CN109792357A - Channel state measurement method, sending method, mobile station and base station - Google Patents

Channel state measurement method, sending method, mobile station and base station Download PDF

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Publication number
CN109792357A
CN109792357A CN201780060583.9A CN201780060583A CN109792357A CN 109792357 A CN109792357 A CN 109792357A CN 201780060583 A CN201780060583 A CN 201780060583A CN 109792357 A CN109792357 A CN 109792357A
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csi
group
channel state
resource
measurement
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CN201780060583.9A
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CN109792357B (en
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那崇宁
蒋惠玲
柿岛佑一
永田聪
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NTT Docomo Inc
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NTT Docomo Inc
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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
    • H04B7/06—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
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • 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
    • 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
    • H04B7/0408—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas using two or more beams, i.e. beam diversity
    • 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
    • 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
    • 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
    • H04B7/0621—Feedback content
    • H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]
    • 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

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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)

Abstract

The embodiment of the invention provides a kind of channel state measurement method, channel state information reference signals (CSI-RS) sending method, mobile station and base stations.Channel state measurement method according to an embodiment of the present invention can be executed by mobile station, it include: the first resource configuration information for obtaining the first CSI-RS collection, wherein the first CSI-RS collection includes multiple CSI-RS groups, it include K CSI-RS in each CSI-RS group, K is to include CSI-RS group resource allocation information corresponding with each CSI-RS group respectively greater than 1 positive integer and the first resource configuration information；The Secondary resource configuration information of the 2nd CSI-RS collection is obtained, wherein the second CSI-RS collection includes 1 CSI-RS；And channel state measurement is carried out using Secondary resource indicated by first resource indicated by the first resource configuration information and Secondary resource configuration information.

Description

Channel state measurement method, sending method, mobile station and base station Technical field
The present invention relates to a kind of channel state measurement method, channel state information reference signals (CSI-RS) sending method, mobile station and base stations.More particularly it relates to a kind of channel state measurement method, channel state information reference signals (CSI-RS) sending method, mobile station and base station that can be used in a wireless communication system.
Background technique
LTE system follow-on system (such as, otherwise referred to as LTE-Advanced LTE-Advanced Pro), it proposes full dimension multiple-input and multiple-output (Full Dimensional MIMO, FD-MIMO) and extensive multiple-input and multiple-output (Massive MIMO) antenna is the Radio Transmission Technology in the LTE (long term evolution) of 3GPP (third generation partner program) research.Compared with traditional mimo system, in FD-MIMO and Massive mimo system, when the data of mobile station increase, base station is able to use more antennas and carries out data transmission, to improve throughput of system.
In FD-MIMO and Massive mimo system, can according to the channel status of mobile station to mobile station distribution wave beam appropriate to carry out signal transmission.Specifically, base station can periodically send the channel status reference signal (CSI-RS) for multiple candidate beams to mobile station, so that mobile station measures each wave beam, and wave beam for mobile station carry out subsequent transmission is selected the feedback of CSI-RS according to mobile station from multiple candidate beams.However, the signaling overheads for wave beam measurement is consequently increased with the increase of antenna amount.On the other hand, the wave beam measurement carried out required for mobile station and computation complexity significantly improve.This mobile station for causing performance poor not can be carried out effective wave beam measurement and feedback.Therefore current method is not suitable for FD-MIMO and Massive mimo system.
Summary of the invention
According to an aspect of the present invention, provide a kind of channel state measurement method executed by mobile station, it include: the first resource configuration information for obtaining the first channel state information reference signals (CSI-RS) collection, wherein the first CSI-RS collection includes multiple CSI-RS groups, it include K CSI-RS in each CSI-RS group, K is to include CSI-RS group resource allocation information corresponding with each CSI-RS group respectively greater than 1 positive integer and first resource configuration information；The Secondary resource configuration information of the 2nd CSI-RS collection is obtained, wherein the 2nd CSI-RS collection includes 1 CSI-RS；And use indicated by first resource configuration information the Secondary resource indicated by one resource and Secondary resource configuration information carries out channel state measurement.
According to another aspect of the present invention, provide a kind of channel state information reference signals (CSI-RS) sending method executed by base station, it include: in the first stage of a measuring section, the CSI-RS that the first CSI-RS is concentrated is sent to mobile station using first resource, wherein the first CSI-RS collection includes multiple CSI-RS groups, it include K CSI-RS in each CSI-RS group, K is the positive integer greater than 1, first resource includes CSI-RS group resource corresponding with each CSI-RS group respectively, in the first phase, as unit of CSI-RS group, the CSI-RS in the CSI-RS group is sent using CSI-RS group resource corresponding with each CSI-RS group；It receives from the mobile channel state measurement feedback sent；According to the received channel state measurement feedback of institute, is concentrated in the first CSI-RS and determine candidate CSI-RS；And in the second stage of measuring section, candidate CSI-RS is sent to mobile station using Secondary resource indicated by Secondary resource configuration information.
According to another aspect of the present invention, provide a kind of mobile station, it include: information acquisition unit, it is configured to obtain the first resource configuration information of the first channel state information reference signals (CSI-RS) collection, wherein the first CSI-RS collection includes multiple CSI-RS groups, it include K CSI-RS in each CSI-RS group, K is the positive integer greater than 1, the first resource configuration information includes CSI-RS group resource allocation information corresponding with each CSI-RS group respectively, and also obtain the Secondary resource configuration information of the 2nd CSI-RS collection, wherein the second CSI-RS collection includes 1 CSI-RS；And measuring unit, it is configured so that Secondary resource indicated by first resource indicated by the first resource configuration information and Secondary resource configuration information carries out channel state measurement.In addition, according to another aspect of the present invention, mobile station may also include transmission unit, with to base station feedback channel state measurement result.
According to another aspect of the present invention, provide a kind of base station, it include: transmission unit, it is configured in the first stage of a measuring section, the CSI-RS that the first CSI-RS is concentrated is sent to mobile station using first resource, wherein the first CSI-RS collection includes multiple CSI-RS groups, it include K CSI-RS in each CSI-RS group, K is the positive integer greater than 1, the first resource includes CSI-RS group resource corresponding with each CSI-RS group respectively, the transmission unit is in the first phase, as unit of CSI-RS group, the CSI-RS in the CSI-RS group is sent using CSI-RS group resource corresponding with each CSI-RS group；Receiving unit is configured to receive the channel state measurement feedback sent from mobile station；And determination unit, it is configured to concentrate in the first CSI-RS according to the received channel state measurement feedback of institute and determine candidate CSI-RS；And the transmission unit is additionally configured in the second stage of the measuring section, sends the candidate CSI-RS to mobile station using Secondary resource indicated by Secondary resource configuration information.Above-mentioned aspect according to the present invention channel state measurement method, CSI-RS sending method, mobile station with And in base station, it is grouped by the wave beam detected to needs, distributes each CSI-RS group different resources, to reduce channel state measurement and computation complexity, and reduce the requirement for mobile station performance.
Detailed description of the invention
Fig. 1 is to show according to an embodiment of the present invention, by the flow chart for the channel state measurement method that mobile station executes.
Fig. 2 is the schematic diagram of the first CSI-RS collection according to an embodiment of the invention.
Fig. 3 is to show an example according to the present invention, carries out the schematic diagram of channel state measurement in the first phase.
Fig. 4 is to show another example according to the present invention, carries out the schematic diagram of channel state measurement in the first phase.
Fig. 5 is to show according to one embodiment of present invention, by the flow chart for the CSI-RS sending method that base station executes.
Fig. 6 is to show according to one embodiment of present invention, the exemplary block diagram of mobile station.
Fig. 7 is to show another embodiment according to the present invention, the exemplary block diagram of mobile station.
Fig. 8 is to show according to an embodiment of the present invention, the exemplary block diagram of base station.
Specific embodiment
Channel state measurement method, channel state information reference signals (CSI-RS) sending method, mobile station and base station according to an embodiment of the present invention described below with reference to accompanying drawings.In the accompanying drawings, identical reference label indicates identical element from beginning to end.It is understood that the embodiments described herein is merely illustrative, and it is not necessarily to be construed as limiting the scope of the invention.In addition, UE described here may include various types of user terminals, such as mobile terminal (or being mobile station), however, for convenience, UE and mobile station is hereinafter sometimes interchangeably used.
Embodiment according to the present invention can be used for the communication system for example, by using MIMO technologies such as FD-MIMO, Massive MIMO.In the communication system using MIMO technology, base station can send non-precoded CSI-RS to UE, so that UE carries out channel measurement.Alternatively, base station can also send the CSI-RS for passing through wave beam forming to UE, and UE can carry out channel measurement to corresponding wave beam according to the CSI-RS of wave beam forming.Preferably, in embodiment according to the present invention CSI-RS be by wave beam forming CSI-RS.
Hereinafter, describing the channel state measurement method executed by mobile station referring to Fig.1.Fig. 1 is shown according to an embodiment of the present invention, the flow chart of the channel state measurement method 100 applied to mobile station.As shown in Figure 1, in step s101, the first resource configuration information of the first CSI-RS collection is obtained, wherein the first CSI-RS collection includes multiple CSI-RS groups, it include K CSI-RS in each CSI-RS group, K is the positive integer greater than 1.First resource configuration information may include CSI-RS group resource allocation information corresponding with each CSI-RS group respectively.For example, resource distribution corresponding to each CSI-RS group can be different.In another example the CSI-RS group resource allocation information of each CSI-RS group can indicate the occupied resource of each CSI-RS of the CSI-RS group.
As described above, CSI-RS can be the CSI-RS by wave beam forming in embodiment according to the present invention.Specifically, each CSI-RS can correspond to a wave beam.The CSI-RS that first CSI-RS collection includes, which can correspond to base station, some or all of can generate wave beam.That is, in an embodiment according to the present invention, multiple CSI-RS for measuring the channel status that base station some or all of can generate wave beam are grouped.
Fig. 2 is the schematic diagram of the first CSI-RS collection according to an embodiment of the invention.As shown in Fig. 2, 4 CSI-RS group 210-240 for including in the first CSI-RS collection 200, and include 2 CSI-RS in each CSI-RS group.According to step S101, the first resource configuration information including CSI-RS group resource allocation information corresponding with CSI-RS group 210-240 respectively can get.
In addition, may include mutiple antennas port in a wave beam.In other words, 1 CSI-RS in CSI-RS group includes M antenna port, and wherein M is positive integer.Hereinafter, one or more antenna ports corresponding to a CSI-RS are known as a CSI-RS resource.
An example according to the present invention, each antenna port can be generated by further wave beam forming, so that the different ports CSI-RS in a CSI-RS resource represent different beams.Another example according to the present invention, each antenna port can be by generating, so that the different ports CSI-RS in a CSI-RS resource represent antenna port non-precoded in the wave beam corresponding to the CSI-RS resource without further wave beam forming.In the illustrated example shown in fig. 2, lattice indicates antenna port in each CSI-RS.As shown in Fig. 2, in this example, the CSI-RS resource that the first CSI-RS is concentrated can be formed by 4 antenna ports.
An example according to the present invention, first resource configuration information further include with reference to sub-frame information.Specifically, the reference resources configuration of the first CSI-RS collection is indicated with reference to sub-frame information.For example, can indicate to refer to subframe for the one of entire first CSI-RS collection with reference to sub-frame information.In the case, CSI-RS group resource allocation information corresponding with each CSI-RS group can indicate the CSI-RS group it is corresponding, relative to the ginseng Examine the offset of resource distribution.For example, can indicate that the CSI-RS group corresponds to the offset of the reference subframe of the first CSI-RS collection for the CSI-RS group resource distribution of a CSI-RS group.
An example according to the present invention, CSI-RS group resource allocation information corresponding with each CSI-RS group are mutually indepedent.In other words, the subframe where the CSI-RS in the CSI-RS group can be indicated for the CSI-RS group resource distribution of each CSI-RS group.For example, being only the subframe where the CSI-RS that can determine in the CSI-RS group by the CSI-RS group resource distribution of each CSI-RS group, in the case, first resource configuration information does not need to include the reference sub-frame information for the first CSI-RS collection.
In step s 102, the Secondary resource configuration information of the 2nd CSI-RS collection is obtained, wherein the 2nd CSI-RS collection includes 1 CSI-RS.The CSI-RS that 2nd CSI-RS is concentrated is also possible to the CSI-RS by wave beam forming.Wave beam corresponding to the CSI-RS that 2nd CSI-RS is concentrated can be identical as wave beam corresponding to the CSI-RS that the first CSI-RS is concentrated.Alternatively, wave beam corresponding to the CSI-RS that the 2nd CSI-RS is concentrated can be different from wave beam corresponding to the CSI-RS that the first CSI-RS is concentrated.
Furthermore, the CSI-RS that 2nd CSI-RS is concentrated may include N number of antenna port, wherein N is positive integer, and the quantity N for forming the antenna port for the CSI-RS that the 2nd CSI-RS is concentrated can be identical or different with the quantity M for the antenna port for forming the CSI-RS that the first CSI-RS is concentrated.
Then, in step s 103, channel state measurement is carried out using Secondary resource indicated by first resource indicated by first resource configuration information and Secondary resource configuration information.An example according to the present invention, channel state measurement can be divided into two stages.For example, in the first stage for wherein carrying out rough beam selection, and in the second stage for wherein carrying out channel state measurement for particular beam.
Firstly, the channel state measurement in the description first stage.An example according to the present invention the first resource and the Secondary resource can be used to carry out channel state measurement in the first stage of a measuring section.For example, in the first phase, as unit of CSI-RS group, using CSI-RS group resource indicated by CSI-RS group resource allocation information corresponding with each CSI-RS group to carry out channel state measurement respectively, and obtain the first measurement result.In addition, carrying out channel state measurement using Secondary resource, and obtain the second measurement result after carrying out channel state measurement using the corresponding CSI-RS group resource of a CSI-RS group every time.
Preferably, channel state measurement is being carried out to a CSI-RS group, and after the first measurement result of acquisition, it can be according to the first measurement result of each CSI-RS group, it determines the candidate CSI-RS in the CSI-RS group, and sends the first measurement feedback about the candidate CSI-RS to base station.An example according to the present invention, the first measurement feedback can be the part CSI feedback for a CSI-RS group.Example Such as, the first measurement feedback can wrap the CSI-RS resource instruction (CSI-RS Resource Indicator, CRI) of the instruction occupied resource of candidate CSI-RS.CRI can indicate serial number of the candidate CSI-RS in the CSI-RS group where the candidate CSI-RS.Alternatively, CRI can indicate the serial number that candidate CSI-RS is concentrated in entire first CSI-RS.
Furthermore, an example according to the present invention, the first measurement feedback may also include according to the measurement order instruction obtained (Rank Indicator, RI) for corresponding CSI-RS group, initial pre-coding matrix instruction (Precoder Matrix Indicator, PMI).In addition, in order to make base station obtain the more information about candidate CSI-RS, the first measurement feedback may also include channel quality instruction (Channel Quality Indicator, CQI).
Then, base station can send the CSI-RS for particular beam according to the first measurement feedback using Secondary resource.For example, the particular beam can be the indicated candidate beam of the first measurement feedback.In another example the particular beam can be according to the first measurement feedback, rear wave beam obtained is adjusted based on candidate beam.As described above, Secondary resource can be used to carry out channel state measurement, and obtain the second measurement result after carrying out channel state measurement using the corresponding CSI-RS group resource of a CSI-RS group every time.
Mobile station can also send the second measurement feedback about second measurement result to base station.An a example according to the present invention can carry out the second measurement feedback after carrying out channel state measurement using the Secondary resource for the candidate CSI-RS in a CSI-RS group every time.Second measurement feedback may include the complete CSI feedback about the particular beam.For example, the second measurement feedback may include RI, PMI, CQI that basis obtains the measurement of the CSI-RS of the particular beam.Alternatively, mobile station can also be to after completing for the measurement of all CSI-RS groups, according to the second measurement result of each CSI-RS group, selection needs the CSI-RS used in subsequent second stage, and the second measurement feedback can only include the measurement result about selected CSI-RS.
In this example, each CSI-RS group can be measured twice, that is, the measurement for all CSI-RS in the CSI-RS group and the measurement for specific one CSI-RS in the CSI-RS group.And feedback measurement can be distinguished.Due to carrying out more targeted measurement also for the CSI-RS group after the measurement of all CSI-RS in for a CSI-RS group, it may include rough measurement result in the first measurement feedback.
Fig. 3 is to show an example according to the present invention, carries out the schematic diagram of channel state measurement in the first phase.In the example depicted in fig. 3, it is described so that the first CSI-RS collection is the first CSI-RS collection 200 shown in Fig. 2 as an example.Assuming that CSI-RS group resource distribution corresponding with CSI-RS group 210-240 Information indicates respectively subframe SF1, SF3, SF5 and SF7.
As shown in figure 3, in the first phase, being measured in subframe SF1 to CSI-RS group 210.According to the first measurement result for CSI-RS group 210, in the case that second CSI-RS channel status is best in CSI-RS group 210, second CSI-RS is determined as the candidate CSI-RS in CSI-RS group 210, and sends the first measurement feedback about the candidate CSI-RS to base station.For example, the first measurement feedback may include the CRI that value is 2.Then, Secondary resource can be used to send second CSI-RS in CSI-RS group 210 for base station.Correspondingly, Secondary resource can be used to carry out channel state measurement for mobile station, and obtain the second measurement result.
Then, CSI-RS group 220 is measured in subframe SF3.According to the first measurement result for CSI-RS group 220, in the case that first CSI-RS channel status is best in CSI-RS group 220, first CSI-RS is determined as the candidate CSI-RS in CSI-RS group 220, and sends the first measurement feedback about the candidate CSI-RS to base station.For example, the first measurement feedback may include the CRI that value is 1.Then, Secondary resource can be used to send first CSI-RS in CSI-RS group 220 for base station.Correspondingly, Secondary resource can be used to carry out channel state measurement for mobile station, and obtain the second measurement result.
In addition, mobile station can carry out the operation similar with CSI-RS group 210 and CSI-RS group 220 to CSI-RS group 230 and CSI-RS group 240 respectively in subframe SF5 and subframe SF7, details are not described herein.
In the example depicted in fig. 3, mobile station can send the second measurement feedback of the second measurement result about the CSI-RS group to base station after obtaining for the second measurement result of each CSI-RS group.Alternatively, mobile station can be after obtaining for the second measurement result of the first CIS-RS all CSI-RS groups concentrated, according to the second measurement result of each CSI-RS group, selection needs the CSI-RS used in subsequent second stage, and sends the measurement result about selected CSI-RS to base station.
In addition, another example according to the present invention can be used only the first resource and carry out channel state measurement in the first stage of a measuring section.For example, in the first phase, as unit of CSI-RS group, using CSI-RS group resource indicated by CSI-RS group resource allocation information corresponding with each CSI-RS group to carry out channel state measurement respectively, and obtain third measurement result.
Preferably, mobile station can carry out channel state measurement to a CSI-RS group, and after obtaining third measurement result, can be according to the third measurement result of each CSI-RS group, it determines the candidate CSI-RS in the CSI-RS group, and is sent to base station and measure feedback about the third of the candidate CSI-RS.Alternatively, mobile station can also be to after completing for the measurement of all CSI-RS groups, and according to the third measurement result of each CSI-RS group, selection needs the candidate CSI-RS used in subsequent second stage, and The 4th measurement feedback about candidate CSI-RS is sent to base station.
In this example, one-shot measurement only carried out for each CSI-RS group, and can feedback measurement, therefore the measurement result fed back should include complete CSI feedback.
Fig. 4 is to show another example according to the present invention, carries out the schematic diagram of channel state measurement in the first phase.In the example depicted in fig. 4, it is described so that the first CSI-RS collection is the first CSI-RS collection 200 shown in Fig. 2 as an example.Assuming that CSI-RS group resource allocation information corresponding with CSI-RS group 210-240 indicates respectively subframe SF1, SF3, SF5 and SF7.
As shown in figure 4, in the first phase, being measured in subframe SF1 to CSI-RS group 210, CSI-RS group 220 is measured in subframe SF3, CSI-RS group 230 is measured in subframe SF5, CSI-RS group 240 is measured in subframe SF7.In the example depicted in fig. 4, mobile station can determine the candidate CSI-RS in each CSI-RS group according to the third measurement result of CSI-RS group 210, CSI-RS group 220, CSI-RS group 230 and CSI-RS group 240 respectively, and send to base station measure feedback about the third of the candidate CSI-RS in each CSI-RS group respectively.
Ground can be changed, mobile station can also be according to the third measurement result of CSI-RS group 210, CSI-RS group 220, CSI-RS group 230 and CSI-RS group 240, candidate CSI-RS is selected from multiple CSI-RS groups, and sends the 4th measurement feedback about the candidate CSI-RS to base station.
Next, the channel state measurement in description second stage.In the second stage of measuring section, channel state measurement is carried out using Secondary resource.As described above, Secondary resource is the occupied resource of CSI-RS that the 2nd CSI-RS is concentrated, and it includes 1 CSI-RS that the 2nd CSI-RS, which is concentrated,.Base station can be fed back according to the measurement of mobile station in the first stage, determine that the 2nd CSI-RS concentrates the CSI-RS for including.
In addition, although base station can be fed back according to the measurement of mobile station in the first stage determines that the 2nd CSI-RS concentrates the CSI-RS for including, the 2nd CSI-RS that the CSI-RS for including is concentrated the CSI-RS for including can also to be concentrated different from the first CSI-RS.Therefore, the first resource for the first CSI-RS collection and the Secondary resource for the 2nd CSI-RS collection can be independently configured.As described above, in the first phase, the measurement result that mobile station can only carry out one-shot measurement, and be fed back for each CSI-RS group includes complete CSI feedback.In the case, when Secondary resource indicated by first resource indicated by the first resource configuration information described in the first stage and Secondary resource configuration information is located in same subframe, channel state measurement is carried out using first resource indicated by first resource configuration information, without considering Secondary resource indicated by Secondary resource configuration information.
In the channel state measurement method according to the present embodiment, divide by the CSI-RS that the first CSI-RS that will need to detect is concentrated for multiple groupings, and the resource different to the distribution of each CSI-RS group, thus Channel state measurement and computation complexity are reduced, the requirement for mobile station performance is reduced.The signaling overheads of wave beam measurement is used in synchronization in addition, reducing.
Next, describing the CSI-RS sending method 500 according to an embodiment of the present invention executed by base station referring to Fig. 5.Fig. 5 is to show according to one embodiment of present invention, by the flow chart for the CSI-RS sending method 500 that base station executes.CSI-RS sending method 500 shown in fig. 5 is corresponding with the channel state measurement method 100 for combining Fig. 1-4 to describe, and therefore, only the main contents of CSI-RS sending method 500 are described here, and omissions of detail.
As shown in Figure 5, in step S501, in the first stage of a measuring section, the CSI-RS that the first CSI-RS is concentrated is sent to mobile station using first resource, wherein the first CSI-RS collection includes multiple CSI-RS groups, it include K CSI-RS in each CSI-RS group, K is the positive integer greater than 1, and first resource includes CSI-RS group resource corresponding with each CSI-RS group respectively.
In step S502, receive from the mobile channel state measurement feedback sent.Then it in step S503, is fed back according to the received channel state measurement of institute, is concentrated in the first CSI-RS and determine candidate CSI-RS.An example according to the present invention, channel state measurement feedback may include that mobile station feeds back the CSI-RS group channel state measurement of each CSI-RS group.In step S503, the CSI-RS group channel state measurement of multiple CSI-RS groups can be concentrated to feed back according to the first CSI-RS, be concentrated in the first CSI-RS and determine candidate CSI-RS.
Such as, it is such as above described in conjunction with Figure 3, in the first phase, each CSI-RS group can be measured twice, i.e., measurement for all CSI-RS in the CSI-RS group and the measurement for specific one CSI-RS in the CSI-RS group, and channel state measurement feedback may include the first measurement feedback and the second measurement feedback.
Specifically, base station can receive mobile station and feed back to the first measurement of the CSI-RS group.Method 500 shown in fig. 5 may also include in the first stage, is fed back according to the first of each CSI-RS group the measurement, determines the CSI-RS to be measured in the CSI-RS group.Then, according to the CSI-RS to be measured in the CSI-RS group, CSI-RS to be measured is sent to mobile station using Secondary resource indicated by Secondary resource configuration information.Furthermore in the first phase, base station also can receive mobile station and feed back to the second measurement of CSI-RS to be measured.In step S503, it can be fed back according to the second measurement, be concentrated in the first CSI-RS and determine candidate CSI-RS.
For example, the second measurement feedback can indicate the best CSI-RS of the channel status in each CSI-RS group.In the case, in step S503, it can be fed back according to the second of each CSI-RS group the measurement, in the best CSI-RS of the channel status of each CSI-RS group, determine candidate CSI-RS.Again Such as, mobile station can be after obtaining for the second measurement result of the first CIS-RS all CSI-RS groups concentrated, according to the second measurement result of each CSI-RS group, selection needs the CSI-RS used in subsequent second stage, and sends the measurement result about selected CSI-RS to base station.That is, the second measurement feedback can indicate that mobile station concentrates the needs of selection CSI-RS used in subsequent second stage in the first CIS-RS.It in the case, can be using the indicated CSI-RS of the second measurement feedback as the candidate CSI-RS of the first CSI-RS collection in step S503.
In the first phase, one-shot measurement can be carried out for each CSI-RS group.Correspondingly, it in step S502, can receive from the mobile third measurement feedback sent or the 4th measurement feedback.Then in step S503, feedback is measured according to third or the 4th measurement is fed back, is concentrated in the first CSI-RS and determines candidate CSI-RS.Combine Fig. 4 that third measurement feedback and the 4th measurement feedback is described above, therefore details are not described herein.
In step S504, in the second stage of measuring section, the candidate CSI-RS is sent to mobile station using Secondary resource indicated by Secondary resource configuration information.In second stage, base station periodically can send the candidate CSI-RS to mobile station.In addition, the length of first stage and second stage can be set as needed.
In the CSI-RS sending method according to the present embodiment, the CSI-RS for needing the first CSI-RS detected to concentrate is divided for multiple groupings, and sending each CSI-RS group using different resources reduces the requirement for mobile station performance to reduce channel state measurement and computation complexity.The signaling overheads of wave beam measurement is used in synchronization in addition, reducing.
In the following, describing mobile station according to an embodiment of the invention referring to Fig. 6.Fig. 6 is to show according to one embodiment of present invention, the exemplary block diagram of mobile station 600.As shown in fig. 6, mobile station 600 includes information acquisition unit 610, measuring unit 620.Other than this 2 units, mobile station 600 can also include other component, however, omitting its diagram and description herein since these components are unrelated with the content of the embodiment of the present invention.Further, since the detail for the operations described below that mobile station 600 according to an embodiment of the present invention executes is identical as the details described above with reference to Fig. 1-4, therefore the repeated description to same detail is omitted in order to avoid repeating herein.
Information acquisition unit 610 obtains the first resource configuration information of the first CSI-RS collection, wherein the first CSI-RS collection includes multiple CSI-RS groups, it include K CSI-RS in each CSI-RS group, K is the positive integer greater than 1.First resource configuration information may include CSI-RS group resource allocation information corresponding with each CSI-RS group respectively.For example, resource distribution corresponding to each CSI-RS group can be different.In addition, may include mutiple antennas port in a wave beam.In other words, 1 CSI-RS in CSI-RS group Comprising M antenna port, wherein M is positive integer.Hereinafter, one or more antenna ports corresponding to a CSI-RS are known as a CSI-RS resource.
An example according to the present invention, each antenna port can be generated by further wave beam forming, so that the different ports CSI-RS in a CSI-RS resource represent different beams.Another example according to the present invention, each antenna port can be by generating, so that the different ports CSI-RS in a CSI-RS resource represent antenna port non-precoded in the wave beam corresponding to the CSI-RS resource without further wave beam forming.
As described above, CSI-RS can be the CSI-RS by wave beam forming in embodiment according to the present invention.Specifically, each CSI-RS can correspond to a wave beam.The CSI-RS that first CSI-RS collection includes, which can correspond to base station, some or all of can generate wave beam.That is, in an embodiment according to the present invention, multiple CSI-RS for measuring the channel status that base station some or all of can generate wave beam are grouped.
An example according to the present invention, first resource configuration information further include with reference to sub-frame information.Specifically, the reference resources configuration of the first CSI-RS collection is indicated with reference to sub-frame information.For example, can indicate to refer to subframe for the one of entire first CSI-RS collection with reference to sub-frame information.In the case, CSI-RS group resource allocation information corresponding with each CSI-RS group can indicate the offset that the CSI-RS group is corresponding, configures relative to the reference resources.For example, can indicate that the CSI-RS group corresponds to the offset of the reference subframe of the first CSI-RS collection for the CSI-RS group resource distribution of a CSI-RS group.
An example according to the present invention, CSI-RS group resource allocation information corresponding with each CSI-RS group are mutually indepedent.In other words, the subframe where the CSI-RS in the CSI-RS group can be indicated for the CSI-RS group resource distribution of each CSI-RS group.For example, being only the subframe where the CSI-RS that can determine in the CSI-RS group by the CSI-RS group resource distribution of each CSI-RS group, in the case, first resource configuration information does not need to include the reference sub-frame information for the first CSI-RS collection.
In addition, information acquisition unit 610 also obtains the Secondary resource configuration information of the 2nd CSI-RS collection, wherein the 2nd CSI-RS collection includes 1 CSI-RS.The CSI-RS that 2nd CSI-RS is concentrated is also possible to the CSI-RS by wave beam forming.Wave beam corresponding to the CSI-RS that 2nd CSI-RS is concentrated can be identical as wave beam corresponding to the CSI-RS that the first CSI-RS is concentrated.Alternatively, wave beam corresponding to the CSI-RS that the 2nd CSI-RS is concentrated can be different from wave beam corresponding to the CSI-RS that the first CSI-RS is concentrated.
In addition, the CSI-RS that the 2nd CSI-RS is concentrated may include what N number of antenna port was formed, wherein N is positive integer, and the quantity N for forming the antenna port of the CSI-RS of the 2nd CSI-RS concentration can be with The quantity M for forming the antenna port of the CSI-RS of the first CSI-RS concentration is identical or different.
Then, measuring unit 620 carry out channel state measurement using Secondary resource indicated by first resource indicated by first resource configuration information and Secondary resource configuration information.An example according to the present invention, channel state measurement can be divided into two stages.For example, in the first stage for wherein carrying out rough beam selection, and in the second stage for wherein carrying out channel state measurement for particular beam.
An example according to the present invention, in the first stage of a measuring section, then, the first resource and the Secondary resource can be used to carry out channel state measurement for measuring unit 620.For example, in the first phase, as unit of CSI-RS group, using CSI-RS group resource indicated by CSI-RS group resource allocation information corresponding with each CSI-RS group to carry out channel state measurement respectively, and obtain the first measurement result.In addition, then, measuring unit 620 carries out channel state measurement after carrying out channel state measurement using the corresponding CSI-RS group resource of a CSI-RS group every time, using Secondary resource, and obtains the second measurement result.
Fig. 7 is to show another embodiment according to the present invention, 600 ' exemplary block diagram of mobile station.As shown in Figure 7, mobile station 600 ' according to an embodiment of the present invention includes other than information acquisition unit 610 identical with mobile station 600, measuring unit 620, it may also include determining that unit 630 and transmission unit 640, with the information to base station feedback about CSI-RS measurement result.
Specifically, channel state measurement is being carried out to a CSI-RS group, and after the first measurement result of acquisition, determination unit 630 can determine the candidate CSI-RS in the CSI-RS group according to the first measurement result of each CSI-RS group.Transmission unit 640 sends the first measurement feedback about the candidate CSI-RS to base station.An example according to the present invention, the first measurement feedback can be the part CSI feedback for a CSI-RS group.For example, the first measurement feedback can wrap the CSI-RS resource instruction (CSI-RS Resource Indicator, CRI) of the instruction occupied resource of candidate CSI-RS.CRI can indicate serial number of the candidate CSI-RS in the CSI-RS group where the candidate CSI-RS.Alternatively, CRI can indicate the serial number that candidate CSI-RS is concentrated in entire first CSI-RS.
Furthermore, an example according to the present invention, the first measurement feedback may also include according to the measurement order instruction obtained (Rank Indicator, RI) for corresponding CSI-RS group, initial pre-coding matrix instruction (Precoder Matrix Indicator, PMI).In addition, in order to make base station obtain the more information about candidate CSI-RS, the first measurement feedback may also include channel quality instruction (Channel Quality Indicator, CQI).
Then, base station can send the CSI-RS for particular beam according to the first measurement feedback using Secondary resource.For example, the particular beam can be the indicated candidate beam of the first measurement feedback.Example again Such as, the particular beam can be according to the first measurement feedback, be adjusted rear wave beam obtained based on candidate beam.As described above, Secondary resource can be used to carry out channel state measurement for measuring unit 620, and obtain the second measurement result after carrying out channel state measurement using the corresponding CSI-RS group resource of a CSI-RS group every time.
Transmission unit 640 can also send the second measurement feedback about second measurement result to base station.An a example according to the present invention, transmission unit 640 can carry out the second measurement feedback after carrying out channel state measurement using the Secondary resource for the candidate CSI-RS in a CSI-RS group every time.Second measurement feedback may include the complete CSI feedback about the particular beam.For example, the second measurement feedback may include RI, PMI, CQI that basis obtains the measurement of the CSI-RS of the particular beam.Alternatively, determination unit 630 can also be to after completing for the measurement of all CSI-RS groups, according to the second measurement result of each CSI-RS group, selection needs the CSI-RS used in subsequent second stage, and the second measurement feedback of the transmission of transmission unit 640 can only include the measurement result about selected CSI-RS.
In this example, each CSI-RS group can be measured twice, that is, the measurement for all CSI-RS in the CSI-RS group and the measurement for specific one CSI-RS in the CSI-RS group.And feedback measurement can be distinguished.Due to carrying out more targeted measurement also for the CSI-RS group after the measurement of all CSI-RS in for a CSI-RS group, it may include rough measurement result in the first measurement feedback.
In addition, another example according to the present invention, in the first stage of a measuring section, measuring unit 620 can be used only the first resource and carry out channel state measurement.For example, in the first phase, as unit of CSI-RS group, measuring unit 620 uses CSI-RS group resource indicated by CSI-RS group resource allocation information corresponding with each CSI-RS group to carry out channel state measurement respectively, and obtains third measurement result.
Preferably, determination unit 630 can carry out channel state measurement to a CSI-RS group, and after obtaining third measurement result, it can be according to the third measurement result of each CSI-RS group, determine the candidate CSI-RS in the CSI-RS group, and transmission unit 640 can send to base station and measure feedback about the third of the candidate CSI-RS.Alternatively, determination unit 630 can also be to after completing for the measurement of all CSI-RS groups, according to the third measurement result of each CSI-RS group, selection needs the candidate CSI-RS used in subsequent second stage, and transmission unit 640 sends the 4th measurement feedback about candidate CSI-RS to base station.
In this example, one-shot measurement is only carried out for each CSI-RS group, and measurement knot can be fed back Fruit, therefore the measurement result fed back should include complete CSI feedback.
In addition, measuring unit 620 carries out channel state measurement using Secondary resource in the second stage of measuring section.As described above, Secondary resource is the occupied resource of CSI-RS that the 2nd CSI-RS is concentrated, and it includes 1 CSI-RS that the 2nd CSI-RS, which is concentrated,.Base station can be fed back according to the measurement of mobile station in the first stage, determine that the 2nd CSI-RS concentrates the CSI-RS for including.
Although base station can be fed back according to the measurement of mobile station in the first stage determines that the 2nd CSI-RS concentrates the CSI-RS for including, the 2nd CSI-RS that the CSI-RS for including is concentrated the CSI-RS for including can also to be concentrated different from the first CSI-RS.Therefore, the first resource for the first CSI-RS collection and the Secondary resource for the 2nd CSI-RS collection can be independently configured.As described above, in the first phase, the measurement result that mobile station can only carry out one-shot measurement, and be fed back for each CSI-RS group includes complete CSI feedback.In the case, when Secondary resource indicated by first resource indicated by the first resource configuration information described in the first stage and Secondary resource configuration information is located in same subframe, measuring unit 620 carries out channel state measurement using first resource indicated by first resource configuration information, without considering Secondary resource indicated by Secondary resource configuration information.
In the mobile station according to the present embodiment, divided by the CSI-RS that the first CSI-RS that will need to detect is concentrated for multiple groupings, and distributing different resources to each CSI-RS group reduces the requirement for mobile station performance to reduce channel state measurement and computation complexity.The signaling overheads of wave beam measurement is used in synchronization in addition, reducing.
In the following, describing base station according to an embodiment of the invention referring to Fig. 8.Fig. 8 is to show according to an embodiment of the present invention, the exemplary block diagram of base station 800.As shown in figure 8, base station 800 includes transmission unit 810, receiving unit 820 and determination unit 830.Other than this 3 units, base station 800 can also include other component, however, omitting its diagram and description herein since these components are unrelated with the content of the embodiment of the present invention.Further, since the detail for the operations described below that base station 800 according to an embodiment of the present invention executes is identical as the details described above with reference to Fig. 5, therefore the repeated description to same detail is omitted in order to avoid repeating herein.
Transmission unit 810 is in the first stage of a measuring section, the CSI-RS that the first CSI-RS is concentrated is sent to mobile station using first resource, wherein the first CSI-RS collection includes multiple CSI-RS groups, it include K CSI-RS in each CSI-RS group, K is the positive integer greater than 1, and first resource includes CSI-RS group resource corresponding with each CSI-RS group respectively.
Receiving unit 820 is received from the mobile channel state measurement feedback sent.Then determination unit 830 is fed back according to the received channel state measurement of institute, is concentrated in the first CSI-RS and is determined candidate CSI-RS.Root According to an example of the invention, channel state measurement feedback may include that mobile station feeds back the CSI-RS group channel state measurement of each CSI-RS group.Determination unit 830 can concentrate the CSI-RS group channel state measurement of multiple CSI-RS groups to feed back according to the first CSI-RS, concentrate in the first CSI-RS and determine candidate CSI-RS.
Such as, it is such as above described in conjunction with Figure 3, in the first phase, each CSI-RS group can be measured twice, i.e., measurement for all CSI-RS in the CSI-RS group and the measurement for specific one CSI-RS in the CSI-RS group, and channel state measurement feedback may include the first measurement feedback and the second measurement feedback.
Specifically, receiving unit 820 can receive mobile station and feed back to the first measurement of the CSI-RS group.Determination unit 830 can be fed back according to the first of each CSI-RS group the measurement, the CSI-RS to be measured in determination in the CSI-RS group.Then, transmission unit 840 can send CSI-RS to be measured to mobile station using Secondary resource indicated by Secondary resource configuration information according to the CSI-RS to be measured in the CSI-RS group.Furthermore in the first phase, receiving unit 820 also can receive mobile station and feed back to the second measurement of CSI-RS to be measured.Determination unit 830 can be fed back according to the second measurement, concentrated in the first CSI-RS and determined candidate CSI-RS.
For example, the second measurement feedback can indicate the best CSI-RS of the channel status in each CSI-RS group.In the case, determination unit 830 can be fed back according to the second of each CSI-RS group the measurement, in the best CSI-RS of the channel status of each CSI-RS group, determine candidate CSI-RS.In another example, mobile station can be after obtaining for the second measurement result of the first CIS-RS all CSI-RS groups concentrated, according to the second measurement result of each CSI-RS group, selection needs the CSI-RS used in subsequent second stage, and sends the measurement result about selected CSI-RS to base station.That is, the second measurement feedback can indicate that mobile station concentrates the needs of selection CSI-RS used in subsequent second stage in the first CIS-RS.In the case, determination unit 830 can be using the indicated CSI-RS of the second measurement feedback as the candidate CSI-RS of the first CSI-RS collection.
In the first phase, one-shot measurement can be carried out for each CSI-RS group.Correspondingly, receiving unit 820 can receive from the mobile third measurement feedback sent or the 4th measurement feedback.Then in step S503, feedback is measured according to third or the 4th measurement is fed back, is concentrated in the first CSI-RS and determines candidate CSI-RS.Combine Fig. 4 that third measurement feedback and the 4th measurement feedback is described above, therefore details are not described herein.
In addition, transmission unit sends the candidate CSI-RS to mobile station in the second stage of measuring section, using Secondary resource indicated by Secondary resource configuration information.In second stage, base station can week Phase property the candidate CSI-RS is sent to mobile station.In addition, the length of first stage and second stage can be set as needed.
In the base station according to the present embodiment, the CSI-RS for needing the first CSI-RS detected to concentrate is divided for multiple groupings, and sending each CSI-RS group using different resources reduces the requirement for mobile station performance to reduce channel state measurement and computation complexity.The signaling overheads of wave beam measurement is used in synchronization in addition, reducing.
The operation of above-mentioned mobile station 600,600 ' and base station 800 can also be realized, and may further be realized by the combination of the two by hardware realization by the software module executed by processor.For example, the measuring unit 620 and determination unit 630 in mobile station can be realized by the software module executed by processor.In another example the determination unit 830 in base station can be realized by the software module executed by processor.
Software module can be disposed in the storage medium of arbitrary format, such as RAM (random access storage device), flash memory, ROM (read-only memory), EPROM (erasable programmable ROM), EEPROM (electrically erasable ROM), register, hard disk, removable disk and CD-ROM.
This storage medium is connected to processor, allows processor to the storage medium information to be written or from the read information.This storage medium can also be accumulated in the processor.This storage medium and processor can be disposed in mobile station 600,600 ' and base station 800.As discrete assembly, this storage medium and processor can be disposed in mobile station 600,600 ' and base station 800.
Therefore, the present invention is explained in detail by using above-described embodiment；However, those skilled in the art should understand that the present invention is not limited to the embodiments of resonable explanation.The present invention may be implemented as correction, modification mode without departing substantially from the scope of the present invention being defined by the claims.Therefore, the description of specification is intended merely to explain example, and does not apply any restrictions meaning to the present invention.

Claims (29)

  1. A kind of channel state measurement method executed by mobile station, comprising:
    Obtain the first resource configuration information of the first channel state information reference signals (CSI-RS) collection, wherein the first CSI-RS collection includes multiple CSI-RS groups, it include K CSI-RS in each CSI-RS group, K is to include CSI-RS group resource allocation information corresponding with each CSI-RS group respectively greater than 1 positive integer and the first resource configuration information；
    The Secondary resource configuration information of the 2nd CSI-RS collection is obtained, wherein the second CSI-RS collection includes 1 CSI-RS；And
    Channel state measurement is carried out using Secondary resource indicated by first resource indicated by the first resource configuration information and Secondary resource configuration information.
  2. The method as described in claim 1, wherein
    The first resource configuration information further includes referring to sub-frame information,
    The reference resources configuration that the first CSI-RS collection is indicated with reference to sub-frame information,
    CSI-RS group resource allocation information corresponding with each CSI-RS group indicates the offset that the CSI-RS group is corresponding, configures relative to the reference resources.
  3. The method as described in claim 1, wherein
    CSI-RS group resource allocation information corresponding with each CSI-RS group is mutually indepedent.
  4. Method as described in any one of claim 1-3, wherein
    1 CSI-RS in CSI-RS group includes M antenna port,
    1 CSI-RS that 2nd CSI-RS is concentrated includes N number of antenna port,
    M and N is positive integer, and M and N is identical or different.
  5. Method as described in any one of claim 1-3, wherein including: using the progress of Secondary resource indicated by first resource indicated by the first resource configuration information and Secondary resource configuration information channel state measurement
    In the first stage of a measuring section, channel state measurement is carried out using the first resource and the Secondary resource；
    In the second stage of the measuring section, channel state measurement is carried out using the Secondary resource.
  6. Method as claimed in claim 5, wherein carrying out channel state measurement using the first resource and the Secondary resource includes: in the first stage of a measuring section
    In the first stage, as unit of CSI-RS group, use respectively and each CSI-RS group CSI-RS group resource indicated by corresponding CSI-RS group resource allocation information carries out channel state measurement, and obtains the first measurement result；And
    After carrying out channel state measurement using the corresponding CSI-RS group resource of a CSI-RS group every time, channel state measurement is carried out using the Secondary resource, and obtain the second measurement result.
  7. Method as claimed in claim 6, further includes:
    According to the first measurement result of each CSI-RS group, the candidate CSI-RS in the CSI-RS group is determined；
    The first measurement feedback about the candidate CSI-RS is sent to base station；And
    The second measurement feedback about second measurement result is sent to base station.
  8. Method as described in any one of claim 1-3, wherein including: using the progress of Secondary resource indicated by first resource indicated by the first resource configuration information and Secondary resource configuration information channel state measurement
    In the first stage of a measuring section, channel state measurement is carried out using the first resource；
    In the second stage of the measuring section, channel state measurement is carried out using the Secondary resource.
  9. Method according to claim 8, wherein carrying out channel state measurement using the first resource includes: in the first stage of a measuring section
    In the first stage, as unit of CSI-RS group, CSI-RS group resource indicated by CSI-RS group resource allocation information corresponding with each CSI-RS group is used to carry out channel state measurement respectively, and obtain third measurement result.
  10. Method as claimed in claim 9, further includes:
    According to the third measurement result of each CSI-RS group, the candidate CSI-RS in the CSI-RS group is determined；And
    It is sent to base station and measures feedback about the third of the candidate CSI-RS.
  11. Method as claimed in claim 9, further includes:
    According to the third measurement result of the multiple CSI-RS group, candidate CSI-RS is selected from multiple CSI-RS groups；And
    The 4th measurement feedback about the candidate CSI-RS is sent to base station.
  12. Method according to claim 8, wherein carrying out channel state measurement using the first resource includes: in the first stage of a measuring section
    When Secondary resource indicated by first resource indicated by the first resource configuration information described in the first stage and Secondary resource configuration information is located in same subframe, channel state measurement is carried out using first resource indicated by first resource configuration information, without considering second indicated by Secondary resource configuration information Resource.
  13. A kind of channel state information reference signals (CSI-RS) sending method executed by base station, comprising:
    In the first stage of a measuring section, the CSI-RS that the first CSI-RS is concentrated is sent to mobile station using first resource, wherein
    The first CSI-RS collection includes multiple CSI-RS groups,
    It include K CSI-RS in each CSI-RS group, K is the positive integer greater than 1,
    The first resource includes CSI-RS group resource corresponding with each CSI-RS group respectively,
    In the first phase, as unit of CSI-RS group, the CSI-RS in the CSI-RS group is sent using CSI-RS group resource corresponding with each CSI-RS group；
    It receives from the mobile channel state measurement feedback sent；
    According to the received channel state measurement feedback of institute, is concentrated in the first CSI-RS and determine candidate CSI-RS；And
    In the second stage of the measuring section, the candidate CSI-RS is sent to mobile station using Secondary resource indicated by Secondary resource configuration information.
  14. Method as claimed in claim 13, wherein
    The channel state measurement feedback includes that mobile station feeds back the CSI-RS group channel state measurement of each CSI-RS group；
    According to the received channel state measurement feedback of institute, is concentrated in the first CSI-RS and determine that candidate CSI-RS includes:
    It is fed back according to the CSI-RS group channel state measurement of the multiple CSI-RS group, is concentrated in the first CSI-RS and determine candidate CSI-RS.
  15. Method according to claim 13 or 14, wherein
    The channel state measurement feedback is fed back including the first measurement feedback and the second measurement,
    It receives from the mobile channel state measurement feedback sent and includes:
    In the first stage, receiving mobile feeds back the first measurement of the CSI-RS group；
    The method also includes:
    In the first stage, fed back according to the first of each CSI-RS group the measurement, the CSI-RS to be measured in determination in the CSI-RS group；And
    In the first stage, according to the CSI-RS to be measured in the CSI-RS group, the CSI-RS to be measured is sent to mobile station using Secondary resource indicated by Secondary resource configuration information,
    It receives from the mobile channel state measurement feedback sent further include:
    In the first stage, receiving mobile feeds back the second measurement of the CSI-RS to be measured.
  16. A kind of mobile station, comprising:
    Information acquisition unit, it is configured to obtain the first resource configuration information of the first channel state information reference signals (CSI-RS) collection, wherein the first CSI-RS collection includes multiple CSI-RS groups, it include K CSI-RS in each CSI-RS group, K is the positive integer greater than 1, the first resource configuration information includes CSI-RS group resource allocation information corresponding with each CSI-RS group respectively, and the Secondary resource configuration information of the 2nd CSI-RS collection is also obtained, wherein the second CSI-RS collection includes 1 CSI-RS；And
    Measuring unit is configured so that Secondary resource indicated by first resource indicated by the first resource configuration information and Secondary resource configuration information carries out channel state measurement.
  17. Mobile station as claimed in claim 16, wherein
    The measuring unit carries out channel state measurement in the first stage of a measuring section, using the first resource and the Secondary resource, and in the second stage of the measuring section, carries out channel state measurement using the Secondary resource.
  18. Mobile station as claimed in claim 17, wherein
    The measuring unit is in the first stage, as unit of CSI-RS group, uses CSI-RS group resource indicated by CSI-RS group resource allocation information corresponding with each CSI-RS group to carry out channel state measurement respectively, and obtain the first measurement result；And after carrying out channel state measurement using the corresponding CSI-RS group resource of a CSI-RS group every time, channel state measurement is carried out using the Secondary resource, and obtain the second measurement result.
  19. Mobile station as claimed in claim 18, further includes:
    Determination unit is configured to the first measurement result according to each CSI-RS group, determines the candidate CSI-RS in the CSI-RS group；And
    Transmission unit is configured to send the first measurement feedback about the candidate CSI-RS to base station, and sends the second measurement feedback about second measurement result to base station.
  20. As claimed in claim 19 mobile station, wherein
    First feedback includes the CSI-RS resource instruction of the instruction occupied resource of the candidate CSI-RS.
  21. Mobile station as claimed in claim 20, wherein
    First feedback further includes indicating about order instruction, initial pre-coding matrix instruction and/or channel quality.
  22. Mobile station as claimed in claim 16, wherein
    The measuring unit carries out channel state measurement in the first stage of a measuring section, using the first resource, and in the second stage of the measuring section, carries out channel state measurement using the Secondary resource.
  23. Mobile station as claimed in claim 22, wherein
    The measuring unit is in the first stage, as unit of CSI-RS group, uses CSI-RS group resource indicated by CSI-RS group resource allocation information corresponding with each CSI-RS group to carry out channel state measurement respectively, and obtain third measurement result.
  24. Mobile station as claimed in claim 23, further includes:
    Determination unit is configured to the third measurement result according to each CSI-RS group, determines the candidate CSI-RS in the CSI-RS group；And
    Transmission unit is configured to send the third measurement feedback about the candidate CSI-RS to base station.
  25. Mobile station as claimed in claim 23, further includes:
    Determination unit is configured to the third measurement result according to the multiple CSI-RS group, and candidate CSI-RS is selected from multiple CSI-RS groups；And
    Transmission unit is configured to send the 4th measurement feedback about the candidate CSI-RS to base station.
  26. Mobile station as claimed in claim 22, wherein
    When Secondary resource indicated by first resource indicated by measuring unit first resource configuration information described in the first stage and Secondary resource configuration information is located in same subframe, channel state measurement is carried out using first resource indicated by first resource configuration information, without considering Secondary resource indicated by Secondary resource configuration information.
  27. A kind of base station, comprising:
    Transmission unit was configured in the first stage of a measuring section, sent the CSI-RS that the first CSI-RS is concentrated to mobile station using first resource, wherein
    The first CSI-RS collection includes multiple CSI-RS groups,
    It include K CSI-RS in each CSI-RS group, K is the positive integer greater than 1,
    The first resource includes CSI-RS group resource corresponding with each CSI-RS group respectively,
    The transmission unit in the first phase, as unit of CSI-RS group, the CSI-RS in the CSI-RS group is sent using CSI-RS group resource corresponding with each CSI-RS group；
    Receiving unit is configured to receive from the mobile channel state measurement feedback sent；And
    Determination unit is configured to concentrate in the first CSI-RS according to the received channel state measurement feedback of institute and determine candidate CSI-RS；And
    The transmission unit is additionally configured in the second stage of the measuring section, sends the candidate CSI-RS to mobile station using Secondary resource indicated by Secondary resource configuration information.
  28. Base station as claimed in claim 27, wherein
    The channel state measurement feedback includes that mobile station feeds back the CSI-RS group channel state measurement of each CSI-RS group；
    The determination unit is fed back according to the CSI-RS group channel state measurement of the multiple CSI-RS group, is concentrated in the first CSI-RS and is determined candidate CSI-RS.
  29. Base station as described in claim 27 or 28, wherein
    The channel state measurement feedback is fed back including the first measurement feedback and the second measurement,
    For the receiving unit in the first stage, receiving mobile feeds back the first measurement of the CSI-RS group,
    The determination unit was additionally configured in the first stage, was fed back according to the first of each CSI-RS group the measurement, the CSI-RS to be measured in determination in the CSI-RS group,
    The transmission unit was additionally configured in the first stage, according to the CSI-RS to be measured in the CSI-RS group, sent the CSI-RS to be measured to mobile station using Secondary resource indicated by Secondary resource configuration information, and
    For the receiving unit also in the first stage, receiving mobile feeds back the second measurement of the CSI-RS to be measured.
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