CN109787727B - Method and device in user equipment and base station for wireless communication - Google Patents
Method and device in user equipment and base station for wireless communication Download PDFInfo
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Abstract
The application discloses a method and a device in user equipment and a base station for wireless communication. The user equipment sends the first channel report set and the second channel report set in sequence. The radio resources occupied by the second set of channel reports are dynamically allocated. The first and second sets of channel reports both include sub-band channel quality information. When the second channel report, that is, the set cannot report the precoding matrix information of a part of sub-bands due to the limitation of radio resources, the precoding matrix information in the first channel report set may be used to calculate the sub-band channel quality in the second channel report set under certain conditions. The method and the device help to improve the channel feedback accuracy of the channel report.
Description
Technical Field
The present application relates to a transmission scheme of wireless signals in a wireless communication system, and more particularly, to a method and apparatus for multi-antenna transmission.
Background
In a wireless communication system supporting multi-antenna transmission, it is a common technique for a UE (User Equipment) to feed back CSI (Channel State Information) to assist a base station to perform multi-antenna processing. In a conventional LTE (Long Term Evolution) system, when a UE needs to transmit CSI and uplink data simultaneously on one sub-frame, the CSI may be transmitted on an uplink physical layer shared channel together with the data.
In the 5G system, as the number of antennas equipped on the base station side increases, the accuracy of the conventional CSI feedback is difficult to meet the requirement of multi-antenna transmission, and the CSI with higher accuracy requires more feedback overhead. In the 5G NR (New Radio, New air interface) discussion, when CSI and data are transmitted together on an upper physical layer shared channel, according to a resource currently allocated to the CSI, a PMI (Precoding Matrix Indicator) corresponding to a partial sub-band (subframe) is not fed back.
Disclosure of Invention
The inventor finds out through research that: if the CSI report includes only CQIs (Channel Quality indicators) corresponding to all subbands and PMIs corresponding to wideband or partial subbands, whether the CQIs in the CSI report are calculated by using PMIs that are not sent is an urgent problem to be solved. Under certain conditions, if the PMI in the previous CSI report is used for calculating the CQI in the CSI report of the current unreported PMI, the reporting accuracy may be better improved.
The present application provides a solution to the above problems. It should be noted that the embodiments and features of the embodiments of the present application may be arbitrarily combined with each other without conflict. For example, embodiments and features in embodiments in the user equipment of the present application may be applied in the base station and vice versa.
The application discloses a method in user equipment for wireless communication, comprising
-transmitting a first radio signal carrying a first set of channel reports for determining a first channel quality for at least a first set of vectors and a corresponding first set of frequency domain resources, the first set of vectors being used for calculating the first channel quality;
-receiving a first control signal for determining N radio resource elements for transmitting a second set of channel reports, said N being a positive integer;
-transmitting a second radio signal carrying the second set of channel reports for determining a second channel quality corresponding to at least the first set of frequency domain resources;
wherein the time domain resource occupied by the second radio signal is subsequent to the time domain resource occupied by the first radio signal, and whether the first vector group is used for calculating the second channel quality is related to the value of N.
As an example, the above method has the benefits of: when the size of the channel report is limited by resource allocation and can not report all PMI information, the PMI aiming at the same frequency domain resource in the previous channel report can be used for calculating the CQI in the current channel report under a certain condition, thereby improving the accuracy of channel feedback.
As an embodiment, the determining means an explicit indication.
As an embodiment, the indication to determine refers to implicit.
As an embodiment, the determining means calculating.
As one embodiment, the first wireless signal and the second wireless signal are OFDM (Orthogonal Frequency Division Multiplexing) symbols.
As an embodiment, the first wireless signal and the second wireless signal are DFT-s-OFDM (Discrete Fourier Transform spread Orthogonal Frequency Division Multiplexing) symbols.
As an embodiment, the first wireless signal and the second wireless signal are a plurality of modulated symbols (modulated symbols) mapped to a plurality of REs (Resource elements), respectively.
For one embodiment, the first set of channel reports is channel coded and constellation modulated to generate the first wireless signal.
As an embodiment, the first channel report set is a UCI (Uplink Control Information).
As an embodiment, one of the REs is a smallest radio resource unit in radio resource allocation.
As an embodiment, the radio resource refers to a time-frequency resource.
As an embodiment, one of the REs carries one modulation symbol.
As an embodiment, the first channel report set consists of K1 channel reports, the second channel report set consists of K2 channel reports, the K1 and the K2 are both positive integers.
As one embodiment, the K1 channel reports respectively indicate channel measurements based on received K1 reference signal sets, the K1 channel reports being in one-to-one correspondence with the K1 reference signal sets.
As one embodiment, the K2 channel reports respectively indicate channel measurements based on received K2 reference signal sets, the K2 channel reports being in one-to-one correspondence with the K2 reference signal sets.
As one example, the K1 is greater than 1.
As an example, K1 is equal to 1.
As one example, the K2 is greater than 1.
As an example, K2 is equal to 1.
As one example, the K1 is equal to the K2.
As one embodiment, the K1 is not equal to the K2.
As one embodiment, the Channel Report is a Channel State Information Report (Channel State Information Report).
As an embodiment, one of the K1 channel reports indicates the first vector group and the first channel quality.
For one embodiment, the first set of vectors indicates a precoding matrix.
As one embodiment, the first vector group indicates a channel direction.
As an example, the channel quality is used to measure the channel quality.
As an embodiment, a channel quality codebook is used for generating the channel quality.
As an embodiment, the first channel Quality is one of MCS (Modulation Coding Scheme), SNR (Signal-to-Noise Ratio), SINR (Signal-to-Interference-plus-Noise Ratio), RSRP (Reference Signal Received Power), and RSRQ (Reference Signal Received Quality).
For one embodiment, the set of frequency domain resources includes L1 subcarriers, the L1 is a positive integer.
As an embodiment, the first set of frequency domain resources is one subband of M1 subbands (subbands), the M1 being a positive integer greater than 1. One subband includes L2 subcarriers, the L2 being a positive integer.
As an embodiment, the first set of frequency domain resources is an odd numbered one of the subbands.
As an embodiment, the first set of frequency domain resources is an even numbered one of the subbands.
As an example, a subband number that is small to large corresponds to a subband number that is low to high in frequency.
As an example, a subband number that is small to large corresponds to a subband number that is high to low in frequency.
As one embodiment, the adjacently numbered subbands are adjacent in the frequency domain.
As an embodiment, the first channel report is one of the K1 channel reports. The first channel report includes first precoding matrix information and first channel quality information. The first precoding matrix information indicates a first precoding matrix index, and the first channel quality information indicates a first channel quality index; the first vector group is a precoding matrix corresponding to the first precoding matrix index in a first precoding codebook, and the first channel quality is a modulation coding mode corresponding to the first channel quality index in a first channel quality codebook; the first precoding codebook and the first channel quality codebook are predefined.
As an embodiment, the first channel report is one of the K1 channel reports, the first channel report including first channel matrix information and first channel quality information; the first channel matrix information indicates a first channel matrix index, and the first channel quality information indicates a first channel quality index; the first vector group is a channel matrix corresponding to the first channel matrix index in a first channel matrix codebook, and the first channel quality is a signal-to-noise ratio corresponding to the first channel quality index in a first channel quality codebook; the first channel matrix codebook and the first channel quality codebook are predefined.
As an embodiment, the user equipment estimates a channel where the first frequency domain resource set is located based on a received reference signal to obtain a first channel direction estimate, and the first vector group is a precoding matrix selected by the user equipment from the first precoding matrix codebook and most matched with the first channel direction estimate.
As an embodiment, the first vector group is one precoding matrix of P1 candidate precoding matrices, a maximum signal-to-noise ratio of the P1 candidate precoding matrices may be obtained by transmitting a wireless signal on a wireless channel coinciding with the first channel direction estimation direction using the first vector group as a precoding matrix, and P1 is a positive integer greater than 1.
As an embodiment, the user equipment estimates a channel where the first frequency domain resource set is located based on a received reference signal to obtain a first channel direction estimate, and the first vector group is a channel matrix selected from a first channel matrix codebook of the user equipment and having a smallest difference with the first channel direction estimate.
As an embodiment, the ue estimates a channel based on a received reference signal to obtain an estimated channel, and then assumes that a vector group is a precoding matrix and selects a modulation and coding scheme most suitable for the estimated channel, where CQI indicates the modulation and coding scheme.
As an embodiment, the user equipment assumes that a vector group is a precoding matrix and selects a modulation and coding scheme with the highest transmission throughput on the estimated channel, and CQI indicates the modulation and coding scheme.
As an embodiment, the ue estimates a channel based on a received reference signal to obtain an estimated channel, and then assumes that a precoding matrix is generated based on a vector group and selects a modulation and coding scheme most suitable for the estimated channel, where the CQI indicates the modulation and coding scheme.
As an embodiment, the ue estimates a channel based on a received reference signal to obtain an estimated channel, and then selects a first modulation and coding scheme most suitable for the estimated channel based on the assumption that the first vector group is a precoding matrix, where the first channel quality is the first modulation and coding scheme.
As an embodiment, the user equipment assumes that the first vector group is a precoding matrix and selects a first modulation and coding scheme with the highest transmission throughput on the estimated channel, and the first channel quality is the first modulation and coding scheme.
As an embodiment, the ue estimates a channel based on a received reference signal to obtain an estimated channel, and then assumes that a precoding matrix is generated based on the first vector group and selects a first modulation and coding scheme most suitable for the estimated channel, where the first channel quality is the first modulation and coding scheme.
As an embodiment, a physical control channel is used for transmitting the first control signal.
As an embodiment, a PDCCH (Physical Downlink Control Channel) is used to transmit the first Control signal.
As an embodiment, the first Control signal carries DCI (Downlink Control Information).
As an embodiment, the first control signal carries first control information.
As an embodiment, the first control information is subjected to channel coding and constellation modulation to generate the first control signal.
As one embodiment, the first control information is DCI related to uplink transmission.
In an embodiment, the first control signal indicates radio resources occupied by a physical uplink shared channel on a subframe where the first channel report set is located.
In an embodiment, the first control signal indicates time-frequency resources occupied by a physical uplink shared channel on a subframe where the first channel report set is located.
As an embodiment, the first control signal indicates a time-frequency resource occupied by a PUSCH (Physical Uplink Shared Channel) in which the first Channel report set is located.
As an embodiment, the first control signal indicates an RB (Resource Block) occupied by a PUSCH (Physical Uplink Shared Channel) in which the first Channel report set is located.
As an embodiment, the first control signal indicates REs occupied by PUSCH on which the first channel report set is located.
As an embodiment, the N radio resource units carry the second channel report set.
For one embodiment, the second channel report set is a UCI.
As an embodiment, the bits of the UCI where the second channel report set is located are mapped to the N radio resource units after channel coding and constellation modulation.
As one embodiment, the radio resource elements are REs.
As one embodiment, the radio resource unit is an RB.
As an embodiment, the first control signal indicates N1 REs occupied by the PUSCH on which the first channel report set is located, the N radio resource elements are N REs of the N1 REs, and N1 is a positive integer greater than N.
As an embodiment, the distribution of the N radio resource units among the N1 REs is preconfigured.
As an embodiment, the distribution of the N radio resource units among the N1 REs is predefined.
As an embodiment, the second channel report is one of the K2 channel reports, the second channel report including second channel quality information; the second channel quality information indicates a second channel quality index.
As an embodiment, the second channel quality is a modulation coding mode corresponding to the second channel quality index in a second channel quality codebook; the second channel quality codebook is predefined.
As an embodiment, the second channel quality is a signal-to-noise ratio corresponding to the second channel quality index in a second channel quality codebook; the second channel quality codebook is predefined.
As one embodiment, the first vector set and the first channel quality are used to determine channel measurements based on a first set of reference signals and the second channel quality is used to determine channel measurements based on a second set of reference signals.
As an embodiment, the first reference signal set and the second reference signal set are transmitted by the same base station.
As an embodiment, the first reference signal set and the second reference signal set are transmitted by a same TRP (Transmit Receive Point).
For one embodiment, the first set of reference signals and the second set of reference signals are QCL (Quasi Co-located).
As one embodiment, the first set of reference signals and the second set of reference signals are spatially QCL.
For one embodiment, the two wireless signals QCL means that the large-scale channel characteristics experienced by the two wireless signals are similar.
As an embodiment, the two wireless signals are spatially QCL means that the same transmit spatial parameters and receive spatial parameters are used to transmit and receive the two wireless signals.
For one embodiment, spatially QCL for two wireless signals means that at least one of { average delay, delay spread, doppler shift, doppler spread, spatial receive parameters, spatial transmit parameters } of the channels experienced by the two wireless signals is approximate or identical.
As an embodiment, the same analog transmit beam is used by the same TRP for transmitting the first and second reference signal sets, and the same analog receive beam is used by the user equipment for receiving the first and second reference signal sets.
For one embodiment, the second set of reference signals is transmitted after the first set of reference signals.
As one embodiment, the second set of reference signals is transmitted after the first wireless signal.
As one embodiment, the second set of reference signals is transmitted before the first control signal.
As an embodiment, the N is greater than a first threshold, the second channel report set indicates a second vector group, the second vector group is used for calculating the second channel quality, the first vector group is independent of the calculation for the second channel quality, and the first threshold is a positive integer.
As one embodiment, the N is equal to the first threshold, the second channel report set indicates a second vector group used to calculate the second channel quality, the first vector group is independent of the calculation for the second channel quality.
For one embodiment, the N is less than the first threshold, the second set of channel reports does not indicate the second set of vectors.
For one embodiment, the N is less than the first threshold, and the first set of vectors is used to calculate the second channel quality.
For one embodiment, the N is less than the first threshold, and the second channel report set indicates whether the first vector set is used to calculate the second channel quality.
As an embodiment, the value of the first channel quality is different from the value of the second channel quality.
For one embodiment, the first channel report is one of the K1 channel reports, the first channel report indicating the first vector group and the first channel quality; the second channel report is one of the K2 channel reports, the second channel report indicating the second channel quality; the frequency domain ranges corresponding to the first channel report and the second channel report are the same.
As an embodiment, the values of the ranks of the channels indicated in the first channel report and the second channel report are equal.
As an embodiment, the N is greater than the first threshold, and the second channel report includes wideband precoding matrix information, even-numbered subband precoding matrix information, and odd-numbered subband precoding matrix information.
As an embodiment, N is equal to the first threshold, and the second channel report includes wideband precoding matrix information, even-numbered subband precoding matrix information, and odd-numbered subband precoding matrix information.
As an embodiment, the N is less than the first threshold and greater than the second threshold, the second channel report comprises wideband precoding matrix information and even-numbered subband precoding matrix information.
As an embodiment, the N is equal to the second threshold, the second channel report includes wideband precoding matrix information and even-numbered subband precoding matrix information, but does not include odd-numbered subband precoding matrix information.
As an embodiment, N is less than the second threshold, and the second channel report includes wideband precoding matrix information but not subband precoding matrix information.
According to one aspect of the present application, a physical shared channel is used for transmitting the second wireless signal.
As an embodiment, an uplink physical shared channel is used for transmitting the second wireless signal.
As an embodiment, the second radio signal carries one UCI transmitted on PUSCH.
As an embodiment, the physical shared channel in which the second wireless signal is located is also used for transmitting data.
As an embodiment, the physical shared channel on which the second wireless signal is located is also used for transmitting higher layer signaling.
In one embodiment, the first control signal indicates time-frequency resources occupied by a physical shared channel in which the second wireless signal is located.
As one embodiment, the first control signal indicates RBs occupied by a physical shared channel in which the second radio signal is located.
As an embodiment, the first control signal indicates REs occupied by a physical shared channel in which the second wireless signal is located.
According to one aspect of the present application, if N is greater than or equal to a first threshold, the second channel report set is used to determine a second vector group used to calculate the second channel quality, the first vector group being independent of the calculation for the second channel quality; if the N is less than the first threshold, the second channel report set or a value of the N is used to determine whether the first vector set is used to calculate the second channel quality; the first threshold is a positive integer.
As an embodiment, the method has the advantage of deciding whether to use the PMI in the last channel report to calculate the CQI in the current channel report according to the channel report content, thereby improving the accuracy of channel report reporting.
As an embodiment, the first threshold is determined by default.
As an embodiment, the first threshold is preconfigured.
For one embodiment, the second set of channel reports is used to determine the first threshold.
As one example, the first threshold is related to the value of K2.
As an example, the value of K2 is used to calculate the first threshold.
As an embodiment, the value of K2 is used to determine the first threshold.
As an example, the larger the value of K2, the larger the first threshold value.
As an embodiment, the channel bandwidth corresponding to the second channel report set is composed of P2 first-class frequency-domain resource sets, and the first frequency-domain resource set is one of the P2 first-class frequency-domain resource sets.
As one embodiment, the first threshold is related to the value of P2, the P2 being a positive integer.
As an example, the value of P2 is used to calculate the first threshold.
As an embodiment, the value of P2 is used to determine the first threshold.
As an example, the larger the value of P2, the larger the first threshold value.
As an embodiment, R2 is the rank of the channel indicated by the second channel report.
As an example, the first threshold value is related to the value of R2.
As an example, the value of R2 is used to calculate the first threshold.
As an embodiment, the value of R2 is used to determine the first threshold.
As an example, the larger the value of R2, the larger the first threshold value.
For one embodiment, Q2 is the number of non-zero wideband amplitude coefficients in the second channel report.
As one example, the first threshold is related to the value of Q2.
As one embodiment, the value of Q2 is used to calculate the first threshold.
As one embodiment, the value of Q2 is used to determine the first threshold.
As one example, the larger the Q2, the larger the first threshold.
As one embodiment, the second channel report indicates at least the R2 and the Q2.
As an embodiment, the N is equal to the first threshold, and the second channel report includes PMIs for all subbands.
As an embodiment, the N is less than the first threshold, and the second channel report does not include PMIs for odd numbered subbands.
As an embodiment, the N is equal to the first threshold, and the second channel report includes PMIs for even-numbered subbands.
As an embodiment, the N is less than the first threshold, and the second channel report does not include PMIs for any subbands.
As an embodiment, the N is greater than the first threshold, the second channel report set comprises second precoding matrix information, the second precoding matrix information indicates a second precoding matrix index, and the second vector group is a corresponding precoding matrix determined from a second precoding matrix codebook using the second precoding matrix index.
As an embodiment, the N is equal to the first threshold, the second channel report set comprises second precoding matrix information, the second precoding matrix information indicates a second precoding matrix index, and the second vector group is a corresponding precoding matrix determined from a second precoding matrix codebook using the second precoding matrix index.
As one embodiment, the second precoding matrix information is for the first set of frequency domain resources.
As an embodiment, the second precoding matrix information is a subband PMI.
As an embodiment, the N is greater than the first threshold, the second channel report set includes second channel matrix information indicating a second channel matrix index, and the second vector group is a corresponding channel matrix determined from a second channel matrix codebook using the second channel matrix index.
As an embodiment, N is equal to the first threshold, and the second set of vectors is used to calculate the second channel quality in the same way as the first set of vectors is used to calculate the first channel quality.
For one embodiment, the N is less than the first threshold, the second set of channel reports does not indicate the second set of vectors.
For one embodiment, the N is less than the first threshold, and the second channel report set is used to determine whether the first set of vectors is used to calculate the second channel quality.
As one embodiment, the second channel report set indicates whether the first vector set is used to calculate the second channel quality.
As one embodiment, the second set of channel reports explicitly indicates whether the first set of vectors is used to calculate the second channel quality.
As one embodiment, the second set of channel reports implicitly indicates whether the first set of vectors is used to calculate the second channel quality.
For one embodiment, N is equal to a second threshold, the second channel report set is used to determine whether the first vector group is used to calculate the second channel quality, and the second threshold is a positive integer smaller than the first threshold.
For one embodiment, the N is greater than the second threshold, the second channel report set is used to determine whether the first vector group is used to calculate the second channel quality, and the second threshold is a positive integer less than the first threshold.
For one embodiment, the N is less than the second threshold, and the first vector group is used to calculate the second channel quality.
As one embodiment, the N is less than the first threshold and greater than the second threshold, the second channel report set indicating whether the first vector set was used to calculate the second channel quality.
As one embodiment, the N is less than the first threshold and equal to the second threshold, the second channel report set indicating whether the first vector set was used to calculate the second channel quality.
As one embodiment, the value of N is used to determine whether the second channel report set indicates the second set of vectors.
According to one aspect of the application, is characterized in that it comprises
-receiving first signaling for determining the first threshold.
As an embodiment, the first signaling is dynamic signaling.
As an embodiment, PDCCH is used for transmitting the first signaling.
As an embodiment, the first signaling is semi-static signaling.
As an embodiment, the first signaling is RRC (Radio Resource Control) signaling.
As one embodiment, PDSCH is used for transmitting the first signaling.
As an embodiment, the first signaling explicitly indicates the first threshold.
As one embodiment, the first signaling implicitly indicates the first threshold.
As an embodiment, the first signaling indicates the number of subcarriers (Component carriers, CCs).
As an embodiment, the first signaling indicates the number of TRPs.
As an embodiment, the first signaling indicates a value of the K2.
As an embodiment, the value of the first signaling indication is used for calculating the first threshold.
According to one aspect of the present application, the first channel report set is used to determine a third vector set corresponding to a second set of frequency domain resources; the second set of frequency domain resources is non-coincident in frequency domain with the first set of frequency domain resources; if the N is less than the first threshold and the second set of channel reports is used to determine a fourth set of vectors corresponding to the second set of frequency domain resources, a difference between the third set of vectors and the fourth set of vectors is used to determine whether the first set of vectors is used to calculate the second channel quality.
As an embodiment, the above method has a benefit that when the current channel report does not include the PMI of the local subband, whether to use the PMI of the local subband in the previous channel report to calculate the CQI of the local subband is determined according to the change of the PMI of the reported adjacent subband in the time domain, so as to improve the accuracy of the channel report.
As an embodiment, the second set of frequency-domain resources and the first set of frequency-domain resources are two subbands that are adjacent in the frequency domain.
As an embodiment, the second set of channel reports comprises fourth precoding matrix information indicating the fourth vector group.
As an embodiment, the N is greater than or equal to the first threshold, the second channel report set indicates the fourth vector group, but the fourth vector group is not used to calculate the second channel quality, the second vector group is used to calculate the second channel quality.
As an embodiment, the N is less than the first threshold, a difference between the third vector group and the fourth vector group is greater than a target threshold, the first vector group is not used to calculate the second channel quality, the second vector group is used to calculate the second channel quality, the first channel report set does not indicate the second vector group, and the target threshold is a non-negative number.
For one embodiment, N is less than the first threshold, a difference between the third set of vectors and the fourth set of vectors is greater than a target threshold, the first set of vectors is not used to calculate the second channel quality, the fourth set of vectors is used to calculate the second channel quality, and the target threshold is a non-negative number.
As one embodiment, the N is less than the first threshold, a difference between the third set of vectors and the fourth set of vectors is equal to a target threshold, the first set of vectors is used to calculate the second channel quality.
As one embodiment, the N is less than the first threshold, a difference between the third set of vectors and the fourth set of vectors is less than a target threshold, the first set of vectors is used to calculate the second channel quality.
As an embodiment, the N is smaller than the first threshold, and the difference between the third vector group and the fourth vector group can only be a non-negative number.
As an example, the target threshold is a positive number.
As one embodiment, the target threshold is 0.
As an embodiment, the difference between the two sets of vectors is related to the euclidean distance between the two vectors comprised by the two sets of vectors, respectively.
As an embodiment, the difference between the two vector groups is related to the sum of the euclidean distances between the same numbered vectors of the two vector groups.
As an embodiment, the difference between the two vector groups is the sum of the euclidean distances between the identically numbered vectors of the two vector groups.
As an embodiment, the difference between the two sets of vectors is proportional to the sum of the euclidean distances between the identically numbered vectors of the two sets of vectors.
As an embodiment, the difference between the two vector sets is related to an angle between two vectors comprised by the two vector sets, respectively.
As an embodiment, the difference between the two sets of vectors is related to the sum of angles between identically numbered vectors of the two sets of vectors.
As an embodiment, the difference between the two vector groups is a sum of angles between identically numbered vectors of the two vector groups.
As an embodiment, the difference between the two vector groups is proportional to the sum of the angles between the same numbered vectors in the two vector groups.
For one embodiment, the first set of channel reports is used to determine a fifth set of vectors corresponding to a third set of frequency domain resources; the third set of frequency domain resources is non-overlapping in frequency domain with the first set of frequency domain resources; the N is less than the first threshold; the second channel report set is used for determining a sixth vector group corresponding to the third frequency domain resource set; the difference between the third set of vectors and the fourth set of vectors and the difference between the fifth set of vectors and the sixth set of vectors are used to determine whether the first set of vectors is used to calculate the second channel quality.
As one embodiment, the N is less than the first threshold, a first difference is a difference between the third vector set and the fourth vector set, a second difference is a difference between the fifth vector set and the sixth vector set, and a sum of the first difference and the second difference is used to determine whether the first vector set is used to calculate the second channel quality.
As an embodiment, the second set of frequency domain resources and the third set of frequency domain resources are two sets of frequency domain resources adjacent to the first set of frequency domain resources.
For one embodiment, the second set of frequency domain resources and the third set of frequency domain resources are not adjacent in the frequency domain.
As an embodiment, the N is less than the first threshold, the second set of channel reports is used to determine a fourth set of vectors corresponding to the second set of frequency domain resources, a first value is used to determine whether the first set of vectors is used to calculate the second channel quality, and a difference between the third set of vectors and the fourth set of vectors is used to calculate the first value.
For one embodiment, the first value is less than a target threshold, the first vector set is used to calculate the second channel quality, and the target threshold is a non-negative real number.
For one embodiment, the first value is equal to the target threshold, and the first vector group is used to calculate the second channel quality.
For one embodiment, the first value is greater than the target threshold, and the first set of vectors is not used to calculate the second channel quality.
As one embodiment, the target threshold is greater than 0.
As one embodiment, the target threshold is equal to 0.
According to one aspect of the present application, the first set of vectors is used to calculate the second channel quality if the N is less than a second threshold.
As an embodiment, the above method has a benefit that when the current channel report does not include any subband PMI, the subband PMI in the last channel report is used for channel quality in the current channel report, thereby improving the accuracy of channel reporting.
As an embodiment, the second threshold is determined by default.
As an embodiment, the second threshold is preconfigured.
For one embodiment, the second set of channel reports is used to determine the second threshold.
As one example, the second threshold is related to the value of K2.
As an example, the value of K2 is used to calculate the second threshold.
As an embodiment, the value of K2 is used to determine the second threshold.
As an example, the larger the value of K2, the larger the second threshold value.
As one embodiment, the second threshold is related to the value of P2, the P2 being a positive integer.
As an example, the value of P2 is used to calculate the second threshold.
As an embodiment, the value of P2 is used to determine the second threshold.
As an example, the larger the value of P2, the larger the second threshold value.
As an example, the value of R2 is used to calculate the second threshold.
As an embodiment, the value of R2 is used to determine the second threshold.
As an example, the larger the value of R2, the larger the second threshold value.
As one example, the second threshold is related to the value of Q2.
As one embodiment, the value of Q2 is used to calculate the second threshold.
As one embodiment, the value of Q2 is used to determine the second threshold.
As one example, the larger the Q2, the larger the second threshold.
As an embodiment, the N is equal to the second threshold, and the second channel report includes PMIs for even-numbered subbands.
As an embodiment, the N is less than the second threshold, and the second channel report does not include PMIs for any subbands.
According to an aspect of the application, if N is less than the second threshold, the second set of channel reports is not used for determining the fourth vector group.
As an embodiment, the second channel report does not include any subband PMIs.
As an embodiment, the second channel report does not include any channel vector information.
According to one aspect of the application, the method is characterized by comprising the following steps:
-receiving a first set of reference signals, the first set of channel reports being used for determining channel measurements based on the first set of reference signals.
As an embodiment, the first reference signal group consists of the K1 reference signal sets.
As an embodiment, the first Reference Signal group is a CSI-RS (Channel State Information Reference Signal).
As an example, the first set of reference signals is SS (Synchronization Signal).
As one embodiment, the first reference signal group includes a plurality of TRP transmitted reference signals.
For one embodiment, the first reference signal group includes reference signals on a plurality of subcarriers.
As one embodiment, the first set of channel reports indicates channel measurements based on the first set of reference signals.
As one embodiment, the first set of channel reports is used to determine a multi-antenna precoding and modulation demodulation scheme for subsequent transmissions.
As one embodiment, the first set of channel reports is used to determine a radio resource allocation scheme for subsequent transmissions.
According to one aspect of the application, the method is characterized by comprising the following steps:
-receiving a second set of reference signals, the second set of channel reports being used for determining channel measurements based on the second set of reference signals.
As an embodiment, the second reference signal group consists of the K2 reference signal sets.
As one embodiment, the second set of reference signals is transmitted after the first set of reference signals.
As one embodiment, the second set of reference signals is transmitted after the first wireless signal.
As one embodiment, the second set of reference signals is transmitted after the first set of reference signals.
As an embodiment, the second Reference Signal group is a CSI-RS (Channel State Information Reference Signal).
As an example, the second set of reference signals is SS (Synchronization Signal).
As one embodiment, the second reference signal group includes a plurality of TRP transmitted reference signals.
For one embodiment, the second set of reference signals includes reference signals on a plurality of subcarriers.
As one embodiment, the second set of channel reports indicates channel measurements based on the first set of reference signals.
As one embodiment, the second set of channel reports is used to determine a multi-antenna precoding and modulation demodulation scheme for subsequent transmissions.
The application discloses a method in a base station device for wireless communication, comprising
-receiving a first radio signal carrying a first set of channel reports for determining a first channel quality for at least a first set of vectors and a corresponding first set of frequency domain resources, the first set of vectors being used for calculating the first channel quality;
-transmitting a first control signal for determining N radio resource elements for transmission of a second set of channel reports, N being a positive integer;
-receiving a second radio signal carrying the second set of channel reports for determining a second channel quality corresponding to at least the first set of frequency domain resources;
wherein the time domain resource occupied by the second radio signal is subsequent to the time domain resource occupied by the first radio signal, and whether the first vector group is used for calculating the second channel quality is related to the value of N.
As an embodiment, whether the base station device assumes that the first set of vectors is used for calculating the second channel quality is related to the value of N.
As an embodiment, the second set of channel reports is used to determine a radio resource allocation, a precoding matrix and a modulation coding scheme in a subsequent transmission following the second radio signal.
According to one aspect of the present application, a physical shared channel is used for transmitting the second wireless signal.
According to one aspect of the present application, if N is greater than or equal to a first threshold, the second channel report set is used to determine a second vector group used to calculate the second channel quality, the first vector group being independent of the calculation for the second channel quality; if the N is less than the first threshold, the second channel report set or a value of the N is used to determine whether the first vector set is used to calculate the second channel quality; the first threshold is a positive integer.
According to one aspect of the application, is characterized in that it comprises
-sending first signaling for determining the first threshold.
According to one aspect of the present application, the first channel report set is used to determine a third vector set corresponding to a second set of frequency domain resources; the second set of frequency domain resources is non-coincident in frequency domain with the first set of frequency domain resources; if the N is less than the first threshold and the second set of channel reports is used to determine a fourth set of vectors corresponding to the second set of frequency domain resources, a difference between the third set of vectors and the fourth set of vectors is used to determine whether the first set of vectors is used to calculate the second channel quality.
According to one aspect of the present application, the first set of vectors is used to calculate the second channel quality if the N is less than a second threshold.
According to an aspect of the application, if N is less than the second threshold, the second set of channel reports is not used for determining the fourth vector group.
According to one aspect of the application, the method is characterized by comprising the following steps:
-transmitting a first set of reference signals, the first set of channel reports being used for determining channel measurement results based on the first set of reference signals.
According to one aspect of the application, the method is characterized by comprising the following steps:
-transmitting a second set of reference signals, the second set of channel reports being used for determining channel measurement results based on the second set of reference signals.
The application discloses a user equipment for wireless communication, comprising
-a first transmitter module for transmitting a first radio signal carrying a first set of channel reports for determining at least a first set of vectors and a first channel quality corresponding to a first set of frequency domain resources, the first set of vectors being used for calculating the first channel quality;
-a second receiver module for receiving a first control signal for determining N radio resource elements for transmission of a second set of channel reports, said N being a positive integer;
-a third transmitter module for transmitting a second radio signal carrying said second set of channel reports for determining a second channel quality corresponding to at least said first set of frequency domain resources;
wherein the time domain resource occupied by the second radio signal is subsequent to the time domain resource occupied by the first radio signal, and whether the first vector group is used for calculating the second channel quality is related to the value of N.
As an embodiment, the above user equipment is characterized in that a physical shared channel is used for transmitting the second radio signal.
As an embodiment, the above user equipment is characterized in that if N is greater than or equal to a first threshold, the second channel report set is used to determine a second vector group, the second vector group is used to calculate the second channel quality, the first vector group is not related to the calculation for the second channel quality; if the N is less than the first threshold, the second channel report set or a value of the N is used to determine whether the first vector set is used to calculate the second channel quality; the first threshold is a positive integer.
As an embodiment, the above user equipment is characterized in that the second receiver module receives a first signaling, and the first signaling is used for determining the first threshold.
As an embodiment, the ue is characterized in that the first channel report set is used to determine a third vector set corresponding to a second set of frequency domain resources; the second set of frequency domain resources is non-coincident in frequency domain with the first set of frequency domain resources; if the N is less than the first threshold and the second set of channel reports is used to determine a fourth set of vectors corresponding to the second set of frequency domain resources, a difference between the third set of vectors and the fourth set of vectors is used to determine whether the first set of vectors is used to calculate the second channel quality.
As an embodiment, the user equipment as described above is characterized in that the first vector group is used to calculate the second channel quality if N is smaller than a second threshold.
As an embodiment, the above user equipment is characterized in that if N is less than the second threshold, the second channel report set is not used for determining the fourth vector group.
As an embodiment, the above user equipment is characterized in that the second receiver module receives a first set of reference signals, the first set of channel reports being used for determining channel measurements based on the first set of reference signals.
As an embodiment, the above user equipment is characterized in that the second receiver module receives a second set of reference signals, the second set of channel reports being used for determining channel measurement results based on the second set of reference signals.
A base station apparatus for wireless communication includes
-a first receiver module receiving a first wireless signal carrying a first set of channel reports for determining a first channel quality for at least a first set of vectors and a corresponding first set of frequency domain resources, the first set of vectors being used for calculating the first channel quality;
-a second transmitter module for transmitting a first control signal for determining N radio resource units for transmission of a second set of channel reports, said N being a positive integer;
-receiving a second radio signal carrying the second set of channel reports for determining a second channel quality corresponding to at least the first set of frequency domain resources;
wherein the time domain resource occupied by the second radio signal is subsequent to the time domain resource occupied by the first radio signal, and whether the first vector group is used for calculating the second channel quality is related to the value of N.
As an embodiment, the base station apparatus described above is characterized in that a physical shared channel is used for transmitting the second wireless signal.
As an embodiment, the above base station apparatus is characterized in that, if N is greater than or equal to a first threshold, the second channel report set is used to determine a second vector group used to calculate the second channel quality, the first vector group is not related to the calculation for the second channel quality; if the N is less than the first threshold, the second channel report set or a value of the N is used to determine whether the first vector set is used to calculate the second channel quality; the first threshold is a positive integer.
As an embodiment, the base station device is characterized in that the second transmitter module transmits a first signaling, and the first signaling is used for determining the first threshold.
As an embodiment, the base station device is characterized in that the first channel report set is used to determine a third vector group corresponding to a second frequency domain resource set; the second set of frequency domain resources is non-coincident in frequency domain with the first set of frequency domain resources; if the N is less than the first threshold and the second set of channel reports is used to determine a fourth set of vectors corresponding to the second set of frequency domain resources, a difference between the third set of vectors and the fourth set of vectors is used to determine whether the first set of vectors is used to calculate the second channel quality.
As an embodiment, the base station apparatus is characterized in that the first vector group is used to calculate the second channel quality if N is less than a second threshold.
As an embodiment, the base station apparatus is characterized in that if N is less than the second threshold, the second channel report set is not used for determining the fourth vector group.
As an embodiment, the base station device as described above is characterized in that the second transmitter module transmits a first set of reference signals, the first set of channel reports being used for determining channel measurement results based on the first set of reference signals.
As an embodiment, the base station device as described above is characterized in that the second transmitter module transmits a second set of reference signals, the second set of channel reports being used for determining channel measurement results based on the second set of reference signals.
As an embodiment, compared with the prior art, the present application has the following technical advantages:
-when the channel report can not report part or all of the sub-band PMIs, using the previous information
Calculating CQI in the current channel report by sub-band PMI information in the channel report, and improving the CQI in the current channel report
Channel feedback accuracy of the channel report.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
FIG. 1 illustrates a flow diagram of a first wireless signal, a first control signal, and a second wireless signal according to one embodiment of the present application;
FIG. 2 shows a schematic diagram of a network architecture according to an embodiment of the present application;
figure 3 shows a schematic diagram of a radio protocol architecture of a user plane and a control plane according to an embodiment of the present application;
figure 4 shows a schematic diagram of an evolved node and a given user equipment according to an embodiment of the present application;
FIG. 5 shows a wireless signal transmission flow diagram according to an embodiment of the present application;
FIG. 6 shows a schematic diagram of a first channel report set, a second channel report set, a first threshold and a second threshold according to an embodiment of the present application;
fig. 7 shows a schematic diagram of a first set of frequency domain resources and a second set of frequency domain resources according to an embodiment of the present application.
FIG. 8 shows a block diagram of a processing device in a UE according to an embodiment of the present application;
fig. 9 shows a block diagram of a processing device in a base station according to an embodiment of the present application.
Detailed Description
The technical solutions of the present application will be further described in detail with reference to the accompanying drawings, and it should be noted that the embodiments and features of the embodiments of the present application can be arbitrarily combined with each other without conflict.
Example 1
Embodiment 1 illustrates a flow chart of a first reference signal group and a first wireless signal according to the present application, as shown in fig. 1. In fig. 1, each block represents a step. In embodiment 1, the ue in this application sequentially transmits a first radio signal, receives a first control signal, and transmits a second radio signal; wherein the first radio signal carries a first channel report set, the first channel report set being used to determine at least a first vector group and a first channel quality corresponding to a first set of frequency domain resources, the first vector group being used to calculate the first channel quality; the first control signal is used to determine N radio resource elements for transmitting a second set of channel reports, N being a positive integer; the second wireless signal carries the second set of channel reports for determining a second channel quality corresponding to at least the first set of frequency domain resources; whether the first vector group is used for calculating the second channel quality is related to the value of N after the time domain resource occupied by the first wireless signal.
As one embodiment, a physical shared channel is used to transmit the first wireless signal and the second wireless signal.
As an embodiment, a physical control channel is used for transmitting the first control signal.
As an embodiment, the first control signal carries one DCI related to uplink PUSCH radio resource allocation.
As one embodiment, if N is equal to a first threshold, the second channel report set is used to determine a second vector group used to calculate the second channel quality, the first vector group being independent of the calculation for the second channel quality; if the N is less than the first threshold, the second channel report set or a value of the N is used to determine whether the first vector set is used to calculate the second channel quality; the first threshold is a positive integer.
For one embodiment, the first set of channel reports is used to determine a third set of vectors corresponding to a second set of frequency domain resources; the second set of frequency domain resources is non-coincident in frequency domain with the first set of frequency domain resources; if the N is less than the first threshold and the second set of channel reports is used to determine a fourth set of vectors corresponding to the second set of frequency domain resources, a difference between the third set of vectors and the fourth set of vectors is used to determine whether the first set of vectors is used to calculate the second channel quality.
For one embodiment, the first set of vectors is used to calculate the second channel quality if the N is less than a second threshold.
Example 2
Embodiment 2 illustrates a schematic diagram of a network architecture according to the present application, as shown in fig. 2. Fig. 2 is a diagram illustrating a network architecture 200 of NR 5G, LTE (Long-Term Evolution) and LTE-a (Long-Term Evolution Advanced) systems. The NR 5G or LTE network architecture 200 may be referred to as EPS (Evolved Packet System) 200 or some other suitable terminology. The EPS 200 may include one or more UEs (User Equipment) 201, NG-RANs (next generation radio access networks) 202, EPCs (Evolved Packet cores)/5G-CNs (5G-Core networks) 210, HSS (Home Subscriber Server) 220, and internet services 230. The EPS may interconnect with other access networks, but these entities/interfaces are not shown for simplicity. As shown, the EPS provides packet-switched services, however those skilled in the art will readily appreciate that the various concepts presented throughout this application may be extended to networks providing circuit-switched services or other cellular networks. The NG-RAN includes NR node b (gNB)203 and other gnbs 204. The gNB203 provides user and control plane protocol termination towards the UE 201. The gnbs 203 may be connected to other gnbs 204 via an Xn interface (e.g., backhaul). The gNB203 may also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a Basic Service Set (BSS), an Extended Service Set (ESS), a TRP (point of transmission reception), or some other suitable terminology. The gNB203 provides an access point for the UE201 to the EPC/5G-CN 210. Examples of the UE201 include a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop, a Personal Digital Assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player), a camera, a gaming console, a drone, an aircraft, a narrowband physical network device, a machine type communication device, a land vehicle, an automobile, a wearable device, or any other similar functioning device. Those skilled in the art may also refer to UE201 as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology. The gNB203 connects to the EPC/5G-CN210 through the S1/NG interface. The EPC/5G-CN210 includes an MME/AMF/UPF211, other MMEs/AMF/UPF 214, an S-GW (Service Gateway) 212, and a P-GW (Packet data Network Gateway) 213. MME/AMF/UPF211 is a control node that handles signaling between UE201 and EPC/5G-CN 210. In general, the MME/AMF/UPF211 provides bearer and connection management. All user IP (Internet protocol) packets are transmitted through S-GW212, and S-GW212 itself is connected to P-GW 213. The P-GW213 provides UE IP address allocation as well as other functions. The P-GW213 is connected to the internet service 230. The internet service 230 includes an operator-corresponding internet protocol service, and may specifically include the internet, an intranet, an IMS (IP Multimedia Subsystem), and a PS streaming service (PSs).
As an embodiment, the UE201 corresponds to a user equipment in the present application.
As an embodiment, the gNB203 corresponds to a base station in the present application.
As an embodiment, the UE201 supports multi-antenna transmission.
As an embodiment, the gNB203 supports multiple antenna transmission.
Example 3
Embodiment 3 shows a schematic diagram of an embodiment of a radio protocol architecture for the user plane and the control plane according to the present application, as shown in fig. 3. Fig. 3 is a schematic diagram illustrating an embodiment of radio protocol architecture for the user plane and the control plane, fig. 3 showing the radio protocol architecture for the User Equipment (UE) and the base station equipment (gNB or eNB) in three layers: layer 1, layer 2 and layer 3. Layer 1(L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to herein as PHY 301. Layer 2(L2 layer) 305 is above PHY301 and is responsible for the link between the UE and the gNB through PHY 301. In the user plane, the L2 layer 305 includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the gNB on the network side. Although not shown, the UE may have several upper layers above the L2 layer 305, including a network layer (e.g., IP layer) that terminates at the P-GW on the network side and an application layer that terminates at the other end of the connection (e.g., far end UE, server, etc.). The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides header compression for upper layer data packets to reduce radio transmission overhead, security by ciphering the data packets, and handover support for UEs between gnbs. The RLC sublayer 303 provides segmentation and reassembly of upper layer packets, retransmission of lost packets, and reordering of packets to compensate for out-of-order reception due to HARQ. The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) in one cell among the UEs. The MAC sublayer 302 is also responsible for HARQ operations. In the control plane, the radio protocol architecture for the UE and the gNB is substantially the same for the physical layer 301 and the L2 layer 305, but without the header compression function for the control plane. The Control plane also includes an RRC (Radio Resource Control) sublayer 306 in layer 3 (layer L3). The RRC sublayer 306 is responsible for obtaining radio resources (i.e., radio bearers) and configures the lower layers using RRC signaling between the gNB and the UE.
As an example, the radio protocol architecture in fig. 3 is applicable to the user equipment in the present application.
As an example, the radio protocol architecture in fig. 3 is applicable to the base station apparatus in the present application.
As an example, the first wireless signal in this application is generated in the PHY 301.
As an embodiment, the first control signal in the present application is generated in the PHY 301.
As an example, the second wireless signal in this application is generated in the PHY 301.
As an example, the first reference signal group in the present application is generated in the PHY 301.
As an example, the second set of reference signals in the present application is generated at the PHY 301.
As an embodiment, the first signaling in this application is generated in the PHY 301.
Example 4
Embodiment 4 shows a schematic diagram of a base station device and a given user equipment according to the present application, as shown in fig. 4. Fig. 4 is a block diagram of a gNB410 in communication with a UE450 in an access network.
Controller/processor 440, scheduler 443, memory 430, receive processor 412, transmit processor 415, MIMO transmit processor 441, MIMO detector 442, transmitter/receiver 416 and antennas 420 may be included in base station apparatus (410).
Controller/processor 490, memory 480, data source 467, transmit processor 455, receive processor 452, MIMO transmit processor 471, MIMO detector 472, transmitter/receiver 456, and antenna 460 may be included in a user equipment (UE 450).
In the downlink transmission, the processing related to the base station apparatus (410) may include:
upper layer packets arrive at controller/processor 440, controller/processor 440 provides packet header compression, encryption, packet segmentation concatenation and reordering, and demultiplexing of the multiplex between logical and transport channels to implement the L2 layer protocol for the user plane and control plane; the upper layer packet may include data or control information, such as DL-SCH (Downlink Shared Channel);
the controller/processor 440 may be associated with a memory 430 that stores program codes and data. Memory 430 may be a computer-readable medium;
controller/processor 440 informs scheduler 443 of the transmission requirement, scheduler 443 is configured to schedule the empty resource corresponding to the transmission requirement, and informs controller/processor 440 of the scheduling result;
controller/processor 440 passes control information for downlink transmission to transmit processor 415 resulting from processing of uplink reception by receive processor 412;
a transmit processor 415 receives the output bit stream of the controller/processor 440, implements various signal transmission processing functions for the L1 layer (i.e., physical layer) including coding, interleaving, scrambling, modulation, power control/allocation, and physical layer control signaling (including PBCH, PDCCH, PHICH, PCFICH, reference signal) generation, etc.;
MIMO transmit processor 441 performs spatial processing (e.g., multi-antenna precoding, digital beamforming) on the data symbols, control symbols, or reference signal symbols and outputs a baseband signal to transmitter 416;
MIMO transmit processor 441 outputs analog transmit beamforming vectors to transmitter 416;
a transmitter 416 for converting the baseband signals provided by MIMO transmit processor 441 into radio frequency signals and transmitting them via antenna 420; each transmitter 416 samples a respective input symbol stream to obtain a respective sampled signal stream; each transmitter 416 further processes (e.g., converts to analog, amplifies, filters, upconverts, etc.) the respective sample stream to obtain a downlink signal; analog transmit beamforming is processed in transmitter 416.
In the downlink transmission, the processing related to the user equipment (UE450) may include:
a MIMO detector 472 for MIMO detection of the signals received from receiver 456, providing a MIMO detected baseband signal to receive processor 452;
the receive processor 452 extracts analog receive beamforming related parameters to output to the MIMO detector 472, and the MIMO detector 472 outputs analog receive beamforming vectors to the receiver 456;
receive processor 452 performs various signal receive processing functions for the L1 layer (i.e., physical layer) including decoding, deinterleaving, descrambling, demodulation, and physical layer control signaling extraction, etc.;
controller/processor 490 receives the bit stream output by receive processor 452 and provides packet header decompression, decryption, packet segmentation concatenation and reordering, and multiplexing and demultiplexing between logical and transport channels to implement the L2 layer protocol for the user plane and control plane;
the controller/processor 490 may be associated with a memory 480 that stores program codes and data. Memory 480 may be a computer-readable medium;
controller/processor 490 passes control information for downlink reception resulting from the processing of uplink transmissions by transmit processor 455 to receive processor 452.
The first control signal in this application is generated by the transmit processor 415. A MIMO transmit processor 441 performs multi-antenna precoding on the baseband signals associated with the first control signals output by the transmit processor 415. The transmitter 416 converts the baseband signals provided from the MIMO transmit processor 441 to rf signals, performs analog transmit beamforming, and transmits the rf signals via the antenna 420. Receiver 456 performs analog receive beamforming on the received signal via antenna 460 to obtain a radio frequency signal associated with the first control signal, which is converted to a baseband signal and provided to MIMO detector 472. MIMO detector 472 performs MIMO detection on the signal received from receiver 456. The receiving processor 452 processes the baseband signal output by the MIMO detector 472 to obtain the first control signal.
The first signaling in this application is generated by the transmit processor 415. A MIMO transmit processor 441 performs multi-antenna precoding on the first signaling-related baseband signals output by transmit processor 415. The transmitter 416 converts the baseband signals provided from the MIMO transmit processor 441 to rf signals, performs analog transmit beamforming, and transmits the rf signals via the antenna 420. Receiver 456 performs analog receive beamforming on the received signal via antenna 460 to obtain a radio frequency signal associated with the first signaling, and converts the radio frequency signal to a baseband signal for MIMO detector 472. MIMO detector 472 performs MIMO detection on the signal received from receiver 456. The receive processor 452 processes the baseband signal output by the MIMO detector 472 to obtain the first signaling.
The first set of reference signals in this application is generated by the transmit processor 415. A MIMO transmit processor 441 performs multi-antenna precoding on the baseband signals associated with the first set of reference signals output by the transmit processor 415. The transmitter 416 converts the baseband signals provided from the MIMO transmit processor 441 to rf signals, performs analog transmit beamforming, and transmits the rf signals via the antenna 420. Receiver 456 will receive through antenna 460, perform analog receive beamforming, obtain rf signals associated with the first set of reference signals, and convert to baseband signals for MIMO detector 472. MIMO detector 472 performs MIMO detection on the signal received from receiver 456. A receive processor 452 performs channel measurement on the baseband signal output by the MIMO detector 472.
The second set of reference signals in this application is generated by the transmit processor 415. A MIMO transmit processor 441 performs multi-antenna precoding on the baseband signals associated with the second set of reference signals output by the transmit processor 415. The transmitter 416 converts the baseband signals provided from the MIMO transmit processor 441 to rf signals, performs analog transmit beamforming, and transmits the rf signals via the antenna 420. Receiver 456 will receive through antenna 460, perform analog receive beamforming, obtain rf signals associated with the second set of reference signals, and convert to baseband signals for MIMO detector 472. MIMO detector 472 performs MIMO detection on the signal received from receiver 456. A receive processor 452 performs channel measurement on the baseband signal output by the MIMO detector 472.
In uplink transmission, the processing related to the user equipment (UE450) may include:
a data source 467 provides upper layer packets to the controller/processor 490, the controller/processor 490 providing packet header compression, encryption, packet segmentation concatenation and reordering, and multiplexing and demultiplexing between logical and transport channels to implement the L2 layer protocol for the user plane and the control plane; the upper layer packet may include data or control information, such as UL-SCH (Uplink Shared Channel);
the controller/processor 490 may be associated with a memory 480 that stores program codes and data. Memory 480 may be a computer-readable medium;
controller/processor 490 passes control information for uplink transmission, resulting from processing of downlink reception by receive processor 452, to transmit processor 455;
a transmit processor 455 receives the output bit stream of the controller/processor 490, and performs various Signal transmission processing functions for the L1 layer (i.e., physical layer) including coding, interleaving, scrambling, modulation, power control/allocation, and physical layer control signaling (including PUCCH, SRS (Sounding Reference Signal)) generation, etc.;
a MIMO transmit processor 471 performs spatial processing (e.g., multi-antenna precoding, digital beamforming) on the data symbols, control symbols, or reference signal symbols, and outputs a baseband signal to the transmitter 456;
the MIMO transmit processor 471 outputs the analog transmit beamforming vectors to the transmitter 457;
a transmitter 456 for converting baseband signals provided by MIMO transmit processor 471 into radio frequency signals and transmitting them via antenna 460; each transmitter 456 samples a respective input symbol stream to produce a respective sampled signal stream. Each transmitter 456 further processes (e.g., converts to analog, amplifies, filters, upconverts, etc.) the respective sample stream to obtain an uplink signal. Analog transmit beamforming is processed in transmitter 456.
In uplink transmission, the processing related to the base station apparatus (410) may include:
a MIMO detector 442 for MIMO detecting signals received from receiver 416, and providing MIMO detected symbols to receive processor 442;
receive processor 412 performs various signal receive processing functions for the L1 layer (i.e., the physical layer) including decoding, deinterleaving, descrambling, demodulation, and physical layer control signaling extraction, among others;
controller/processor 440 receives the bitstream output by receive processor 412, provides packet header decompression, decryption, packet segmentation concatenation and reordering, and multiplexing and demultiplexing between logical and transport channels to implement L2 layer protocols for the user plane and control plane;
the controller/processor 440 may be associated with a memory 430 that stores program codes and data. Memory 430 may be a computer-readable medium;
controller/processor 440 passes control information for uplink transmission to receive processor 412 resulting from processing of downlink transmission by transmit processor 415;
the first wireless signal in this application is generated by the transmit processor 455. A MIMO transmit processor 471 performs multi-antenna precoding on baseband signals associated with the first wireless signals output by the transmit processor 455. The transmitter 456 converts the baseband signal provided from the MIMO transmit processor 471 into a radio frequency signal, performs analog transmit beamforming, and transmits the radio frequency signal via the antenna 460. The receiver 416 performs analog receive beamforming on the received signal through the antenna 420 to obtain a radio frequency signal related to the first wireless signal, and converts the radio frequency signal into a baseband signal to be provided to the MIMO detector 442. MIMO detector 442 performs MIMO detection on the signals received from receiver 416. The receive processor 412 processes the baseband signal output by the MIMO detector 442 to obtain the first wireless signal.
The second wireless signal in this application is generated by the transmit processor 455. A MIMO transmit processor 471 performs multi-antenna precoding on the baseband signals associated with the second wireless signals output by the transmit processor 455. The transmitter 456 converts the baseband signal provided from the MIMO transmit processor 471 into a radio frequency signal, performs analog transmit beamforming, and transmits the radio frequency signal via the antenna 460. The receiver 416 performs analog receive beamforming on the received signal through the antenna 420 to obtain a radio frequency signal related to the second wireless signal, and converts the radio frequency signal into a baseband signal to provide to the MIMO detector 442. MIMO detector 442 performs MIMO detection on the signals received from receiver 416. The receive processor 412 processes the baseband signal output by the MIMO detector 442 to obtain the second wireless signal.
As an embodiment, the UE450 apparatus includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code configured to, with the at least one processor, the UE450 apparatus at least: sending a first wireless signal, wherein the first wireless signal carries a first channel report set, the first channel report set is used for determining at least a first vector group and first channel quality corresponding to a first frequency domain resource set, and the first vector group is used for calculating the first channel quality; receiving a first control signal for determining N radio resource elements for transmitting a second set of channel reports, N being a positive integer; transmitting a second wireless signal, the second wireless signal carrying the second set of channel reports, the second set of channel reports for determining a second channel quality corresponding to at least the first set of frequency domain resources; wherein the time domain resource occupied by the second radio signal is subsequent to the time domain resource occupied by the first radio signal, and whether the first vector group is used for calculating the second channel quality is related to the value of N.
As an embodiment, the UE450 includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: sending a first wireless signal, wherein the first wireless signal carries a first channel report set, the first channel report set is used for determining at least a first vector group and first channel quality corresponding to a first frequency domain resource set, and the first vector group is used for calculating the first channel quality; receiving a first control signal for determining N radio resource elements for transmitting a second set of channel reports, N being a positive integer; transmitting a second wireless signal, the second wireless signal carrying the second set of channel reports, the second set of channel reports for determining a second channel quality corresponding to at least the first set of frequency domain resources; wherein the time domain resource occupied by the second radio signal is subsequent to the time domain resource occupied by the first radio signal, and whether the first vector group is used for calculating the second channel quality is related to the value of N.
As one embodiment, the gNB410 apparatus includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code are configured for use with the at least one processor. The gNB410 apparatus at least: receiving a first wireless signal, wherein the first wireless signal carries a first channel report set, the first channel report set is used for determining at least a first vector group and first channel quality corresponding to a first frequency domain resource set, and the first vector group is used for calculating the first channel quality; transmitting a first control signal for determining N radio resource elements for transmitting a second set of channel reports, N being a positive integer; receiving a second wireless signal carrying the second set of channel reports for determining a second channel quality corresponding to at least the first set of frequency domain resources; wherein the time domain resource occupied by the second radio signal is subsequent to the time domain resource occupied by the first radio signal, and whether the first vector group is used for calculating the second channel quality is related to the value of N.
As an embodiment, the gNB410 includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: receiving a first wireless signal, wherein the first wireless signal carries a first channel report set, the first channel report set is used for determining at least a first vector group and first channel quality corresponding to a first frequency domain resource set, and the first vector group is used for calculating the first channel quality; transmitting a first control signal for determining N radio resource elements for transmitting a second set of channel reports, N being a positive integer; receiving a second wireless signal carrying the second set of channel reports for determining a second channel quality corresponding to at least the first set of frequency domain resources; wherein the time domain resource occupied by the second radio signal is subsequent to the time domain resource occupied by the first radio signal, and whether the first vector group is used for calculating the second channel quality is related to the value of N.
As an embodiment, the UE450 corresponds to a user equipment in the present application.
As an embodiment, the gNB410 corresponds to a base station in the present application.
For one embodiment, the transmit processor 455, the MIMO transmitter 471 and the transmitter 456 are configured to transmit the first wireless signal in this application.
For one embodiment, receiver 416, MIMO detector 442 and receive processor 412 are configured to receive a first wireless signal as described herein.
For one embodiment, the transmit processor 415, the MIMO transmitter 441, and the transmitter 416 are configured to transmit the first control signal in this application.
For one embodiment, receiver 456, MIMO detector 472 and receive processor 452 are configured to receive a first control signal in this application.
For one embodiment, the transmission processor 455, the MIMO transmitter 471 and the transmitter 456 are configured to transmit the second wireless signal in this application.
For one embodiment, receiver 416, MIMO detector 442 and receive processor 412 are configured to receive the second wireless signal in the present application.
For one embodiment, the transmit processor 415, the MIMO transmitter 441, and the transmitter 416 are configured to transmit the first signaling in this application.
For one embodiment, receiver 456, MIMO detector 472 and receive processor 452 are configured to receive the first signaling in this application.
For one embodiment, the transmit processor 415, the MIMO transmitter 441, and the transmitter 416 are configured to transmit the first set of reference signals in the present application.
For one embodiment, receiver 456, MIMO detector 472 and receive processor 452 are configured to receive a first set of reference signals in the present application.
For one embodiment, the transmit processor 415, the MIMO transmitter 441, and the transmitter 416 are configured to transmit the second set of reference signals in the present application.
For one embodiment, receiver 456, MIMO detector 472, and receive processor 452 are configured to receive the second set of reference signals in this application.
Example 5
For theBase station N1The first reference signal group is transmitted in step S11, the first wireless signal is received in step S12, the first signaling is transmitted in step S13, the second reference signal group is transmitted in step S14, the first control signal is transmitted in step S15, and the second wireless signal is received in step S16.
For theUE U2The first reference signal group is received in step S21, the first wireless signal is transmitted in step S22, the first signaling is received in step S23, the second reference signal group is received in step S24, the first control signal is received in step S25, and the second wireless signal is transmitted in step S26.
In embodiment 5, the first wireless signal carries a first set of channel reports used by N1 to determine a first channel quality for at least a first set of vectors and a corresponding first set of frequency domain resources, the first set of vectors used by U2 to compute the first channel quality; the first control signal is used by U2 to determine N radio resource units for transmission of a second set of channel reports, N being a positive integer; the second wireless signal carries the second set of channel reports used by N1 to determine a second channel quality corresponding to at least the first set of frequency-domain resources; whether the first vector set is used by U2 to calculate the second channel quality is related to the value of N after the time domain resources occupied by the first wireless signal.
As a sub-embodiment, a physical shared channel is used for transmitting the second wireless signal.
As a sub-embodiment, if the N is greater than or equal to a first threshold, the second channel report set is used by N1 to determine a second vector group used by U2 to calculate the second channel quality, the first vector group being independent of the calculation for the second channel quality; if the N is less than the first threshold, the second channel report set or the value of N is used by N1 and U2 to determine whether the first vector group is used by U2 to calculate the second channel quality; the first threshold is a positive integer.
As a sub-embodiment, the step in block F2 exists, the first signaling is used by U2 to determine the first threshold.
As a sub-embodiment, the first set of channel reports is used by N1 to determine a third set of vectors corresponding to a second set of frequency domain resources; the second set of frequency domain resources is non-coincident in frequency domain with the first set of frequency domain resources; if the N is less than the first threshold and the second set of channel reports is used by N1 to determine a fourth set of vectors corresponding to the second set of frequency-domain resources, a difference between the third set of vectors and the fourth set of vectors is used by N1 and U2 to determine whether the first set of vectors is used by U2 to calculate the second channel quality.
As a sub-embodiment, if the N is less than a second threshold, the first set of vectors is used by U2 to calculate the second channel quality.
As a sub-embodiment, if N is less than the second threshold, the second set of channel reports is not used by N1 to determine the fourth vector group.
As a sub-embodiment, the step in block F1 exists, the first set of channel reports is used by N1 to determine channel measurements based on the first set of reference signals.
As a sub-embodiment, the step in block F3 exists, the second set of channel reports is used by N1 to determine channel measurements based on the second set of reference signals.
The sub-embodiments described above can be combined arbitrarily without conflict.
Example 6
Embodiment 6 illustrates a first channel report set, a second channel report set, a first threshold and a second threshold, as shown in fig. 6.
In embodiment 6, the sub-bit block # a0 through the sub-bit block # a (2N +1) are 2N +2 sub-bit blocks generated by the UE performing channel measurement based on the received first reference signal group, and the sub-bit block # B0 through the sub-bit block # B (2N +1) are 2N +2 sub-bit blocks generated by the UE performing channel measurement based on the received second reference signal group. The first and second channel report sets each include N channel reports. The same numbered channel reports are for channels covering the same frequency domain resources and QCLs.
The sub-bit block # a0 and the sub-bit block # B0 indicate the number of RI (Rank Indicator), sub-band CQI (Channel Quality Indicator) and non-zero wideband amplitude coefficients of the N Channel reports in the first Channel report set and the second Channel report set, respectively. Sub-bit block # A1 and sub-bit block # B1 indicate wideband CSI for N channel reports in the first and second channel report sets, respectively. The wideband CSI includes a wideband beam selection indication and a wideband amplitude coefficient. CSI for even-numbered subbands in respective channel report #1 in the first and second channel report sets are indicated in sub-bit block # A2 and sub-bit block # B2, respectively. CSI for odd-numbered subbands in respective channel report #1 in the first and second channel report sets are indicated in sub-bit block # A3 and sub-bit block # B3, respectively. The CSI of the subband includes subband magnitude coefficients and subband phase coefficients.
The formula for calculating the subband precoding matrix is as follows:
wherein,biis a DFT beam that is transmitted by the receiver,is a wide-band amplitude coefficient of the amplitude,is the subband amplitude coefficient, cr,l,iIs the subband phase coefficient.
The sub-bit block # a0 and the sub-bit block # B0 are sub-bit blocks included in at least the first channel report set and the second channel report set, respectively. The sub-bit blocks # a1- # a (2N +1) and # B1- # B (2N +1) are sorted according to the number of the channel report and the parity of the sub-band number, respectively, and the priority of the corresponding report is from high to low, as shown in fig. 6. The reporting priorities of the sub-bit blocks and the radio resources allocated to the first and second channel report sets are used to determine the sub-bit blocks included in the first and second channel report sets except for the sub-bit block # a0 and the sub-bit block # B0.
The first set of channel reports comprises at least sub-bit blocks # a0- # A3. The first set of frequency domain resources is one of the odd numbered subbands to which channel report #1 corresponds. The first channel quality information in the sub-bit block # a0 indicates a first channel quality, which is a modulation coding scheme. The wideband CSI in sub-bit block a1 and the odd-numbered sub-band CSI corresponding to the first set of frequency-domain resources in sub-bit block A3 jointly indicate a first vector group, which is a precoding matrix. The first set of vectors is used to calculate the first channel quality. The second set of frequency domain resources is an even numbered subband adjacent to the first set of frequency domain resources. The wideband CSI in sub-bit block a1 and the even-numbered sub-band CSI corresponding to the second set of frequency-domain resources in sub-bit block a2 jointly indicate a third vector group, which is a precoding matrix.
The second channel quality information in the sub-bit block # B0 indicates a second channel quality, which is a modulation coding scheme. The wideband CSI in sub-bit block # B1 and the odd-numbered sub-band CSI corresponding to the first set of frequency-domain resources in sub-bit block # B3 jointly indicate a second vector group, which is a precoding matrix. The wideband CSI in sub-bit block B1 and the even-numbered sub-band CSI corresponding to the second set of frequency-domain resources in sub-bit block B2 jointly indicate a fourth vector group, which is a precoding matrix.
The first control signal is used to determine the N REs for transmitting the second set of channel reports. The first threshold is the number of REs occupied by the sub-bit blocks # B0- # B3. The second threshold is the number of REs occupied by the sub-bit blocks # B0- # B2.
If the N is greater than or equal to the first threshold, the second channel report set includes odd-numbered sub-band CSI corresponding to the first set of frequency-domain resources, the second vector group is used to calculate the second channel quality, and the first vector group is independent of the calculation of the second channel quality.
If the N is equal to the second threshold, the second channel report set does not include odd-numbered sub-band CSI corresponding to the first set of frequency-domain resources, the second channel report set includes even-numbered sub-band CSI corresponding to the second set of frequency-domain resources, a difference between the third set of vectors and the fourth set of vectors is used to determine whether to calculate the second channel quality using the first set of vectors. If the third set of vectors is different from the fourth set of vectors, the second set of vectors or the fourth set of vectors is used for calculating the second channel quality, the first set of vectors being independent of the calculation of the second channel quality. The first set of vectors is used to calculate the second channel quality if the third set of vectors is the same as the fourth set of vectors.
If the N is smaller than the second threshold, the second channel report set does not include odd-numbered sub-band CSI corresponding to the first frequency-domain resource set and the second channel report set includes even-numbered sub-band CSI corresponding to the second frequency-domain resource set, and the first vector group is used for calculating the first channel quality.
Example 7
Embodiment 7 illustrates a first set of frequency domain resources and a second set of frequency domain resources and a third set of frequency domain resources. The squares filled with diagonal lines are a first set of frequency domain resources and the squares filled with dots are a second set of frequency domain resources.
In embodiment 7, in the frequency domain, the first set of frequency domain resources and the second set of frequency domain resources do not completely coincide in the frequency domain. The pattern of the first and second sets of frequency domain resources in the frequency domain includes three cases: in a first case, the first set of frequency domain resources is adjacent to the second set of frequency domain resources in the frequency domain; in a second case, the first set of frequency-domain resources is not contiguous in frequency domain with the second set of frequency-domain resources; in a third case, the first set of frequency domain resources and the second set of frequency domain resources.
As one embodiment, the first and second sets of frequency domain resources are two subbands in the frequency domain, respectively.
As one embodiment, the first set of frequency-domain resources and the second set of frequency-domain resources include a same number of subcarriers.
As one embodiment, the first set of frequency-domain resources and the second set of frequency-domain resources include different numbers of subcarriers.
Example 8
Embodiment 8 illustrates a block diagram of a processing device in a UE, as shown in fig. 8. In fig. 8, the UE processing apparatus 800 is mainly composed of a first transmitter module 801, a second receiver module 802 and a third transmitter module 803.
In embodiment 8, the first transmitter module 801 transmits a first wireless signal, the second receiver module 802 receives a first control signal, and the third transmitter module 803 transmits a second wireless signal.
In embodiment 8, the first radio signal carries a first channel report set, the first channel report set is used to determine at least a first vector group and a first channel quality corresponding to a first set of frequency domain resources, and the first vector group is used to calculate the first channel quality; the first control signal is used to determine N radio resource elements for transmitting a second set of channel reports, N being a positive integer; the second wireless signal carries the second set of channel reports for determining a second channel quality corresponding to at least the first set of frequency domain resources; wherein the time domain resource occupied by the second radio signal is subsequent to the time domain resource occupied by the first radio signal, and whether the first vector group is used for calculating the second channel quality is related to the value of N.
As an embodiment, a physical shared channel is used for transmitting the second wireless signal.
As one embodiment, if N is greater than or equal to a first threshold, the second channel report set is used to determine a second vector group used to calculate the second channel quality, the first vector group being independent of the calculation for the second channel quality; if the N is less than the first threshold, the second channel report set or a value of the N is used to determine whether the first vector set is used to calculate the second channel quality; the first threshold is a positive integer.
For one embodiment, the second receiver module 802 receives a first signaling, which is used to determine the first threshold.
For one embodiment, the first set of channel reports is used to determine a third set of vectors corresponding to a second set of frequency domain resources; the second set of frequency domain resources is non-coincident in frequency domain with the first set of frequency domain resources; if the N is less than the first threshold and the second set of channel reports is used to determine a fourth set of vectors corresponding to the second set of frequency domain resources, a difference between the third set of vectors and the fourth set of vectors is used to determine whether the first set of vectors is used to calculate the second channel quality.
For one embodiment, the first set of vectors is used to calculate the second channel quality if the N is less than a second threshold.
For one embodiment, if N is less than the second threshold, the second set of channel reports is not used to determine the fourth vector group.
For one embodiment, the second receiver module 802 receives a first set of reference signals, which is used to determine channel measurements based on the first set of reference signals.
For one embodiment, the second receiver module 802 receives a second set of reference signals, which is used to determine channel measurements based on the second set of reference signals.
For one embodiment, the first transmitter module includes the transmission processor 455 of embodiment 4.
As an embodiment, the first transmitter module includes the MIMO transmit processor 471 in embodiment 4.
As an example, the first transmitter module includes the transmitter/receiver 456 and the antenna 460 of example 4.
As an embodiment, the second receiver module includes the transmitter/receiver 456 of embodiment 4.
As an embodiment, the second receiver module includes MIMO detector 472 of embodiment 4.
For one embodiment, the second receiver module includes the receive processor 452 of embodiment 4.
For one embodiment, the second receiver module comprises the controller/processor 490 of embodiment 4.
For one embodiment, the third transmitter module includes the transmission processor 455 of embodiment 4.
As an embodiment, the third transmitter module includes the MIMO transmit processor 471 in embodiment 4.
The third transmitter module includes, as one embodiment, the transmitter/receiver 456 and the antenna 460 of embodiment 4.
Example 9
Embodiment 9 is a block diagram illustrating a processing apparatus in a base station, as shown in fig. 9. In fig. 9, the base station processing apparatus 900 is mainly composed of a first receiver module 901, a second transmitter module 902 and a third receiver module 903.
In embodiment 9, the first receiver module 901 receives a first wireless signal, the second transmitter module 902 transmits a first control signal, and the third receiver 903 receives a second wireless signal.
In embodiment 9, the first radio signal carries a first channel report set, the first channel report set is used to determine at least a first vector group and a first channel quality corresponding to a first set of frequency domain resources, and the first vector group is used to calculate the first channel quality; the first control signal is used to determine N radio resource elements for transmitting a second set of channel reports, N being a positive integer; the second wireless signal carries the second set of channel reports for determining a second channel quality corresponding to at least the first set of frequency domain resources; whether the first vector group is used for calculating the second channel quality is related to the value of N after the time domain resource occupied by the first wireless signal.
As an embodiment, a physical shared channel is used for transmitting the second wireless signal.
As one embodiment, if N is greater than or equal to a first threshold, the second channel report set is used to determine a second vector group used to calculate the second channel quality, the first vector group being independent of the calculation for the second channel quality; if the N is less than the first threshold, the second channel report set or a value of the N is used to determine whether the first vector set is used to calculate the second channel quality; the first threshold is a positive integer.
For an embodiment, the second transmitter module 902 sends a first signaling, and the first signaling is used for determining the first threshold.
For one embodiment, the first set of channel reports is used to determine a third set of vectors corresponding to a second set of frequency domain resources; the second set of frequency domain resources is non-coincident in frequency domain with the first set of frequency domain resources; if the N is less than the first threshold and the second set of channel reports is used to determine a fourth set of vectors corresponding to the second set of frequency domain resources, a difference between the third set of vectors and the fourth set of vectors is used to determine whether the first set of vectors is used to calculate the second channel quality.
For one embodiment, the first set of vectors is used to calculate the second channel quality if the N is less than a second threshold.
For one embodiment, if N is less than the second threshold, the second set of channel reports is not used to determine the fourth vector group.
For one embodiment, the second transmitter module 902 transmits a first set of reference signals, which is used to determine channel measurements based on the first set of reference signals.
For one embodiment, the second transmitter module 902 transmits a second set of reference signals, which is used to determine channel measurements based on the second set of reference signals.
For one embodiment, the receiver module includes the receiving processor 452 of embodiment 4.
As an embodiment, the first receiver module includes the MIMO detector 442 of embodiment 4.
For one embodiment, the first receiver module includes the transmitter/receiver 416 and antenna 420 of embodiment 4.
As an embodiment, the second transmitter module includes the MIMO transmission processor 441 in embodiment 4.
As an example, the second transmitter module includes the transmitter/receiver 416 of example 4.
As an embodiment, the second transmitter module includes the transmission processor 415 in embodiment 4.
For one embodiment, the triple receiver module includes the receive processor 452 of embodiment 4.
As an embodiment, the third receiver module includes the MIMO detector 442 of embodiment 4.
The third receiver module includes, as an embodiment, the transmitter/receiver 416 and the antenna 420 of embodiment 4.
It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a hard disk or an optical disk. Alternatively, all or part of the steps of the above embodiments may be implemented by using one or more integrated circuits. Accordingly, the module units in the above embodiments may be implemented in a hardware form, or may be implemented in a form of software functional modules, and the present application is not limited to any specific form of combination of software and hardware. UE and terminal in this application include but not limited to unmanned aerial vehicle, Communication module on the unmanned aerial vehicle, remote control plane, the aircraft, small aircraft, the cell-phone, the panel computer, the notebook, vehicle-mounted Communication equipment, wireless sensor, network card, thing networking terminal, the RFID terminal, NB-IOT terminal, MTC (Machine Type Communication ) terminal, eMTC (enhanced MTC) terminal, the data card, network card, vehicle-mounted Communication equipment, low-cost cell-phone, equipment such as low-cost panel computer. The base station in the present application includes, but is not limited to, a macro cell base station, a micro cell base station, a home base station, a relay base station, and other wireless communication devices.
The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (36)
1. A method in a user equipment for wireless communication, comprising:
-transmitting a first radio signal carrying a first set of channel reports for determining a first channel quality for at least a first set of vectors and a corresponding first set of frequency domain resources, the first set of vectors being used for calculating the first channel quality;
-receiving a first control signal for determining N radio resource elements for transmitting a second set of channel reports, said N being a positive integer;
-transmitting a second radio signal carrying the second set of channel reports for determining a second channel quality corresponding to at least the first set of frequency domain resources;
wherein the time domain resource occupied by the second radio signal is subsequent to the time domain resource occupied by the first radio signal, and whether the first vector group is used for calculating the second channel quality is related to the value of N.
2. The method of claim 1, wherein a physical shared channel is used for transmitting the second wireless signal.
3. The method of claim 1, wherein if the N is greater than or equal to a first threshold, the second channel report set is used to determine a second vector group used to calculate the second channel quality, the first vector group being independent of the calculation for the second channel quality; if the N is less than the first threshold, the second channel report set or a value of the N is used to determine whether the first vector set is used to calculate the second channel quality; the first threshold is a positive integer.
4. The method of claim 3, comprising:
-receiving first signaling for determining the first threshold.
5. The method of claim 3, wherein the first set of channel reports is used to determine a third set of vectors corresponding to a second set of frequency domain resources; the second set of frequency domain resources is non-coincident in frequency domain with the first set of frequency domain resources; if the N is less than the first threshold and the second set of channel reports is used to determine a fourth set of vectors corresponding to the second set of frequency domain resources, a difference between the third set of vectors and the fourth set of vectors is used to determine whether the first set of vectors is used to calculate the second channel quality.
6. The method according to any of claims 1 to 5, wherein said first set of vectors is used for calculating said second channel quality if said N is smaller than a second threshold.
7. The method of claim 5, wherein the second set of channel reports is not used to determine the fourth vector group if the N is less than a second threshold.
8. The method according to any one of claims 1 to 5, comprising:
-receiving a first set of reference signals, the first set of channel reports being used for determining channel measurements based on the first set of reference signals.
9. The method according to any one of claims 1 to 5, comprising:
-receiving a second set of reference signals, the second set of channel reports being used for determining channel measurements based on the second set of reference signals.
10. A method in a base station device for wireless communication, comprising:
-receiving a first radio signal carrying a first set of channel reports for determining a first channel quality for at least a first set of vectors and a corresponding first set of frequency domain resources, the first set of vectors being used for calculating the first channel quality;
-transmitting a first control signal for determining N radio resource elements for transmission of a second set of channel reports, N being a positive integer;
-receiving a second radio signal carrying the second set of channel reports for determining a second channel quality corresponding to at least the first set of frequency domain resources;
wherein the time domain resource occupied by the second radio signal is subsequent to the time domain resource occupied by the first radio signal, and whether the first vector group is used for calculating the second channel quality is related to the value of N.
11. The method of claim 10, wherein a physical shared channel is used for transmitting the second wireless signal.
12. The method of claim 10, wherein if N is greater than or equal to a first threshold, the second channel report set is used to determine a second vector group used to calculate the second channel quality, the first vector group being independent of the calculation for the second channel quality; if the N is less than the first threshold, the second channel report set or a value of the N is used to determine whether the first vector set is used to calculate the second channel quality; the first threshold is a positive integer.
13. The method of claim 12, comprising:
-sending first signaling for determining the first threshold.
14. The method of claim 12, wherein the first set of channel reports is used to determine a third set of vectors corresponding to a second set of frequency domain resources; the second set of frequency domain resources is non-coincident in frequency domain with the first set of frequency domain resources; if the N is less than the first threshold and the second set of channel reports is used to determine a fourth set of vectors corresponding to the second set of frequency domain resources, a difference between the third set of vectors and the fourth set of vectors is used to determine whether the first set of vectors is used to calculate the second channel quality.
15. The method according to any of claims 10 to 14, wherein said first set of vectors is used for calculating said second channel quality if said N is smaller than a second threshold.
16. The method of claim 14, wherein the second set of channel reports is not used to determine the fourth vector group if the N is less than a second threshold.
17. The method according to any one of claims 10 to 14, comprising:
-transmitting a first set of reference signals, the first set of channel reports being used for determining channel measurement results based on the first set of reference signals.
18. The method according to any one of claims 10 to 14, comprising:
-transmitting a second set of reference signals, the second set of channel reports being used for determining channel measurement results based on the second set of reference signals.
19. A user device for wireless communication, comprising:
-a first transmitter module for transmitting a first radio signal carrying a first set of channel reports for determining at least a first set of vectors and a first channel quality corresponding to a first set of frequency domain resources, the first set of vectors being used for calculating the first channel quality;
-a second receiver module for receiving a first control signal for determining N radio resource elements for transmission of a second set of channel reports, said N being a positive integer;
-a third transmitter module for transmitting a second radio signal carrying said second set of channel reports for determining a second channel quality corresponding to at least said first set of frequency domain resources;
wherein the time domain resource occupied by the second radio signal is subsequent to the time domain resource occupied by the first radio signal, and whether the first vector group is used for calculating the second channel quality is related to the value of N.
20. The UE of claim 19, wherein a physical shared channel is used for transmitting the second wireless signal.
21. The UE of claim 19, wherein the second channel report set is used to determine a second vector group used to calculate the second channel quality if N is greater than or equal to a first threshold, and wherein the first vector group is independent of the calculation for the second channel quality; if the N is less than the first threshold, the second channel report set or a value of the N is used to determine whether the first vector set is used to calculate the second channel quality; the first threshold is a positive integer.
22. The UE of claim 21, wherein the second receiver module receives a first signaling, and wherein the first signaling is used to determine the first threshold.
23. The UE of claim 21, wherein the first set of channel reports is configured to determine a third set of vectors corresponding to a second set of frequency domain resources; the second set of frequency domain resources is non-coincident in frequency domain with the first set of frequency domain resources; if the N is less than the first threshold and the second set of channel reports is used to determine a fourth set of vectors corresponding to the second set of frequency domain resources, a difference between the third set of vectors and the fourth set of vectors is used to determine whether the first set of vectors is used to calculate the second channel quality.
24. The user equipment according to any of claims 19 to 23, wherein the first set of vectors is used for calculating the second channel quality if the N is smaller than a second threshold.
25. The UE of claim 23, wherein the second set of channel reports is not used to determine the fourth vector group if N is less than a second threshold.
26. The user equipment of any of claims 19 to 23, wherein the second receiver module receives a first set of reference signals, and wherein the first set of channel reports is used to determine channel measurements based on the first set of reference signals.
27. The user equipment of any of claims 19 to 23, wherein the second receiver module receives a second set of reference signals, the second set of channel reports being used to determine channel measurements based on the second set of reference signals.
28. A base station apparatus for wireless communication, comprising:
-a first receiver module receiving a first wireless signal carrying a first set of channel reports for determining a first channel quality for at least a first set of vectors and a corresponding first set of frequency domain resources, the first set of vectors being used for calculating the first channel quality;
-a second transmitter module for transmitting a first control signal for determining N radio resource units for transmission of a second set of channel reports, said N being a positive integer;
-receiving a second radio signal carrying the second set of channel reports for determining a second channel quality corresponding to at least the first set of frequency domain resources;
wherein the time domain resource occupied by the second radio signal is subsequent to the time domain resource occupied by the first radio signal, and whether the first vector group is used for calculating the second channel quality is related to the value of N.
29. The base station apparatus of claim 28, wherein a physical shared channel is used for transmitting the second wireless signal.
30. The base station device of claim 28, wherein if N is greater than or equal to a first threshold, the second channel report set is used to determine a second vector group used to calculate the second channel quality, the first vector group being independent of the calculation for the second channel quality; if the N is less than the first threshold, the second channel report set or a value of the N is used to determine whether the first vector set is used to calculate the second channel quality; the first threshold is a positive integer.
31. The base station device of claim 30, wherein the second transmitter module transmits a first signaling, and wherein the first signaling is used for determining the first threshold.
32. The base station device of claim 30, wherein the first set of channel reports is configured to determine a third set of vectors corresponding to a second set of frequency domain resources; the second set of frequency domain resources is non-coincident in frequency domain with the first set of frequency domain resources; if the N is less than the first threshold and the second set of channel reports is used to determine a fourth set of vectors corresponding to the second set of frequency domain resources, a difference between the third set of vectors and the fourth set of vectors is used to determine whether the first set of vectors is used to calculate the second channel quality.
33. The base station apparatus according to any of claims 28 to 32, wherein said first set of vectors is used for calculating said second channel quality if said N is smaller than a second threshold.
34. The base station apparatus of claim 32, wherein the second set of channel reports is not used to determine the fourth vector group if the N is less than a second threshold.
35. The base station device of any of claims 28 to 32, wherein the second transmitter module transmits a first set of reference signals, the first set of channel reports being used to determine channel measurements based on the first set of reference signals.
36. The base station device of any of claims 28 to 32, wherein the second transmitter module transmits a second set of reference signals, the second set of channel reports being used to determine channel measurements based on the second set of reference signals.
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CN106656874A (en) * | 2017-01-10 | 2017-05-10 | 河海大学 | Mobile OFDM system channel estimation method based on compressed sensing |
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CN105007126A (en) * | 2014-04-23 | 2015-10-28 | 电信科学技术研究院 | Method, system and device for measuring channel state information |
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