CN108540178A

CN108540178A - A kind of method and apparatus for multi-antenna transmission in base station, user equipment

Info

Publication number: CN108540178A
Application number: CN201710125276.6A
Authority: CN
Inventors: 张晓博
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2017-03-04
Filing date: 2017-03-04
Publication date: 2018-09-14

Abstract

The invention discloses the method and apparatus for multi-antenna transmission in a kind of base station, user equipment.User equipment executes successively receives the first configuration information, receives the second configuration information, receives the first reference signal group and the second reference signal group, sends the first channel state information.Wherein, the first reference signal group and the second reference signal group are the reference signal groups in the first reference signal resource pond.First configuration information is used for determining first reference signal resource pond.Second configuration information is used for determining the first reference signal group and the second reference signal group.The measurement of measurement and the second reference signal group based on the first reference signal group is respectively applied for generating the first channel information and the first interference information.First channel information and the first interference information be used to generate first channel state information.Present invention saves the downlink signaling expenses and reference signal expense of supporting that dynamic disturbance measures.

Description

A kind of method and apparatus for multi-antenna transmission in base station, user equipment

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 is formed one certain party of relatively narrow beam position and is always carried by beam shaping High communication quality.Extensive MIMO can also form different directions by mutiple antennas, while service multiple users, be formed more User MIMO (MU-MIMO) reduces propagation delay time to improve the handling capacity of extensive mimo system.

In the asymmetrical MU-MIMO system of uplink and downlink, base station needs the user equipment to report for indicating to participate in MU-MIMO letter Channel state information.In traditional LTE (Long Term Evolution, long term evolution) system, base station not only indicates UE (User Equipment, user equipment) is reported based on NZP CSI-RS (Non-Zero-Power Channel State Information Reference Signal, non-zero power channel state information reference signals) channel measurement, and Indicate that user equipment to report is based on ZP CSI-RS (Zero-Power Channel State Information Reference Signal interference measurement results) are to measure inter-cell interference for CoMP (Coordinated Multi-Point, multiple spot association Make) transmission.In LTE Release14 and 3GPP NR (New Radio, newly eat dishes without rice or wine) discussion, there are multiple companies to propose that introducing is dynamic The aperiodicity interference measurement of state instruction is to serve the MU-MIMO of Intra-cell.Since there may be a variety of interference by MU-MIMO It is assumed that aperiodic interferometry resource and the brought physical layer control of dynamic instruction for being used to indicate aperiodic interferometry resource The expense of information is a urgent problem to be solved.

Invention content

It, can will be for measuring MU-MIMO channels inventors discovered through research that from the point of view of from the angle of user equipment It is two classes that CSI-RS, which is divided to,：First kind CSI-RS is only applied to triggering channel measurement and reports, and user equipment hypothesis receives The channel of CSI-RS experience is used for the channel of data transmission；Second class CSI-RS be used to trigger interference measurement and report, the use Family equipment assumes to receive that CSI-RS is interference signal in MU-MIMO or there are interference signals.It base station can be in pre-scheduling Be afterwards will likely be scheduled in be together MU-MIMO multiple user equipmenies distribute one it is shared by first kind CSI-RS and the The CSI-RS resource pond of two class CSI-RS compositions, therefore, base station may be used to determine whether the dynamic instruction of first kind CSI-RS To the dynamic instruction of the second class CSI-RS, to save the physical layer control signaling expense of dynamic instruction interferometry resource. Further, multiple user equipmenies use the CSI-RS in the CSI-RS resource pond as first kind CSI-RS for essence in turn Thin channel feedback, to improve the utilization ratio of CSI-RS.

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 the first configuration information；

Step B. receives the second configuration information；

Step C. receives the first reference signal group and the second reference signal group；

Step D. sends the first channel state information.

Wherein, the first reference signal resource pond is by the reference signal and the first reference signal in the first reference signal group Reference signal composition in subset of resources.Any one reference signal in the second reference signal group is first reference Reference signal in signal resource subset.The first reference signal group, the second reference signal group and first reference Signal resource subset respectively includes positive integer reference signal.Any one in first reference signal resource pond is with reference to letter It number will not exist simultaneously in the first reference signal group and in the first reference signal resource subset.First configuration Information is used for determining first reference signal resource pond.Second configuration information is used for { from described first with reference to letter Number resource pool determines the first reference signal group, and described second is determined from the first reference signal resource subset with reference to letter Number group }.Measurement based on the first reference signal group be used to generate the first channel information.Based on second reference signal The measurement of group be used to generate the first interference information.First channel information and the first interference information be used to generate described One channel state information.

As one embodiment, the above method is advantageous in that, using the function of base station pre-scheduling, dynamic instruction is used for First reference signal group of channel measurement and the second reference signal group for interference measurement, and saved the ginseng of dynamic instruction second Examine the signaling overheads of signal group.

As one embodiment, first configuration information is by semi-static signaling bear.

As one embodiment, first configuration information is carried by high-level signaling.

As one embodiment, first configuration information is by RRC (Radio Resource Control, radio resource Control) configure (configuration) signaling or RRC re-matching (Reconfiguration) signaling bears.

As one embodiment, second configuration information is carried by dynamic signaling.

As one embodiment, second configuration information is by PDCCH (Physical Downlink Control Channel, Physical Downlink Control Channel) carrying.

As one embodiment, first configuration information is in a DCI (Downlink Control Information, Downlink Control Information) on.

As one embodiment, first configuration information and second configuration information are carried by dynamic signaling.

As one embodiment, first configuration information and second configuration information belong to a DCI (Downlink Control Information, Downlink Control Information).

As one embodiment, first configuration information and second configuration information belong to different DCI (Downlink Control Information, Downlink Control Information).

As one embodiment, first configuration information is by MAC CE (Medium-Access Control layer Control Element, media access control layer control particle) it carries, second configuration information is carried by DCI.

As one embodiment, the different reference signals corresponds to different antenna ports.

As one embodiment, the antenna port passes through antenna virtualization by more physical antennas (Virtualization) it is formed by stacking.The mapping coefficient of the antenna port to the more physical antennas forms beam shaping Vector is used for the antenna virtualization, forms wave beam.

As one embodiment, first antenna port and the second antenna port are the different antenna ends of any two Mouthful.The physics that the physical channel and the corresponding signal of the second antenna port that the corresponding signal in first antenna port is undergone are undergone Channel cannot be assumed to be it is identical,

As one embodiment, the physical channel that the first signal of a corresponding antenna port is undergone can be used for Infer the physical channel that the second signal of the corresponding identical antenna port is undergone, first signal and second letter Number it is two signals sent in different interface-free resources.

As one embodiment, the interface-free resources are at least one in { time-domain resource, frequency domain resource, code domain resource } It is a.

As one embodiment, the configuration of the first reference signal group or the configuration of the second reference signal group are User equipment specific (UE specific).

As one embodiment, the configuration of the first reference signal group or the configuration of the second reference signal group are Group of user equipments specific (UE group specific).

As one embodiment, the configuration of the first reference signal group or the configuration of the second reference signal group are Wave beam specific (beam specific).

As one embodiment, the configuration in first reference signal resource pond is not the specific (cell of cell Specific).

As one embodiment, the reference signal in the first reference signal group is CSI-RS, and described second with reference to letter Reference signal in number group is DMRS.

As one embodiment, the reference signal in the first reference signal group is NZP CSI-RS, second ginseng It is ZP CSI-RS to examine the reference signal in signal group.

As one embodiment, the first reference signal group and the second reference signal group answering in interface-free resources It is { TDM (Time Division Multiplexing, time division multiplexing), FDM (Frequency Division with mode At least one of Multiplexing, frequency division multiplexing), CDM (Code Division Multiplexing, code division multiplexing) }.

As one embodiment, the time-domain resource and described second shared by reference signal in the first reference signal group The time-domain resource shared by reference signal in reference signal group is not overlapped.

It is not described at least there is a reference signal as one embodiment, in the first reference signal resource subset Reference signal in second reference signal group.

As one embodiment, instruction first reference signal resource pond that first configuration information is shown.

As one embodiment, implicit instruction first reference signal resource pond of first configuration information.

As one embodiment, second configuration information indicates the first reference signal group described first with reference to letter Index in number resource pool.

As one embodiment, the user equipment is according to first configuration information to first reference signal resource The instruction in pond and second configuration information infer first reference signal resource to the instruction of the first reference signal group Subset.

As one embodiment, second configuration information indicates the second reference signal group described first with reference to letter Index in number subset of resources.

As one embodiment, second configuration information indicates the second reference signal group in a manner of bit map Index in the first reference signal resource subset.

As one embodiment, the first reference signal resource subset only includes the ginseng in the second reference signal group Examine signal.Determine that the second reference signal group is exactly from the first reference letter from the first reference signal resource subset The first reference signal resource subset is determined in number resource pool.

As one embodiment, the first reference signal group is by second terminal for assuming the first reference signal group Sender interfered caused by the reception of the second terminal to the user equipment transmission data signal, the second terminal According to the sender for assuming to measure interference information and be sent to the first reference signal group.The second terminal is different In a user equipment of the user equipment.

As one embodiment, first channel information include CRI (CSI-RS Resource Indicator, CSI-RS resource indicates), PMI (Precoding Matrix Indicator, pre-coding matrix instruction), CQI (Channel Quality Indicator), RSRP (Reference Signal Receiving Power, Reference Signal Received Power), RI (Rank Indicator, order instruction), channel linearity combine (linear combination) quantization feedback, covariance matrix At least one of quantization feedback }.

As one embodiment, T1 antenna port be used to send the first reference signal group, based on the T1 The channel measurement of antenna port corresponds to T1 channel quality value respectively, and first channel information is used for determining the T1 day T2 antenna port in line end mouth, the T2 antenna port correspond to T2 best in the T1 channel quality value respectively Channel quality value.

As one embodiment, P1 Vector Groups be used to measure the first reference signal group, the P1 Vector Groups P1 channel quality value is corresponded to respectively, and first channel information is used for determining P2 vector in the P1 Vector Groups Group, the P2 Vector Groups correspond to the P2 best channel quality value in the P1 channel quality value respectively.

As one embodiment, the PMI in first channel information is used for determining the P2 Vector Groups.

As one embodiment, first channel information is by the sender of the first reference signal group for determining For { beam shaping coefficient, pre-coding matrix, MCS (the Modulation and used in the subsequent transmission of the user equipment At least one of Coding Scheme, Modulation and Coding Scheme) }.

As one embodiment, first interference information include CRI (CSI-RS Resource Indicator, CSI-RS resource indicates), PMI (Precoding Matrix Indicator, pre-coding matrix instruction), RSRP (Reference Signal Receiving Power, Reference Signal Received Power), jamming power, channel linearity combines (linear At least one of combination) quantization feedback, the quantization feedback of covariance matrix }.

As one embodiment, the channel quality is { SNR (Signal-to-Noise Ratio) signal-to-noise ratio, SINR One of (Signal-to-Interference-Noise Ratio, Signal to Interference plus Noise Ratio), RSRP }.

As one embodiment, first interference information is used for determining to measure based on the second reference signal group The RSRP arrived.

As one embodiment, first interference information is used for determining to measure based on the second reference signal group The jamming power arrived.

As one embodiment, first interference information is used for determining to measure based on the second reference signal group The estimation interference channel arrived.

As one embodiment, first interference information is made of Q sub- interference informations, the Q sub- interference informations Q sub- reference signal groups in the second reference signal group are corresponded to respectively.The Q sub- reference signal groups correspond to Q difference Interference hypothesis.The Q is positive integer.

As one embodiment, the Q sub- reference signal groups correspond to Q Interference Estimation, the Q Interference Estimation respectively Independently of each other.

As one embodiment, the Q sub- interference informations are respectively used to determine the broadband of the Q sub- reference signal groups Mean receiving power.

As one embodiment, the Q sub- interference informations are respectively used to determine the broadband of the Q sub- reference signal groups Receive general power.

As one embodiment, the Q sub- interference informations are respectively used to determine a sub- reference signal groups of the Q RSRP。

As one embodiment, the first sub- reference signal group is a son reference letter in the Q sub- reference signal groups Number group, the first sub- interference information are correspond to one son of the described first sub- reference signal group in the Q sub- interference informations to interfere Information.T3 antenna port be used to send the described first sub- reference signal group, and the channel based on the T3 antenna port is surveyed Amount corresponds to T3 channel quality value respectively, and the first sub- interference information is used for determining T4 day in the T3 antenna ports Line end mouth, the T4 antenna port correspond to T4 channel quality value worst in the T3 channel quality value.

As one embodiment, the first sub- reference signal group is a son reference letter in the Q sub- reference signal groups Number group, the first sub- interference information are correspond to one son of the described first sub- reference signal group in the Q sub- interference informations to interfere Information.P3 Vector Groups be used to measure the described first sub- reference signal group, and the P3 Vector Groups correspond to P3 channel respectively Mass value, the first sub- interference information are used for determining P4 Vector Groups in the P3 Vector Groups, the P4 vector Group corresponds to the P4 worst channel quality value in the P3 channel quality value respectively.

As one embodiment, the RSRP in RSRP and first interference information in first channel information is by institute The sender of the first reference signal group and the second reference signal group is stated for calculating SIR (Signal-to- Interference Ratio, signal-to-noise ratio).

As one embodiment, the RSRP in first interference information is used by the sender of the second reference signal group In the SLR (Signal-to-Leakage Ratio, signals leakiness ratio) for calculating second terminal.The second terminal is to be based on institute State the second reference signal group do measurement obtain a user equipment in relation to channel information.The second terminal assumes described second The sender of reference signal group is sent to data using the physical channel that the second reference signal group is undergone.

As one embodiment, first interference information is by the sender of the second reference signal group for generating For { beam shaping coefficient, pre-coding matrix, MCS (the Modulation and used in the subsequent transmission of second terminal At least one of Coding Scheme, Modulation and Coding Scheme) }.The second terminal and the user equipment are not same User equipment.

As one embodiment, first channel information includes broadband and subband (subband) quantitative information, and described One interference information only includes wide band quantized information.

As one embodiment, the sender of the sender of the first reference signal group and the second reference signal group It is the same sending device.

As one embodiment, the sender of the sender of the first reference signal group and the second reference signal group It is not the same sending device.

As one embodiment, second configuration information is also used to indicate whether to receive second reference signal Group.

As one embodiment, second configuration information is also used to indicate whether to report the first interference information.

Specifically, according to an aspect of the present invention, which is characterized in that the step A further includes following steps：

Step A0. receives third configuration information；

Wherein, the third configuration information is used for determining N number of candidate reference signals resource pool, first reference signal Resource pool is a candidate reference signals resource pool in N number of candidate reference signals resource pool.The N is being greater than 1 just Integer.

As one embodiment, the above method is advantageous in that, is increased by configuring multiple candidate reference signals resource pools The flexibility of reporting source of channel state information.

As one embodiment, the third configuration information is by semi-static signaling bear, first configuration information and institute The second configuration information is stated to be carried by dynamic signaling.

As one embodiment, the third configuration information is carried by high-level signaling.

As one embodiment, the third configuration information is carried by RRC signaling.

Step A1. receives the first wireless signal；

Step A2. sends second channel status information.

Wherein, K antenna port be used to send first wireless signal, and the second channel status information is used for Determine K1 antenna port in the K antenna port.The first reference signal group is related with the K1 antenna port. The K and K1 is positive integer.

As one embodiment, the above method is advantageous in that, the second channel status information is used for multiple use Family equipment carries out pre-scheduling, so that it is determined that first reference signal resource pond, the first reference signal group and described the The use of two reference signal groups.

As one embodiment, the K antenna port is corresponded with K reference signal respectively.

As one embodiment, first wireless signal is the K reference signal.

As one embodiment, first wireless signal is the OFDM for carrying the K reference signal (Orthogonal Frequency Division Multiplexing, orthogonal frequency division multiplexing) symbol.

As one embodiment, the K reference signal is synchronous reference signal.

As one embodiment, the K antenna port is in synchronizing signal block (Synchronization Signal Block, SS block) on antenna port.

As one embodiment, the K reference signal is mobile reference signal (Mobility RS).

As one embodiment, the configuration of the K reference signal is that cell is specific (cell specific).

As one embodiment, the K antenna port is respectively applied for measuring K channel quality value.The K1 day Line end mouth corresponds to K1 channel quality value best in the K channel quality value.

As one embodiment, the K is greater than 1 positive integer, and the K1 is equal to 1.

As one embodiment, the K antenna port sends wave beam with K respectively and corresponds.The second channel Status information is used for determining the described K K1 transmission wave beam sent in wave beam.

As one embodiment, K time resource unit is respectively applied for sending the K reference signal, at described K Between resource unit and it is described K send wave beam correspond.In the second channel status information time resource instruction by with In determining the K1 antenna port.

As one embodiment, K time frequency unit is respectively applied for sending the K reference signal, the K time-frequency money Source unit and the K transmission wave beam correspond.Time-frequency resource indication in the second channel status information is used for really The fixed K1 antenna port.

As one embodiment, it is analog beam that described K, which sends wave beam,.

As one embodiment, it is digital analog mixed wave beam that described K, which sends wave beam,.

As one embodiment, first antenna port is used to send an antenna end of the first reference signal group Mouthful, the second antenna port is a port in the K1 antenna port.Second configuration information is used for determining described First antenna port and second antenna port are QCL (Quasi Co-located).

As one embodiment, the QCL refers to the corresponding physical channel in the first antenna port and described second day The corresponding physical channel of line end mouth is identical in some or all of large scale characteristic.

As one embodiment, it be used to send the wave beam of the first reference signal group and be used for second antenna The transmission wave beam of port is related.

As one embodiment, the beam direction that be used to send the first reference signal group is being used for described second Within the coverage area of the transmission wave beam of antenna port.

As one embodiment, it be used to receive the wave beam group of first reference signal and be used for second antenna The reception wave beam of port is related.

As one embodiment, the beam direction that be used to receive the first reference signal group is being used for described second Within the coverage area of the reception wave beam of antenna port.

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

Step E. receives second wireless singal.

Wherein, first channel state information be used to generate the second wireless singal.

As one embodiment, the above method is advantageous in that, first channel state information can be used to reduce Inter-user interference, to improve the spectrum efficiency of MU-MIMO transmission.

As one embodiment, the second wireless singal is OFDM symbol.

As one embodiment, the second wireless singal is DFT-S-OFDM (Discrete-Fourier- Transform Spread OFDM, discrete Fourier transform extend orthogonal frequency division multiplexing) symbol.

As one embodiment, MU-MIMO technologies are used for the second wireless singal.

As one embodiment, the second wireless singal is used for the user device transmissions data, meanwhile, it is described Second wireless singal is also used for second terminal transmission data.Wherein, the interface-free resources that the data of the user equipment occupy It is identical with the interface-free resources that the data of the second terminal occupy.First channel information and first interference information are divided It Yong Yu not determine in the user equipment and the second terminal corresponding { beam shaping, pre-coding matrix, MCS } extremely It is one of few.

As one embodiment, Q antenna port be used to send the second wireless singal.

As one embodiment, Q1 antenna port in the Q antenna port be used to send out to the user equipment Data, Q2 antenna port in the Q antenna port are sent to be used for the second terminal transmission data.First letter Road information be used to generate at least one of described Q1 antenna port corresponding { beam shaping, pre-coding matrix, MCS }. First interference information be used to generate in the Q2 antenna port corresponding { beam shaping, pre-coding matrix, MCS } At least one.

As one embodiment, for the first MCS by the user equipment for receiving data, the 2nd MCS is whole by described second End is for receiving data.First channel information be used to generate the first MCS, and first interference information be used to give birth to At the 2nd MCS.

As one embodiment, Q1 antenna port in the Q antenna port is used for channel by the user equipment It measures, Q2 antenna port in the Q antenna port is used for channel measurement by second terminal.The first channel information quilt At least one in { beam shaping matrix, pre-coding matrix } for generating the Q1 antenna port.Described first Interference information be used to generate in { beam shaping matrix, the pre-coding matrix } of the Q2 antenna port at least within it One.

As one embodiment, the Q antenna port is used for channel measurement, institute by the user equipment and second terminal State the first channel information and first interference information be used to generate the Q antenna port it is corresponding beam shaping matrix, Pre-coding matrix } at least one.Wherein, first channel information be used to generate the corresponding { wave beams of the UE Excipient matrix, pre-coding matrix } at least one, first interference information be used to generate the second terminal pair At least one in { beam shaping matrix, the pre-coding matrix } answered.

As one embodiment, { first channel state information, the second channel status information } be used to generate The second wireless singal.

Specifically, according to an aspect of the present invention, which is characterized in that further include in first channel state information Two channel informations, the measurement based on the second reference signal group also be used to generate the second channel information.

As one embodiment, the benefit of the above method is further increased using advanced channel estimation method with reference to letter Number service efficiency and channel estimation precision.

As one embodiment, the reference signal in the second reference signal group is NZP CSI-RS.

As one embodiment, the measurement based on the first reference signal group and the second reference signal group is used for Calculate the second channel information.

As one embodiment, the wide-band width measurement result based on the first reference signal group is used in conjunction with to described Second channel information described in the survey calculation of two reference signal groups.

As one embodiment, the second channel information be used to calculate first interference information.

As one embodiment, survey calculation of the user equipment based on the first reference signal group obtains the first letter Estimate that the measurement based on the second reference signal group obtains second channel estimation in road.First channel estimation and described Two channel estimations be used to be calculated third channel estimation, and the second channel information be used to generate the third channel and estimate The quantized result of meter.The second channel estimation and the third channel estimation be used to be calculated interference channel estimation.Institute State the quantized result that the first interference information be used to generate the interference channel estimation.

Specifically, according to an aspect of the present invention, which is characterized in that first to report configuration be first channel information Report it is corresponding report configuration, second to report configuration be that first interference information reports and corresponding reports configuration.Described second Configuration information is also used for determining { described first reports configuration, and described second reports configuration }.

As one embodiment, the above method, which is advantageous in that, matches channel information and reporting into Mobile state for interference information It sets.

As one embodiment, { described first reports configuration to the explicit instruction of second configuration information, on described second Report configuration }.

As one embodiment, the implicit instruction of second configuration information described first reports configuration, on described second Report configuration }.

As one embodiment, the first reference signal group and the second reference signal group are used for determining institute respectively Stating first reports configuration and described second to report configuration.

As one embodiment, the described first time resource for reporting configuration shared and the first reference signal group when Between relative position between resource be fixed.

As one embodiment, the described second time resource for reporting configuration shared and the second reference signal group when Between relative position between resource be fixed.

Specifically, according to an aspect of the present invention, which is characterized in that { first configuration information, second configuration Information } at least the latter transmitted on physical control channel.

As one embodiment, the above method is advantageous in that, system can carry out reporting source of channel state information cleverer Configuration living.

As one embodiment, first configuration information is RRC signaling, and second configuration information is DCI.

As one embodiment, first configuration information and second configuration information are all DCI.

As one embodiment, first configuration information and second configuration information are on the same DCI.

As one embodiment, first configuration information is on first order DCI, and second configuration information is in the second level On DCI, the first order DCI is sent prior to the second level DCI.

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 the first configuration information；

Step B. sends the second configuration information；

Step C. sends the first reference signal group and the second reference signal group；

Step D. receives the first channel state information.

As one embodiment, the first wave beam group is used for the beam shaping of the first reference signal group, the second wave beam Group is used for the beam shaping of the second reference signal group.

As one embodiment, there is no any one wave beams to exist simultaneously in the first wave beam group and second wave Shu Zuzhong.

As one embodiment, the reference signal in the first reference signal group and first reference signal resource The reference signal of concentration occupies different time resources.

As one embodiment, in the reference signal and the second reference signal group in the first reference signal group Reference signal occupies different time resources.

As one embodiment, first configuration information is sent to multiple user equipmenies.

As one embodiment, first configuration information and second configuration information are sent to multiple users and set It is standby.

As one embodiment, first configuration information is sent to the first group of user equipments, and described second matches confidence Breath is sent to second user equipment group, and the second user equipment group is the subset of first group of user equipments.

As one embodiment, the base station, which is sent to described in the first user equipment and second user equipment first, matches confidence Breath sends the second configuration information, in the first reference signal group of first user equipment to first user equipment Reference signal by the second user equipment for determining interference information, first user equipment described second with reference to letter Reference signal in number group is by the second user equipment for determining channel information.

As one embodiment, the base station sends the first user equipment into this cell and sends described first with confidence Breath and second configuration information, the reference signal in the first reference signal group are interfered by second user equipment for determining Information.First user equipment and the second user equipment are not belonging to the same cell；Alternatively, the base station is not described The serving BS of second user equipment.

As one embodiment, the base station has carried out MU-MIMO pre-schedulings before sending first configuration information.

As one embodiment, the Q sub- reference signal groups are used for channel estimation by Q terminal respectively, and described Q eventually Any one terminal at end assumes that the physical channel of its corresponding sub- reference signal group experience is used in subsequent transmission to it Transmission data.

As one embodiment, some or all of sub- interference information in the Q sub- interference informations is by the base station For combining the interference information being calculated under the first interference hypothesis or signals leakiness information.First interference hypothesis is Different from an interference hypothesis of the Q interference hypothesis.Part in first interference hypothesis and the Q interference hypothesis Interference hypothesis or whole interference hypothesis are related.

As one embodiment, the first user equipment is the recipient of second configuration information.First user sets The first sub- reference signal group in standby the second reference signal group is by first terminal for channel measurement and to the base station Corresponding channel information is fed back, the second sub- reference signal group quilt in the second reference signal group of first user equipment Second terminal is for channel measurement and to the corresponding channel information of the base station feedback.The first terminal is based on first son Reference signal group measurement obtains the first sub- interference information, and the second terminal is obtained based on the described second sub- reference signal group measurement Second sub- interference information.First interference information includes the described first sub- interference information and the second sub- interference information.Institute It states base station and is calculated based on the described first sub- interference information and the second sub- interference information and assume to set first user Standby, the described first terminal and the second terminal be dispatched in identical interface-free resources when being MU-MIMO the first terminal and The second terminal combines the interference to first user equipment.

As one embodiment, the first sub- interference information is the reception power of the described first sub- reference signal group, institute State the reception power that the second sub- interference information is the described second sub- reference signal group.

Step A0. sends third configuration information；

As one embodiment, there are at least two candidate reference signals resources for N number of candidate reference signals resource pool Pond corresponds to different MU-MIMO and assumes.

As one embodiment, there are at least two candidate reference signals resources for N number of candidate reference signals resource pool Pond corresponds to the number of users in different MU-MIMO.

Step A1. sends the first wireless signal；

Step A2. receives second channel status information.

As one embodiment, K wave beam is respectively applied for the K antenna port.

As one embodiment, any two wave beam in the K wave beam differs.

As one embodiment, any one wave beam in the K wave beam is thick wave beam, the first wireless signal quilt For thick beam scanning.Reference signal in the first reference signal group and the second reference signal group is used for for not The thin beam scanning of same thick wave beam.

As one embodiment, the coverage area of the K wave beam is different.

As one embodiment, the K antenna port corresponds to K RF link respectively.

Step E. sends second wireless singal.

As one embodiment, MU-MIMO be used to generate second wireless singal.

As one embodiment, the second wireless singal carries the data for multiple user equipmenies.

As one embodiment, first channel information is used for determining for the first channel information sender's Pre-coding matrix and MCS.

As one embodiment, first interference information be used for determining for second terminal pre-coding matrix and MCS.The second terminal is not the sender of first interference information.

As one embodiment, the second reference signal group is by the second terminal for measuring channel information and sending To the base station.The second terminal assumes that the physical channel of the second reference signal group experience is used to send by the base station For the data of the second terminal.

As one embodiment, it be used to send the second reference signal group for the pre-coding matrix of multiple UE.

As one embodiment, it be used to send the second reference signal group for the beam shaping matrix of multiple UE.

As one embodiment, Q RF be used to send the second reference signal group, Q analog beam excipient vector It is respectively applied for the Q RF.The Q analog beam excipient vector is directed to Q UE respectively.The Q be greater than 1 it is just whole Number.

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 the first configuration information；

- the second receiving module：It is used to receive the second configuration information；

Third receiving module：It is used to receive the first reference signal group and the second reference signal group；

- the four sending module：It is used to send the first channel state information.

As one embodiment, above-mentioned user equipment is characterized in that, first receiving module is also used for reception Three configuration informations.Wherein, the third configuration information is used for determining N number of candidate reference signals resource pool, first reference Signal resource pond is a candidate reference signals resource pool in N number of candidate reference signals resource pool.The N is greater than 1 Positive integer.

As one embodiment, above-mentioned user equipment is characterized in that, first receiving module is also used for reception One wireless signal, the 4th sending module also be used to send second channel status information.Wherein, K antenna port by with In sending first wireless signal, the second channel status information is used for determining the K1 in the K antenna port Antenna port.The first reference signal group is related with the K1 antenna port.The K and K1 is positive integer.

As one embodiment, above-mentioned user equipment is characterized in that, the third receiving module is also used for reception Two wireless signals.First channel state information be used to generate the second wireless singal.

As one embodiment, above-mentioned user equipment is characterized in that, further includes in first channel state information Two channel informations, the measurement based on the second reference signal group also be used to generate the second channel information.

As one embodiment, above-mentioned user equipment is characterized in that, first to report configuration be first channel information Report it is corresponding report configuration, second to report configuration be that first interference information reports and corresponding reports configuration.Described second Configuration information is also used for determining { described first reports configuration, and described second reports configuration }.

As one embodiment, above-mentioned user equipment is characterized in that, { first configuration information, second configuration Information } at least the latter transmitted on physical control channel.

The invention discloses a kind of base station equipments being used for multi-antenna transmission, wherein includes the following steps：

- the first sending module：It is used to send the first configuration information；

- the second sending module：It is used to send the second configuration information；

Third sending module：It is used to send the first reference signal group and the second reference signal group；

- the four receiving module：It is used to receive the first channel state information.

As one embodiment, above-mentioned base station equipment is characterized in that, first sending module is also used for transmission Three configuration informations.Wherein, the third configuration information is used for determining N number of candidate reference signals resource pool, first reference Signal resource pond is a candidate reference signals resource pool in N number of candidate reference signals resource pool.The N is greater than 1 Positive integer.

As one embodiment, above-mentioned base station equipment is characterized in that, first sending module is also used for transmission One wireless signal, the 4th receiving module also be used to receive second channel status information.Wherein, K antenna port by with In sending first wireless signal, the second channel status information is used for determining the K1 in the K antenna port Antenna port.The first reference signal group is related with the K1 antenna port.The K and K1 is positive integer.

As one embodiment, above-mentioned base station equipment is characterized in that, the third sending module is also used for transmission Two wireless signals.First channel state information be used to generate the second wireless singal.

As one embodiment, above-mentioned base station equipment is characterized in that, further includes in first channel state information Two channel informations, the measurement based on the second reference signal group also be used to generate the second channel information.

As one embodiment, above-mentioned base station equipment is characterized in that, first to report configuration be first channel information Report it is corresponding report configuration, second to report configuration be that first interference information reports and corresponding reports configuration.Described second Configuration information is also used for determining { described first reports configuration, and described second reports configuration }.

As one embodiment, above-mentioned base station equipment is characterized in that, { first configuration information, second configuration Information } at least the latter transmitted on physical control channel.

It is compared with traditional scheme as one embodiment, the present invention has following advantage：

The downlink signaling expense for supporting that dynamic disturbance measures is saved；

The reference signal expense for supporting interference measurement is saved；

It supports more flexible MU-MIMO scheduling, improves MU-MIMO capacity；

It supports more flexible coordinated multipoint transmission, improves the capacity of coordinated multipoint transmission.

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 RS that antenna port according to an embodiment of the invention is sent in a time/frequency source block The schematic diagram of (Reference Signal, reference signal)；

Fig. 3 shows the first reference signal group according to an embodiment of the invention, the second reference signal group, the first ginseng Examine the schematic diagram of signal resource subset and the first reference signal resource pond；

Fig. 4 shows that multiple UE according to an embodiment of the invention share the signal in the first reference signal resource pond Figure；

Fig. 5 shows the schematic diagram of MU-MIMO user scheduling according to an embodiment of the invention；

Fig. 6 shows the structure diagram according to an embodiment of the invention for the processing unit in user equipment；

Fig. 7 shows the structure diagram according to an embodiment of the invention for the processing unit in base station.

Embodiment 1

Embodiment 1 illustrates the flow chart of wireless transmission, as shown in Fig. 1.In attached drawing 1, base station N1 is the service of UE U2 Cell maintains base station.In attached drawing 1, box F1, the step in box F2 and box F3 is optional respectively.

For N1, third configuration information is sent in step s 11；The first wireless signal is sent in step s 12；In step Second channel status information is received in S13；The first configuration information is sent in step S14；The second configuration is sent in step S15 Information；The first reference signal group and the second reference signal group are sent in step s 16；In step S17, the first channel shape is received State information；Second wireless singal is sent in step S18.

For U2, third configuration information is received in the step s 21；The first wireless signal is received in step S22；In step Second channel status information is sent in S23；The first configuration information is received in step s 24；The second configuration is received in step s 25 Information；The first reference signal group and the second reference signal group are received in step S26；The first channel shape is sent in step s 27 State information；Second wireless singal is received in step S28.

In embodiment 1, the first reference signal resource pond is by the reference signal and first in the first reference signal group Reference signal composition in reference signal resource subset.Any one reference signal in the second reference signal group is described Reference signal in first reference signal resource subset.The first reference signal group, the second reference signal group and described First reference signal resource subset respectively includes positive integer reference signal.It is any one in first reference signal resource pond A reference signal will not exist simultaneously in the first reference signal group and in the first reference signal resource subset.It is described First configuration information is by U2 for determining first reference signal resource pond.Second configuration information is used for by U2 { from institute It states the first reference signal resource pond and determines the first reference signal group, institute is determined from the first reference signal resource subset State the second reference signal group }.Measurement based on the first reference signal group is by U2 for generating the first channel information.Based on institute The measurement for stating the second reference signal group is used to generate the first interference information by U2.First channel information and first interference Information is by U2 for generating first channel state information.First channel state information is by N1 for determining described first Channel information and first interference information.

As the sub- embodiment 1 of embodiment 1, the step in box F1 exists, and the third configuration information is by U2 for true Fixed N number of candidate reference signals resource pool, first reference signal resource pond is in N number of candidate reference signals resource pool One candidate reference signals resource pool.The N is greater than 1 positive integer.

As the sub- embodiment 2 of embodiment 1, the step in box F2 exists, and K antenna port is described for sending by N1 First wireless signal, the second channel status information are used to determine K1 antenna port in the K antenna port by N1. The first reference signal group is related with the K1 antenna port.The K and K1 is positive integer.

As the sub- embodiment 3 of embodiment 1, the step in box F3 exists, and first channel state information is used by N1 In the generation second wireless singal.

As the sub- embodiment 4 of embodiment 1, further includes second channel information in first channel state information, be based on The measurement of the second reference signal group is also by U2 for generating the second channel information.

As the sub- embodiment 5 of embodiment 1, first to report configuration be that corresponding report of the first reporting channel information is matched It sets, second to report configuration be that first interference information reports and corresponding reports configuration.Second configuration information is also used by U2 In determination { described first reports configuration, and described second reports configuration }.

As the sub- embodiment 6 of embodiment 1, in { first configuration information, second configuration information } at least after Person is transmitted on physical control channel.

In the case of not conflicting, above-mentioned sub- embodiment 1-6 can be combined arbitrarily.

Embodiment 2

Embodiment 2 illustrates the schematic diagram for the RS that antenna port according to the present invention is sent in a time/frequency source block, As shown in Fig. 2.In attached drawing 2, the box of bold box mark is a time/frequency source block, and the lattice of oblique line filling is first day The occupied RE of RS that line end mouth is sent in a time/frequency source block, the lattice for putting filling are the second antenna ports at one The occupied RE of RS sent in time/frequency source block.The first antenna port and second antenna port are two in the present invention A different antenna port.

As the sub- embodiment 1 of embodiment 2, the time/frequency source block includes 12 subcarriers in frequency domain.

As the sub- embodiment 2 of embodiment 2, the time/frequency source block includes 14 OFDM (Othogonal in time domain Frequency Division Multiplexing, orthogonal frequency division multiplexing) symbol.

As the sub- embodiment 3 of embodiment 2, the figure of RS that the first antenna port is sent in the time/frequency source block Patterns of the RS that case and second antenna port are sent in the time/frequency source block is identical.

As the sub- embodiment 4 of embodiment 2, the time/frequency source block is PRB (Physical Resource Block, object Manage resource block), patterns of the RS that the first antenna port is sent in the time/frequency source block is figures of the CSI-RS in PRB Case, patterns of the RS that second antenna port is sent in the time/frequency source block is patterns of the CSI-RS in PRB.

Embodiment 3

Embodiment 3 illustrates the first reference signal group according to an embodiment of the invention, the second reference signal group, and The schematic diagram of one reference signal resource subset and the first reference signal resource pond, as shown in Fig. 3.In attached drawing 3, oblique line filling Pane is the first reference signal group, and the pane for putting filling is the second reference signal group.

In embodiment 3, the first reference signal resource pond is referred to by the reference signal and first in the first reference signal group Reference signal composition in signal resource subset.Any one reference signal in second reference signal group is first reference Reference signal in signal resource subset.Any one reference signal in first reference signal resource pond will not be described First reference signal group neutralizes to be existed simultaneously in the first reference signal resource subset.

As the sub- embodiment 1 of embodiment 3, first user equipment is to receive the first configuration information and second to match confidence One user equipment of breath.First configuration information is by first user equipment for determining that first reference signal provides Source pond.Second configuration information is by first user equipment for { described in being determined from first reference signal resource pond First reference signal group determines the second reference signal group from the first reference signal resource subset }.

As the sub- embodiment 2 of embodiment 3, first configuration information and second configuration information are used by described first Family equipment is used for determining NZP CSI-RS and ZP CSI-RS.Reference signal in the first reference signal group is NZP CSI- RS, the reference signal in the second reference signal group is ZP CSI-RS.

As the sub- embodiment 3 of embodiment 3, the reference signal in the first reference signal group is not by first user Equipment is used for interference measurement, and the reference signal in the second reference signal group is surveyed by first user equipment for interfering Amount.

Embodiment 4

Embodiment 4 illustrates multiple UE according to an embodiment of the invention and shares showing for the first reference signal resource pond It is intended to, as shown in Fig. 4.In attached drawing 4, the lattice of oblique line filling is the reference signal in the first reference signal group, point filling Lattice be reference signal in the second reference signal group.

In example 4, it is shared by UE 0-3 by the first reference signal resource pond that RS 0-3 are formed.Base station is directed to UE 0-3 sends configuration information respectively.Also, the base station reports for the channel measurement and correlation of UE 0 and carries out wave beam tax to RS 0 Type, channel measurement and correlation for UE1 are reported carries out beam shaping to RS 1, is reported for the channel measurement and correlation of UE 2 Beam shaping is carried out to RS 2, channel measurement and correlation for UE3 are reported carries out beam shaping to RS 3,.The channel is surveyed Amount and related report are that a user equipment assumes that the channel is used for data transmission thus the measurement carried out to the channel With report.It is defined as the first reference letter of the user equipment by the reference signal that a user equipment is only used for channel measurement Reference signal in number group.It is defined as the of the user equipment for the reference signal of interference measurement by a user equipment Reference signal in two reference signal groups.UE 0-3 have different references to the RS 0-3 in first reference signal resource pond Signal group divides.As shown in Fig. 4, in RS 0-3, RS 0 is the reference signal in the first reference signal group of UE 0, simultaneously It is the reference signal in the respective second reference signal groups of UE 1-3；RS 1 is the reference letter in the first reference signal group of UE 1 Number, while being UE 0, the reference signal in 2,3 respective second reference signal groups；RS 2 is the first reference signal group of UE 2 In reference signal, while being UE 0, the reference signal in 1,3 respective second reference signal group；RS 3 is the first of UE 3 Reference signal in reference signal group, while being UE 0, the reference signal in 1,2 respective second reference signal group.

As the sub- embodiment 1 of embodiment 4, RS 0-3 are CSI-RS.Identical power is by the base station for sending RS 0-3, but for UE 0-3, the reference signal in respective first reference signal group is used as NZP CSI-RS, respectively From the second reference signal group in reference signal used as ZP CSI-RS.

Embodiment 5

Embodiment 5 illustrates the schematic diagram of MU-MIMO user scheduling according to an embodiment of the invention, such as attached drawing 5 It is shown.BS 0 is the serving BS of UE 0 and UE 1.

In embodiment 5, in the first stage of MU-MIMO scheduling, BS 0 sends the first wireless signal.Described first is wireless Signal is the signal that the specific thick beam scanning of cell is carried out to cell coverage area.BS 0 passes through UE in the first stage 0 and UE 1 feedback obtains the thick beam information of UE 0 and UE 1.

In embodiment 5, in the second stage of MU-MIMO scheduling, BS 0 is according to first stage UE 0 and UE 1 to thick wave The feedback result of beam scanning uses in the first reference signal resource pond different reference signal respectively to UE 0 and UE 1 into traveling Fine beam scanning, channel information and the interference information of one step obtain.It is used for the reference of the fine beam scanning for UE 0 Signal is measured and is fed back for interference channel by UE 1, is used for the reference signal for the fine beam scanning of UE 1 by UE 0 It measures and feeds back for interference channel.

In embodiment 5, in the phase III of MU-MIMO scheduling, BS 0 is fed back according to UE 0 and UE 1 in second stage Channel information and interference information determine the phase III to used respectively for UE 0 and 1 data of UE beam shaping matrix, Pre-coding matrix and MCS carry out the data transmission of MU-MIMO.

Embodiment 6

Embodiment 6 illustrates the structural frames according to an embodiment of the invention for the processing unit in user equipment Figure, as shown in Fig. 6.In figure 6, user apparatus 200 is mainly by the first receiving module 201, the second receiving module 202, and Three receiving modules 203 and the 4th sending module 204 composition.

In embodiment 6, the first receiving module 201 be used to receive the first configuration information；Second receiving module 202 by with In receiving the second configuration information；Third receiving module 203 be used to receive the first reference signal group and the second reference signal group；The Four sending modules 204 be used to send the first channel state information.

In embodiment 6, the first reference signal resource pond is by the reference signal and first in the first reference signal group Reference signal composition in reference signal resource subset.Any one reference signal in the second reference signal group is described Reference signal in first reference signal resource subset.The first reference signal group, the second reference signal group and described First reference signal resource subset respectively includes positive integer reference signal.It is any one in first reference signal resource pond A reference signal will not exist simultaneously in the first reference signal group and in the first reference signal resource subset.It is described First configuration information is used for determining first reference signal resource pond.Second configuration information is used for { from described One reference signal resource pond determines the first reference signal group, and described the is determined from the first reference signal resource subset Two reference signal groups }.Measurement based on the first reference signal group be used to generate the first channel information.Based on described second The measurement of reference signal group be used to generate the first interference information.First channel information and the first interference information be used to give birth to At first channel state information.

As the sub- embodiment 1 of embodiment 6, first receiving module 201 also be used to receive third configuration information.Its In, the third configuration information is used for determining that N number of candidate reference signals resource pool, first reference signal resource pond are institutes State a candidate reference signals resource pool in N number of candidate reference signals resource pool.The N is greater than 1 positive integer.

As the sub- embodiment 2 of embodiment 6, first receiving module 201 also be used to receive the first wireless signal, institute The 4th sending module 204 is stated also to be used to send second channel status information.Wherein, K antenna port is used for described in transmission First wireless signal, the second channel status information are used for determining K1 antenna port in the K antenna port.Institute It is related with the K1 antenna port to state the first reference signal group.The K and K1 is positive integer.

As the sub- embodiment 3 of embodiment 6, the third receiving module 203 also be used to receive second wireless singal.Institute It states the first channel state information and be used to generate the second wireless singal.

As the sub- embodiment 4 of embodiment 6, further includes second channel information in first channel state information, be based on The measurement of the second reference signal group also be used to generate the second channel information.

As the sub- embodiment 5 of embodiment 6, first to report configuration be that corresponding report of the first reporting channel information is matched It sets, second to report configuration be that first interference information reports and corresponding reports configuration.Second configuration information is also used for It determines { described first reports configuration, and described second reports configuration }.

As the sub- embodiment 6 of embodiment 6, in { first configuration information, second configuration information } at least after Person is transmitted on physical control channel.

Embodiment 7

Embodiment 7 shows the structure diagram according to an embodiment of the invention for the processing unit in base station, As shown in Fig. 7.In fig. 7, base station apparatus 300 is mainly by the first receiving module 301, and the second receiving module 302, third connects Receive module 303 and the 4th sending module 304 composition.

In embodiment 7, the first sending module 301 be used to send the first configuration information；Second sending module 302 by with In sending the second configuration information；Third sending module 303 be used to send the first reference signal group and the second reference signal group；The Four receiving modules 304 be used to receive the first channel state information.

In embodiment 7, the first reference signal resource pond is by the reference signal and first in the first reference signal group Reference signal composition in reference signal resource subset.Any one reference signal in the second reference signal group is described Reference signal in first reference signal resource subset.The first reference signal group, the second reference signal group and described First reference signal resource subset respectively includes positive integer reference signal.It is any one in first reference signal resource pond A reference signal will not exist simultaneously in the first reference signal group and in the first reference signal resource subset.It is described First configuration information is used for determining first reference signal resource pond.Second configuration information is used for { from described One reference signal resource pond determines the first reference signal group, and described the is determined from the first reference signal resource subset Two reference signal groups }.Measurement based on the first reference signal group be used to generate the first channel information.Based on described second The measurement of reference signal group be used to generate the first interference information.First channel information and the first interference information be used to give birth to At first channel state information.

As the sub- embodiment 1 of embodiment 7, first sending module 301 also be used to send third configuration information.Its In, the third configuration information is used for determining that N number of candidate reference signals resource pool, first reference signal resource pond are institutes State a candidate reference signals resource pool in N number of candidate reference signals resource pool.The N is greater than 1 positive integer.

As the sub- embodiment 2 of embodiment 7, first sending module 301 also be used to send the first wireless signal, institute The 4th receiving module 304 is stated also to be used to receive second channel status information.Wherein, K antenna port is used for described in transmission First wireless signal, the second channel status information are used for determining K1 antenna port in the K antenna port.Institute It is related with the K1 antenna port to state the first reference signal group.The K and K1 is positive integer.

As the sub- embodiment 3 of embodiment 7, the third sending module 303 also be used to send second wireless singal.Institute It states the first channel state information and be used to generate the second wireless singal.

As the sub- embodiment 4 of embodiment 7, further includes second channel information in first channel state information, be based on The measurement of the second reference signal group also be used to generate the second channel information.

As the sub- embodiment 5 of embodiment 7, first to report configuration be that corresponding report of the first reporting channel information is matched It sets, second to report configuration be that first interference information reports and corresponding reports configuration.Second configuration information is also used for It determines { described first reports configuration, and described second reports configuration }.

As the sub- embodiment 6 of embodiment 7, in { first configuration information, second configuration information } at least after Person is transmitted on physical control channel.

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.User equipment in the present invention or terminal packet Include but be not limited to mobile phone, tablet computer, notebook, card of surfing Internet, NB-IOT terminals, the wireless telecom equipments such as eMTC terminals.This hair Base station or system equipment in bright include but not limited to macrocell base stations, microcell base station, Home eNodeB, the nothings such as relay base station Line communication 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

1. a kind of method being used in the user equipment of multi-antenna transmission, wherein include the following steps：

Step A. receives the first configuration information；

Step B. receives the second configuration information；

Step D. sends the first channel state information.

Wherein, the first reference signal resource pond is by the reference signal and the first reference signal resource in the first reference signal group Reference signal composition in subset.Any one reference signal in the second reference signal group is first reference signal Reference signal in subset of resources.The first reference signal group, the second reference signal group and first reference signal Subset of resources respectively includes positive integer reference signal.Any one reference signal in first reference signal resource pond is not It can exist simultaneously in the first reference signal group and in the first reference signal resource subset.First configuration information It is used for determining first reference signal resource pond.Second configuration information be used to { provide from first reference signal Source pond determines the first reference signal group, and second reference signal is determined from the first reference signal resource subset Group }.Measurement based on the first reference signal group be used to generate the first channel information.Based on the second reference signal group Measurement be used for generate the first interference information.First channel information and the first interference information be used to generate described first Channel state information.

2. according to the method described in claim 1, it is characterized in that, the step A further includes following steps：

Step A0. receives third configuration information；

Wherein, the third configuration information is used for determining N number of candidate reference signals resource pool, first reference signal resource Pond is a candidate reference signals resource pool in N number of candidate reference signals resource pool.The N is greater than 1 positive integer.

3. according to the method described in claim 1-2, which is characterized in that the step A further includes following steps：

Step A1. receives the first wireless signal；

Step A2. sends second channel status information.

Wherein, K antenna port be used to send first wireless signal, and the second channel status information is used for determining K1 antenna port in the K antenna port.The first reference signal group is related with the K1 antenna port.It is described The K and K1 is positive integer.

4. according to the method described in claim 1-3, which is characterized in that further include following steps：

Step E. receives second wireless singal.

5. according to the method described in claim 1-4, which is characterized in that further include the second letter in first channel state information Road information, the measurement based on the second reference signal group also be used to generate the second channel information.

6. according to the method described in claim 1-5, which is characterized in that first to report configuration be first reporting channel information Corresponding to report configuration, second to report configuration be that first interference information reports and corresponding reports configuration.Second configuration Information is also used for determining { described first reports configuration, and described second reports configuration }.

7. according to the method described in claim 1-6, which is characterized in that { first configuration information, described second matches confidence Breath } at least the latter transmitted on physical control channel.

8. a kind of method being used in the base station equipment of multi-antenna transmission, wherein include the following steps：

Step A. sends the first configuration information；

Step B. sends the second configuration information；

Step D. receives the first channel state information.

9. according to the method described in claim 8, it is characterized in that, the step A further includes following steps：

Step A0. sends third configuration information；

10. according to claim 8, the method described in 9, which is characterized in that the step A further includes following steps：

Step A1. sends the first wireless signal；

Step A2. receives second channel status information.

11. according to the method described in claim 8-10, which is characterized in that further include following steps：

Step E. sends second wireless singal.

12. according to the method described in claim 8-11, which is characterized in that further include second in first channel state information Channel information, the measurement based on the second reference signal group also be used to generate the second channel information.

13. according to the method described in claim 8-12, which is characterized in that first to report configuration be on first channel information Report it is corresponding report configuration, second to report configuration be that first interference information reports and corresponding reports configuration.Described second matches Confidence breath is also used for determining { described first reports configuration, and described second reports configuration }.

14. according to the method described in claim 8-13, which is characterized in that { first configuration information, described second matches confidence Breath } at least the latter transmitted on physical control channel.

15. a kind of user equipment being used for multi-antenna transmission, wherein including following module：

16. a kind of base station equipment being used for multi-antenna transmission, wherein include the following steps：