CN109150412B

CN109150412B - Method and device used in user and base station of wireless communication

Info

Publication number: CN109150412B
Application number: CN201710459284.4A
Authority: CN
Inventors: 吴克颖
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2017-06-16
Filing date: 2017-06-16
Publication date: 2021-10-29
Anticipated expiration: 2037-06-16
Also published as: CN109150412A

Abstract

The application discloses a method and a device used in a user and a base station of wireless communication. The user equipment receives the first reference signal and then transmits first information, which is used to determine the first integer. If the first integer is equal to 1, transmitting first channel information and second channel information; otherwise, the third channel information is sent. Wherein the first integer is greater than 0, measurements for the first reference signal are used to determine the first integer; the second channel information is used to determine L1 first class vectors, the first channel information is used to determine the L1, the third channel information is used to determine L2 first class vectors, the L1 and the L2 are positive integers, respectively, and the L1 is not greater than the L2. The method allows the user to optimize the feedback mechanism according to the actual channel state, including adopting different feedback contents and feedback overhead, thereby improving the feedback precision and reducing the feedback overhead.

Description

Method and device used in user and base station of wireless communication

Technical Field

The present application relates to a method and an apparatus for transmitting a wireless signal in a wireless communication system, and more particularly, to a method and an apparatus for transmitting a wireless signal in a wireless communication system supporting 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. Implicit (im) CSI feedback is supported in legacy third generation partnership Project (3 GPP-3 rd generation partner Project) cellular network systems.

In the 5G system, as the number of antennas equipped on the base station side increases, the accuracy of the conventional implicit CSI feedback is difficult to meet the requirement of multi-antenna transmission. Therefore, studies for enhancing CSI are proposed in 3GPP R (Release) 14. Among them, LC (Linear Combination) is receiving attention as an enhanced CSI feedback scheme. Feedback Overhead (Overhead) required for enhanced CSI feedback is increased greatly, and therefore, how to reduce the Overhead of enhanced CSI feedback is a problem to be solved.

Disclosure of Invention

The inventors have found through research that the required feedback content and feedback overhead are different when the channels have different ranks. By utilizing the characteristic to optimize the CSI feedback mechanism, the feedback overhead can be reduced on the premise of not influencing the feedback precision. In response to the above findings, the present application discloses a solution. It should be noted that although the initial motivation of the present application was for multi-antenna systems, the present application is also applicable to single-antenna systems. Without conflict, embodiments and features in embodiments in the user equipment of the present application may be applied to the base station and vice versa. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

The application discloses a method in a user equipment used for wireless communication, characterized by comprising:

-receiving a first reference signal;

-transmitting first information, the first information being used for determining a first integer;

-transmitting first channel information and second channel information if said first integer is equal to 1; otherwise, sending third channel information;

wherein the first integer is greater than 0, measurements for the first reference signal are used to determine the first integer; the second channel information is used to determine L1 first class vectors, the first channel information is used to determine the L1, the third channel information is used to determine L2 first class vectors, the L1 and the L2 are positive integers, respectively, and the L1 is not greater than the L2.

As an example, the value of L1 is variable.

As an embodiment, the user equipment determines the value of L1 by itself from measurements for the first reference signal.

As one example, the L1 is equal to the L2.

As one embodiment, the L1 is smaller than the L2.

As an example, the value of L2 is preset.

As an embodiment, the value of L2 is configured in advance by higher layer signaling.

As an embodiment, the measurements for the first reference signal are used to generate a first channel matrix, the first integer being a rank (rank) of the first channel matrix.

As an embodiment, the above method has the advantage of allowing the user equipment to adopt different CSI feedback mechanisms, including different feedback contents and feedback overhead, for channels of different ranks. Therefore, CSI feedback can be optimized fully according to the actual channel state, the feedback precision is improved, and the feedback overhead is reduced.

As one embodiment, the user equipment performs channel estimation for the first reference signal to determine the first integer.

As one embodiment, the user equipment performs channel estimation for the first reference signal to determine the first channel matrix.

As one embodiment, the first integer is a positive integer no greater than 8.

As an embodiment, the L1 first-type vectors are column vectors.

As an embodiment, the L2 first-type vectors are column vectors.

As one embodiment, measurements for the first reference signal are used to determine the L1, the L1 first class vectors.

As an embodiment, the L1 first-type vectors are quantized from the first channel matrix.

As an embodiment, any one of the L1 first-type vectors belongs to a first vector set, the first vector set comprising a positive integer number of vectors.

As an embodiment, a modulus (norm) of a product of any vector in the first vector set that does not belong to the L1 first class vectors and the first channel matrix is smaller than a modulus of a product of any first class vector in the L1 first class vectors and the first channel matrix.

As an embodiment, a modulus of a product of { a conjugate transpose of a first reference vector }, the first channel matrix, the first reference vector } is smaller than a modulus of a product of { a conjugate transpose of a second reference vector, the first channel matrix, the second reference vector }, the first reference vector is any vector in the first set of vectors that does not belong to the L1 first-type vectors, and the second reference vector is any vector in the L1 first-type vectors.

As an embodiment, a modulus of a product of each of the L1 first-type vectors and the first channel matrix is greater than a first threshold, which is a real number greater than 0.

As a sub-embodiment of the above embodiment, the first threshold is preset.

As a sub-embodiment of the above embodiment, the first threshold is configurable.

As an example, the modulus of a complex number is equal to the square of the real part of the complex number plus the square of the imaginary part of the complex number, and then squared.

As an embodiment, the modulus of a vector is equal to the sum of the squares of the moduli of all elements in the vector and the reopening.

As one embodiment, the second channel information indicates an index of each of the L1 first type vectors in the first set of vectors.

As an embodiment, measurements for the first reference signal are used to determine the L2 first-type vectors.

As an embodiment, the L2 first-type vectors are quantized from the first channel matrix.

As an embodiment, any one of the L2 first-type vectors belongs to the first vector set.

As an embodiment, a modulus of a product of any vector of the first vector set that does not belong to the L2 first class vectors and the first channel matrix is smaller than a modulus of a product of any vector of the L2 first class vectors and the first channel matrix.

As an embodiment, a modulus of a product of { a conjugate transpose of a third reference vector, the first channel matrix, the third reference vector } is smaller than a modulus of a product of { a conjugate transpose of a fourth reference vector, the first channel matrix, the fourth reference vector }, the third reference vector is any vector in the first set of vectors that does not belong to the L2 first-type vectors, and the fourth reference vector is any first-type vector in the L2 first-type vectors.

As one embodiment, the third channel information indicates an index of each of the L2 first type vectors in the first set of vectors.

As an embodiment, the first Reference Signal includes at least one of { CSI-RS (Channel State Information-Reference Signal) }, DMRS (DeModulation Reference Signals), TRS (fine/frequency tracking references Signals, fine time/frequency domain tracking Reference Signals), PTRS (Phase error tracking Reference Signals), PSS (Primary Synchronization Signal), SSS (Secondary Synchronization Signal ), PSSs (Primary link Synchronization Signal, Primary Secondary link Synchronization Signal), SSSs (Secondary link Synchronization Signal).

As one embodiment, the first reference signal is wideband.

As one embodiment, the system bandwidth is divided into a positive integer number of frequency domain regions, the first reference signal occurs over all frequency domain regions within the system bandwidth, and any one of the positive integer number of frequency domain regions includes a positive integer number of consecutive subcarriers.

As an embodiment, the number of subcarriers included in any two of the positive integer number of frequency domain regions is the same.

As an embodiment, any one of the positive integer number of frequency domain regions includes a positive integer number of PRBs (Physical Resource blocks).

As an embodiment, the first information is carried by physical layer signaling.

As an embodiment, the first Information is UCI (Uplink Control Information).

As an embodiment, the first integer is RI (Rank Indicator).

As an embodiment, the first information is transmitted on an uplink physical layer data channel (i.e., an uplink channel that can be used to carry physical layer data).

As a sub-embodiment of the foregoing embodiment, the Uplink Physical layer data CHannel is a PUSCH (Physical Uplink Shared CHannel).

As a sub-embodiment of the foregoing embodiment, the uplink physical layer data channel is a short PUSCH (short PUSCH).

As a sub-embodiment of the foregoing embodiment, the uplink physical layer data channel is NR-PUSCH (new radio PUSCH).

As a sub-embodiment of the foregoing embodiment, the uplink physical layer data channel is NB-PUSCH (NarrowBand band PUSCH).

As an embodiment, the first information is transmitted on an uplink physical layer control channel (i.e. an uplink channel that can only be used for carrying physical layer signaling).

As a sub-embodiment of the foregoing embodiment, the Uplink Physical layer Control CHannel is a PUCCH (Physical Uplink Control CHannel).

As a sub-embodiment of the foregoing embodiment, the uplink physical layer control channel is sPUCCH (short PUCCH ).

As a sub-embodiment of the foregoing embodiment, the uplink physical layer control channel is an NR-PUCCH (New Radio PUCCH).

As a sub-embodiment of the foregoing embodiment, the uplink physical layer control channel is NB-PUCCH (NarrowBand band PUCCH).

As an embodiment, the first channel information is UCI.

As an embodiment, the first channel information is carried by physical layer signaling.

As an embodiment, the second channel information is UCI.

As an embodiment, the second Channel Information includes at least one of { CSI (Channel State Information), CRI (Channel State Information reference signal resource Indication) }.

As an embodiment, the second channel information is carried by physical layer signaling.

As an embodiment, the third channel information is UCI.

As an embodiment, the third channel information comprises at least one of { CSI, CRI }.

As an embodiment, the third channel information is carried by physical layer signaling.

As an embodiment, the first channel information is transmitted on an uplink physical layer data channel (i.e., an uplink channel that can be used to carry physical layer data).

As an embodiment, the first channel information is transmitted on an uplink physical layer control channel (i.e. an uplink channel that can only be used for carrying physical layer signaling).

As an embodiment, the second channel information is transmitted on an uplink physical layer data channel (i.e., an uplink channel that can be used to carry physical layer data).

As an embodiment, the second channel information is transmitted on an uplink physical layer control channel (i.e. an uplink channel that can only be used for carrying physical layer signaling).

As an embodiment, the third channel information is transmitted on an uplink physical layer data channel (i.e. an uplink channel that can be used to carry physical layer data).

As an embodiment, the third channel information is transmitted on an uplink physical layer control channel (i.e. an uplink channel that can only be used for carrying physical layer signaling).

Specifically, according to an aspect of the present application, the method is characterized by comprising the following steps:

-receiving a second reference signal.

As an embodiment, the second reference signal comprises at least one of { CSI-RS, DMRS, TRS, PTRS, PSS, SSS, PSSs, SSSs }.

As an embodiment, the second reference signal and the first reference signal are transmitted by the same antenna port.

As an embodiment, the transmit antenna port of the second reference signal and the transmit antenna port of the first reference signal are QCL (Quasi Co-Located).

As an embodiment, the first reference signals are respectively transmitted by T1 first antenna ports, the second reference signals are respectively transmitted by T1 second antenna ports, the T1 first antenna ports and the T1 second antenna ports are in one-to-one correspondence, and the T1 is a positive integer.

As a sub-embodiment of the above-mentioned embodiments, any one of the T1 first antenna ports and the corresponding second antenna port are the same.

As a sub-embodiment of the above-mentioned embodiments, any one of the T1 first antenna ports and the corresponding second antenna port are QCL.

As an embodiment, two antenna ports are QCL means: the large-scale characteristics of the channel experienced by a radio signal transmitted on one antenna port can be inferred from the large-scale characteristics (properties) of the channel experienced by a radio signal transmitted on another antenna port. The large-scale characteristics include one or more of { delay spread (delay spread), Doppler spread (Doppler spread), Doppler shift (Doppler shift), average gain (average gain), average delay (average delay), angle of arrival (angle of arrival), angle of departure (angle of departure), spatial correlation }.

As an embodiment, two antenna ports are QCL means: the two antenna ports correspond to the same analog beamforming vector.

As an embodiment, two antenna ports are QCL means: the two antenna ports correspond to the same beamforming vector.

As an embodiment, two antenna ports being of the QCL means: the user equipment may receive the wireless signals transmitted on the two antenna ports with the same beamforming vector.

As an embodiment, two antenna ports being of the QCL means: the user equipment may receive the wireless signals transmitted on the two antenna ports with the same spatial filtering.

As an embodiment, the first reference signal and the second reference signal are transmitted on the same carrier.

As one embodiment, the first reference signal is the second reference signal.

As an embodiment, an ending time of the time domain resource occupied by the second reference signal is later than an ending time of the time domain resource occupied by the first reference signal.

As an embodiment, the time domain resource occupied by the second reference signal and the time domain resource occupied by the first reference signal partially Overlap (Overlap).

As an embodiment, the time domain resources occupied by the second reference signal and the time domain resources occupied by the first reference signal are orthogonal (non-overlapping).

As one embodiment, the second reference signal is wideband.

As one embodiment, the system bandwidth is divided into a positive integer number of frequency domain regions, and the second reference signal occurs over all frequency domain regions within the system bandwidth.

As one embodiment, the second reference signal is narrowband.

As an embodiment, the system bandwidth is divided into a positive integer number of frequency domain regions, and the second reference signal only appears on a partial frequency domain region.

As an embodiment, the system bandwidth is divided into positive integer frequency domain regions, the first reference signal occurs over W1 frequency domain regions, the second reference signal occurs over W2 frequency domain regions, the W1 and the W2 are positive integers, respectively.

As a sub-implementation of the above embodiment, the W1 is equal to the W2, and the W1 frequency domain regions and the W2 frequency domain regions are overlapping.

As a sub-implementation of the above embodiment, the W1 is greater than the W2, and the W1 frequency domain regions include the W2 frequency domain regions.

As a sub-embodiment of the above embodiment, the W1 frequency domain regions and the W2 frequency domain regions partially overlap.

As one embodiment, measurements for the second reference signal are used to generate a second channel matrix.

As a sub-embodiment of the above embodiment, the second channel matrix is a channel parameter matrix between the user equipment and a sender of the second reference signal.

As a sub-embodiment of the above embodiment, the second channel matrix is a channel covariance matrix between the user equipment and a sender of the second reference signal.

-transmitting the fourth channel information;

wherein the first integer is equal to 1, the fourth channel information is used to determine K first coefficient groups, any one of the K first coefficient groups includes a positive integer number of coefficients, any one of the K first coefficient groups is a positive real number, and K is equal to the first integer.

As one embodiment, at least one of the K first coefficient groups includes L1-1 coefficients.

As one embodiment, at least one of the K first coefficient groups includes L1 coefficients.

As one embodiment, one of the K first coefficient groups includes L1-1 coefficients, and each of the other ones of the K first coefficient groups includes L1 coefficients.

As an embodiment, the fourth channel information is UCI.

As one embodiment, the fourth channel information includes CSI.

As an embodiment, the fourth channel information is carried by physical layer signaling.

As an embodiment, the fourth channel information is transmitted on an uplink physical layer data channel (i.e. an uplink channel that can be used to carry physical layer data).

As an embodiment, the fourth channel information is transmitted on an uplink physical layer control channel (i.e. an uplink channel that can only be used for carrying physical layer signaling).

As an embodiment, { the first information, the first channel information, the second channel information, and the fourth channel information } are carried by the same physical layer signaling.

As an embodiment, { the first information, the first channel information, the second channel information, the fourth channel information } are transmitted on the same physical layer channel.

As an embodiment, at least two of { the first information, the first channel information, the second channel information, the fourth channel information } are carried by different physical layer signaling.

As an embodiment, at least two of { the first information, the first channel information, the second channel information, the fourth channel information } are transmitted on different physical layer channels.

In particular, according to one aspect of the present application, it is characterized in that the measurement for the second reference signal is used to determine the K first coefficient groups.

As one embodiment, the second channel matrix is used to determine the K first coefficient groups.

As an embodiment, the K first coefficient groups respectively correspond to K first row vectors of a first reference matrix in a one-to-one manner, the first reference matrix is obtained by left-multiplying the second channel matrix by a first left matrix, and coefficients in any one of the K first coefficient groups are obtained by multiplying the corresponding first row vectors by the L1 first-type vectors, then performing modulo operation, and performing { normalization and quantization } on at least the latter.

As a sub-embodiment of the above embodiment, the first left matrix is obtained by performing SVD (singular value decomposition) on the second channel matrix.

As a sub-embodiment of the foregoing embodiment, the first left matrix is composed of K row vectors of a left matrix obtained after the second channel matrix SVD, and the K row vectors respectively correspond to K maximum eigenvalues of the second channel matrix.

As an embodiment, K is equal to L1, the K first coefficient groups respectively correspond to K second row vectors of a second reference matrix, and the second reference matrix is obtained by left-multiplying the second channel matrix by a conjugate transpose of the L1 first-type vectors, and then right-multiplying the L1 first-type vectors. Coefficients in any one of the K first coefficient sets are each derived from a modulus of elements in the corresponding second row vector by at least the latter of { normalization, quantization }.

As one embodiment, the first reference signal is the second reference signal, measurements for the first reference signal being used to determine the K first coefficient sets.

-transmitting fifth channel information;

wherein the first integer is greater than 1, the fifth channel information is used to determine K second coefficient groups, any one of the K second coefficient groups comprises a positive integer number of coefficients, any one of the K second coefficient groups is a non-negative real number, and K is equal to the first integer.

As one embodiment, at least one of the K second coefficient groups includes L2-1 coefficients.

As one embodiment, at least one of the K second coefficient groups includes L2 coefficients.

As one embodiment, one of the K second coefficient groups includes L2-1 coefficients, and each of the other ones of the K second coefficient groups includes L2 coefficients.

As an embodiment, the fifth channel information is UCI.

As an embodiment, the fifth channel information includes CSI.

As an embodiment, the fifth channel information is carried by physical layer signaling.

As an embodiment, the fifth channel information is transmitted on an uplink physical layer data channel (i.e. an uplink channel that can be used to carry physical layer data).

As an embodiment, the fifth channel information is transmitted on an uplink physical layer control channel (i.e. an uplink channel that can only be used for carrying physical layer signaling).

As an embodiment, { the first information, the third channel information, and the fifth channel information } are carried by the same physical layer signaling.

As an embodiment, the { the first information, the third channel information, the fifth channel information } are transmitted on the same physical layer channel.

As an embodiment, at least two of { the first information, the third channel information, the fifth channel information } are carried by different physical layer signaling.

As an embodiment, at least two of { the first information, the third channel information, the fifth channel information } are transmitted on different physical layer channels.

In particular, according to one aspect of the present application, it is characterized in that the measurement for the second reference signal is used to determine the K second coefficient groups.

As an embodiment, the K second coefficient sets respectively correspond to K first row vectors of the first reference matrix in a one-to-one manner, and coefficients in any one of the K second coefficient sets are obtained by multiplying the corresponding first row vectors by the L2 first-type vectors, performing modulo operation, and performing { normalization, quantization } on at least the latter.

As an embodiment, the K is equal to the L2, the K second coefficient groups respectively correspond to K third row vectors of a third reference matrix, and the third reference matrix is obtained by left-multiplying the second channel matrix by a conjugate transpose of the L2 first type vectors, and then right-multiplying the L2 first type vectors. Coefficients in any one of the K second coefficient sets are each derived from a modulus of elements in the corresponding third row vector by at least the latter of { normalization, quantization }.

As one embodiment, the first reference signal is the second reference signal, and measurements for the first reference signal are used to determine the K second coefficient sets.

Specifically, according to an aspect of the present application, any coefficient in the K first coefficient groups belongs to a first coefficient set, the first coefficient set includes a positive integer number of coefficients, and the first coefficient set does not include 0.

As one embodiment, the fourth channel information indicates an index of each coefficient in the K first coefficient groups in the first coefficient set.

Specifically, according to an aspect of the present application, any coefficient in the K second coefficient groups belongs to a second coefficient set, the second coefficient set includes a positive integer number of coefficients, and the second coefficient set includes 0.

As one embodiment, the fifth channel information indicates an index of each coefficient in the K second coefficient groups in the second coefficient set.

As an embodiment, the above method has a benefit that when feeding back the L1 first-class vectors, since the value of L1 can be flexibly selected, no 0 coefficient is needed in the first coefficient set, which avoids unnecessary feedback overhead; when feeding back the L2 first-type vectors, since the value of L2 is fixed, introducing a 0 coefficient in the second coefficient set can improve the feedback accuracy.

As an embodiment, under an LC (Linear Combination) based CSI feedback mechanism, CSI feedback includes a plurality of basis vectors and corresponding combining coefficients. The L1 first class vectors and the L2 first class vectors represent L1 basis vectors and L2 basis vectors, respectively. The method has the advantages that when the rank of the channel is 1, the user equipment is allowed to select the number of the base vectors according to the actual channel, unnecessary feedback overhead caused by fixedly feeding back a certain number of base vectors is avoided, and a coefficient 0 is not needed in the combining coefficient at the moment, so that the feedback overhead is further reduced; when the rank of the channel is greater than 1, a fixed number of basis vectors are fed back, and the combination coefficients corresponding to some basis vectors are allowed to be 0, so that the feedback accuracy can be improved, and the problem that different layers (layers) correspond to different basis vectors is solved with the minimum overhead.

As an embodiment, any coefficient in the K first coefficient groups is a positive real number.

As one embodiment, any coefficient in the K second coefficient groups is a non-negative real number.

As an embodiment, the number of coefficients comprised in the first set of coefficients and the number of coefficients comprised in the second set of coefficients are equal.

As an embodiment, the number of coefficients comprised in the first set of coefficients and the number of coefficients comprised in the second set of coefficients are not equal.

As one embodiment, the number of coefficients comprised in the first set of coefficients is greater than the number of coefficients comprised in the second set of coefficients.

As an embodiment, the second set of coefficients is equal to the union of the first set of coefficients and 0, i.e. the second set of coefficients is equal to { the first set of coefficients, 0 }.

As an embodiment, the coefficients in the first set of coefficients are all positive real numbers.

As an embodiment, the coefficients in the second set of coefficients are all non-negative real numbers.

-receiving a third reference signal;

as an embodiment, the third reference signal comprises at least one of { CSI-RS, DMRS, TRS, PTRS, PSS, SSS, PSSs, SSSs }.

As an embodiment, the third reference signal and the second reference signal are transmitted by the same antenna port.

As an embodiment, the transmit antenna port of the third reference signal and the transmit antenna port of the second reference signal are QCL (Quasi Co-Located).

As an embodiment, the second reference signals are respectively transmitted by T1 second antenna ports, the third reference signals are respectively transmitted by T1 third antenna ports, the T1 second antenna ports are in one-to-one correspondence with the T1 third antenna ports, and T1 is a positive integer.

As a sub-embodiment of the above-mentioned embodiments, any one of the T1 second antenna ports is the same as the corresponding third antenna port.

As a sub-embodiment of the above-mentioned embodiments, any one of the T1 second antenna ports and the corresponding third antenna port are QCL.

As an embodiment, the first reference signal, the second reference signal and the third reference signal are transmitted on a same carrier.

As one embodiment, the third reference signal is the second reference signal.

As an embodiment, an ending time of the time domain resource occupied by the third reference signal is later than an ending time of the time domain resource occupied by the second reference signal.

As an embodiment, the time domain resource occupied by the third reference signal and the time domain resource occupied by the second reference signal partially Overlap (Overlap).

As an embodiment, the time domain resources occupied by the third reference signal and the time domain resources occupied by the second reference signal are orthogonal (non-overlapping).

As one embodiment, the third reference signal is wideband.

As one embodiment, the third reference signal is narrowband.

As an embodiment, the system bandwidth is divided into positive integer frequency domain regions, the third reference signal occurs over W3 frequency domain regions, the second reference signal occurs over W2 frequency domain regions, the W3 and the W2 are positive integers, respectively.

As a sub-implementation of the above embodiment, the W3 is equal to the W2, and the W3 frequency domain regions and the W2 frequency domain regions are overlapping.

As a sub-implementation of the above embodiment, the W2 is greater than the W3, and the W2 frequency domain regions include the W3 frequency domain regions.

As a sub-embodiment of the above embodiment, the W3 frequency domain regions and the W2 frequency domain regions partially overlap.

As one embodiment, measurements for the third reference signal are used to generate a third channel matrix.

As a sub-embodiment of the above embodiment, the third channel matrix is a channel parameter matrix between the user equipment and a sender of the third reference signal.

As a sub-embodiment of the above embodiment, the third channel matrix is a channel covariance matrix between the user equipment and a sender of the third reference signal.

-transmitting sixth channel information;

wherein the first integer is equal to 1, the sixth channel information is used to determine K third coefficient sets, any one of the K third coefficient sets includes positive integer coefficients, and any one of the K third coefficient sets is a complex number.

As an embodiment, under an LC (Linear Combination) based CSI feedback mechanism, CSI feedback includes a plurality of basis vectors and corresponding combining coefficients. The L1 first-type vectors represent L1 basis vectors, the K first coefficient sets represent amplitudes in K combined coefficients corresponding to the L1 basis vectors, and the K third coefficient sets represent phases in K combined coefficients corresponding to the L1 basis vectors, wherein the K combined coefficients respectively correspond to K layers (layers).

As an embodiment, at least one third coefficient group in the K third coefficient groups includes L1-1 coefficients.

As an embodiment, at least one third coefficient group in the K third coefficient groups includes L1 coefficients.

As an embodiment, one of the K third coefficient sets includes L1-1 coefficients, and each of the other ones of the K third coefficient sets includes L1 coefficients.

As one embodiment, the K third coefficient groups and the K first coefficient groups have a one-to-one correspondence, and any one of the K third coefficient groups includes a number of coefficients equal to a number of coefficients included in the corresponding first coefficient group.

As an embodiment, the sixth channel information is UCI.

As an embodiment, the sixth channel information includes CSI.

As an embodiment, the sixth channel information is carried by physical layer signaling.

As an embodiment, the sixth channel information is transmitted on an uplink physical layer data channel (i.e. an uplink channel that can be used to carry physical layer data).

As an embodiment, the sixth channel information is transmitted on an uplink physical layer control channel (i.e. an uplink channel that can only be used for carrying physical layer signaling).

As an embodiment, the { the first information, the first channel information, the second channel information, the fourth channel information, the sixth channel information } is carried by the same physical layer signaling.

As an embodiment, { the first information, the first channel information, the second channel information, the fourth channel information, and the sixth channel information } are transmitted on the same physical layer channel.

As an embodiment, at least two of { the first information, the first channel information, the second channel information, the fourth channel information, the sixth channel information } are carried by different physical layer signaling.

As an embodiment, at least two of { the first information, the first channel information, the second channel information, the fourth channel information, the sixth channel information } are transmitted on different physical layer channels.

As an embodiment, any coefficient in the K third coefficient sets is a complex number modulo 1.

As an embodiment, the modulus of at least two coefficients in the K third coefficient sets are not equal.

As an embodiment, any coefficient of the K sets of third coefficients belongs to a third set of coefficients, the third set of coefficients comprising a positive integer number of coefficients.

As an embodiment, any coefficient in the third set of coefficients is a complex number.

As an embodiment, any coefficient in the third set of coefficients is a complex number modulo 1.

As an embodiment, the modes of at least two coefficients present in said third set of coefficients are unequal.

As one embodiment, the sixth channel information indicates an index of each coefficient in the K third coefficient sets.

As an embodiment, the sixth channel information and the fourth channel information are the same channel information.

As one embodiment, the K first coefficient groups and the K third coefficient groups are determined by the same channel information.

As an embodiment, Reference resources (Reference resources) corresponding to the first information in the frequency domain, Reference resources corresponding to the first channel information in the frequency domain, Reference resources corresponding to the second channel information in the frequency domain, Reference resources corresponding to the fourth channel information in the frequency domain, and Reference resources corresponding to the sixth channel information in the frequency domain are all system bandwidths (of the carrier occupied by the first Reference signal).

As an embodiment, the reference resource corresponding to the first information in the frequency domain, the reference resource corresponding to the first channel information in the frequency domain, the reference resource corresponding to the second channel information in the frequency domain, and the reference resource corresponding to the fourth channel information in the frequency domain are all system bandwidths (of the carrier occupied by the first reference signal), and the reference resource corresponding to the sixth channel information in the frequency domain is a part of the system bandwidth.

As an embodiment, the reference resource corresponding to the first information in the frequency domain, the reference resource corresponding to the first channel information in the frequency domain, and the reference resource corresponding to the second channel information in the frequency domain are both the system bandwidth (of the carrier occupied by the first reference signal), and the reference resource corresponding to the fourth channel information in the frequency domain and the reference resource corresponding to the sixth channel information in the frequency domain are a part of the system bandwidth.

In particular, according to one aspect of the present application, it is characterized in that measurements on the third reference signal are used for determining the K third coefficient sets.

For one embodiment, the third channel matrix is used to determine the K third coefficient sets.

As an embodiment, the K third coefficient sets respectively correspond to K fourth row vectors of a fourth reference matrix in a one-to-one manner, the fourth reference matrix is obtained by left-multiplying the third channel matrix by the second left matrix, and a product of multiplication of the corresponding fourth row vector and the L1 first-type vectors, of a coefficient in any one of the K third coefficient sets, is obtained by normalization and quantization.

As a sub-embodiment of the above embodiment, the second left matrix is obtained by performing SVD on the third channel matrix.

As a sub-embodiment of the foregoing embodiment, the second left matrix is composed of K row vectors in a left matrix obtained after the third channel matrix SVD, and the K row vectors respectively correspond to K maximum eigenvalues of the third channel matrix.

As an embodiment, the K is equal to the L1, the K third coefficient sets respectively correspond to K fifth row vectors of a fifth reference matrix one-to-one, and the fifth reference matrix is obtained by left-multiplying the third channel matrix by a conjugate transpose of the L1 first-type vectors, and then right-multiplying the L1 first-type vectors. And the coefficients in any one of the K third coefficient groups are respectively obtained by normalizing and quantizing the elements in the corresponding fifth row vector.

As an embodiment, the third reference signal is the second reference signal, measurements for the second reference signal are used to determine the K third coefficient sets.

As an embodiment, the third reference signal is the first reference signal, measurements for the first reference signal are used to determine the K third coefficient sets.

-transmitting seventh channel information;

wherein the first integer is greater than 1, the seventh channel information is used to determine K fourth coefficient groups, any one of the K fourth coefficient groups comprising a positive integer number of coefficients, any one of the K fourth coefficient groups being a complex number.

As an embodiment, under an LC (Linear Combination) based CSI feedback mechanism, CSI feedback includes a plurality of basis vectors and corresponding combining coefficients. The L2 first-type vectors represent L2 basis vectors, the K second coefficient sets represent magnitudes in K combined coefficients corresponding to the L2 basis vectors, and the K fourth coefficient sets represent phases in K combined coefficients corresponding to the L2 basis vectors, wherein the K combined coefficients respectively correspond to K layers (layers).

As one embodiment, at least one fourth coefficient group among the K fourth coefficient groups includes L2-1 coefficients.

As one embodiment, at least one fourth coefficient group among the K fourth coefficient groups includes L2 coefficients.

As one embodiment, one of the K fourth coefficient groups includes L2-1 coefficients, and each of the other ones of the K fourth coefficient groups includes L2 coefficients.

As one embodiment, the K fourth coefficient groups and the K second coefficient groups have one-to-one correspondence, and any one of the K fourth coefficient groups includes a number of coefficients equal to a number of coefficients included in the corresponding second coefficient group.

As an embodiment, the seventh channel information is UCI.

As one embodiment, the seventh channel information includes CSI.

As an embodiment, the seventh channel information is carried by physical layer signaling.

As an embodiment, the seventh channel information is transmitted on an uplink physical layer data channel (i.e. an uplink channel that can be used to carry physical layer data).

As an embodiment, the seventh channel information is transmitted on an uplink physical layer control channel (i.e. an uplink channel that can only be used for carrying physical layer signaling).

As an embodiment, the { the first information, the third channel information, the fifth channel information, the seventh channel information } are carried by the same physical layer signaling.

As an embodiment, { the first information, the third channel information, the fifth channel information, and the seventh channel information } are transmitted on the same physical layer channel.

As an embodiment, at least two of { the first information, the third channel information, the fifth channel information, the seventh channel information } are carried by different physical layer signaling.

As an embodiment, at least two of { the first information, the third channel information, the fifth channel information, the seventh channel information } are transmitted on different physical layer channels.

As an embodiment, any coefficient in the K fourth coefficient groups is a complex number modulo 1.

In one embodiment, the modulus of at least two coefficients in the K fourth coefficient groups is unequal.

As an embodiment, any coefficient of the K fourth coefficient groups belongs to the third coefficient set.

As one embodiment, the seventh channel information indicates an index of each coefficient in the K fourth coefficient groups in the third coefficient set.

As an embodiment, the seventh channel information and the fifth channel information are the same channel information.

As one embodiment, the K second coefficient groups and the K fourth coefficient groups are determined by the same channel information.

As an embodiment, Reference resources (Reference resources) corresponding to the first information in the frequency domain, Reference resources corresponding to the third channel information in the frequency domain, Reference resources corresponding to the fifth channel information in the frequency domain, and Reference resources corresponding to the seventh channel information in the frequency domain are all system bandwidths (of the carrier occupied by the first Reference signal).

As an embodiment, the reference resource corresponding to the first information in the frequency domain, the reference resource corresponding to the third channel information in the frequency domain, and the reference resource corresponding to the fifth channel information in the frequency domain are all system bandwidths (of the carrier occupied by the first reference signal), and the reference resource corresponding to the seventh channel information in the frequency domain is a part of the system bandwidth.

As an embodiment, the reference resource corresponding to the first information in the frequency domain and the reference resource corresponding to the third channel information in the frequency domain are both system bandwidths (of the carrier occupied by the first reference signal), and the reference resource corresponding to the fifth channel information in the frequency domain and the reference resource corresponding to the seventh channel information in the frequency domain are both part of the system bandwidths.

In particular, according to one aspect of the present application, it is characterized in that the measurement for the third reference signal is used to determine the K fourth coefficient groups.

As an embodiment, the third channel matrix is used to determine the K fourth coefficient groups.

As an embodiment, the K fourth coefficient groups respectively correspond to K fourth row vectors of the fourth reference matrix in a one-to-one manner, and a coefficient in any one of the K fourth coefficient groups is obtained by normalizing and quantizing a product obtained by multiplying the corresponding fourth row vector by the L2 first-type vectors respectively.

As an embodiment, K is equal to L2, the K fourth coefficient groups respectively correspond to K sixth row vectors of a sixth reference matrix, and the sixth reference matrix is obtained by left-multiplying the third channel matrix by a conjugate transpose of the L2 first-type vectors, and then right-multiplying the L2 first-type vectors. And the coefficients in any one of the K fourth coefficient groups are respectively obtained by normalizing and quantizing the elements in the corresponding sixth row vector.

As an embodiment, the third reference signal is the second reference signal, measurements on the second reference signal being used to determine the K fourth coefficient groups.

As an embodiment, the third reference signal is the first reference signal, measurements on the first reference signal being used to determine the K fourth coefficient sets.

Specifically, according to one aspect of the application, the method is characterized by comprising the following steps:

-receiving a first signaling;

as an embodiment, the first signaling is used to determine the L2.

As an embodiment, the first signaling is used to determine at least one of { the L2, the first set of coefficients, the second set of coefficients }.

As one embodiment, the first signaling is used to determine the first set of vectors.

As an embodiment, the first signaling is used to determine the third set of coefficients.

As an embodiment, the first signaling is higher layer signaling.

As an embodiment, the first signaling is RRC (Radio Resource Control) signaling.

As an embodiment, the first signaling is mac ce (Medium Access Control layer Control Element) signaling.

As an embodiment, the first signaling is transmitted on a downlink physical layer data channel (i.e. a downlink channel that can be used to carry physical layer data).

As a sub-embodiment of the foregoing embodiment, the Downlink Physical layer data CHannel is a PDSCH (Physical Downlink Shared CHannel).

As a sub-embodiment of the foregoing embodiment, the downlink physical layer data channel is sPDSCH (short PDSCH).

As a sub-embodiment of the above embodiment, the downlink physical layer data channel is NR-PDSCH (new radio PDSCH).

As a sub-embodiment of the above embodiment, the downlink physical layer data channel is NB-PDSCH (NarrowBand band PDSCH).

As an embodiment, the first signaling is physical layer signaling.

As an embodiment, the first signaling is transmitted on a downlink physical layer control channel (i.e. a downlink channel that can only be used to carry physical layer signaling).

As a sub-embodiment of the foregoing embodiment, the downlink Physical layer control CHannel is a PDCCH (Physical downlink control CHannel).

As a sub-embodiment of the foregoing embodiment, the downlink physical layer control channel is an sPDCCH (short PDCCH).

As a sub-embodiment of the foregoing embodiment, the downlink physical layer control channel is an NR-PDCCH (New Radio PDCCH).

As a sub-embodiment of the foregoing embodiment, the downlink physical layer control channel is an NB-PDCCH (narrow band PDCCH).

-receiving a first wireless signal;

wherein K second class vectors are used to generate the first wireless signal.

As an embodiment, the K vectors of the second class are used to determine a precoding matrix corresponding to the first wireless signal.

As an embodiment, the column vectors in the precoding matrix corresponding to the first wireless signal include part or all of the K second-class vectors.

As an embodiment, the first integer is equal to 1, { the L1 first-type vectors, the K first coefficient sets, the K third coefficient sets } is used to determine the K second-type vectors.

As an embodiment, the first integer is equal to 1, and the L1 first-type vectors and the K first coefficient groups are used to determine the K second-type vectors.

As an embodiment, the first integer is equal to 1, the L1 vectors of the first type and the K third coefficient sets } are used to determine the K vectors of the second type.

As an embodiment, the K first coefficient groups and the K third coefficient groups are in one-to-one correspondence, the K first coefficient groups and the K second-type vectors are in one-to-one correspondence, the target second-type vector is any one of the K second-type vectors, and the target first coefficient group and the target third coefficient group are respectively a first coefficient group and a third coefficient group to which the target second-type vector corresponds.

As a sub-implementation of the above embodiment, the target first coefficient group and the target third coefficient group respectively include L1 first coefficients and L1 third coefficients, and the L1 first coefficients and the L1 third coefficients respectively correspond to the L1 first class vectors in a one-to-one manner. The target second-type vector is equal to the sum of the L1 first-type vectors weighted by the corresponding first coefficient and the corresponding third coefficient, respectively.

As a sub-implementation of the above embodiment, the target first coefficient group includes L1 first coefficients, and the L1 first coefficients and the L1 first class vectors have a one-to-one correspondence. The target second-type vector is equal to the sum of the L1 first-type vectors weighted by the corresponding first coefficients.

As a sub-implementation of the foregoing embodiment, the target third coefficient set includes L1 third coefficients, and the L1 third coefficients and the L1 first-class vectors are in one-to-one correspondence. The target second-type vector is equal to the sum of the L1 first-type vectors weighted by the corresponding third coefficients, respectively.

As a sub-implementation of the foregoing embodiment, the target first coefficient group and the target third coefficient group respectively include L1-1 first coefficients and L1-1 third coefficients, and the L1-1 first coefficients and the L1-1 third coefficients respectively correspond to last L1-1 first-type vectors in the L1 first-type vectors in a one-to-one manner. The target second-type vector is equal to the sum of the last L1-1 of the L1 first-type vectors weighted by the corresponding first coefficient and the corresponding third coefficient, respectively, plus the first-type vector of the L1 first-type vectors.

As a sub-implementation of the above embodiment, the target first coefficient group includes L1-1 first coefficients, and the L1-1 first coefficients and the last L1-1 first-type vectors in the L1 first-type vectors have a one-to-one correspondence. The target second-type vector is equal to the sum of the last L1-1 first-type vectors of the L1 first-type vectors, weighted by the corresponding first coefficients, respectively, plus the first-type vector of the L1 first-type vectors.

As a sub-implementation of the above embodiment, the target third coefficient set includes L1-1 third coefficients, and the L1-1 third coefficients correspond to last L1-1 first-type vectors in the L1 first-type vectors in a one-to-one manner. The target second-type vector is equal to the sum of the last L1-1 first-type vectors of the L1 first-type vectors, weighted by the corresponding third coefficients, respectively, plus the first-type vector of the L1 first-type vectors.

As an embodiment, the first integer is larger than 1, { the L2 first-type vectors, the K second coefficient sets, the K fourth coefficient sets } is used to determine the K second-type vectors.

As an embodiment, the first integer is greater than 1, and the L2 first-type vectors and the K second coefficient groups are used to determine the K second-type vectors.

As an embodiment, the first integer is greater than 1, and the L2 first-class vectors and the K fourth coefficient groups are used to determine the K second-class vectors.

As an embodiment, the K second coefficient groups and the K fourth coefficient groups are in one-to-one correspondence, the K second coefficient groups and the K second-type vectors are in one-to-one correspondence, the target second-type vector is any one of the K second-type vectors, and the target second coefficient group and the target fourth coefficient group are respectively the second coefficient group and the fourth coefficient group to which the target second-type vector corresponds.

As a sub-implementation of the foregoing embodiment, the target second coefficient group and the target fourth coefficient group respectively include L2 second coefficients and L2 fourth coefficients, and the L2 second coefficients and the L2 fourth coefficients respectively correspond to the L2 first-class vectors in a one-to-one manner. The target second-type vector is equal to the sum of the L2 first-type vectors weighted by the corresponding second coefficient and the corresponding fourth coefficient, respectively.

As a sub-implementation of the foregoing embodiment, the target second coefficient group includes L2 second coefficients, and the L2 second coefficients and the L2 first class vectors have a one-to-one correspondence. The target second-type vector is equal to the sum of the L2 first-type vectors weighted by the corresponding second coefficients, respectively.

As a sub-implementation of the foregoing embodiment, the target fourth coefficient group includes L2 fourth coefficients, and the L2 fourth coefficients and the L2 first class vectors have a one-to-one correspondence. The target second-type vector is equal to the sum of the L2 first-type vectors weighted by the corresponding fourth coefficients, respectively.

As a sub-implementation of the foregoing embodiment, the target second coefficient group and the target fourth coefficient group respectively include L2-1 second coefficients and L2-1 fourth coefficients, and the L2-1 second coefficients and the L2-1 fourth coefficients respectively correspond to last L2-1 first-type vectors in the L2 first-type vectors in a one-to-one manner. The target second-class vector is equal to the sum of the last L2-1 of the L2 first-class vectors weighted by the corresponding second coefficient and the corresponding fourth coefficient, respectively, plus the first-class vector of the L2 first-class vectors.

As a sub-implementation of the above embodiment, the target second coefficient group includes L2-1 second coefficients, and the L2-1 second coefficients are in one-to-one correspondence with last L2-1 first-type vectors of the L2 first-type vectors. The target second-type vector is equal to the sum of the last L2-1 first-type vectors of the L2 first-type vectors, weighted by the corresponding second coefficients, respectively, plus the first-type vector of the L2 first-type vectors.

As a sub-implementation of the above embodiment, the target fourth coefficient group includes L2-1 fourth coefficients, and the L2-1 fourth coefficients correspond to last L2-1 first-type vectors in the L2 first-type vectors in a one-to-one manner. The target second-type vector is equal to the sum of the last L2-1 first-type vectors of the L2 first-type vectors, weighted by the corresponding fourth coefficients, respectively, plus the first-type vector of the L2 first-type vectors.

For one embodiment, the first wireless signal includes physical layer data.

As an embodiment, the first wireless signal is transmitted on a downlink physical layer data channel (i.e., a downlink channel that can be used to carry physical layer data).

As a sub-embodiment of the above-mentioned embodiment, the downlink physical layer data channel is a PDSCH.

As a sub-embodiment of the above embodiment, the downlink physical layer data channel is sPDSCH.

As a sub-embodiment of the above embodiment, the downlink physical layer data channel is NR-PDSCH.

As a sub-embodiment of the above embodiment, the downlink physical layer data channel is an NB-PDSCH.

The application discloses a method in a base station used for wireless communication, characterized by comprising:

-transmitting a first reference signal;

-receiving first information, the first information being used for determining a first integer;

-receiving first channel information and second channel information if said first integer is equal to 1; otherwise, receiving third channel information;

As an example, the value of L1 is variable.

As one embodiment, the target recipient of the first reference signal determines the value of L1 on its own from the measurements for the first reference signal.

As an example, the value of L2 is preset.

-transmitting a second reference signal;

-receiving fourth channel information;

-receiving fifth channel information;

-transmitting a third reference signal;

-receiving sixth channel information;

-receiving seventh channel information;

-transmitting the first signaling.

As an embodiment, the first signaling is used to determine the L2.

-transmitting a first wireless signal;

wherein K second class vectors are used to generate the first wireless signal.

As an embodiment, the first integer is equal to 1, and the L1 first-type vectors and the K third coefficient sets are used to determine the K second-type vectors.

The application discloses a user equipment used for wireless communication, which is characterized by comprising:

a first receiving module, which receives a first reference signal;

a first transmitting module that transmits first information, the first information being used to determine a first integer; if the first integer is equal to 1, the first sending module also sends first channel information and second channel information; otherwise, the first sending module also sends third channel information;

As an embodiment, the user equipment used for wireless communication is characterized in that the first receiving module further receives a second reference signal.

As an embodiment, the user equipment used for wireless communication is characterized in that the first integer is equal to 1, and the first sending module further sends fourth channel information. Wherein the fourth channel information is used to determine K first coefficient groups, any one of the K first coefficient groups comprising a positive integer number of coefficients, any one of the K first coefficient groups being a positive real number; the K is equal to the first integer.

As an embodiment, the user equipment used for wireless communication described above is characterized in that measurements on the second reference signal are used to determine the K first coefficient groups.

As an embodiment, the user equipment used for wireless communication is characterized in that the first integer is greater than 1, and the first sending module sends the fifth channel information. Wherein the fifth channel information is used to determine K second coefficient groups; any one of the K second coefficient groups comprises a positive integer number of coefficients; any coefficient in the K second coefficient groups is a non-negative real number; the K is equal to the first integer.

As an embodiment, the user equipment used for wireless communication described above is characterized in that measurements on the second reference signal are used to determine the K second coefficient groups.

As an embodiment, the above user equipment for wireless communication is characterized in that any coefficient of the K first coefficient groups belongs to a first coefficient set, the first coefficient set includes a positive integer number of coefficients, and the first coefficient set does not include 0.

As an embodiment, the user equipment used for wireless communication described above is characterized in that any coefficient of the K second coefficient groups belongs to a second coefficient set, the second coefficient set comprising a positive integer number of coefficients, the second coefficient set comprising 0.

As an embodiment, the user equipment used for wireless communication is characterized in that the first receiving module further receives a third reference signal.

As an embodiment, the user equipment used for wireless communication is characterized in that the first integer is equal to 1, and the first sending module further sends sixth channel information. Wherein the sixth channel information is used to determine K third coefficient sets, any one of the K third coefficient sets comprising positive integer coefficients, any one of the K third coefficient sets being a complex number.

As an embodiment, the above user equipment for wireless communication is characterized in that measurements for the third reference signal are used to determine the K third coefficient sets.

As an embodiment, the user equipment used for wireless communication is characterized in that the first integer is greater than 1, and the first sending module further sends seventh channel information. Wherein the seventh channel information is used to determine K fourth coefficient groups, any one of the K fourth coefficient groups comprising a positive integer number of coefficients, any one of the K fourth coefficient groups being a complex number.

As an embodiment, the user equipment used for wireless communication described above is characterized in that measurements on the third reference signal are used to determine the K fourth coefficient groups.

As an embodiment, the above user equipment for wireless communication is characterized in that the first receiving module further receives a first signaling.

As an embodiment, the above user equipment for wireless communication is characterized in that the first signaling is used for determining the L2.

As an embodiment, the above user equipment for wireless communication is characterized in that the first signaling is used to determine at least one of { the L2, the first coefficient set, the second coefficient set }.

As an embodiment, the above user equipment for wireless communication is characterized in that the first receiving module further receives a first wireless signal. Wherein K second class vectors are used to generate the first wireless signal.

As an embodiment, the user equipment used for wireless communication described above is characterized in that the first integer is equal to 1, { the L1 first-type vectors, the K first coefficient sets, the K third coefficient sets } are used to determine the K second-type vectors.

As an embodiment, the above user equipment for wireless communication is characterized in that the first integer is equal to 1, and the L1 first-type vectors and the K first coefficient groups are used to determine the K second-type vectors.

As an embodiment, the above user equipment for wireless communication is characterized in that the first integer is equal to 1, and the L1 first-class vectors and the K third coefficient sets are used to determine the K second-class vectors.

As an embodiment, the user equipment used for wireless communication described above is characterized in that the first integer is greater than 1, { the L2 first-type vectors, the K second coefficient groups, the K fourth coefficient groups } is used to determine the K second-type vectors.

As an embodiment, the user equipment used for wireless communication as described above is characterized in that the first integer is greater than 1, and the L2 first-type vectors and the K second coefficient groups are used to determine the K second-type vectors.

As an embodiment, the user equipment used for wireless communication as described above is characterized in that the first integer is greater than 1, and the L2 first-type vectors and the K fourth coefficient groups are used to determine the K second-type vectors.

The application discloses a base station device used for wireless communication, which is characterized by comprising:

the second sending module is used for sending the first reference signal;

a second receiving module that receives first information, the first information being used to determine a first integer; if the first integer is equal to 1, the second receiving module also receives first channel information and second channel information; otherwise, the second receiving module also receives third channel information;

As an embodiment, the base station apparatus used for wireless communication described above is characterized in that the second transmission module further transmits a second reference signal.

As an embodiment, the above base station device used for wireless communication is characterized in that the first integer is equal to 1, and the second receiving module further receives fourth channel information. Wherein the fourth channel information is used to determine K first coefficient groups, any one of the K first coefficient groups comprising a positive integer number of coefficients, any one of the K first coefficient groups being a positive real number, the K being equal to the first integer.

As an embodiment, the above-mentioned base station apparatus for wireless communication is characterized in that the measurement for the second reference signal is used to determine the K first coefficient groups.

As an embodiment, the base station device used for wireless communication is characterized in that the first integer is greater than 1, and the second receiving module further receives fifth channel information. Wherein the fifth channel information is used to determine K second coefficient groups, any one of the K second coefficient groups comprising a positive integer number of coefficients, any one of the K second coefficient groups being a non-negative real number, the K being equal to the first integer.

As an embodiment, the above-mentioned base station apparatus for wireless communication is characterized in that the measurement for the second reference signal is used to determine the K second coefficient groups.

As an embodiment, the above-mentioned base station apparatus for wireless communication is characterized in that any coefficient of the K first coefficient groups belongs to a first coefficient set, the first coefficient set includes a positive integer number of coefficients, and the first coefficient set does not include 0.

As an embodiment, the above-mentioned base station apparatus for wireless communication is characterized in that any coefficient of the K second coefficient groups belongs to a second coefficient set, the second coefficient set includes a positive integer number of coefficients, and the second coefficient set includes 0.

As an embodiment, the base station apparatus used for wireless communication described above is characterized in that the second transmission module further transmits a third reference signal.

As an embodiment, the above base station device used for wireless communication is characterized in that the first integer is equal to 1, and the second receiving module further receives sixth channel information. Wherein the sixth channel information is used to determine K third coefficient sets, any one of the K third coefficient sets comprising positive integer coefficients, any one of the K third coefficient sets being a complex number.

As an embodiment, the above base station apparatus for wireless communication is characterized in that the measurement for the third reference signal is used to determine the K third coefficient sets.

As an embodiment, the base station device used for wireless communication is characterized in that the first integer is greater than 1, and the second receiving module further receives seventh channel information. Wherein the seventh channel information is used to determine K fourth coefficient groups, any one of the K fourth coefficient groups comprising a positive integer number of coefficients, any one of the K fourth coefficient groups being a complex number.

As an embodiment, the above-mentioned base station apparatus for wireless communication is characterized in that the measurement for the third reference signal is used to determine the K fourth coefficient groups.

As an embodiment, the above base station apparatus for wireless communication is characterized in that the second sending module further sends the first signaling.

As an embodiment, the above base station apparatus for wireless communication is characterized in that the first signaling is used to determine the L2.

As an embodiment, the above-mentioned base station apparatus for wireless communication is characterized in that the first signaling is used to determine at least one of { the L2, the first coefficient set, the second coefficient set }.

As an embodiment, the above base station apparatus for wireless communication is characterized in that the second transmission module further transmits a first wireless signal, wherein K second-class vectors are used to generate the first wireless signal.

As an embodiment, the above-mentioned base station apparatus for wireless communication is characterized in that the first integer is equal to 1, { the L1 first-type vectors, the K first coefficient groups, the K third coefficient groups } are used to determine the K second-type vectors.

As an embodiment, the above-mentioned base station apparatus for wireless communication is characterized in that the first integer is equal to 1, and the L1 first-type vectors and the K first coefficient groups are used to determine the K second-type vectors.

As an embodiment, the above base station apparatus for wireless communication is characterized in that the first integer is equal to 1, and the L1 first-class vectors and the K third coefficient sets are used to determine the K second-class vectors.

As an embodiment, the above-described base station apparatus for wireless communication is characterized in that the first integer is larger than 1, { the L2 first-type vectors, the K second coefficient groups, the K fourth coefficient groups } is used to determine the K second-type vectors.

As an embodiment, the above-mentioned base station apparatus for wireless communication is characterized in that the first integer is greater than 1, and the L2 first-type vectors and the K second coefficient groups are used to determine the K second-type vectors.

As an embodiment, the above-mentioned base station apparatus for wireless communication is characterized in that the first integer is greater than 1, and the L2 first-type vectors and the K fourth coefficient groups are used to determine the K second-type vectors.

As an example, compared with the conventional scheme, the method has the following advantages:

allow different CSI feedback mechanisms to be employed for channels of different ranks, including different feedback content and feedback overhead. Therefore, CSI feedback can be optimized fully according to the actual channel state, the feedback precision is improved, and the feedback overhead is reduced.

When the number of vectors fed back is variable, 0 coefficients are excluded from the corresponding coefficients, which avoids unnecessary feedback overhead; when a fixed number of vectors are fed back, a coefficient 0 is introduced into the corresponding coefficient, so that the feedback precision is improved.

Under an LC (Linear Combination) based CSI feedback mechanism, the CSI feedback comprises a plurality of basis vectors and corresponding combining coefficients. According to the method in the application, when the rank of the channel is 1, the UE is allowed to select the number of the basis vectors according to the actual channel, unnecessary feedback overhead caused by fixedly feeding back a certain number of basis vectors is avoided, and a coefficient 0 is not needed in the combination coefficient at the moment, so that the feedback overhead is further reduced; when the rank of the channel is greater than 1, a fixed number of basis vectors are fed back, and the combination coefficients corresponding to some basis vectors are allowed to be 0, so that the feedback accuracy can be improved, and the problem that different layers (layers) correspond to different basis vectors is solved with the minimum overhead.

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 with reference to the accompanying drawings in which:

fig. 1 shows a flow diagram of a first reference signal, first information, first channel information, second channel information, and third channel information according to an embodiment of the 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 an embodiment of a radio protocol architecture for the user plane and the control plane according to an embodiment of the present application;

figure 4 shows a schematic diagram of an evolved node and a UE according to an embodiment of the present application;

FIG. 5 shows a flow diagram of wireless transmission according to one embodiment of the present application;

FIG. 6 shows a flow diagram of wireless transmission according to another embodiment of the present application;

fig. 7 shows a flow chart of deciding to transmit { first channel information, second channel information, fourth channel information, sixth channel information } or { third channel information, fifth channel information, seventh channel information } according to an embodiment of the present application;

fig. 8 shows a schematic diagram of resource mapping of first, second and third reference signals on a time-frequency domain according to an embodiment of the present application;

fig. 9 shows a schematic diagram of resource mapping of first, second and third reference signals on a time-frequency domain according to another embodiment of the present application;

fig. 10 shows a schematic diagram of resource mapping of first, second and third reference signals on a time-frequency domain according to another embodiment of the present application;

fig. 11 is a diagram illustrating a timing relationship of first information, first channel information, second channel information, fourth channel information, and sixth channel information in a time domain according to an embodiment of the present application;

fig. 12 is a diagram illustrating a timing relationship of first information, first channel information, second channel information, fourth channel information, and sixth channel information in a time domain according to an embodiment of the present application;

fig. 13 is a diagram illustrating a timing relationship of first information, first channel information, second channel information, fourth channel information, and sixth channel information in a time domain according to an embodiment of the present application;

fig. 14 is a diagram illustrating a timing relationship of first information, first channel information, second channel information, fourth channel information, and sixth channel information in a time domain according to an embodiment of the present application;

FIG. 15 is a diagram illustrating a timing relationship of first information, third channel information, fifth channel information, and seventh channel information in a time domain according to an embodiment of the application;

FIG. 16 is a diagram illustrating a timing relationship of first information, third channel information, fifth channel information, and seventh channel information in a time domain according to an embodiment of the application;

fig. 17 is a diagram illustrating a timing relationship of first information, third channel information, fifth channel information, and seventh channel information in a time domain according to an embodiment of the present application;

FIG. 18 shows a block diagram of a processing device for use in a user equipment according to an embodiment of the present application;

fig. 19 shows a block diagram of a processing device for use in a base station according to an embodiment of the present application.

Example 1

Embodiment 1 illustrates a flowchart of a first reference signal, first information, first channel information, second channel information, and third channel information, as shown in fig. 1.

In embodiment 1, the ue in this application first receives a first reference signal and then transmits first information, where the first information is used to determine a first integer. If the first integer is equal to 1, the user equipment sends first channel information and second channel information; otherwise, the user equipment sends third channel information. Wherein the first integer is greater than 0, measurements for the first reference signal are used to determine the first integer, the second channel information is used to determine L1 first class vectors, the first channel information is used to determine the L1, the third channel information is used to determine L2 first class vectors, the L1 and the L2 are positive integers, respectively, and the L1 is not greater than the L2.

As a sub-embodiment, the value of L1 is variable.

As a sub-embodiment, the user equipment determines the value of L1 by itself from measurements for the first reference signal.

As a sub-embodiment, the L1 is equal to the L2.

As a sub-embodiment, the L1 is smaller than the L2.

As a sub-embodiment, the value of L2 is predetermined.

As a sub-embodiment, the value of L2 is configured in advance by higher layer signaling.

As a sub-embodiment, the L2 is equal to 4.

As a sub-embodiment, the L2 is equal to 3.

As a sub-embodiment, the L2 is equal to 2.

As a sub-embodiment, measurements for the first reference signal are used to generate a first channel matrix, the first integer being a rank (rank) of the first channel matrix.

As an additional embodiment of the sub-embodiments, the first channel matrix is a channel parameter matrix between the user equipment and a sender of the first reference signal.

As an additional embodiment of the sub-embodiments above, the first channel matrix is a channel covariance matrix between the user equipment and the sender of the first reference signal.

As a sub-embodiment, the user equipment performs channel estimation for the first reference signal to determine the first integer.

As a sub-embodiment, the user equipment performs channel estimation for the first reference signal to determine the first channel matrix.

As a sub-embodiment, the first integer is a positive integer no greater than 8.

As a sub-embodiment, the first integer is equal to 1.

As a sub-embodiment, the first integer is equal to 2.

As a sub-embodiment, the first information explicitly indicates the first integer.

As a sub-embodiment, the first information implicitly indicates the first integer.

As a sub-embodiment, the L1 first-type vectors are column vectors.

As a sub-embodiment, the L2 first-type vectors are column vectors.

As a sub-embodiment, measurements for the first reference signal are used to determine { the L1, the L1 first class vectors }.

As a sub-embodiment, the L1 first-type vectors are quantized from the first channel matrix.

As a sub-embodiment, any of the L1 first-type vectors belongs to a first set of vectors, the first set of vectors including a positive integer number of vectors.

As a sub-embodiment, a modulus (norm) of a product of any vector in the first vector set that does not belong to the L1 first class vectors and the first channel matrix is smaller than a modulus of a product of any first class vector in the L1 first class vectors and the first channel matrix.

As a sub-embodiment, a modulus of a product of { a conjugate transpose of a first reference vector }, a modulus of a product of three of the first channel matrix, the first reference vector } is smaller than a modulus of a product of three of { a conjugate transpose of a second reference vector, the first channel matrix, the second reference vector }, the first reference vector is any vector in the first vector set that does not belong to the L1 first-type vectors, and the second reference vector is any vector in the L1 first-type vectors.

As a sub-embodiment, a modulus of a product of each of the L1 first type vectors and the first channel matrix is greater than a first threshold, which is a real number greater than 0.

As an additional embodiment of the sub-embodiment described above, the first threshold is preset.

As an additional embodiment to the sub-embodiment described above, the first threshold is configurable.

As a sub-embodiment, the modulus of a complex number is equal to the square of the real part of the complex number plus the square of the imaginary part of the complex number, and then squared.

As a sub-embodiment, the modulus of a vector is equal to the sum of the squares of the moduli of all elements in the vector and the reopening square.

As a sub-embodiment, the second channel information indicates an index of each of the L1 first-type vectors in the first set of vectors.

As a sub-embodiment, the first channel information explicitly indicates the L1.

As a sub-embodiment, the first channel information implicitly indicates the L1.

As a sub-embodiment, measurements for the first reference signal are used to determine the L2 first type vectors.

As a sub-embodiment, the L2 first-type vectors are quantized from the first channel matrix.

As a sub-embodiment, any of the L2 first-type vectors belongs to the first set of vectors.

As a sub-embodiment, a modulus of a product of any vector of the first vector set that does not belong to the L2 first class vectors and the first channel matrix is smaller than a modulus of a product of any vector of the L2 first class vectors and the first channel matrix.

As a sub-embodiment, a modulus of a product of { a third reference vector, the first channel matrix, the third reference vector } is smaller than a modulus of a product of { a fourth reference vector, the first channel matrix, the fourth reference vector }, the third reference vector is any vector in the first set of vectors that does not belong to the L2 first-type vectors, and the fourth reference vector is any first-type vector in the L2 first-type vectors.

As a sub-embodiment, the third channel information indicates an index of each of the L2 first-type vectors in the first set of vectors.

As a sub-embodiment, the modulus of any vector in the first set of vectors is equal to 1.

As a sub-embodiment, the moduli of any two vectors in the first set of vectors are equal.

As a sub-embodiment, the dimensions of any two vectors in the first set of vectors are the same.

As a sub-embodiment, the vectors in the first set of vectors may be determined by columns of a DFT (Digital Fourier Transform) matrix having dimensions equal to the dimensions of the vectors in the first set of vectors.

As a sub-embodiment, the L1 first-type vectors are mutually orthogonal two by two.

As a sub-embodiment, a modulus of any of the L1 first-type vectors is equal to 1.

As a sub-embodiment, the modulo of any two of the L1 first type vectors is equal.

As a sub-embodiment, the moduli of at least two vectors of the L1 first type vectors are not equal.

As a sub-embodiment, the dimensions of any two first type vectors of the L1 first type vectors are the same.

As a sub-embodiment, the L2 first-type vectors are mutually orthogonal two by two.

As a sub-embodiment, a modulus of any of the L2 first-type vectors is equal to 1.

As a sub-embodiment, the modulo of any two of the L2 first type vectors is equal.

As a sub-embodiment, the moduli of at least two vectors of the L2 first type vectors are not equal.

As a sub-embodiment, the dimensions of any two first type vectors of the L2 first type vectors are the same.

As a sub-embodiment, the first Reference Signal includes at least one of { CSI-RS (Channel State Information-Reference Signal) }, DMRS (DeModulation Reference Signals), TRS (fine/frequency tracking references Signals, fine time/frequency domain tracking Reference Signals), PTRS (Phase error tracking Reference Signals), PSS (Primary Synchronization Signal ), SSS (Secondary Synchronization Signal, Secondary Synchronization Signal), PSSs (Primary link Synchronization Signal, Primary Secondary link Synchronization Signal), SSSs (Secondary link Synchronization Signal ).

As a sub-embodiment, the first reference signal is wideband.

As a sub-embodiment, the system bandwidth is divided into a positive integer number of frequency domain regions, the first reference signal occurs over all frequency domain regions within the system bandwidth, and any one of the positive integer number of frequency domain regions includes a positive integer number of consecutive subcarriers.

As a sub-embodiment, any two of the positive integer number of frequency domain regions include the same number of subcarriers.

As a sub-embodiment, any one of the positive integer number of frequency domain regions includes a positive integer number of PRBs (Physical Resource blocks).

As a sub-embodiment, the first information is carried by physical layer signaling.

As a sub-embodiment, the first Information is UCI (Uplink Control Information).

As a sub-embodiment, the first integer is RI (Rank Indicator).

As a sub-embodiment, the first information is transmitted on an uplink physical layer data channel (i.e. an uplink channel that can be used to carry physical layer data).

As a sub-embodiment, the first information is transmitted on an uplink physical layer control channel (i.e. an uplink channel that can only be used for carrying physical layer signaling).

As an auxiliary embodiment of the foregoing sub-embodiment, the Uplink Physical layer Control CHannel is a PUCCH (Physical Uplink Control CHannel).

As an auxiliary embodiment of the foregoing sub-embodiment, the uplink physical layer control channel is sPUCCH (short PUCCH ).

As an auxiliary embodiment of the foregoing sub-embodiment, the uplink physical layer control channel is NR-PUCCH (New Radio PUCCH).

As an auxiliary embodiment of the foregoing sub-embodiment, the uplink physical layer control channel is NB-PUCCH (NarrowBand band PUCCH).

As a sub-embodiment, the first channel information is UCI.

As a sub-embodiment, the first channel information is carried by physical layer signaling.

As a sub-embodiment, the second channel information is UCI.

As a sub-embodiment, the second Channel Information includes at least one of { CSI (Channel State Information), CRI (Channel State Information reference signal resource Indication) }.

As a sub-embodiment, the second channel information is carried by physical layer signaling.

As a sub-embodiment, the third channel information is UCI.

As a sub-embodiment, the third channel information comprises at least one of { CSI, CRI }.

As a sub-embodiment, the third channel information is carried by physical layer signaling.

As a sub-embodiment, the first channel information is transmitted on an uplink physical layer data channel (i.e. an uplink channel that can be used to carry physical layer data).

As a sub-embodiment, the first channel information is transmitted on an uplink physical layer control channel (i.e. an uplink channel that can only be used for carrying physical layer signaling).

As a sub-embodiment, the second channel information is transmitted on an uplink physical layer data channel (i.e. an uplink channel that can be used to carry physical layer data).

As a sub-embodiment, the second channel information is transmitted on an uplink physical layer control channel (i.e. an uplink channel that can only be used for carrying physical layer signaling).

As a sub-embodiment, the third channel information is transmitted on an uplink physical layer data channel (i.e. an uplink channel capable of carrying physical layer data).

As a sub-embodiment, the third channel information is transmitted on an uplink physical layer control channel (i.e. an uplink channel that can only be used for carrying physical layer signaling).

As a sub-embodiment, { the first information, the first channel information, the second channel information } is carried by the same physical layer signaling.

As a sub-embodiment, the { the first information, the first channel information, the second channel information } are transmitted on the same physical layer channel.

As a sub-embodiment, at least two of { the first information, the first channel information, the second channel information } are carried by different physical layer signaling.

As a sub-embodiment, at least two of { the first information, the first channel information, the second channel information } are transmitted on different physical layer channels.

As a sub-embodiment, the first information and the third channel information are carried by the same physical layer signaling.

As a sub-embodiment, the first information and the third channel information are transmitted on the same physical layer channel.

As a sub-embodiment, the first information and the third channel information are carried by different physical layer signaling.

As a sub-embodiment, the first information and the third channel information are transmitted on different physical layer channels.

Example 2

Embodiment 2 illustrates a schematic diagram of a network architecture, as shown in fig. 2.

Fig. 2 illustrates a network architecture 200 of LTE (Long-Term Evolution), LTE-a (Long-Term Evolution Advanced) and future 5G systems. The LTE network architecture 200 may be referred to as EPS (Evolved Packet System) 200. The EPS 200 may include one or more UEs (User Equipment) 201, E-UTRAN (Evolved UMTS terrestrial radio access network) 202, EPC (Evolved Packet Core) 210, HSS (Home Subscriber Server) 220, and internet service 230. The UMTS is compatible with Universal Mobile Telecommunications System (Universal Mobile Telecommunications System). The EPS may interconnect with other access networks, but these entities/interfaces are not shown for simplicity. As shown in fig. 2, 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. The E-UTRAN includes evolved node Bs (eNBs) 203 and other eNBs 204. The eNB203 provides user and control plane protocol terminations towards the UE 201. eNB203 may be connected to other enbs 204 via an X2 interface (e.g., backhaul). The eNB203 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 (transmit receive point), or some other suitable terminology. eNB203 provides UE201 with an access point to EPC 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. eNB203 connects to EPC210 through the S1 interface. The EPC210 includes an MME211, other MMEs 214, an S-GW (Service Gateway) 212, and a P-GW (Packet data Network Gateway) 213. MME211 is a control node that handles signaling between UE201 and EPC 210. In general, the MME211 provides bearer and connection management. All user IP (Internet protocol) packets are transmitted through S-GW212, and S-GW212 itself is connected to P-GW 213. The P-GW213 provides UE IP address allocation as well as other functions. The P-GW213 is connected to the internet service 230. The internet service 230 includes an operator-corresponding internet protocol service, and may specifically include the internet, an intranet, an IMS (IP Multimedia Subsystem), and a PS streaming service (PSs).

As a sub-embodiment, the UE201 corresponds to the UE in the present application.

As a sub-embodiment, the eNB203 corresponds to a base station in the present application.

Example 3

Embodiment 3 illustrates a schematic diagram of an embodiment of radio protocol architecture for the user plane and the control plane, as shown in fig. 3.

Fig. 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for the user plane and the control plane, fig. 3 showing the radio protocol architecture for the UE and the 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 eNB 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 an eNB 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-GW213 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 enbs. 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 eNB 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 eNB and the UE.

As a sub-embodiment, the radio protocol architecture in fig. 3 is applicable to the user equipment in the present application.

As a sub-embodiment, the radio protocol architecture in fig. 3 is applicable to the base station in the present application.

As a sub-embodiment, the first reference signal in the present application is generated in the PHY 301.

As a sub-embodiment, the second reference signal in this application is generated in the PHY 301.

As a sub-embodiment, the third reference signal in this application is generated in the PHY 301.

As a sub-embodiment, the first information in the present application is generated in the PHY 301.

As a sub-embodiment, the first channel information in this application is generated in the PHY 301.

As a sub-embodiment, the second channel information in this application is generated in the PHY 301.

As a sub-embodiment, the third channel information in this application is generated in the PHY 301.

As a sub-embodiment, the fourth channel information in this application is generated in the PHY 301.

As a sub embodiment, the fifth channel information in the present application is generated in the PHY 301.

As a sub-embodiment, the sixth channel information in this application is generated in the PHY 301.

As a sub embodiment, the seventh channel information in this application is generated in the PHY 301.

As a sub-embodiment, the first signaling in this application is generated in the RRC sublayer 306.

As a sub-embodiment, the first signaling in this application is generated in the MAC sublayer 302.

As a sub-embodiment, the first signaling in this application is generated in the PHY 301.

As a sub-embodiment, the first radio signal in the present application is generated in the RRC sublayer 306.

Example 4

Embodiment 4 illustrates a schematic diagram of an evolved node and a UE, as shown in fig. 4.

Fig. 4 is a block diagram of an eNB410 in communication with a UE450 in an access network. In the DL (Downlink), upper layer packets from the core network are provided to the controller/processor 475. The controller/processor 475 implements the functionality of layer L2. In the DL, the controller/processor 475 provides header compression, ciphering, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the UE450 based on various priority metrics. Controller/processor 475 is also responsible for HARQ operations, retransmission of lost packets, and signaling to UE 450. The transmit processor 416 implements various signal processing functions for the L1 layer (i.e., the physical layer). The signal processing functions include decoding and interleaving to facilitate Forward Error Correction (FEC) at the UE450 and mapping to signal constellation based on various modulation schemes (e.g., Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The coded and modulated symbols are then split into parallel streams. Each stream is then mapped to a multicarrier subcarrier, multiplexed with a reference signal (e.g., pilot) in the time and/or frequency domain, and then combined together using an Inverse Fast Fourier Transform (IFFT) to produce a physical channel carrying a time-domain multicarrier symbol stream. The multi-carrier stream is spatially pre-decoded to produce a plurality of spatial streams. Each spatial stream is then provided via a transmitter 418 to a different antenna 420. Each transmitter 418 modulates an RF carrier with a respective spatial stream for transmission. At the UE450, each receiver 454 receives a signal through its respective antenna 452. Each receiver 454 recovers information modulated onto an RF carrier and provides the information to a receive processor 456. The receive processor 456 performs various signal processing functions at the L1 level. The receive processor 456 performs spatial processing on the information to recover any spatial streams destined for the UE 450. If multiple spatial streams are destined for UE450, they may be combined into a single multicarrier symbol stream by receive processor 456. A receive processor 456 then converts the multicarrier symbol stream from the time-domain to the frequency-domain using a Fast Fourier Transform (FFT). The frequency domain signal comprises a separate multicarrier symbol stream for each subcarrier of the multicarrier signal. The symbols on each subcarrier, as well as the reference signal, are recovered and demodulated by determining the most likely signal constellation point transmitted by the eNB410, and generating soft decisions. The soft decisions are then decoded and deinterleaved to recover the data and control signals that were originally transmitted by the eNB410 on the physical channel. The data and control signals are then provided to a controller/processor 459. The controller/processor 459 implements the L2 layer. The controller/processor can be associated with a memory 460 that stores program codes and data. Memory 460 may be referred to as a computer-readable medium. In the DL, the controller/processor 459 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer packets from the core network. The upper layer packets are then provided to all protocol layers above the L2 layer. Various control signals may also be provided to L3 for L3 processing. The controller/processor 459 is also responsible for error detection using an Acknowledgement (ACK) and/or Negative Acknowledgement (NACK) protocol to support HARQ operations. In the UL (Uplink), a data source 467 is used to provide the upper layer packet to the controller/processor 459. Data source 467 represents all protocol layers above the L2 layer. Similar to the functionality described in connection with the DL transmission of the eNB410, the controller/processor 459 implements the L2 layer for the user plane and the control plane by providing header compression, ciphering, packet segmentation and reordering, and multiplexing between logical and transport channels based on the radio resource allocation of the eNB 410. The controller/processor 459 is also responsible for HARQ operations, retransmission of lost packets, and signaling to the eNB 410. An appropriate coding and modulation scheme is selected and spatial processing is facilitated by a transmit processor 468. The spatial streams generated by the transmit processor 468 are provided to different antennas 452 via separate transmitters 454. Each transmitter 454 modulates an RF carrier with a respective spatial stream for transmission. The UL transmissions are processed at the eNB410 in a manner similar to that described in connection with the receiver functionality at the UE 450. Each receiver 418 receives a signal through its respective antenna 420. Each receiver 418 recovers information modulated onto an RF carrier and provides the information to a receive processor 470. Receive processor 470 may implement the L1 layer. The controller/processor 475 implements the L2 layer. The controller/processor 475 can be associated with a memory 476 that stores program codes and data. Memory 476 may be referred to as a computer-readable medium. In the UL, the controller/processor 475 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer packets from the UE 450. Upper layer packets from the controller/processor 475 may be provided to the core network. Controller/processor 475 is also responsible for error detection using the ACK and/or NACK protocol to support HARQ operations.

As a sub-embodiment, the UE450 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.

As a sub-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: the method includes receiving first information, operating a first wireless signal on a first carrier, and performing second information on a target carrier.

As a sub-embodiment, the eNB410 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.

As a sub-embodiment, the eNB410 includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: the method includes transmitting first information, performing a first wireless signal on a first carrier, and operating second information on a target carrier.

As a sub-embodiment, the UE450 corresponds to the UE in this application.

As a sub-embodiment, the eNB410 corresponds to the base station in this application.

As a sub-embodiment, at least one of the transmit processor 416 and the controller/processor 475 is configured to transmit the first reference signal and at least one of the receive processor 456 and the controller/processor 459 is configured to receive the first reference signal.

As a sub-embodiment, at least one of the transmit processor 416 and the controller/processor 475 is configured to transmit the second reference signal and at least one of the receive processor 456 and the controller/processor 459 is configured to receive the second reference signal.

As a sub-embodiment, at least one of the transmit processor 416 and the controller/processor 475 is configured to transmit the third reference signal and at least one of the receive processor 456 and the controller/processor 459 is configured to receive the third reference signal.

As a sub-embodiment, at least one of the transmit processor 416 and the controller/processor 475 is configured to transmit the first signaling in the present application, and at least one of the receive processor 456 and the controller/processor 459 is configured to receive the first signaling in the present application.

As a sub-embodiment, at least one of the transmit processor 416 and the controller/processor 475 is configured to transmit the first wireless signal of the present application, and at least one of the receive processor 456 and the controller/processor 459 is configured to receive the first wireless signal of the present application.

As a sub-embodiment, at least one of the transmit processor 468 and the controller/processor 459 is configured to transmit the first information herein and at least one of the receive processor 470 and the controller/processor 475 is configured to receive the first information herein.

As a sub-embodiment, at least one of the transmit processor 468 and the controller/processor 459 is configured to transmit the first channel information herein and at least one of the receive processor 470 and the controller/processor 475 is configured to receive the first channel information herein.

As a sub-embodiment, at least one of the transmit processor 468 and the controller/processor 459 is configured to transmit the second channel information and at least one of the receive processor 470 and the controller/processor 475 is configured to receive the second channel information.

As a sub-embodiment, at least one of the transmit processor 468 and the controller/processor 459 is configured to transmit the third channel information and at least one of the receive processor 470 and the controller/processor 475 is configured to receive the third channel information.

As a sub-embodiment, at least one of the transmit processor 468 and the controller/processor 459 is configured to transmit the fourth channel information and at least one of the receive processor 470 and the controller/processor 475 is configured to receive the fourth channel information.

As a sub-embodiment, at least one of the transmit processor 468 and the controller/processor 459 is configured to transmit the fifth channel information and at least one of the receive processor 470 and the controller/processor 475 is configured to receive the fifth channel information.

As a sub-embodiment, at least one of the transmit processor 468 and the controller/processor 459 is configured to transmit the sixth channel information and at least one of the receive processor 470 and the controller/processor 475 is configured to receive the sixth channel information.

As a sub-embodiment, at least one of the transmit processor 468 and the controller/processor 459 is configured to transmit the seventh channel information and at least one of the receive processor 470 and the controller/processor 475 is configured to receive the seventh channel information.

Example 5

Embodiment 5 illustrates a flow chart of wireless transmission, as shown in fig. 5. In fig. 5, base station N1 is the serving cell maintenance base station for user equipment U2. In fig. 5, the steps in blocks F1 through F6, respectively, are optional.

For N1, a first signaling is sent in step S101; transmitting a first reference signal in step S11; receiving the first information in step S12; receiving the first channel information and the second channel information in step S13; transmitting a second reference signal in step S102; receiving fourth channel information in step S103; transmitting a third reference signal in step S104; receiving sixth channel information in step S105; in step S106, a first wireless signal is transmitted.

For U2, a first signaling is received in step S201; receiving a first reference signal in step S21; transmitting the first information in step S22; transmitting the first channel information and the second channel information in step S23; receiving a second reference signal in step S202; transmitting fourth channel information in step S203; receiving a third reference signal in step S204; transmitting sixth channel information in step S205; a first wireless signal is received in step S206.

In embodiment 5, the first information is used by the N1 to determine a first integer, and the measurement for the first reference signal is used by the U2 to determine the first integer. The first integer is equal to 1, the second channel information is used by the N1 to determine L1 first class vectors, the first channel information is used by the N1 to determine the L1, the L1 is a positive integer no greater than L2, and the L2 is a positive integer. The fourth channel information is used by the N1 to determine K first coefficient groups, any one of the K first coefficient groups comprising a positive integer number of coefficients, any one of the K first coefficient groups being a positive real number, the K being equal to the first integer. The measurements for the second reference signal are used by the U2 to determine the K first coefficient sets. The sixth channel information is used by the N1 to determine K third coefficient sets, any one of the K third coefficient sets comprising positive integer coefficients, any one of the K third coefficient sets being a complex number. The measurements for the third reference signal are used by the U2 to determine the K third coefficient sets. The first signaling is used by the U2 to determine the L2. K second class vectors are used by the N1 to generate the first wireless signal.

As a sub-embodiment, the value of L1 is variable.

As a sub-embodiment, the U2 self-determines the value of the L1 from measurements for the first reference signal.

As a sub-embodiment, the value of L2 is predetermined.

As a sub-embodiment, the measurements for the first reference signal are used by the U2 to generate a first channel matrix, the first integer being a rank (rank) of the first channel matrix.

As an additional embodiment of the above sub-embodiment, the first channel matrix is a channel parameter matrix between the U2 and the N1.

As an additional embodiment of the above sub-embodiment, the first channel matrix is a channel covariance matrix between the U2 and the N1.

As a sub-embodiment, the measurements for the first reference signal are used by the U2 to determine { the L1, the L1 first class vectors }.

As a sub-embodiment, the first reference signal comprises at least one of { CSI-RS, DMRS, TRS, PTRS, PSS, SSS, PSSs, SSSs }.

As a sub-embodiment, the second reference signal comprises at least one of { CSI-RS, DMRS, TRS, PTRS, PSS, SSS, PSSs, SSSs }.

As a sub-embodiment, the third reference signal includes at least one of { CSI-RS, DMRS, TRS, PTRS, PSS, SSS, PSSs, SSSs }.

As a sub-embodiment, the first reference signals are respectively transmitted by T1 first antenna ports, the second reference signals are respectively transmitted by T1 second antenna ports, the third reference signals are respectively transmitted by T1 third antenna ports, the T1 first antenna ports and the T1 second antenna ports are in one-to-one correspondence, the T1 second antenna ports and the T1 third antenna ports are in one-to-one correspondence, and the T1 is a positive integer.

As a sub-embodiment of the foregoing embodiment, any one of the T1 first antenna ports is the same as { corresponding second antenna port, corresponding third antenna port }.

As a sub-embodiment of the above-mentioned embodiments, any one of the T1 first antenna ports and the corresponding second antenna port are QCL, and any one of the T1 first antenna ports and the corresponding third antenna port are QCL.

As a sub-embodiment, two antenna ports are QCL means: the large-scale characteristics of the channel experienced by a radio signal transmitted on one antenna port can be inferred from the large-scale characteristics (properties) of the channel experienced by a radio signal transmitted on another antenna port. The large-scale characteristics include one or more of { delay spread (delay spread), Doppler spread (Doppler spread), Doppler shift (Doppler shift), average gain (average gain), average delay (average delay), angle of arrival (angle of arrival), angle of departure (angle of departure), spatial correlation }.

As a sub-embodiment, two antenna ports are QCL means: the two antenna ports correspond to the same analog beamforming vector.

As a sub-embodiment, two antenna ports are QCL means: the two antenna ports correspond to the same beamforming vector.

As a sub-embodiment, two antenna ports being of the QCL means: the user equipment may receive the wireless signals transmitted on the two antenna ports with the same beamforming vector.

As a sub-embodiment, two antenna ports being of the QCL means: the user equipment may receive the wireless signals transmitted on the two antenna ports with the same spatial filtering.

As a sub-embodiment, the first reference signal, the second reference signal and the third reference signal are transmitted on the same carrier.

As a sub-embodiment, at least one of the K first coefficient groups includes L1-1 coefficients.

As a sub-embodiment, at least one of the K first coefficient groups includes L1 coefficients.

As a sub-embodiment, one of the K first coefficient groups includes L1-1 coefficients, and each of the other ones of the K first coefficient groups includes L1 coefficients.

As a sub-embodiment, any coefficient of the K first coefficient groups belongs to a first coefficient set, the first coefficient set includes a positive integer number of coefficients, and the first coefficient set does not include 0.

As a sub-embodiment, the fourth channel information indicates an index of each coefficient of the K first coefficient groups in the first coefficient set.

As a sub-embodiment, any coefficient in the K first coefficient groups is a positive real number.

As a sub-embodiment, the coefficients in the first set of coefficients are all positive real numbers.

As a sub-embodiment, at least one third coefficient group among the K third coefficient groups includes L1-1 coefficients.

As a sub-embodiment, at least one third coefficient group among the K third coefficient groups includes L1 coefficients.

As a sub-embodiment, one of the K third coefficient sets includes L1-1 coefficients, and each of the other ones of the K third coefficient sets includes L1 coefficients.

As a sub-embodiment, the K third coefficient groups and the K first coefficient groups are in one-to-one correspondence, and any one of the K third coefficient groups includes a number of coefficients equal to a number of coefficients included in the corresponding first coefficient group.

As a sub-embodiment, { the first information, the first channel information, the second channel information, the fourth channel information, and the sixth channel information } are carried by the same physical layer signaling.

As a sub-embodiment, { the first information, the first channel information, the second channel information, the fourth channel information, and the sixth channel information } are transmitted on the same physical layer channel.

As a sub-embodiment, at least two of { the first information, the first channel information, the second channel information, the fourth channel information, the sixth channel information } are carried by different physical layer signaling.

As a sub-embodiment, at least two of { the first information, the first channel information, the second channel information, the fourth channel information, the sixth channel information } are transmitted on different physical layer channels.

As a sub-embodiment, any coefficient of the K third coefficient sets belongs to a third coefficient set, the third coefficient set comprising a positive integer number of coefficients.

As a sub-embodiment, any coefficient in the third set of coefficients is a complex number.

As a sub-embodiment, any coefficient in the third set of coefficients is a complex number modulo 1.

As a sub-embodiment, the modes of at least two coefficients in the third set of coefficients are not equal.

As a sub-embodiment, the sixth channel information indicates an index of each coefficient in the K third coefficient sets in the third coefficient set.

As a sub-embodiment, the sixth channel information and the fourth channel information are the same channel information.

As a sub-embodiment, the K first coefficient groups and the K third coefficient groups are determined by the same channel information.

As a sub-embodiment, the first signaling is used by the U2 to determine the first set of coefficients.

As a sub-embodiment, the first signaling is used by the U2 to determine the first set of vectors.

As a sub-embodiment, the first signaling is used by the U2 to determine the third set of coefficients.

As a sub-embodiment, the first signaling is higher layer signaling.

As a sub-embodiment, the first signaling is RRC signaling.

As a sub-embodiment, the first signaling is mac ce signaling.

As a sub-embodiment, the L1 first-type vectors, the K first coefficient sets, the K third coefficient sets are used by the N1 to determine the K second-type vectors.

As a sub-embodiment, the L1 first class vectors and the K first coefficient groups are used by the N1 to determine the K second class vectors.

As a sub-embodiment, the L1 first-type vectors and the K third coefficient sets } are used by the N1 to determine the K second-type vectors.

As a sub-embodiment, the K vectors of the second class are used by the N1 to determine a precoding matrix corresponding to the first wireless signal.

As a sub-embodiment, the column vectors in the precoding matrix corresponding to the first wireless signal include part or all of the K second-type vectors.

As a sub-embodiment, the first wireless signal includes physical layer data.

As a sub-embodiment, under an LC (Linear Combination) based CSI feedback mechanism, CSI feedback includes a plurality of basis vectors and corresponding combining coefficients. The L1 first-type vectors represent L1 basis vectors, the K first coefficient sets represent amplitudes in K combined coefficients corresponding to the L1 basis vectors, and the K third coefficient sets represent phases in K combined coefficients corresponding to the L1 basis vectors, wherein the K combined coefficients respectively correspond to K layers (layers). The K second-class vectors are obtained by weighting and merging the L1 basis vectors respectively by the coefficients in the K first coefficient groups and the K third coefficient groups. Namely:

wherein the content of the first and second substances,

b_i，p_k,i，c_k,ithe second class vectors are respectively the kth one of the K second class vectors, the ith one of the L1 first class vectors, the ith coefficient of the kth one of the K first coefficient sets, and the ith coefficient of the kth one of the K third coefficient sets.

As a sub-embodiment of the above embodiment, all coefficients in the K first coefficient groups are positive real numbers.

As a sub-embodiment of the above embodiment, all coefficients in the K third coefficient sets are complex numbers.

As a sub-embodiment of the above embodiment, all coefficients in the K third coefficient sets are complex numbers modulo 1.

As a sub-embodiment of the above embodiment, the modes of at least two coefficients in the K third coefficient sets are not equal.

As a sub-embodiment, blocks F1 through F6 of fig. 5 are all present.

As a sub-embodiment, block F1, block 3 through block F6 in fig. 5 are all present, and block F2 is not present.

As an additional embodiment of the sub-embodiments described above, the second reference signal is the first reference signal.

As an additional embodiment to the sub-embodiments described above, the measurements for the first reference signal are used by the U2 to determine the K first coefficient sets.

As an auxiliary embodiment of the foregoing sub-embodiment, { reference resources corresponding to the first information in the frequency domain, reference resources corresponding to the first channel information in the frequency domain, reference resources corresponding to the second channel information in the frequency domain, and reference resources corresponding to the fourth channel information in the frequency domain } are the same.

As an auxiliary embodiment of the foregoing sub-embodiment, the { reference resource corresponding to the first information in the frequency domain, the reference resource corresponding to the first channel information in the frequency domain, the reference resource corresponding to the second channel information in the frequency domain, and the reference resource corresponding to the fourth channel information in the frequency domain } are all system bandwidths (of carriers occupied by the first reference signal).

As an auxiliary embodiment of the foregoing sub-embodiment, the reference resource corresponding to the sixth channel information in the frequency domain is a part of the system bandwidth.

As a sub-embodiment, blocks F1 through F3, F5, and F6 in fig. 5 all exist, and block F4 does not exist.

As an additional embodiment of the sub-embodiments described above, the third reference signal is the second reference signal.

As an additional embodiment of the above sub-embodiment, the measurements for the second reference signal are used by the U2 to determine the K third coefficient sets.

As an auxiliary embodiment of the foregoing sub-embodiment, the reference resource corresponding to the fourth channel information in the frequency domain and the reference resource corresponding to the sixth channel information in the frequency domain are the same.

As an auxiliary embodiment of the foregoing sub-embodiment, { reference resources corresponding to the first information in the frequency domain, reference resources corresponding to the first channel information in the frequency domain, and reference resources corresponding to the second channel information in the frequency domain } are all system bandwidths (of carriers occupied by the first reference signal).

As an auxiliary embodiment of the foregoing sub-embodiment, a reference resource corresponding to the fourth channel information in the frequency domain and a reference resource corresponding to the sixth channel information in the frequency domain are both part of the system bandwidth.

As a sub-embodiment, block F1, block F3, block F5, and block F6 in fig. 5 all exist, and block F2 and block F4 do not exist.

As an additional embodiment of the sub-embodiments, the second reference signal is the first reference signal, and the third reference signal is the first reference signal.

As an additional embodiment of the above sub-embodiment, the measurements for the first reference signal are used by the U2 to determine the K third coefficient sets.

As an auxiliary embodiment of the foregoing sub-embodiment, { reference resources corresponding to the first information in the frequency domain, reference resources corresponding to the first channel information in the frequency domain, reference resources corresponding to the second channel information in the frequency domain, reference resources corresponding to the fourth channel information in the frequency domain, and reference resources corresponding to the sixth channel information in the frequency domain } are the same.

As an auxiliary embodiment of the foregoing sub-embodiment, { reference resources corresponding to the first information in the frequency domain, reference resources corresponding to the first channel information in the frequency domain, reference resources corresponding to the second channel information in the frequency domain, reference resources corresponding to the fourth channel information in the frequency domain, and reference resources corresponding to the sixth channel information in the frequency domain } are all system bandwidths (of carriers occupied by the first reference signal).

As a sub-embodiment, block F1, block F4 through block F6 in fig. 5 all exist, and block F2 and block F3 do not exist.

As a sub-implementation of the above embodiment, the L1 first-type vectors and the K third coefficient sets } are used by the N1 to determine the K second-type vectors.

As a sub-embodiment, blocks F1 through F3, F6 in fig. 5 all exist, and blocks F4 and F5 do not exist.

As an additional embodiment of the sub-embodiments described above, the L1 first-class vectors and the K first coefficient groups are used by the N1 to determine the K second-class vectors.

Example 6

Embodiment 6 illustrates a flow chart of wireless transmission, as shown in fig. 6. In fig. 6, base station N3 is the serving cell maintenance base station for user equipment U3. In fig. 6, the steps in blocks F7 through F12, respectively, are optional.

For N3, a first signaling is sent in step S301; transmitting a first reference signal in step S31; receiving the first information in step S32; receiving third channel information in step S33; transmitting a second reference signal in step S302; receiving fifth channel information in step S303; transmitting a third reference signal in step S304; receiving seventh channel information in step S305; a first wireless signal is transmitted in step S306.

For U4, a first signaling is received in step S401; receiving a first reference signal in step S41; transmitting the first information in step S42; transmitting third channel information in step S43; receiving a second reference signal in step S402; transmitting fifth channel information in step S403; receiving a third reference signal in step S404; transmitting seventh channel information in step S405; in step S406, a first wireless signal is received.

In embodiment 6, the first information is used by the N3 to determine a first integer, and the measurement for the first reference signal is used by the U4 to determine the first integer. The first integer is greater than 1, the third channel information is used by the N3 to determine L2 vectors of a first class, the L2 is a positive integer. The fifth channel information is used by the N3 to determine K second coefficient groups, any one of the K second coefficient groups comprising a positive integer number of coefficients, any one of the K second coefficient groups being a non-negative real number, the K being equal to the first integer. The measurements for the second reference signal are used by the U4 to determine the K second coefficient sets. The seventh channel information is used by the N3 to determine K fourth coefficient groups, any one of the K fourth coefficient groups comprising a positive integer number of coefficients, any one of the K fourth coefficient groups being a complex number. The measurement for the third reference signal is used by the U4 to determine the K fourth coefficient sets. The first signaling is used by the U4 to determine the L2. K second class vectors are used by the N3 to generate the first wireless signal.

As a sub-embodiment, the value of L2 is predetermined.

As a sub-embodiment, measurements for the first reference signal are used by the U4 to determine the L2 first class vectors.

As a sub-embodiment, any of the L2 first-type vectors belongs to the first vector set in this application.

As a sub-embodiment, at least one of the K second coefficient groups includes L2-1 coefficients.

As a sub-embodiment, at least one of the K second coefficient groups includes L2 coefficients.

As a sub-embodiment, one of the K second coefficient groups includes L2-1 coefficients, and each of the other ones of the K second coefficient groups includes L2 coefficients.

As a sub-embodiment, any coefficient of the K second coefficient groups belongs to a second coefficient set, the second coefficient set comprising a positive integer number of coefficients, the second coefficient set comprising 0.

As a sub-embodiment, the fifth channel information indicates an index of each coefficient of the K second coefficient groups in the second coefficient set.

As a sub-embodiment, at least one of the K fourth coefficient groups includes L2-1 coefficients.

As a sub-embodiment, at least one of the K fourth coefficient groups includes L2 coefficients.

As a sub-embodiment, one of the K fourth coefficient groups includes L2-1 coefficients, and each of the other ones of the K fourth coefficient groups includes L2 coefficients.

As a sub-embodiment, the K fourth coefficient groups and the K second coefficient groups are in one-to-one correspondence, and any one of the K fourth coefficient groups includes a number of coefficients equal to a number of coefficients included in the corresponding second coefficient group.

As a sub-embodiment, { the first information, the third channel information, the fifth channel information, and the seventh channel information } are carried by the same physical layer signaling.

As a sub-embodiment, { the first information, the third channel information, the fifth channel information, and the seventh channel information } are transmitted on the same physical layer channel.

As a sub-embodiment, at least two of { the first information, the third channel information, the fifth channel information, the seventh channel information } are carried by different physical layer signaling.

As a sub-embodiment, at least two of { the first information, the third channel information, the fifth channel information, the seventh channel information } are transmitted on different physical layer channels.

As a sub-embodiment, any coefficient of the K fourth coefficient groups belongs to the third coefficient set in this application.

As a sub-embodiment, the seventh channel information indicates an index of each coefficient of the K fourth coefficient groups in the third coefficient set.

As a sub-embodiment, the seventh channel information and the fifth channel information are the same channel information.

As a sub-embodiment, the K second coefficient groups and the K fourth coefficient groups are determined by the same channel information.

As a sub-embodiment, the first signaling is used by the U4 to determine the second set of coefficients.

As a sub-embodiment, the L2 first-type vectors, the K second coefficient sets, the K fourth coefficient sets are used by the N3 to determine the K second-type vectors.

As a sub-embodiment, the L2 first-type vectors and the K second coefficient groups are used by the N3 to determine the K second-type vectors.

As a sub-embodiment, the L2 first-class vectors and the K fourth coefficient groups are used by the N3 to determine the K second-class vectors.

As a sub-embodiment, under an LC (Linear Combination) based CSI feedback mechanism, CSI feedback includes a plurality of basis vectors and corresponding combining coefficients. The L2 first-type vectors represent L2 basis vectors, the K second coefficient sets represent magnitudes in K combined coefficients corresponding to the L2 basis vectors, and the K fourth coefficient sets represent phases in K combined coefficients corresponding to the L2 basis vectors, wherein the K combined coefficients respectively correspond to K layers (layers). The K second-class vectors are obtained by weighting the L2 basis vectors by the coefficients in the K second coefficient groups and the K fourth coefficient groups, respectively, and then combining the weighted basis vectors. Namely:

wherein the content of the first and second substances,

b′_i，p′_k,i，c′_k,ia second class vector that is a kth one of the K second class vectors, an ith one of the L2 first class vectors, an ith coefficient of a kth one of the K second coefficient groups, and an ith coefficient of a kth one of the K fourth coefficient groups, respectively.

As a sub-embodiment of the above embodiment, all coefficients in the K second coefficient groups are non-negative real numbers.

As a sub-embodiment of the above embodiment, all coefficients in the K fourth coefficient groups are complex.

As a sub-embodiment of the above embodiment, all coefficients in the K fourth coefficient groups are complex numbers modulo 1.

As a sub-embodiment of the above embodiment, the modes of at least two coefficients in the K fourth coefficient groups are not equal.

As a sub-embodiment, blocks F7 through F12 of fig. 6 are all present.

As a sub-embodiment, block F7, block 9 through block F12 in fig. 6 are all present, and block F8 is not present.

As an additional embodiment to the sub-embodiments described above, the measurements for the first reference signal are used by the U4 to determine the K second coefficient sets.

As an additional embodiment of the foregoing sub-embodiment, { Reference Resource (Reference Resource) corresponding to the first information in the frequency domain, Reference Resource corresponding to the third channel information in the frequency domain, and Reference Resource corresponding to the fifth channel information in the frequency domain } are the same.

As an auxiliary embodiment of the foregoing sub-embodiment, { Reference Resource (Reference Resource) corresponding to the first information in frequency domain, Reference Resource corresponding to the third channel information in frequency domain, and Reference Resource corresponding to the fifth channel information in frequency domain } are all system bandwidths (of carriers occupied by the first Reference signal).

As an auxiliary embodiment of the foregoing sub-embodiment, the reference resource corresponding to the seventh channel information in the frequency domain } is a part of the system bandwidth.

As a sub-embodiment, blocks F7 through 9, F11, and F12 in fig. 6 are all present, and block F10 is not present.

As a sub-embodiment of the above embodiment, the third reference signal is the second reference signal.

As a sub-embodiment of the above embodiment, the measurement for the second reference signal is used by the U4 to determine the K fourth coefficient sets.

As a sub-embodiment of the foregoing embodiment, the reference resource corresponding to the fifth channel information in the frequency domain and the reference resource corresponding to the seventh channel information in the frequency domain are the same.

As a sub-embodiment of the foregoing embodiment, the reference resource corresponding to the first information in the frequency domain and the reference resource corresponding to the third channel information in the frequency domain are both system bandwidths (of the carrier occupied by the first reference signal).

As a sub-embodiment of the foregoing embodiment, a reference resource corresponding to the fifth channel information in the frequency domain and a reference resource corresponding to the seventh channel information in the frequency domain are both part of the system bandwidth.

As a sub-embodiment, block F7, block 9, block F11, and block F12 in FIG. 6 are all present, and block F8 and block F10 are not present.

As an additional embodiment to the sub-embodiments described above, the measurements for the first reference signal are used by the U4 to determine the K fourth coefficient sets.

As an auxiliary embodiment of the foregoing sub-embodiment, { the reference resource corresponding to the first information in the frequency domain, the reference resource corresponding to the third channel information in the frequency domain, the reference resource corresponding to the fifth channel information in the frequency domain, and the reference resource corresponding to the seventh channel information in the frequency domain } are the same.

As an auxiliary embodiment of the foregoing sub-embodiment, all of { the reference resource corresponding to the first information in the frequency domain, the reference resource corresponding to the third channel information in the frequency domain, the reference resource corresponding to the fifth channel information in the frequency domain, and the reference resource corresponding to the seventh channel information in the frequency domain } are system bandwidths (of carriers occupied by the first reference signal).

As a sub-embodiment, block F7, block 10 through block F12 in fig. 6 are all present, and block F8 and block F9 are not present.

As a sub-implementation of the above embodiment, the L2 first-class vectors and the K fourth coefficient groups } are used by the N3 to determine the K second-class vectors.

As a sub-embodiment, blocks F7 through 9, F12 in fig. 6 all exist, and blocks F10 and F11 do not exist.

As a sub-implementation of the above embodiment, the L2 first-class vectors and the K second coefficient groups are used by the N3 to determine the K second-class vectors.

Example 7

Embodiment 7 illustrates a flowchart for deciding to transmit { first channel information, second channel information, fourth channel information, sixth channel information } or { third channel information, fifth channel information, seventh channel information }, as shown in fig. 7.

In embodiment 7, the ue in this application first receives a first reference signal, determines a first integer according to a measurement on the first reference signal, where the first integer is greater than 0, and then sends first information. If the first integer is equal to 1, the user equipment sends first channel information and second channel information; and if the first integer is larger than 1, the user equipment sends third channel information. Then, the user equipment receives a second reference signal. If the first integer is equal to 1, the user equipment sends fourth channel information; and if the first integer is larger than 1, the user equipment sends fifth channel information. Next, the user equipment receives a third reference signal. If the first integer is equal to 1, the user equipment sends sixth channel information; and if the first integer is larger than 1, the user equipment sends seventh channel information.

Wherein the first information indicates the first integer, the second channel information is used to determine L1 first class vectors, the first channel information is used to determine the L1, the third channel information is used to determine L2 first class vectors, the fourth channel information is used to determine K first coefficient groups, the fifth channel information is used to determine K second coefficient groups, the sixth channel information is used to determine K third coefficient groups, and the seventh channel information is used to determine K fourth coefficient groups. Measurements for the first reference signal are used to determine at least one of the L1 first-type vectors, the L2 first-type vectors, measurements for the second reference signal are used to determine at least one of the K first coefficient sets, K second coefficient sets, and measurements for the third reference signal are used to determine at least one of the K third coefficient sets, K fourth coefficient sets. The K is equal to the first integer, the L1 is a positive integer no greater than the L2, the L2 is a positive integer.

Example 8

Embodiment 8 illustrates a schematic diagram of resource mapping of a first reference signal, a second reference signal and a third reference signal on a time-frequency domain, as shown in fig. 8.

In embodiment 8, the third reference signal is the second reference signal, and thus the third reference signal is not present in fig. 8. The time domain resources occupied by the first reference signal and the time domain resources occupied by the second reference signal are orthogonal (non-overlapping). The system bandwidth is divided into a positive integer number of frequency domain regions, the first reference signal occurs over W1 frequency domain regions, and the second reference signal occurs over W2 frequency domain regions. The W1 and the W2 are each positive integers. The W1 is greater than the W2, the W1 frequency domain regions include the W2 frequency domain regions.

As a sub-embodiment, the first reference signal is wideband.

As a sub-embodiment, the first reference signal occurs in each of the positive integer number of frequency domain regions.

As a sub-embodiment, the second reference signal is narrowband.

As a sub-embodiment, the second reference signal only appears on a partial frequency domain region of the positive integer number of frequency domain regions.

As a sub-embodiment, any one of the positive integer number of frequency domain regions includes a positive integer number of consecutive subcarriers.

As a sub-embodiment, { reference resources corresponding to the first channel information in the present application in the frequency domain, reference resources corresponding to the second channel information in the present application in the frequency domain, and reference resources corresponding to the third channel information in the present application in the frequency domain } are the W1 frequency domain regions.

As a sub-embodiment, the reference resource corresponding to the fourth channel information in the present application in the frequency domain, the reference resource corresponding to the fifth channel information in the present application in the frequency domain, the reference resource corresponding to the sixth channel information in the present application in the frequency domain, and the reference resource corresponding to the seventh channel information in the present application in the frequency domain are the W2 frequency domain regions.

Example 9

Embodiment 9 illustrates a schematic diagram of resource mapping of a first reference signal, a second reference signal and a third reference signal on a time-frequency domain, as shown in fig. 9.

In embodiment 9, the second reference signal is the first reference signal, and thus the second reference signal is not present in fig. 9. The time domain resources occupied by the first reference signal and the time domain resources occupied by the third reference signal are orthogonal (non-overlapping). The system bandwidth is divided into a positive integer number of frequency domain regions, the first reference signal occurs over W1 frequency domain regions, and the third reference signal occurs over W3 frequency domain regions. The W1 and the W3 are each positive integers. The W1 is greater than the W3, the W1 frequency domain regions include the W3 frequency domain regions.

As a sub-embodiment, the third reference signal is narrowband.

As a sub-embodiment, the third reference signal only appears on a partial frequency domain region of the positive integer number of frequency domain regions.

As a sub-embodiment, { reference resources corresponding to the first channel information in the present application in the frequency domain, reference resources corresponding to the second channel information in the present application in the frequency domain, reference resources corresponding to the third channel information in the present application in the frequency domain, reference resources corresponding to the fourth channel information in the present application in the frequency domain, reference resources corresponding to the fifth channel information in the present application in the frequency domain } are the W1 frequency domain regions.

As a sub-embodiment, { reference resource corresponding to the sixth channel information in the present application in the frequency domain, and reference resource corresponding to the seventh channel information in the present application in the frequency domain } are the W3 frequency domain regions.

Example 10

Embodiment 10 illustrates a schematic diagram of resource mapping of a first reference signal, a second reference signal, and a third reference signal in a time-frequency domain, as shown in fig. 10.

In embodiment 9, the time domain resources occupied by the first reference signal, the time domain resources occupied by the second reference signal, and the time domain resources occupied by the third reference signal are mutually orthogonal (non-overlapping) by two. The system bandwidth is divided into a positive integer number of frequency domain regions, the first reference signal occurs over W1 frequency domain regions, the second reference signal occurs over W2 frequency domain regions, and the third reference signal occurs over W3 frequency domain regions. The W1, the W2, and the W3 are each positive integers. The W1 is equal to the W2, the W1 is greater than the W3, the W1 frequency-domain regions and the W2 frequency-domain regions are overlapping, the W1 frequency-domain regions include the W3 frequency-domain regions.

As a sub-embodiment, the first reference signal is wideband.

As a sub-embodiment, the second reference signal is wideband.

As a sub-embodiment, the third reference signal is narrowband.

As a sub-embodiment, the reference resource corresponding to the fourth channel information in the present application in the frequency domain and the reference resource corresponding to the fifth channel information in the present application in the frequency domain are the W2 frequency domain regions.

As a sub-embodiment, the reference resource corresponding to the sixth channel information in the present application in the frequency domain and the reference resource corresponding to the seventh channel information in the present application in the frequency domain are the W3 frequency domain regions.

Example 11

Embodiment 11 illustrates a schematic diagram of a time sequence relationship of first information, first channel information, second channel information, fourth channel information, and sixth channel information in a time domain, as shown in fig. 11.

In embodiment 11, time domain resources occupied by the first information, the second channel information, and the sixth channel information are mutually orthogonal (non-overlapping) in pairs, the first channel information and the first information occupy the same time domain resource, and the fourth channel information and the second channel information occupy the same time domain resource. The starting time of the time domain resource occupied by the second channel information is later than the ending time of the time domain resource occupied by the first channel information, and the starting time of the time domain resource occupied by the sixth channel information is later than the ending time of the time domain resource occupied by the second channel information.

As a sub-embodiment, the first information and the first channel information are carried by the same physical layer signaling.

As a sub-embodiment, the first information and the first channel information are transmitted on the same physical layer channel.

As a sub-embodiment, the second channel information and the fourth channel information are carried by the same physical layer signaling.

As a sub-embodiment, the second channel information and the fourth channel information are transmitted on the same physical layer channel.

As a sub-embodiment, the first information, the second channel information, and the sixth channel information are respectively carried by different physical layer signaling.

As a sub-embodiment, the first information, the second channel information and the sixth channel information are transmitted on different physical layer channels, respectively.

Example 12

Embodiment 12 illustrates a schematic diagram of a time sequence relationship of the first information, the first channel information, the second channel information, the fourth channel information, and the sixth channel information in a time domain, as shown in fig. 12.

In embodiment 12, the time domain resources occupied by the first information, the first channel information, the second channel information, and the sixth channel information are mutually orthogonal (non-overlapping) in pairs, and the fourth channel information and the second channel information occupy the same time domain resource.

The starting time of the time domain resource occupied by the first channel information is later than the cut-off time of the time domain resource occupied by the first channel information, the starting time of the time domain resource occupied by the second channel information is later than the cut-off time of the time domain resource occupied by the first channel information, and the starting time of the time domain resource occupied by the sixth channel information is later than the cut-off time of the time domain resource occupied by the second channel information.

Example 13

Embodiment 13 illustrates a schematic diagram of a time sequence relationship of the first information, the first channel information, the second channel information, the fourth channel information, and the sixth channel information in a time domain, as shown in fig. 13.

In embodiment 13, time domain resources occupied by the first information, the first channel information, the second channel information, the fourth channel information, and the sixth channel information are mutually orthogonal (non-overlapping) in pairs.

The starting time of the time domain resource occupied by the first channel information is later than the cut-off time of the time domain resource occupied by the first channel information, the starting time of the time domain resource occupied by the second channel information is later than the cut-off time of the time domain resource occupied by the first channel information, the starting time of the time domain resource occupied by the fourth channel information is later than the cut-off time of the time domain resource occupied by the second channel information, and the starting time of the time domain resource occupied by the sixth channel information is later than the cut-off time of the time domain resource occupied by the fourth channel information.

Example 14

Embodiment 14 illustrates a schematic diagram of a time sequence relationship of the first information, the first channel information, the second channel information, the fourth channel information, and the sixth channel information in the time domain, as shown in fig. 14.

In embodiment 14, the time domain resources occupied by the first information, the first channel information, the second channel information, and the fourth channel information are mutually orthogonal (non-overlapping) in pairs, and the sixth channel information and the fourth channel information occupy the same time domain resource.

The starting time of the time domain resource occupied by the first channel information is later than the cut-off time of the time domain resource occupied by the first channel information, the starting time of the time domain resource occupied by the second channel information is later than the cut-off time of the time domain resource occupied by the first channel information, and the starting time of the time domain resource occupied by the fourth channel information is later than the cut-off time of the time domain resource occupied by the second channel information.

Example 15

Embodiment 15 illustrates a schematic diagram of a time-series relationship of the first information, the third channel information, the fifth channel information, and the seventh channel information in a time domain, as shown in fig. 15.

In embodiment 15, the time domain resources occupied by the first information, the third channel information, and the seventh channel information are mutually orthogonal (non-overlapping) in pairs, and the fifth channel information and the third channel information occupy the same time domain resource. The starting time of the time domain resource occupied by the third channel information is later than the ending time of the time domain resource occupied by the first channel information, and the starting time of the time domain resource occupied by the seventh channel information is later than the ending time of the time domain resource occupied by the third channel information.

As a sub-embodiment, the third channel information and the fifth channel information are carried by the same physical layer signaling.

As a sub-embodiment, the third channel information and the fifth channel information are transmitted on the same physical layer channel.

As a sub-embodiment, the first information, the third channel information and the seventh channel information are respectively carried by different physical layer signaling.

As a sub-embodiment, the first information, the third channel information and the seventh channel information are transmitted on different physical layer channels, respectively.

Example 16

Embodiment 16 illustrates a schematic diagram of a time-series relationship of the first information, the third channel information, the fifth channel information, and the seventh channel information in a time domain, as shown in fig. 16.

In embodiment 16, the time domain resources occupied by the first information, the third channel information, and the fifth channel information are mutually orthogonal (non-overlapping) in pairs, and the seventh channel information and the fifth channel information occupy the same time domain resource.

The starting time of the time domain resource occupied by the third channel information is later than the ending time of the time domain resource occupied by the first channel information, and the starting time of the time domain resource occupied by the fifth channel information is later than the ending time of the time domain resource occupied by the third channel information.

Example 17

Embodiment 17 illustrates a schematic diagram of a time-series relationship of the first information, the third channel information, the fifth channel information, and the seventh channel information in a time domain, as shown in fig. 17.

In embodiment 17, time domain resources occupied by the first information, the third channel information, the fifth channel information, and the seventh channel information are mutually orthogonal (non-overlapping) in pairs.

The starting time of the time domain resource occupied by the third channel information is later than the cut-off time of the time domain resource occupied by the first channel information, the starting time of the time domain resource occupied by the fifth channel information is later than the cut-off time of the time domain resource occupied by the third channel information, and the starting time of the time domain resource occupied by the seventh channel information is later than the cut-off time of the time domain resource occupied by the fifth channel information.

Example 18

Embodiment 18 is a block diagram illustrating a processing apparatus used in a user equipment, as shown in fig. 18. In fig. 18, the processing means 1800 in the user equipment mainly consists of a first receiving module 1801 and a first sending module 1802.

In embodiment 18, the first receiving module 1801 receives a first reference signal; a first transmitting module 1802 transmits first information, which is used to determine a first integer; the first sending module 1802 further sends first channel information and second channel information if the first integer is equal to 1; otherwise the first sending module 1802 also sends third channel information.

In embodiment 18, the first integer is greater than 0, the measurements for the first reference signal are used by the first transmit module 1802 to determine the first integer; the second channel information is used to determine L1 first class vectors, the first channel information is used to determine the L1, the third channel information is used to determine L2 first class vectors, the L1 and the L2 are positive integers, respectively, and the L1 is not greater than the L2.

As a sub-embodiment, the first receiving module 1801 further receives a second reference signal.

As a sub-embodiment, the first integer is equal to 1, and the first sending module 1802 further sends fourth channel information. Wherein the fourth channel information is used to determine K first coefficient groups, any one of the K first coefficient groups comprising a positive integer number of coefficients, any one of the K first coefficient groups being a positive real number; the K is equal to the first integer.

As a sub-embodiment, the measurements for the second reference signal are used by the first transmit module 1802 to determine the K first coefficient sets.

As a sub-embodiment, the first integer is greater than 1, and the first sending module 1802 further sends fifth channel information. Wherein the fifth channel information is used to determine K second coefficient groups; any one of the K second coefficient groups comprises a positive integer number of coefficients; any coefficient in the K second coefficient groups is a non-negative real number; the K is equal to the first integer.

As a sub-embodiment, the measurements for the second reference signal are used by the first transmit module 1802 to determine the K second coefficient sets.

As a sub-embodiment, the first receiving module 1801 further receives a third reference signal.

As a sub-embodiment, the first integer is equal to 1, and the first sending module 1802 further sends sixth channel information. Wherein the sixth channel information is used to determine K third coefficient sets, any one of the K third coefficient sets comprising positive integer coefficients, any one of the K third coefficient sets being a complex number.

As a sub-embodiment, the measurements for the third reference signal are used by the first transmit module 1802 to determine the K third coefficient sets.

As a sub-embodiment, the first integer is greater than 1, and the first sending module 1802 further sends seventh channel information. Wherein the seventh channel information is used to determine K fourth coefficient groups, any one of the K fourth coefficient groups comprising a positive integer number of coefficients, any one of the K fourth coefficient groups being a complex number.

As a sub-embodiment, the measurements for the third reference signal are used by the first transmit module 1802 to determine the K fourth coefficient sets.

As a sub embodiment, the first receiving module 1801 further receives a first signaling.

As a sub-embodiment, the first signaling is used by the first sending module 1802 to determine the L2.

As a sub-embodiment, the first signaling is used by the first sending module 1802 to determine at least one of { the L2, the first set of coefficients, the second set of coefficients }.

As a sub-embodiment, the first receiving module 1801 further receives a first wireless signal. Wherein K second class vectors are used to generate the first wireless signal.

As a sub-embodiment, the first integer is equal to 1, { the L1 first-type vectors, the K first coefficient groups, the K third coefficient groups } is used to determine the K second-type vectors.

As a sub-embodiment, the first integer is equal to 1, and the L1 first-type vectors and the K first coefficient groups are used to determine the K second-type vectors.

As a sub-embodiment, the first integer is equal to 1, and the L1 first-type vectors and the K third coefficient sets are used to determine the K second-type vectors.

As a sub-embodiment, the first integer is greater than 1, { the L2 first-type vectors, the K second coefficient groups, the K fourth coefficient groups } is used to determine the K second-type vectors.

As a sub-embodiment, the first integer is greater than 1, and the L2 first-type vectors and the K second coefficient groups are used to determine the K second-type vectors.

As a sub-embodiment, the first integer is greater than 1, and the L2 first-type vectors and the K fourth coefficient groups are used to determine the K second-type vectors.

As a sub-embodiment, the first receiving module 1801 includes at least one of the receiving processor 456 and the controller/processor 459 in embodiment 4.

As a sub-embodiment, the first sending module 1802 includes at least one of the transmit processor 468 and the controller/processor 459 of embodiment 4.

Example 19

Embodiment 19 is a block diagram illustrating a processing apparatus used in a base station, as shown in fig. 19. In fig. 19, a processing apparatus 1900 in a base station is mainly composed of a second transmitting module 1901 and a second receiving module 1902.

In embodiment 19, the second transmitting module 1901 transmits a first reference signal; the second receiving module 1902 receives first information, which is used by the second receiving module 1902 to determine a first integer; the second receiving module 1902 further receives first channel information and second channel information if the first integer is equal to 1; otherwise, the second receiving module 1902 further receives third channel information.

In embodiment 19, the first integer is greater than 0, the measurement for the first reference signal is used to determine the first integer; the second channel information is used by the second receiving module 1902 to determine L1 first-class vectors, the first channel information is used by the second receiving module 1902 to determine the L1, the third channel information is used by the second receiving module 1902 to determine L2 first-class vectors, the L1 and the L2 are positive integers, respectively, and the L1 is not greater than the L2.

As a sub-embodiment, the second sending module 1901 also sends a second reference signal.

As a sub-embodiment, the first integer is equal to 1, and the second receiving module 1902 further receives fourth channel information. Wherein the fourth channel information is used by the second receiving module 1902 to determine K first coefficient groups, any one of the K first coefficient groups comprising a positive integer number of coefficients, any one of the K first coefficient groups being a positive real number, and K being equal to the first integer.

As a sub-embodiment, measurements for the second reference signal are used to determine the K first coefficient sets.

As a sub-embodiment, the first integer is greater than 1, and the second receiving module 1902 further receives fifth channel information. Wherein the fifth channel information is used by the second receiving module 1902 to determine K second coefficient groups, any one of the K second coefficient groups comprising a positive integer number of coefficients, any one of the K second coefficient groups being a non-negative real number, the K being equal to the first integer.

As a sub-embodiment, measurements for the second reference signal are used to determine the K second coefficient sets.

As a sub-embodiment, the second sending module 1901 also sends a third reference signal.

As a sub-embodiment, the first integer is equal to 1, and the second receiving module 1902 further receives sixth channel information. The sixth channel information is used by the second receiving module 1902 to determine K third coefficient sets, where any one of the K third coefficient sets includes positive integer coefficients, and any one of the K third coefficient sets is a complex number.

As a sub-embodiment, measurements for the third reference signal are used to determine the K third coefficient sets.

As a sub embodiment, the first integer is greater than 1, and the second receiving module 1902 further receives seventh channel information. Wherein the seventh channel information is used by the second receiving module 1902 to determine K fourth coefficient groups, any one of the K fourth coefficient groups including a positive integer number of coefficients, and any one of the K fourth coefficient groups being a complex number.

As a sub-embodiment, measurements for the third reference signal are used to determine the K fourth coefficient sets.

As a sub embodiment, the second sending module 1901 also sends the first signaling.

As a sub-embodiment, the first signaling is used to determine the L2.

As a sub-embodiment, the first signaling is used to determine at least one of { the L2, the first set of coefficients, the second set of coefficients }.

As a sub-embodiment, the second sending module 1901 further sends a first wireless signal, wherein the K vectors of the second class are used by the second sending module 1901 to generate the first wireless signal.

As a sub-embodiment, the first integer is equal to 1, { the L1 first-type vectors, the K first coefficient groups, the K third coefficient groups } are used by the second sending module 1901 to determine the K second-type vectors.

As a sub-embodiment, the first integer is equal to 1, and the L1 first-type vectors and the K first coefficient groups are used by the second sending module 1901 to determine the K second-type vectors.

As a sub-embodiment, the first integer is equal to 1, and the L1 first-type vectors and the K third coefficient sets are used by the second sending module 1901 to determine the K second-type vectors.

As a sub-embodiment, the first integer is greater than 1, { the L2 first-type vectors, the K second coefficient groups, the K fourth coefficient groups } is used by the second sending module 1901 to determine the K second-type vectors.

As a sub-embodiment, the first integer is greater than 1, and the L2 first-type vectors and the K second coefficient groups are used by the second sending module 1901 to determine the K second-type vectors.

As a sub-embodiment, the first integer is greater than 1, and the L2 first-type vectors and the K fourth coefficient groups are used by the second sending module 1901 to determine the K second-type vectors.

As a sub-embodiment, the second sending module 1901 includes at least one of the transmit processor 416 and the controller/processor 475 of embodiment 4.

As a sub-embodiment, the second receiving module 1902 includes at least one of the receiving processor 470 and the controller/processor 475 of embodiment 4.

It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a hard disk or an optical disk. Alternatively, all or part of the steps of the above embodiments may be implemented by using one or more integrated circuits. Accordingly, the module units in the above embodiments may be implemented in a hardware form, or may be implemented in a form of software functional modules, and the present application is not limited to any specific form of combination of software and hardware. UE and terminal in this application include but not limited to unmanned aerial vehicle, Communication module on the unmanned aerial vehicle, remote control plane, the aircraft, small aircraft, the cell-phone, the panel computer, the notebook, vehicle-mounted Communication equipment, wireless sensor, network card, thing networking terminal, the RFID terminal, NB-IOT terminal, MTC (Machine Type Communication ) terminal, eMTC (enhanced MTC) terminal, the data card, network card, vehicle-mounted Communication equipment, low-cost cell-phone, equipment such as low-cost panel computer. The base station in the present application includes, but is not limited to, a macro cell base station, a micro cell base station, a home base station, a relay base station, and other wireless communication devices.

The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

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

-receiving a first reference signal;

-sending first information, said first information being used by a target recipient of said first information to determine a first integer;

wherein the first integer is greater than 0, the measurement for the first reference signal being used by the user equipment to determine the first integer; the second channel information is used by a target recipient of the first information to determine L1 first class vectors, the first channel information is used by a target recipient of the first information to determine the L1, the third channel information is used by a target recipient of the first information to determine L2 first class vectors, the L1 and the L2 are positive integers, respectively, the L1 is not greater than the L2; the value of L2 is preset, or the value of L2 is configured in advance by higher layer signaling.

2. The method of claim 1, comprising:

-receiving a second reference signal;

-if said first integer is equal to 1, transmitting fourth channel information; otherwise, sending fifth channel information;

wherein the fourth channel information is used to determine K first coefficient groups and the fifth channel information is used to determine K second coefficient groups; any one of the K first coefficient groups comprises a positive integer number of coefficients, and any one of the K second coefficient groups comprises a positive integer number of coefficients; any coefficient in the K first coefficient groups and the K second coefficient groups is a non-negative real number; the measurements for the second reference signal are used to determine at least one of { the K first coefficient sets, the K second coefficient sets }; the K is equal to the first integer.

3. The method of claim 2, wherein any coefficient in the K first coefficient groups belongs to a first coefficient set, and wherein any coefficient in the K second coefficient groups belongs to a second coefficient set; the first and second sets of coefficients each comprise a positive integer number of coefficients; the first set of coefficients does not include 0 and the second set of coefficients includes 0.

4. A method according to claim 2 or 3, comprising:

-receiving a third reference signal;

-if said first integer is equal to 1, transmitting sixth channel information; otherwise, sending the seventh channel information;

wherein the sixth channel information is used to determine K third coefficient groups and the seventh channel information is used to determine K fourth coefficient groups; any one of the K third coefficient groups comprises a positive integer number of coefficients, and any one of the K fourth coefficient groups comprises a positive integer number of coefficients; any coefficient in the K third coefficient groups and the K fourth coefficient groups is a complex number; measurements for the third reference signal are used to determine at least one of the K third coefficient sets, the K fourth coefficient sets.

5. A method according to any one of claims 1 to 3, characterized by the steps of:

-receiving a first signaling;

wherein the first signaling is used to determine the L2.

6. The method of claim 4, comprising the steps of:

-receiving a first wireless signal;

wherein K second class vectors are used to generate the first wireless signal, if the first integer is equal to 1, at least one of the L1 first class vectors and { the K first coefficient sets, the K third coefficient sets } is used to determine the K second class vectors; otherwise at least one of the L2 vectors of the first type and { the K second coefficient sets, the K fourth coefficient sets } is used to determine the K vectors of the second type.

7. A method in a base station used for wireless communication, comprising:

-transmitting a first reference signal;

-receiving first information, the first information being used by the base station for determining a first integer;

wherein the first integer is greater than 0, the measurement for the first reference signal being used by a sender of the first information to determine the first integer; the second channel information is used by the base station to determine L1 first class vectors, the first channel information is used by the base station to determine the L1, the third channel information is used by the base station to determine L2 first class vectors, the L1 and the L2 are positive integers, respectively, the L1 is not greater than the L2; the value of L2 is preset, or the value of L2 is configured in advance by higher layer signaling.

8. The method of claim 7, comprising:

-transmitting a second reference signal;

-receiving fourth channel information if said first integer is equal to 1; otherwise, receiving fifth channel information;

9. The method of claim 8, wherein any coefficient in the K first coefficient groups belongs to a first coefficient set, and wherein any coefficient in the K second coefficient groups belongs to a second coefficient set; the first and second sets of coefficients each comprise a positive integer number of coefficients; the first set of coefficients does not include 0 and the second set of coefficients includes 0.

10. A method as claimed in claim 8 or 9, comprising:

-transmitting a third reference signal;

-receiving sixth channel information if said first integer is equal to 1; otherwise, receiving seventh channel information;

11. Method according to any of claims 7 to 9, characterized in that it comprises the following steps:

-transmitting first signalling;

wherein the first signaling is used to determine the L2.

12. The method of claim 10, comprising the steps of:

-transmitting a first wireless signal;

13. User equipment configured for wireless communication, comprising:

a first receiving module, which receives a first reference signal;

a first sending module that sends first information, the first information being used by a target recipient of the first information to determine a first integer; if the first integer is equal to 1, the first sending module also sends first channel information and second channel information; otherwise, the first sending module also sends third channel information;

14. The UE of claim 13, wherein the first receiving module further receives a second reference signal; if the first integer is equal to 1, the first sending module sends fourth channel information, otherwise, the first sending module sends fifth channel information; wherein the fourth channel information is used to determine K first coefficient groups and the fifth channel information is used to determine K second coefficient groups; any one of the K first coefficient groups comprises a positive integer number of coefficients, and any one of the K second coefficient groups comprises a positive integer number of coefficients; any coefficient in the K first coefficient groups and the K second coefficient groups is a non-negative real number; the measurements for the second reference signal are used to determine at least one of { the K first coefficient sets, the K second coefficient sets }; the K is equal to the first integer.

15. The user device of claim 14, wherein any coefficient of the K first coefficient groups belongs to a first coefficient set, and wherein any coefficient of the K second coefficient groups belongs to a second coefficient set; the first and second sets of coefficients each comprise a positive integer number of coefficients; the first set of coefficients does not include 0 and the second set of coefficients includes 0.

16. The UE of claim 14 or 15, wherein the first receiving module further receives a third reference signal; if the first integer is equal to 1, the first sending module also sends sixth channel information; otherwise, sending the seventh channel information; wherein the sixth channel information is used to determine K third coefficient groups and the seventh channel information is used to determine K fourth coefficient groups; any one of the K third coefficient groups comprises a positive integer number of coefficients, and any one of the K fourth coefficient groups comprises a positive integer number of coefficients; any coefficient in the K third coefficient groups and the K fourth coefficient groups is a complex number; measurements for the third reference signal are used to determine at least one of the K third coefficient sets, the K fourth coefficient sets.

17. The user equipment according to any of claims 13 to 15, wherein the first receiving module further receives a first signaling; wherein the first signaling is used to determine the L2.

18. The UE of claim 16, wherein the first receiving module further receives a first wireless signal; wherein K second class vectors are used to generate the first wireless signal, if the first integer is equal to 1, at least one of the L1 first class vectors and { the K first coefficient sets, the K third coefficient sets } is used to determine the K second class vectors; otherwise at least one of the L2 vectors of the first type and { the K second coefficient sets, the K fourth coefficient sets } is used to determine the K vectors of the second type.

19. A base station apparatus used for wireless communication, comprising:

the second sending module is used for sending the first reference signal;

a second receiving module, configured to receive first information, where the first information is used by the base station device to determine a first integer; if the first integer is equal to 1, the second receiving module also receives first channel information and second channel information; otherwise, the second receiving module also receives third channel information;

wherein the first integer is greater than 0, the measurement for the first reference signal being used by a sender of the first information to determine the first integer; the second channel information is used by the base station apparatus to determine L1 first class vectors, the first channel information is used by the base station apparatus to determine the L1, the third channel information is used by the base station apparatus to determine L2 first class vectors, the L1 and the L2 are positive integers, respectively, the L1 is not greater than the L2; the value of L2 is preset, or the value of L2 is configured in advance by higher layer signaling.

20. The base station apparatus as claimed in claim 19, wherein said second transmitting module further transmits a second reference signal; receiving fourth channel information if the first integer is equal to 1; otherwise, receiving fifth channel information; wherein the fourth channel information is used to determine K first coefficient groups and the fifth channel information is used to determine K second coefficient groups; any one of the K first coefficient groups comprises a positive integer number of coefficients, and any one of the K second coefficient groups comprises a positive integer number of coefficients; any coefficient in the K first coefficient groups and the K second coefficient groups is a non-negative real number; the measurements for the second reference signal are used to determine at least one of { the K first coefficient sets, the K second coefficient sets }; the K is equal to the first integer.

21. The base station apparatus according to claim 20, wherein any coefficient in the K first coefficient groups belongs to a first coefficient set, and any coefficient in the K second coefficient groups belongs to a second coefficient set; the first and second sets of coefficients each comprise a positive integer number of coefficients; the first set of coefficients does not include 0 and the second set of coefficients includes 0.

22. The base station device of claim 20 or 21, wherein the second transmitting module further transmits a third reference signal; receiving sixth channel information if the first integer is equal to 1; otherwise, receiving seventh channel information; wherein the sixth channel information is used to determine K third coefficient groups and the seventh channel information is used to determine K fourth coefficient groups; any one of the K third coefficient groups comprises a positive integer number of coefficients, and any one of the K fourth coefficient groups comprises a positive integer number of coefficients; any coefficient in the K third coefficient groups and the K fourth coefficient groups is a complex number; measurements for the third reference signal are used to determine at least one of the K third coefficient sets, the K fourth coefficient sets.

23. The base station device according to any of claims 19 to 21, wherein said second sending module further sends a first signaling; wherein the first signaling is used to determine the L2.

24. The base station device of claim 22, wherein the second transmitting module further transmits a first wireless signal; wherein K second class vectors are used to generate the first wireless signal, if the first integer is equal to 1, at least one of the L1 first class vectors and { the K first coefficient sets, the K third coefficient sets } is used to determine the K second class vectors; otherwise at least one of the L2 vectors of the first type and { the K second coefficient sets, the K fourth coefficient sets } is used to determine the K vectors of the second type.