CN109302221B

CN109302221B - User equipment, base station and corresponding method used for wireless communication

Info

Publication number: CN109302221B
Application number: CN201710612305.1A
Authority: CN
Inventors: 吴克颖
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2017-07-25
Filing date: 2017-07-25
Publication date: 2020-10-02
Anticipated expiration: 2037-07-25
Also published as: CN109302221A

Abstract

The application discloses a method and a device used in a user and a base station of wireless communication. The user equipment transmits a first reference signal and then transmits a first wireless signal. Wherein the first reference signal and the first wireless signal are transmitted by K antenna ports and K1 antenna ports, respectively; if the K is not greater than a first threshold, any of the K1 antenna ports is one of the K antenna ports, otherwise at least one of the K1 antenna ports is associated with multiple of the K antenna ports; the K is a positive integer, the K1 is a positive integer not greater than the K, and the first threshold is a positive integer. The above method allows the user equipment to determine whether the first reference signal is used for codebook-based uplink transmission or codebook-not-based uplink transmission according to the K, thereby optimizing the first reference signal in a corresponding manner.

Description

User equipment, base station and corresponding method used for 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

According to the discussion of 3GPP (3rd generation partner Project) RAN (Radio access Network ) WG (Working Group) 1, the NR (New Radio) system will support codebook (codebook) based and codebook (non-codebook) based uplink transmissions.

Disclosure of Invention

The inventor finds, through research, that requirements of codebook-based and non-codebook-based uplink transmissions on uplink reference signals are different, and a UE (User Equipment) needs to know whether the transmitted uplink reference signal is to be used for codebook-based uplink transmission or non-codebook-based uplink transmission when transmitting the uplink reference signal.

In view of the above, the present application discloses a solution. 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:

-transmitting a first reference signal;

-transmitting a first wireless signal;

wherein the first reference signal and the first wireless signal are transmitted by K antenna ports and K1 antenna ports, respectively; if the K is not greater than a first threshold, any of the K1 antenna ports is one of the K antenna ports, otherwise at least one of the K1 antenna ports is associated with multiple of the K antenna ports; the K is a positive integer, the K1 is a positive integer not greater than the K, and the first threshold is a positive integer.

As an embodiment, the method is characterized by allowing the ue to adopt different methods to optimize the multi-antenna related transmission of the first reference signal when the first radio signal adopts different uplink transmission modes. When the first wireless signal employs codebook-based uplink transmission, a precoding matrix of the first wireless signal is determined by a target recipient of the first wireless signal from measurements for the first reference signal; when the first wireless signal employs codebook-free uplink transmission, the precoding matrix for the first wireless signal is selected by a target recipient of the first wireless signal from a plurality of candidate matrices based on measurements for the first reference signal, the plurality of candidate matrices being self-determined by the user equipment and unknown to the target recipient of the first wireless signal. Therefore, the multi-antenna related transmission of the first reference signal may be different according to different uplink transmission modes of the first radio signal, and the user equipment needs to know the uplink transmission mode in advance to perform corresponding optimization on the multi-antenna related transmission of the first reference signal.

As an embodiment, the above method has a benefit that the user equipment may determine whether the first reference signal is used for codebook-based uplink transmission or codebook-not-based uplink transmission according to the number of antenna ports for transmitting the first reference signal, so as to optimize multi-antenna-related transmission of the first reference signal according to a specific uplink transmission mode.

As an embodiment, the above method has a benefit in that signaling overhead is saved by implicitly indicating whether the first reference signal is used for codebook-based uplink transmission or codebook-not-based uplink transmission through the K.

As an embodiment, the K not greater than the first threshold means: the K is less than or equal to the first threshold.

As an embodiment, the first threshold is a sum of a maximum number of streams (layer) of uplink transmission that the user equipment can support and a second threshold, and the second threshold is a non-negative integer.

As an embodiment, the maximum number of streams (layers) of uplink transmission that the user equipment can support is a positive integer no greater than 8.

As an embodiment, the second threshold is equal to 0.

As one embodiment, the second threshold is greater than 0.

As an embodiment, the first threshold is preconfigured by higher layer signaling.

As an embodiment, an antenna port is formed by superimposing a plurality of antennas through antenna Virtualization (Virtualization), and mapping coefficients of the plurality of antennas to the antenna port form a beamforming vector of the antenna port.

As an embodiment, if K is not greater than the first threshold, all of the K antenna ports are assumed to be superimposed by antenna virtualization by the same antenna, otherwise all of the K antenna ports cannot be assumed to be superimposed by antenna virtualization by the same antenna.

As an embodiment, if any one of the K1 antenna ports is one of the K antenna ports, it means that: a beamforming vector corresponding to any one of the K1 antenna ports is the same as a beamforming vector corresponding to one of the K antenna ports.

For one embodiment, the K is not greater than the first threshold, and the K1 antenna ports are a subset of the K antenna ports.

As an embodiment, a target antenna port is related to K2 antenna ports, the target antenna port is one of the K1 antenna ports, the K2 antenna ports are a subset of the K antenna ports, the K is a positive integer greater than 1, the K2 is a positive integer greater than 1 and not greater than K.

As an embodiment, the target antenna port is formed by overlapping all antennas included in the K2 antenna ports through antenna Virtualization (Virtualization), and mapping coefficients of all antennas included in the K2 antenna ports to the target antenna port form a beamforming vector of the target antenna port.

As one embodiment, the beamforming vector for the target antenna port is generated by a product of a first matrix and a first vector. Mapping coefficients of K2 antenna groups to the target antenna port form the first vector, and corresponding beamforming vectors of the K2 antenna ports are arranged diagonally to form the first matrix; the K2 antenna groups are respectively composed of antennas included in the K2 antenna ports.

As one example, the K2 is equal to the K.

As one example, the K2 is less than the K.

For one embodiment, if the K is greater than the first threshold, any one of the K1 antenna ports is associated with a plurality of the K antenna ports.

As one embodiment, the first Reference Signal includes an SRS (Sounding Reference 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 one embodiment, the first reference signal is narrowband.

As an embodiment, the first reference signal is present only on a partial frequency domain region of the positive integer number of frequency domain regions.

As an embodiment, the first reference signal occurs only once in the time domain.

As an embodiment, the first reference signal occurs multiple times in the time domain.

As one embodiment, the first reference signal is non-periodic (aperiodic).

As one embodiment, the first reference signal is periodic (periodic).

As an embodiment, the first reference signal is semi-static.

As an embodiment, the first reference signal includes K first sub-signals, and the K first sub-signals are respectively transmitted by the K antenna ports.

As an embodiment, the time-frequency resources occupied by the K first sub-signals are mutually orthogonal (non-overlapping) by two.

As an embodiment, the time domain resources occupied by the K first sub-signals are mutually orthogonal (non-overlapping) two by two.

As an embodiment, at least two first sub-signals of the K first sub-signals occupy the same time domain resource.

As an embodiment, the code domain resources occupied by the K first sub-signals are mutually orthogonal pairwise.

As an embodiment, at least two first sub-signals of the K first sub-signals occupy the same time-frequency resource.

As an embodiment, the first wireless signal includes K1 wireless sub-signals, and the K1 wireless sub-signals are respectively transmitted by the K1 antenna ports.

As an embodiment, the time-frequency resources occupied by the K1 wireless sub-signals are the same.

As an embodiment, at least two of the K1 wireless sub-signals occupy orthogonal (non-overlapping) time-frequency resources.

As an embodiment, the frequency domain resources occupied by the first radio signal belong to the frequency domain resources occupied by the first reference signal.

As an embodiment, the frequency domain resources occupied by the first wireless signal are a portion of the frequency domain resources occupied by the first reference signal.

As one embodiment, the first wireless signal and the first reference signal occupy the same frequency domain resources.

As an embodiment, the measurement for the first reference signal is used to determine a Modulation and Coding Scheme (MCS) of the first wireless signal.

As an embodiment, the K is not greater than a first threshold, the K1 antenna ports are a subset of the K antenna ports, measurements for K1 first sub-signals are used to determine the MCS of the K1 wireless sub-signals, respectively, the K1 first sub-signals are a subset of the K first sub-signals, and the K1 first sub-signals are transmitted by the K1 antenna ports, respectively.

As an embodiment, the measurements for the K first sub-signals are used for determining K reception qualities, respectively, and the reception quality corresponding to any one of the K1 first sub-signals is higher than the reception quality corresponding to any one of the K first sub-signals not belonging to the K1 first sub-signals.

As an embodiment, any one of the K reception qualities is RSRP (reference signal received power).

As an embodiment, any one of the K reception qualities is RSRQ (referred signal Received Quality).

As an embodiment, any one of the K reception qualities is a CQI (Channel quality indicator).

As an embodiment, the reception qualities corresponding to the K1 first sub-signals are respectively used to determine the MCS of the K1 wireless sub-signals.

As an embodiment, a target wireless sub-signal belongs to the K1 wireless sub-signals, the target wireless sub-signal being transmitted by the target antenna port, measurements for K2 first sub-signals being used to determine the MCS of the target wireless sub-signal, the K2 first sub-signals being a subset of the K first sub-signals, the K2 first sub-signals being transmitted by the K2 antenna ports, respectively.

As an example, the first wireless signal 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 uplink Physical layer data channel is a PUSCH (Physical uplink link shared channel).

As an embodiment, the uplink physical layer data channel is sPUSCH (short PUSCH).

As an embodiment, the uplink physical layer data channel is NR-PUSCH (New radio PUSCH).

As an embodiment, the uplink physical layer data channel is NB-PUSCH (narrowband PUSCH).

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

As an embodiment, the uplink Physical layer control channel is a PUCCH (Physical uplink control channel).

As an embodiment, the uplink physical layer control channel is sPUCCH (short PUCCH ).

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

In one embodiment, the uplink physical layer control channel is an NB-PUCCH (NarrowBand PUCCH).

As one example, K is a positive integer greater than 1.

As one example, the K1 is less than the K.

As one example, the K1 is equal to the K.

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

-receiving a first signaling;

wherein the first signaling comprises a first type of scheduling information of the first wireless signal; if the K is greater than the first threshold, the first signaling comprises a first domain, otherwise the first signaling does not comprise a first domain; the first field includes a precoding matrix identification.

As an embodiment, the precoding Matrix indicator is a pmi (precoder Matrix indicator).

As an embodiment, the Precoding matrix indicator is tpmi (transmitted Precoding matrix indicator).

For one embodiment, the first field includes a positive integer number of bits.

For one embodiment, the first field includes 2 bits.

For one embodiment, the first field includes 3 bits.

For one embodiment, the first field includes 4 bits.

For one embodiment, the first field includes 5 bits.

For one embodiment, the first field includes 6 bits.

For one embodiment, the first field includes a number of bits that is independent of the value of K1.

As an embodiment, the first field in the first signaling is used to determine the K1 antenna ports.

As an embodiment, the first field in the first signaling is used to determine a beamforming vector corresponding to any one of the K1 antenna ports.

As an embodiment, the first field in the first signaling is used to determine at least one of the K1 antenna ports.

As an embodiment, the first field in the first signaling is used to determine a beamforming vector corresponding to at least one antenna port of the K1 antenna ports.

As one embodiment, the first field in the first signaling is used to determine the first vector.

As one embodiment, the first field in the first signaling indicates the first vector.

As one embodiment, the first vector belongs to N candidate vectors, the first field in the first signaling indicates an index of the first vector among the N candidate vectors, the N being a positive integer greater than 1.

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

As an embodiment, the first signaling is dynamic signaling.

As an embodiment, the first signaling is dynamic signaling for UpLink Grant (UpLink Grant).

As an embodiment, the first type of scheduling information includes at least one of { occupied time domain resource, occupied frequency domain resource, MCS (Modulation and Coding Scheme ), HARQ (Hybrid automatic repeat reQuest) process number, RV (Redundancy Version), NDI (New Data Indicator), occupied antenna port, corresponding transmit beamforming vector, and corresponding transmit spatial filtering (spatial filtering) }.

As one embodiment, a payload size (payload size) of the first signaling is different when the K is greater than the first threshold and when the K is not greater than the first threshold.

As an embodiment, the user equipment determines the payload size of the first signaling according to whether the K is greater than the first threshold.

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 an embodiment, the downlink Physical layer control CHannel is a PDCCH (Physical downlink control CHannel).

As an embodiment, the downlink physical layer control channel is a short PDCCH (short PDCCH).

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

As an embodiment, the downlink physical layer control channel is an NB-PDCCH (NarrowBand PDCCH).

-receiving first downlink information;

wherein the first downlink information is used to determine a second type of scheduling information for the first reference signal.

As an embodiment, the second type of scheduling information includes at least one of { occupied time domain resource, occupied frequency domain resource, occupied Code domain resource, cyclic shift amount (cyclic shift), OCC (Orthogonal Code), occupied antenna port, corresponding transmit beamforming vector, and corresponding transmit spatial filtering }.

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

As an embodiment, the first downlink information is carried by RRC (Radio Resource Control) signaling.

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

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

As an embodiment, the downlink Physical layer data CHannel is a PDSCH (Physical downlink shared CHannel).

As an embodiment, the downlink physical layer data channel is sPDSCH (short PDSCH).

As an embodiment, the downlink physical layer data channel is NR-PDSCH (new radio PDSCH).

As an embodiment, the downlink physical layer data channel is NB-PDSCH (NarrowBand PDSCH).

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

As an embodiment, physical layer signaling carrying the first downlink information is used to trigger the sending of the first reference signal.

As an embodiment, the second type scheduling information of the first reference signal is one of T1 second type scheduling information, and the first downlink information is used to determine the second type scheduling information of the first reference signal from the T1 second type scheduling information.

As an embodiment, the first downlink information indicates an index of the second type scheduling information of the first reference signal among the T1 second type scheduling information.

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

As an embodiment, the downlink physical layer control channel is a PDCCH.

As an embodiment, the downlink physical layer control channel is sPDCCH.

As an embodiment, the downlink physical layer control channel is an NR-PDCCH.

In one embodiment, the downlink physical layer control channel is an NB-PDCCH.

-receiving second downlink information;

wherein the second downlink information is used to determine the first threshold.

As an embodiment, the second downlink information is carried by higher layer signaling.

As an embodiment, the second downlink information is carried by RRC signaling.

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

As an embodiment, the downlink physical layer data channel is a PDSCH.

As an embodiment, the downlink physical layer data channel is sPDSCH.

As an embodiment, the downlink physical layer data channel is a NR-PDSCH.

As an embodiment, the downlink physical layer data channel is an NB-PDSCH.

As one embodiment, the first threshold is semi-static (semi-static) configured.

As an embodiment, the first threshold is UE (User Equipment) -specific.

Specifically, according to an aspect of the present application, the first signaling includes at least one of { a second domain, a third domain }, the second domain includes a rank indicator, and the third domain includes a reference signal resource indicator.

As an embodiment, the rank indicator is ri (rank indicator).

As an embodiment, the reference signal resource identifier is an SRI (sounding reference signal resource identifier).

As an embodiment, the reference signal Resource identifier is a CRI (Channel-state information reference signal Resource identifier).

As an embodiment, the second and third fields each include a positive integer number of bits.

As an embodiment, the number of bits comprised by the third field is independent of the value of the second field.

As an example, the third field comprises a number of bits independent of the value of K1.

As an embodiment, at least one of the second domain in the first signaling and the third domain in the first signaling is used to determine the K1 antenna ports from the K antenna ports, the K being not greater than the first threshold.

As an embodiment, at least one of the second domain in the first signaling and the third domain in the first signaling is used to determine an index of each of the K1 antenna ports among the K antenna ports, the K being not greater than the first threshold.

As an embodiment, the second field in the first signaling is used to determine the K1.

As an embodiment, the third field in the first signaling is used to determine an index of each of the K1 antenna ports among the K antenna ports, the K being not greater than the first threshold.

As an embodiment, a beamforming vector corresponding to an antenna port is formed by a product of an analog beamforming matrix and a digital beamforming vector.

As an embodiment, one antenna port is formed by overlapping antennas in a positive integer number of antenna groups through antenna Virtualization (Virtualization), and one antenna group includes a positive integer number of antennas. One antenna group is connected to the baseband processor through one RF (Radio Frequency) chain, and different antenna groups correspond to different rfchains. And the mapping coefficients of a plurality of antennas included in any one antenna group in the positive integer number of antenna groups to the antenna ports form an analog beamforming vector of the antenna group. And the corresponding analog beamforming vectors of the positive integer number of antenna groups are arranged diagonally to form an analog beamforming matrix of the antenna port. The positive integer number of antenna group to antenna port mapping coefficients constitute a digital beamforming vector for the antenna port.

As an embodiment, all antenna groups included in one antenna port correspond to the same analog beamforming vector.

As an embodiment, an antenna port includes antenna groups, at least two of which correspond to different analog beamforming vectors.

As an embodiment, the K antenna ports are divided into M2 first antenna port groups, and any one of the M2 first antenna port groups includes a positive integer number of antenna ports; the K1 antenna ports are divided into M3 second antenna port groups, and any one of the M3 second antenna port groups comprises a positive integer number of antenna ports; the M3 second antenna port groups respectively correspond to M3 first antenna port groups one-to-one, and the M3 first antenna port groups are subsets of the M2 first antenna port groups. The M2 is a positive integer no greater than the K, the M3 is a positive integer no greater than the K1.

As an embodiment, any two antenna ports in any one of the M2 first antenna port groups are QCL (Quasi Co-Located).

As an embodiment, all antenna ports in any one of the M2 first antenna port groups correspond to the same analog beamforming matrix.

As an embodiment, any two of the M2 first antenna port groups correspond to different analog beamforming matrices.

As an embodiment, different antenna ports in any one of the M2 first antenna port groups correspond to different digital beamforming vectors.

As an embodiment, any two antenna ports of any one of the M3 second antenna port groups are QCL.

As an embodiment, all antenna ports in any one of the M3 second antenna port groups correspond to the same analog beamforming matrix.

As an embodiment, any two of the M3 second antenna port groups correspond to different analog beamforming matrices.

As an embodiment, different antenna ports in any one of the M3 second antenna port groups correspond to different digital beamforming vectors.

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 matrix.

As an embodiment, two antenna ports are QCL means: the analog beamforming vector corresponding to any antenna group in one antenna port and the analog beamforming vector corresponding to any antenna group in another antenna port are equal.

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 intended receiver of the first reference signal 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 intended receiver of the first reference signal may receive the wireless signals transmitted on the two antenna ports with the same analog beamforming vector.

As an embodiment, two antenna ports being of the QCL means: the intended receiver of the first reference signal may receive the wireless signals transmitted on both antenna ports with the same spatial filtering.

As an embodiment, any one antenna port in any one of the M3 second antenna port groups is one antenna port in a corresponding first antenna port group, and K is not greater than the first threshold.

As an embodiment, at least one antenna port in any one of the M3 second antenna port groups is associated with a plurality of antenna ports in a corresponding first antenna port group and is not associated with any antenna port in the K antenna ports that does not belong to the corresponding first antenna port group; the K is greater than the first threshold.

As an embodiment, at least one of the second domain in the first signaling and the third domain in the first signaling is used to determine the M3 first antenna port groups from the M2 first antenna port groups.

As an embodiment, at least one of the second domain in the first signaling and the third domain in the first signaling is used to determine an index of each of the M3 first antenna port groups in the M2 first antenna port groups.

As an embodiment, the second field in the first signaling is used to determine the M3.

As an embodiment, the third field in the first signaling is used to determine an index of each of the M3 first antenna port groups in the M2 first antenna port groups.

As one embodiment, the first signaling includes the second domain.

As one embodiment, the first signaling includes the third domain.

As an embodiment, the first signaling includes the second domain and the third domain.

For one embodiment, the third field includes a number of bits independent of the value of M3.

As an example, the third field comprises a number of bits related to the base 2 logarithm of the M2.

As an embodiment, the first field includes a number of bits related to a base-2 logarithm of a maximum number of antenna ports in the M2 first antenna groups.

As one example, the M2 is equal to the K.

As one example, the M2 is less than the K.

As an example, the M2 is equal to 1.

As one example, the M3 is equal to the K1.

As one embodiment, the M3 is less than the K1.

As an example, the M3 is equal to 1.

As one embodiment, the M2 is greater than the M3.

As one embodiment, the M2 is equal to the M3.

For one embodiment, the target antenna port is one antenna port of a target second antenna port group, the target second antenna port group being one antenna port group of the M3 second antenna port groups; the target first antenna port group is a first antenna port group corresponding to the target second antenna port group in the M3 first antenna port groups; the K2 antenna ports belong to the target first antenna port group.

-operating the second reference signal;

wherein the second reference signal is transmitted by M reference antenna port groups, any one of the M reference antenna port groups includes a positive integer number of antenna ports, and the second reference signal is used to determine the K antenna ports; the operation is a transmission or the operation is a reception; and M is a positive integer.

In one embodiment, the operation is transmitting and the second reference signal includes an SRS.

As an embodiment, the operation is receiving, and the second Reference Signal includes at least one of { CSI-RS (channel state Information-Reference Signal) }, DMRS (demodulation Reference Signals), TRS (fine/frequency tracking Reference Signals), PTRS (Phase error tracking Reference Signals), PSS (Primary synchronization Signal), SSS (Secondary synchronization Signal), PSSs (Primary link synchronization Signal), SSSs (Secondary link synchronization Signal).

As an embodiment, any two antenna ports in any of the M reference antenna port groups are QCL.

As an embodiment, beamforming vectors corresponding to antenna ports in the M reference antenna port groups are used to determine beamforming vectors corresponding to the K antenna ports, and the operation is transmission.

As an embodiment, the beamforming vectors corresponding to the antenna ports in the M reference antenna port groups are used to determine the beamforming vectors corresponding to the antenna ports in the M2 first antenna port groups, and the operation is transmitting.

As an embodiment, the measurements for the second reference signals are used to determine beamforming vectors corresponding to the K antenna ports, and the operation is receiving.

As an embodiment, the measurement for the second reference signal is used to determine a beamforming vector corresponding to an antenna port in the M2 first antenna port groups, and the operation is receiving.

As an embodiment, the M2 first antenna port groups respectively correspond to M2 reference antenna port groups one-to-one, and the M2 reference antenna port groups are subsets of the M reference antenna port groups.

As an embodiment, the second reference signal includes M second sub-signals, and the M second sub-signals are respectively transmitted by the M reference antenna port groups. The M2 second sub-signals are a subset of the M second sub-signals, the M2 second sub-signals being transmitted by the M2 reference antenna port groups, respectively.

As an embodiment, the measurements for the M second sub-signals are used to determine M reception qualities, respectively.

As an embodiment, the reception quality corresponding to any one of the M2 second sub-signals is greater than the reception quality corresponding to any one of the M2 second sub-signals that does not belong to the M2 second sub-signals.

As an embodiment, any one of the M reception qualities is RSRP (reference signal received power).

As an embodiment, any one of the M reception qualities is RSRQ (referred signal Received Quality).

As an embodiment, any one of the M reception qualities is a CQI (Channel quality indicator).

As an embodiment, M reference beamforming vectors respectively correspond to the M second sub-signals one to one, the M reference beamforming vectors respectively belong to a set of beamforming vectors, and the set of beamforming vectors includes a positive integer number of beamforming vectors. For any given second sub-signal of the M second sub-signals, the corresponding reference beamforming vector is a given reference beamforming vector. The reception quality obtained by the user equipment receiving the given second sub-signal with the given reference beamforming vector is higher than the reception quality obtained by the user equipment receiving the given second sub-signal with any beamforming vector other than the given reference beamforming vector in the set of beamforming vectors.

As an embodiment, the M reception qualities are reception qualities obtained by the ue receiving the M second sub-signals with the M reference beamforming vectors, respectively.

As an embodiment, the M2 reference beamforming vectors are reference beamforming vectors respectively corresponding to the M2 reference sub-signals among the M reference beamforming vectors.

As an embodiment, the reception quality obtained by the user equipment receiving the corresponding second sub-signal with any one of the M2 reference beamforming vectors is greater than the reception quality obtained by the user equipment receiving the corresponding second sub-signal with any one of the M reference beamforming vectors that does not belong to the M2 reference beamforming vectors.

As an embodiment, any antenna port in any one of the M2 first antenna port groups and any antenna port in a corresponding reference antenna port group are QCL, and the operation is transmission.

As an embodiment, the M2 reference beamforming vectors are respectively used as reception beamforming vectors for wireless signals transmitted on the M2 first antenna port group, and the operation is transmission.

As an embodiment, the M2 reference beamforming vectors are respectively used as reception analog beamforming vectors for wireless signals transmitted on the M2 first antenna port group, and the operation is transmission.

As an embodiment, the M2 reference beamforming vectors are respectively used to determine analog beamforming matrices corresponding to the M2 first antenna port groups, and the operation is receiving.

As an embodiment, the M2 reference beamforming vectors are respectively used as analog beamforming vectors corresponding to antenna groups in the M2 first antenna port groups, and the operation is receiving.

As an embodiment, the analog beamforming matrices corresponding to the M2 reference antenna port groups are respectively used to determine the receiving analog beamforming vectors of the wireless signals transmitted on the M2 first antenna port groups, and the operation is receiving.

As an embodiment, the analog beamforming vector corresponding to the antenna group in any one of the M2 reference antenna port groups is used as a receiving analog beamforming vector of the wireless signal transmitted on the corresponding first antenna port group, and the operation is receiving.

For one embodiment, the first downlink information is used to determine the M2 reference antenna port groups from the M reference antenna port groups.

As one embodiment, the first downlink information indicates an index of each of the M2 reference antenna port groups in the M reference antenna port groups.

-transmitting uplink information;

wherein the operation is reception, the uplink information is used to determine M1 reference antenna port groups, the M1 reference antenna port groups are a subset of the M reference antenna port groups, the M1 reference antenna port groups are used to determine the K antenna ports; the M1 is a positive integer no greater than the M.

For one embodiment, the M2 reference antenna port groups are a subset of the M1 reference antenna port groups.

As one embodiment, the M2 is equal to the M1.

As one embodiment, the M2 is less than the M1.

For one embodiment, the M1 second sub-signals are a subset of the M second sub-signals, and the M1 second sub-signals are transmitted by the M1 reference antenna port groups, respectively.

As an embodiment, the uplink information indicates an index of each of the M1 reference antenna port groups in the M reference antenna port groups.

As an embodiment, the uplink information is used to determine M1 reception qualities, and the M1 reception qualities are reception qualities corresponding to the M1 second sub-signals, respectively, of the M reception qualities.

As an embodiment, the reception quality corresponding to any one of the M1 second sub-signals is greater than the reception quality corresponding to any one of the M1 second sub-signals that does not belong to the M1 second sub-signals.

As an embodiment, the reception quality corresponding to any one of the M2 second sub-signals is greater than the reception quality corresponding to any one of the M1 second sub-signals that does not belong to the M2 second sub-signals.

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

As an embodiment, the uplink information includes one or more of { CSI, CRI, RSRP, RSRQ, CQI, PMI }.

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

As an embodiment, the uplink 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).

In one embodiment, the uplink physical layer control channel is a PUCCH.

As an embodiment, the uplink physical layer control channel is sPUCCH.

In one embodiment, the uplink physical layer control channel is an NR-PUCCH.

In one embodiment, the uplink physical layer control channel is an NB-PUCCH.

As an example, the uplink 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 uplink physical layer data channel is a PUSCH.

As an embodiment, the uplink physical layer data channel is a sPUSCH.

In one embodiment, the physical layer data channel is NR-PUSCH.

As an embodiment, the uplink physical layer data channel is NB-PUSCH.

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

-receiving a first reference signal;

-receiving a first wireless signal;

-transmitting first signalling;

-transmitting the first downlink information;

-transmitting second downlink information;

As one embodiment, the first threshold is semi-static (semi-static) configured.

As an embodiment, the first threshold is UE (User Equipment) -specific.

As an embodiment, the rank indicator is ri (rank indicator).

As an embodiment, the reference signal resource identifier is one of { SRI (sounding reference signal resource identifier), CRI (Channel-state information reference signal resource identifier) }.

-executing a second reference signal;

wherein the second reference signal is transmitted by M reference antenna port groups, any one of the M reference antenna port groups includes a positive integer number of antenna ports, and the second reference signal is used to determine the K antenna ports; the performing is receiving or the performing is transmitting; and M is a positive integer.

-receiving uplink information;

wherein the performing is transmitting, the uplink information is used to determine M1 reference antenna port groups, the M1 reference antenna port groups are a subset of the M reference antenna port groups, the M1 reference antenna port groups are used to determine the K antenna ports; the M1 is a positive integer no greater than the M.

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

a first transmitter module that transmits a first reference signal and a first wireless signal;

As an embodiment, the above user equipment for wireless communication is characterized in that the first signaling comprises at least one of { second domain, third domain }, the second domain comprises rank indication, and the third domain comprises reference signal resource indication.

As an embodiment, the user equipment used for wireless communication is characterized in that the first transmitter module further transmits a second reference signal. Wherein the second reference signal is transmitted by M reference antenna port groups, any one of the M reference antenna port groups includes a positive integer number of antenna ports, and the second reference signal is used to determine the K antenna ports; and M is a positive integer.

As an embodiment, the user equipment used for wireless communication is characterized in that the first transmitter module further transmits uplink information. Wherein the uplink information is used to determine M1 reference antenna port groups, the M1 reference antenna port groups being a subset of the M reference antenna port groups, the M1 reference antenna port groups being used to determine the K antenna ports; the M1 is a positive integer no greater than the M.

As an embodiment, the user equipment used for wireless communication described above is characterized by comprising:

a first receiver module to receive a first signaling;

As an embodiment, the above user equipment for wireless communication is characterized in that the first receiver module further receives first downlink information. Wherein the first downlink information is used to determine a second type of scheduling information for the first reference signal.

As an embodiment, the above user equipment for wireless communication is characterized in that the first receiver module further receives second downlink information. Wherein the second downlink information is used to determine the first threshold.

As an embodiment, the above user equipment for wireless communication is characterized in that the first receiver module further receives a second reference signal. Wherein the second reference signal is transmitted by M reference antenna port groups, any one of the M reference antenna port groups includes a positive integer number of antenna ports, and the second reference signal is used to determine the K antenna ports; and M is a positive integer.

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

a second receiver module that receives a first reference signal and a first wireless signal;

As an embodiment, the above base station apparatus for wireless communication is characterized in that the first signaling includes at least one of { second domain, third domain }, the second domain includes a rank indicator, and the third domain includes a reference signal resource indicator.

As an embodiment, the base station apparatus for wireless communication described above is characterized in that the second receiver module further receives a second reference signal. Wherein the second reference signal is transmitted by M reference antenna port groups, any one of the M reference antenna port groups includes a positive integer number of antenna ports, and the second reference signal is used to determine the K antenna ports; and M is a positive integer.

As an embodiment, the base station apparatus for wireless communication described above is characterized in that the second receiver module further receives uplink information. Wherein the uplink information is used to determine M1 reference antenna port groups, the M1 reference antenna port groups being a subset of the M reference antenna port groups, the M1 reference antenna port groups being used to determine the K antenna ports; the M1 is a positive integer no greater than the M.

As an embodiment, the base station apparatus used for wireless communication described above is characterized by comprising:

a second transmitter module that transmits the first signaling;

As an embodiment, the above base station apparatus for wireless communication is characterized in that the second transmitter module further transmits the first downlink information. Wherein the first downlink information is used to determine a second type of scheduling information for the first reference signal.

As an embodiment, the base station apparatus used for wireless communication described above is characterized in that the second transmitter module further transmits second downlink information. Wherein the second downlink information is used to determine the first threshold.

As an embodiment, the above base station apparatus for wireless communication is characterized in that the second transmitter module further transmits a second reference signal. Wherein the second reference signal is transmitted by M reference antenna port groups, any one of the M reference antenna port groups includes a positive integer number of antenna ports, and the second reference signal is used to determine the K antenna ports; and M is a positive integer.

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

the UE may determine whether the reference signal is used for codebook-based uplink transmission or codebook-not-based uplink transmission according to the number of antenna ports used for transmitting the reference signal, thereby optimizing multi-antenna related transmission of the reference signal according to a specific uplink transmission manner.

Implicitly indicating whether the reference signal is used for codebook-based uplink transmission or non-codebook-based uplink transmission by the number of antenna ports used for transmitting the reference signal saves signaling 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 and a first wireless signal 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 schematic diagram of the relationship between K1 antenna ports and K antenna ports according to an embodiment of the present application;

fig. 8 shows a schematic diagram of the relationship between K1 antenna ports and K antenna ports according to another embodiment of the present application;

figure 9 shows a schematic diagram of first signaling according to an embodiment of the present application;

figure 10 shows a schematic diagram of first signaling according to another embodiment of the present application;

fig. 11 shows a schematic resource mapping diagram of the first reference signal on a time-frequency domain according to an embodiment of the present application;

fig. 12 shows a block diagram of a processing device for use in a user equipment according to an embodiment of the present application;

fig. 13 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 flow chart of a first reference signal and a first wireless signal, as shown in fig. 1.

In embodiment 1, the ue in this application first transmits a first reference signal and then transmits a first radio signal. Wherein the first reference signal and the first wireless signal are transmitted by K antenna ports and K1 antenna ports, respectively; if the K is not greater than a first threshold, any of the K1 antenna ports is one of the K antenna ports, otherwise at least one of the K1 antenna ports is associated with multiple of the K antenna ports; the K is a positive integer, the K1 is a positive integer not greater than the K, and the first threshold is a positive integer.

As a sub-embodiment, the K not greater than the first threshold means: the K is less than or equal to the first threshold.

As a sub-embodiment, the first threshold is a sum of a maximum number of streams (layer) of uplink transmission that the ue can support and a second threshold, and the second threshold is a non-negative integer.

As a sub-embodiment, the maximum number of streams (layers) of uplink transmission that the user equipment can support is a positive integer no greater than 8.

As a sub-embodiment, the second threshold is equal to 0.

As a sub-embodiment, the second threshold is greater than 0.

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

As a sub-embodiment, if the K is greater than the first threshold, any one of the K1 antenna ports is associated with a plurality of the K antenna ports.

As a sub-embodiment, the first reference signal includes an SRS.

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, the first reference signal is narrowband.

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

As a sub-embodiment, the first reference signal occurs only once in the time domain.

As a sub-embodiment, the first reference signal occurs multiple times in the time domain.

As a sub-embodiment, the first reference signal is non-periodic (aperiodic).

As a sub-embodiment, the first reference signal is periodic (periodic).

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

As a sub-embodiment, the first reference signal includes K first sub-signals, and the K first sub-signals are respectively transmitted by the K antenna ports.

As a sub-embodiment, the time-frequency resources occupied by the K first sub-signals are mutually orthogonal (non-overlapping) two by two.

As a sub-embodiment, the time domain resources occupied by the K first sub-signals are mutually orthogonal (non-overlapping) two by two.

As a sub-embodiment, at least two first sub-signals of the K first sub-signals occupy the same time domain resource.

As a sub-embodiment, the code domain resources occupied by the K first sub-signals are mutually orthogonal pairwise.

As a sub-embodiment, at least two first sub-signals of the K first sub-signals occupy the same time-frequency resource.

As a sub-embodiment, the first wireless signal includes K1 wireless sub-signals, and the K1 wireless sub-signals are respectively transmitted by the K1 antenna ports.

As a sub-embodiment, the time-frequency resources occupied by the K1 wireless sub-signals are the same.

As a sub-embodiment, at least two of the K1 wireless sub-signals occupy orthogonal (non-overlapping) time-frequency resources.

As a sub-embodiment, the frequency domain resources occupied by the first wireless signal belong to the frequency domain resources occupied by the first reference signal.

As a sub-embodiment, the frequency domain resources occupied by the first wireless signal are a portion of the frequency domain resources occupied by the first reference signal.

As a sub-embodiment, the first wireless signal and the first reference signal occupy the same frequency domain resource.

As a sub-embodiment, the measurement on the first reference signal is used to determine a Modulation and Coding Scheme (MCS) of the first wireless signal.

As a sub-embodiment, the K is not greater than the first threshold, measurements for K1 first sub-signals are used to determine the MCS of the K1 wireless sub-signals, respectively, the K1 first sub-signals are subsets of the K first sub-signals, and the K1 first sub-signals are transmitted by the K1 antenna ports, respectively.

As a sub-embodiment, the measurements for the K first sub-signals are used to determine K reception qualities, respectively, and the reception quality corresponding to any one of the K1 first sub-signals is higher than the reception quality corresponding to any one of the K first sub-signals not belonging to the K1 first sub-signals.

As a sub-embodiment, any one of the K reception qualities is RSRP.

As a sub-embodiment, any one of the K reception qualities is RSRQ.

As a sub-embodiment, any one of the K reception qualities is a CQI.

As a sub-embodiment, the reception qualities corresponding to the K1 first sub-signals are respectively used to determine the MCS of the K1 wireless sub-signals.

As a sub-embodiment, a target antenna port is associated with K2 antenna ports, the target antenna port is one of the K1 antenna ports, the K2 antenna ports are a subset of the K antenna ports, the K is a positive integer greater than 1, the K2 is a positive integer greater than 1 and not greater than K.

As a sub-embodiment, the K2 is equal to the K.

As a sub-embodiment, the K2 is less than the K.

As a sub-embodiment, a target wireless sub-signal belongs to the K1 wireless sub-signals, the target wireless sub-signal being transmitted by the target antenna port, measurements for K2 first sub-signals being used to determine the MCS of the target wireless sub-signal, the K2 first sub-signals being a subset of the K first sub-signals, the K2 first sub-signals being transmitted by the K2 antenna ports, respectively.

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

As a sub-embodiment, K is a positive integer greater than 1.

As a sub-embodiment, the K1 is less than the K.

As a sub-embodiment, the K1 is equal to the K.

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-NR (Evolved UMTS terrestrial radio access network-new radio) 202, 5G-CN (5G-Core network, 5G Core network)/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-NR includes NR node B (gNB)203 and other gNBs 204. The gNB203 provides user and control plane protocol termination towards the UE 201. The gNB203 may be connected to other gnbs 204 via an X2 interface (e.g., backhaul). The gNB203 may also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a Basic Service Set (BSS), an Extended Service Set (ESS), a TRP (point of transmission reception), or some other suitable terminology. The gNB203 provides the UE201 with an access point to the 5G-CN/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. The gNB203 is connected to the 5G-CN/EPC210 through an S1 interface. The 5G-CN/EPC210 includes an MME211, other MMEs 214, an S-GW (Service Gateway) 212, and a P-GW (Packet data Network Gateway) 213. The MME211 is a control node that handles signaling between the UE201 and the 5G-CN/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 gNB203 corresponds to the base station in this 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 radio protocol architecture for the user plane and the control plane, fig. 3 showing the radio protocol architecture for the UE and the gNB in three layers: layer 1, layer 2 and layer 3. Layer 1(L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to herein as PHY 301. Layer 2(L2 layer) 305 is above PHY301 and is responsible for the link between the UE and the gNB through PHY 301. In the user plane, the L2 layer 305 includes a MAC (media access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the gNB on the network side. Although not shown, the UE may have several upper layers above the L2 layer 305, including a network layer (e.g., IP layer) that terminates at the P-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 gnbs. The RLC sublayer 303 provides segmentation and reassembly of upper layer packets, retransmission of lost packets, and reordering of packets to compensate for out-of-order reception due to HARQ. The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) in one cell among the UEs. The MAC sublayer 302 is also responsible for HARQ operations. In the control plane, the radio protocol architecture for the UE and the gNB is substantially the same for the physical layer 301 and the L2 layer 305, but without the header compression function for the control plane. The control plane also includes a RRC (Radio resource control) sublayer 306 in layer 3 (layer L3). The RRC sublayer 306 is responsible for obtaining radio resources (i.e., radio bearers) and configures the lower layers using RRC signaling between the gNB and the UE.

As 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 first wireless signal in the present application is generated in the PHY 301.

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

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

As a sub-embodiment, the first downlink information in the present application is generated in the MAC sublayer 302.

As a sub-embodiment, the second downlink information in the present application is generated in the RRC sublayer 306.

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

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

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 a UE450 and a gNB410 in communication with each other in an access network.

gNB410 includes a controller/processor 475, a memory 476, a receive processor 470, a transmit processor 416, a multi-antenna transmit processor 471, a multi-antenna receive processor 472, a transmitter/receiver 418, and antennas 420.

The UE450 includes a controller/processor 459, a memory 460, a data source 467, a transmit processor 468, a receive processor 456, a multi-antenna transmit processor 457, a multi-antenna receive processor 458, a transmitter/receiver 454, and an antenna 452.

In the DL (Downlink), at the gNB, upper layer packets from the core network are provided to a 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 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). The transmit processor 416 implements coding and interleaving to facilitate Forward Error Correction (FEC) at the UE450, and mapping of 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 multi-antenna transmit processor 471 performs spatial precoding/beamforming on the encoded and modulated symbols to generate one or more spatial streams. Transmit processor 416 then maps each spatial stream to subcarriers, multiplexes with reference signals (e.g., pilots) in the time and/or frequency domain, and then combines together using an Inverse Fast Fourier Transform (IFFT) to generate a physical channel carrying a time-domain multicarrier symbol stream. Each transmitter 418 converts the baseband multi-carrier symbol stream provided by the transmit processor 416 into a radio frequency stream that is then provided to a different antenna 420.

In the DL (Downlink), at the UE450, each receiver 454 receives a signal through its respective antenna 452. Each receiver 454 recovers information modulated onto a radio frequency carrier and converts the radio frequency stream into a baseband multi-carrier symbol stream that is provided to a receive processor 456. Receive processor 456 and multi-antenna receive processor 458 implement the various signal processing functions of the L1 layer. Receive processor 456 converts the baseband multicarrier symbol stream from the time domain to the frequency domain using a Fast Fourier Transform (FFT). In the frequency domain, the physical layer data signals and the reference signals to be used for channel estimation are demultiplexed by the receive processor 456, and the data signals are input to the multi-antenna receive processor 458 for performing multi-antenna detection functions to recover any spatial streams destined for the UE 450. The symbols on each spatial stream are demodulated and recovered at a receive processor 456 and soft decisions are generated. Receive processor 456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals transmitted by the gNB410 on the physical channels. The higher layer data and control signals are then provided to a controller/processor 459. The controller/processor 459 implements the functionality of 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), at the UE450, a data source 467 is used to provide upper layer data packets to the controller/processor 459. Data source 467 represents all protocol layers above the L2 layer. Similar to the transmit function at the gNB410 described in the DL, the controller/processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on the radio resource allocation of the gNB410, implementing L2 layer functions for the user plane and the control plane. The controller/processor 459 is also responsible for HARQ operations, retransmission of lost packets, and signaling to the gNB 410. The appropriate coding and modulation schemes are selected by a transmit processor 468 and a multi-antenna spatial precoding/beamforming process is provided by a multi-antenna transmit processor 457. The spatial streams generated by the multi-antenna transmit processor 457 are conditioned by a transmit processor 468 into a multi-carrier/single-carrier symbol stream and provided to different antennas 452 by a transmitter 454. Each transmitter 454 first converts the baseband symbol stream provided by the transmit processor 468 into a radio frequency symbol stream that is provided to the antenna 452.

In UL (Uplink), the function at the gNB410 is similar to the reception function at the UE450 described in DL. Each receiver 418 receives radio frequency signals through its respective antenna 420, converts the received radio frequency signals to baseband signals, and provides the baseband signals to a receive processor 470. The receive processor 470 and the multiple antenna receive processor 472 collectively implement the functionality of the L1 layer. Controller/processor 475 implements the L2 layer functions. 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 an 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: transmitting the first reference signal in the present application, transmitting the first wireless signal in the present application, receiving the first signaling in the present application, receiving the first downlink information in the present application, receiving the second downlink information in the present application, { receiving the second reference signal in the present application, transmitting the second reference signal in the present application }, and transmitting the uplink information in the present application.

As a sub-embodiment, the gNB410 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 gNB410 includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: receiving the first reference signal in the present application, receiving the first wireless signal in the present application, transmitting the first signaling in the present application, transmitting the first downlink information in the present application, transmitting the second downlink information in the present application, { receiving the second reference signal in the present application, transmitting the second reference signal in the present application }, and receiving the uplink information in the present application.

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

As a sub-embodiment, the gNB410 corresponds to the base station in the present application.

As a sub-embodiment, at least one of the transmit processor 468, the multi-antenna transmit processor 457 and the controller/processor 459 is configured to transmit the first reference signal and at least one of the receive processor 470, the multi-antenna receive processor 472 and the controller/processor 475 is configured to receive the first reference signal.

As a sub-embodiment, at least one of the transmit processor 468, the multi-antenna transmit processor 457 and the controller/processor 459 is configured to transmit the first wireless signal in the present application, and at least one of the receive processor 470, the multi-antenna receive processor 472 and the controller/processor 475 is configured to receive the first wireless signal in the present application.

As a sub-embodiment, at least one of the transmit processor 416, the multi-antenna transmit processor 471 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, the multi-antenna receive processor 458 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, the multi-antenna transmit processor 471 and the controller/processor 475 is configured to transmit the first downlink information in the present application, and at least one of the receive processor 456, the multi-antenna receive processor 458 and the controller/processor 459 is configured to receive the first downlink information in the present application.

As a sub-embodiment, at least one of the transmit processor 416, the multi-antenna transmit processor 471 and the controller/processor 475 is configured to transmit the second downlink information in the present application, and at least one of the receive processor 456, the multi-antenna receive processor 458 and the controller/processor 459 is configured to receive the second downlink information in the present application.

As a sub-embodiment, at least one of the transmit processor 468, the multi-antenna transmit processor 457 and the controller/processor 459 is configured to transmit the second reference signal and at least one of the receive processor 470, the multi-antenna receive processor 472 and the controller/processor 475 is configured to receive the second reference signal.

As a sub-embodiment, at least one of the transmit processor 416, the multi-antenna transmit processor 471 and the controller/processor 475 is configured to transmit the second reference signal in the present application, and at least one of the receive processor 456, the multi-antenna receive processor 458 and the controller/processor 459 is configured to receive the second reference signal in the present application.

As a sub-embodiment, at least one of the transmit processor 468, the multi-antenna transmit processor 457 and the controller/processor 459 is configured to transmit the uplink information in the present application, and at least one of the receive processor 470, the multi-antenna receive processor 472 and the controller/processor 475 is configured to receive the uplink information in the present application.

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 block F1, block F2, and block F3, respectively, are optional.

For N1, second downlink information is sent in step S101; transmitting first downlink information in step S102; receiving a second reference signal in step S103; receiving a first reference signal in step S11; transmitting a first signaling in step S12; the first wireless signal is received in step S13.

For U2, receiving second downlink information in step S201; receiving first downlink information in step S202; transmitting a second reference signal in step S203; transmitting a first reference signal in step S21; receiving a first signaling in step S22; the first wireless signal is transmitted in step S23.

In embodiment 5, the first reference signal and the first wireless signal are transmitted by K antenna ports and K1 antenna ports, respectively; if the K is not greater than a first threshold, any of the K1 antenna ports is one of the K antenna ports, otherwise at least one of the K1 antenna ports is associated with multiple of the K antenna ports; the K is a positive integer, the K1 is a positive integer not greater than the K, and the first threshold is a positive integer. The first signaling comprises first type scheduling information of the first wireless signal; if the K is greater than the first threshold, the first signaling comprises a first domain, otherwise the first signaling does not comprise a first domain; the first field includes a precoding matrix identification. The first downlink information is used by the U2 to determine a second type of scheduling information for the first reference signal. The second downstream information is used by the U2 to determine the first threshold. The second reference signal is transmitted by M reference antenna port groups, any one of the M reference antenna port groups including a positive integer number of antenna ports, the second reference signal being used by the N1 to determine the K antenna ports; and M is a positive integer.

As a sub-embodiment, the first threshold is the sum of the maximum number of upstream (layer) of upstream transmissions that the U2 can support and a second threshold, and the second threshold is a non-negative integer.

As a sub-embodiment, the maximum number of streams (layers) of upstream transmission that the U2 can support is a positive integer no greater than 8.

As a sub-embodiment, the second threshold is equal to 0.

As a sub-embodiment, the second threshold is greater than 0.

As a sub-embodiment, the first reference signal includes an SRS.

As a sub-embodiment, K is a positive integer greater than 1.

As a sub-embodiment, the K1 is less than the K.

As a sub-embodiment, the K1 is equal to the K.

As a sub-embodiment, the precoding matrix identity is one of { PMI, TPMI }.

As a sub-embodiment, the first field comprises a positive integer number of bits.

As a sub-embodiment, the first field includes a number of bits independent of the value of K1.

As a sub-embodiment, the first field is used by the U2 to determine a beamforming vector corresponding to any one of the K1 antenna ports.

As a sub-embodiment, the first signaling is dynamic signaling for UpLink Grant (UpLink Grant).

As a sub-embodiment, the first type of scheduling information includes at least one of { occupied time domain resource, occupied frequency domain resource, MCS, HARQ process number, RV, NDI, occupied antenna port, corresponding transmit beamforming vector, and corresponding transmit spatial filtering }.

As a sub-embodiment, a payload size (payload size) of the first signaling is different when the K is greater than the first threshold and when the K is not greater than the first threshold.

As a sub-embodiment, the U2 determines the payload size of the first signaling based on whether the K is greater than the first threshold.

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

As a sub-embodiment, the second type of scheduling information includes at least one of { occupied time domain resource, occupied frequency domain resource, occupied code domain resource, cyclic shift amount (cyclic shift), OCC, occupied antenna port, corresponding transmit beamforming vector, and corresponding transmit spatial filtering (spatial filtering) }.

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

As a sub-embodiment, the first downlink information is carried by RRC signaling.

As a sub-embodiment, the first downlink information is carried by mac ce signaling.

As a sub-embodiment, the first downlink information 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, the second downlink information is carried by a higher layer signaling.

As a sub-embodiment, the second downlink information is carried by RRC signaling.

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

As a sub-embodiment, the first threshold is semi-static (semi-static) configured.

As a sub-embodiment, the first threshold is UE-specific.

As a sub-embodiment, the first signaling comprises at least one of { a second domain, a third domain }, the second domain comprising a rank indicator, the third domain comprising a reference signal resource indicator.

As a sub-embodiment, the rank indicator is an RI.

As a sub-embodiment, the reference signal resource identity is one of { SRI, CRI }.

As a sub-embodiment, the second field and the third field each include a positive integer number of bits.

As a sub-embodiment, the third field comprises a number of bits independent of the value of the second field.

As a sub-embodiment, the third field comprises a number of bits independent of the value of K1.

As a sub-embodiment, at least one of the second domain in the first signaling and the third domain in the first signaling is used by the U2 to determine the K1 antenna ports from the K antenna ports, the K not being greater than the first threshold.

As a sub-embodiment, the second field in the first signaling is used by the U2 to determine the K1.

As a sub-embodiment, the third field in the first signaling is used by the U2 to determine an index of each of the K1 antenna ports among the K antenna ports, the K not being greater than the first threshold.

As a sub-embodiment, the second reference signal includes an SRS.

As a sub-embodiment, any two antenna ports in any of the M reference antenna port groups are QCL.

As a sub-embodiment, the beamforming vectors corresponding to the antenna ports in the M reference antenna port groups are used by the U2 to determine the beamforming vectors corresponding to the K antenna ports.

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 U4. In FIG. 6, the steps in block F4, block F5, block F6, and block F7, respectively, are optional.

For N3, second downlink information is sent in step S301; transmitting a second reference signal in step S302; receiving uplink information in step S303; transmitting first downlink information in step S304; receiving a first reference signal in step S31; transmitting a first signaling in step S32; the first wireless signal is received in step S33.

For U4, receiving second downlink information in step S401; receiving a second reference signal in step S402; transmitting uplink information in step S403; receiving first downlink information in step S404; transmitting a first reference signal in step S41; receiving a first signaling in step S42; the first wireless signal is transmitted in step S43.

In embodiment 6, the first reference signal and the first wireless signal are transmitted by K antenna ports and K1 antenna ports, respectively; if the K is not greater than a first threshold, any of the K1 antenna ports is one of the K antenna ports, otherwise at least one of the K1 antenna ports is associated with multiple of the K antenna ports; the K is a positive integer, the K1 is a positive integer not greater than the K, and the first threshold is a positive integer. The first signaling comprises first type scheduling information of the first wireless signal; if the K is greater than the first threshold, the first signaling comprises a first domain, otherwise the first signaling does not comprise a first domain; the first field includes a precoding matrix identification. The first downlink information is used by the U4 to determine a second type of scheduling information for the first reference signal. The second downstream information is used by the U4 to determine the first threshold. The second reference signal is transmitted by M reference antenna port groups, any one of the M reference antenna port groups comprising a positive integer number of antenna ports, the second reference signal is used by the U4 to determine M1 reference antenna port groups, the M1 reference antenna port groups are a subset of the M reference antenna port groups. The uplink information is used by the N3 to determine the M1 reference antenna port groups, the M1 reference antenna port groups are used by the N3 to determine the K antenna ports; the M is a positive integer, and the M1 is a positive integer not greater than the M.

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

As a sub-embodiment, physical layer signaling carrying the first downlink information is used to trigger the sending of the first reference signal.

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

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 uplink information indicates an index of each of the M1 reference antenna port groups in the M reference antenna port groups.

As a sub-embodiment, the uplink information includes UCI.

As a sub-embodiment, the uplink information includes one or more of { CSI, CRI, RSRP, RSRQ, CQI, PMI }.

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

As a sub-embodiment, the uplink 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).

Example 7

Embodiment 7 illustrates a schematic diagram of K1 antenna ports and the relationship between the K antenna ports, as shown in fig. 7.

In embodiment 7, the first reference signal in the present application and the first wireless signal in the present application are transmitted by the K antenna ports and the K1 antenna ports, respectively. The K is not greater than the first threshold in this application, and any one of the K1 antenna ports is one of the K antenna ports. The K is a positive integer, and the K1 is a positive integer no greater than the K. One antenna port is formed by overlapping antennas in a positive integer number of antenna groups through antenna virtualization (virtualization), and one antenna group comprises the positive integer number of antennas. One antenna group is connected to the baseband processor through one RF (Radio Frequency) chain, and different antenna groups correspond to different rfchains. And the mapping coefficients of a plurality of antennas included in any one antenna group in the positive integer number of antenna groups to the antenna ports form an analog beamforming vector of the antenna group. And the corresponding analog beamforming vectors of the positive integer number of antenna groups are arranged diagonally to form an analog beamforming matrix of the antenna port. The positive integer number of antenna group to antenna port mapping coefficients constitute a digital beamforming vector for the antenna port.

As shown in fig. 7, one antenna port includes S antenna groups, where S is a positive integer. The analog beam forming vectors corresponding to the S antenna groups are w respectively₀，w₁，…，w_S-1(ii) a And the digital beamforming vector corresponding to the antenna port is b. The analog beamforming matrix corresponding to the antenna port is

The corresponding beam forming vector of the antenna port is

As a sub-embodiment, if any one of the K1 antenna ports is one of the K antenna ports, it means that: a beamforming vector corresponding to any one of the K1 antenna ports is the same as a beamforming vector corresponding to one of the K antenna ports.

As a sub-embodiment, the K1 antenna ports are a subset of the K antenna ports.

As a sub-embodiment, any one of the K reception qualities is RSRP.

As a sub-embodiment, any one of the K reception qualities is RSRQ.

As a sub-embodiment, any one of the K reception qualities is a CQI.

As a sub-embodiment, the K1 antenna ports are subsets of the K antenna ports, measurements for K1 first sub-signals are used to determine the MCS of the K1 wireless sub-signals, respectively, the K1 first sub-signals are subsets of the K first sub-signals, and the K1 first sub-signals are transmitted by the K1 antenna ports, respectively.

As a sub-embodiment, all antenna groups included in one antenna port correspond to the same analog beamforming vector.

As a sub-embodiment, an antenna port includes antenna groups, at least two of which correspond to different analog beamforming vectors.

As a sub-embodiment, at least one of the second domain in the first signaling in this application and the third domain in the first signaling in this application is used to determine the K1 antenna ports from the K antenna ports.

As a sub-embodiment, at least one of the second field in the first signaling and the third field in the first signaling is used to determine an index of each of the K1 antenna ports among the K antenna ports.

As a sub-embodiment, the second field in the first signaling is used to determine the K1.

As a sub-embodiment, the third field in the first signaling is used to determine an index of each of the K1 antenna ports among the K antenna ports.

As a sub-embodiment, K is a positive integer greater than 1.

As a sub-embodiment, the K1 is less than the K.

As a sub-embodiment, the K1 is equal to the K.

As a sub-embodiment, S in fig. 7 is equal to 1.

As a sub-embodiment, said S in fig. 7 is larger than 1.

Example 8

Embodiment 8 illustrates a schematic diagram of K1 antenna ports and the relationship between the K antenna ports, as shown in fig. 8.

In embodiment 8, the first reference signal in the present application and the first wireless signal in the present application are transmitted by the K antenna ports and the K1 antenna ports, respectively; the K is greater than the first threshold in this application, and at least one of the K1 antenna ports is associated with a plurality of the K antenna ports. A target antenna port is associated with K2 antenna ports, the target antenna port being one of the K1 antenna ports, the K2 antenna ports being a subset of the K antenna ports, the K being a positive integer greater than 1, the K1 being a positive integer no greater than the K, the K2 being a positive integer greater than 1 and no greater than K. The target antenna port is formed by superposing all antennas included in the K2 antenna ports through antenna Virtualization (Virtualization), and mapping coefficients of all antennas included in the K2 antenna ports to the target antenna port form a beamforming vector of the target antenna port. The beamforming vector for the target antenna port is generated by a product of a first matrix and a first vector. Mapping coefficients of K2 antenna groups to the target antenna port form the first vector, and corresponding beamforming vectors of the K2 antenna ports are arranged diagonally to form the first matrix; the K2 antenna groups are respectively composed of antennas included in the K2 antenna ports.

In fig. 8, the beamforming vectors corresponding to the K2 antenna ports are c₀，c₁，…，c_K2-1(ii) a The first vector is a. The analog beam forming matrix corresponding to the target antenna port is

The beam forming vector corresponding to the target antenna port is

As a sub-embodiment, the K2 is equal to the K.

As a sub-embodiment, the K2 is less than the K.

As a sub-embodiment, any one of the K1 antenna ports is associated with a plurality of the K antenna ports.

As a sub-embodiment, the first field in the first signaling in this application is used to determine the first vector.

As a sub-embodiment, the first field in the first signaling indicates the first vector.

As a sub-embodiment, the first vector belongs to N candidate vectors, the first field in the first signaling indicates an index of the first vector among the N candidate vectors, the N being a positive integer greater than 1.

Example 9

Embodiment 9 illustrates a schematic diagram of first signaling, as shown in fig. 9.

In embodiment 9, the K in this application is greater than the first threshold in this application, and the first signaling includes a first domain, a second domain, and a third domain. The first domain comprises a precoding matrix indicator, the second domain comprises a rank indicator, and the third domain comprises a reference signal resource indicator.

As a sub-embodiment, the precoding matrix indicator is a PMI.

As a sub-embodiment, the precoding matrix identity is TPMI.

As a sub-embodiment, the first field comprises 2 bits.

As a sub-embodiment, the first field comprises 3 bits.

As a sub-embodiment, the first field comprises 4 bits.

As a sub-embodiment, the first field comprises 5 bits.

As a sub-embodiment, the first field comprises 6 bits.

As a sub-embodiment, the first field comprises a number of bits that is independent of the value of K1 in the present application.

As a sub-embodiment, the rank indicator is an RI.

As a sub-embodiment, the reference signal resource identity is SRI.

As a sub-embodiment, the reference signal resource identity is a CRI.

As a sub-embodiment, the second field comprises a positive integer number of bits.

As a sub-embodiment, the third field comprises a positive integer number of bits.

Example 10

Embodiment 10 illustrates a schematic diagram of first signaling, as shown in fig. 10.

In embodiment 10, the K in this application is not greater than the first threshold in this application, and the first signaling includes a second field and a third field. The second domain includes a rank indicator and the third domain includes a reference signal resource indicator.

Example 11

Embodiment 11 illustrates a resource mapping diagram of a first reference signal in a time-frequency domain, as shown in fig. 11.

In embodiment 11, the first reference signal is transmitted by K antenna ports, the K antenna ports are divided into M2 first antenna port groups, and any one of the M2 first antenna port groups includes a positive integer number of antenna ports; the M2 is a positive integer no greater than the K.

As a sub-embodiment, the first reference signals transmitted by different first antenna port groups occupy two pairs of mutually orthogonal time domain resources.

As a sub-embodiment, any two antenna ports in any one of the M2 first antenna port groups are QCL.

As a sub-embodiment, all antenna ports in any one of the M2 first antenna port groups correspond to the same analog beamforming matrix.

As a sub-embodiment, any two of the M2 first antenna port groups correspond to different analog beamforming matrices.

As a sub-embodiment, different antenna ports in any one of the M2 first antenna port groups correspond to different digital beamforming vectors.

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 features 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 matrix.

As a sub-embodiment, two antenna ports are QCL means: the analog beamforming vector corresponding to any antenna group in one antenna port and the analog beamforming vector corresponding to any antenna group in another antenna port are equal.

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 intended receiver of the first reference signal 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 intended receiver of the first reference signal may receive the wireless signals transmitted on the two antenna ports with the same analog beamforming vector.

As a sub-embodiment, two antenna ports being of the QCL means: the intended receiver of the first reference signal may receive the wireless signals transmitted on both antenna ports with the same spatial filtering.

For one embodiment, the first reference signal is wideband.

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

As a sub-embodiment, the first reference signal is non-periodic (aperiodic).

As a sub-embodiment, the first reference signal is periodic (periodic).

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

As a sub-embodiment, the K1 antenna ports in the present application are divided into M3 second antenna port groups, and any one of the M3 second antenna port groups includes a positive integer number of antenna ports; the M3 second antenna port groups respectively correspond to M3 first antenna port groups one-to-one, and the M3 first antenna port groups are subsets of the M2 first antenna port groups. The M3 is a positive integer no greater than the K1.

As a sub-embodiment, any two antenna ports in any of the M3 second antenna port groups are QCL.

As a sub-embodiment, any antenna port in any one of the M3 second antenna port groups is one antenna port in a corresponding first antenna port group, and K is not greater than the first threshold in this application.

As a sub-embodiment, at least one antenna port in any one of the M3 second antenna port groups is associated with a plurality of antenna ports in a corresponding first antenna port group and is not associated with any antenna port in the K antenna ports that does not belong to the corresponding first antenna port group; the K is greater than the first threshold.

As a sub-embodiment, the second field in the first signaling in this application is used to determine the M3.

As a sub-embodiment, the third field in the first signaling in the present application is used to determine an index of each of the M3 first antenna port groups in the M2 first antenna port groups.

As a sub-embodiment, the third field includes a number of bits independent of the value of M3.

As a sub-embodiment, the M2 is equal to the K.

As a sub-embodiment, the M2 is less than the K.

As a sub-embodiment, M2 is equal to 1.

As a sub-embodiment, the M3 is equal to the K1.

As a sub-embodiment, the M3 is less than the K1.

As a sub-embodiment, M3 is equal to 1.

As a sub-embodiment, the M2 is larger than the M3.

As a sub-embodiment, the M2 is equal to the M3.

As a sub-embodiment, the M2 first antenna port groups respectively correspond to M2 SRS resources (srsrsresources).

As a sub-embodiment, the { time domain resource, frequency domain resource, code domain resource } occupied by the first reference signal transmitted on the M2 first antenna port groups respectively belong to the M2 SRS resources.

Example 12

Embodiment 12 is a block diagram illustrating a processing apparatus used in a user equipment, as shown in fig. 12. In fig. 12, a processing apparatus 1200 in a user equipment is mainly composed of a first transmitter module 1201 and a first receiver module 1202.

In embodiment 12, a first transmitter module 1201 transmits a first reference signal and a first wireless signal; the first receiver module 1202 receives the first signaling.

In embodiment 12, the first reference signal and the first wireless signal are transmitted by K antenna ports and K1 antenna ports, respectively; if the K is not greater than a first threshold, any of the K1 antenna ports is one of the K antenna ports, otherwise at least one of the K1 antenna ports is associated with multiple of the K antenna ports; the K is a positive integer, the K1 is a positive integer not greater than the K, and the first threshold is a positive integer. The first signaling comprises first type scheduling information of the first wireless signal; if the K is greater than the first threshold, the first signaling comprises a first domain, otherwise the first signaling does not comprise a first domain; the first field includes a precoding matrix identification.

As a sub-embodiment, the first transmitter module 1201 also transmits a second reference signal. Wherein the second reference signal is transmitted by M reference antenna port groups, any one of the M reference antenna port groups includes a positive integer number of antenna ports, and the second reference signal is used to determine the K antenna ports; and M is a positive integer.

As a sub-embodiment, the first transmitter module 1201 also transmits uplink information. Wherein the uplink information is used to determine M1 reference antenna port groups, the M1 reference antenna port groups being a subset of the M reference antenna port groups, the M1 reference antenna port groups being used to determine the K antenna ports; the M1 is a positive integer no greater than the M.

As a sub-embodiment, the first receiver module 1202 also receives first downlink information. Wherein the first downlink information is used by the first transmitter module 1201 to determine a second type of scheduling information of the first reference signal.

As a sub-embodiment, the first receiver module 1202 further receives second downlink information. Wherein the second downlink information is used by the first transmitter module 1201 to determine the first threshold.

As a sub-embodiment, the first receiver module 1202 also receives a second reference signal. Wherein the second reference signal is transmitted by M reference antenna port groups, any one of the M reference antenna port groups includes a positive integer number of antenna ports, and the second reference signal is used by the first transmitter module 1201 to determine the K antenna ports; and M is a positive integer.

As a sub-embodiment, the first transmitter module 1201 includes at least one of the antenna 452, the transmitter 454, the transmit processor 468, the multi-antenna transmit processor 457, the controller/processor 459, the memory 460, and the data source 467 of embodiment 4.

As a sub-embodiment, the first receiver module 1202 includes at least one of the antenna 452, the receiver 454, the receive processor 456, the multi-antenna receive processor 458, the controller/processor 459, and the memory 460 of embodiment 4.

Example 13

Embodiment 13 is a block diagram illustrating a processing apparatus used in a base station, as shown in fig. 13. In fig. 13, a processing means 1300 in the base station is mainly composed of a second receiver module 1301 and a second transmitter module 1302.

In embodiment 13, the second receiver module 1301 receives a first reference signal and a first wireless signal; the second transmitter module 1302 transmits the first signaling.

In embodiment 13, the first reference signal and the first wireless signal are transmitted by K antenna ports and K1 antenna ports, respectively; if the K is not greater than a first threshold, any of the K1 antenna ports is one of the K antenna ports, otherwise at least one of the K1 antenna ports is associated with multiple of the K antenna ports; the K is a positive integer, the K1 is a positive integer not greater than the K, and the first threshold is a positive integer. The first signaling comprises first type scheduling information of the first wireless signal; if the K is greater than the first threshold, the first signaling comprises a first domain, otherwise the first signaling does not comprise a first domain; the first field includes a precoding matrix identification.

As a sub-embodiment, the second receiver module 1301 also receives a second reference signal. Wherein the second reference signal is transmitted by M reference antenna port groups, any one of the M reference antenna port groups includes a positive integer number of antenna ports, and the second reference signal is used by the second transmitter module 1302 to determine the K antenna ports; and M is a positive integer.

As a sub-embodiment, the second receiver module 1301 also receives uplink information. Wherein the uplink information is used by the second transmitter module 1302 to determine M1 reference antenna port groups, the M1 reference antenna port groups being a subset of the M reference antenna port groups, the M1 reference antenna port groups being used by the second transmitter module 1302 to determine the K antenna ports; the M1 is a positive integer no greater than the M.

As a sub-embodiment, the second transmitter module 1302 also transmits the first downlink information. Wherein the first downlink information is used to determine a second type of scheduling information for the first reference signal.

As a sub-embodiment, the second transmitter module 1302 further transmits second downlink information. Wherein the second downlink information is used to determine the first threshold.

As a sub-embodiment, the second transmitter module 1302 also transmits a second reference signal. Wherein the second reference signal is transmitted by M reference antenna port groups, any one of the M reference antenna port groups includes a positive integer number of antenna ports, and the second reference signal is used to determine the K antenna ports; and M is a positive integer.

As a sub-embodiment, the second receiver module 1301 includes at least one of the antenna 420, the receiver 418, the receive processor 470, the multi-antenna receive processor 472, the controller/processor 475, and the memory 476 of embodiment 4.

As a sub-embodiment, the second transmitter module 1302 includes at least one of the antenna 420, the transmitter 418, the transmit processor 416, the multi-antenna transmit processor 471, the controller/processor 475, and the memory 476 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. User equipment, terminal and UE 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, Machine Type Communication (MTC) 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, a gNB (NR node B), a TRP (Transmitter Receiver Point), 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 used for wireless communication, comprising:

-transmitting a first reference signal;

-receiving a first signaling;

-transmitting a first wireless signal;

wherein the first reference signal comprises an SRS; the first reference signal and the first wireless signal are transmitted by K antenna ports and K1 antenna ports, respectively; if the K is not greater than a first threshold, any of the K1 antenna ports is one of the K antenna ports, otherwise any of the K1 antenna ports is related to a plurality of the K antenna ports; the K is a positive integer, the K1 is a positive integer not greater than the K, the first threshold is a positive integer; the first threshold is a maximum number of streams of uplink transmission that the user equipment can support; the first signaling comprises first type scheduling information of the first wireless signal; if the K is greater than the first threshold, the first signaling comprises a first field, the first field comprises a precoding matrix identification, and the first field in the first signaling is used for determining the K1 antenna ports; otherwise the first signaling does not include the first domain.

2. The method of claim 1, comprising:

-receiving first downlink information;

3. The method according to claim 1 or 2, comprising:

-receiving second downlink information;

4. The method of claim 1 or 2, wherein the first signaling comprises at least one of a second domain comprising a rank indicator or a third domain comprising a reference signal resource indicator.

5. The method according to claim 1 or 2, comprising:

-operating the second reference signal;

6. The method of claim 5, comprising:

-transmitting uplink information after receiving the second reference signal;

wherein the operation is reception, the uplink information is used to determine M1 reference antenna port groups, the M1 reference antenna port groups are a subset of the M reference antenna port groups, the second reference signal is used by the user equipment to determine the M1 reference antenna port groups; the set of M1 reference antenna ports is used by a sender of the second reference signal to determine the K antenna ports; the M1 is a positive integer no greater than the M.

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

-receiving a first reference signal;

-transmitting first signalling;

-receiving a first wireless signal;

wherein the first reference signal comprises an SRS; the first reference signal and the first wireless signal are transmitted by K antenna ports and K1 antenna ports, respectively; if the K is not greater than a first threshold, any of the K1 antenna ports is one of the K antenna ports, otherwise any of the K1 antenna ports is related to a plurality of the K antenna ports; the K is a positive integer, the K1 is a positive integer not greater than the K, the first threshold is a positive integer; the first threshold is a maximum number of streams of uplink transmission that a sender of the first wireless signal can support; the first signaling comprises first type scheduling information of the first wireless signal; if the K is greater than the first threshold, the first signaling comprises a first field, the first field comprises a precoding matrix identification, and the first field in the first signaling is used for determining the K1 antenna ports; otherwise the first signaling does not include the first domain.

8. The method of claim 7, comprising:

-transmitting the first downlink information;

9. The method according to claim 7 or 8, comprising:

-transmitting second downlink information;

10. The method of claim 7 or 8, wherein the first signaling comprises at least one of a second domain comprising a rank indicator or a third domain comprising a reference signal resource indicator.

11. The method according to claim 7 or 8, comprising:

-executing a second reference signal;

12. The method as recited in claim 11, comprising:

-receiving uplink information after transmitting the second reference signal;

wherein the performing is transmitting, the uplink information is used to determine M1 reference antenna port groups, the M1 reference antenna port groups are a subset of the M reference antenna port groups, the second reference signal is used by a transmitter of the uplink information to determine the M1 reference antenna port groups; the set of M1 reference antenna ports is used by the base station to determine the K antenna ports; the M1 is a positive integer no greater than the M.

13. A user device configured for wireless communication, comprising:

a first receiver module to receive a first signaling;

14. The UE of claim 13, wherein the first receiver module further receives first downlink information, wherein the first downlink information is used to determine a second type of scheduling information for the first reference signal.

15. The UE of claim 13 or 14, wherein the first receiver module further receives second downlink information, and wherein the second downlink information is used for determining the first threshold.

16. The user equipment of claim 13 or 14, wherein the first signaling comprises at least one of a second domain comprising a rank indicator or a third domain comprising a reference signal resource indicator.

17. The UE of claim 13 or 14, wherein the first transmitter module transmits a second reference signal, wherein the second reference signal is transmitted by M reference antenna port groups, wherein any one of the M reference antenna port groups comprises a positive integer number of antenna ports, and wherein the second reference signal is used for determining the K antenna ports; m is a positive integer;

or, a first receiver module receives a second reference signal, where the second reference signal is transmitted by M reference antenna port groups, any one of the M reference antenna port groups includes a positive integer number of antenna ports, and the second reference signal is used to determine the K antenna ports; and M is a positive integer.

18. The user equipment of claim 17, wherein the first transmitter module further transmits uplink information after receiving the second reference signal, wherein the uplink information is used to determine M1 reference antenna port groups, wherein the M1 reference antenna port groups are a subset of the M reference antenna port groups, and wherein the second reference signal is used by the user equipment to determine the M1 reference antenna port groups; the set of M1 reference antenna ports is used by a sender of the second reference signal to determine the K antenna ports; the M1 is a positive integer no greater than the M.

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

a second transmitter module that transmits the first signaling;

20. The base station device of claim 19, wherein the second transmitter module further transmits first downlink information, wherein the first downlink information is used to determine a second type of scheduling information for the first reference signal.

21. The base station device of claim 19 or 20, the second transmitter module further transmitting second downlink information, wherein the second downlink information is used to determine the first threshold.

22. The base station device of claim 19 or 20, wherein the first signaling comprises at least one of a second domain comprising a rank indicator or a third domain comprising a reference signal resource indicator.

23. The base station device of claim 19 or 20, wherein the second receiver module further receives a second reference signal, wherein the second reference signal is transmitted by M reference antenna port groups, wherein any one of the M reference antenna port groups comprises a positive integer number of antenna ports, and wherein the second reference signal is used for determining the K antenna ports; m is a positive integer;

or, a second transmitter module transmits a second reference signal, where the second reference signal is transmitted by M reference antenna port groups, any one of the M reference antenna port groups includes a positive integer number of antenna ports, and the second reference signal is used to determine the K antenna ports; and M is a positive integer.

24. The base station device of claim 23, wherein the second receiver module further receives uplink information after transmitting the second reference signal, wherein the uplink information is used to determine M1 reference antenna port groups, wherein the M1 reference antenna port groups are a subset of the M reference antenna port groups, and wherein the second reference signal is used by a transmitter of the uplink information to determine the M1 reference antenna port groups; the set of M1 reference antenna ports is used by the base station device to determine the K antenna ports; the M1 is a positive integer no greater than the M.