CN109714089B

CN109714089B - Method and device in user equipment and base station for wireless communication

Info

Publication number: CN109714089B
Application number: CN201711008761.1A
Authority: CN
Inventors: 陈晋辉
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2017-10-25
Filing date: 2017-10-25
Publication date: 2020-06-30
Anticipated expiration: 2037-10-25
Also published as: CN109714089A

Abstract

The application discloses a method and a device in user equipment and a base station for wireless communication. The method comprises the steps that user equipment receives a first reference signal group and sends a first wireless signal in sequence, wherein the first wireless signal carries a first report related to the first reference signal group, the first report comprises at least first channel quality information, second channel vector information and second channel quality information, and the first channel vector information and the second channel vector information respectively indicate a first vector group and a second vector group; the second vector group is used to calculate the second channel quality information; if the first report does not include the first channel vector information, the first report is used to select one of the first vector group and the second vector group to calculate the first channel quality information. The method and the device support flexible selection of using the reported adjacent belt PMI or the unreported PMI to calculate the reported channel quality information, thereby supporting more accurate channel state reporting.

Description

Method and device in user equipment and base station for wireless communication

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 Status 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 data 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 in an upper physical layer data 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 some subbands, whether the CQIs in the CSI report are calculated by using PMIs that are not sent is an urgent problem to be solved. The user equipment can use the unsent PMI to calculate the CQI of the corresponding sub-band, the base station performs interpolation according to the reported PMI of the adjacent band, or the user equipment can use the reported PMI of the adjacent band to calculate the CQI of the reported sub-band according to the reference signal received by the sub-band. Each of the above two schemes has advantages under different channel conditions.

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

-receiving a first set of reference signals;

-transmitting a first wireless signal carrying a first report relating to the first set of reference signals, the first report comprising at least first channel quality information, second channel vector information and second channel quality information, the first channel quality information being for a first set of frequency domain resources, the second channel vector information and the second channel quality information being for a second set of frequency domain resources, the first and second sets of frequency domains not completely coinciding in the frequency domain;

wherein the second channel vector information indicates a second vector group, the second vector group being used for calculating the second channel quality information; the first channel vector information indicates a first vector group for the first set of frequency-domain resources; if the first report includes the first channel vector information, the first vector group is used to calculate the first channel quality information; if the first report does not include the first channel vector information, the first report is used to select one of the first vector group and the second vector group to calculate the first channel quality information.

As an embodiment, the above method has a benefit that information included in the channel measurement report can be used by the user equipment and the base station to determine whether the neighbor subband PMI or the local subband PMI is used for calculating the local subband for the subband for which the PMI is not reported. The information included in the channel measurement report reflects the channel conditions, so different choices can be made in different channel conditions.

As an embodiment, the first reference Signal group is a CSI-RS (Channel State information reference Signal).

As an embodiment, the first set of reference signals is used for channel measurement.

As an embodiment, M antenna ports are used for transmitting the first reference signal group, the M being a positive integer greater than or equal to 2.

As an embodiment, the first reference signal group includes M reference signals, and M antenna ports are respectively used for transmitting the M reference signals.

As an embodiment, the antenna port is formed by overlapping a plurality of physical antennas through antenna Virtualization (Virtualization). And the mapping coefficients of the antenna ports to the plurality of physical antennas form a beam forming vector which is used for virtualizing the antennas to form beams.

As an embodiment, the first wireless signal is a physical layer uplink shared channel.

As an embodiment, the first wireless signal is a physical layer uplink shared channel in a subframe.

As an embodiment, the first wireless signal is a physical layer uplink shared channel in a time slot.

As an embodiment, the first wireless signal is an OFDM (Orthogonal Frequency Division Multiplexing) symbol where a physical uplink shared channel is located.

As an embodiment, the first wireless signal is a DFT-s-OFDM (Discrete Fourier Transform Orthogonal Frequency division multiplexing) symbol where a physical layer uplink shared channel is located.

As one embodiment, the first wireless signal is a physical layer control channel.

As one embodiment, the first report is a channel measurement report based on the received first set of reference signals.

As an embodiment, the first report generates the first wireless signal after channel coding and constellation modulation.

As an example, the channel quality information is used to measure the quality of the channel.

As an embodiment, a channel quality codebook is used for generating the channel quality information.

As an embodiment, the channel Quality information 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).

As an embodiment, the channel vector information is used to indicate the channel direction.

As one embodiment, the channel vector information is used to generate a spatial precoding matrix.

As an embodiment, the Channel vector information is one of PMI (Precoding Matrix Indicator) and CDI (Channel Direction Indicator).

As an embodiment, the set of frequency domain resources includes L subcarriers, where L is a positive integer.

As an embodiment, one of the sets of frequency domain resources is a subband (subband). One subband includes L subcarriers, where L is a positive integer greater than 1.

As an embodiment, the first set of frequency-domain resources and the second set of frequency-domain resources are two adjacent subbands.

As an embodiment, the first set of frequency domain resources is an odd numbered one of the subbands.

As an embodiment, the second set of frequency domain resources is an even numbered one of the subbands.

As one embodiment, the first set of frequency domain resources and the second set of frequency domain resources partially coincide in the frequency domain.

As one embodiment, the first set of frequency domain resources is orthogonal in frequency domain to the second set of frequency domain resources.

As an embodiment, one of the vector group values comprises one vector.

As an embodiment, one of the vector groups comprises a plurality of vectors.

As an embodiment, the dimension of one vector in one of the vector groups is related to the number of antenna ports corresponding to the first reference signal group.

As an embodiment, the number of vectors included in one of the vector groups is related to the rank of the channel to which it corresponds.

As an embodiment, a codebook of channel vectors is used to generate the channel vector information.

As an embodiment, a precoding matrix codebook is used for generating the channel vector information.

As an embodiment, the first vector group and the second vector group belong to one same precoding matrix codebook.

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, where the first vector group is a precoding matrix selected by the user equipment from a precoding matrix codebook and most matched with the first channel direction estimate.

As an embodiment, the ue estimates a channel where the second set of frequency domain resources is located based on a received reference signal to obtain a second channel direction estimate, where the second vector group is a precoding matrix selected by the ue from a precoding matrix codebook and most matched to the second channel direction estimate.

As an embodiment, the first vector group and the second vector group belong to one same channel vector codebook.

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, where the first vector group is a channel vector matrix selected by the user equipment from a channel vector codebook and having a smallest difference from the first channel direction estimate.

As an embodiment, the ue estimates a channel where the second set of frequency domain resources is located based on a received reference signal to obtain a second channel direction estimate, where the second vector group is a channel vector matrix selected by the ue from a channel vector codebook and having a smallest difference with the second channel direction estimate.

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 by assuming that a vector group is a precoding matrix, where the first channel quality information indicates the first modulation and coding scheme.

As an embodiment, the user equipment assumes that a 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 information indicates 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 a vector group to select a first modulation and coding scheme most suitable for the estimated channel, where the first channel quality information indicates the first modulation and coding scheme.

As an embodiment, the radio resources used for sending the first report are dynamically allocated; if the number of radio resource blocks occupied by the first report is greater than N, the first report includes the first channel vector information, otherwise, the first report does not include the first channel vector information; and N is a positive integer greater than 1.

As an embodiment, if the first report does not include the first channel vector information, the channel vector information included in the first report is used to select one of the first vector group and the second vector group to calculate the first channel quality information.

As an embodiment, if the first report does not include the first channel vector information, a difference between two vector groups indicated by the first report is used to select one of the first vector group and the second vector group to calculate the first channel quality information.

As one embodiment, if the first report does not include the first channel vector information and the difference between the two indicated vector sets is greater than a target threshold, the first vector set is used to calculate the first channel quality information; the second vector group is used to calculate the first channel quality information if the first report does not include the first channel vector information and the difference between the two indicated vector groups is less than or equal to the target threshold.

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.

As one embodiment, the second vector group is one of the two vector groups.

As an embodiment, the two sets of vectors are for two sets of frequency domain resources adjacent to the first set of frequency domain resources, respectively.

As an embodiment, the target threshold is preconfigured.

As an embodiment, the target threshold is base station configured.

As one embodiment, the target threshold is configured by default.

As an embodiment, if the first report does not include the first channel vector information and the two vector groups indicated by the first report are the same, the second vector group is used to calculate the first channel quality information, if the first report does not include the first channel vector information and the two vector groups are the same, the first vector group is used to calculate the first channel quality information; the two sets of vectors are for two sets of frequency domain resources adjacent to the first set of frequency domain resources, respectively; the second vector group is one of the two vector groups

As an embodiment, if the first report does not include the first channel vector information, the number of channel quality information included in the first report is used to select one of the first vector group and the second vector group to calculate the first channel quality information.

As an embodiment, the first report does not include the first channel vector information, the first vector group is used to calculate the first channel quality information if the first report includes a number of channel quality information greater than a first threshold, otherwise, the second vector group is used to calculate the first channel quality information.

According to one aspect of the application, is characterized in that it comprises

-receiving a first control signal indicating that N time-frequency resource elements are used for transmitting the first wireless signal;

wherein the value of N is used to determine whether the first report includes the first channel vector information.

As an example, the above method has a benefit of dynamically adjusting the content of the channel report according to the radio resources allocated to the channel report to better support uplink data transmission.

As an embodiment, a physical layer control channel is used for transmitting the first control signal.

In one embodiment, the first control signal is a dci (downlink control information).

As an embodiment, the first control signal is transmitted on a physical layer downlink control channel.

As an embodiment, the first control signal is a DCI related to uplink transmission.

As an embodiment, the first control signal indicates a radio resource used for transmitting an uplink shared channel on a subframe where the first report is located.

As an embodiment, N is the number of time-frequency resource units on the PUSCH on which the first report is located, except for the time-frequency resource units used for transmitting the uplink shared channel.

As an embodiment, the time-frequency resource unit is an RB.

As an embodiment, the time-frequency Resource Element is a RE (Resource Element).

According to an aspect of the present application, wherein the first report further comprises third channel vector information and third channel quality information for a third set of frequency domain resources, the third channel vector information indicating a third set of vectors; in the frequency domain, the first set of frequency domain resources is between the second set of frequency domain resources and the third set of frequency domain resources; if the first report does not include the first channel vector information, a difference between the second vector group and the third vector group is used to select one of the first vector group and the second vector group to calculate the first channel quality information.

As an embodiment, the above method has a benefit of inferring a difference between an unreported PMI and a neighbor PMI according to a difference between reported neighbor PMIs, thereby selecting a channel quality calculation manner with possibly higher accuracy.

As an embodiment, the first set of frequency-domain resources, the second set of frequency-domain resources and the third set of frequency-domain resources are sub-bands on three frequency domains, respectively.

As an embodiment, the first set of frequency domain resources is adjacent to the second set of frequency domain resources and the third set of frequency domain resources, respectively, in the frequency domain.

As an embodiment, the number of the first set of frequency domain resources is between the number of the second set of frequency domain resources and the number of the third frequency domain resources.

As an embodiment, the frequency band in which the first frequency domain resource set is located is not higher than the frequency band in which the frequency domain resources in the second frequency domain resource set are located, and the frequency band in which the first frequency domain resource set is located is not lower than the frequency band in which the third frequency domain resource set is located.

As an embodiment, the frequency band in which the first frequency domain resource set is located is not lower than the frequency band in which the frequency domain resources in the second frequency domain resource set are located, and the frequency band in which the first frequency domain resource set is located is not higher than the frequency band in which the third frequency domain resource set is located.

As an embodiment, the first set of frequency domain resources, the second set of frequency domain resources and the third set of frequency domain resources are orthogonal two by two in the frequency domain.

As an embodiment, two of the first, second and third sets of frequency domain resources have overlapping portions in the frequency domain.

As one embodiment, if the first report does not include the first channel vector information and the second vector group and the third vector group differ by more than a target threshold, the first vector group is used to calculate the first channel quality information; the second vector group is used to calculate the first channel quality information if the first report does not include the first channel vector information and a difference between the second vector group and the third vector group is less than or equal to a target threshold.

As an embodiment, the difference of the second vector group and the third vector group is related to the euclidean distance between two vectors comprised by the second vector group and the third vector group, respectively.

As an embodiment, the difference between the second vector group and the third vector group is related to the sum of euclidean distances between identically numbered vectors of the second vector group and the third vector group.

As an embodiment, the difference between the second vector group and the third vector group is the sum of euclidean distances between identically numbered vectors of the second vector group and the third vector group.

As an embodiment, the difference between the second vector group and the third vector group is proportional to the sum of the euclidean distances between the identically numbered vectors of the two vector groups.

As an embodiment, the difference between the second vector group and the third vector group is related to an angle between two vectors comprised by the second vector group and the third vector group, respectively.

As an embodiment, the difference between the second vector group and the third vector group is related to the sum of the angles between the same numbered vectors in the second vector group and the third vector group.

As an embodiment, the difference between the second vector group and the third vector group is the sum of the angles between the same numbered vectors in the second vector group and the third vector group.

As an embodiment, the difference between the second vector group and the third vector group is proportional to the sum of the angles between the same numbered vectors in the second vector group and the third vector group.

As an embodiment, the target threshold is preconfigured.

As an embodiment, the target threshold is base station configured.

As one embodiment, the target threshold is configured by default.

As one embodiment, if the first report does not include the first channel vector information and the second vector group is the same as the third vector group, the second vector group is used to calculate the first channel quality information; the first vector group is used to calculate the first channel quality information if the first report does not include the first channel vector information and the second vector group is different from the third vector group.

According to one aspect of the application, the first report includes P channel quality information, P being a positive integer, and the value of P is used to select one of the first vector group and the second vector group to calculate the first channel quality information.

As an embodiment, since the ue cannot predict whether the channel measurement report includes the PMI of some subbands, if the channel quality information reported in the channel measurement report is calculated according to the PMI of the reported adjacent subband, the ue needs to prepare two pieces of channel quality information for the subband, which are calculated respectively by using the PMI of the subband and the PMI of the adjacent subband, before the channel measurement report, and then determine which channel quality information to report according to the size of the channel measurement report, when the processing capability of the ue cannot meet the required amount of calculation, the ue can only prepare the channel quality information calculated by using the PMI of the subband. The method has the advantages that: and determining whether the PMI of the adjacent subband is used for calculating the channel quality information of the subband according to the processing capacity of the user equipment and the calculation amount required to bear.

As an embodiment, the value of P is related to the number of subbands for which the first report is intended.

As an embodiment, the value of P is proportional to the number of subbands for which the first report is intended.

As an embodiment, the value of P is related to the number of TRPs (Transmit and receive points) for which the first report is directed.

As an embodiment, the value of P is proportional to the number of TRPs for which the first report is directed.

As an embodiment, the value of P is related to the processing power of the user equipment.

As an embodiment, if the value of P is greater than a first threshold, then the first vector set is used to calculate the first channel quality information, otherwise, the second vector set is used to calculate the first channel quality information.

As an embodiment, the user equipment indicates the first threshold.

As an embodiment, the first threshold is related to a type of the user equipment.

As an embodiment, the first threshold is a default.

As one embodiment, if the first report does not include the first channel vector information and the P is greater than the first threshold, the first vector group is used to calculate the first channel quality information; if the first report does not include the first channel vector information and the P is less than or equal to the first threshold, then a difference between the second vector group and the third vector group is used to select one of the first vector group and the second vector group to calculate the first channel quality information.

As one embodiment, the P channel quality information are P channel quality information for a subband.

As an embodiment, the number of channel quality information included in the first report is P.

As an embodiment, the number of channel quality information for a subband included in the first report is P.

-transmitting a second wireless signal;

wherein the second radio signal indicates a first threshold value, a magnitude relationship between the first threshold value and the P being used to select one of the first vector group and the second vector group to calculate the first channel quality information.

As an embodiment, the foregoing method is advantageous in that the ue instructs, according to its processing capability, the base station whether the channel quality information corresponding to the subbands is calculated by using the non-reported subband PMI or the reported neighbor subband PMI if the channel measurement report does not include the partial subband PMI.

As an embodiment, the second radio signal is used for indicating a user equipment capability related parameter.

As one embodiment, the second wireless signal is higher layer signaling.

As an embodiment, the second Radio signal is an RRC (Radio Resource Control) signal.

As one embodiment, the second wireless signal is transmitted on a physical layer shared channel.

As one embodiment, the second wireless signal is physical layer signaling.

For one embodiment, the second wireless signal is transmitted on a physical layer control channel.

As one embodiment, if the first report does not include the first channel vector information and the P is greater than the first threshold, the first vector group is used to calculate the first channel quality information; the second vector group is used to calculate the first channel quality information if the first report does not include the first channel vector information and the P is less than or equal to the first threshold.

As one embodiment, if the first report does not include the first channel vector information and the P is greater than or the first threshold, the first vector group is used to calculate the first channel quality information; the second vector group is used to calculate the first channel quality information if the first report does not include the first channel vector information and the P is less than the first threshold.

The application discloses a method in a base station device for wireless communication, comprising

-transmitting a first set of reference signals;

-receiving a first wireless signal carrying a first report relating to the first set of reference signals, the first report comprising at least first channel quality information, second channel vector information and second channel quality information, the first channel quality information being for a first set of frequency domain resources, the second channel vector information and the second channel quality information being for a second set of frequency domain resources, the first and second sets of frequency domains not completely coinciding in the frequency domain;

wherein the second channel vector information indicates a second vector group, the second vector group being used for calculating the second channel quality information; the first channel vector information indicates a first vector group for the first set of frequency-domain resources; if the first report includes the first channel vector information, the base station apparatus assumes that the first vector group is used for calculating the first channel quality information; if the first report does not include the first channel vector information, the first report is used by the base station device to assume that one of the first vector group and the second vector group is used to calculate the first channel quality information.

As an embodiment, if the first report does not include the first channel vector information, the first report includes channel vector information used by the base station device to assume that one of the first vector group and the second vector group is used to calculate the first channel quality information.

As an embodiment, if the first report does not include the first channel vector information, the difference between the two vector groups indicated by the first report is used by the base station device to assume that one of the first vector group and the second vector group is used to calculate the first channel quality information.

As an embodiment, if the first report does not include the first channel vector information and the difference between the two indicated vector groups is greater than a target threshold, the base station apparatus assumes that the first vector group is used to calculate the first channel quality information; if the first report does not include the first channel vector information and the difference between the two indicated vector groups is less than or equal to the target threshold, then the base station device assumes that the second vector group is used to calculate the first channel quality information.

As one embodiment, the second vector group is one of the two vector groups.

As an embodiment, if the first report does not include the first channel vector information and the two vector groups indicated by the first report are the same, the base station apparatus assumes that the second vector group is used to calculate the first channel quality information; if the first report does not include the first channel vector information and the two vector sets indicated by the first report are different, the base station apparatus assumes that the first vector set is used to calculate the first channel quality information; the two sets of vectors are for two sets of frequency domain resources adjacent to the first set of frequency domain resources, respectively; the second vector group is one of the two vector groups

As an embodiment, if the first report does not include the first channel vector information, the number of channel quality information included in the first report is used by the base station device to calculate the first channel quality information assuming one of the first vector group and the second vector group.

As an embodiment, the first report does not include the first channel vector information, if the number of channel quality information included in the first report is greater than a first threshold, the base station device assumes that the first vector group is used to calculate the first channel quality information, otherwise, the base station device assumes that the second vector group is used to calculate the first channel quality information.

-transmitting a first control signal indicating that N time-frequency resource elements are used for transmitting the first wireless signal;

As an embodiment, the first control signal indicates radio resources used for transmitting an uplink shared channel on a subframe where the first report is located, and N is the number of time-frequency resource units on a PUSCH where the first report is located, except for the time-frequency resource units used for transmitting the uplink shared channel.

According to an aspect of the present application, wherein the first report further comprises third channel vector information and third channel quality information for a third set of frequency domain resources, the third channel vector information indicating a third set of vectors; in the frequency domain, the first set of frequency domain resources is between the second set of frequency domain resources and the third set of frequency domain resources; if the first report does not include the first channel vector information, the difference between the second vector group and the third vector group is used by the base station device to assume that one of the first vector group and the second vector group is used to calculate the first channel quality information.

As an embodiment, if the first report does not include the first channel vector information and the second vector group and the third vector group differ by more than a target threshold, the base station apparatus assumes that the first vector group is used to calculate the first channel quality information; if the first report does not include the first channel vector information and the second vector group and the third vector group differ by less than or a target threshold, then the base station device assumes that the second vector group is used to calculate the first channel quality information.

As an embodiment, if the first report does not include the first channel vector information and the second vector group is the same as the third vector group, the base station apparatus assumes that the second vector group is used to calculate the first channel quality information; if the first report does not include the first channel vector information and the second vector group is different from the third vector group, the base station apparatus assumes that the first vector group is used to calculate the first channel quality information.

According to an aspect of the application, characterized in that the first report comprises P channel quality information, P being a positive integer, the value of P being used by the base station device to assume that one of the first vector group and the second vector group is used for calculating the first channel quality information.

As an embodiment, if the value of P is greater than a first threshold, the base station device assumes that the first vector group is used to calculate the first channel quality information, otherwise, the base station device assumes that the second vector group is used to calculate the first channel quality information.

As an embodiment, if the first report does not include the first channel vector information and the P is greater than the first threshold, the base station apparatus assumes that the first vector group is used to calculate the first channel quality information; if the first report does not include the first channel vector information and the P is less than or equal to the first threshold, the difference between the second vector group and the third vector group is used by the base station device to calculate the first channel quality information assuming one of the first vector group and the second vector group.

-receiving a second wireless signal;

wherein the second radio signal indicates a first threshold value, a magnitude relationship between the first threshold value and the P being used by the base station device to assume that one of the first vector group and the second vector group is used to calculate the first channel quality information.

As an embodiment, if the first report does not include the first channel vector information and the P is greater than the first threshold, the base station apparatus assumes that the first vector group is used to calculate the first channel quality information; if the first report does not include the first channel vector information and the P is less than or equal to the first threshold, the base station device assumes that the second vector group is used to calculate the first channel quality information.

As an embodiment, if the first report does not include the first channel vector information and the P is greater than or the first threshold, the base station apparatus assumes that the first vector group is used to calculate the first channel quality information; if the first report does not include the first channel vector information and the P is less than the first threshold, the base station device assumes that the second vector group is used to calculate the first channel quality information.

The application discloses a user equipment for wireless communication, comprising

-a first receiver module receiving a first set of reference signals;

-a second transmitter module to transmit a first wireless signal carrying a first report related to the first set of reference signals, the first report comprising at least first channel quality information, second channel vector information and second channel quality information, the first channel quality information for a first set of frequency domain resources, the second channel vector information and the second channel quality information for a second set of frequency domain resources, the first and second sets of frequency domains not completely coinciding in the frequency domain;

As an embodiment, the ue is characterized in that the first receiver module receives a first control signal indicating that N time-frequency resource units are used for transmitting the first radio signal; wherein the value of N is used to determine whether the first report includes the first channel vector information.

As an embodiment, the above user equipment is characterized in that the first report further includes third channel vector information and third channel quality information for a third set of frequency domain resources, the third channel vector information indicating a third vector group; in the frequency domain, the first set of frequency domain resources is between the second set of frequency domain resources and the third set of frequency domain resources; if the first report does not include the first channel vector information, a difference between the second vector group and the third vector group is used to select one of the first vector group and the second vector group to calculate the first channel quality information.

As an embodiment, the above user equipment is characterized in that the first report includes P pieces of channel quality information, P is a positive integer, and a value of P is used to select one of the first vector group and the second vector group to calculate the first channel quality information.

As an embodiment, the above user equipment is characterized in that the second transmitter module transmits a second wireless signal; wherein the second radio signal indicates a first threshold value, a magnitude relationship between the first threshold value and the P being used to select one of the first vector group and the second vector group to calculate the first channel quality information.

A base station apparatus for wireless communication includes

-a first transmitter module transmitting a first set of reference signals;

-a second receiver module receiving a first wireless signal carrying a first report relating to the first set of reference signals, the first report comprising at least first channel quality information, second channel vector information and second channel quality information, the first channel quality information being for a first set of frequency domain resources, the second channel vector information and the second channel quality information being for a second set of frequency domain resources, the first and second sets of frequency domains not completely coinciding in the frequency domain;

As an embodiment, the base station device is characterized in that the first transmitter module transmits a first control signal, where the first control signal indicates that N time-frequency resource units are used for transmitting the first wireless signal; wherein the value of N is used to determine whether the first report includes the first channel vector information.

As an embodiment, the base station device is characterized in that the first report further includes third channel vector information and third channel quality information for a third set of frequency domain resources, the third channel vector information indicating a third vector group; in the frequency domain, the first set of frequency domain resources is between the second set of frequency domain resources and the third set of frequency domain resources; if the first report does not include the first channel vector information, the difference between the second vector group and the third vector group is used by the base station device to assume that one of the first vector group and the second vector group is used to calculate the first channel quality information.

As an embodiment, the base station apparatus as described above is characterized in that the first report includes P channel quality information, P being a positive integer, the value of P being used by the base station apparatus assuming that one of the first vector group and the second vector group is used to calculate the first channel quality information.

As an embodiment, the base station apparatus is characterized in that the second receiver module receives a second wireless signal; wherein the second radio signal indicates a first threshold value, a magnitude relationship between the first threshold value and the P being used by the base station device to assume that one of the first vector group and the second vector group is used to calculate the first channel quality information.

As an embodiment, compared with the prior art, the present application has the following technical advantages:

for the sub-band where the channel quality information is reported but the channel vector information is not reported, flexibly selecting whether to use the reported adjacent band PMI or the unreported PMI to calculate the reported channel quality information according to the channel condition embodied in the channel report, thereby supporting more accurate channel state reporting;

-enabling selection of whether to use reported neighbor PMI or unreported PMI to calculate reported channel quality information based on ue capability and computational effort, thereby enabling more accurate channel state reporting across ue capability.

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 shows a flow diagram of a first set of reference signals and a first 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 report according to an embodiment of the present application;

fig. 7 shows a schematic diagram of a first set of frequency domain resources, a second set of frequency domain resources and a third 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 receives a first reference signal group and transmits a first radio signal in sequence; wherein the first radio signal carries a first report relating to the first set of reference signals, the first report comprising at least first channel quality information, second channel vector information and second channel quality information, the first channel quality information being for a first set of frequency domain resources, the second channel vector information and the second channel quality information being for a second set of frequency domain resources, the first and second sets of frequency domains not fully coinciding in the frequency domain; the second channel vector information indicates a second vector group, the second vector group being used for calculating the second channel quality information; the first channel vector information indicates a first vector group for the first set of frequency-domain resources; if the first report includes the first channel vector information, the first vector group is used to calculate the first channel quality information; if the first report does not include the first channel vector information, the first report is used to select one of the first vector group and the second vector group to calculate the first channel quality information.

For one embodiment, the first reference signal group is a CSI-RS.

As an embodiment, the first wireless signal is an OFDM symbol where a PUSCH (Physical Uplink shared Channel) is located.

As one embodiment, the first report is a channel state information report.

As an embodiment, the first channel vector information and the second channel vector information are two subband PMIs.

As an embodiment, the first channel quality information and the second channel quality information are used to indicate an MCS recommended by the user equipment.

As an embodiment, a vector group codebook is used to indicate the first vector group and the second vector group.

As an embodiment, a CQI codebook is used to indicate the first channel quality information and the second channel quality information.

As one embodiment, the time-frequency resources occupied by the first report are used to determine whether the first report includes the first channel vector information.

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 operator-corresponding internet protocol services, and may specifically include the internet, an intranet, IMS (IP multimedia Subsystem), and 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 reference signal group in the present application is generated in the PHY 301.

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 embodiment, the second radio signal in this application is generated in the RRC sublayer 306.

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:

receiver 456 is configured to convert radio frequency signals received via antenna 460 into baseband signals for provision to MIMO detector 472; analog receive beamforming is processed in the receiver 456;

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 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 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.

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);

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:

receiver 416 is used to convert the radio frequency signals received through antenna 420 into baseband signals for MIMO detector 442; analog receive beamforming is processed in receiver 416;

a MIMO detector 442 for MIMO detecting signals received from receiver 416, and providing MIMO detected symbols to receive processor 442;

MIMO detector 442 outputs analog receive beamforming vectors to receiver 416;

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;

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 arrives at the controller/processor 490 via the upper layer packet and is passed to the transmit processor 455 for generation. 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 baseband signal output by MIMO detector 442 is output by receive processor 412 to controller/processor 440 for correlation information.

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: receiving a first set of reference signals; transmitting a first wireless signal carrying a first report related to the first set of reference signals, the first report including at least first channel quality information, second channel vector information, and second channel quality information, the first channel quality information for a first set of frequency domain resources, the second channel vector information and the second channel quality information for a second set of frequency domain resources, the first and second sets of frequency domains not completely coinciding in the frequency domain; wherein the second channel vector information indicates a second vector group, the second vector group being used for calculating the second channel quality information; the first channel vector information indicates a first vector group for the first set of frequency-domain resources; if the first report includes the first channel vector information, the first vector group is used to calculate the first channel quality information; if the first report does not include the first channel vector information, the first report is used to select one of the first vector group and the second vector group to calculate the first channel quality information.

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: receiving a first set of reference signals; transmitting a first wireless signal carrying a first report related to the first set of reference signals, the first report including at least first channel quality information, second channel vector information, and second channel quality information, the first channel quality information for a first set of frequency domain resources, the second channel vector information and the second channel quality information for a second set of frequency domain resources, the first and second sets of frequency domains not completely coinciding in the frequency domain; wherein the second channel vector information indicates a second vector group, the second vector group being used for calculating the second channel quality information; the first channel vector information indicates a first vector group for the first set of frequency-domain resources; if the first report includes the first channel vector information, the first vector group is used to calculate the first channel quality information; if the first report does not include the first channel vector information, the first report is used to select one of the first vector group and the second vector group to calculate the first channel quality information.

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: transmitting a first set of reference signals; receiving a first wireless signal carrying a first report related to the first set of reference signals, the first report including at least first channel quality information, second channel vector information, and second channel quality information, the first channel quality information for a first set of frequency domain resources, the second channel vector information and the second channel quality information for a second set of frequency domain resources, the first and second sets of frequency domains not completely coinciding in the frequency domain; wherein the second channel vector information indicates a second vector group, the second vector group being used for calculating the second channel quality information; the first channel vector information indicates a first vector group for the first set of frequency-domain resources; if the first report includes the first channel vector information, the base station apparatus assumes that the first vector group is used for calculating the first channel quality information; if the first report does not include the first channel vector information, the first report is used by the base station device to assume that one of the first vector group and the second vector group is used to calculate the first channel quality information.

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: transmitting a first set of reference signals; receiving a first wireless signal carrying a first report related to the first set of reference signals, the first report including at least first channel quality information, second channel vector information, and second channel quality information, the first channel quality information for a first set of frequency domain resources, the second channel vector information and the second channel quality information for a second set of frequency domain resources, the first and second sets of frequency domains not completely coinciding in the frequency domain; wherein the second channel vector information indicates a second vector group, the second vector group being used for calculating the second channel quality information; the first channel vector information indicates a first vector group for the first set of frequency-domain resources; if the first report includes the first channel vector information, the base station apparatus assumes that the first vector group is used for calculating the first channel quality information; if the first report does not include the first channel vector information, the first report is used by the base station device to assume that one of the first vector group and the second vector group is used to calculate the first channel quality information.

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.

As an example, the transmit processor 415, MIMO transmitter 441 and transmitter 416 are used 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 as described herein.

For one embodiment, the transmit processor 455, the MIMO transmitter 471 and the transmitter 456 are used to transmit the first wireless signal in this application.

For one embodiment, receiver 416, MIMO detector 442 and receive processor 412 are used to receive the first wireless signal in the present application.

As an example, the transmit processor 415, MIMO transmitter 441, and transmitter 416 may be used 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 the first control signal in this application.

As an example, the operation is sending, at least the first three of the transmit processor 455, MIMO transmitter 471, transmitter 456, and controller/processor 490 are used to send the second wireless signal in this application.

As an example, at least the first three of the transmitter, receiver 416, MIMO detector 442, receive processor 412 and controller/processor 440 may be configured to receive a second wireless signal as described herein.

Example 5

Embodiment 5 illustrates a flow chart of wireless signal transmission according to the present application, as shown in fig. 5. In fig. 5, base station N1 is the serving cell maintaining base station for UE U2. The steps identified in blocks F1 and F2 are optional.

For theBase station N1The second wireless signal is received in step S11, the first control signal is transmitted in step S12, the first reference signal group is transmitted in step S13, and the first wireless signal is received in step S14.

For theUE U2The second wireless signal is transmitted in step S21, the first control signal is received in step S22, the first reference signal group is received in step S23, and the first wireless signal is transmitted in step S24.

In embodiment 5, the first radio signal carries a first report relating to the first set of reference signals, the first report comprising at least first channel quality information, second channel vector information and second channel quality information, the first channel quality information being for a first set of frequency domain resources, the second channel vector information and the second channel quality information being for a second set of frequency domain resources, the first and second sets of frequency domains not fully coinciding in the frequency domain; the second channel vector information is used by U2 to indicate a second vector group to N1, the second vector group is used by U2 to calculate the second channel quality information, N1 assumes that the second vector group is used to calculate the second channel quality information; first channel vector information is used by U2 to indicate a first vector group for the first set of frequency-domain resources to N1; if the first report includes the first channel vector information, the first set of vectors is used by U2 for calculating the first channel quality information, N1 assumes that the first set of vectors is used by U2 for calculating the first channel quality information; if the first report does not include the first channel vector information, the first report is used by U2 to select one of the first vector group and the second vector group to calculate the first channel quality information, the first report is used by N1 to assume that one of the first vector group and the second vector group is used by U2 to calculate the first channel quality information.

As a sub-embodiment, the step in block F2 exists, the first control signal is used by N1 to indicate to U2 that N time-frequency resource units are used by U2 for transmitting the first wireless signal, the value of N is used by N1 and U2 to determine whether the first report includes the first channel vector information.

As a sub-embodiment, the first report further includes third channel vector information and third channel quality information for a third set of frequency domain resources, the third channel vector information being indicated by U2 to N1 as a third vector group; in the frequency domain, the first set of frequency domain resources is between the second set of frequency domain resources and the third set of frequency domain resources; if the first report does not include the first channel vector information, the difference between the second vector group and the third vector group is used by U2 to select one of the first vector group and the second vector group to calculate the first channel quality information, and the difference between the second vector group and the third vector group is used by N1 to assume that one of the first vector group and the second vector group is used by U2 to calculate the first channel quality information.

As a sub-embodiment, the first report includes P channel quality information, P being a positive integer, the value of P being used by U2 to select one of the first vector group and the second vector group to calculate the first channel quality information, the value of P being used by N1 to assume that one of the first vector group and the second vector group is used by U2 to calculate the first channel quality information.

As a sub-embodiment, the step in block F1 exists, the second wireless signal indicating a first threshold, a magnitude relationship between the first threshold and the P used by U2 to select one of the first vector group and the second vector group to compute the first channel quality information, the magnitude relationship between the first threshold and the P used by N1 to compute the first channel quality information assuming one of the first vector group and the second vector group is U2.

The sub-embodiments described above can be combined arbitrarily without conflict.

Example 6

Embodiment 6 illustrates the first report. In fig. 6, the squares filled with oblique lines are first channel quality information, the squares filled with cross are second channel quality information, the squares filled with gray are first channel vector information, and the squares filled with dots are second channel vector information.

In embodiment 6, there are two cases of the content of the first report: in a first case, the first report includes first channel vector information, first channel quality information, second channel vector information, and second channel quality information; in a second case, the first report includes the first channel quality information, the second channel vector information, and the second channel vector information, but does not include the first channel vector information. In a second case, the first report is used by the ue to select one of the vector group indicated by the first channel vector information and the vector group indicated by the second channel vector information to calculate the first channel quality information, and the first report is used by the base station to assume that one of the vector group indicated by the first channel vector information and the vector group indicated by the second channel vector information is used by the ue to calculate the first channel quality information.

As one embodiment, the number of radio resources occupied by the first report is used to determine whether the first report includes the first channel vector information.

As an embodiment, the first channel quality information and the second channel quality information are respectively for subbands adjacent in a frequency domain.

Example 7

Embodiment 7 illustrates a first set of frequency domain resources, a second set of frequency domain resources and a third set of frequency domain resources. The grid filled with oblique lines is a first frequency domain resource set, the grid filled with dots is a second frequency domain resource set, and the grid filled with cross points is a third frequency domain resource set.

In embodiment 7, in the frequency domain, any two of the first set of frequency domain resources, the second set of frequency domain resources and the third set of frequency domain resources are not completely coincident, and the first set of frequency domain resources is between the second set of frequency domain resources and the third set of frequency domain resources. The pattern of the first, second and third 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 in frequency domain to the second set of frequency domain resources and the third set of frequency domain resources; in a second case, the first set of frequency domain resources is not adjacent in frequency domain to the second set of frequency domain resources and the third set of frequency domain resources; in a third case, the first set of frequency domain resources partially overlaps with the second set of frequency domain resources and the third set of frequency domain resources in the frequency domain.

As an embodiment, the first set of frequency domain resources, the second set of frequency domain resources and the third set of frequency domain resources are three subbands in the frequency domain, respectively.

As an embodiment, the first set of frequency domain resources, the second set of frequency domain resources and the third set of frequency domain resources comprise the same number of subcarriers.

As an embodiment, the first set of frequency domain resources, the second set of frequency domain resources and the third set of frequency domain resources comprise 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 receiver module 801 and a second transmitter module 802.

In embodiment 8, the first receiver module 801 receives a first set of reference signals and the second transmitter module transmits a first wireless signal.

In embodiment 8, the first radio signal carries a first report relating to the first set of reference signals, the first report comprising at least first channel quality information, second channel vector information and second channel quality information, the first channel quality information being for a first set of frequency domain resources, the second channel vector information and the second channel quality information being for a second set of frequency domain resources, the first and second sets of frequency domains not fully coinciding in the frequency domain; the second channel vector information indicates a second vector group, the second vector group being used for calculating the second channel quality information; the first channel vector information indicates a first vector group for the first set of frequency-domain resources; if the first report includes the first channel vector information, the first vector group is used to calculate the first channel quality information; if the first report does not include the first channel vector information, the first report is used to select one of the first vector group and the second vector group to calculate the first channel quality information.

As an embodiment, the ue is characterized in that the first receiver module 801 receives a first control signal indicating that N time-frequency resource units are used for transmitting the first radio signal; wherein the value of N is used to determine whether the first report includes the first channel vector information.

As an embodiment, the above user equipment is characterized in that the second transmitter module 802 transmits a second wireless signal; wherein the second radio signal indicates a first threshold value, a magnitude relationship between the first threshold value and the P being used to select one of the first vector group and the second vector group to calculate the first channel quality information.

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 transmitter module 901 and a second receiver module 902.

In embodiment 9, the first transmitter module 901 transmits a first set of reference signals, and the second receiver module 902 receives a first wireless signal.

In embodiment 9, the first radio signal carries a first report relating to the first set of reference signals, the first report comprising at least first channel quality information, second channel vector information and second channel quality information, the first channel quality information being for a first set of frequency domain resources, the second channel vector information and the second channel quality information being for a second set of frequency domain resources, the first and second sets of frequency domains not fully coinciding in the frequency domain; the second channel vector information indicates a second vector group, the second vector group being used for calculating the second channel quality information; the first channel vector information indicates a first vector group for the first set of frequency-domain resources; if the first report includes the first channel vector information, the base station apparatus assumes that the first vector group is used for calculating the first channel quality information; if the first report does not include the first channel vector information, the first report is used by the base station device to assume that one of the first vector group and the second vector group is used to calculate the first channel quality information.

As an embodiment, the above base station device is characterized by including the first transmitter module 901 transmitting a first control signal, where the first control signal indicates that N time-frequency resource units are used for transmitting the first wireless signal; wherein the value of N is used to determine whether the first report includes the first channel vector information.

As an embodiment, the base station device is characterized in that the second receiver module 902 receives a second wireless signal; wherein the second radio signal indicates a first threshold value, a magnitude relationship between the first threshold value and the P being used by the base station device to assume that one of the first vector group and the second vector group is used to calculate the first channel quality information.

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. The UE and the terminal in this application include but are not limited to unmanned aerial vehicle, communication module on the unmanned aerial vehicle, remote control plane, aircraft, small aircraft, cell-phone, tablet computer, notebook, vehicle-mounted communication equipment, wireless sensor, network card, internet of things terminal, RFID terminal, NB-IOT terminal, MTC (Machine type communication ) terminal, eMTC (enhanced MTC) terminal, data card, network card, vehicle-mounted communication equipment, low-cost cell-phone, equipment such as low-cost tablet 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

1. A method in a user equipment for wireless communication, comprising:

-receiving a first set of reference signals;

2. The method of claim 1, comprising:

3. The method of claim 1 or 2, wherein the first report further comprises third channel vector information and third channel quality information for a third set of frequency domain resources, the third channel vector information indicating a third set of vectors; in the frequency domain, the first set of frequency domain resources is between the second set of frequency domain resources and the third set of frequency domain resources; if the first report does not include the first channel vector information, a difference between the second vector group and the third vector group is used to select one of the first vector group and the second vector group to calculate the first channel quality information.

4. The method of claim 1 or 2, wherein the first report comprises P channel quality information, wherein P is a positive integer, and wherein the value of P is used to select one of the first vector group and the second vector group for calculating the first channel quality information.

5. The method of claim 3, wherein the first report includes P channel quality information, wherein P is a positive integer, and wherein the value of P is used to select one of the first vector group and the second vector group to calculate the first channel quality information.

6. The method of claim 4, comprising:

-transmitting a second wireless signal;

7. The method of claim 5, comprising:

-transmitting a second wireless signal;

8. A method in a base station device for wireless communication, comprising:

-transmitting a first set of reference signals;

9. The method of claim 8, comprising:

10. The method according to claim 8 or 9, wherein the first report further comprises third channel vector information and third channel quality information for a third set of frequency domain resources, the third channel vector information indicating a third set of vectors; in the frequency domain, the first set of frequency domain resources is between the second set of frequency domain resources and the third set of frequency domain resources; if the first report does not include the first channel vector information, the difference between the second vector group and the third vector group is used by the base station device to assume that one of the first vector group and the second vector group is used to calculate the first channel quality information.

11. The method according to claim 8 or 9, wherein the first report comprises P channel quality information, P being a positive integer, the value of P being used by the base station device assuming that one of the first vector group and the second vector group is used for calculating the first channel quality information.

12. The method of claim 10, wherein the first report includes P channel quality information, wherein P is a positive integer, and wherein the value of P is used by the base station device to assume that one of the first vector group and the second vector group is used to calculate the first channel quality information.

13. The method of claim 11, comprising:

-receiving a second wireless signal;

14. The method of claim 12, comprising:

-receiving a second wireless signal;

15. A user device for wireless communication, comprising:

-a first receiver module receiving a first set of reference signals;

16. The UE of claim 15, wherein the first receiver module receives a first control signal indicating that N time-frequency resource elements are used for transmitting the first wireless signal; wherein the value of N is used to determine whether the first report includes the first channel vector information.

17. The user equipment of claim 15 or 16, wherein the first report further comprises third channel vector information and third channel quality information for a third set of frequency domain resources, the third channel vector information indicating a third set of vectors; in the frequency domain, the first set of frequency domain resources is between the second set of frequency domain resources and the third set of frequency domain resources; if the first report does not include the first channel vector information, a difference between the second vector group and the third vector group is used to select one of the first vector group and the second vector group to calculate the first channel quality information.

18. The UE of claim 15 or 16, wherein the first report includes P channel quality information, wherein P is a positive integer, and wherein the value of P is used to select one of the first vector group and the second vector group for calculating the first channel quality information.

19. The UE of claim 17, wherein the first report comprises P channel quality information, wherein P is a positive integer, and wherein the value of P is used to select one of the first vector group and the second vector group for calculating the first channel quality information.

20. The user equipment of claim 18, wherein the second transmitter module transmits a second wireless signal; wherein the second radio signal indicates a first threshold value, a magnitude relationship between the first threshold value and the P being used to select one of the first vector group and the second vector group to calculate the first channel quality information.

21. The user equipment of claim 19, wherein the second transmitter module transmits a second wireless signal; wherein the second radio signal indicates a first threshold value, a magnitude relationship between the first threshold value and the P being used to select one of the first vector group and the second vector group to calculate the first channel quality information.

22. A base station apparatus for wireless communication, comprising:

-a first transmitter module transmitting a first set of reference signals;

23. The base station apparatus of claim 22, comprising said first transmitter module transmitting a first control signal indicating that N time-frequency resource elements are used for transmitting said first wireless signal; wherein the value of N is used to determine whether the first report includes the first channel vector information.

24. The base station device of claim 22 or 23, wherein the first report further comprises third channel vector information and third channel quality information for a third set of frequency domain resources, the third channel vector information indicating a third set of vectors; in the frequency domain, the first set of frequency domain resources is between the second set of frequency domain resources and the third set of frequency domain resources; if the first report does not include the first channel vector information, the difference between the second vector group and the third vector group is used by the base station device to assume that one of the first vector group and the second vector group is used to calculate the first channel quality information.

25. The base station apparatus of claim 22 or 23, wherein the first report comprises P channel quality information, wherein P is a positive integer, and wherein the value of P is used by the base station apparatus assuming that one of the first vector group and the second vector group is used for calculating the first channel quality information.

26. The base station apparatus of claim 24, wherein the first report includes P channel quality information, wherein P is a positive integer, and wherein the value of P is used by the base station apparatus to assume that one of the first vector group and the second vector group is used to calculate the first channel quality information.

27. The base station device of claim 25, wherein the second receiver module receives a second wireless signal; wherein the second radio signal indicates a first threshold value, a magnitude relationship between the first threshold value and the P being used by the base station device to assume that one of the first vector group and the second vector group is used to calculate the first channel quality information.

28. The base station device of claim 26, wherein the second receiver module receives a second wireless signal; wherein the second radio signal indicates a first threshold value, a magnitude relationship between the first threshold value and the P being used by the base station device to assume that one of the first vector group and the second vector group is used to calculate the first channel quality information.