CN108123739B - A method and apparatus in UE and base station used for multi-antenna transmission - Google Patents

Abstract

The invention provides a method and a device used in UE (user equipment) and a base station for multi-antenna transmission. The UE firstly receives Q second-type wireless signals; and then transmits the third information. The Q second-type wireless signals are respectively sent by Q antenna port groups, and the antenna port groups comprise positive integer antenna ports. The third information is used to determine a first antenna port. The first antenna port corresponds to a first channel quality, the first channel quality not being lower than a sum of a reference channel quality plus a target threshold. The invention effectively improves the beam scanning efficiency under the condition of limited radio frequency link resources.

Description

A method and apparatus in UE and base station used for multi-antenna transmission

technical field

The present invention relates to a scheme for multi-antenna transmission in a wireless communication system.

Background technique

Massive MIMO has become a research hotspot of next-generation mobile communications. In Massive MIMO, multiple antennas use beamforming to form narrower beams pointing in a specific direction to improve communication quality.

According to the discussion of 3GPP (3rd Generation Partner Project) RAN1 (RadioAccess Network, Radio Access Network), hybrid beamforming combining analog beamforming (analog beamforming) and digital precoding (digital precoding) Hybrid beamforming has become an important research direction of NR (NewRadio technology, new wireless technology) system.

Since analog beamforming is a broadband operation, beam sweeping is used for beam selection and channel state information reporting, i.e. using different analog beamforming vectors for the reference signal at different time units for beam selection . How to effectively improve the efficiency of beam scanning under the condition of limited radio frequency link resources is an urgent problem to be solved.

SUMMARY OF THE INVENTION

The present invention discloses a solution for the above problem. It should be noted that, in the case of no conflict, the embodiments in the UE of the present application and the features in the embodiments may be applied to the base station, and vice versa. Further, the embodiments of the present application and the features in the embodiments may be arbitrarily combined with each other under the condition of no conflict.

The present invention discloses a method in UE (User Equipment, user equipment) used for multi-antenna transmission, which includes the following steps:

- Step A. Receive Q second type wireless signals;

- Step B. Sending the third message.

The Q second-type wireless signals are respectively sent by Q antenna port groups, and the antenna port groups include a positive integer number of antenna ports. The Q is a positive integer. The third information is used to determine the first antenna port. The first antenna port is one antenna port in a first antenna port group, and the first antenna port group is one antenna port group in the Q antenna port groups. The first antenna port group includes P2 of the antenna ports, where P2 is a positive integer greater than 1. The second wireless signal is one second-type wireless signal among the Q second-type wireless signals. The second wireless signal is transmitted by the first antenna port group. The first antenna port corresponds to the first channel quality, and the first channel quality is not lower than the sum of the reference channel quality and the target threshold.

As an example, the target threshold is default.

As an example, the target threshold is configurable.

As an embodiment, the target threshold is notified by the base station.

As an embodiment, the target threshold is calculated by the UE.

As an embodiment, the target threshold is equal to the result of subtracting the reference channel quality from the first channel quality.

As an embodiment, the unit of the channel quality is dBm, and the unit of the target threshold is dB.

As an embodiment, the unit of the channel quality is dB, and the unit of the target threshold is dB.

As an embodiment, the unit of the channel quality is milliwatts, and the unit of the target threshold is milliwatts.

As an embodiment, the unit of the target threshold is dB.

As an embodiment, the target threshold is 0.

As an embodiment, the reference channel quality is the maximum value of the channel quality corresponding to the antenna ports other than the first antenna port in the first antenna port group.

As an embodiment, the reference channel quality is an average value of channel qualities corresponding to antenna ports other than the first antenna port in the first antenna port group.

As an embodiment, the reference channel quality is the maximum value of the channel quality corresponding to the antenna ports other than the first antenna port in the Q antenna port groups.

As an embodiment, the reference channel quality is an average value of channel qualities corresponding to antenna ports other than the first antenna port in the Q antenna port groups.

As an embodiment, the target threshold ensures that the channel quality corresponding to the first antenna port is significantly better than the channel quality corresponding to other antenna ports in the first antenna port group, that is, the channel quality corresponding to the first antenna port group is The other antenna ports are approximately orthogonal to the UE.

As an embodiment, the reference channel quality is notified by the base station.

As an embodiment, the wireless signal is a multi-carrier symbol.

As an embodiment, the wireless signal is a single carrier symbol.

As an embodiment, the wireless signal adopts an OFDM (Orthogonal Frequency Division Multiplexing, orthogonal frequency division multiplexing) modulation method.

As an embodiment, the wireless signal adopts FBMC (Filter Bank MultiCarrier, filter bank multicarrier) symbols.

As an embodiment, the wireless signal adopts a modulation mode of SC-FDMA (Single-carrier Frequency-Division Multiple Access, single-carrier frequency division multiple access).

As an embodiment, one of the antenna ports is formed by superposing multiple physical antennas through antenna virtualization (Virtualization), and mapping coefficients from the multiple physical antennas to the antenna ports form a beamforming vector.

As an embodiment, one of the antenna ports corresponds to and only corresponds to one beamforming vector.

As an example, the beamforming vectors corresponding to any two different antenna ports cannot be assumed to be the same.

As an example, the small-scale characteristics of the wireless channel experienced by signals transmitted by one antenna port cannot be used to infer the small-scale characteristics of the wireless channel experienced by signals transmitted by another antenna port.

As an embodiment, the P2 antenna ports correspond to P2 beamforming vectors respectively, the P2 antenna ports are respectively used to transmit P2 wireless sub-signals, and the P2 wireless sub-signals constitute the second wireless Signal.

As an embodiment, the wireless sub-signal is a reference signal.

As an example, one antenna port is associated with one reference signal.

As an embodiment, one antenna port corresponds to and only corresponds to one reference signal.

As an embodiment, one reference signal corresponds to and only corresponds to one beamforming vector.

As an embodiment, the first reference signal and the second reference signal are any two reference signals, and the first reference signal and the second reference signal correspond to mutually orthogonal air interface resources. The air interface resources include at least one of {time domain resources, frequency domain resources, code domain resources}.

As an embodiment, the pattern of the reference signal in one subframe reuses the pattern of the CSI-RS in one subframe.

As an embodiment, the reference signal is CSI-RS.

As an embodiment, the code domain resource is an Orthogonal Cover Code (OCC).

As an embodiment, the code domain resource is one of {Zadoff-Chu sequence, pseudo-random sequence}.

As an embodiment, the Q antenna port groups are respectively used to transmit Q reference signal groups, and the reference signal groups include a positive integer number of reference signals.

As an embodiment, the first reference signal group is one reference signal group among the Q reference signal groups, and the second reference signal group is another reference signal group among the Q reference signal groups. The first reference signal is one reference signal of the first reference signal group. The second reference signal is one reference signal of the second reference signal group. The first reference signal is sent in a first time unit. The second reference signal is sent in a second time unit. The resource mapping pattern corresponding to the first reference signal in the first time unit is the same as the resource mapping pattern corresponding to the second reference signal in the second time unit.

As an embodiment, the number of antenna ports included in any two antenna port groups in the Q antenna port groups is the same.

As an embodiment, the number of antenna ports included in any one of the Q antenna port groups is P2.

As an embodiment, any one of the Q antenna port groups corresponds to P2 reference signals.

As an embodiment, the number of antenna ports included in multiple antenna port groups in the Q antenna port groups is different.

As an embodiment, the time domain resources occupied by any two antenna port groups in the Q antenna port groups are orthogonal.

As an embodiment, the time domain resources occupied by any two of the antenna ports in one of the Q antenna port groups are orthogonal.

As an embodiment, the time domain resources occupied by the Q antenna port groups overlap.

As an embodiment, at least one given moment is occupied by Q antenna ports, and the Q antenna ports belong to the Q antenna port groups respectively.

As an example, the Q is greater than 1.

As an example, the Q is equal to one.

As an embodiment, the third information is transmitted on a physical layer control channel.

As an embodiment, the third information is transmitted on a physical layer data channel.

As an embodiment, the manner in which the third information is used to determine the first antenna port is: the third information indicates air interface resources of the second wireless signal.

As an embodiment, the manner in which the third information is used to determine the first antenna port is: the third information indicates a time domain resource of the second wireless signal

As an embodiment, a manner in which the third information is used to determine the first antenna port is: the third information includes an index of the second wireless signal.

As an embodiment, a manner in which the third information is used to determine the first antenna port is: the third information includes an index of the first antenna port group, and only in the first antenna port group The first antenna port is included.

As an embodiment, a manner in which the third information is used to determine the first antenna port is: the third information includes an index of the first antenna port group and the first antenna port in the Index in the first antenna port group.

As an embodiment, a manner in which the third information is used to determine the first antenna port is: the third information includes an index of the first antenna port.

As an embodiment, the channel quality includes {RSRP (Reference Signal ReceivingPower, reference signal received power), RSRQ (Reference Signal Receiving Quality, reference signal received quality), SINR (Signal Interference Noise Ratio, signal to interference and noise ratio)} in at least one of.

As an embodiment, the manner in which the first antenna port corresponds to the first channel quality is: the first reference signal is the reference signal corresponding to the first antenna port, and the first reference signal is used to determine The first channel quality, where the first channel quality is a result of channel measurement performed by the UE according to the first reference signal.

As an embodiment, the first channel quality is the maximum value of the channel quality corresponding to all the antenna ports in the Q antenna port groups.

As an embodiment, the first channel quality is one of several better channel quality values among channel quality values corresponding to all antenna ports in the Q antenna port groups.

As an embodiment, the first channel quality is a maximum value of channel qualities corresponding to all antenna ports in the first antenna port group.

As an embodiment, the first channel quality is one of several better channel quality values among channel quality values corresponding to all antenna ports in the first antenna port group.

As an embodiment, the target threshold is related to the P2.

Specifically, according to an aspect of the present invention, it is characterized in that, it further comprises the following steps:

- Step C. Receive L first-type wireless signals;

- Step D. Sending the second message.

Wherein, the L first-type wireless signals are respectively sent by the L antenna port groups. The target first-type wireless signal is one first-type wireless signal among the L first-type wireless signals. The target antenna port group is the antenna port group used for transmitting the target first-type wireless signal among the L antenna port groups. The second information is used to determine the target antenna port group from the L antenna port groups. The L antenna port groups are associated with at least one of {the first antenna port group, the first antenna port}.

As an embodiment, the L antenna port groups transmit L reference signal groups respectively.

As an embodiment, the pattern of the reference signal group in one subframe reuses the pattern of CSI-RS in one subframe.

As an embodiment, the reference signal group consists of CSI-RS.

As an embodiment, the sequence corresponding to the reference signal includes at least one of {Zadoff-Chu sequence, pseudo-random sequence}.

As an embodiment, the number of antenna ports included in any two antenna port groups in the L antenna port groups is the same.

As an embodiment, the number of antenna ports included in multiple antenna port groups in the L antenna port groups is different.

As an embodiment, the time domain resources allocated to any two of the L antenna port groups are orthogonal.

As an embodiment, the time domain resources occupied by any two of the antenna ports in one of the L antenna port groups are orthogonal.

As an embodiment, the time domain resources occupied by the L antenna port groups overlap.

As an embodiment, at least one given moment is occupied by L antenna ports, and the L antenna ports belong to the L antenna port groups respectively.

As an embodiment, the target antenna port group is an antenna port group with the best channel quality among the L antenna port groups.

As an embodiment, the target antenna port group is one antenna port group among multiple antenna port groups with better channel quality among the L antenna port groups.

As an embodiment, the target antenna port group is one antenna port group of the L antenna port groups whose channel quality is higher than the first threshold.

As an embodiment, the first threshold is configurable.

As an embodiment, the first threshold is notified by the base station.

As an embodiment, the first threshold is default.

As an embodiment, measurements for one reference signal group are used to determine the channel quality of the corresponding group of antenna ports.

As an embodiment, the manner in which the second information is used to determine the target antenna port group from the L antenna port groups is: the second information indicates air interface resources of the first wireless signal.

As an embodiment, the manner in which the second information is used to determine the target antenna port group from the L antenna port groups is: the second information indicates time domain information of the first wireless signal .

As an embodiment, the manner in which the second information is used to determine the target antenna port group from the L antenna port groups is: the second information includes the serial number of the first wireless signal.

As an embodiment, the manner in which the second information is used to determine the target antenna port group from the L antenna port groups is: the second information includes the number of the target antenna port group.

As an embodiment, the manner in which the second information is used to determine the target antenna port group from the L antenna port groups is: the second information includes the number of the antenna port in the target antenna port group.

As an embodiment, the second information is transmitted on a physical layer control channel.

As an embodiment, the second information is transmitted on a physical layer data channel.

As an embodiment, the L antenna port groups are implicitly determined by the first antenna port.

As an embodiment, the beam directions corresponding to the L antenna port groups are associated with the beam directions corresponding to one of {the first antenna port group, the first antenna port}.

As an embodiment, a beam direction corresponding to at least one antenna port in any one of the L antenna port groups is one of {the first antenna port group, the first antenna port} one of the corresponding beam directions.

As an embodiment, an analog beam direction corresponding to at least one antenna port in any one of the L antenna port groups is {the first antenna port group, the first antenna port} where One of the beam directions corresponding to one.

As an embodiment, a beam direction corresponding to at least one antenna port in any one of the L antenna port groups is in one of {the first antenna port group, the first antenna port} within the coverage of the corresponding beam.

As an example, a beam direction is the direction of a boresight of the antenna array.

As an embodiment, the antenna array corresponds to one line of sight.

As an embodiment, the antenna array corresponds to multiple lines of sight.

As an embodiment, a line of sight refers to the direction corresponding to the maximum antenna gain of the antenna array.

As an embodiment, the number of directions corresponding to the maximum antenna gain of the antenna array is greater than one.

As an embodiment, one beam direction is the center direction of one main lobe of the antenna array.

As an embodiment, the antenna array corresponds to multiple main lobes.

As an embodiment, the time domain resource occupied by at least one antenna port in any one of the L antenna port groups is implicitly determined by the time domain resource occupied by the first antenna port group .

As an embodiment, the time domain resources occupied by at least one antenna port in any one of the L antenna port groups and the time domain resources occupied by the first antenna port group are continuous.

As an embodiment, the frequency domain resource occupied by at least one antenna port in any one of the L antenna port groups is determined by {the first antenna port group, the first antenna port} where The frequency domain resources occupied by one of them are implicitly determined.

As an embodiment, the frequency domain unit occupied by at least one antenna port in any one of the L antenna port groups and {the first antenna port group, the first antenna port} is one of the One occupied frequency domain unit is the same, and the frequency domain unit is composed of Z consecutive subcarriers. As an example, the Z is 12.

As an embodiment, the second information and the third information are for the same CSI process (Process).

Specifically, according to an aspect of the present invention, the step D further includes the following steps:

-D1. Send the first message.

Wherein, the first information is used to determine at least one of {first modulation mode, first coding rate, first channel quality indicator}. Measurements on the first wireless signal, which is transmitted by P1 antenna ports, are used to determine the first information, where P1 is a positive integer. The calculation of the first information assumes that the transmit power of the antenna port is increased by a first ratio. The P1 antenna ports are associated with at least one of {the first antenna port group, the first antenna port}. The first wireless signal is the target wireless signal of the first type, and the P1 antenna ports form the target antenna port group; or the first wireless signal is a part of the target wireless signal of the first type, so the The P1 antenna ports are a subset of the target antenna port group.

As an embodiment, the first information and the second information belong to one uplink control indication (UCI).

As an embodiment, the first information and the third information are for the same CSI process (Process).

As an embodiment, the first radio signal is the target radio signal of the first type, the P1 antenna ports form the target antenna port group, and the UE targets all antenna ports in the target antenna port group A channel measurement is made, and the channel measurement is used to determine the first information.

As an embodiment, the first wireless signal is a part of the target first type wireless signal, the P1 antenna ports are a subset of the target antenna port group, and the UE targets the target antenna ports The P1 antenna ports in the group perform channel measurement, and the channel measurement is used to determine the first information.

As an embodiment, the antenna ports other than the P1 antenna ports in the target antenna port group are used by other UEs to determine the channel quality indicators associated with other UEs.

As an embodiment, the antenna ports other than the P1 antenna ports in the target antenna port group are used for transmitting data.

As an embodiment, the P1 antenna ports correspond to P1 transmit beamforming vectors respectively.

As an embodiment, each of the P1 antenna ports corresponds to one beam direction.

As an embodiment, one antenna port of the P1 antenna ports corresponds to multiple beam directions.

As an embodiment, one of the P1 antenna ports corresponds to N1 beam directions, the first antenna port corresponds to P1 beam directions, and one of the N1 beam directions is the P1 beam directions For a beam direction of a beam direction, the P1 antenna ports correspond to the P1 beam directions of the first antenna port.

As an example, the N1 is equal to the P2.

The foregoing embodiment saves the air interface resources occupied by the reference signals sent by the P1 antenna ports, or improves the efficiency of beam scanning. Further, the base station determines, according to the third information, a useful beam direction for the UE among the P2 beam directions.

As an embodiment, at least one antenna port in the P1 antenna ports corresponds to a transmit beamforming vector generated after a plurality of transmit beamforming vectors of the first type are superimposed.

As an embodiment, one first-type transmit beamforming vector is used to form one beam direction, and the superposition of multiple first-type transmit beamforming vectors can be used to form multiple beam directions.

As an embodiment, the first type of transmit beamforming vectors are discrete Fourier (DFT) vectors.

As an embodiment, the first type of transmit beamforming vector is the Kronecker product of two DFT vectors.

As an embodiment, the two DFT vectors correspond to a horizontal direction and a vertical direction, respectively.

As an embodiment, the first type of transmit beamforming vectors are used to form a beam direction pair. The beam direction pair corresponds to two beam directions.

As an embodiment, the first type of transmit beamforming vector is a concatenation of two second type of transmit beamforming vectors.

As an embodiment, the two second-type transmit beamforming vectors respectively correspond to two antenna polarization directions.

As an embodiment, one of the two second-type transmit beamforming vectors is a result of phase-shifting the other second-type transmit beamforming vector.

As an embodiment, the second type of transmit beamforming vector is the Kronecker product of two DFT vectors.

As an embodiment, the two DFT vectors correspond to a horizontal direction and a vertical direction, respectively.

As an embodiment, the first type of transmit beamforming vector is a concatenation of a second type of transmit beamforming vector and N zero vectors, where N is a positive integer. All elements of the second type of transmit beamforming vector are non-zero.

As an embodiment, the P1 antenna ports are implicitly determined by the first antenna port indicated by the third information.

As an embodiment, a subset of beam directions corresponding to the P1 antenna ports is associated with a beam direction corresponding to one of {the first antenna port group, the first antenna port}.

As an embodiment, a subset of beam directions corresponding to the P1 antenna ports is a subset of beam directions corresponding to one of {the first antenna port group, the first antenna port} set.

As an embodiment, an analog beam direction corresponding to the P1 antenna ports is a beam direction corresponding to one of {the first antenna port group, the first antenna port}.

As an embodiment, one beam direction corresponding to the P1 antenna ports is within the coverage range of a beam corresponding to one of {the first antenna port group, the first antenna port}.

As an embodiment, the time domain resources occupied by the P1 antenna ports are implicitly determined by the time domain resources occupied by the first antenna port group.

As an embodiment, the time domain resources occupied by the P1 antenna ports and the time domain resources occupied by the first antenna port group are consecutive.

As an embodiment, the frequency domain resources occupied by the P1 antenna ports are implicitly determined by the frequency domain resources occupied by one of {the first antenna port group, the first antenna port}.

As an embodiment, the frequency domain unit occupied by the P1 antenna ports and the frequency domain unit occupied by one of {the first antenna port group, the first antenna port} are the same, and the frequency domain unit It consists of Z consecutive subcarriers.

As an embodiment, the P1 antenna ports correspond to T1 RF chains, and the T1 is a positive integer greater than or equal to 1

As an embodiment, multiple antenna ports among the P1 antenna ports correspond to a same RF chain.

As an example, the T1 is equal to one.

As an embodiment, the T1 is equal to P1, and the P1 antenna ports correspond to the T1 RF chains respectively.

As an embodiment, the T1 RF chains correspond to T1 analog beam directions respectively.

As an embodiment, multiple RF chains in the T1 RF chains correspond to different analog beam directions.

As an embodiment, multiple RF chains in the T1 RF chains correspond to the same analog beam direction.

As an embodiment, one RF chain in the T1 RF chains corresponds to multiple analog beam directions.

As an example, an analog beam direction is the direction of a boresight of the antenna array without digital precoding.

As an embodiment, an analog beam direction is the center direction of a main lobe of the antenna array without digital precoding.

As an embodiment, one analog beam direction corresponds to one first-type analog beamforming vector.

As an example, one RF chain corresponds to one analog beamforming vector. The analog beamforming vector maps the output of the RF chain onto the antenna array. For physical antennas to which the RF chain is not connected, the corresponding coefficient of the analog beamforming vector is zero.

As an embodiment, the way that one RF chain corresponds to multiple analog beam directions is: the output of the RF chain is mapped to the antenna array through the analog beamforming vector, and the analog beamforming vector is composed of a plurality of first Analogue beamforming vector forming.

As an embodiment, the manner in which the analog beamforming vector is formed by a plurality of first type analog beamforming vectors is: the analog beamforming vector is a result of superposition of a plurality of first type analog beamforming vectors.

As an embodiment, the manner in which the analog beamforming vector is formed by a plurality of analog beamforming vectors of the first type is: the analog beamforming vector is a result of concatenating a plurality of analog beamforming vectors of the first type .

As an embodiment, the manner in which the analog beamforming vector is formed by a plurality of analog beamforming vectors of the first type is: the analog beamforming vector is a result of multiplying a plurality of analog beamforming vectors of the first type .

As an embodiment, the first type of analog beamforming vector is implemented by an array composed of phase shifters.

As an embodiment, the first type of analog beamforming vector is a DFT vector.

As an embodiment, one antenna port corresponds to one transmit beamforming vector, and the transmit beamforming vector is formed by a digital precoding vector and an analog beamforming matrix. The digital precoding vector is a vector that maps the reference signal or radio resource block corresponding to the antenna port to its associated RF chain. The analog beamforming matrix is a matrix that maps the outputs of the RF chains associated with the antenna ports onto an antenna array.

As an embodiment, the analog beamforming matrix is composed of analog beamforming vectors. One dimension of the analog beamforming matrix is the number of RF chains connected to the antenna array.

As an embodiment, a manner in which the transmit beamforming vector is formed by the digital precoding vector and the analog beamforming matrix is: the transmit beamforming vector is the combination of the digital precoding vector and the analog beamforming matrix. Product of beamforming matrices.

As an embodiment, the time domain resources occupied by the P1 antenna ports are coincident.

As an embodiment, the time domain resources are radio symbols.

As an embodiment, the time domain resource is a time slot.

As an embodiment, the time domain resources are subframes.

As an example, the P1 is equal to one.

As an embodiment, the P1 is greater than 1.

As an embodiment, the first modulation mode is one of {QPSK, 16QAM, 64QAM, 256QAM}.

As an embodiment, the first coding rate is a ratio of one information bit before channel coding carried by one coded bit after channel coding.

As an embodiment, the first encoding rate is greater than 0 and less than 1.

As an embodiment, the first channel quality indicator is associated with {channel measurement result, the UE processing capability}, and the channel measurement result is a result obtained by performing channel estimation based on reference signals associated with the P1 antenna ports.

As an embodiment, the first channel quality indicator is used to determine at least one of {coding scheme, modulation scheme, coding rate, number of HARQ retransmissions}.

As an embodiment, the first information is a channel quality indicator.

As an embodiment, the first information is transmitted on a physical layer control channel (ie, a physical layer channel that can only carry physical layer signaling).

As an embodiment, the physical layer control channel is PUCCH (Physical Uplink Control Channel, physical uplink control channel).

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

As an embodiment, the first information is transmitted on a physical layer data channel (ie, a physical layer channel capable of carrying physical layer data).

As an embodiment, the physical layer data channel is a PUSCH (Physical Uplink Shared Channel, physical uplink shared channel).

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

As an embodiment, a manner in which the first information is used to determine at least one of {the first modulation scheme, the first coding rate, the first channel quality indicator} is: the first The information indicates the first modulation scheme.

As an embodiment, a manner in which the first information is used to determine at least one of {the first modulation scheme, the first coding rate, the first channel quality indicator} is: the first The information indicates the first encoding rate.

As an embodiment, a manner in which the first information is used to determine at least one of {the first modulation scheme, the first coding rate, the first channel quality indicator} is: the first The information includes the first channel quality indication.

As an embodiment, the first information indicates that: if the transmit power of the P1 antenna ports is increased by the first proportion, the first modulation mode and the first coding rate are used in the same time as the P1 antennas. A bit block transmitted on the air interface resource associated with the port can be received with a block error rate not higher than 0.1.

As an embodiment, the bit block is a TB (Transport Block, transport block).

As an embodiment, the length of the bit block is 1024 bits.

As an example, the first scale is a positive real number.

As an example, the first ratio is a positive integer.

As an example, the first ratio is associated with the P1.

As an embodiment, the first ratio is associated with the number of beam directions corresponding to the P1 antenna ports.

As an embodiment, the first ratio increases as the number of corresponding beam directions in the P1 antenna ports increases.

As an embodiment, the manner in which the measurement on the first wireless signal is used to determine the first information is: the reference signal associated with the P1 antenna ports is used for the wireless channel associated with the antenna port A measurement is performed, the measurement being used to determine at least one of {first modulation scheme, first coding rate, first channel quality indication}.

As an embodiment, the manner in which the measurement on the first wireless signal is used to determine the first information is: the measurement obtains a first SINR group, and the first SINR group is used to determine {the first modulation at least one of the mode, the first coding rate, and the first channel quality indicator}.

As an embodiment, the calculation of the first information assumes that the transmit power of the antenna port is increased by the first ratio in a manner that: the second SINR group is that the SINR value included in the first SINR group is increased As a result of the first ratio, the first information is used to determine at least one of {first modulation mode, first coding rate, first channel quality indicator} corresponding to the second SINR group.

As an embodiment, the first SINR group includes only one SINR value.

As an embodiment, the first wireless signal is a multi-carrier symbol, and the first SINR group includes a set of multi-carrier SINR values.

As an embodiment, the UE maps the second SINR group to the first SINR value by means of Effective Exponential SNRMapping (EESM), and the UE maps the channel corresponding to the first SINR value The quality indicator is used as the first channel quality indicator.

As an embodiment, the UE uses a modulation scheme corresponding to the first SINR value as the first modulation scheme.

As an embodiment, the UE uses a coding rate corresponding to the first SINR value as the first coding rate.

As an embodiment, the target threshold is related to the P1.

Specifically, according to an aspect of the present invention, the step C further includes the following steps:

- Step C0. Receive the first signaling.

Wherein, the first signaling is used to determine {air interface resources occupied by the L first-type wireless signals, where L, the air interface resources occupied by the first wireless signals, the P1, the At least one of the first ratio}, the air interface resources include at least one of {time domain resources, frequency domain resources, code domain resources}.

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

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

As an embodiment, the first signaling is common to cells.

As an embodiment, the first signaling is directed to the UE.

As an embodiment, the first signaling is directed to a terminal group, the terminal group includes multiple terminals, and the UE is one of the terminals in the terminal group.

As an embodiment, the first signaling is sent by the first antenna port.

As one embodiment, the receive beamforming vector for the first antenna port is used to determine the receive beamforming vector for the first signaling.

As an embodiment, the first signaling is sent by the first antenna port group.

As one embodiment, the receive beamforming vector for the first antenna port group is used to determine the receive beamforming vector for the first antenna port group.

As an embodiment, the first signaling is used to determine {the air interface resources occupied by the L first-type wireless signals, the L, the air interface resources occupied by the first wireless signals, the P1 , at least one of the first proportions} is: the first signaling explicitly indicates {the air interface resources occupied by the L first-type wireless signals, the L, the first wireless signal Occupied air interface resources, at least one of the P1 and the first ratio}.

As an embodiment, the first signaling is used to determine {the air interface resources occupied by the L first-type wireless signals, the L, the air interface resources occupied by the first wireless signals, the P1 , at least one of the first proportions} is: the first signaling implicitly indicates {air interface resources occupied by the L first-type wireless signals, the L, the first Air interface resources occupied by wireless signals, at least one of the P1 and the first ratio}.

Specifically, according to an aspect of the present invention, the step A further includes the following steps:

- Step A0. Receive the second signaling.

Wherein, the second signaling is used to determine {the air interface resources occupied by the Q second type wireless signals, the Q, the air interface resources occupied by the second wireless signals, the P2, the target threshold, at least one of the reference channel quality }.

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

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

As an embodiment, the second signaling is common to cells.

As an embodiment, the second signaling is used for the air interface resources occupied by the Q second-type wireless signals, where Q is the air interface resources occupied by the second wireless signals, and the P2 is the air interface resources occupied by the second wireless signals. at least one of the target threshold value and the reference channel quality} is: the second signaling explicitly indicates the air interface resources occupied by the Q second-type wireless signals, the Q, the second Air interface resources occupied by wireless signals, at least one of the P2, the target threshold, and the reference channel quality}.

As an embodiment, the second signaling is used to determine the air interface resources occupied by the Q second-type wireless signals, the Q, the air interface resources occupied by the second wireless signals, and the P2, The method of at least one of the target threshold value and the reference channel quality} is: the second signaling implicitly indicates the air interface resources occupied by the Q second-type wireless signals, and the Q, the at least one of the air interface resources occupied by the second wireless signal, the P2, the target threshold, and the reference channel quality}.

Specifically, according to an aspect of the present invention, the third information is used to determine at least one of {the target threshold, the first channel quality}.

As an embodiment, a manner in which the third information is used to determine at least one of {the target threshold, the first channel quality} is that: the third information includes the target threshold.

As an embodiment, the manner in which the third information is used to determine at least one of {the target threshold, the first channel quality} is that: the third information includes the first channel quality.

As an embodiment, the target threshold is used to determine the first scale.

As an embodiment, the method in which the target threshold is used to determine the first ratio is: one of the P1 antenna ports corresponds to N1 beam directions, and the N1 is greater than 1. M1 beam directions of the N1 beam directions are associated with at least one of {first antenna port group, first antenna port}. The beam directions other than the M1 beam directions among the N1 beam directions form a first beam direction group. The first beam direction group is associated with Q2 antenna ports in the Q antenna port group. The first channel quality group consists of Q2 channel qualities corresponding to the Q2 antenna ports. The difference between the first channel quality and any one channel quality in the first channel quality group is greater than or equal to a second threshold, and the second threshold is less than or equal to the target threshold. The first ratio is equal to (N1-M1)/M1. The second threshold is determined by the base station. According to the embodiment, the (N1-M1) is associated with the target threshold and thus the first ratio is associated with the target threshold.

As an example, the M1 is equal to one.

As an embodiment, the M1 is greater than 1.

As an embodiment, the method in which the target threshold is used to determine the first ratio is: the number of antenna ports in the target antenna port group is N1, and the N1 is greater than P1. The P1 antenna ports are antenna ports associated with at least one of {first antenna port group, first antenna port} among the N1 antenna ports. (N1-P1) antenna ports other than the P1 antenna ports in the target antenna port group form a second antenna port group. The second antenna port group is associated with Q3 antenna ports in the Q antenna port group. The first channel quality group is composed of Q3 channel qualities corresponding to the Q3 antenna ports. The difference between the first channel quality and any one channel quality in the first channel quality group is greater than or equal to a second threshold, and the second threshold is less than or equal to the target threshold. The first ratio is equal to (N1-P1)/P1. The second threshold is determined by the base station. According to the embodiment, the (N1-P1) is associated with the target threshold, thus the first ratio is associated with the target threshold.

As an embodiment, the first channel quality is used to determine the P1 antenna ports.

As an embodiment, the first channel quality is used to determine transmit beamforming vectors corresponding to the P1 antenna ports respectively.

As an embodiment, the manner in which the first channel quality is used to determine the P1 antenna ports is: the first channel quality corresponding to the P1 antenna ports is greater than or equal to a first channel quality threshold. The first channel quality threshold is a threshold set by the base station.

Specifically, according to an aspect of the present invention, it is characterized in that, it further comprises the following steps:

- Step E. Receiving the third wireless signal.

Wherein, at least one of {the first information, the second information, and the third information} is used to generate the third wireless signal.

As an embodiment, the third wireless signal is transmitted on the PDSCH.

As an embodiment, the third wireless signal is transmitted on the sPDSCH.

As an embodiment, the transmit beamforming vectors corresponding to the P1 antenna ports are used for transmit beamforming of the third wireless signal.

As an embodiment, the received power of the third wireless signal is increased by a first ratio.

As an embodiment, the transmit power for transmitting the third wireless signal is increased by a first ratio.

As an embodiment, the beam directions of the P1 antenna ports for the UE are used to determine the beam direction of the third wireless signal.

As an embodiment, the beam direction of the third wireless signal consists of beam directions of the P1 antenna ports for the UE.

As an embodiment, the number of antenna ports used to transmit the third wireless signal is P1.

The present invention discloses a method used in a base station for multi-antenna transmission, which includes the following steps:

- Step A. Sending Q second type wireless signals;

- Step B. Receiving the third information.

The Q second-type wireless signals are respectively sent by Q antenna port groups, and the antenna port groups include a positive integer number of antenna ports. The Q is a positive integer. The third information is used to determine the first antenna port. The first antenna port is one antenna port in a first antenna port group, and the first antenna port group is one antenna port group in the Q antenna port groups. The first antenna port group includes P2 of the antenna ports, where P2 is a positive integer greater than 1. The second wireless signal is one second-type wireless signal among the Q second-type wireless signals. The second wireless signal is transmitted by the first antenna port group. The first antenna port corresponds to the first channel quality, and the first channel quality is not lower than the sum of the reference channel quality and the target threshold.

As an embodiment, the second type of wireless signal is common to cells.

As an embodiment, the second type of wireless signal is directed to multiple UEs.

As an embodiment, the second type of wireless signal is directed to one UE.

As an embodiment, the second type of wireless signals respectively correspond to different UE groups.

As an embodiment, the second type of radio signals corresponds to a same UE group.

As an embodiment, all antenna ports in the first antenna port group correspond to one UE.

As an embodiment, the antenna ports in the first antenna port group correspond to multiple UEs.

Specifically, according to an aspect of the present invention, it is characterized in that, it further comprises the following steps:

- Step C. Sending L first-type wireless signals;

- Step D. Receiving the second information.

Wherein, the L first-type wireless signals are respectively sent by the L antenna port groups. The target first-type wireless signal is one first-type wireless signal among the L first-type wireless signals. The target antenna port group is the antenna port group used for transmitting the target first-type wireless signal among the L antenna port groups. The second information is used to determine the target antenna port group from the L antenna port groups. The L antenna port groups are associated with at least one of {the first antenna port group, the first antenna port}.

As an embodiment, the first type of wireless signal is common to cells.

As an embodiment, the first type of wireless signal is directed to a plurality of UEs.

As an embodiment, the first type of wireless signal is directed to one UE.

As an embodiment, the first type of wireless signals respectively correspond to different UE groups.

As an embodiment, the radio signals of the first type correspond to a same UE group.

As an embodiment, all antenna ports in the target antenna port group correspond to one UE.

As an embodiment, the antenna ports in the target antenna port group correspond to multiple UEs.

Specifically, according to an aspect of the present invention, the step D further includes the following steps:

-D1. Receive the first message.

Wherein, the first information is used to determine at least one of {first modulation mode, first coding rate, first channel quality indicator}. Measurements on the first wireless signal, which is transmitted by P1 antenna ports, are used to determine the first information, where P1 is a positive integer. The calculation of the first information assumes that the transmit power of the antenna port is increased by a first ratio. The P1 antenna ports are associated with at least one of {the first antenna port group, the first antenna port}. The first wireless signal is the target wireless signal of the first type, and the P1 antenna ports form the target antenna port group; or the first wireless signal is a part of the target wireless signal of the first type, so the The P1 antenna ports are a subset of the target antenna port group.

As an embodiment, the P1 radio ports are directed to one target UE.

As an embodiment, the first wireless signal is directed to a target UE, and the first information is used to determine {first modulation mode, first coding rate, first channel quality indicator} associated with the target UE at least one of.

As an embodiment, the calculation of the first information by the target UE assumes that the transmit power of the antenna port is increased by a first ratio.

As an embodiment, the P1 radio ports are directed to multiple UEs.

As an embodiment, the first wireless signal is directed to multiple UEs, and the first information is used to determine {first modulation mode, first coding rate, first channel quality indicator} associated with the multiple UEs at least one of them.

As an embodiment, the calculation of the first information by each of the plurality of UEs assumes that the transmit power of the antenna port is increased by a first ratio.

Specifically, according to an aspect of the present invention, the step A further includes the following steps:

- Step C0. Sending the first signaling.

Wherein, the first signaling is used to determine {air interface resources occupied by the L first-type wireless signals, where L, the air interface resources occupied by the first wireless signals, the P1, the At least one of the first ratio}, the air interface resources include at least one of {time domain resources, frequency domain resources, code domain resources}.

As an embodiment, the first signaling is directed to a target UE.

As an embodiment, the first signaling is directed to a terminal group, the terminal group includes multiple terminals, and the target UE is a terminal in the terminal group.

As an embodiment, the transmit beamforming vector for the first antenna port is used to determine the transmit beamforming vector for the first signaling.

As an embodiment, the transmit beamforming vector for the first antenna port group is used to determine the transmit beamforming vector for the first signaling.

Specifically, according to an aspect of the present invention, the step A further includes the following steps:

- Step A0. Sending the second signalling.

Wherein, the second signaling is used to determine {the air interface resources occupied by the Q second type wireless signals, the Q, the air interface resources occupied by the second wireless signals, the P2, the target threshold, at least one of the reference channel quality }.

Specifically, according to an aspect of the present invention, the third information is used to determine at least one of {the target threshold, the first channel quality}.

Specifically, according to an aspect of the present invention, it is characterized in that, it further comprises the following steps:

- Step C. Sending a third wireless signal.

Wherein, at least one of {the first information, the second information, and the third information} is used to generate the third wireless signal.

The present invention discloses a user equipment used for multi-antenna transmission, which includes the following modules:

- The first receiving module: used to receive Q second type wireless signals;

- The first sending module: used to send the third information.

The Q second-type wireless signals are respectively sent by Q antenna port groups, and the antenna port groups include a positive integer number of antenna ports. The Q is a positive integer. The third information is used to determine the first antenna port. The first antenna port is one antenna port in a first antenna port group, and the first antenna port group is one antenna port group in the Q antenna port groups. The first antenna port group includes P2 of the antenna ports, where P2 is a positive integer greater than 1. The second wireless signal is one second-type wireless signal among the Q second-type wireless signals. The second wireless signal is transmitted by the first antenna port group. The first antenna port corresponds to the first channel quality, and the first channel quality is not lower than the sum of the reference channel quality and the target threshold.

As an embodiment, the above-mentioned user equipment is characterized in that the first receiving module is further configured to receive L wireless signals of the first type; the first sending module is further configured to send second information. Wherein, the L first-type wireless signals are respectively sent by the L antenna port groups. The target first-type wireless signal is one first-type wireless signal among the L first-type wireless signals. The target antenna port group is the antenna port group used for transmitting the target first-type wireless signal among the L antenna port groups. The second information is used to determine the target antenna port group from the L antenna port groups. The L antenna port groups are associated with at least one of {the first antenna port group, the first antenna port}.

As an embodiment, the above-mentioned user equipment is characterized in that the first sending module is further configured to send first information. Wherein, the first information is used to determine at least one of {first modulation mode, first coding rate, first channel quality indicator}. Measurements on the first wireless signal, which is transmitted by P1 antenna ports, are used to determine the first information, where P1 is a positive integer. The calculation of the first information assumes that the transmit power of the antenna port is increased by a first ratio. The P1 antenna ports are associated with at least one of {the first antenna port group, the first antenna port}. The first wireless signal is the target wireless signal of the first type, and the P1 antenna ports form the target antenna port group; or the first wireless signal is a part of the target wireless signal of the first type, so the The P1 antenna ports are a subset of the target antenna port group.

As an embodiment, the above-mentioned user equipment is characterized in that the first receiving module is further configured to receive the first signaling. Wherein, the first signaling is used to determine {air interface resources occupied by the L first-type wireless signals, where L, the air interface resources occupied by the first wireless signals, the P1, the At least one of the first ratio}, the air interface resources include at least one of {time domain resources, frequency domain resources, code domain resources}.

As an embodiment, the above-mentioned user equipment is characterized in that the first receiving module is further configured to receive second signaling. Wherein, the second signaling is used to determine {the air interface resources occupied by the Q second type wireless signals, the Q, the air interface resources occupied by the second wireless signals, the P2, the target threshold, at least one of the reference channel quality }.

As an embodiment, the above-mentioned user equipment is characterized by further comprising a third receiving module: configured to receive a third wireless signal. Wherein, at least one of {the first information, the second information, and the third information} is used to generate the third wireless signal.

The invention discloses a base station device used for multi-antenna transmission, which includes the following modules:

- The second sending module: sending Q second type wireless signals;

-Second receiving module: used to receive third information.

The Q second-type wireless signals are respectively sent by Q antenna port groups, and the antenna port groups include a positive integer number of antenna ports. The Q is a positive integer. The third information is used to determine the first antenna port. The first antenna port is one antenna port in a first antenna port group, and the first antenna port group is one antenna port group in the Q antenna port groups. The first antenna port group includes P2 of the antenna ports, where P2 is a positive integer greater than 1. The second wireless signal is one second-type wireless signal among the Q second-type wireless signals. The second wireless signal is transmitted by the first antenna port group. The first antenna port corresponds to the first channel quality, and the first channel quality is not lower than the sum of the reference channel quality and the target threshold.

As an embodiment, the above-mentioned base station device is characterized in that, the second sending module is further configured to send L radio signals of the first type; the second receiving module is further configured to receive second information. Wherein, the L first-type wireless signals are respectively sent by the L antenna port groups. The target first-type wireless signal is one first-type wireless signal among the L first-type wireless signals. The target antenna port group is the antenna port group used for transmitting the target first-type wireless signal among the L antenna port groups. The second information is used to determine the target antenna port group from the L antenna port groups. The L antenna port groups are associated with at least one of {the first antenna port group, the first antenna port}.

As an embodiment, the above-mentioned base station device is characterized in that the second receiving module is further configured to receive the first information. Wherein, the first information is used to determine at least one of {first modulation mode, first coding rate, first channel quality indicator}. Measurements on the first wireless signal, which is transmitted by P1 antenna ports, are used to determine the first information, where P1 is a positive integer. The calculation of the first information assumes that the transmit power of the antenna port is increased by a first ratio. The P1 antenna ports are associated with at least one of {the first antenna port group, the first antenna port}. The first wireless signal is the target wireless signal of the first type, and the P1 antenna ports form the target antenna port group; or the first wireless signal is a part of the target wireless signal of the first type, so the The P1 antenna ports are a subset of the target antenna port group.

As an embodiment, the above-mentioned base station device is characterized in that the second sending module is further configured to send the first signaling. Wherein, the first signaling is used to determine {air interface resources occupied by the L first-type wireless signals, where L, the air interface resources occupied by the first wireless signals, the P1, the At least one of the first ratio}, the air interface resources include at least one of {time domain resources, frequency domain resources, code domain resources}.

As an embodiment, the above-mentioned base station device is characterized in that the second sending module is further configured to send second signaling. Wherein, the second signaling is used to determine {the air interface resources occupied by the Q second type wireless signals, the Q, the air interface resources occupied by the second wireless signals, the P2, the target threshold, at least one of the reference channel quality }.

As an embodiment, the above-mentioned base station device is characterized in that the third sending module is further configured to send a third wireless signal. Wherein, at least one of {the first information, the second information, and the third information} is used to generate the third wireless signal.

Description of drawings

Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

FIG. 1 shows a flowchart of multi-antenna transmission according to one embodiment of the present invention.

Fig. 2 shows {first signaling, second signaling, first information, second information, third information, first wireless signal, second wireless signal, third wireless signal according to an embodiment of the present invention } Schematic diagram of resource mapping in the time domain.

FIG. 3 shows a schematic diagram of {first antenna port group, first antenna port} according to an embodiment of the present invention.

FIG. 4 shows a schematic diagram of the association of P1 antenna ports and the first antenna port according to an embodiment of the present invention.

FIG. 5 shows a schematic diagram of the association of L antenna port groups with the first antenna port and the association of the third wireless signal with the target antenna port group according to an embodiment of the present invention.

FIG. 6 shows a structural block diagram of a processing apparatus used in a UE according to an embodiment of the present invention.

FIG. 7 shows a structural block diagram of a processing apparatus used in a base station according to an embodiment of the present invention.

Detailed ways

Example 1

Embodiment 1 illustrates a flowchart of multi-antenna transmission, as shown in FIG. 1 . In FIG. 1, the base station N1 is the serving cell maintenance base station of the UE U2. In Figure 1, the steps in block F1, block F2, block F3, block F4 and block F5 are respectively optional. Wherein, when block F4 is selected, the first wireless signal is a target first-type wireless signal in the L first-type wireless signals; or, the first wireless signal is a target first-type wireless signal part.

For N1, send the second signaling in step S11; send Q second type wireless signals in step S12; receive the third information in step S13; send the first signaling in step S14; send in step S16 L wireless signals of the first type; receiving the second information in step S17; receiving the first information in step S18; sending a third wireless signal in step S19.

For U2, receive the second signaling in step S21; receive Q second type wireless signals in step 22; send third information in step 23; receive the first signaling in step S24; receive in step S26 L wireless signals of the first type; the second information is sent in step S27; the first information is sent in step S28; the third wireless signal is received in step S29.

In Embodiment 1, the first wireless signal is sent by the base station N1 using P1 antenna ports, and the measurement of the first wireless signal by the UE U2 is used to determine the first information, and the P1 is a positive integer. The first information is used by the base station N1 to determine at least one of {first modulation mode, first coding rate, first channel quality indicator}. The calculation of the first information by the UE U2 assumes that the transmit power of the antenna port is increased by a first ratio. The P1 antenna ports are associated with the first antenna port. The L radio signals of the first type are respectively sent by the base station N1 using L antenna port groups, and the antenna port group includes a positive integer number of antenna ports. The target first-type wireless signal is one first-type wireless signal among the L first-type wireless signals. The target antenna port group is the antenna port group among the L antenna port groups that is used by the base station N1 to transmit the target first-type wireless signal. The second information is used by the base station N1 to determine the target antenna port group from the L antenna port groups. The Q second-type wireless signals are respectively sent by the base station N1 using Q antenna port groups, and the antenna port group includes a positive integer number of antenna ports. The Q is a positive integer. The third information is used by the base station N1 to determine at least one of {first antenna port group, first antenna port}. The first antenna port is one antenna port in a first antenna port group, and the first antenna port group is one antenna port group in the Q antenna port groups. The first antenna port group includes P2 of the antenna ports, where P2 is a positive integer greater than 1. The second wireless signal is a second-type wireless signal among the Q second-type wireless signals. The second wireless signal is transmitted by the first antenna port group. The first antenna port corresponds to the first channel quality, and the first channel quality is not lower than the sum of the reference channel quality and the target threshold. The first signaling is used by the UE U2 to determine {the air interface resources occupied by the L first-type wireless signals, the L, the air interface resources occupied by the first wireless signals, the P1, the At least one of the first ratio}, the air interface resources include at least one of {time domain resources, frequency domain resources, code domain resources}. The second signaling is used by UE U2 to determine {the air interface resources occupied by the Q second-type wireless signals, the Q, the air interface resources occupied by the second wireless signals, the P2, the target threshold, at least one of the reference channel quality }. The third information is used by the base station N1 to determine at least one of {the target threshold, the first channel quality}. At least one of {the first information, the second information, the third information} is used by the base station N1 to generate the third wireless signal.

As a sub-embodiment 1 of Embodiment 1, the first wireless signal is the target first-type wireless signal, and the P1 antenna ports form the target antenna port group.

As a sub-embodiment 2 of embodiment 1, the first wireless signal is a part of the target first-type wireless signal, and the P1 antenna ports are a subset of the target antenna port group.

As sub-embodiment 3 of embodiment 1, the P1 antenna ports are associated with the first antenna port.

As a sub-embodiment 4 of embodiment 1, the L antenna port groups are associated with the first antenna port.

As a sub-embodiment 5 of the embodiment 1, the first information is used by the base station N1 to determine {first modulation mode, first coding rate}.

As a sub-embodiment 6 of the embodiment 1, the third information is used by the base station N1 to determine {first antenna port group, first antenna port}.

As a sub-embodiment 7 of the embodiment 1, the first signaling is used by the UE U2 to determine {the air interface resources occupied by the L radio signals of the first type, the L, the P1, the first ratio}, the air interface resources include {time domain resources, frequency domain resources, code domain resources}.

As a sub-embodiment 8 of the embodiment 1, the second signaling is used by the UE U2 to determine {air interface resources occupied by the Q second-type radio signals, the Q, the P2}.

As a sub-embodiment 9 of the embodiment 1, the third information is used by the base station N1 to determine the target threshold.

As a sub-embodiment 10 of the embodiment 1, {the first information, the second information} is used by the base station N1 to generate the third wireless signal.

As a sub-embodiment 11 of Embodiment 1, one antenna port corresponds to and approximately corresponds to one reference signal, and the sequence corresponding to the reference signal is a pseudo-random sequence.

As a sub-embodiment 12 of Embodiment 1, the time domain resources occupied by the second information are associated with the time domain resources occupied by the target antenna port group, and the time domain resources occupied by the third information are related to the time domain resources occupied by the target antenna port group. are associated with the time domain resources occupied by the antenna port groups.

Example 2

Embodiment 2 illustrates {first signaling, second signaling, first information, second information, third information, first wireless signal, second wireless signal, third wireless signal according to an embodiment of the present invention } A schematic diagram of resource mapping in the time domain is shown in FIG. 2 . In Figure 2, a square is a time resource.

In Embodiment 2, the first information and the second information occupy one time resource and are sent on the same time resource. The time resource occupied by the second signaling is before the time resource occupied by the second wireless signal. The time resource occupied by the second wireless signal is before the time resource occupied by the third information. The time resource occupied by the third information is before the time resource occupied by the first signaling. The time resource occupied by the first signaling is before the time resource occupied by the first wireless signal. The time resource occupied by the first wireless signal is before the time resource occupied by {the first information, the second information}. The time resource occupied by the third wireless signal is after the time resource occupied by {the first information, the second information}.

As a sub-embodiment 1 of the embodiment 2, the first signaling is used to determine the time resource occupied by the first wireless signal. The second signaling is used to determine the time resource occupied by the second wireless signal. The first wireless signal is used to determine the time resource occupied by {the first information, the second information}. The second wireless signal is used to determine the time resource occupied by the third information.

As sub-embodiment 2 of embodiment 2, the first signaling and the second signaling are higher layer signaling.

As sub-embodiment 3 of embodiment 2, the first signaling and the second signaling are physical layer signaling.

As a sub-embodiment 4 of embodiment 2, {the first information, the second information} and the third information are transmitted on a physical layer control channel.

As a sub-embodiment 5 of the embodiment 2, {the first information, the second information} and the third information are for the same CSI process (Process).

As a sub-embodiment 6 of the embodiment 2, the first information and the second information belong to one uplink control indication (UCI).

As a sub-embodiment 7 of the embodiment 2, {the first information, the second information} and the third information are transmitted on a physical layer data channel.

As a sub-embodiment 8 of embodiment 2, {the first signaling, the second signaling, the first information, the second information, the third information, the first wireless signal, The second wireless signal, the third wireless signal } are orthogonal in time.

As a sub-embodiment 9 of the embodiment 2, the first wireless signal occupies the entire system bandwidth in the frequency domain.

As a sub-embodiment 10 of Embodiment 2, the first wireless signal occupies a part of the entire system bandwidth in the frequency domain.

As a sub-embodiment 11 of the embodiment 2, the first wireless signal occupies the entire system bandwidth in the frequency domain.

As a sub-embodiment 12 of the embodiment 2, the first wireless signal occupies a part of the entire system bandwidth in the frequency domain.

Example 3

Embodiment 3 shows a schematic diagram of {first antenna port group, first antenna port} according to an embodiment of the present invention, as shown in FIG. 3 .

In Embodiment 3, the Q air interface resources are respectively used to transmit Q second-type wireless signals, and the Q second-type wireless signals respectively correspond to Q antenna port groups. One port in the Q antenna port groups corresponds to one beamforming vector. The Q antenna port groups correspond to Q beamforming vector groups. The first antenna port group is one of the Q antenna port groups. The first antenna port group consists of P2 antenna ports. The P2 antenna ports correspond to the P2 beamforming vectors. The first antenna port is one of the P2 antenna ports. The second wireless signal is a second-type wireless signal among the Q second-type wireless signals. The second wireless signal is transmitted by the first antenna port group. The first antenna port corresponds to the first channel quality, and the first channel quality is not lower than the sum of the reference channel quality and the target threshold.

As a sub-embodiment 1 of the embodiment 3, the P2 is greater than 1.

As a sub-embodiment 2 of the embodiment 3, the P2 is equal to 1.

As a third sub-embodiment of the third embodiment, the number of antenna ports included in any one of the Q antenna port groups is P2.

As a sub-embodiment 4 of the embodiment 3, the Q is greater than 1.

As a sub-embodiment 5 of the embodiment 3, the Q is equal to one.

As a sub-embodiment 6 of the embodiment 3, the first antenna port corresponds to multiple beam directions.

Example 4

Embodiment 4 shows a schematic diagram of the association between P1 antenna ports and the first antenna port according to an embodiment of the present invention, as shown in FIG. 4 .

In Embodiment 4, a subset of beam directions corresponding to the P1 antenna ports is associated with the beam directions corresponding to the first antenna port.

As a sub-embodiment 1 of Embodiment 4, a subset of the beam directions corresponding to the P1 antenna ports is the beam direction corresponding to the first antenna port, as shown in FIG. 4( a ). The first antenna port corresponds to P1 beam directions. Each of the P1 antenna ports corresponds to N1 beam directions. One of the N1 beam directions is one of the P1 beam directions.

As a sub-embodiment 2 of the embodiment 4, an analog beam direction corresponding to the P1 antenna ports is the beam direction corresponding to the first antenna port, as shown in FIG. 4( b ). The first antenna port corresponds to one beam direction, and each of the P1 antenna ports corresponds to N1 analog beam directions. The beam direction corresponding to the first antenna port is one analog beam direction among the N1 analog beam directions. The P1 antenna ports correspond to different digital precoding vectors respectively.

As a sub-embodiment 3 of the embodiment 4, one beam direction corresponding to the P1 antenna ports is within the coverage range of the beam corresponding to the first antenna port, as shown in FIG. 4( c ). The first antenna port corresponds to a wide beam, and each of the P1 antenna ports corresponds to N1 beam directions. One of the N1 beam directions is within the coverage range of the wide beam corresponding to the first antenna port.

As a sub-embodiment 4 of the embodiment 4, among the beam directions associated with the P1 antenna ports, the beam directions unrelated to the first antenna port are associated with other UEs other than the UE.

As a sub-embodiment 5 of the embodiment 4, one of the P1 antenna ports corresponds to N1 beam directions, and the N1 is greater than 1. N2 beam directions of the N1 beam directions are associated with the first antenna port. The first beam direction group is composed of beam directions other than the N2 beam directions among the N1 beam directions. The first beam direction group is associated with M1 antenna ports in the Q antenna port groups. The first channel quality group is composed of M1 channel qualities corresponding to the M1 antenna ports. The first antenna port corresponds to the first channel quality. The difference between the first channel quality and any one channel quality in the first channel quality group is greater than or equal to a second threshold. The second threshold is less than or equal to the target threshold. The second threshold is set by the base station. The target threshold is the difference between the quality of the first channel and the quality of the reference channel. The reference channel quality is the best channel quality corresponding to other antenna ports except the first antenna port obtained by the UE measuring the Q antenna port groups. The UE calculates the first ratio according to N1 and N2. The first ratio is equal to (N1-N2)/N1. The UE's calculation of {first modulation scheme, first coding rate} assumes that the transmit power of the P1 antenna ports is increased by the first ratio.

As a sub-embodiment 6 of the embodiment 4, the N2 is equal to 1.

As a sub-embodiment 7 of the embodiment 4, the N2 is greater than 1.

As a sub-embodiment 8 of the embodiment 4, the P1 is equal to 1.

As a sub-embodiment 9 of the embodiment 4, the P1 is greater than 1.

As the tenth sub-embodiment of the fourth embodiment, one antenna port corresponding to multiple beam directions can be realized by designing the corresponding digital precoding vector and analog beamforming matrix.

Example 5

Embodiment 5 shows a schematic diagram of the association of L antenna port groups with the first antenna port and the association of the third wireless signal with the target antenna port group according to an embodiment of the present invention, as shown in FIG. 5 .

In Embodiment 5, the first antenna port is the first antenna port illustrated in FIG. 3 . The first antenna port corresponds to a wide beam. The wide beam corresponds to L oversampling beam directions. Any one of the L antenna port groups corresponds to P2 analog beam directions. One of the P2 simulated beam directions is one oversampling beam direction among the L oversampling beam directions. The P2 analog beam directions respectively correspond to the P2 first type analog beamforming vectors. Other analog beamforming vectors in the P2 first-type analog beamforming vectors correspond to other antenna ports other than the first antenna port in the first antenna port group in FIG. 3 . The target antenna port group corresponds to the first analog beamforming matrix. The first analog beamforming matrix is composed of the P2 first type analog beamforming vectors. The target antenna port group includes P1 antenna ports, and the P1 antenna ports correspond to P1 digital precoding vectors respectively. The second antenna port is one of the P1 antenna ports. The first digital precoding vector is the digital precoding vector corresponding to the second antenna port. The beamforming vector corresponding to the second antenna port is the product of the first digital precoding vector and the first analog beamforming matrix. The first simulated beam direction is the simulated beam direction corresponding to the target antenna port group among the L oversampling beam directions. The second analog beamforming vector is a first-type analog beamforming vector corresponding to the first analog beam direction. The base station uses the analog beamforming matrix formed by the second analog beamforming vector to transmit the third wireless signal. The {first modulation scheme, first coding rate} included in the first information is used to determine the modulation scheme and coding rate of the third wireless signal. The UE's calculation of {first modulation scheme, first coding rate} assumes that the transmit power of the target antenna port group is increased by a first ratio.

As a sub-embodiment 1 of Embodiment 5, among beam directions associated with one antenna port group of the L antenna port groups, a beam direction unrelated to the first antenna port is associated with other UEs than the UE.

As a sub-Embodiment 2 of Embodiment 5, the L is equal to 1.

As a sub-embodiment 3 of the embodiment 5, the L is greater than 1.

As a sub-embodiment 4 of the embodiment 5, the transmit power of the third signal is increased by a first ratio by the base station.

Example 6

Embodiment 6 illustrates a structural block diagram of a processing apparatus used in a UE, as shown in FIG. 6 .

In FIG. 6 , the UE device 200 is mainly composed of a first receiving module 201 , a first sending module 202 and a third receiving module 203 .

In Embodiment 6, the first receiving module 201 is used to receive the first wireless signal; the first sending module 202 is used to send the first information; and the third receiving module 203 is used to receive the third wireless signal.

In Embodiment 6, the first wireless signal is sent by the base station using P1 antenna ports, the measurement on the first wireless signal is used by the UE to determine the first information, and the P1 is greater than 1. The first information is used by the base station to determine {first modulation scheme, first coding rate}. The calculation of the first information by the UE assumes that the transmit power of the antenna port is increased by a first ratio. The P1 antenna ports are associated with the first antenna port.

As a sub-embodiment 1 of Embodiment 6, the first receiving module 201 is further configured to receive L wireless signals of the first type, and the first sending module 202 is further configured to send second information. The second information is used by the base station to determine the P1 antenna ports. The UE determines the second information according to the measurement of the L radio signals of the first type.

As a sub-embodiment 2 of Embodiment 6, the first receiving module 201 is further configured to receive Q second-type wireless signals, and the first sending module 202 is further configured to send third information. The third information is used by the base station to determine {first antenna port group, first antenna port}. The first antenna port corresponds to the first channel quality, and the first channel quality is not lower than the sum of the reference channel quality and the target threshold. The UE determines the third information according to the measurement of the Q second-type wireless signals.

As sub-embodiment 3 of embodiment 6, the first receiving module 201 is further configured to receive the first signaling. The first signaling is used by the UE to determine {air interface resources occupied by the L radio signals of the first type, the L, the P1, the first ratio}.

As a sub-embodiment 4 of the embodiment 6, the first receiving module 201 is further configured to receive the second signaling. The second signaling is used to determine {air interface resources occupied by the Q second-type wireless signals, the Q, the P2}.

As a sub-embodiment 5 of the embodiment 6, {the first information, the second information} is used by the base station to generate the third wireless signal.

Example 7

Embodiment 7 illustrates a structural block diagram of a processing apparatus used in a base station, as shown in FIG. 7 .

In FIG. 7 , the base station apparatus 300 is mainly composed of a second sending module 301, a second receiving module 302 and a third sending module 303.

In Embodiment 7, the second sending module 301 is used to send the first wireless signal; the second receiving module 302 is used to receive the first information; the third sending module 303 is used to send the third wireless signal.

In Embodiment 7, the first wireless signal is sent by the base station using P1 antenna ports, the measurement on the first wireless signal is used by the UE to determine the first information, and the P1 is greater than 1. The first information is used by the base station to determine {first modulation scheme, first coding rate}. The calculation of the first information by the UE assumes that the transmit power of the antenna port is increased by a first ratio. The P1 antenna ports are associated with the first antenna port.

As a sub-embodiment 1 of Embodiment 7, the second sending module 301 is further configured to send L first-type wireless signals, and the second receiving module 302 is further configured to receive second information. The second information is used by the base station to determine the P1 antenna ports. The UE determines the second information according to the measurement of the L radio signals of the first type.

As a sub-embodiment 2 of Embodiment 7, the second sending module 301 is further configured to send Q second type wireless signals, and the second receiving module 302 is further configured to receive third information. The third information is used by the base station to determine {first antenna port group, first antenna port}. The first antenna port corresponds to the first channel quality, and the first channel quality is not lower than the sum of the reference channel quality and the target threshold. The UE determines the third information according to the measurement of the Q second-type wireless signals.

As the third sub-embodiment of the seventh embodiment, the second sending module 301 is also used to send the first signaling. The first signaling is used by the UE to determine {air interface resources occupied by the L radio signals of the first type, the L, the P1, the first ratio}.

As a sub-embodiment 4 of the embodiment 7, the second sending module 301 is further configured to send the second signaling. The second signaling is used by the UE to determine {air interface resources occupied by the Q second-type radio signals, the Q, the P2}.

As a sub-embodiment 5 of the embodiment 7, {the first information, the second information} is used by the base station to generate the third wireless signal.

Those skilled in the art can understand that all or part of the steps in the above method can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium, such as a read-only memory, a hard disk or an optical disk. Optionally, all or part of the steps in the foregoing embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module unit in the above-mentioned embodiments may be implemented in the form of hardware, or may be implemented in the form of software function modules, and the present application is not limited to any specific form of the combination of software and hardware. The UE or terminal in the present invention includes, but is not limited to, mobile phones, tablet computers, notebooks, network cards, NB-IOT terminals, eMTC terminals and other wireless communication devices. The base station or system equipment in the present invention includes but is not limited to wireless communication equipment such as macrocell base station, microcell base station, home base station, and relay base station.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (16)

1. A method used in a UE for multi-antenna transmission, comprising the steps of: - Step A. Receive Q second type wireless signals; - step B. sending the third message; The Q second type wireless signals are respectively sent by Q antenna port groups, and the antenna port group includes a positive integer number of antenna ports; the Q is a positive integer; the third information is used to determine the first an antenna port; the first antenna port is one antenna port in a first antenna port group, and the first antenna port group is one antenna port group in the Q antenna port groups; the first antenna port group Including P2 of the antenna ports, the P2 is a positive integer greater than 1; the second wireless signal is a second-type wireless signal in the Q second-type wireless signals; the second wireless signal is The first antenna port group is sent; the first antenna port corresponds to the first channel quality, and the first channel quality is not lower than the sum of the reference channel quality and the target threshold. 2. method according to claim 1, is characterized in that, also comprises the steps: - Step C. Receive L first-type wireless signals; - step D. sending the second message; The L first-type wireless signals are respectively sent by L antenna port groups; the target first-type wireless signal is a first-type wireless signal in the L first-type wireless signals; the target antenna port group is the antenna port group of the L antenna port groups for transmitting the target first-type wireless signal; the second information is used to determine the target antenna port group from the L antenna port groups ; the L antenna port groups and the first antenna port group, at least one of the first antenna ports are associated. 3. method according to claim 2, is characterized in that, described step D also comprises the steps: -D1. Send the first information; The first information is used to determine at least one of the first modulation mode, the first coding rate, and the first channel quality indicator; the measurement on the first wireless signal is used to determine the first information , the first wireless signal is sent by P1 antenna ports, where P1 is a positive integer; the calculation of the first information assumes that the transmit power of the antenna ports is increased by a first ratio; the P1 antenna ports and all the first antenna port group, at least one of the first antenna ports is associated; the first wireless signal is the target first type wireless signal, and the P1 antenna ports constitute the target antenna port or the first wireless signal is a part of the target first type wireless signal, and the P1 antenna ports are a subset of the target antenna port group. 4. method according to claim 3, is characterized in that, described step C also comprises the steps: - Step C0. Receive the first signaling; The first signaling is used to determine the air interface resources occupied by the L first-type wireless signals, where L is the air interface resources occupied by the first wireless signals, and the P1 is the first wireless signal. At least one of a ratio of five, the air interface resources include at least one of time domain resources, frequency domain resources, and code domain resources. 5. The method according to any one of claims 1 to 4, wherein the step A further comprises the steps of: - step A0. Receive the second signaling; Wherein, the second signaling is used to determine the air interface resources occupied by the Q second-type wireless signals, the Q, the air interface resources occupied by the second wireless signals, the P2, the target Threshold, at least one of the six reference channel qualities. 6. The method of any one of claims 1 to 4, wherein the third information is used to determine at least one of the target threshold, the first channel quality. 7. method according to claim 3 or 4, is characterized in that, also comprises the steps: -step E. receiving the third wireless signal; Wherein, at least one of the first information, the second information, and the third information is used to generate the third wireless signal. 8. A method used in a base station for multi-antenna transmission, comprising the steps of: - Step A. Sending Q second type wireless signals; - step B. receiving third information; The Q second type wireless signals are respectively sent by Q antenna port groups, and the antenna port group includes a positive integer number of antenna ports; the Q is a positive integer; the third information is used to determine the first an antenna port; the first antenna port is one antenna port in a first antenna port group, and the first antenna port group is one antenna port group in the Q antenna port groups; the first antenna port group Including P2 of the antenna ports, the P2 is a positive integer greater than 1; the second wireless signal is a second-type wireless signal in the Q second-type wireless signals; the second wireless signal is The first antenna port group is sent; the first antenna port corresponds to the first channel quality, and the first channel quality is not lower than the sum of the reference channel quality and the target threshold. 9. The method according to claim 8, further comprising the steps of: - Step C. Sending L first-type wireless signals; - step D. receiving the second information; The L first-type wireless signals are respectively sent by L antenna port groups; the target first-type wireless signal is a first-type wireless signal in the L first-type wireless signals; the target antenna port group is the antenna port group of the L antenna port groups for transmitting the target first-type wireless signal; the second information is used to determine the target antenna port group from the L antenna port groups ; the L antenna port groups and the first antenna port group, at least one of the first antenna ports are associated. 10. The method according to claim 9, wherein the step D further comprises the following steps: -D1. Receive the first information; The first information is used to determine at least one of the first modulation mode, the first coding rate, and the first channel quality indicator; the measurement on the first wireless signal is used to determine the first information , the first wireless signal is sent by P1 antenna ports, where P1 is a positive integer; the calculation of the first information assumes that the transmit power of the antenna ports is increased by a first ratio; the P1 antenna ports and all the first antenna port group, at least one of the first antenna ports is associated; the first wireless signal is the target first type wireless signal, and the P1 antenna ports constitute the target antenna port or the first wireless signal is a part of the target first type wireless signal, and the P1 antenna ports are a subset of the target antenna port group. 11. The method according to claim 10, wherein the step C further comprises the steps of: - Step C0. Send the first signaling; The first signaling is used to determine the air interface resources occupied by the L first-type wireless signals, where L is the air interface resources occupied by the first wireless signals, and the P1 is the first wireless signal. At least one of a ratio of five, the air interface resources include at least one of time domain resources, frequency domain resources, and code domain resources. 12. The method according to any one of claims 8 to 11, wherein the step A further comprises the following steps: - step A0. Sending the second signaling; Wherein, the second signaling is used to determine the air interface resources occupied by the Q second-type wireless signals, the Q, the air interface resources occupied by the second wireless signals, the P2, the target Threshold, at least one of the six reference channel qualities. 13. The method of any one of claims 8 to 11, wherein the third information is used to determine at least one of the target threshold, the first channel quality. 14. The method according to claim 10 or 11, characterized in that, further comprising the steps of: - step C. sending a third wireless signal; Wherein, at least one of the first information, the second information, and the third information is used to generate the third wireless signal. 15. A user equipment used for multi-antenna transmission, comprising the following modules: - The first receiving module: used to receive Q second type wireless signals; - the first sending module: used to send the third information; The Q second type wireless signals are respectively sent by Q antenna port groups, and the antenna port group includes a positive integer number of antenna ports; the Q is a positive integer; the third information is used to determine the first an antenna port; the first antenna port is one antenna port in a first antenna port group, and the first antenna port group is one antenna port group in the Q antenna port groups; the first antenna port group Including P2 of the antenna ports, the P2 is a positive integer greater than 1; the second wireless signal is a second-type wireless signal in the Q second-type wireless signals; the second wireless signal is The first antenna port group is sent; the first antenna port corresponds to the first channel quality, and the first channel quality is not lower than the sum of the reference channel quality and the target threshold. 16. A base station device used for multi-antenna transmission, comprising the following modules: - The second sending module: sending Q second type wireless signals; - the second receiving module: used to receive the third information; The Q second type wireless signals are respectively sent by Q antenna port groups, and the antenna port group includes a positive integer number of antenna ports; the Q is a positive integer; the third information is used to determine the first an antenna port; the first antenna port is one antenna port in a first antenna port group, and the first antenna port group is one antenna port group in the Q antenna port groups; the first antenna port group Including P2 of the antenna ports, the P2 is a positive integer greater than 1; the second wireless signal is a second-type wireless signal in the Q second-type wireless signals; the second wireless signal is The first antenna port group is sent; the first antenna port corresponds to the first channel quality, and the first channel quality is not lower than the sum of the reference channel quality and the target threshold.

Images