CN108736944A - A kind of method and apparatus for multi-antenna transmission in base station, user equipment - Google Patents
A kind of method and apparatus for multi-antenna transmission in base station, user equipment Download PDFInfo
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- CN108736944A CN108736944A CN201710257332.1A CN201710257332A CN108736944A CN 108736944 A CN108736944 A CN 108736944A CN 201710257332 A CN201710257332 A CN 201710257332A CN 108736944 A CN108736944 A CN 108736944A
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- 230000011664 signaling Effects 0.000 claims description 63
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- 239000000546 pharmaceutical excipient Substances 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 description 17
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- 101150069124 RAN1 gene Proteins 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
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- 238000010295 mobile communication Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0417—Feedback systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0417—Feedback systems
- H04B7/0421—Feedback systems utilizing implicit feedback, e.g. steered pilot signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0636—Feedback format
- H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
- H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
- H04B7/0842—Weighted combining
- H04B7/086—Weighted combining using weights depending on external parameters, e.g. direction of arrival [DOA], predetermined weights or beamforming
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0868—Hybrid systems, i.e. switching and combining
- H04B7/088—Hybrid systems, i.e. switching and combining using beam selection
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Transmission System (AREA)
Abstract
The invention discloses the method and apparatus for multi-antenna transmission in a kind of base station, user equipment.User equipment executes reception and receives L reference signal group successively, receives the first information and receives M reference signal group.First reference signal group is a reference signal group in the L reference signal group.First transmission wave beam be used to send the first reference signal group.M sends wave beam and be used to send the M reference signal group.The first information be used for determining it is described M transmission wave beam beam direction with it is described first send wave beam beam direction the degree of correlation, it is described M send wave beam in one transmission wave beam beam angle and it is described first transmission wave beam beam angle between relativeness at least the former.The present invention can improve the level of resources utilization and the accuracy of beam scanning.
Description
Technical field
The present invention relates to the transmission plans of the wireless signal in wireless communication system, more particularly to the side of multi-antenna transmission
Method and device.
Background technology
(Massive) MIMO (Multi-Input Multi-Output) becomes one of next generation mobile communication on a large scale
Research hotspot.In extensive MIMO, mutiple antennas forms one certain party of beam position and always improves communication by beam shaping
Quality, a transmission wave beam and a reception wave beam constitute a wave beam pair.The relatively narrow wave beam of wider wave beam has
Higher communication stability, the relatively wide wave beam of relatively narrow wave beam have higher beam shaping gain.Therefore, in 3GPP
During RAN-1 is discussed, there is company to propose that wider wave beam can be used for sending the physical layer control for not confirming answer (ACK/NACK)
Signaling processed, relatively narrow wave beam can be used for sending the data for having and confirming and replying, and Ye You companies propose multistage beam scanning application
It is determined in wave beam,
Invention content
Inventors discovered through research that how by effectively and accurately indicate the relevance between multistage beam scanning come
It improves beam scanning efficiency, save beam scanning resource, and how effectively to indicate user equipment to receiving wave beam accordingly
Width is adjusted to improve beam shaping gain and reduces interference and receives, and it is to be solved to be that extensive mimo transmission system has
Problem.
In view of the above-mentioned problems, the present invention provides solutions.It should be noted that in the absence of conflict, this Shen
The feature in embodiment and embodiment please can be arbitrarily combined with each other.For example, the embodiment in the base station of the application and implementation
Feature in example can be applied in user equipment, and vice versa.
The invention discloses a kind of methods being used in the user equipment of multi-antenna transmission, wherein includes the following steps：
Step A. receives L reference signal group；
Step B. receives the first information；
Step C. receives M reference signal group.
Wherein, the first reference signal group is a reference signal group in the L reference signal group.First sends wave beam
It is used to send the first reference signal group.M sends wave beam and be used to send the M reference signal group.Described first
Information be used for determining it is described M transmission wave beam beam direction with it is described first send wave beam beam direction the degree of correlation,
The beam angle of the described M transmission wave beam sent in wave beam sends the phase between the beam angle of wave beam with described first
To relationship } at least the former.The L and M is greater than 1 positive integer.
As one embodiment, the above method is advantageous in that：The degree of correlation sent between beam direction can be used for
It determines the degree of correlation between two-stage beam scanning, to improve the efficiency of multistage beam scanning, saves beam scanning resource.Into one
Step, the beam angle matching for sending wave beam and receiving between wave beam can be used to improve beam shaping gain and reduce interference
It receives, and two-stage sends the relativeness between beam shaping gain and could be used to indicate that user equipment to receiving beam angle
It is adjusted.
As one embodiment, the above method may be used to determine whether that arbitrary neighborhood two-stage wave beam is swept in P grades of beam scannings
Relationship between retouching, the P are no less than 2 positive integer.
As one embodiment, antenna virtualization vector is used to form the wave beam.
As one embodiment, send beam shaping vector and be used to form the transmission wave beam, receive beam shaping to
Amount is used to form the reception wave beam.
As one embodiment, the wave beam is that beam shaping vector is applied to the mutiple antennas factor (antenna
Elements the antenna pattern (antenna pattern)) formed afterwards.
As one embodiment, the transmission wave beam is formed after antenna virtualization vector is applied to the mutiple antennas factor
Radiation pattern (radiation pattern).
As one embodiment, the reception wave beam is to receive beam shaping vector to be applied to shape after the mutiple antennas factor
At electromagnetic radiation receiving intensity pattern.
As one embodiment, the beam direction of a wave beam refers to the sight line (boresight) of the wave beam.
As one embodiment, the beam direction of a wave beam refers to that the corresponding beam shaping vector of the wave beam is made
Sight line for the phased array antennas formed after the mutiple antennas factor.
As one embodiment, the beam direction of a wave beam refers to the radiation pattern corresponding to the wave beam
The maximum direction of antenna gain on (radiation pattern).
As one embodiment, the beam direction of a wave beam refers to that the corresponding beam shaping vector of the wave beam is made
The antenna pattern heaven maximum direction of line gain for being formed after the mutiple antennas factor.
As one embodiment, the beam angle of a wave beam refers to two half power points of the main lobe of the wave beam
Between angle.
As one embodiment, the beam angle of a wave beam refers to the phased array antennas corresponding to the wave beam
Antenna pattern on main lobe two half power points between angle.
As one embodiment, a reference signal group only includes a reference signal.
As one embodiment, a reference signal group includes multiple reference signals.
As one embodiment, the user equipment sends the first channel information, and first channel information is used for really
L1 reference signal group in the fixed L reference signal group, the first reference signal group is the L1 reference signal group
In a reference signal group.The L1 is positive integer.
As one embodiment, the L reference signal group, which be used to measure, obtains L channel quality value, the L1
Reference signal group corresponds to L1 channel quality value best in the L channel quality value.
As one embodiment, the first reference signal group is notified by base station.
As one embodiment, the first reference signal group is by the user equipment to report.
As one embodiment, the reference signal in the reference signal group is CSI-RS (Channel State
Information Reference Signal, channel state information reference signals).
As one embodiment, the reference signal in the reference signal group be SS (Synchronization Signal,
Synchronizing signal).
As one embodiment, the first information is by PDCCH (Downlink Physical Control
Channel, down physical layer control channel) send DCI (Physical Control Information, physical layer control
Information).
As one embodiment, the first information is high-level signaling.
As one embodiment, the first information is RRC signaling.
As one embodiment, the explicit described M beam direction for sending wave beam of instruction of the first information with it is described
First sends the degree of correlation of the beam direction of wave beam.
As one embodiment, described M of the instruction that the first information is shown sends a transmission wave beam in wave beam
Beam angle and it is described first send wave beam beam angle between relativeness
As one embodiment, the implicit described M beam direction for sending wave beam of instruction of the first information with it is described
First sends the degree of correlation of the beam direction of wave beam.
As one embodiment, described M implicit of instruction of the first information sends a transmission wave beam in wave beam
Beam angle and it is described first send wave beam beam angle between relativeness.
As one embodiment, the beam direction of the beam direction of the M transmission wave beam and the first transmission wave beam
The degree of correlation be used to implicitly indicate it is described M send wave beam in one transmission wave beam beam angle with it is described first send out
Send the relativeness between the beam angle of wave beam.
As one embodiment, N number of one received in wave beam receives wave beam and be used to receive the M reference signal
Group.Described M sends wave beam and is reused n times for sending K reference signal group, and the K is multiplying for the M and N
Product.N number of wave beam that receives be used to receive the N for being sent wave beam by described M one sent in wave beam and being repeated transmission respectively
A reference signal group.The N is positive integer.
As one embodiment, the user equipment sends second channel information, and the second channel information is used for really
K1 reference signal signal group in the fixed K reference signal group, the K1 are less than the positive integer of the K.
As one embodiment, the K reference signal group, which be used to measure, obtains K channel quality value, the K1
Reference signal group corresponds to K1 channel quality value best in the K channel quality value.
As one embodiment, the beam direction of the beam direction of the M transmission wave beam and the first transmission wave beam
The degree of correlation by the user equipment be used for determine it is described it is N number of receive wave beam beam direction.
As one embodiment, { N number of beam direction for receiving wave beam and it be used to receive first reference signal
The beam direction of the degree of correlation of the beam direction of the reception wave beam of group, the M transmission wave beam sends wave beam with described first
The degree of correlation of beam direction } positive incidence between the two.
As one embodiment, the beam direction of the beam direction of the M transmission wave beam and the first transmission wave beam
The degree of correlation it is bigger, N number of beam direction for receiving wave beam and be used to receive the received wave of the first reference signal group
The degree of correlation of the beam direction of beam is bigger.
As one embodiment, the beam angle of the described M transmission wave beam sent in wave beam is sent out with described first
The relativeness between the beam angle of wave beam is sent to be used to determine that N number of wave beam for receiving wave beam to be wide by the user equipment
Degree.
As one embodiment, it is described it is N number of receive wave beam in one reception wave beam beam angle and be used for the M
The beam angle positive incidence of a transmission wave beam in a transmission wave beam.
As one embodiment, the beam angle of the described M transmission wave beam sent in wave beam is bigger, described N number of
The beam angle for receiving a reception wave beam in wave beam is bigger.
As one embodiment, the beam direction of the beam direction of the M transmission wave beam and the first transmission wave beam
The degree of correlation refer to it is described M transmission wave beam beam direction and it is described first send wave beam beam direction between angle.
As one embodiment, the beam direction of the beam direction of the M transmission wave beam and the first transmission wave beam
The degree of correlation refer to it is described M send wave beam in beam direction and it is described first send wave beam between angle and first threshold
Relativeness.The first threshold is no less than 0 and the positive real number no more than π.
As one embodiment, the beam direction of the beam direction of the M transmission wave beam and the first transmission wave beam
Between angle be used for determining it is described it is N number of receive wave beam beam direction and be used to receive the first reference signal group
Receive the angle between the beam direction of wave beam.
As one embodiment, the beam direction of the beam direction of the M transmission wave beam and the first transmission wave beam
The degree of correlation refer to it is described M transmission wave beam beam direction with it is described first send wave beam beam direction M angle in
Maximum angle and the first threshold relativeness.
As one embodiment, the beam direction of the beam direction of the M transmission wave beam and the first transmission wave beam
The degree of correlation refer to it is described M transmission wave beam beam direction with it is described first send wave beam beam direction M angle in
Minimum angle and the first threshold relativeness.
As one embodiment, the beam direction of the beam direction of the M transmission wave beam and the first transmission wave beam
The degree of correlation refer to it is described M transmission wave beam beam direction with it is described first send wave beam beam direction M angle
The relativeness of average value and the first threshold.
As one embodiment, described M sends the beam direction and described first that any one in wave beam sends wave beam
The angle for sending the beam direction of wave beam is more than the first threshold.
As a sub- embodiment of above-described embodiment, any one N number of received in wave beam receives the wave of wave beam
The angle of Shu Fangxiang and the beam direction of the reception wave beam for receiving the first reference signal group are more than the first threshold.
As one embodiment, described M sends the beam direction and described first that any one in wave beam sends wave beam
The angle for sending the beam direction of wave beam is equal to the first threshold.
As a sub- embodiment of above-described embodiment, any one N number of received in wave beam receives the wave of wave beam
The angle of Shu Fangxiang and the beam direction of the reception wave beam for receiving the first reference signal group are equal to the first threshold.
As one embodiment, described M sends the beam direction and described first that any one in wave beam sends wave beam
The angle for sending the beam direction of wave beam is less than the first threshold.
As a sub- embodiment of above-described embodiment, any one N number of received in wave beam receives the wave of wave beam
The angle of Shu Fangxiang and the beam direction of the reception wave beam for receiving the first reference signal group are less than the first threshold.
As one embodiment, the first threshold is base station notice.
As one embodiment, the first threshold is to be pre-configured.
As one embodiment, the first threshold is used to the first transmission wave beam and be used to send institute with other
State minimum angle between the beam direction of the transmission wave beam of L reference signal group.
As one embodiment, the first threshold is used to the first transmission wave beam and be used to send institute with other
State maximum angle between the beam direction of the transmission wave beam of L reference signal group.
As one embodiment, described M one sent in wave beam sends wave beam and is used to send first ginseng
Examine the transmission wave beam of signal group.
As a sub- embodiment of above-described embodiment, described M any one sent in wave beam sends the wave of wave beam
Beam width is equal to the described first beam angle for sending wave beam.
As a sub- embodiment of above-described embodiment, N number of one received in wave beam receives wave beam and is used to
The reception wave beam of the first reference signal group is received, the wave beam that any one N number of received in wave beam receives wave beam is wide
Degree is equal to the beam angle for the reception wave beam that be used to receive the first reference signal group.
As one embodiment, the beam direction of the beam direction of the M transmission wave beam and the first transmission wave beam
Angle be one of P candidate value, the P is greater than 1 positive integer.
As one embodiment, the beam direction of the beam direction of the M transmission wave beam and the first transmission wave beam
Angle in one of P candidate range, the P is greater than 1 positive integer.
As one embodiment, the beam angle of the described M transmission wave beam sent in wave beam is sent out with described first
The relativeness between the beam angle of wave beam is sent to be used for determining to be used to receive the reception wave beam of the M reference signal group
Beam angle and be used to receive the first reference signal group reception wave beam beam angle between relativeness.
As one embodiment, described M any one sent in wave beam sends the beam angle of wave beam less than described
First sends the beam angle of wave beam.
As a sub- embodiment of above-described embodiment, it be used to receive the reception wave beam of the M reference signal group
Beam angle is less than the beam angle for the reception wave beam that be used to receive the first reference signal group.
As one embodiment, described M any one sent in wave beam sends the beam angle of wave beam equal to described
First sends the beam angle of wave beam.
As a sub- embodiment of above-described embodiment, it be used to receive the reception wave beam of the M reference signal group
Beam angle is equal to the beam angle for the reception wave beam that be used to receive the first reference signal group.
As one embodiment, described M any one sent in wave beam sends the beam angle of wave beam more than described
First sends the beam angle of wave beam.
As a sub- embodiment of above-described embodiment, it be used to receive the reception wave beam of the M reference signal group
Beam angle is more than the beam angle for the reception wave beam that be used to receive the first reference signal group.
As one embodiment, described M any one beam angle for sending wave beam sent in wave beam is described the
One sends P times of the beam angle of wave beam, and the P is positive real number.
As a sub- embodiment of above-described embodiment, it be used to receive the reception wave beam of the M reference signal group
Beam angle is used to receive P times of the beam angle of the reception wave beam of the first reference signal group.
Specifically, according to an aspect of the present invention, which is characterized in that the first information is also used for determining described
One reference signal group.
As one embodiment, the above method is advantageous in that by network controls next stage beam scanning so as to flexible
Scheduling.
As one embodiment, the explicit instruction of the first information the first reference signal group.
As one embodiment, the implicit instruction of the first information the first reference signal group.
Specifically, according to an aspect of the present invention, which is characterized in that the first information is also used for determining the first threshold
Value, the first threshold are used for determining the wave beam side that the beam direction of the M transmission wave beam sends wave beam with described first
To the degree of correlation.
As one embodiment, the above method is advantageous in that, base station is by carrying out more the configuration of the first threshold
The selected beam scanning of accurate next stage.
As one embodiment, the first information explicit instruction first threshold.
As one embodiment, the first information implicit instruction first threshold.
As one embodiment, the beam direction of the beam direction of the M transmission wave beam and the first transmission wave beam
The degree of correlation be more than the first threshold.
As one embodiment, the beam direction of the beam direction of the M transmission wave beam and the first transmission wave beam
The degree of correlation be equal to the first threshold.
As one embodiment, the beam direction of the beam direction of the M transmission wave beam and the first transmission wave beam
The degree of correlation be less than the first threshold.
As one embodiment, the first threshold is no less than 0 and the positive real number no more than π.
Specifically, according to an aspect of the present invention, which is characterized in that the first information is also used for determining the M
Reference corresponding to a transmission wave beam sends the folder between the beam direction of wave beam and the beam direction of the first transmission wave beam
Angle.
As one embodiment, the above method is advantageous in that the flexibility that can increase multistage beam scanning and accurate
Property.
As one embodiment, the reference that described M explicit of instruction of the first information is sent corresponding to wave beam is sent
Angle between the beam direction of wave beam and the beam direction of the first transmission wave beam.
As one embodiment, the reference that described M implicit of instruction of the first information is sent corresponding to wave beam is sent
Angle between the beam direction of wave beam and the beam direction of the first transmission wave beam.
As one embodiment, described M sends wave beam and corresponds to M beam direction, and it is the M that the reference, which sends wave beam,
The corresponding send wave of the beam direction of mean values of a transmission wave beam medium wave Shu Fangxiang closest to the M beam direction
Beam.
As one embodiment, it is to send wave beam with described first in the M transmission wave beam that the reference, which sends wave beam,
The maximum transmission wave beam of beam direction angle.
As one embodiment, it is to send wave beam with described first in the M transmission wave beam that the reference, which sends wave beam,
Beam direction angle minimum transmission wave beam.
As one embodiment, { beam direction of the M transmission wave beam is with described with reference to the beam direction for sending wave beam
The degree of correlation, it is described M send wave beam corresponding to reference send wave beam beam direction with it is described first transmission wave beam wave
Angle between Shu Fangxiang } in the two be used for determining beam direction and first send wave of the M transmission wave beam
The degree of correlation of the beam direction of beam.
As one embodiment, the first threshold be used for determining it is described M transmission wave beam beam direction with it is described
With reference to the degree of correlation for the beam direction for sending wave beam.
Specifically, according to an aspect of the present invention, which is characterized in that further include following steps：
Step D. receives the second information；
Step E. receives the first physical layer signaling；
Step F. receives first downstream data signal.
Wherein, the second reference signal group is a reference signal group in the M reference signal group.Second information
It is used for determining that the sender of first physical layer signaling assumes the reception wave beam for receiving the first reference signal group
It is used to receive first physical layer signaling, first physical layer signaling is used for determining the first downstream data signal
Sender assume { the reception wave beam for receiving the first reference signal group, for receiving the second reference signal group
Reception wave beam one of be used to receive the first downstream data signal.First physical layer signaling is also used for really
The fixed occupied time resource of first downstream data signal.
As one embodiment, the above method is advantageous in that, can be used for neatly indicating receiving downlink data transmission
It is used to receive wave beam and save the signaling overheads for wave beam instruction.
As one embodiment, second information is high-level signaling.
As one embodiment, second information is RRC signaling.
As one embodiment, second information is physical layer signaling.
As one embodiment, second information is the DCI sent by PDCCH.
As one embodiment, the sender of explicit instruction first physical layer signaling of second information assumes to use
It is used to receive first physical layer signaling in the reception wave beam for receiving the first reference signal group.
As one embodiment, the sender of implicit instruction first physical layer signaling of second information assumes to use
It is used to receive first physical layer signaling in the reception wave beam for receiving the first reference signal group.
As one embodiment, second information indicates the first reference signal group in the L reference signal group
In index value.
As one embodiment, second information includes existing for receiving the reception wave beam of the first reference signal group
For receiving the index value in the reception beam set in the L reference signal group.
As one embodiment, the transmission of the explicit instruction first downstream data signal of first physical layer signaling
Person assumes { the reception wave beam for receiving the first reference signal group, the reception for receiving the second reference signal group
Wave beam } one of be used to receive the first downstream data signal.
As one embodiment, the transmission of the implicit instruction first downstream data signal of first physical layer signaling
Person assumes { the reception wave beam for receiving the first reference signal group, the reception for receiving the second reference signal group
Wave beam } one of be used to receive the first downstream data signal.
As one embodiment, N number of one received in wave beam receives wave beam and be used to receive the M reference signal
Group.Described M sends wave beam and is reused n times for sending K reference signal group, and the K is multiplying for the M and N
Product.N number of wave beam that receives be used to receive the N for being sent wave beam by described M one sent in wave beam and being repeated transmission respectively
A reference signal group.The N is positive integer.The user equipment sends second channel information, the second channel information by with
In determining that P reference signal group set, the reference signal group in the P reference signal group set are the K reference signals
Reference signal group in group.The P is positive integer.First reference signal group set is the institute where the second reference signal group
State the reference signal group set in P reference signal group set.The first reference signal group is integrated into the P reference
Index value in signal group set is used for determining that the sender of the first downstream data signal assumes for receiving described the
The reception wave beam of two reference signal groups be used to receive the first downstream data signal.
As a sub- embodiment of above-described embodiment, a reference signal group set corresponds to N number of received wave
A reception wave beam in beam.
As a sub- embodiment of above-described embodiment, N number of reception is corresponded in a reference signal group set
Multiple reception wave beams that can be used simultaneously in reception downlink signaling or data transmission in wave beam.
As a sub- embodiment of above-described embodiment, first physical layer signaling includes for receiving second ginseng
That examines signal group receives index value of the wave beam in N number of reception wave beam.
As one embodiment, first physical layer signaling is the DCI sent by PDCCH.
As one embodiment, first physical layer signaling is by ePDCCH (enhanced PDCCH, enhancing
PDCCH) the DCI sent.
As one embodiment, occupied by the first physical layer signaling explicit instruction first downstream data signal
Time resource.
As one embodiment, occupied by the first physical layer signaling implicit instruction first downstream data signal
Time resource.
As one embodiment, the occupied time resource of first downstream data signal is continuous OFDM
(Orthogonal Frequency Division Multiplexing) symbol
As one embodiment, the occupied time resource of first downstream data signal is discontinuous OFDM symbols
Number.
The invention discloses a kind of methods being used in the base station equipment of multi-antenna transmission, wherein includes the following steps：
Step A. sends L reference signal group；
Step B. sends the first information；
Step C. sends M reference signal group.
Wherein, the first reference signal group is a reference signal group in the L reference signal group.First sends wave beam
It is used to send the first reference signal group.M sends wave beam and be used to send the M reference signal group.Described first
Information be used for determining it is described M transmission wave beam beam direction with it is described first send wave beam beam direction the degree of correlation,
The beam angle of the described M transmission wave beam sent in wave beam sends the phase between the beam angle of wave beam with described first
To relationship } at least the former.The L and M is greater than 1 positive integer.
Specifically, according to an aspect of the present invention, which is characterized in that the first information is also used for determining described
One reference signal group.
Specifically, according to an aspect of the present invention, which is characterized in that the first information is also used for determining the first threshold
Value, the first threshold are used for determining the wave beam side that the beam direction of the M transmission wave beam sends wave beam with described first
To the degree of correlation.
Specifically, according to an aspect of the present invention, which is characterized in that the first information is also used for determining the M
Reference corresponding to a transmission wave beam sends the folder between the beam direction of wave beam and the beam direction of the first transmission wave beam
Angle.
Specifically, according to an aspect of the present invention, which is characterized in that further include following steps：
Step D. sends the second information；
Step E. sends the first physical layer signaling；
Step F. sends first downstream data signal.
Wherein, the second reference signal group is a reference signal group in the M reference signal group.Second information
It is used for determining that the sender of first physical layer signaling assumes the reception wave beam for receiving the first reference signal group
It is used to receive first physical layer signaling, first physical layer signaling is used for determining the first downstream data signal
Sender assume { the reception wave beam for receiving the first reference signal group, for receiving the second reference signal group
Reception wave beam one of be used to receive the first downstream data signal.First physical layer signaling is also used for really
The fixed occupied time resource of first downstream data signal.
The invention discloses a kind of user equipmenies being used for multi-antenna transmission, wherein including following module：
- the first receiving module：It is used to receive L reference signal group；
- the second receiving module：It is used to receive the first information；
Third receiving module：It is used to receive M reference signal group.
Wherein, the first reference signal group is a reference signal group in the L reference signal group.First sends wave beam
It is used to send the first reference signal group.M sends wave beam and be used to send the M reference signal group.Described first
Information be used for determining it is described M transmission wave beam beam direction with it is described first send wave beam beam direction the degree of correlation,
The beam angle of the described M transmission wave beam sent in wave beam sends the phase between the beam angle of wave beam with described first
To relationship } at least the former.The L and M is greater than 1 positive integer.
As one embodiment, above-mentioned user equipment is characterized in that, the first information is also used for determining described
One reference signal group.
As one embodiment, above-mentioned user equipment is characterized in that, the first information is also used for determining the first threshold
Value, the first threshold are used for determining the wave beam side that the beam direction of the M transmission wave beam sends wave beam with described first
To the degree of correlation.
As one embodiment, above-mentioned user equipment is characterized in that, the first information is also used for determining the M
Send the angle between the beam direction and the beam direction of the first transmission wave beam of the reference transmission wave beam corresponding to wave beam.
As one embodiment, above-mentioned user equipment is characterized in that, the third receiving module also be used to connect successively
The second information is received, the first physical layer signaling is received and receives first downstream data signal.Wherein, the second reference signal group is described
A reference signal group in M reference signal group.Second information is used for determining the hair of first physical layer signaling
The person of sending assumes to be used to receive first physical layer signaling for receiving the reception wave beam of the first reference signal group, described
First physical layer signaling is used for determining that the sender of the first downstream data signal assumes { for receiving first reference
The reception wave beam of signal group, the reception wave beam for receiving the second reference signal group } one of be used to receive described
One downlink data signal.First physical layer signaling is also used for determining the first downstream data signal occupied time
Resource.
The invention discloses a kind of base station equipments being used for multi-antenna transmission, wherein including following module：
- the first sending module：It is used to send L reference signal group；
- the second sending module：It is used to send the first information；
Third sending module：It is used to send M reference signal group.
Wherein, the first reference signal group is a reference signal group in the L reference signal group.First sends wave beam
It is used to send the first reference signal group.M sends wave beam and be used to send the M reference signal group.Described first
Information be used for determining it is described M transmission wave beam beam direction with it is described first send wave beam beam direction the degree of correlation,
The beam angle of the described M transmission wave beam sent in wave beam sends the phase between the beam angle of wave beam with described first
To relationship } at least the former.The L and M is greater than 1 positive integer.
As one embodiment, above-mentioned base station equipment is characterized in that, the first information is also used for determining described
One reference signal group.
As one embodiment, above-mentioned base station equipment is characterized in that, the first information is also used for determining the first threshold
Value, the first threshold are used for determining the wave beam side that the beam direction of the M transmission wave beam sends wave beam with described first
To the degree of correlation.
As one embodiment, above-mentioned base station equipment is characterized in that, the first information is also used for determining the M
Send the angle between the beam direction and the beam direction of the first transmission wave beam of the reference transmission wave beam corresponding to wave beam.
As one embodiment, above-mentioned base station equipment is characterized in that, the third sending module also be used to send out successively
The second information is sent, the first physical layer signaling is sent and sends first downstream data signal.Wherein, the second reference signal group is described
A reference signal group in M reference signal group.Second information is used for determining the hair of first physical layer signaling
The person of sending assumes to be used to receive first physical layer signaling for receiving the reception wave beam of the first reference signal group, described
First physical layer signaling is used for determining that the sender of the first downstream data signal assumes { for receiving first reference
The reception wave beam of signal group, the reception wave beam for receiving the second reference signal group } one of be used to receive described
One downlink data signal.First physical layer signaling is also used for determining the first downstream data signal occupied time
Resource.
It is compared with traditional scheme as one embodiment, the present invention has following advantage：
Support flexibly accurately multistage beam scanning；
Improve beam shaping gain；
Improve the level of resources utilization for being used for multistage beam scanning；
Reduce signaling overheads.
Description of the drawings
By read with reference in the following drawings to being described in detail made by non-limiting embodiment, other spies of the invention
Sign, objects and advantages will become more apparent：
Fig. 1 shows the flow chart of wireless transmission according to an embodiment of the invention；
Fig. 2 shows the schematic diagrames of the first reference signal group according to an embodiment of the invention and M transmission wave beam；
Fig. 3 shows that the beam direction and first of M transmission wave beam according to an embodiment of the invention sends wave beam
Beam direction the degree of correlation be not more than first threshold schematic diagram.
Fig. 4 shows that the reference that M according to an embodiment of the invention sends corresponding to wave beam sends the wave of wave beam
Shu Fangxiang and described first sends the schematic diagram of the angle between the beam direction of wave beam；
Fig. 5 shows the structure diagram according to an embodiment of the invention for the processing unit in user equipment；
Fig. 6 shows the structure diagram according to an embodiment of the invention for the processing unit in base station equipment.
Embodiment 1
Embodiment 1 illustrates the flow chart of wireless transmission, as shown in Fig. 1.In fig. 1, base station N1 is the clothes of UE U2
Cell of being engaged in maintains base station.In attached drawing 1, the step in box F1 is optional.
For N1, L reference signal group is sent in step s 11；The first information is sent in step s 12；In step S13
M reference signal group of middle transmission；The second information is sent in step S14；The first physical layer signaling is sent in step S15；?
First downstream data signal is sent in step S16.
For U2, L reference signal group is received in the step s 21；The first information is received in step S22；In step S23
M reference signal group of middle reception；The second information is received in step s 24；The first physical layer signaling is received in step s 25；?
First downstream data signal is received in step S26.
In embodiment 1, the first reference signal group is a reference signal group in L reference signal group.First sends
Wave beam is by N1 for sending the first reference signal group.M sends wave beam by N1 for sending M reference signal group.First
Information is used to determine that { beam direction of the M transmission wave beam to be related to the beam direction that described first sends wave beam by U2
Degree, between the beam angle and the beam angle of the first transmission wave beam of the described M transmission wave beam sent in wave beam
Relativeness at least the former.The L and M is greater than 1 positive integer.
As the sub- embodiment 1 of embodiment 1, the first information is also by U2 for determining the first reference signal group.
As the sub- embodiment 2 of embodiment 1, the first information is also by U2 for determining first threshold, first threshold
Value is used to determine the degree of correlation of the beam direction and the beam direction of the first transmission wave beam of the M transmission wave beam by U2.
As the sub- embodiment 3 of embodiment 1, the first information also by U2 for determine it is described M send wave beam pair
The reference answered sends the angle between the beam direction of wave beam and the beam direction of the first transmission wave beam.
As the sub- embodiment 4 of embodiment 1, the step in box F1 exists, and the second reference signal group is the M reference
A reference signal group in signal group.Second information is by U2 for determining that N1 assumes for receiving the first reference signal group
Reception wave beam by U2 for receiving first physical layer signaling, first physical layer signaling is by U2 for determining that N1 assumes
In { the reception wave beam for receiving the first reference signal group, the reception wave beam for receiving the second reference signal group }
One of by U2 for receiving the first downstream data signal.First physical layer signaling is also by U2 for determining described first
The occupied time resource of downlink data signal.
In the case of not conflicting, above-mentioned sub- embodiment 1-4 can be combined arbitrarily.
Embodiment 2
Embodiment 2 illustrates the first reference signal group and M transmission wave beam, as shown in Fig. 2.
In example 2, in the first stage, L reference signal group is used for channel measurement, and L0 sends wave beam and L1
It receives wave beam and forms L wave beam to be used to send and receive the L reference signal group.The L0, the L1 and the L are
Positive integer.The L is the product of the L0 and the L1.First reference signal group is one in the L reference signal group
Reference signal group.The wave beam of first transmission wave beam and the first reception wave beam composition is to be used to send and receive first reference
Signal group.
In example 2, in second stage, K reference signal group is used for channel measurement, and M sends wave beam and N number of connect
It is multiplying for the M and N to be used to send and receive the K reference signal group, the K to receive wave beam and form K wave beam
Product.Base station indicates that the beam direction of UE (User Equipment, user equipment) the M transmission wave beams is sent with described first
The beam direction of wave beam is high related, and the beam angle of the M transmission wave beam is less than the described first wave beam for sending wave beam
Width.The UE receives the smaller N of the high related and beam angle of wave beam after receiving above-mentioned instruction, using to described first
A reception wave beam carries out reception beam scanning to the K reference signal group.
As the sub- embodiment 1 of embodiment 2, it is used to form the described first beam shaping vector sum quilt for sending wave beam
The beam shaping vector length for being used to form the transmission wave beam that described M sends in wave beam is identical, is used to form described
The beam shaping vector of first transmission wave beam is that (Discrete Fourier Transform, discrete fourier become by a DFT
Change) vector in coefficient and zero composition vector, be used to form it is described M send wave beam in one send wave beam wave beam
Excipient vector is DFT vectors.
As the sub- embodiment 2 of embodiment 2, the UE reports L1 reference signal group to join at described L to the base station
The index value in signal group is examined, the L1 is less than the positive integer of the L, and the first reference signal group is the L1 reference
A reference signal group in signal group.
As the sub- embodiment 3 of embodiment 2, the base station indicates the first reference signal group described in the UE.
As the sub- embodiment 4 of embodiment 2, the UE reports K1 reference signal group to join at described K to the base station
Examine the index value in signal group, the corresponding K1 wave beam of the K1 reference signal group to by the base station for determining follow-up number
According to wave beam pair used in transmission, the K1 is less than the positive integer of the K.
As the sub- embodiment 5 of embodiment 2, the beam direction of the M transmission wave beam sends wave beam with described first
Any one angle in M angle between beam direction is less than first threshold, the first threshold be greater than 0 and less than π/
2 positive real number.
As the sub- embodiment 6 of embodiment 2, the described M M angle sent between wave beam and the first transmission wave beam
In any one angle be less than described first to send other L0-1 that wave beam is sent with described L0 in beam shaping vector a
Send the minimum angle in L0-1 angle between beam shaping vector.
Embodiment 3
Embodiment 3 illustrates M transmission wave beam and the degree of correlation of the first transmission wave beam is not more than first threshold, such as attached drawing 3
It is shown.In fig. 3, the ellipse representation first of dotted line sends wave beam, and ellipse representation M of solid line sends a hair in wave beam
Wave beam, dotted arrow is sent to indicate beam direction.
In embodiment 3, there are M between the beam direction and the beam direction of the first transmission wave beam of M transmission wave beam
Angle, the M are equal to 4.The beam direction of the first transmission wave beam is the mean value of the beam direction of the M transmission wave beam.
The value of first threshold is 0 between pi/2.Maximum angle in the M angle is not more than first threshold.
As the sub- embodiment 1 of embodiment 3, the first threshold is equal to π/3.
Embodiment 4
Embodiment 4 illustrates the reference that M sends corresponding to wave beam and sends the beam direction of wave beam and first transmission
Angle between the beam direction of wave beam, as shown in Fig. 4.In figure 4, the ellipse representation first of dotted line sends wave beam, real
Ellipse representation M of line sends a transmission wave beam in wave beam, and dotted arrow indicates beam direction.
In example 4, with reference to send wave beam beam direction be M send wave beam beam direction mean value, first
Angle is the angle sent with reference to the beam direction for sending wave beam and first between beam direction.First angle by with
Family equipment is used to determine described with reference to the direction for sending wave beam.First threshold is by the user equipment for determining the M hair
Send the beam direction of wave beam and the degree of correlation with reference to the beam direction for sending wave beam.Described M sends in wave beam except described
It is not more than first threshold with the angle with reference to the beam direction for sending wave beam with reference to the wave beam that sends sent except wave beam
Value.
As the sub- embodiment 1 of embodiment 4, first angle and the first threshold are used for really by the user equipment
The fixed beam direction for receiving the reception wave beam for sending the reference signal group that wave beam is sent by described M.
Embodiment 5
Embodiment 5 illustrates the structure diagram for the processing unit in user equipment, as shown in Fig. 5.UE devices 200
Mainly by the first receiving module, the second receiving module and third receiving module composition.
In embodiment 5, the first receiving module is for receiving L reference signal group, and the second receiving module is for reception the
One information, third receiving module is for receiving M reference signal group.
In embodiment 5, the first reference signal group is a reference signal group in the L reference signal group.First
It sends wave beam and be used to send the first reference signal group.M sends wave beam and be used to send the M reference signal group.
The first information is used for determining the { beam direction that the beam direction of the M transmission wave beam sends wave beam with described first
The degree of correlation, it is described M send wave beam in one transmission wave beam beam angle with it is described first transmission wave beam wave beam it is wide
Relativeness between degree } at least the former.The L and M is greater than 1 positive integer.
As the sub- embodiment 1 of embodiment 5, the first information is also used for determining the first reference signal group.
As the sub- embodiment 2 of embodiment 5, the first information is also used for determining first threshold, the first threshold
It is used for determining the degree of correlation for the beam direction that the beam direction of the M transmission wave beam sends wave beam with described first.
As the sub- embodiment 3 of embodiment 5, the first information is also used for determining that described M sends corresponding to wave beam
Reference send wave beam beam direction and it is described first send wave beam beam direction between angle.
As the sub- embodiment 4 of embodiment 5, the third receiving module 203 also be used to receive the second information successively, connect
It receives the first physical layer signaling and receives first downstream data signal.Wherein, the second reference signal group is the M reference signal group
In a reference signal group.Second information is used for determining that the sender of first physical layer signaling assumes for connecing
The reception wave beam for receiving the first reference signal group be used to receive first physical layer signaling, first physical layer signaling
It is used for determining that the sender of the first downstream data signal assumes the { received wave for receiving the first reference signal group
Beam, the reception wave beam for receiving the second reference signal group } one of be used to receive the first downstream data signal.
First physical layer signaling is also used for determining the occupied time resource of first downstream data signal.
Embodiment 6
Embodiment 6 illustrates the structure diagram for the processing unit in base station equipment, as shown in Fig. 6.Base station equipment
300 mainly by the first sending module, the second sending module and third sending module composition.
In embodiment 6, the first sending module is for sending L reference signal group, and the second sending module is for transmission the
One information, third sending module is for sending M reference signal group.
In embodiment 6, the first reference signal group is a reference signal group in the L reference signal group.First
It sends wave beam and be used to send the first reference signal group.M sends wave beam and be used to send the M reference signal group.
The first information is used for determining the { beam direction that the beam direction of the M transmission wave beam sends wave beam with described first
The degree of correlation, it is described M send wave beam in one transmission wave beam beam angle with it is described first transmission wave beam wave beam it is wide
Relativeness between degree } at least the former.The L and M is greater than 1 positive integer.
As the sub- embodiment 1 of embodiment 6, the first information is also used for determining the first reference signal group.
As the sub- embodiment 2 of embodiment 6, the first information is also used for determining first threshold, the first threshold
It is used for determining the degree of correlation for the beam direction that the beam direction of the M transmission wave beam sends wave beam with described first.
As the sub- embodiment 3 of embodiment 6, the first information is also used for determining that described M sends corresponding to wave beam
Reference send wave beam beam direction and it is described first send wave beam beam direction between angle.
As the sub- embodiment 4 of embodiment 6, the third sending module 303 also be used to send the second information successively, hair
It send the first physical layer signaling and sends first downstream data signal.Wherein, the second reference signal group is the M reference signal group
In a reference signal group.Second information is used for determining that the sender of first physical layer signaling assumes for connecing
The reception wave beam for receiving the first reference signal group be used to receive first physical layer signaling, first physical layer signaling
It is used for determining that the sender of the first downstream data signal assumes the { received wave for receiving the first reference signal group
Beam, the reception wave beam for receiving the second reference signal group } one of be used to receive the first downstream data signal.
First physical layer signaling is also used for determining the occupied time resource of first downstream data signal.
One of ordinary skill in the art will appreciate that all or part of step in the above method can be referred to by program
Related hardware is enabled to complete, described program can be stored in computer readable storage medium, such as read-only memory, hard disk or light
Disk etc..Optionally, all or part of step of above-described embodiment can also be realized using one or more integrated circuit.Phase
It answers, each modular unit in above-described embodiment, example, in hardware realization may be used, it can also be by the form of software function module
It realizes, the application is not limited to the combination of the software and hardware of any particular form.UE or terminal in the present invention include but not
It is limited to mobile phone, tablet computer, notebook, card of surfing Internet, NB-IOT terminals, the wireless telecom equipments such as eMTC terminals.In the present invention
Base station or system equipment include but not limited to macrocell base stations, microcell base station, Home eNodeB, the wireless communications such as relay base station
Equipment.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification made, equivalent replacement, improve etc., it should be included in the protection of the present invention
Within the scope of.
Claims (12)
1. a kind of method being used in the user equipment of multi-antenna transmission, wherein include the following steps：
Step A. receives L reference signal group；
Step B. receives the first information；
Step C. receives M reference signal group.
Wherein, the first reference signal group is a reference signal group in the L reference signal group.First send wave beam by with
In transmission the first reference signal group.M sends wave beam and be used to send the M reference signal group.The first information
Be used for determining the degree of correlation for the beam direction that the beam direction of the M transmission wave beam sends wave beam with described first, it is described
Opposite pass between the beam angle and the beam angle of the first transmission wave beam of the M transmission wave beam sent in wave beam
System } at least the former.The L and M is greater than 1 positive integer.
2. according to the method described in claim 1, the first information is also used for determining the first reference signal group.
3. method according to claim 1 or 2, which is characterized in that the first information is also used for determining first threshold,
The first threshold is used for determining the beam direction that the beam direction of the M transmission wave beam sends wave beam with described first
The degree of correlation.
4. method according to any one of claim 1-3, the first information is also used for determining the M send wave
The twiddle factor that reference wave beam excipient vector corresponding to beam sends wave beam relative to described first.
5. according to the described method of any one of claim 1-4, which is characterized in that further include following steps：
Step D. receives the second information；
Step E. receives the first physical layer signaling；
Step F. receives first downstream data signal.
Wherein, the second reference signal group is a reference signal group in the M reference signal group.Second information by with
In determine the sender of first physical layer signaling assume for receive the reception wave beam of the first reference signal group by with
In receiving first physical layer signaling, first physical layer signaling is used for determining the hair of the first downstream data signal
The person of sending assumes { the reception wave beam for receiving the first reference signal group, for receiving connecing for the second reference signal group
Receive wave beam one of be used to receive the first downstream data signal.First physical layer signaling is also used for determining institute
State the occupied time resource of first downstream data signal.
6. a kind of method being used in the base station equipment of multi-antenna transmission, wherein include the following steps：
Step A. sends L reference signal group；
Step B. sends the first information；
Step C. sends M reference signal group.
Wherein, the first reference signal group is a reference signal group in the L reference signal group.First send wave beam by with
In transmission the first reference signal group.M sends wave beam and be used to send the M reference signal group.The first information
Be used for determining the degree of correlation for the beam direction that the beam direction of the M transmission wave beam sends wave beam with described first, it is described
Opposite pass between the beam angle and the beam angle of the first transmission wave beam of the M transmission wave beam sent in wave beam
System } at least the former.The L and M is greater than 1 positive integer.
7. according to the method described in claim 6, the first information is also used for determining the first reference signal group.
8. the method described according to claim 6 or 7, which is characterized in that the first information is also used for determining first threshold,
The first threshold is used for determining the beam direction that the beam direction of the M transmission wave beam sends wave beam with described first
The degree of correlation.
9. according to the method described in any one of claim 6-8, the first information is also used for determining the M send wave
The twiddle factor that reference wave beam excipient vector corresponding to beam sends wave beam relative to described first.
10. according to the method described in any one of claim 6-9, which is characterized in that further include following steps：
Step D. sends the second information；
Step E. sends the first physical layer signaling；
Step F. sends first downstream data signal.
Wherein, the second reference signal group is a reference signal group in the M reference signal group.Second information by with
In determine the sender of first physical layer signaling assume for receive the reception wave beam of the first reference signal group by with
In receiving first physical layer signaling, first physical layer signaling is used for determining the hair of the first downstream data signal
The person of sending assumes { the reception wave beam for receiving the first reference signal group, for receiving connecing for the second reference signal group
Receive wave beam one of be used to receive the first downstream data signal.First physical layer signaling is also used for determining institute
State the occupied time resource of first downstream data signal.
11. a kind of user equipment being used for multi-antenna transmission, wherein including following module：
- the first receiving module：It is used to receive L reference signal group；
- the second receiving module：It is used to receive the first information；
Third receiving module：It is used to receive M reference signal group.
Wherein, the first reference signal group is a reference signal group in the L reference signal group.First send wave beam by with
In transmission the first reference signal group.M sends wave beam and be used to send the M reference signal group.The first information
Be used for determining the degree of correlation for the beam direction that the beam direction of the M transmission wave beam sends wave beam with described first, it is described
Opposite pass between the beam angle and the beam angle of the first transmission wave beam of the M transmission wave beam sent in wave beam
System } at least the former.The L and M is greater than 1 positive integer.
12. a kind of base station equipment being used for multi-antenna transmission, wherein including following module：
- the first sending module：It is used to send L reference signal group；
- the second sending module：It is used to send the first information；
Third sending module：It is used to send M reference signal group.
Wherein, the first reference signal group is a reference signal group in the L reference signal group.First send wave beam by with
In transmission the first reference signal group.M sends wave beam and be used to send the M reference signal group.The first information
Be used for determining the degree of correlation for the beam direction that the beam direction of the M transmission wave beam sends wave beam with described first, it is described
Opposite pass between the beam angle and the beam angle of the first transmission wave beam of the M transmission wave beam sent in wave beam
System } at least the former.The L and M is greater than 1 positive integer.
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| CN202110741737.9A CN113489518A (en) | 2017-04-19 | 2017-04-19 | Method and device for multi-antenna transmission in base station and user equipment |
| CN201710257332.1A CN108736944B (en) | 2017-04-19 | 2017-04-19 | Method and device for multi-antenna transmission in base station and user equipment |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020199977A1 (en) * | 2019-04-02 | 2020-10-08 | 上海朗帛通信技术有限公司 | Method and device used in node for wireless communication |
| CN112020077A (en) * | 2019-05-30 | 2020-12-01 | 华为技术有限公司 | Communication method and device |
| WO2021036773A1 (en) * | 2019-08-30 | 2021-03-04 | 华为技术有限公司 | Signal measurement method and device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108736944B (en) | 2021-07-27 |
| CN113489518A (en) | 2021-10-08 |
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