above enhancement schemes, i.e., whether to enable the dispersion function, is determined based on at least one of the following: the magnitude of the carrier frequency where the reference signal is located, and the magnitude of the bandwidth occupied by the reference signal. For example, the dispersion function is enabled if the carrier frequency is greater than a certain value and / or the bandwidth is greater than a predetermined value; otherwise, the dispersion function is not enabled. The dispersion function refers to one or more of the above enhancement schemes.

[0156] The above mainly discussed the impact of dispersion phenomena on downlink beam training and enhancement schemes. Similarly, it can also be applied to uplink beam training. For example, the base station indicates the subband parameters corresponding to the uplink measurement reference signal resource. At any given time, for an uplink measurement reference signal, the terminal can only transmit this uplink measurement signal on one subband. An uplink measurement reference signal needs to be transmitted using different uplink transmission beams on different subbands. The terminal can report to the base station the number of antenna elements used to transmit a transmission beam or an uplink measurement reference signal resource.

[0157] In this application, a CSI-RS resource is configured with a set of parameters for a CSI-RS signal. These parameters may include at least one of the following: time-domain resources, frequency-domain resources, code-domain resources, and power parameters. The CSI-RS signal occupies the resources configured in the CSI-RS resource.

[0158] In one embodiment, the subband parameters include at least one of the following: subband size, starting position of the first subband, number of subbands, index type of physical resource blocks (PRBs) included in the subband, and position of the reference subband; wherein the index type includes an index obtained based on the common reference position of the carrier or an index of a PRB in the set of PRBs included in the BWP.

[0159] In this application, a frequency domain bandwidth includes one or more sub-bands. One of the frequency domain bandwidths is the frequency domain bandwidth included in a Serving Cell, or the frequency domain bandwidth included in a BWP. There is at least one case in which the frequency domain bandwidth includes more than one sub-band. For example, for CSI-RS resource 1, the frequency domain bandwidth includes one sub-band. For CSI-RS resource 2, the frequency domain bandwidth includes more than one sub-band.

[0160] This application also provides an information determination device. Figure 15 is a schematic diagram of the structure of an information determination device provided in an embodiment. As shown in Figure 15, the information determination device includes: a parameter determination module 410, configured to determine sub-band parameters of a beam measurement reference signal resource; and an information determination module 420, configured to determine first information corresponding to the beam measurement reference signal resource based on the sub-band parameters, wherein the first information includes at least one of the following: channel state information corresponding to the beam measurement reference signal resource and parameter configuration corresponding to the beam measurement reference signal resource; wherein a frequency domain bandwidth includes at least one sub-band, a sub-band includes at least one PRB, and a frequency domain bandwidth is a serving cell or a BWP.

[0161] In one embodiment, the channel state information includes at least one of the following: channel quality information of a beam measurement reference signal resource in each subband of more than one subband; channel quality information of a beam measurement reference signal resource in one subband; at least one beam measurement reference signal resource indication information corresponding to each subband of more than one subband; at least one combined indication information, wherein each combined indication information indicates a beam measurement reference signal resource in one subband; subband parameters corresponding to a beam measurement reference signal resource; subband parameters corresponding to a set of beam measurement reference signal resources; broadband channel quality of a beam measurement reference signal resource and information reflecting the relationship between the subband channel quality of the beam measurement reference signal resource in different subbands; broadband channel quality of a beam measurement reference signal resource, wherein the broadband channel quality is a weighted average of the channel quality of the beam measurement reference signal resource in different subbands, wherein each subband in the different subbands corresponds to a weighted value.

[0162] In one embodiment, the channel state information includes at least one of the following: group index indication information of the measurement reference signal resource group selected by the first communication node from a plurality of measurement reference signal resource groups, and the channel quality corresponding to each of the plurality of measurement reference signal resource groups.

[0163] A beam measurement reference signal resource set includes multiple beam measurement reference signal resource groups. The beam measurement reference signal resources included in each beam measurement reference signal resource group occupy different time domain positions and occupy the same subband. The beam measurement reference signal resources in different beam measurement reference signal resource groups occupy different time domain positions and occupy different subbands.

[0164] In one embodiment, one of the beam measurement reference signal resources occupies only the frequency domain resources of one subband at any given time.

[0165] In one embodiment, when the channel state information includes at least one of the combination indication information, the apparatus further includes: a set determination module configured to determine a set of candidate combinations; a combination determination module configured to determine at least one candidate combination from the set of candidate combinations; and a reporting module configured to report channel quality information corresponding to each of the determined at least one candidate combination to a second communication node; wherein the channel quality information corresponding to each candidate combination is the channel quality information of the beam measurement reference signal resource in the corresponding candidate combination on the subband of the corresponding candidate combination; one beam measurement reference signal resource occupies at least one subband, and one beam measurement reference signal resource on one subband is called a candidate combination.

[0166] In one embodiment, when the channel state information includes multiple combinations of indication information, the channel state information includes at least one set of candidate combinations; beam measurement reference signal resources in candidate combinations in the same group can be simultaneously received by the first communication node; and / or, beam measurement reference signal resources in candidate combinations in different groups can be simultaneously received by the first communication node.

[0167] In one embodiment, the broadband channel quality is calculated according to the following formula: Where B represents the number of subbands occupied by the beam measurement reference signal resource, i is the subband index, and a i Q represents the weighted value corresponding to subband i. i This indicates the channel quality of the beam measurement reference signal resource on the occupied subband i.

[0168] In one embodiment, the information reflecting the relationship between the subband channel quality of the beam measurement reference signal resource in different subbands includes at least one of the following: the subband index corresponding to the largest subband channel quality; the variance of the multiple subband channel qualities.

[0169] In one embodiment, the first information further includes capability information; the method further includes: reporting the capability information to a second communication node, wherein the capability information is specific to a single subband.

[0170] In one embodiment, the capability information includes information on the maximum number of beam measurement reference signal resources included in a beam measurement reference signal resource set; wherein, the retransmission indication parameter of the beam measurement reference signal resource set is configured for retransmission.

[0171] In one embodiment, the parameter configuration of the beam measurement reference signal resource includes the configuration of at least the following parameters: the time-domain repetition count of the beam measurement reference signal resource, the parameters of the beam measurement reference signal resource set, the repetition transmission indication parameter corresponding to the beam measurement reference signal resource set, the indication information of whether the first communication node reports the channel state information obtained based on the beam measurement reference signal resource set to the second communication node, and the capability information corresponding to the beam measurement reference signal resource; wherein the beam measurement reference signal resource set includes the beam measurement reference signal resource.

[0172] In one embodiment, the device further includes: a second information determination module, configured to determine second information, wherein the second information is associated with the sub-band parameters; the second information includes at least one of the following: the channel state information, the capability information of the first communication node, the first parameter configuration information of the beam measurement reference signal resource, and the second parameter configuration information of the beam measurement reference signal resource set.

[0173] In one embodiment, the parameter determination module 410 is configured to: determine a sub-band parameter set corresponding to a beam measurement reference signal resource set; wherein the beam measurement reference signal resource set includes at least one beam measurement reference signal resource; the sub-band parameter set corresponding to the beam measurement reference signal resource set includes sub-band parameters corresponding to each beam measurement reference signal resource in the beam measurement reference signal resource set; and the sub-band parameter set corresponding to the beam measurement reference signal resource set and the second parameter configuration information corresponding to the beam measurement signal resource set satisfy a predetermined rule.

[0174] In one embodiment, the second parameter configuration information includes a repeated transmission indication parameter; the repeated transmission indication parameter indicates repeated transmission, meaning that the spatial transmission filters corresponding to different beam measurement reference signal resources in the beam measurement reference signal resource set are the same; the repeated transmission indication parameter indicates non-repeated transmission, meaning that the spatial transmission filters corresponding to different beam measurement reference signal resources in the beam measurement reference signal resource set are different.

[0175] In one embodiment, the predetermined rule between the repeat transmission indication parameter and the subband parameter set includes at least one of the following: when the repeat transmission indication parameter is configured for repeat transmission, different measurement reference signal resources in the beam measurement reference signal resource set are located in the same subband; when the beam measurement reference signal resource set includes at least two beam measurement reference signal resources located in different subbands, the repeat transmission indication parameter cannot be configured for repeat transmission; when the beam measurement reference signal resource set includes at least two beam measurement reference signal resources located in different subbands, the repeat transmission indication parameter can only be configured for non-repeated transmission; or when the repeat transmission indication parameter is configured for repeat transmission, all beam measurement reference signal resources in the beam measurement reference signal resource set correspond to the same subband parameter.

[0176] In one embodiment, the second parameter configuration information includes indication information on whether the first communication node reports channel state information obtained based on the beam measurement reference signal resource set to the second communication node.

[0177] In one embodiment, the predetermined rule between the indication information and the subband parameters includes at least one of the following: when the beam measurement reference signal resource set includes at least two beam measurement reference signal resources located in different subbands, the indication information cannot be configured not to be reported; when the beam measurement reference signal resource set includes at least two beam measurement reference signal resources located in different subbands, the indication information is configured to be reported.

[0178] In one embodiment, the parameter determination module 410 is configured to: determine subband parameters corresponding to the beam measurement reference signal resource set according to signaling, information, or agreed rules; determine the PRB set occupied by each beam measurement reference signal resource in the beam measurement reference signal resource set according to the subband parameters; wherein the beam measurement reference signal resource set includes at least one beam measurement reference signal resource; and the subband parameters include PRB index indication information or subband index information.

[0179] In one embodiment, at least one of the following conditions is met: the first parameter configuration information of each measurement reference signal resource in the beam measurement reference signal resource set includes the RE position pattern occupied by the corresponding beam measurement reference signal resource in a PRB, but does not include the configuration information of the PRB set occupied by the corresponding measurement reference signal resource; the RE position pattern occupied by each beam measurement reference signal resource in the beam measurement reference signal resource set is the same in each of the multiple PRBs occupied; each beam measurement reference signal resource in the beam measurement reference signal resource set occupies one PRB for every X PRBs in the PRB set indicated by the sub-band parameters, where X is an integer greater than or equal to 1, and when X is greater than 1, the first parameter configuration information of each beam measurement reference signal resource in the beam measurement reference signal resource set includes the starting position of the PRB occupied by the corresponding beam measurement reference signal resource.

[0180] In one embodiment, the parameter determination module 410 is configured to: determine the sub-band parameters corresponding to the beam measurement reference signal resource and the sub-band parameters corresponding to the beam measurement reference signal resource set according to signaling information or agreed rules; when the beam measurement reference signal resource set includes the beam measurement reference signal resource, the sub-band determined according to the sub-band parameters corresponding to the beam measurement reference signal resource set belongs to the sub-band set determined according to the sub-band parameters corresponding to the beam measurement reference signal resource; wherein, one beam measurement reference signal resource occupies one or more sub-bands.

[0181] In one embodiment, determining the channel state information based on subband parameters includes at least one of the following: when a beam measurement reference signal resource set includes at least two measurement reference resources located in different subbands, and the repeat transmission indication parameter in the beam measurement reference signal resource set is configured for repeat transmission, the channel state information includes indication information of the measurement reference resource selected by the first communication node in the beam measurement reference signal resource set, and the first communication node sends the channel state information to the second communication node; when different beam measurement reference signal resources in the beam measurement reference signal resource set are located in the same subband, and the repeat transmission indication parameter in the beam measurement reference signal resource set is configured for repeat transmission, the first communication node does not send the channel state information to the second communication node.

[0182] In one embodiment, the second information and the sub-band parameter are associated, including at least one of the following: obtaining the other based on one of the second information and the sub-band parameter; obtaining the value range of the other based on one of the second information and the sub-band parameter; the combination of values ​​of the second information and the sub-band parameter satisfying a predetermined condition; and the configuration information of one of the second information and the sub-band parameter including configuration information about the other.

[0183] In one embodiment, at least one of the following conditions is met: a beam measurement reference signal resource corresponds to at least one of the following on different subbands: one or more types of channel large-scale parameters, quasi-co-located reference signals, channel quality, and reference channel quality; a beam measurement reference signal resource does not satisfy a quasi-co-located relationship with respect to a type of quasi-co-located parameters across different subbands; a BWP includes one or more subbands; a subband includes at least one channel state information subband, wherein each of the at least one channel state information subband corresponds to at least one of the following: a precoding matrix indicator (PMI) and a channel quality indicator (CQI); and corresponding subband parameters are determined for each beam measurement reference signal resource in a set of beam measurement reference signal resources.

[0184] In one embodiment, the subband parameters include at least one of the following: subband size, starting position of the first subband, number of subbands, index type of physical resource blocks (PRBs) included in the subband, and position of the reference subband; wherein the index type includes an index obtained based on the common reference position of the carrier or an index of a PRB in the set of PRBs included in the BWP.

[0185] In one embodiment, the beam measurement reference signal resource includes at least one of the following: measurement reference signal resources in a measurement reference signal resource set, wherein whether the transmission filters of different measurement reference signal resources in the measurement reference signal resource set are the same is determined by the first communication node according to signaling sent by the second communication node; measurement reference signal resources in a measurement reference signal resource set, wherein the at least one measurement reference signal resource is determined by the first communication node in the measurement reference signal resource set, and the information of the at least one measurement reference signal resource is sent by the first communication node to the second communication node; and measurement reference signal resources for which the first communication node needs to feed back channel quality information to the second communication node.

[0186] In one embodiment, channel quality includes at least one of reference signal received power (RSRP), reference signal received quality (RSRQ), and signal-to-interference-plus-noise ratio (SINR).

[0187] The information determination device proposed in this embodiment and the information determination method proposed in the above embodiments belong to the same concept. Technical details not described in detail in this embodiment can be found in any of the above embodiments. Furthermore, this embodiment has the same effect as the information determination method.

[0188] This application also provides a signal transmitting device. Figure 16 is a schematic diagram of the structure of a signal transmitting device according to an embodiment. As shown in Figure 16, the signal transmitting device includes: a signal transmitting module 510, configured to transmit a beam measurement reference signal in a beam measurement reference signal resource; and an information receiving module 520, configured to receive channel state information transmitted by a first communication node, wherein the channel state information is determined by the first communication node based on the sub-band parameters of the beam measurement reference signal resource; wherein a frequency domain bandwidth includes at least one sub-band, a sub-band includes at least one physical resource block, and a frequency domain bandwidth is a serving cell or a bandwidth portion.

[0189] In one embodiment, the channel state information includes at least one of the following: channel quality information of a beam measurement reference signal resource in each subband of more than one subband; channel quality information of a beam measurement reference signal resource in one subband; at least one beam measurement reference signal resource indication information corresponding to each subband in more than one subband; at least one combined indication information, wherein each combined indication information indicates a beam measurement reference signal resource in one subband; subband parameters corresponding to a beam measurement reference signal resource; subband parameters corresponding to a set of beam measurement reference signal resources; broadband channel quality of a beam measurement reference signal resource and information reflecting the relationship between the subband channel quality of the beam measurement reference signal resource in different subbands; broadband channel quality of a beam measurement reference signal resource, wherein the broadband channel quality is a weighted average of the channel quality of the beam measurement reference signal resource in different subbands, wherein each different subband corresponds to a weighted value.

[0190] The signal transmitting device proposed in this embodiment belongs to the same concept as the signal transmitting method proposed in the above embodiments. Technical details not described in detail in this embodiment can be found in any of the above embodiments. Furthermore, this embodiment has the same effect as performing the signal transmitting method.

[0191] This application also provides a parameter configuration transmission device. Figure 17 is a schematic diagram of the structure of a parameter configuration transmission device according to an embodiment. As shown in Figure 17, the parameter configuration transmission device includes: a configuration determination module 610, configured to determine the parameter configuration of the beam measurement reference signal resource based on the sub-band parameters of the beam measurement reference signal resource; and a configuration transmission module 620, configured to transmit the parameter configuration to a first communication node; wherein, a frequency domain bandwidth includes at least one sub-band, a sub-band includes at least one PRB, and a frequency domain bandwidth is a serving cell or a BWP.

[0192] The parameter configuration sending device proposed in this embodiment and the parameter configuration sending method proposed in the above embodiments belong to the same concept. Technical details not described in detail in this embodiment can be found in any of the above embodiments. Furthermore, this embodiment has the same effect as the parameter configuration sending method.

[0193] This application also provides a communication node. Figure 18 is a schematic diagram of the hardware structure of a communication node provided in an embodiment. As shown in Figure 18, the communication node provided in this application includes a processor 710 and a memory 720. The processor 710 in the communication node can be one or more, and Figure 18 shows one processor 710 as an example. The memory 720 is configured to store one or more programs. The one or more programs are executed by the one or more processors 710, so that the one or more processors 710 implement the information determination method, signal transmission method, or parameter configuration transmission method as described in the embodiments of this application.

[0194] The communication node also includes: a communication device 730, an input device 740, and an output device 750.

[0195] The processor 710, memory 720, communication device 730, input device 740 and output device 750 in the communication node can be connected by a bus or other means. Figure 18 shows an example of connection by bus.

[0196] Input device 740 can be used to receive input digital or character information, and to generate key signal inputs related to user settings and function control of the communication node. Output device 750 may include display devices such as a display screen.

[0197] The communication device 730 may include a receiver and a transmitter. The communication device 730 is configured to perform information transmission and reception communication under the control of the processor 710.

[0198] The memory 720, as a computer-readable storage medium, can be configured to store software programs, computer-executable programs, and modules, such as program instructions / modules corresponding to the information determination method described in the embodiments of this application (e.g., parameter determination module 410 and information determination module 420 in the information determination device). The memory 720 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application program required for at least one function; the data storage area may store data created based on the use of the communication node, etc. Furthermore, the memory 720 may include high-speed random access memory and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other non-volatile solid-state storage device. In some instances, the memory 720 may further include memory remotely located relative to the processor 710, and these remote memories can be connected to the communication node via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0199] This application also provides a storage medium storing a computer program, which, when executed by a processor, implements any of the information determination method, signal transmission method, or parameter configuration transmission method described in this application.

[0200] This application also provides a computer program product, including a computer program / instruction, which, when executed by a processor, implements any of the information determination method, signal transmission method, or parameter configuration transmission method described in this application.

[0201] The computer storage medium in this application embodiment can be any combination of one or more computer-readable media. The computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. For example, a computer-readable storage medium can be, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of computer-readable storage media (a non-exhaustive list) include: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), flash memory, optical fiber, portable CD-ROM, optical storage device, magnetic storage device, or any suitable combination thereof. The computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0202] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, which can send, propagate, or transmit programs for use by or in connection with an instruction execution system, apparatus, or device.

[0203] Program code contained on a computer-readable medium may be transmitted using any suitable medium, including but not limited to: wireless, wire, optical fiber, radio frequency (RF), etc., or any suitable combination thereof.

[0204] Computer program code for performing the operations of this application can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, as well as conventional procedural programming languages ​​such as "C" or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0205] This application also provides a computer program product, including a computer program / instructions, which, when executed by a processor, implement the video encoding method as described in any of the above embodiments.

[0206] The above description is merely an exemplary embodiment of this application and is not intended to limit the scope of protection of this application.

[0207] Those skilled in the art will understand that the term user terminal encompasses any suitable type of wireless user equipment, such as mobile phones, portable data processing portable web browsers, or vehicle-mounted mobile stations.

[0208] Generally, the various embodiments of this application can be implemented in hardware or dedicated circuitry, software, logic, or any combination thereof. For example, some aspects can be implemented in hardware, while others can be implemented in firmware or software that can be executed by a controller, microprocessor, or other computing device, although this application is not limited thereto.

[0209] Embodiments of this application can be implemented by executing computer program instructions through the data processor of a mobile device, for example, in a processor entity, or through hardware, or through a combination of software and hardware. The computer program instructions can be assembly instructions, Instruction Set Architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, status setting data, or source code or object code written in any combination of one or more programming languages.

[0210] Any block diagram of logical flow in the accompanying drawings of this application may represent program operations, or may represent interconnected logic circuits, modules, and functions, or may represent a combination of program operations and logic circuits, modules, and functions. The computer program may be stored on memory. The memory may be of any type suitable to the local technical environment and may be implemented using any suitable data storage technology, such as, but not limited to, read-only memory (ROM), random access memory (RAM), optical storage devices and systems (Digital Video Disc (DVD) or Compact Disk (CD), etc.). Computer-readable media may include non-transitory storage media. The data processor may be of any type suitable to the local technical environment, such as, but not limited to, general-purpose computers, special-purpose computers, microprocessors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), and processors based on multi-core processor architectures.

Claims

1. An information determination method, applied to a first communication node, comprising: Determine the sub-band parameters of the beam measurement reference signal resource; The first information corresponding to the beam measurement reference signal resource is determined based on the sub-band parameters, wherein the first information includes at least one of the following: channel state information corresponding to the beam measurement reference signal resource and parameter configuration corresponding to the beam measurement reference signal resource; A frequency domain bandwidth includes at least one subband, a subband includes at least one physical resource block (PRB), and a frequency domain bandwidth is a serving cell or a bandwidth portion (BWP).

2. The method according to claim 1, wherein, The channel state information includes at least one of the following: Channel quality information of the beam measurement reference signal resource in each subband of more than one subband; Channel quality information of one of the beam measurement reference signal resources in a subband; At least one beam measurement reference signal resource indication information corresponding to each sub-band in more than one sub-band; At least one combined indication information, wherein each combined indication information indicates one of the beam measurement reference signal resources on a sub-band; A sub-band parameter corresponding to the aforementioned beam measurement reference signal resource; Subband parameters corresponding to one of the beam measurement reference signal resource sets; The broadband channel quality of the beam measurement reference signal resource and information reflecting the relationship between the subband channel quality of the beam measurement reference signal resource in different subbands; A broadband channel quality of the beam measurement reference signal resource, wherein the broadband channel quality is a weighted average of the channel quality of the measurement reference signal resource in different subbands, wherein each subband in the different subbands corresponds to a weighted value.

3. The method according to claim 1, wherein, The channel state information includes at least one of the following: The first communication node selects a measurement reference signal resource group from multiple measurement reference signal resource groups, and the channel quality corresponding to each of the multiple measurement reference signal resource groups; A beam measurement reference signal resource set includes multiple beam measurement reference signal resource groups. The beam measurement reference signal resources included in each beam measurement reference signal resource group occupy different time domain positions and occupy the same subband. The beam measurement reference signal resources in different beam measurement reference signal resource groups occupy different time domain positions and occupy different subbands.

4. The method according to claim 1, wherein, One of the beam measurement reference signal resources occupies only one subband of frequency domain resources at any given time.

5. The method according to claim 2, wherein, When the channel state information includes at least one of the combined indication information, the method further includes: Determine the set of candidate combinations; Determine at least one candidate combination from the set of candidate combinations; The channel quality information corresponding to each of the at least one candidate combination determined is reported to the second communication node; The channel quality information corresponding to each candidate combination is the channel quality information of the beam measurement reference signal resource in the corresponding candidate combination on the sub-band of the corresponding candidate combination; a beam measurement reference signal resource occupies at least one sub-band, and a beam measurement reference signal resource on a sub-band is called a candidate combination.

6. The method according to claim 2, wherein, When the channel state information includes multiple combination indication information, the channel state information includes at least one set of candidate combinations; Beam measurement reference signal resources in candidate combinations within the same group can be simultaneously received by the first communication node; and / or, Beam measurement reference signal resources in different candidate combinations can be simultaneously received by the first communication node.

7. The method according to claim 2, wherein, The broadband channel quality is calculated according to the following formula: Where B represents the number of subbands occupied by the beam measurement reference signal resource, i is the subband index, and a i Q represents the weighted value corresponding to subband i. i This indicates the channel quality of the beam measurement reference signal resource on the occupied subband i.

8. The method according to claim 2, wherein the information reflecting the relationship between subband channel quality in different subbands of the beam measurement reference signal resource includes at least one of the following: The subband index corresponding to the highest subband channel quality; The variance of the quality of multiple sub-band channels.

9. The method according to claim 1, wherein, The first information also includes capability information; the method further includes: The capability information is reported to the second communication node, wherein the capability information is specific to a single subband.

10. The method according to claim 9, wherein the capability information includes information on the maximum number of beam measurement reference signal resources included in a beam measurement reference signal resource set; wherein, The repeat transmission indication parameter of the beam measurement reference signal resource set is configured for repeat transmission.

11. The method according to claim 1, wherein, The parameter configuration of the beam measurement reference signal resource includes the configuration of at least one of the following parameters: the time-domain repetition number of the beam measurement reference signal resource, the parameters of the beam measurement reference signal resource set, the repetition transmission indication parameter corresponding to the beam measurement reference signal resource set, the indication information of whether the first communication node reports the channel state information obtained based on the beam measurement reference signal resource set to the second communication node, and the capability information corresponding to the beam measurement reference signal resource. The beam measurement reference signal resource set includes the beam measurement reference signal resources.

12. The method according to claim 1, further comprising: Determine the second piece of information, which is related to the sub-band parameters; The second information includes at least one of the following: the channel state information, the capability information of the first communication node, the first parameter configuration information of the beam measurement reference signal resource, and the second parameter configuration information of the beam measurement reference signal resource set.

13. The method according to claim 1, wherein determining the sub-band parameters of the beam measurement reference signal resource comprises: Determine the sub-band parameter set corresponding to the beam measurement reference signal resource set; The beam measurement signal resource set includes at least one beam measurement reference signal resource; The sub-band parameter set corresponding to the beam measurement reference signal resource set includes the sub-band parameters corresponding to each beam measurement reference signal resource in the beam measurement reference signal resource set; The sub-band parameter set corresponding to the beam measurement reference signal resource set and the second parameter configuration information corresponding to the beam measurement signal resource set satisfy a predetermined rule.

14. The method according to claim 13, wherein the second parameter configuration information includes a repeat transmission indication parameter; The repeated transmission indication parameter indicates repeated transmission, meaning that the spatial transmission filters corresponding to different beam measurement reference signal resources in the beam measurement reference signal resource set are the same; The repeated transmission indication parameter indicates non-repeated transmission, meaning that different beam measurement reference signal resources in the beam measurement reference signal resource set correspond to different spatial transmission filters.

15. The method according to claim 14, wherein, The predetermined rule between the repeat transmission indication parameter and the subband parameter set includes at least one of the following: When the repeated transmission indication parameter is configured for repeated transmission, different measurement reference signal resources in the beam measurement reference signal resource set are located in the same subband; When the beam measurement reference signal resource set includes at least two beam measurement reference signal resources located in different subbands, the repeat transmission indication parameter cannot be configured for repeat transmission; When the beam measurement reference signal resource set includes at least two beam measurement reference signal resources located in different subbands, the retransmission indication parameter can only be configured to non-retransmission; When the repeat transmission indication parameter is configured for repeat transmission, all beam measurement reference signal resources in the beam measurement reference signal resource set correspond to the same sub-band parameters.

16. The method according to claim 13, wherein, The second parameter configuration information includes indication information on whether the first communication node reports channel state information obtained based on the beam measurement reference signal resource set to the second communication node.

17. The method according to claim 16, wherein, The predetermined rule between the indication information and the sub-band parameters includes at least one of the following: When the beam measurement reference signal resource set includes at least two beam measurement reference signal resources located in different subbands, the indication information cannot be configured not to be reported; When the beam measurement reference signal resource set includes at least two beam measurement reference signal resources located in different subbands, the indication information is configured to be reported.

18. The method according to claim 1, wherein, The determination of sub-band parameters for the beam measurement reference signal resource includes: The sub-band parameters corresponding to the beam measurement reference signal resource set are determined according to signaling, information, or agreed rules; The PRB set occupied by each beam measurement reference signal resource in the beam measurement reference signal resource set is determined based on the sub-band parameters. The beam measurement signal resource set includes at least one beam measurement reference signal resource; the subband parameters include PRB index indication information or subband index information.

19. The method according to claim 18, wherein, At least one of the following must be satisfied: The first parameter configuration information of each measurement reference signal resource in the beam measurement reference signal resource set includes the location pattern of the resource element (RE) occupied by the corresponding beam measurement reference signal resource in a PRB, but does not include the configuration information of the PRB set occupied by the corresponding measurement reference signal resource. The RE position pattern occupied by each beam measurement reference signal resource in the beam measurement reference signal resource set is the same in each of the multiple PRBs it occupies. In the beam measurement reference signal resource set, each beam measurement reference signal resource occupies one PRB for every X PRBs in the PRB set indicated by the sub-band parameters, where X is an integer greater than or equal to 1. When X is greater than 1, the first parameter configuration information of each beam measurement reference signal resource in the beam measurement reference signal resource resource set includes the starting position of the PRB occupied by the corresponding beam measurement reference signal resource.

20. The method according to claim 1, wherein, The determination of sub-band parameters for the beam measurement reference signal resource includes: The sub-band parameters corresponding to the beam measurement reference signal resource and the sub-band parameters corresponding to the beam measurement reference signal resource set are determined according to the signaling information or agreed rules respectively. When the beam measurement reference signal resource set includes the beam measurement reference signal resource, the subband determined according to the subband parameters corresponding to the beam measurement reference signal resource set belongs to the subband set determined according to the subband parameters corresponding to the beam measurement reference signal resource. In this case, a beam measurement reference signal resource occupies at least one sub-band.

21. The method according to claim 1, wherein, Determining the channel state information based on the subband parameters includes at least one of the following: In a beam measurement reference signal resource set, there are at least two measurement reference signal resources located in different subbands, and the repeated transmission indication parameter in the beam measurement reference signal resource set is configured for repeated transmission. In this case, the channel state information includes indication information of the measurement reference signal resource selected by the first communication node in the beam measurement reference signal resource set, and the first communication node sends the channel state information to the second communication node. If different beam measurement reference signal resources in the beam measurement reference signal resource set are located in the same sub-band, and the repeat transmission indication parameter in the beam measurement reference signal resource set is configured to repeat transmission, the first communication node does not send the channel state information to the second communication node.

22. The method according to claim 12, wherein, The second information and the sub-band parameters are related, including at least one of the following: The other is obtained based on the second information and one of the sub-band parameters; The value range of the other is obtained based on the second information and one of the sub-band parameters; The combination of the second information and the sub-band parameter values ​​satisfies a predetermined condition; The configuration information of one of the second information and the sub-band parameters includes configuration information about the other.

23. The method according to any one of claims 1-22, wherein, At least one of the following must be satisfied: A beam measurement reference signal resource corresponds to at least one of the following on different subbands: at least one type of channel large-scale parameter, quasi-co-located reference signal, channel quality, and reference channel quality; A beam measurement reference signal resource does not satisfy a quasi-co-address relationship across different subbands with respect to a class of quasi-co-address parameters; A BWP includes at least one sub-band; A subband includes at least one channel state information subband, wherein each channel state information subband in the at least one channel state information subband corresponds to at least one of the following: precoding matrix indicator (PMI), channel quality indicator (CQI); For each beam measurement reference signal resource in a set of beam measurement reference signal resources, determine the corresponding sub-band parameters.

24. The method according to any one of claims 1-22, wherein, The subband parameters include at least one of the following: Subband size, starting position of the first subband, number of subbands, index type of PRBs included in the subband, and position of the reference subband; The index type includes an index obtained based on the common reference position of the carrier or an index of a PRB in the PRB set included in the BWP.

25. The method according to any one of claims 1-22, wherein, The beam measurement reference signal resource includes at least one of the following: In a set of measurement reference signal resources, whether the transmission filters of different measurement reference signal resources in the set of measurement reference signal resources are the same is determined by the first communication node according to the signaling sent by the second communication node; Measurement reference signal resources in a set of measurement reference signal resources, at least one measurement reference signal resource is determined by the first communication node in the set of measurement reference signal resources, and information of the at least one measurement reference signal resource is sent by the first communication node to the second communication node; The first communication node needs to feed back the measurement reference signal resources of the channel quality information to the second communication node.

26. The method according to any one of claims 2, 3, 5, 7 and 8, wherein, Channel quality includes at least one of the following: Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), and Signal-to-Interference-plus-Noise Ratio (SINR).

27. A signal transmission method, applied to a second communication node, comprising: Transmit the beam measurement reference signal from the beam measurement reference signal resource; The system receives channel state information sent by a first communication node, the channel state information being determined by the first communication node based on the sub-band parameters of the beam measurement reference signal resource; A frequency domain bandwidth includes at least one subband, a subband includes at least one physical resource block (PRB), and a frequency domain bandwidth is a serving cell or a bandwidth portion (BWP).

28. The method according to claim 27, wherein, The channel state information includes at least one of the following: Channel quality information of the beam measurement reference signal resource in each subband of more than one subband; Channel quality information of one of the beam measurement reference signal resources in a subband; At least one beam measurement reference signal resource indication information corresponding to each sub-band in more than one sub-band; At least one combined indication information, wherein each combined indication information indicates one of the beam measurement reference signal resources on a sub-band; A sub-band parameter corresponding to the aforementioned beam measurement reference signal resource; Subband parameters corresponding to one of the beam measurement reference signal resource sets; The broadband channel quality of the beam measurement reference signal resource and information reflecting the relationship between the subband channel quality of the beam measurement reference signal resource in different subbands; A broadband channel quality of a beam measurement reference signal resource, wherein the broadband channel quality is a weighted average of the channel quality of the measurement reference signal resource in different subbands, wherein each subband corresponds to a weighted value.

29. A parameter configuration transmission method, applied to a second communication node, comprising: The parameter configuration of the beam measurement reference signal resource is determined based on the sub-band parameters of the beam measurement reference signal resource; Send the parameter configuration to the first communication node; A frequency domain bandwidth includes at least one subband, a subband includes at least one physical resource block (PRB), and a frequency domain bandwidth is a serving cell or a bandwidth portion (BWP).

30. The method according to claim 29, wherein, The parameter configuration of the beam measurement reference signal resource includes the configuration of at least one of the following parameters: the time-domain repetition number of the beam measurement reference signal resource, the parameters of the beam measurement reference signal resource set, the repetition transmission indication parameter corresponding to the beam measurement reference signal resource set, the indication information of whether the first communication node reports the channel state information obtained based on the beam measurement reference signal resource set to the second communication node, and the capability information corresponding to the beam measurement reference signal resource, wherein the beam measurement reference signal resource set includes the beam measurement reference signal resource.

31. A communication node, comprising: Memory, and at least one processor; The memory is configured to store at least one program; When the at least one program is executed by the at least one processor, the at least one processor implements the information determination method as described in any one of claims 1-26, the signal transmission method as described in any one of claims 27-28, or the parameter configuration transmission method as described in any one of claims 29-30.

32. A computer-readable storage medium storing a computer program that, when executed by a processor, implements the information determination method as described in any one of claims 1-26, the signal transmission method as described in any one of claims 27-28, or the parameter configuration transmission method as described in any one of claims 29-30.

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