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CN107370556A - Channel quality feedback method, user terminal, the control method of channel quality measurement and base station - Google Patents

Channel quality feedback method, user terminal, the control method of channel quality measurement and base station Download PDF

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Publication number
CN107370556A
CN107370556A CN201610318607.3A CN201610318607A CN107370556A CN 107370556 A CN107370556 A CN 107370556A CN 201610318607 A CN201610318607 A CN 201610318607A CN 107370556 A CN107370556 A CN 107370556A
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CN
China
Prior art keywords
user
user terminal
ports
measurement
base station
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610318607.3A
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Chinese (zh)
Inventor
王新
那崇宁
侯晓林
蒋惠玲
柿岛佑
柿岛佑一
永田聡
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NTT Docomo Inc
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NTT Docomo Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NTT Docomo Inc filed Critical NTT Docomo Inc
Priority to CN201610318607.3A priority Critical patent/CN107370556A/en
Priority to JP2018548820A priority patent/JP6917385B2/en
Priority to PCT/CN2017/081826 priority patent/WO2017193808A1/en
Priority to CN201780028373.1A priority patent/CN109314587B/en
Publication of CN107370556A publication Critical patent/CN107370556A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0452—Multi-user MIMO systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/336—Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0417—Feedback systems
    • H04B7/0421—Feedback systems utilizing implicit feedback, e.g. steered pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiments of the invention provide a kind of channel quality feedback method, user terminal, the control method of channel quality measurement and base station.In one example, the channel quality feedback method includes：User terminal (UE) carries out channel quality measurement in the first reference signal port, obtains the first measurement feedback to base station；Whether the trigger condition of detection Second Type measurement meets, when the trigger condition is met, channel quality measurement of the user terminal when the second reference signal port carries out multi-subscriber dispatching, obtains the second measurement feedback to base station.The degree of accuracy of channel-quality feedback when the solution of the present invention is intended to improve multi-subscriber dispatching.

Description

Channel quality feedback method, user terminal, the control method of channel quality measurement and base station
Technical field
The present invention relates to the communication technology, espespecially a kind of channel quality feedback method, user terminal, channel matter The control method of measurement and base station.
Background technology
For multi-user's multiple-input, multiple-output (Multi-User Multiple-Input Multiple-Output, MU-MIMO) technology carries out channel quality measurement and channel condition information (channel state Information, CSI) estimation, in measurement multi-user interference (Multi-User Interference, MUI) When, an awkward situation be present：MUI is heavily dependent on user's scheduling result, but actual User's scheduling depends on multi-user channel quality instruction (Multi-User Channel Quality again Indicator, MU-CQI) feedback.
The content of the invention
The embodiments of the invention provide a kind of channel quality feedback method, user terminal, channel quality measurement Control method and base station, it is intended to the degree of accuracy of channel-quality feedback when improving multi-user transmission.
In one example, a kind of channel quality feedback method includes：
User terminal (UE) carries out channel quality measurement in the first reference signal port, obtains the first measurement knot Fruit feeds back to base station；
Whether the trigger condition of detection Second Type measurement meets, described when the trigger condition is met Channel quality measurement of the user terminal when the second reference signal port carries out multi-subscriber dispatching, obtains the second survey Amount result feeds back to base station.
In one example, a kind of control method of channel quality measurement includes：
Base station notifies user terminal (UE) to carry out channel in the first reference signal port by conventional configuration information Mass measurement, and receive the first measurement result of user terminal feedback；
The base station carries out multi-subscriber dispatching according to first measurement result, and is adjusted in the user terminal When spending, the trigger condition that Second Type measures is arranged to open, so as to trigger the user terminal the Channel quality measurement and the second measurement result of feedback during the progress multi-subscriber dispatching of two reference signal ports.
In one example, a kind of user terminal includes：
Processor；
Non-volatile machine readable storage medium storing program for executing；And
It is stored in the non-volatile machine readable storage medium storing program for executing, by the program module of the computing device；
Wherein, described program module is used for：
Channel quality measurement is carried out in the first reference signal port, obtains the first measurement feedback to base station；
Whether the trigger condition of detection Second Type measurement meets, when the trigger condition is met, the Two reference signal ports carry out multi-subscriber dispatching when channel quality measurement, obtain the second measurement feedback to Base station.
In one example, a kind of base station includes：
Processor；
Non-volatile machine readable storage medium storing program for executing；And
It is stored in the non-volatile machine readable storage medium storing program for executing, by the program module of the computing device；
Wherein, described program module is used for：
User terminal UE is notified to carry out channel quality survey in the first reference signal port by conventional configuration information Amount, and receive the first measurement result of user terminal feedback；
Multi-subscriber dispatching is carried out according to first measurement result, and when the user terminal is scheduled, by the The trigger condition of two categorical measures is arranged to open, so as to trigger the user terminal at the second reference signal end Channel quality measurement and the second measurement result of feedback during mouth progress multi-subscriber dispatching.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the method 100 of channel-quality feedback in the embodiment of the present invention.
Fig. 2 is the schematic flow sheet of the method 200 of channel-quality feedback in the embodiment of the present invention.
Fig. 3 is the multi-subscriber dispatching schematic diagram in the embodiment of the present invention.
Fig. 4 is the schematic flow sheet of the method 400 of channel-quality feedback in the embodiment of the present invention.
Fig. 5 is the schematic flow sheet of the method 500 of channel-quality feedback in the embodiment of the present invention.
Fig. 6 is the schematic flow sheet of the method 600 of channel-quality feedback in the embodiment of the present invention.
Fig. 7 is the schematic flow sheet of the method 700 of channel-quality feedback in the embodiment of the present invention.
Fig. 8 is the schematic flow sheet of the method 800 of channel-quality feedback in the embodiment of the present invention.
Fig. 9 is the schematic flow sheet of the method 900 of channel-quality feedback in the embodiment of the present invention.
Figure 10 is the schematic flow sheet of the method 1000 of channel-quality feedback in the embodiment of the present invention.
Figure 11 is the transmission schematic diagram of multi-user's CQI information position in the embodiment of the present invention.
Figure 12 is the transmission schematic diagram of multi-user's CQI information position in the embodiment of the present invention.
Figure 13 is the schematic flow sheet of the method 1300 of channel-quality feedback in the embodiment of the present invention.
Figure 14 is the schematic flow sheet of the method 1400 of channel-quality feedback in the embodiment of the present invention.
Figure 15 is the schematic flow sheet of the control method 1500 of channel quality measurement in the embodiment of the present invention.
Figure 16 is the schematic flow sheet of the control method 1600 of channel quality measurement in the embodiment of the present invention.
Figure 17 is the schematic flow sheet of the control method 1700 of channel quality measurement in the embodiment of the present invention.
Figure 18 is the schematic flow sheet of the control method 1800 of channel quality measurement in the embodiment of the present invention.
Figure 19 is the schematic flow sheet of the control method 1900 of channel quality measurement in the embodiment of the present invention.
Figure 20 is the structural representation of user terminal 2000 in the embodiment of the present invention.
Figure 21 is the structural representation of base station 2100 in the embodiment of the present invention.
Embodiment
For the objects, technical solutions and advantages of the present invention are more clearly understood, develop simultaneously referring to the drawings Embodiment, the present invention is described in more detail.
The embodiments of the invention provide a kind of channel quality measurement and the mechanism of feedback, for user terminal increase Second Type measures this measurement process, and letter during multi-subscriber dispatching is carried out using the second reference signal port Road mass measurement, multi-user interference (MUI) is obtained, channel quality during so as to improve multi-user transmission The degree of accuracy of feedback.In one example, the Second Type measurement is controlled by trigger condition, is non- Periodically.For example when certain user terminal on base station scheduling and find that the data volume of the user terminal is larger When, the trigger condition can be arranged to open, so as to start Second Type measurement for the user terminal.
Fig. 1 is the schematic flow sheet of the method 100 of channel-quality feedback in the embodiment of the present invention.At one In example, this method 100 includes following operation.
In step 101, user terminal (UE) carries out channel quality measurement in the first reference signal port, The first measurement feedback is obtained to base station.
It may be noted that step 101 execution is first kind measurement, the first reference signal port can To be normal channel status information pilot tone (CSI-RS) port or the proprietary pilot tone of cell (Cell-specific reference signal, CRS) port.
In one example, the conventional CSI-RS ports be base station pre-set be used for the first kind The CSI-RS ports of measurement.The first kind measurement is existing measurement process, can periodically survey Amount or aperiodicity measure, and carry the first CQI in the first obtained measurement result, generally In the case of that measure is single user CQI.That is, the user terminal is carried out in the first reference signal port Measurement can under the configuration of base station the cycle carry out, can also by base station descending control signaling triggering under Irregularly carry out.It may be noted that the first kind measurement obtain be inter-cell interference information.
In step 102, whether the trigger condition of detection Second Type measurement meets, when the trigger condition obtains To when meeting, channel quality of the user terminal when the second reference signal port carries out multi-subscriber dispatching Measurement, obtains the second measurement feedback to base station.
In one example, the second reference signal port can be demodulation pilot tone (DMRS) port. The second reference signal port can also be the special CSI-RS ports of one group of user pre-set, be used for Second Type measures.In one example, the conventional CSI-RS ports and the special CSI-RS of the user Port is typically difference, and the two is not multiplexed.In one example, one of described trigger condition is the use Family terminal receives the data-signal of itself, namely the user terminal is scheduled in downlink transfer, this Shi Zhihang Second Type measurement is obtained more accurate by the actual MUI measured in this cell MU-CQI。
In practical application, a new feedback model can be arranged between base station and user terminal in advance.One In individual example, the new feedback model can be named as pattern 4-0 or pattern 3-3.In one example, The new feedback model can include：Subband MU-CQI, for fed back through DMRS port measurement or The multi-user CQI that the special CSI-RS ports measurement of user obtains.Further, the new feedback model is also It can include：Broadband MU-CQI.When knowing resource point in the 2nd DCI that user terminal is sent from base station When with type being continuous (for example the value of resource allocation type is 0), the user terminal can not be to base Feedback of standing broadband MU-CQI.2nd DCI can use DCI 2C or DCI 2D forms, be used for Communicating downlink permits (DL grant).When the resource allocation type is discrete (such as resource point When value with type is 1), the user terminal obtains institute after all subband MU-CQI are averaged State broadband MU-CQI and feed back to base station.Further, the new feedback model can include and agreement Pattern 3-0 or pattern 3-1 or pattern 3-2 identical fields defined in TS36.213.
It may be noted that the first kind measurement and Second Type measurement described in Fig. 1 are two kinds in data communication Different types of measurement process, precedence relationship therebetween do not use restraint.In one example, Can carry out the after carrying out Second Type measurement or Second Type measurement after first kind measurement One categorical measures, it can also be first kind measurement and Second Type measurement while occur.In an example In, first kind measurement and Second Type measurement are separate, and first kind measurement is periodically to send out Raw, its time of origin is not exposed to the influence of Second Type measurement.In one example, Second Type The supplement as first kind measurement is measured, for improving the degree of accuracy of channel-quality feedback.
Fig. 2 is the schematic flow sheet of the method 200 of channel-quality feedback in the embodiment of the present invention.At one In example, this method 200 includes following operation.
In step 201, user terminal carries out channel quality measurement in the first reference signal port, obtains the One measurement feedback is to base station.In one example, the user terminal measures in first kind measurement Be SU-CQI.
In step 202, whether the trigger condition of user terminal detection Second Type measurement meets.
In step 203, when the trigger condition is met, the user terminal calculates this multi-user The general power of resource element (RE) in all DMRS ports used in scheduling.
In step 204, channel estimation is carried out in the DMRS port for distribute to the user terminal, is obtained The signal power of the user terminal.
It may be noted that the precoding mode that CSI-RS ports use with DMRS port is different, with CSI-RS Port is compared, and power estimator signal specific aim is stronger in DMRS port, and estimated result is more accurate.
In step 205, the user terminal obtains disturbing work(according to the general power and the signal power Rate.
In one example, the general power is subtracted into the signal power, you can obtain the interference work( Rate.Because what user terminal calculated is the general power of all DMRS ports in multi-subscriber dispatching, therefore obtain To jamming power in also comprising the actual MUI in this cell.
In step 206, the user terminal obtains the second survey using the signal power and the jamming power Result is measured, is sent to the base station.
In one example, the second measurement feedback is obtained described in step 206 includes to base station：According to The signal power and jamming power generation multi-user CQI, and the multi-user CQI is increased to The base station is sent in second measurement result.Specifically, one can be set in second measurement result Field, for carrying the multi-user CQI.In one example, the multi-user CQI includes subband MU-CQI, it can also further comprise broadband MU-CQI.
Assuming that communication system includes K subband, measurement window includes N number of TTI.In the measurement window, Include M the first reference signal ports or the second reference signal port on k-th of subband, at above-mentioned end The reception signal of user terminal can use y on mouthk,mRepresent, wherein m=1 ..., M.
First, the general power P of the reception signal on each subband is calculated according to formula (1)SIN,k。
Then, the reference signal transmitting sequence arranged based on reception signal and with base station is in the user terminal Carried out on second reference signal port (can be DMRS port or the special CSI-RS ports of user) Channel estimation, obtain channel estimation results hk,m, and signal power P is calculated according to formula (2)S,k。
Then, SINR is calculated according to formula (3), and the SINR is converted in units of dB.
Finally, according to the quantizing rule of regulation by SINRkIt is quantified as discrete values.Such as can be by SINRk Quantify onto 27 rank centrifugal pumps, CQI values corresponding to difference are 0-26.
It may be noted that for first kind measurement, PSIN,kComprising signal power, noise power and come From the jamming power of other cells；For Second Type measurement, PSIN,kIn still further comprise and come from The jamming power of this cell other users terminal.
In one example, as the SINR in formula (3)kFor subband (subband) SINR when, Corresponding obtained CQI is subband CQI.
For broadband SINR and broadband CQI, the SINR on each subband can averagely be obtained broadband SINR, then just can obtain broadband CQI after broadband SINR is quantified.
In one example, MU-CQI can also be calculated using following methods.
First, P is calculated according to formula (2)S,k。
Then, user estimates other users based on the reference signal sequence of reception signal and other users terminal The channel situation of terminal, obtained channel estimation results areWherein P is that base station is used User's number when family is dispatched, user's number is to be notified by base station by downlink signaling to user.
Then, the user terminal is according to jamming power during formula (4) calculating multi-subscriber dispatching, and measures Inter-cell interference and noise power PIN,k。
In one example, the user terminal can measure P based on zero energy reference signalIN,k.In the zero power In rate reference signal, the base station of the user terminal not transmission power.
Finally, the user terminal calculates multi-user SINR according to formula (5), and by the multi-user SINR MU-CQI is obtained after quantization.
In one example, the multi-user SINR can quantify onto the exponent number of setting, for example carry out 27 Rank quantifies, corresponding MU-CQI serial number 0~26.
, can be by after the SNR mean deviations quantization of K subband for broadband MU-SINR and MU-CQI Obtain.
In one example, first kind measurement and Second Type measurement trigger simultaneously, described in step 206 Obtain the second measurement feedback includes to base station：Generated according to the signal power and the jamming power Multi-user CQI, and after the first CQI in the first measurement result is revised as into the multi-user CQI, hair The base station is given, so as to reduce the expense of whole measurement feedback.That is, in this example, measurement is anti- New field need not be increased in feedback, but existing field is used to carry the multi-user CQI.One In individual example, the first CQI and multi-user CQI also can be fed back to the base by the user terminal simultaneously Stand.
In one example, the second measurement feedback is obtained described in step 206 includes to base station：According to The signal power and jamming power generation multi-user CQI, and determine the first CQI and described multi-purpose The first offset between the CQI of family, then the first CQI and first offset be sent to described Base station.Assuming that the first CQI is 7, the multi-user CQI is 15, it is determined that it is inclined to go out described first Shifting amount is 8.In one example, the first CQI is that first kind measurement obtains, the first kind Type measurement can measure with Second Type to be carried out or is sent out before Second Type measurement simultaneously It is raw.
In one example, the second measurement feedback is obtained described in step 206 includes to base station：According to The signal power and jamming power generation multi-user CQI, obtain modulation and compile from the 2nd DCI Code tactful (MCS) instruction, determine that second between the MCS instructions and the multi-user CQI is inclined Shifting amount, then MCS instructions are sent to the base station with second offset.In an example In, the MCS is designated as 11, and multi-user CQI is 13, then the second offset is 2.
As shown in Figure 3, it is assumed that UE1 measures CSI-RS letters on conventional CSI-RS ports during subframe 1-5 Number, in subframe 7, UE1 provides corresponding CSI-RS feedbacks.As can be seen that in subframe 2, UE2, UE3, UE4, UE5 are scheduled in downlink.In subframe 4, UE4, UE5, UE6, UE7 exist Downlink is scheduled.In subframe 11, UE1, UE3, UE5, UE7 are scheduled in downlink, Now UE1 is measured in DMRS port.In subframe 14, UE1 is by DMRS port Two measurement feedbacks are to base station.In subframe 16, UE1, UE3, UE5, UE7 are in downlink quilt Scheduling.Now, UE1 can preferably instruct the user of subframe 16 to dispatch in the feedback that subframe 14 provides.
Fig. 4 is the schematic flow sheet of the method 400 of channel-quality feedback in the embodiment of the present invention.At one In example, this method 400 includes following operation.
In step 401, user terminal carries out channel quality measurement in the first reference signal port, obtains the One measurement feedback is to base station.
In step 402, whether the trigger condition of user terminal detection Second Type measurement meets.
In step 403, when the trigger condition is met, the DMRS of the user terminal is being distributed to Channel estimation is carried out on port, obtains the signal power of the user terminal.
In step 404, in the DMRS that the other users terminal distribution with the user terminal combined dispatching arrives Channel estimation is carried out on port respectively and obtains jamming power.
In one example, the user terminal is UE1, and the user terminal on this multi-subscriber dispatching includes： UE1, UE3, UE5, UE7, then UE1 will in UE3, UE5, UE7 DMRS port Channel estimation is carried out, obtains UE3, UE5, UE7 actual MUI to caused by UE1.In an example In, the number of plies of the data transfer layer on this multi-subscriber dispatching is notified the user by base station by the 2nd DCI Terminal so that the user terminal is informed in when determining jamming power, it is necessary in how many individual DMRS ports Perform channel estimation.
In step 405, the user terminal obtains the second survey using the signal power and the jamming power Result is measured, is sent to the base station.
Fig. 5 is the schematic flow sheet of the method 500 of channel-quality feedback in the embodiment of the present invention.At one In example, this method 500 includes following operation.
In step 501, user terminal carries out channel quality measurement in the first reference signal port, obtains the One measurement feedback is to base station.
In step 502, zero energy (zero power, ZP) of the base station in the user terminal is received The data-signal with user terminal combined dispatching other users terminal that is being sent on CSI-RS ports.
Specifically, base station is to the user terminal distribution zero energy CSI-RS ports on this multi-subscriber dispatching RE, RE position of the different user terminals on zero energy CSI-RS ports be different.Base station is at one The data-signal of the user terminal is not transmitted on the RE of the zero energy CSI-RS ports of user terminal, but Transmit the data-signal of the other users terminal of combined dispatching.
In step 503, whether the trigger condition of user terminal detection Second Type measurement meets.
In step 504, when the trigger condition is met, in the DMRS port of the user terminal Channel estimation is carried out, obtains the signal power of the user terminal.
In step 505, the user terminal is distributed on the RE of itself in the ZP CSI-RS ports and measured Jamming power, so as to obtain actual MUI.
It may be noted that unlike the user terminal, the other users terminal of combined dispatching will connect on the RE The signal received regards data-signal as.That is, in multi-subscriber dispatching, each user terminal is distributed in base station ZP CSI-RS ports on RE be all it is different, user terminal in ZP CSI-RS ports itself The measurement of jamming power is carried out on RE.In addition, the user terminal is whole by other users in ZP CSI-RS ports The signal sent on the RE at end is considered as data channel and demodulates the data-signal that is transmitted on these RE.
In step 506, the user terminal obtains the second survey using the signal power and the jamming power Result is measured, is sent to the base station.
Fig. 6 is the schematic flow sheet of the method 600 of channel-quality feedback in the embodiment of the present invention.At one In example, this method 600 includes following operation.
In step 601, user terminal carries out channel quality measurement in the first reference signal port, obtains the One measurement feedback is to base station.
In step 602, the base station selects one from the special CSI-RS ports of one group of user pre-set Individual or multiple special CSI-RS ports of first user, by the first Downlink Control Information (DCI) by described in The special CSI-RS ports of first user are indicated to the user terminal.Correspondingly, the user terminal receives institute State the first DCI of the configured information for carrying the special CSI-RS ports of the first user.
In one example, base station can select first user from the special CSI-RS ports of user Special CSI-RS ports, or select the special CSI-RS ports of two the first users.In one example, The configured information of the special CSI-RS ports of first user is carried in up-link license (UL grant) In.It may be noted that the special CSI-RS of this group of user can be appointed between base station and user terminal in advance Port, or the special CSI-RS ports of the user pre-set are notified by this by top signaling by base station User terminal.
In step 603, whether the trigger condition of user terminal detection Second Type measurement meets.
In step 604, when the trigger condition is met, at the special CSI-RS ends of first user The signal power of the user terminal is measured on mouth.
In step 605, the general power of all RE on the special CSI-RS ports of one group of user is calculated.
In step 606, jamming power is obtained according to the general power and the signal power.As can be seen that What is calculated due to user terminal is general power on the special CSI-RS ports of all users, therefore step 606 The actual MUI in this cell is included in obtained jamming power.
In step 607, the user terminal obtains the second survey using the signal power and the jamming power Result is measured, is sent to the base station.
Fig. 7 is the schematic flow sheet of the method 700 of channel-quality feedback in the embodiment of the present invention.At one In example, this method 700 includes following operation.
In step 701, user terminal carries out channel quality measurement in the first reference signal port, obtains the One measurement feedback is to base station.
In step 702, the base station selected from the special CSI-RS ports of user pre-set one or Multiple special CSI-RS ports of first user, by the first DCI by the special CSI-RS of the first user Port is indicated to the user terminal.Correspondingly, it is special to receive carrying first user for the user terminal The first DCI of the configured information of CSI-RS ports.
In step 703, whether the trigger condition of user terminal detection Second Type measurement meets.
In step 704, when the trigger condition is met, at the special CSI-RS ends of first user The signal power of the user terminal is measured on mouth.
In step 705, carry out channel estimation in the special CSI-RS ports of second user and obtain jamming power.
In one example, the special CSI-RS ports of the second user are the user pre-set Removed in special CSI-RS ports outside the special CSI-RS ports of first user it is one or more its The special CSI-RS ports of his user.For example the special CSI-RS ports of user pre-set have 8, The special CSI-RS ports of first user have 2, then the special CSI-RS ports of second user can have up to 6.In one example, base station can be by the 2nd DCI by the special CSI-RS of the user of actual use The number of port notifies the user terminal so that the user terminal be informed in determine jamming power when, it is necessary to Channel estimation is performed on how many individual special CSI-RS ports of second user.In one example, the reality The number for the special CSI-RS ports of user that border uses can be less than the special CSI-RS of user pre-set The number of port.For example the special CSI-RS ports of second user have 2, then the actual use The special CSI-RS ports of user number be 4.
In step 706, the user terminal obtains the second survey using the signal power and the jamming power Result is measured, is sent to the base station.
Fig. 8 is the schematic flow sheet of the method 800 of channel-quality feedback in the embodiment of the present invention.At one In example, this method 800 includes following operation.
In step 801, user terminal carries out channel quality measurement in the first reference signal port, obtains the One measurement feedback is to base station.
In step 802, the user terminal selects one from the special CSI-RS ports of user pre-set Or multiple special CSI-RS ports of first user.
Further, the special CSI-RS ports of first user can be notified the base by the user terminal Stand.Unlike step 702, due in step 802 the special CSI-RS ports of first user be by User terminal selecting, base station need not increase the special CSI-RS ports of the first user in UL grant Configured information.
In step 803, whether the trigger condition of user terminal detection Second Type measurement meets.
In step 804, when the trigger condition is met, at the special CSI-RS ends of first user The signal power of the user terminal is measured on mouth.
In step 805, all RE on the special CSI-RS ports of the user pre-set are calculated General power.
In step 806, jamming power is obtained according to the general power and the signal power.
In step 807, the user terminal obtains the second survey using the signal power and the jamming power Result is measured, is sent to the base station.
Fig. 9 is the schematic flow sheet of the method 900 of channel-quality feedback in the embodiment of the present invention.At one In example, this method 900 includes following operation.
In step 901, user terminal carries out channel quality measurement in the first reference signal port, obtains the One measurement feedback is to base station.
In step 902, the user terminal is selected from the special CSI-RS ports of one group of user pre-set One or more special CSI-RS ports of first user, and by the special CSI-RS ports of first user Notify the base station.
In step 903, whether the trigger condition of user terminal detection Second Type measurement meets.
In step 904, when the trigger condition is met, at the special CSI-RS ends of first user The signal power of the user terminal is measured on mouth.
In step 905, carry out channel estimation in the special CSI-RS ports of second user and obtain jamming power. In one example, the special CSI-RS ports of the second user are special for the user pre-set Other one or more use outside the special CSI-RS ports of first user are removed in CSI-RS ports The special CSI-RS ports in family.
In step 906, the user terminal obtains the second survey using the signal power and the jamming power Result is measured, is sent to the base station.
Figure 10 is the schematic flow sheet of the method 1000 of channel-quality feedback in the embodiment of the present invention.One In individual example, this method 1000 includes following operation.
In step 1001, user terminal carries out channel quality measurement in the first reference signal port, obtains the One measurement feedback is to base station.
In step 1002, the user terminal reads in the special high-level signaling of user or the first DCI and carried Multi-user's CQI information position.
In one example, the special high-level signaling of the user is wireless heterogeneous networks (Radio Resource Control, RRC) signaling, increase multi-user's CQI parameter, the multi-user CQI in the RRC signaling The value of parameter is to open (ON) or close (OFF).
In one example, the first DCI is PUSCH feedback informations, using DCI 4 form. In one example, a bit can be increased in the DCI 4, as multi-user's CQI information position. In one example, 3 bits can also further be increased in the DCI 4, for indicating that multi-user adjusts The number of plies of the data transfer layer of degree.
In step 1003, Second Type measurement is judged whether to according to multi-user's CQI information position. In one example, when the value of multi-user's CQI information position is 1, demonstrate the need for carrying out described second Categorical measures simultaneously feed back multi-user CQI.
In step 1004, when it is determined that carrying out the Second Type measurement, the user terminal detects whether Receive the data-signal of itself.
In step 1005, if receiving the data-signal, the user terminal is at the second reference signal end Mouth carries out channel quality measurement during multi-subscriber dispatching, obtains the second measurement feedback to the base station.
In one example, the second reference signal port can be DMRS port or use The special CSI-RS ports in family.It may be noted that the operation of step 1005 refers to Fig. 2-9 description.
In Figure 11, in subframe 11, base station sends the first DCI, the 2nd DCI and PDSCH to UE1 Data-signal, the first DCI carry multi-user's CQI information position, the UE1 feedbacks first in subframe 14 CQI and the first offset.Wherein, the first DCI and the 2nd DCI can take identical time resource.Need It is to be noted, that subframe 1-10 situation refers to shown in Fig. 3, be not shown in fig. 11.
In Figure 12, in subframe 10, base station sends the first DCI to UE1, and the first DCI carries more User's CQI information position, in subframe 11, base station sends the 2nd DCI and PDSCH data letter to UE1 Number.Because in subframe 11, UE1 receives the data-signal of itself, therefore it is triggered at DMRS ends Mouth measures.In subframe 14, UE1 measured according to Second Type to the CQI of base station feedback the first and First offset.It may be noted that subframe 1-9 situation is referred to shown in Fig. 3, in fig. 12 without again Row is shown.
Figure 13 is the schematic flow sheet of the method 1300 of channel-quality feedback in the embodiment of the present invention.One In individual example, this method 1300 includes following operation.
In step 1301, user terminal carries out channel quality measurement in the first reference signal port, obtains the One measurement feedback is to base station.
In step 1302, the base station sends the 3rd DCI, for indicating Physical Uplink Shared Channel (PUSCH) feedback information and Physical Downlink Shared Channel (PDSCH) transmission information.In an example In, the 3rd DCI is a kind of newly-designed DCI, for simultaneous transmission PUSCH feedback informations and PDSCH transmission information so that user terminal only needs to carry out a DCI parsing, up with regard to that can obtain With descending two category information.In one example, the 3rd DCI is by DCI 4 and DCI 2C/2D Same field merges, so as to reduce DCI expenses.
In step 1303, the user terminal reads the multi-user CQI letters carried in the 3rd DCI Cease position.
In step 1304, when when multi-user's CQI information position, instruction needs to carry out Second Type measurement, The user terminal detects whether to receive the data-signal of itself.
In step 1305, if receiving the data-signal, the user terminal is at the second reference signal end Mouth carries out channel quality measurement during multi-subscriber dispatching, obtains the second measurement feedback to base station.
In one example, user terminal described in step 1004 or step 1304 detect whether to receive from The data-signal of body includes：When the user terminal receives multi-user's CQI information position in subframe n When, determine whether the user terminal in subframe (n-k1) receives the number between subframe (n+k2) It is believed that number, determining that the trigger condition is satisfied if receiving, wherein k1 is more than or equal to (- k2), The k2 is more than or equal to 0.Wherein, the user terminal is surveyed in subframe (n+k3) feedback described second Result is measured, wherein k3 is more than k2.In one example, k3-k2>2, namely need whole to the user The end reserved time not less than 2 subframes carries out data parsing.
Figure 14 is the schematic flow sheet of the method 1400 of channel-quality feedback in the embodiment of the present invention.One In individual example, this method 1400 includes following operation.
In step 1401, user terminal carries out channel quality measurement in the first reference signal port, obtains the One measurement feedback is to base station.
In step 1402, the user terminal judges whether to receive the 2nd DCI.Wherein, described second DCI is used to indicate that Physical Downlink Shared Channel (PDSCH) transmits information.
In step 1403, when receiving two DCI, judge to whether there is in measurement window CSI-RS feeds back opportunity.In an example it is assumed that the subframe for receiving the 2nd DCI is subframe n, Then the measurement window is between (n-k1) and (n+k2), sustainable one or more subframes, wherein K1 and k2 is all higher than or equal to 0.
In step 1404, fed back opportunity if there is the CSI-RS, the user terminal is in the second ginseng Channel quality measurement when signal port carries out multi-subscriber dispatching is examined, the second measurement result is obtained and reports base Stand.In one example, when the second reference signal port is DMRS port, described second surveys Result is measured to feed back for DMRS.DMRS feedbacks may include subband MU-CQI, can also further comprise Broadband MU-CQI, and/or, the field defined in pattern 3-0 or pattern 3-1 or pattern 3-2.
In one example, the subband MU-CQI is calculated as follows：Determine the user terminal in every height The signal power taken, and estimate the jamming power of the user terminal on each subband, according to each subband The ratio of the upper signal power and the jamming power determines the multi-user SINR on the subband, and root The multi-user CQI on the subband is obtained according to the multi-user SINR.
In one example, the broadband MU-CQI is calculated as follows：According to the money received from base station When source distribution type determines to need to calculate the broadband multiuser CQI of the user terminal, by all subbands Multi-user SINR quantifies after being averaged, and obtains broadband multiuser CQI.
Trigger condition described in step 102 is can be seen that from Figure 14 description to be scheduled for the user terminal And the user terminal possesses the chance for carrying out CSI-RS feedbacks in measurement window.In one example, The user terminal is configured as periodically carrying out CSI-RS feedbacks.
Figure 15 is the schematic flow sheet of the control method 1500 of channel quality measurement in the embodiment of the present invention. In one example, this method 1500 includes following operation.
In step 1501, base station notifies user terminal UE at the first reference signal end by conventional configuration information Mouth carries out channel quality measurement, and receives the first measurement result of user terminal feedback.In one example, The base station can carry out multi-subscriber dispatching according to first measurement result.
In step 1502, the base station is when the user terminal is scheduled, by the triggering bar of Second Type measurement Part is arranged to open, when carrying out multi-subscriber dispatching in the second reference signal port so as to trigger the user terminal Channel quality measurement and feed back the second measurement result.
In one example, the trigger condition that Second Type measures is arranged into opening described in step 1502 includes： The base station increases multi-user's CQI information position in the special high-level signaling of user or the first DCI, and should After multi-user's CQI information position is arranged to opening, the user terminal is sent to, for triggering the user terminal Carry out the Second Type measurement.Wherein, the first DCI is used to indicate Physical Uplink Shared Channel PUSCH Feedback information.
In one example, the trigger condition that Second Type measures is arranged into opening described in step 1502 includes： The base station is configured to indicate Physical Uplink Shared Channel PUSCH feedback informations and the shared letter of physical down 3rd DCI of road PDSCH transmission information, and multi-user's CQI information position of the 3rd DCI is set After opening, the user terminal is sent to, the Second Type measurement is carried out for triggering the user terminal.
Figure 16 is the schematic flow sheet of the control method 1600 of channel quality measurement in the embodiment of the present invention. In one example, this method 1600 includes following operation.
In step 1601, base station notifies user terminal UE at the first reference signal end by conventional configuration information Mouth carries out channel quality measurement, and receives the first measurement result of user terminal feedback.Now, base station is opened Dynamic is first kind measurement.
In step 1602, the base station is when the user terminal is scheduled, by the triggering bar of Second Type measurement Part is arranged to open, when carrying out multi-subscriber dispatching in the second reference signal port so as to trigger the user terminal Channel quality measurement and feed back the second measurement result.
In step 1603, the base station determines to distribute to what the user terminal used in zero energy CSI-RS ports RE, the data-signal with the other users terminal of the user terminal combined dispatching is sent on the RE so that The user terminal measures jamming power on the RE for distributing to itself, and to join with the user terminal The other users terminal for closing scheduling receives data-signal on the RE.
Figure 17 is the schematic flow sheet of the control method 1700 of channel quality measurement in the embodiment of the present invention. In one example, this method 1700 includes following operation.
In step 1701, base station notifies user terminal UE at the first reference signal end by conventional configuration information Mouth carries out channel quality measurement, and receives the first measurement result of user terminal feedback.
In step 1702, the base station is when the user terminal is scheduled, by the triggering bar of Second Type measurement Part is arranged to open.
In step 1703, the base station marks off one group of special CSI-RS of user in advance from CSI-RS ports It is more in the second reference signal port progress to trigger the user terminal as the second reference signal port in port Channel quality measurement when user dispatches.In one example, after the user terminal is triggered, calculate All RE general power on the special CSI-RS ports of user.
In step 1704, the base station is selected one or more first from the special CSI-RS ports of the user and used The special CSI-RS ports in family, by the first Downlink Control Information DCI by the special CSI-RS of the first user Port is indicated to the user terminal, for the user terminal in the special CSI-RS ports of first user Measured signal power.Wherein, the first DCI is used to indicate that Physical Uplink Shared Channel PUSCH feeds back Information.
Figure 18 is the schematic flow sheet of the control method 1800 of channel quality measurement in the embodiment of the present invention. In one example, this method 1800 includes following operation.
In step 1801, base station notifies user terminal UE at the first reference signal end by conventional configuration information Mouth carries out channel quality measurement, and receives the first measurement result of user terminal feedback.In one example, The base station can carry out multi-subscriber dispatching according to first measurement result.
In step 1802, the base station is when the user terminal is scheduled, by the triggering bar of Second Type measurement Part is arranged to open, when carrying out multi-subscriber dispatching in the second reference signal port so as to trigger the user terminal Channel quality measurement and feed back the second measurement result.
In step 1803, the base station receives second measurement result that the user terminal is sent, therefrom The first CQI and the first offset are obtained, and is restored according to the first CQI and first offset more User CQI.
Figure 19 is the schematic flow sheet of the control method 1900 of channel quality measurement in the embodiment of the present invention. In one example, this method 1900 includes following operation.
In step 1901, base station notifies user terminal UE at the first reference signal end by conventional configuration information Mouth carries out channel quality measurement, and receives the first measurement result of user terminal feedback.In one example, The base station can carry out multi-subscriber dispatching according to first measurement result.
In step 1902, the base station is when the user terminal is scheduled, by the triggering bar of Second Type measurement Part is arranged to open, when carrying out multi-subscriber dispatching in the second reference signal port so as to trigger the user terminal Channel quality measurement and feed back the second measurement result.
In step 1903, the base station receives second measurement result that the user terminal is sent, therefrom MCS instructions and the second offset are obtained, and is restored according to MCS instructions and second offset Multi-user CQI.
Figure 20 is the structural representation of user terminal 2000 in the embodiment of the present invention.In one example, should User terminal 2000 includes：Processor 2001, non-volatile machine readable storage medium storing program for executing 2002；And deposit Store up the program module performed in the non-volatile machine readable storage medium storing program for executing 2002, by the processor 2001 2003。
In one example, described program module 2003 is used for：Channel matter is carried out in the first reference signal port Measurement, the first measurement feedback is obtained to base station；Whether the trigger condition for detecting Second Type measurement is full Foot, when the trigger condition is met, the channel when the second reference signal port carries out multi-subscriber dispatching Mass measurement, the second measurement feedback is obtained to base station.
In one example, described program module 2003 includes：First measurement module 2013 and the second measurement Module 2023.Wherein, first measurement module 2013 is used to carry out channel matter in the first reference signal port Measurement, the first measurement feedback is obtained to base station.Second measurement module 2023 is used to detect second Whether the trigger condition of categorical measures meets, when the trigger condition is met, at the second reference signal end Mouth carries out channel quality measurement during multi-subscriber dispatching, obtains the second measurement feedback to base station.
In one example, described program module 2003 is used for：Calculate that the multi-subscriber dispatching uses is all Resource element RE general power in DMRS port；It is enterprising in the DMRS port for distributing to the user terminal Row channel estimation, obtain the signal power of the user terminal；And according to the general power and the signal Power obtains jamming power.
In one example, described program module 2003 is used for：Distributing to the DMRS of the user terminal Channel estimation is carried out on port, obtains the signal power of the user terminal；And combine with the user terminal The other users terminal distribution of scheduling to DMRS port on carry out channel estimation respectively and obtain jamming power.
In one example, described program module 2003 is used for：The base station is received in zero energy CSI-RS Distributed in port being sent on the RE of the user terminal whole with user terminal combined dispatching other users The data-signal at end；Channel estimation is carried out in the DMRS port for distributing to the user terminal, obtains the use The signal power of family terminal；And the user terminal is distributed to itself in the zero energy CSI-RS ports and made Jamming power is measured on RE.
In one example, described program module 2003 is used for：Receive the base station and pass through the first descending control The configured information for the special CSI-RS ports of the user of one or more first that information DCI is provided, described first uses Selected by the base station from the special CSI-RS ports of the user pre-set the special CSI-RS ports in family； Wherein, the first DCI is used to indicate Physical Uplink Shared Channel PUSCH feedback informations；Described The signal power of the user terminal is measured on the special CSI-RS ports of one user；Calculating is pre-set described The special CSI-RS ports of user on all RE general power, and according to the general power and the signal power Obtain jamming power.
In one example, described program module 2003 is used for：Receive the base station and pass through the first descending control The configured information for the special CSI-RS ports of the user of one or more first that information DCI is provided, described first uses Selected by the base station from the special CSI-RS ports of the user pre-set the special CSI-RS ports in family； Wherein, the first DCI is used to indicate Physical Uplink Shared Channel PUSCH feedback informations；Described The signal power of the user terminal is measured on the special CSI-RS ports of one user；It is special in second user CSI-RS ports carry out channel estimation and obtain the jamming power, the special CSI-RS ports of second user To remove the special CSI-RS ports of first user in the special CSI-RS ports of the user pre-set Outside the special CSI-RS ports of one or more other users.
In one example, described program module 2003 is used for：It is special from the user pre-set One or more special CSI-RS ports of first user are selected in CSI-RS ports, and in first user The signal power of the user terminal is measured on special CSI-RS ports；The user pre-set described in calculating is special With the general power of all RE on CSI-RS ports, and disturbed according to the general power and the signal power Power.
In one example, described program module 2003 is used for：It is special from the user pre-set One or more special CSI-RS ports of first user are selected in CSI-RS ports, and in first user The signal power of the user terminal is measured on special CSI-RS ports；At the special CSI-RS ends of second user Mouth carries out channel estimation and obtains the jamming power, and the special CSI-RS ports of second user are described advance One outside the special CSI-RS ports of first user is removed in the special CSI-RS ports of user of setting Or multiple special CSI-RS ports of other users.
In one example, described program module 2003 is used for：According to the signal power and the interference work( Rate generation multi-user channel quality instruction CQI；The multi-user CQI is added to second measurement result In be sent to the base station；Or the first CQI in first measurement result is revised as described multi-purpose After the CQI of family, the base station is sent to.
In one example, described program module 2003 is used for：According to the signal power and the interference work( Rate generation multi-user CQI；The first offset between the first CQI and the multi-user CQI is determined, and will First CQI and first offset are sent to the base station.
In one example, described program module 2003 is used for：According to the signal power and the interference work( Rate generation multi-user CQI；Obtain modulation from the 2nd DCI to indicate with coding strategy MCS, it is determined that described MCS indicates the second offset between the multi-user CQI；Wherein, the 2nd DCI is used to indicate Physical Downlink Shared Channel PDSCH transmission information；MCS instructions and second offset are sent To the base station.
In one example, described program module 2003 is used for：Read the special high-level signaling of user or first The multi-user's CQI information position carried in DCI；Wherein, the first DCI is used to indicate that physical uplink is shared Channel PUSCH feedback informations；When multi-user's CQI information position, instruction needs to carry out multi-user's CQI surveys During amount, detect whether to receive the data-signal of itself；If receive, it is determined that the trigger condition is expired Foot.
In one example, described program module 2003 is used for：The 3rd DCI that the base station is sent is received, 3rd DCI is used to indicate Physical Uplink Shared Channel PUSCH feedback informations and Physical Downlink Shared Channel PDSCH transmission information；Read the multi-user's CQI information position carried in the 3rd DCI；When described multi-purpose When the instruction of family CQI information position needs to carry out multi-user CQI measurements, detect whether to receive the data letter of itself Number；If receive, it is determined that the trigger condition is satisfied.
In one example, described program module 2003 is used for：When receiving the multi-user CQI in subframe n During information bit, judge whether the user terminal is described to being received between subframe (n+k2) in subframe (n-k1) Data-signal, determine that the trigger condition is satisfied if receiving；Wherein, the k1 is more than or equal to 0, The k2 is more than or equal to 0；Wherein, the user terminal is in subframe (n+k3) feedback the second measurement knot Fruit, wherein k3 are more than k2.
In one example, described program module 2003 is used for：When receiving two DCI, judge surveying Window is measured with the presence or absence of CSI-RS feedback opportunitys；Wherein, the 2nd DCI is used to indicate that physical down is shared Channel PDSCH transmission information；Opportunity is fed back if there is the CSI-RS, it is determined that the trigger condition quilt Meet.
Figure 21 is the structural representation of base station 2100 in the embodiment of the present invention.In one example, the base station 2100 include：Processor 2101, non-volatile machine readable storage medium storing program for executing 2102；And be stored in this it is non-easily In the property lost machinable medium 2102, the program module 2103 that is performed by the processor 2101.
In one example, described program module 2103 is used for：User terminal is notified by conventional configuration information UE carries out channel quality measurement in the first reference signal port, and receives the first measurement of user terminal feedback As a result；Multi-subscriber dispatching is carried out according to first measurement result, and when the user terminal is scheduled, will The trigger condition of Second Type measurement is arranged to open, so as to trigger the user terminal in the second reference signal Channel quality measurement and the second measurement result of feedback during the progress multi-subscriber dispatching of port.
In one example, described program module 2103 is used for：In the special high-level signaling of user or first Increase multi-user's CQI information position in DCI, and after multi-user's CQI information position is arranged into opening, send To the user terminal, the Second Type measurement is carried out for triggering the user terminal.Wherein, described One DCI is used to indicate Physical Uplink Shared Channel PUSCH feedback informations.
In one example, described program module 2103 is used for：It is configured to indicate Physical Uplink Shared Channel 3rd DCI of PUSCH feedback informations and Physical Downlink Shared Channel PDSCH transmission information；By described After three DCI multi-user's CQI information position is arranged to opening, the user terminal is sent to, for triggering this User terminal carries out the Second Type measurement.
In one example, described program module 2103 is used for：Distributed in zero energy CSI-RS ports Send on the RE that the user terminal uses and believe with the data of the other users terminal of the user terminal combined dispatching Number so that the user terminal measures jamming power on the RE for distributing to itself, and causes and the use The other users terminal of family terminal joint scheduling receives data-signal on the RE.
In one example, described program module 2103 is used for：One is marked off in advance from CSI-RS ports The group special CSI-RS ports of user calculate as the second reference signal port for the user terminal All RE general power on the special CSI-RS ports of user；From the special CSI-RS ports of the user In select one or more special CSI-RS ports of first user, by the first Downlink Control Information DCI by institute State the special CSI-RS ports of the first user and be indicated to the user terminal, for the user terminal described first Measured signal power on the special CSI-RS ports of user.Wherein, the first DCI is used to indicate physical uplink Shared channel PUSCH feedback informations.
In one example, described program module 2103 is used for：Receive the user terminal is sent described Two measurement results, therefrom obtain the first CQI and the first offset, and according to the first CQI and described the One offset restores multi-user CQI.
In one example, described program module 2103 is used for：Receive the user terminal is sent described Two measurement results, therefrom obtain MCS instruction and the second offset, and according to the MCS instruction and it is described Second offset restores multi-user CQI.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all at this Within the spirit and principle of invention, any modification, equivalent substitution and improvements done etc., it should be included in Within the scope of protection of the invention.

Claims (30)

  1. A kind of 1. channel quality feedback method, it is characterised in that including：
    User terminal UE carries out channel quality measurement in the first reference signal port, and it is anti-to obtain the first measurement result Feed base station；
    Whether the trigger condition of detection Second Type measurement meets, described when the trigger condition is met Channel quality measurement of the user terminal when the second reference signal port carries out multi-subscriber dispatching, obtains the second survey Amount result feeds back to base station.
  2. 2. according to the method for claim 1, it is characterised in that the second reference signal port is solution Adjust pilot tone DMRS port, then the user terminal the second reference signal port carry out multi-subscriber dispatching when Channel quality measurement includes：
    Calculate the general power of resource element RE in all DMRS ports that the multi-subscriber dispatching uses；
    Channel estimation is carried out in the DMRS port for distribute to the user terminal, obtains the user terminal Signal power；And
    Jamming power is obtained according to the general power and the signal power.
  3. 3. according to the method for claim 1, it is characterised in that the second reference signal port is DMRS port, then the user terminal the second reference signal port carry out multi-subscriber dispatching when channel matter Measurement includes：
    Channel estimation is carried out in the DMRS port for distributing to the user terminal, obtains the user terminal Signal power；And
    With the other users terminal distribution of the user terminal combined dispatching to DMRS port on carry out respectively Channel estimation obtains jamming power.
  4. 4. according to the method for claim 1, it is characterised in that further comprise：Receive the base station Sent on the RE that zero energy CSI-RS ports use is distributed to the user terminal combined dispatching other The data-signal of user terminal；And
    The second reference signal port is DMRS port, then the user terminal is at the second reference signal end Channel quality measurement when mouth carries out multi-subscriber dispatching includes：
    Channel estimation is carried out in the DMRS port for distributing to the user terminal, obtains the letter of the user terminal Number power；And
    The user terminal measures jamming power on the RE for distributing to zero energy CSI-RS ports and using.
  5. 5. according to the method for claim 1, it is characterised in that the second reference signal port is one The special CSI-RS ports of user that group is pre-set；
    This method further comprises：Receive one that the base station is provided by the first Downlink Control Information DCI Or the configured information of multiple special CSI-RS ports of first user, the special CSI-RS ports of the first user Selected by the base station from the special CSI-RS ports of the user pre-set；Wherein, described first DCI is used to indicate Physical Uplink Shared Channel PUSCH feedback informations；
    Then channel quality of the user terminal when the second reference signal port carries out multi-subscriber dispatching is surveyed Amount includes：
    The signal power of the user terminal is measured on the special CSI-RS ports of first user；
    Calculating all RE on the special CSI-RS ports of the user pre-set general power, and according to The general power and the signal power obtain jamming power；Or enter in the special CSI-RS ports of second user Row channel estimation obtains the jamming power, and the special CSI-RS ports of second user pre-set to be described The special CSI-RS ports of user in remove one or more outside the special CSI-RS ports of first user The individual special CSI-RS ports of other users.
  6. 6. according to the method for claim 1, it is characterised in that the second reference signal port is one The special CSI-RS ports of user that group is pre-set, then the user terminal is in the second reference signal port Channel quality measurement when carrying out multi-subscriber dispatching includes：
    The user terminal selects one or more first from the special CSI-RS ports of the user pre-set The special CSI-RS ports of user, and user's end is measured on the special CSI-RS ports of first user The signal power at end；
    All RE general power on the special CSI-RS ports of user pre-set described in calculating, and according to this General power and the signal power obtain jamming power；Or carried out in the special CSI-RS ports of second user Channel estimation obtains the jamming power, and the special CSI-RS ports of second user are described to be pre-set The one or more outside the special CSI-RS ports of first user is removed in the special CSI-RS ports of user The special CSI-RS ports of other users.
  7. 7. according to the method described in claim any one of 2-6, it is characterised in that described to obtain the second measurement As a result feeding back to base station includes：
    According to the signal power and jamming power generation multi-user channel quality instruction CQI；
    The multi-user CQI is added in second measurement result and is sent to the base station；Or will After the first CQI in first measurement result is revised as the multi-user CQI, the base station is sent to.
  8. 8. according to the method for claim 7, it is characterised in that described according to the signal power and institute Stating jamming power generation multi-user channel quality instruction CQI includes：
    Signal power of the user terminal on each subband is determined, and estimates the user terminal on each subband Jamming power, the subband is determined according to the ratio of the signal power and the jamming power on each subband On multi-user SINR, and the multi-user CQI on the subband is obtained according to the multi-user SINR；
    Determined to need the broadband for calculating the user terminal to use according to the resource allocation type received from base station During the CQI of family, quantify after the multi-user SINR on all subbands is averaged, obtain broadband multiuser CQI.
  9. 9. according to the method described in claim any one of 2-6, it is characterised in that described to obtain the second measurement As a result feeding back to base station includes：
    According to the signal power and jamming power generation multi-user CQI；
    Determine the first skew between the first CQI and the multi-user CQI in first measurement result Amount, and the first CQI and first offset are sent to the base station.
  10. 10. according to the method described in claim any one of 2-6, it is characterised in that described to obtain the second measurement As a result feeding back to base station includes：
    According to the signal power and jamming power generation multi-user CQI；
    Modulation is obtained from the 2nd DCI to indicate with coding strategy MCS, determines MCS instruction and described The second offset between multi-user CQI；Wherein, the 2nd DCI is used to indicate the shared letter of physical down Road PDSCH transmission information；
    MCS instructions and second offset are sent to the base station.
  11. 11. according to the method for claim 1, it is characterised in that the detection Second Type measurement Whether trigger condition, which meets, includes：
    The user terminal reads the multi-user CQI letters carried in the special high-level signaling of user or the first DCI Cease position；Wherein, the first DCI is used to indicate Physical Uplink Shared Channel PUSCH feedback informations；
    When multi-user's CQI information position, instruction needs to carry out multi-user CQI measurements, the user terminal Detect whether to receive the data-signal of itself；
    If receive, it is determined that the trigger condition is satisfied.
  12. 12. according to the method for claim 1, it is characterised in that further comprise：Receive the base The 3rd DCI that station is sent, the 3rd DCI be used for indicate Physical Uplink Shared Channel PUSCH feedback informations and Physical Downlink Shared Channel PDSCH transmission information；
    Whether the trigger condition of the detection Second Type measurement meets to include：
    The user terminal reads the multi-user's CQI information position carried in the 3rd DCI；
    When multi-user's CQI information position, instruction needs to carry out multi-user CQI measurements, the user terminal Detect whether to receive the data-signal of itself；
    If receive, it is determined that the trigger condition is satisfied.
  13. 13. the method according to claim 11 or 12, it is characterised in that the user terminal detection Whether receiving the data-signal of itself includes：
    When the user terminal receives multi-user's CQI information position in subframe n, user end is judged Whether end in subframe (n-k1) receives the data-signal between subframe (n+k2), if receiving Determine that the trigger condition is satisfied；Wherein, the k1 is more than or equal to (- k2), and the k2 is more than or equal to 0；
    Wherein, the user terminal feeds back second measurement result in subframe (n+k3), and wherein k3 is more than k2。
  14. 14. according to the method for claim 1, it is characterised in that the detection Second Type measurement Whether trigger condition, which meets, includes：
    When the user terminal receives two DCI, judge to feed back with the presence or absence of CSI-RS in measurement window Opportunity；Wherein, the 2nd DCI is used to indicate Physical Downlink Shared Channel PDSCH transmission information；
    Opportunity is fed back if there is the CSI-RS, it is determined that the trigger condition is satisfied.
  15. A kind of 15. control method of channel quality measurement, it is characterised in that including：
    Base station notifies user terminal UE to carry out channel matter in the first reference signal port by conventional configuration information Measurement, and receive the first measurement result of user terminal feedback；
    The base station carries out multi-subscriber dispatching according to first measurement result, and is scheduled in the user terminal When, the trigger condition that Second Type measures is arranged to open, so as to trigger the user terminal in the second ginseng Examine channel quality measurement when signal port carries out multi-subscriber dispatching and feed back the second measurement result.
  16. 16. according to the method for claim 15, it is characterised in that the touching Second Type measurement Clockwork spring part, which is arranged to opening, to be included：
    The base station increases multi-user's CQI information position in the special high-level signaling of user or the first DCI, and After multi-user's CQI information position is arranged into opening, the user terminal is sent to, for triggering the user Terminal carries out the Second Type measurement；
    Wherein, the first DCI is used to indicate Physical Uplink Shared Channel PUSCH feedback informations.
  17. 17. according to the method for claim 15, it is characterised in that the touching Second Type measurement Clockwork spring part, which is arranged to opening, to be included：
    The base station is configured to indicate that Physical Uplink Shared Channel PUSCH feedback informations and physical down are total to Enjoy the 3rd DCI of channel PDSCH transmission information, and by multi-user's CQI information position of the 3rd DCI After being arranged to opening, the user terminal is sent to, the Second Type is carried out for triggering the user terminal Measurement.
  18. 18. according to the method for claim 15, it is characterised in that further comprise：The base station exists Distribute to send on the RE that the user terminal uses in zero energy CSI-RS ports and combine tune with the user terminal The data-signal of the other users terminal of degree so that the user terminal is surveyed on the RE for distributing to itself Jamming power is measured, and make it that the other users terminal with the user terminal combined dispatching receives data on the RE Signal.
  19. 19. according to the method for claim 15, it is characterised in that further comprise：
    The base station marks off described in the special CSI-RS ports conduct of one group of user in advance from CSI-RS ports Second reference signal port, calculate for the user terminal and own on the special CSI-RS ports of the user RE general power；
    One or more special CSI-RS ports of first user are selected from the special CSI-RS ports of the user, The special CSI-RS ports of first user are indicated to by user end by the first Downlink Control Information DCI End, for the user terminal on the special CSI-RS ports of first user measured signal power；
    Wherein, the first DCI is used to indicate Physical Uplink Shared Channel PUSCH feedback informations.
  20. 20. according to the method for claim 15, it is characterised in that further comprise：
    The base station receives second measurement result that the user terminal is sent, and therefrom obtains the first CQI With the first offset, and multi-user CQI is restored according to the first CQI and first offset.
  21. 21. according to the method for claim 15, it is characterised in that further comprise：
    The base station receives second measurement result that the user terminal is sent, and therefrom obtains MCS instructions With the second offset, and according to the MCS instruction and second offset restore multi-user CQI.
  22. A kind of 22. user terminal, it is characterised in that including：
    Processor；
    Non-volatile machine readable storage medium storing program for executing；And
    It is stored in the non-volatile machine readable storage medium storing program for executing, by the program module of the computing device；
    Wherein, described program module is used for：
    Channel quality measurement is carried out in the first reference signal port, obtains the first measurement feedback to base station；
    Whether the trigger condition of detection Second Type measurement meets, when the trigger condition is met, the Two reference signal ports carry out multi-subscriber dispatching when channel quality measurement, obtain the second measurement feedback to Base station.
  23. 23. user terminal according to claim 22, it is characterised in that described program module is used for：
    Calculate the general power of resource element RE in all DMRS ports that the multi-subscriber dispatching uses；
    Channel estimation is carried out in the DMRS port for distribute to the user terminal, obtains the user terminal Signal power；And
    Jamming power is obtained according to the general power and the signal power.
  24. 24. user terminal according to claim 22, it is characterised in that described program module is used for：
    Channel estimation is carried out in the DMRS port for distributing to the user terminal, obtains the user terminal Signal power；And
    With the other users terminal distribution of the user terminal combined dispatching to DMRS port on carry out respectively Channel estimation obtains jamming power.
  25. 25. user terminal according to claim 22, it is characterised in that described program module is used for：
    Receive sent on the RE that the user terminal is distributed in the base station in zero energy CSI-RS ports with The data-signal of the other users terminal of the user terminal combined dispatching；
    Channel estimation is carried out in the DMRS port for distributing to the user terminal, obtains the letter of the user terminal Number power；And
    The user terminal is distributed in the zero energy CSI-RS ports measures interference on the RE itself used Power.
  26. 26. user terminal according to claim 22, it is characterised in that described program module is used for：
    It is special to receive the user of one or more first that the base station is provided by the first Downlink Control Information DCI The configured information of CSI-RS ports, the special CSI-RS ports of the first user are by the base station from described pre- Selected in the special CSI-RS ports of user first set；Wherein, the first DCI is used to indicate physical uplink Shared channel PUSCH feedback informations；
    The signal power of the user terminal is measured on the special CSI-RS ports of first user；
    Calculating all RE on the special CSI-RS ports of the user pre-set general power, and according to The general power and the signal power obtain jamming power；Or enter in the special CSI-RS ports of second user Row channel estimation obtains the jamming power, and the special CSI-RS ports of second user pre-set to be described The special CSI-RS ports of user in remove one or more outside the special CSI-RS ports of first user The individual special CSI-RS ports of other users.
  27. 27. user terminal according to claim 22, it is characterised in that described program module is used for：
    It is special that one or more first users are selected from the special CSI-RS ports of the user pre-set CSI-RS ports, and measure on the special CSI-RS ports of first user signal of the user terminal Power；
    All RE general power on the special CSI-RS ports of user pre-set described in calculating, and according to this General power and the signal power obtain jamming power；Or carried out in the special CSI-RS ports of second user Channel estimation obtains the jamming power, and the special CSI-RS ports of second user are described to be pre-set The one or more outside the special CSI-RS ports of first user is removed in the special CSI-RS ports of user The special CSI-RS ports of other users.
  28. A kind of 28. base station, it is characterised in that including：
    Processor；
    Non-volatile machine readable storage medium storing program for executing；And
    It is stored in the non-volatile machine readable storage medium storing program for executing, by the program module of the computing device；
    Wherein, described program module is used for：
    User terminal UE is notified to carry out channel quality survey in the first reference signal port by conventional configuration information Amount, and receive the first measurement result of user terminal feedback；
    Multi-subscriber dispatching is carried out according to first measurement result, and when the user terminal is scheduled, by the The trigger condition of two categorical measures is arranged to open, so as to trigger the user terminal at the second reference signal end Channel quality measurement and the second measurement result of feedback during mouth progress multi-subscriber dispatching.
  29. 29. base station according to claim 28, it is characterised in that described program module is used for：
    Increase multi-user's CQI information position in the special high-level signaling of user or the first DCI, and this is used After family CQI information position is arranged to opening, the user terminal is sent to, is carried out for triggering the user terminal The Second Type measurement；
    Wherein, the first DCI is used to indicate Physical Uplink Shared Channel PUSCH feedback informations.
  30. 30. base station according to claim 28, it is characterised in that described program module is used for：
    It is configured to indicate Physical Uplink Shared Channel PUSCH feedback informations and Physical Downlink Shared Channel 3rd DCI of PDSCH transmission information；
    After multi-user's CQI information position of 3rd DCI is arranged into opening, the user terminal is sent to, The Second Type measurement is carried out for triggering the user terminal.
CN201610318607.3A 2016-05-12 2016-05-12 Channel quality feedback method, user terminal, the control method of channel quality measurement and base station Pending CN107370556A (en)

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PCT/CN2017/081826 WO2017193808A1 (en) 2016-05-12 2017-04-25 Channel quality feedback method, user equipment, control method for channel quality measurement, and base station
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