WO2015032038A1 - 信道测量方法、终端设备及基站 - Google Patents
信道测量方法、终端设备及基站 Download PDFInfo
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- WO2015032038A1 WO2015032038A1 PCT/CN2013/082920 CN2013082920W WO2015032038A1 WO 2015032038 A1 WO2015032038 A1 WO 2015032038A1 CN 2013082920 W CN2013082920 W CN 2013082920W WO 2015032038 A1 WO2015032038 A1 WO 2015032038A1
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- pmi
- cqi
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- 238000000691 measurement method Methods 0.000 title claims abstract description 15
- 238000005259 measurement Methods 0.000 claims abstract description 835
- 230000011664 signaling Effects 0.000 claims abstract description 140
- 238000000034 method Methods 0.000 claims description 263
- 239000011159 matrix material Substances 0.000 claims description 262
- 230000008569 process Effects 0.000 claims description 159
- 230000009977 dual effect Effects 0.000 claims description 58
- 230000005540 biological transmission Effects 0.000 claims description 38
- 230000007774 longterm Effects 0.000 claims description 21
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 229920006934 PMI Polymers 0.000 description 60
- 238000010586 diagram Methods 0.000 description 20
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 description 4
- 108091022912 Mannose-6-Phosphate Isomerase Proteins 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000010295 mobile communication Methods 0.000 description 2
- 101000577065 Arabidopsis thaliana Mannose-6-phosphate isomerase 2 Proteins 0.000 description 1
- QLBALZYOTXGTDQ-VFFCLECNSA-N PGI2-EA Chemical compound O1\C(=C/CCCC(=O)NCCO)C[C@@H]2[C@@H](/C=C/[C@@H](O)CCCCC)[C@H](O)C[C@@H]21 QLBALZYOTXGTDQ-VFFCLECNSA-N 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
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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]
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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
- H04B7/0636—Feedback format
- H04B7/0645—Variable feedback
- H04B7/065—Variable contents, e.g. long-term or short-short
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- 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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- 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
- H04L1/0028—Formatting
- H04L1/0031—Multiple signaling transmission
Definitions
- the present invention relates to the field of mobile communications technologies, and in particular, to a channel measurement method, a terminal device, and a base station. Background technique
- the base station transmitter beam is mostly adjusted in the horizontal dimension, and the vertical dimension is a fixed downtilt angle for each terminal. Therefore, various beamforming and precoding techniques are based on horizontal dimension channel information. of. Since the channel is three-dimensional (3D), the method of fixing the downtilt angle often does not optimize the throughput of the system. Therefore, beam adjustment in the vertical dimension is important for system performance improvement.
- the technical idea is mainly: According to the estimated 3D channel information of the terminal, the 3D beam shaping weight of the active antenna end is adjusted, so that the main lobe of the beam "aligns" the target terminal in the 3D space, thereby greatly improving the received signal power and improving The signal to noise ratio, which in turn increases the throughput of the entire system.
- the 3D beamforming technology is currently based on an active antenna system (AAS).
- AAS active antenna system
- active antennas provide vertical degrees of freedom, thus increasing system capacity. .
- the measurement mechanism of channel state information is mainly directed to a conventional antenna.
- the measurement mechanism is applied to an AAS antenna, the measurement accuracy is difficult to be satisfied.
- embodiments of the present invention provide a channel measurement method to implement channel state information measurement based on an active antenna system.
- the present invention provides a channel measurement method, including:
- the terminal acquires first channel information, where the first channel information includes one or more of the following information: first channel state information CSI of the first channel, first measurement configuration information used for the first channel measurement;
- the terminal receives the second measurement configuration information that is sent by the base station for the second channel measurement; the terminal performs the second channel measurement according to the first channel information and the second measurement configuration information, to obtain the second CSI.
- the present invention provides a channel measurement method, including:
- the base station acquires a second CSI, where the second CSI is associated with the first channel information, where the first channel information includes one or more of the following information: the first channel state information CSI of the reported first channel, and the configured by the base station First channel state information CSI of one channel, first measurement for first channel measurement Quantity configuration information.
- the present invention provides a terminal device, including:
- a channel information acquiring unit configured to acquire first channel information, where the first channel information includes one or more of the following information: first channel state information CSI of the first channel, first measurement for the first channel measurement Configuration information;
- a configuration information receiving unit configured to receive second measurement configuration information that is sent by the base station and used for the second channel measurement
- a channel measurement unit configured to perform the second channel measurement according to the first channel information and the second measurement configuration information, to obtain a second CSI.
- the present invention provides a base station, including: a second CSI acquiring unit, configured to acquire a second CSI, where the second CSI is associated with the first channel information, where the first channel information includes one of the following information or And a plurality of: the first channel state information CSI of the first channel that is reported, the first channel state information CSI of the first channel configured by the base station, and the first measurement configuration information used for the first channel measurement.
- the CSI-RS pattern of the full antenna and the CSI pattern subset of the partial antenna, and the feedback of the full channel quality information and the partial channel quality information can be combined, thereby saving signaling and improving feedback precision.
- FIG. 1 is a flowchart of a channel measurement method according to an embodiment of the present invention.
- FIG. 2 is a flowchart of another channel measurement method according to an embodiment of the present invention.
- step S230 in FIG. 2 is a specific flowchart of step S230 in FIG. 2;
- FIG. 5 is a schematic diagram of measurement pilots in a channel measurement method according to an embodiment of the present invention
- FIG. 6 is a timing relationship diagram of content reported by a first group of channel information in a method according to an embodiment of the present invention
- FIG. 7 is another timing relationship diagram of content reported by the first group of channel information in the method according to the embodiment of the present invention.
- FIG. 8 is still another timing relationship diagram of the content of the first group of channel information reported in the method according to the embodiment of the present invention.
- FIG. 9 is still another timing relationship diagram of the content of the first group of channel information reported in the method according to the embodiment of the present invention.
- FIG. 10 is still another timing relationship diagram of the content reported by the first group of channel information in the method according to the embodiment of the present invention.
- FIG. 11 is still another timing sequence of reporting content of the first group of channel information in the method according to the embodiment of the present invention. relation chart;
- FIG. 12 is a timing relationship diagram of content reported by a third group of channel information in the method according to an embodiment of the present invention.
- FIG. 13 is another timing diagram of the content of the third group of channel information reported in the method according to the embodiment of the present invention.
- FIG. 14 is still another timing relationship diagram of the third group channel information reporting content in the method according to the embodiment of the present invention.
- 15 is still another timing relationship diagram of the content of the third group of channel information reported in the method according to the embodiment of the present invention.
- 16 is still another timing relationship diagram of the third group channel information reporting content in the method according to the embodiment of the present invention.
- 17 is a timing relationship diagram of a reported content according to an embodiment of the present invention.
- 21 is a timing relationship diagram of still another reported content according to an embodiment of the present invention.
- FIG. 22 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
- FIG. 23 is a schematic structural diagram of a channel measuring unit in the terminal device of FIG. 22;
- FIG. 24 is another schematic structural diagram of a channel measuring unit in the terminal device of FIG. 22;
- FIG. 25 is a channel in the terminal device of FIG.
- FIG. 26 is a schematic structural diagram of another terminal device according to an embodiment of the present invention.
- DETAILED DESCRIPTION the channel measurement and the uplink mechanism for the 2D antenna array and the ASS antenna are: measuring and reporting in the horizontal dimension and the vertical dimension respectively, and then synthesizing the CSI of the antenna array on the base station side, and It is called channel quality information.
- the measurement of the horizontal dimension and the vertical dimension can only reflect part of the antenna array information, so the obtained CSI is not the most comprehensive, there will be loss, and the accuracy is lost.
- the following embodiments correlate channel measurements (e.g., vertical maintenance, horizontal dimensions, etc.) of one or more dimensions with a channel measurement that reflects the full antenna to reduce losses and thereby improve measurement accuracy.
- channel measurements e.g., vertical maintenance, horizontal dimensions, etc.
- FIG. 1 is a flowchart of a channel measurement method according to an embodiment of the present invention.
- the base station configures a second CSI process for the terminal, corresponding to the following second channel measurement, so that the terminal performs the second channel measurement.
- the executor of the method is a terminal, and the method includes the following steps: S110: Acquire first channel information, where the first channel information includes one or more of the following information: CSI, first measurement configuration information for the first channel measurement;
- S120 Receive second measurement configuration information that is sent by the base station and used for the second channel measurement.
- S130 Perform second channel measurement according to the second measurement configuration information and the first channel information, to obtain a second CSI.
- the first CSI is information configured by the base station, or is information that the terminal measures and reports to the base station according to the first measurement configuration information.
- Step S130 specifically includes:
- the first CSI is information configured by the base station, or is information that is measured and reported by the terminal according to the first measurement configuration information.
- the above first channel measurement corresponds to a full antenna for obtaining CSI reflecting a full antenna channel state
- the second channel measurement corresponds to a partial antenna, for example, an antenna of a certain dimension (vertical, horizontal or horizontal, etc.) for obtaining CSI of part of the antenna channel state.
- the terminal when the terminal performs channel measurement (second channel measurement) reflecting part of the antenna, it is associated with the channel measurement reflecting the full antenna, thereby reducing the loss and improving the accuracy of the measurement.
- second channel measurement second channel measurement
- the above and below CSI may include one or more of the following information: rank indication (RI), precoding matrix indicator (PMI), precoding type indicator (PTI), A channel quality indicator (CQI) and an interference indication, an identifier flag that limits the restrictive measurement of the CSI measurement range, and the like.
- Each measurement configuration information includes one or more of the following: channel measurement reference pilot pattern, channel measurement reference pilot port number, channel measurement reference pilot power information, interference measurement reference resource pattern, interference measurement Refer to the resource information.
- the execution body of the method is a terminal, and includes the following steps:
- S220 Receive second measurement configuration information that is sent by the base station and used for the second channel measurement.
- S230 Perform second channel measurement according to the first RI and the second measurement configuration information, to obtain a second RL.
- step S230 may include:
- S231 Determine, according to the first channel information, a range of the second channel measurement, where the range of the second channel measurement is less than or equal to the first RI, and specifically determine the range of the second RI according to the first RI.
- S232 Perform, according to the second measurement configuration information, the second channel measurement in the range of the second channel measurement, to obtain the second RL.
- the base station configures two CSI processes (the second CSI process and the third CSI process) for the terminal, which respectively correspond to the following second channel measurement and third channel measurement, and respectively correspond to Two dimensions of the antenna, such as a horizontal dimension and a vertical dimension, wherein if the second channel measures the corresponding horizontal dimension antenna, the third channel measures the corresponding vertical dimension antenna, and vice versa, that is, the third channel measures the corresponding horizontal dimension antenna,
- the two channel measurement corresponds to a vertical dimension antenna.
- the execution body of the method is a terminal.
- the method further includes the following steps:
- S410 The terminal receives third measurement configuration information used for the third channel measurement.
- the terminal performs the third channel measurement according to at least one of the first channel information and the second channel information, according to the third measurement configuration information, to obtain a third CSI.
- the second channel information includes the second CSI measured by the second channel, or a configuration CSI configured by the base station, specifically configured by a high layer or dynamically configured.
- Step S420 specifically includes:
- a CSI range of the third channel measurement is determined based on at least one of the first channel information and the second channel information. Determining, according to at least one of the first CSI and the second CSI, a CSI range of the third channel measurement; or determining, according to at least one of the first CSI and the configured CSI in the second channel information, the third channel measurement CSI range.
- step S420 in FIG. 4 further includes the following steps:
- S421 Determine, according to at least one of the first RI of the first CSI and the second RI of the second CSI, a range of a third RI of the third CSI; or
- S422 Determine a range of the third RI of the third CSI according to at least one of a first RI of the first CSI and a configuration RI of the configured CSI.
- the value range of the third RI is a fixed mode, or is notified by high-level signaling or dynamic signaling of the base station.
- RI(3) is a function of RI(1) and/or RI(2)
- RI(3) is a function of RI(1) and/or RI(2)
- RI ( 3 ) ⁇ RI ( 1 ), or, RI (3) ⁇ RI (1); or,
- the quotient of RI ( 1 ) and RI ( 2 ) is ⁇ RI ( 3 ) ⁇ RI ( 1 ), or the quotient of RI ( 1 ) and RI ( 2 ) is ⁇ RI (3) ⁇ RI (1), or , quotient of RI (1) and RI (2) is ⁇ 1 ⁇ (3) ⁇ RI ( 1 ), or, quotient of RI ( 1 ) and RI (2) is ⁇ 1 ⁇ (3 ) ⁇ RI ( 1), wherein the rounding is rounding up or rounding down; or
- the quotient of RI ( 1 ) and the RI configured in the second channel information is ⁇ RI (3) ⁇ RI (1), or, RI ( 1 ) and the quotient of the RI configured in the second channel information are ⁇ 1 ⁇ (3) ⁇ RI ( 1 ), or, RI (1) and the quotation of the RI configured in the second channel information ⁇ RI (3) ⁇ RI ( 1 ), or, RI (1) and the second channel information
- the quotient of the configured RI is ⁇ 1 ⁇ (3) ⁇ RI (1), where the rounding is rounded up or rounded down; or
- RI ( 3 ) quotient of RI ( 1 ) and RI ( 2 ), the rounding is rounded up or down; or
- the third CSI may further include a PMI of the third CSI and a CQI of the third CSI
- the foregoing step S420 that is, the terminal performs the third channel measurement, may further include:
- Determining a PMI of the third CSI, where the PMI of the third CSI includes a third PMI or a fourth PMI, and determining the PMI of the third CSI may specifically include:
- RI is the product of the second RI and the third RI, or is min (the first RI, the product of the second RI and the third RI );
- Determining, according to the first channel information, the second channel information, and the third channel information, the fourth PMI, and the number of ports of the fourth PMI is a guide in the first measurement configuration information.
- the number of ports of the frequency, RI is the product of the second RI and the third RI, or is min (the first RI, the product of the second RI and the third RI), min is the minimum value operation .
- the precoding matrix corresponding to the fourth PMI is a Kroneck product of the precoding matrix corresponding to the second PMI and the precoding matrix corresponding to the third PMI; or the precoding matrix corresponding to the fourth PMI is corresponding to the second PMI.
- X is configured by the base station to the terminal through high layer signaling or dynamic signaling.
- the X column may be a continuous or non-contiguous column, and X is min (the first RI, the product of the second RI and the third RI).
- the CQI of the third CSI includes a third CQI and a fourth CQI
- the terminal performing the third channel measurement further includes: determining a third CQI according to the third PMI, or determining the fourth CQI according to the fourth PMI.
- the first channel measurement reference pilot pattern of the first measurement configuration information, the second channel measurement reference pilot pattern of the second measurement configuration information, and the third channel measurement reference of the third measurement configuration information The pilot pattern satisfies:
- the pattern of the second channel measurement reference pilot is a subset of the pattern of the first channel measurement reference pilot
- the pattern of the third channel measurement reference pilot is a subset of the pattern of the first channel measurement reference pilot.
- the port of the first channel measurement reference pilot of the first measurement configuration information, the port of the second channel measurement reference pilot of the second measurement configuration information, and the port of the third channel measurement reference pilot of the third measurement configuration information satisfy :
- the number of ports of the first channel measurement reference pilot is a product of the number of ports of the second channel measurement reference pilot and the number of ports of the third channel measurement reference pilot.
- the number of ports of the second channel measurement reference pilot is greater than or equal to the number of ports of the third channel measurement reference pilot.
- the rank in the second channel information is greater than or equal to the rank in the third channel information.
- the transmission period of the reference pilot measured by the first channel is an integer multiple of a transmission period of the reference pilot of the channel measurement, and the transmission period of the reference pilot measured by the first channel is the third channel measurement
- the reference pilot is transmitted at an integer multiple of the period.
- the first CSI when the first channel measurement information includes the first CSI, the first CSI may be obtained by the base station performing the first channel measurement according to the first measurement configuration information configured by the base station by configuring the first CSI process. .
- the first CSI process may not be configured, and the uplink signal measurement by the base station is obtained and sent to the terminal. Since the base station performs uplink signal measurement based on the full antenna, the accuracy of the channel measurement can also be improved.
- the acquiring, by the terminal, the first channel information includes:
- the first channel measurement includes:
- the third CQI is determined according to the third sub-PMI.
- Wl is a block diagonal array, and block diagonal array Wl is used to match the spatial characteristics of the same antenna.
- W2 mainly selects the phase between different polarized antennas and the column selection of W1 for W1.
- the method further includes: reporting the measured channel information to the base station, where the method includes: reporting the first CSI of the first channel, where the first CSI includes:
- Spear ⁇ one RI, first PMI and first CQI; or
- Spear ⁇ one RI, first sub-PMI and first CQI;
- Spear ⁇ one RI, third PMI and third CQI; or
- the method further includes: reporting a third CSI of the third channel, where the third CSI includes: Third RI, third PMI, and third CQI; or
- a third RI, a third PMI, a fourth PMI, a third CQI, and a fourth CQI or a third RI, a third PMI, a fourth PMI, a third CQI, and a difference between the fourth CQI and the first CQI; or
- a third PMI and a difference between the third CQI and the second CQI; or a third RI, a third PMI, a third CQI, and a fourth CQI; or
- the third PMI, the fourth PMI, and the fourth CQI are different from the third CQI.
- the precoding matrix corresponding to the fourth PMI is a matrix obtained by performing a Kroneck product of W2 ( 2 ) and W2 ( 3 ); or
- the fourth PMI is reported, and the precoding matrix corresponding to the fourth PMI is a matrix obtained by performing a Kroneck product of W1 ( 2 ) and W1 ( 3 ).
- the first channel measurement, the second channel measurement, and the third channel measurement respectively correspond to the first CSI process, the second CSI process, and the third CSI process.
- the process of reporting for the first, second and third CSI processes :
- the period for reporting the RI for the first CSI process is the first integer multiple of the period for reporting the RI for the second CSI and the third CSI process;
- the period for reporting the PMI to the first CSI process is the second integer multiple of the period for reporting the PMI by the second CSI and the third CSI process;
- the period for reporting the CQI for the first CSI process is the third integer multiple of the period for reporting the CQI for the second CSI and the third CSI process.
- the number of the bound CSI process that defines the CSI measurement range is configured by the base station high layer signaling or dynamic signaling.
- the terminal reports whether it needs to adopt the identifier of the CSI measurement that defines the CSI measurement range.
- the terminal first reports the CSI information that does not limit the CSI measurement range, and then reports the identification of the restricted measurement that defines the CSI measurement range, and then reports the CSI information that defines the CSI measurement range.
- the terminal first reports the CSI information of the first CSI-defined measurement range, and then reports the identifier of the limited measurement that needs to be limited by the second CSI, and then reports the CSI information of the second CSI-defined measurement range.
- the terminal first reports the CSI information that does not limit the CSI measurement range, and then receives the identifier of the restricted measurement that needs to be limited by the CSI measurement range, and then the UE reports the CSI that limits the CSI measurement range. information.
- the UE first reports the CSI information of the first CSI-defined measurement range, and then receives the base station.
- the high-level signaling or dynamic signaling needs to adopt the identifier of the limited measurement of the measurement range of the second CSI, and then the UE reports the CSI information of the measurement range using the second CSI.
- the CSI measurement range includes: limiting the measurement range of the RI, or limiting the number of antenna ports of the reported PMI.
- the first measurement configuration information is sent by the base station to the terminal, for example, may be configured to the terminal by using the high layer signaling, and configured to perform the first channel measurement by the terminal, to obtain First CSI.
- each of the above channel measurements may correspond to one CSI process, and the base station may configure multiple CSI processes for the terminal, and in each CSI process configuration, the base station configures channel state information reference signals for the terminal (channel state information).
- - reference signal CSI-RS
- CSI-IM channel state information interference measurement resource
- the configuration of the pilot is as follows:
- Configure N CSI-RS pilot configuration information (CSI-RS pattern), where N is a positive integer greater than 1, and the number of ports of one CSI-RS pattern (first CSI-RS pattern) is greater than at least one of the remaining ones
- the number of ports of the CSI-RS pattern in particular, the port of the first CSI-RS is the product of the number of other CSI-RS ports.
- the number of ports of the first CSI-RS is 16
- the second CSI-RS port is 4 is a horizontal port
- the third CSI-RS port is 4 is a vertical port
- the port of the first CSI-RS is a product of the number of the second CSI-RS port and the number of the third CSI-RS port.
- the remaining CSI-RS patterns are a subset of the first CSI-RS pattern.
- 16 ports of the first CSI-RS pattern are respectively mapped to 0 to 15 of the shaded area in the figure, and 4 ports of the second CSI-RS pattern are respectively mapped to 0, 1 of the subset of the first pattern.
- the positions of the 2, 3 ports, the 4 ports of the third CSI-RS pattern are respectively mapped to the positions of the ports 0, 4, 8, 12 of the first pattern.
- the transmission period of the first CSI-RS pattern is greater than or equal to the transmission period of the remaining CSI-RS patterns.
- the transmitted subframe offset of the first CSI-RS pattern is A CSI — RS 1
- the subframe offset of the remaining CSI-RS pattern is A CSI — RS j
- j is an index of the CSI-RS pattern.
- the subframe offset of each CSI-RS pattern may be the same or different.
- the subframe period of the transmission of the first CSI-RS pattern is r CSI _ RS 1
- the subframe period of the transmission period of the remaining CSI-RS pattern is RS , j, j is not equal to 1.
- the transmission period of the first CSI-RS pattern is an integer multiple of the transmission period of the other at least one CSI-RS pattern, : r CSI .
- RS 1 K r CSI — RSj , K is an integer, or
- the configuration, measurement or feedback of the three sets of channel information corresponds to three CSI processes (CSI process).
- the first CSI process corresponds to the antenna pattern of the entire 2D array, for example, corresponding to the first CSI-RS pattern in FIG.
- the number is X ( 1 ) ), the group number of the channel information in parentheses;
- the second CSI process corresponds to the pattern of a horizontal antenna (the number of antennas is X (2) ), corresponding to the second CSI in FIG. 5 .
- the third CSI process corresponds to a pattern of vertical antennas (the number of antennas is X (3) ) corresponding to the third CSI-RS pattern in FIG.
- Measurement and reporting of the first set of channel information including at least one of the following:
- the first PMI is measured and reported according to the rank RI (1), and the number of ports of the precoding matrix W1 ( 1 ) corresponding to the first PMI is the number of pilot ports X ( 1 ) configured by the first CSI process;
- the first CQI reported by the RI according to the reported RI and using the transmit diversity scheme, or the open-loop spatial multiplexing mode, or the first PMI, or the first sub-PMI or the specific PMI is CQI (1)
- a specific PMI can be configured according to high layer signaling or dynamic signaling.
- Measurement and reporting of the second set of channel information including at least one of the following:
- the RI of the second set of channel information is RI (2) associated with RI (1) in the first set of channel information, Is a function of RI (1), expressed as RI ( 2 ) ⁇ RI ( 1 ) , where RI (1) is the RI measured and reported by the first CSI-RS pattern configured according to the first CSI process; or RI ( 1
- the uplink signal may be the SRS, and the signaling may be dynamic signaling or high layer signaling.
- the UE measures the RI of the second group of channel information in the measurement range of RI ( 2 ) ⁇ RI ( 1 ) according to the second CSI-RS pattern, and then reports the result;
- the UE feeds back the precoding information PMI(2) of the second group channel information according to the reported RI(2), and the precoding matrix corresponding to PMI(2) is the measurement of the number of lines of W(2) for the second group channel information configuration.
- the number of pilot ports X (2), the number of columns is the reported RI (2).
- the UE obtains the second CQI of the second channel: CQI (2) according to the reported RI of the second channel: RI (2), and the second PMI of the second channel or the second sub-PMI: and reports.
- W ( 2 ) is obtained directly based on RI ( 2 ), where the dimension of PMI ( 2 ) is X2x RI ( 2 ), the number of rows is X2, and the number of columns For RI (2).
- Measurement and reporting of the third set of channel information including at least one of the following:
- the RI of the third set of channel information is RI (3), associated with RI (1) in the first set of channel information and RI (2) in the second set of channel information, is RI (1) and RI (2) Function, expressed as floor (RI (1) / RI (2) ) ⁇ RI ( 3 ) ⁇ RI ( 1 ) , floor is rounded down, where R (1) is the first configured according to the first CSI process A CSI-RS pattern is measured and reported RI; or RI (1) is obtained by the base station by using an uplink signal, and then configured by the signaling to the UE, the uplink signal may be an SRS, and the signaling may be dynamic.
- RI(2) is the RI measured and reported according to the second CSI-RS pattern configured according to the second CSI process; or RI (2) is measured by the base station through the uplink signal, and then configured by signaling
- the uplink signal of the UE may be an SRS, and the signaling may be dynamic signaling or high layer signaling.
- the UE feeds back the precoding information PMI(3) of the third group channel information according to the reported RI(3), and the precoding matrix corresponding to PMI(3) is the measurement of the number of lines of W(3) for the third group channel information configuration.
- W(3) W1(3) xW2(3)
- W1(3) xW2(3) W1(3) xW2(3)
- the PMI (4) corresponding to the precoding matrix is W (4)
- the number of rows is the number of measurement pilot ports configured by the first group of channel information X ( 1 ) or the measurement guide of the second group of channel information configuration
- PMI ( 4 ) can be obtained according to PMI ( 2 ) and PMI ( 3 ).
- A®B is a block matrix of mp x nq:
- the process of taking RI ( 1 ) column does not necessarily start from the first column, and we can start the continuous RI ( 1 ) column from the P column.
- the selection is not necessarily continuous RI (1) column, which may be a discrete selection; the column selection process may be performed on the UE side or on the base station side, and if performed on the UE side, the UE needs to select the result of the column selection.
- the sequence of the Kronecker product is notified to the base station, or the default Kronecker product order is W(2) and W(3) where the number of antennas is larger, or W (2) and The matrix with the larger rank in W (3) is first, and the UE calculates the fourth CQI, CQI (4) according to the obtained W (4).
- the UE obtains CQI(3) according to the reported RI (3) and PMI(3) and reports it and/or the UE obtains CQI(4) according to the reported PMI(4) and reports it, where CQI (4) It can be obtained by difference from CQI (3), or by difference from CQI (2), or by difference from CQI (1).
- Measurement and reporting of the RI of the third group of channel information including: (other formulas of the RI measurement range)
- the RI of the third set of channel information is RI (3), associated with RI (1) in the first set of channel information and RI (2) in the second set of channel information, is RI (1) and RI (2) Function, expressed as ceil ( RI ( 1 ) / RI ( 2 ) ) ⁇ RI ( 3 ) ⁇ RI ( 1 ) , ceil is rounded up, where R ( 1 ) is the first configured according to the first CSI process A CSI-RS pattern is measured and reported RI; or RI (1) is obtained by the base station by using an uplink signal, and then configured by the signaling to the UE, the uplink signal may be an SRS, and the signaling may be dynamic.
- RI (2) is the RI measured and reported by the second CSI-RS pattern configured according to the second CSI process; or RI (2) is measured by the base station through the uplink signal, and then configured by signaling
- the uplink signal of the UE may be an SRS, and the signaling may be dynamic signaling or high layer signaling.
- the RI of the third set of channel information is RI (3), associated with RI (1) in the first set of channel information and RI (2) in the second set of channel information, is RI (1) and RI (2) Function, expressed as RI ( 3 ) ⁇ floor ( RI ( 1 ) / RI ( 2 ) ) , where ceil is rounded up, where R ( 1 ) is the first CSI-RS pattern configured according to the first CSI process Measured and reported RI; or RI (1) is obtained by the base station through the uplink signal measurement, and then configured to the UE by signaling, the uplink signal may be SRS, and the signaling may be dynamic signaling or high-level signaling.
- RI (2) be the RI measured and reported by the second CSI-RS pattern configured according to the second CSI process; or RI (2) be measured by the base station through the uplink signal, and then configured to the UE by signaling.
- the upstream signal for the page (fine j 26 Nai) It can be SRS, and the signaling can be dynamic signaling or high-level signaling.
- the RI of the third set of channel information is RI (3), associated with RI (1) in the first set of channel information and RI (2) in the second set of channel information, is RI (1) and RI (2)
- the function, expressed as RI (3) ⁇ ceil (RI (1) / RI (2) ), ceil is rounded up, where R ( 1 ) is the first CSI-RS pattern configured according to the first CSI process Measured and reported RI; or RI (1) is obtained by the base station through the uplink signal measurement, and then configured to the UE by signaling, the uplink signal may be SRS, and the signaling may be dynamic signaling or high-level signaling.
- RI (2) be the RI measured and reported by the second CSI-RS pattern configured according to the second CSI process; or RI (2) is obtained by the base station by using the uplink signal, and then configured by the signaling to the UE,
- the uplink signal may be SRS, and the signaling may be dynamic signaling or high layer signaling.
- RI (2) be the RI measured and reported by the second CSI-RS pattern configured according to the second CSI process; or RI (2) is obtained by the base station by using the uplink signal, and then configured by signaling to the UE,
- the uplink signal may be SRS, and the signaling may be dynamic signaling or high layer signaling.
- RI (3) may not be used.
- the dimensions of (3) and or PMI (4), PMI (3) and PMI (4) are the same as described above.
- the RI of the third set of channel information is RI (3), associated with RI (1) in the first set of channel information and RI (2) in the second set of channel information, is RI (1) and RI (2)
- RI (2) be the RI measured and reported by the second CSI-RS pattern configured according to the second CSI process; or RI (2) is obtained by the base station by using the uplink signal, and then configured by signaling to the UE,
- the uplink signal may be SRS, and the signaling may be dynamic signaling or high-level signaling.
- RI(3) may not report, report PMI (3) and or PMI (4), PMI (3).
- the dimensions with PMI (4) are the same as described above.
- the foregoing methods for determining the RI (3) range may be configured by the base station to the UE, using high layer signaling, or dynamic signaling. For example, one of the determination manners of the measurement ranges of the plurality of RIs may be selected by high-level signaling or dynamic signaling, and the determination manners of the measurement ranges of the plurality of RIs may be switched. Whether the CSI measurement is performed within a certain limited range can be reported by the UE itself by the flag or the base station configuration flag that limits the restricted measurement of the CSI measurement range.
- the UE reports whether it needs to adopt the identifier of the CSI measurement that defines the CSI measurement range.
- the UE first reports the CSI measurement information that does not limit the CSI measurement range, and then reports the identification of the restricted measurement that defines the CSI measurement range, and then reports the CSI measurement information that defines the CSI measurement range.
- the UE first reports the CSI measurement information of the first CSI-defined measurement range, and then reports the identifier of the limited measurement that needs to use the second CSI-defined measurement range, and then reports the CSI measurement information that uses the second CSI-defined measurement range.
- the CSI measurement information that does not limit the CSI measurement range is reported by the UE, and then the base station notifies the identifier of the restricted measurement that defines the CSI measurement range by using the high layer signaling or the dynamic signaling, and then the UE reports the CSI that uses the CSI measurement range. Measurement information.
- the UE first reports the CSI measurement information of the first CSI-defined measurement range, and then the base station notifies the identifier of the limited measurement that needs to use the second CSI-defined measurement range by using the high-layer signaling or the dynamic signaling, and then the UE reports the second CSI.
- CSI measurement information that defines the measurement range.
- the limited measurement of the CSI limited range includes the definition of the range of the RI, the definition of the range of the PMI, and the limitation of the CQI range.
- the definition of the scope of the PMI includes a definition of a set of PMIs, such as a set of PMIs corresponding to different antenna ports.
- First RI, third sub-PMI; or First RI, third sub-PMI and third CQI First RI, third sub-PMI and third CQI.
- Each of the above combinations may further include an identification flag for the restrictive measurement of the CSI measurement range.
- RI ( 1 ) and CQI ( 1 ) are reported together in the first group of channel information, and the timing relationship is reported as shown in FIG. 7 .
- V a third PMI, a third CQI, and a difference between the fourth CQI and the third CQI; or w) a third PMI, and a fourth CQI;
- Gg The third PMI, the fourth PMI, and the difference between the fourth CQI and the second CQI.
- Each of the above combinations may further include an identification flag for the restrictive measurement of the CSI measurement range.
- RI (3) in the third group of channel information is reported separately, W(3) is reported together with CQI(3), W(4) is reported together with CQI(4), and the reporting period of W(4) is W ( 2) and the maximum common divisor of the W (3) reporting period, or equal to min (W (2) reporting period, W (3) reporting period), the timing relationship of the captain is shown in Fig. 12.
- a PMI feedback mode of the dual codebook is required, that is, if it is sub-mode 1 of model-1, then rl is reported with W1, and broadband CQI and W2 are reported. Or if it is configured as sub-mode 2 of model-1, rl is reported separately, and Wl, W2 and broadband CQI are reported.
- the mode is configured as mode 1-0.
- the reported rank is R, and the bit originally reported to the wideband CQI can report the broadband l ( 2 ) corresponding to the second CSI-RS pattern.
- the foregoing CSI process, the first CSI-RS process, the second CSI-RS process, and the third CSI process may be obtained by configuring a CSI process number of the bundling by the base station.
- the base station is configured with five CSI processes
- CSI process 0, CSI process 1, CSI process 2, CSI process 3, CSI process 4, base station configuration CSI process 0, CSI process 2, CSI process 3 are three interrelated CSI processes of bundling.
- the CSI process 0 is the first CSI process
- the CSI process 2 is the second CSI process
- the CSI process 3 is the third process; or the first CSI process is the most CSI process in the three CSI processes.
- the second CSI process is the antenna number
- the third CSI process is the least number of antennas; or the first CSI process is the largest number of antennas, and the second CSIprocess is the larger of the remaining two CSI processes.
- the third CSIprocsss is the third CSIprocss.
- Type 1 reporting supports CQI feedback and UE selected sub-band anti-
- Type 2b, and Type 2c report broadband CQI and PMI feedback
- Type 2a reports broadband PMI
- Type 4 reports broadband CQI
- Type 5 reports RI and broadband PMI
- Type 6 reports RI and PTI A.
- Three non zero power CSI-RS patterns correspond to three CSI processes. There is a correlation between the three processes.
- mode 1-0 in mode 1-0.R8 is configured to feedback the contents of type3 and type4, namely feedback RI ( 1 ) and wideband CQI.
- the number of bits of feedback for RI is shown in Table 3. Or configured to only feed back the content of type4, that is, only feedback the wideband CQI.
- the port of the first CSI pattern in the solution may be 16, 32, 48, 64, ... 128 transmit antennas, and the corresponding maximum RI (1) is 16, 32, ... 128, respectively required
- the number of bits in RI ( 1 ) is 4 bits, 5 bits, . . . .8bitSo
- type 4 is the measured CQI of other CSI processes, defined as mode A3, CQI ( 2 ) of this feedback
- the CQI calculated based on the second CSI-RS pattern or calculated based on the third CSI RS pattern.
- each grid represents one subframe, and the lower digit represents a subframe number.
- the measurement and reporting of the CSI in the third information state information are not measured within any limit. Taking RI as an example, PMI and CQI are equally applicable.
- RT (3) is not measured and reported in the above-defined range.
- ⁇ ( 3 ) and CQI, (3) are calculated based on RT (3). For example, RT (3) only needs to satisfy the number of transmitting antennas less than or equal to the number of transmitting antennas.
- the limitation condition from the time of subframe 5, the UE feels that it should start to report the third channel state information within a certain limited range, so a flag is reported to notify the base station, and then the measurement and reporting of the CSI within the limited range is started, that is, From the fifth son
- the RI (3) reported by the frame is the RI reported by the third RI within the above-defined range.
- the third RI satisfies the limited range of ?/(3)eC2, assuming C2 is less than or equal to ceil ( RI ( 1 ) / a positive integer of RI ( 2 ) ), RI ( 1 ) is the RI of the first channel information, RI (2) is the RI of the second channel information, RI
- RI (3) can only be measured and reported in the range less than 3.
- the flag can also indicate the change of the CSI measurement and reporting limit.
- the RI measurement before the flag is reported is in ?/'(3)eCl, for example, C1 is greater than or equal to ceil ( RI ( 1 ) / RI
- the example given above is a limited range for RI, as shown in Fig. 19.
- the conversion of the limited range of PMI is given below.
- the flag reported before is reported PMI (3)
- the measurement range of the PMI (3) is PM/(3)eC3, for example, C3 is the PMI set with the number of antenna ports X (3)
- the measurement range of PMI (4) is PM/(4)eC4, for example, C4 is the number of antenna ports X (1) PMI collection.
- the flag is configured through high-level signaling or dynamic signaling of the base station, as shown in Figures 20 and 21,
- the execution subject is a base station, including: the base station acquires a second CSI, where the second CSI is associated with the first channel information, where the first channel information includes one or more of the following information.
- the second CSI is associated with the first channel information, and includes:
- a second RI in the second CSI is associated with the first RI in the first CSI.
- the second RI in the second CSI is associated with the first RI in the first CSI, and includes:
- the base station acquires a third CSI, the third CSI being associated with at least one of the first CSI and the second CSI.
- the third CSI is associated with at least one of the first CSI and the second CSI, and includes: a third RI in the third CSI and a first RI and the second CSI of the first CSI At least one of the second RIs is associated; or
- a third RI of the third CSI is associated with at least one of a first RI of the first CSI and an RI configured in the second channel information.
- the determining manner of the measurement range of the second RI in the second CSI is notified by the base station high layer signaling or dynamic signaling.
- the determining manner of the measurement range of the third RI in the third CSI is determined by using high-level signaling or dynamic signaling of the base station, for example, may be selected in determining a measurement range of multiple RIs.
- a high-level signaling or dynamic signaling notification can be switched between the determination manners of the measurement ranges of the plurality of RIs.
- the range of the third RI includes:
- the quotient of the first RI and the second RI is ⁇ the third RI ⁇ the first RI, or the quotient of the first RI and the second RI is taken to be the third RI ⁇ the first RI, or the first RI and the second RI
- the quotient of the RI is ⁇ the third RI ⁇ - RI, or the quotient of the first RI and the second RI is the whole ⁇ third RI ⁇ the first RI, wherein the rounding is rounded up or down Whole; or,
- the quotient of the RI configured in the first RI and the second channel information is ⁇ third 1 ⁇ ⁇ the first RI, or the quotient of the RI configured in the first RI and the second channel information is taken as the third RI ⁇ An RI, or a quotient of the RI configured in the first RI and the second channel information ⁇ third RI ⁇ first RI, or a quotient of the RI configured in the first RI and the second channel information a third RI (the first RI, wherein the rounding is rounded up or rounded down; or
- the third 1 ⁇ ⁇ the first RI and the quotation of the configuration RI, the third 1 ⁇ ⁇ the first RI and the quotation of the configuration RI, the rounding is rounding up or Take down; or,
- a third RI the quotient of the first RI and the second RI is rounded up, and the rounding is rounded up or rounded down;
- the third RI the quotient of the first RI and the RI configured in the second channel information, and the rounding may be rounded up or rounded down.
- the third CSI obtained by the base station includes a third PMI and/or a fourth PMI, where:
- the number of ports of the third PMI is the number of ports of the pilot in the third measurement configuration information, and RI is the third RI; or
- the number of ports of the fourth PMI is the number of ports of the pilot in the first measurement configuration information, and RI is the first RI; or
- the number of ports of the fourth PMI is the number of ports of the pilot in the first measurement configuration information, and RI is the second RI; or
- the number of ports of the fourth PMI is the number of ports of the pilot in the first measurement configuration information
- RI is the third RI
- the number of ports of the fourth PMI is a product of the number of ports of the pilot in the second measurement configuration information and the number of ports of the pilot in the third measurement configuration information, and RI is the second RI and the third RI Product of, or min (first RI, the product of the second RI and the third RI;);
- the number of ports of the fourth PMI is the number of ports of the pilot in the first measurement configuration information
- RI is the product of the second RI and the third RI, or is min (the first RI, the product of the second RI and the third RI;), and min is the minimum value operation.
- the precoding matrix corresponding to the fourth PMI is a Kroneck product of a precoding matrix corresponding to the second PMI and a precoding matrix corresponding to the third PMI; or
- the precoding matrix corresponding to the fourth PMI is a matrix obtained by performing column selection on a Kronecker product of a precoding matrix corresponding to the second PMI and a precoding matrix corresponding to the third PMI.
- the second PMI is a PMI in which the number of ports in the second CSI is the number of pilot ports in the second measurement configuration information, and the number of ports in the third CSI is the number of pilot ports in the third measurement configuration information. PMI.
- the precoding matrix corresponding to the fourth PMI is:
- the third CSI further includes:
- the first CSI includes:
- the W(2) corresponding precoding indication information is a second PMI, the base station indicates a port location corresponding to the second CSI-RS pattern in the first CSI-RS pattern, and the second sub-PMI received by the base station is according to the second CSI-
- the long-term W1 ( 2 ) corresponding precoding indication information reported by the port corresponding to the RS pattern, where W ( 2 ) W1 ( 2 ) xW2 ( 2 );
- the third sub-PMI the base station indicates the port position corresponding to the third CSI-RS pattern in the first CSI-RS pattern, and the third sub-PMI received by the base station is the broadband long-term reported according to the port corresponding to the third CSI-RS pattern.
- W1 (3) corresponding precoding indication information, where W ( 3 ) W1 ( 3 ) xW2 ( 3 );
- the first CSI includes:
- the first CQI in the first CSI includes:
- the first CQI determined based on the manner of transmit diversity, or
- the first CQI determined based on the open-loop spatial multiplexing method, or
- the first CQI determined based on the first PMI, or
- the first CQI determined based on the first PMI of the fixed RI, or
- the first CQI determined according to the first PMI, or
- the first CQI determined according to the first sub-PMI, or
- the third CQI determined according to the third sub-PMI.
- the first CSI obtained by the base station includes:
- Spear ⁇ one RI, first PMI and first CQI; or
- Spear ⁇ one RI, first sub-PMI and first CQI;
- Spear ⁇ one RI, third PMI and third CQI; or
- the first RI, the third sub-PMI and the third CQI are identical to the first RI, the third sub-PMI and the third CQI.
- the third CSI obtained by the base station includes:
- a third RI, a third PMI, a fourth PMI, a third CQI, and a fourth CQI or a third RI, a third PMI, a fourth PMI, a third CQI, and a difference between the fourth CQI and the first CQI; or
- a third PMI and a difference between the third CQI and the second CQI; or a third RI, a third PMI, a third CQI, and a fourth CQI; or
- the third CSI further includes:
- the precoding matrix corresponding to the fourth PMI is a matrix obtained by Kronecker product of W2 ( 2 ) and W2 ( 3 ) or a matrix obtained by performing column selection of a matrix obtained by Kronecker product; or
- the precoding matrix corresponding to the fourth PMI is a matrix obtained by performing a Kronecker product of W1 ( 2 ) and W1 ( 3 ) or a matrix obtained by performing a Kroneck product matrix.
- the CSI includes one or more of the following information: a rank indication RI, a precoding matrix indication PMI, a precoding type indication ⁇ , a channel quality indicator CQI, an interference indication, a CSI Measure the conversion ID of the limited range.
- Each measurement configuration information configured by the base station includes one or more of the following information: a channel measurement reference pilot pattern, a channel measurement reference pilot port number, a channel measurement reference pilot power information, and an interference measurement.
- Reference resource pattern interference measurement reference resource information.
- the pattern of the first channel measurement reference pilot of the first measurement configuration information, the pattern of the second channel measurement reference pilot of the second measurement configuration information, and the third channel measurement reference pilot of the third measurement configuration information meets:
- the pattern of the second channel measurement reference pilot is a subset of the pattern of the first channel measurement reference pilot
- the pattern of the third channel measurement reference pilot is a subset of the pattern of the first channel measurement reference pilot.
- the first channel measurement reference port of the first measurement configuration information, the second channel measurement reference pilot port of the second measurement configuration information, and the third channel measurement reference pilot of the third measurement configuration information meets:
- the number of ports of the first channel measurement reference pilot is a product of the number of ports of the second channel measurement reference pilot and the number of ports of the third channel measurement reference pilot.
- the number of ports of the second channel measurement reference pilot is greater than or equal to the number of ports of the third channel measurement reference pilot.
- the rank in the second channel information is greater than or equal to ranko in the third channel information.
- the transmission period of the reference pilot measured by the first channel is an integer multiple of a transmission period of the reference pilot measured by the channel, and the transmission period of the reference pilot measured by the first channel is the third The integer multiple of the transmission period of the reference pilot of the channel measurement.
- the first channel measurement, the second channel measurement, and the third channel measurement respectively correspond to the first CSI process, the second CSI process, and the third CSI process.
- the reporting period of the RI configured by the first CSI process is the first integer multiple of the reporting period of the RI configured by the second CSI and the third CSI process;
- the reporting period of the PMI configured by the first CSI process is the second integer multiple of the reporting period of the PMI configured by the second CSI and the third CSI process;
- the reporting period of the CQI configured by the first CSI process is a third integer multiple of the reporting period of the CQI configured by the second CSI and the third CSI process.
- the number of the bound CSI process that defines the CSI measurement range is configured by the base station high layer signaling or dynamic signaling.
- the base station receives the identifier of the CSI measurement that is required by the terminal to use the CSI measurement range.
- the base station first receives CSI information that does not have a CSI measurement range, and receives an indication of a restricted measurement that defines a CSI measurement range, and then receives CSI information using a CSI measurement range.
- the base station first receives the CSI information of the first CSI limited measurement range, and then receives the CSI information. It is necessary to adopt a second CSI to define an identification of the limited measurement range of the measurement range, and then receive CSI information using the second CSI-defined measurement range.
- the base station first receives the CSI information that does not limit the CSI measurement range, and then the base station needs to adopt the identifier of the restricted measurement that defines the CSI measurement range by using the high layer signaling or the dynamic signaling, and then the base station receives the UE reporting.
- CSI information defining the CSI measurement range.
- the base station first receives the CSI information of the first CSI-defined measurement range, and then the base station uses the identifier of the limited measurement of the measurement range that needs to be determined by the high-level signaling or the dynamic signaling, and then the base station receives the UE for reporting.
- the second CSI defines the CSI information of the measurement range.
- the CSI measurement range includes: limiting the measurement range of the RI, or limiting the number of antenna ports of the reported PMI.
- the channel information acquiring unit 2210 is configured to acquire first channel information, where the first channel information includes one or more of the following information: first channel state information CSI of the first channel, first used for the first channel measurement Measuring configuration information;
- the configuration information receiving unit 2220 is configured to receive second measurement configuration information that is sent by the base station and used for the second channel measurement.
- the channel measurement unit 2230 is configured to perform the second channel measurement according to the first channel information and the second measurement configuration information, to obtain a second CSI.
- the channel measurement unit 2230 specifically includes:
- a second CSI range determining unit 2310 configured to determine, according to the first channel information, a second CSI range of the second channel measurement
- the second channel measurement unit 2320 is configured to perform, according to the second measurement configuration information, the second channel measurement in a second CSI range of the second channel measurement.
- the second CSI range determining unit 2310 is configured to determine a range of the second CSI measured by the second channel according to the first CSI of the first channel information. Specifically, the method is used to determine a range of the second RI in the second CSI according to the first RI in the first CSI.
- the first CSI is information configured by the base station, or is information measured and reported by the terminal according to the first measurement configuration information, where the range of the second RI is ⁇ the first RI, or the range of the second RI is First RL
- the configuration information receiving unit 2220 is further configured to receive third measurement configuration information used for the third channel measurement.
- the channel measurement unit 2230 is further configured to perform the third channel measurement according to at least one of the first channel information and the second channel information, according to the third measurement configuration information, to obtain a third CSI.
- the second channel information includes the second CSI measured by the second channel, or a configured CSI configured by a base station.
- the channel measurement unit 2230 further includes:
- the third CSI range determining unit 2410 is configured to determine a CSI range of the third channel measurement according to at least one of the first channel information and the second channel information.
- the third CSI range determining unit 2410 is specifically configured to determine a third channel test according to at least one of the first CSI and the second CSI.
- the third channel measuring unit 2420 is configured to perform, according to the third measurement configuration information, the third channel measurement within a CSI range of the third channel measurement.
- the third CSI range determining unit 2410 is specifically configured to determine a range of the third RI of the third CSI according to at least one of the first RI of the first CSI and the second RI of the second CSI. Or determining a range of the third RI of the third CSI according to at least one of the first RI of the first CSI and the configured RI in the second channel information.
- the value of the third RI is in a fixed manner, or is notified by a high layer signaling or dynamic signaling of the base station.
- the range of the third RI includes:
- the quotient of the first RI and the second RI is ⁇ the third RI ⁇ the first RI, or the quotient of the first RI and the second RI is taken to be the third RI ⁇ the first RI, or the first RI and the second RI
- the quotient of the RI is ⁇ the third RI ⁇ - RI, or the quotient of the first RI and the second RI is the whole ⁇ third RI ⁇ the first RI, wherein the rounding is rounded up or down Whole; or,
- the quotient of the RI configured in the first RI and the second channel information is ⁇ third 1 ⁇ ⁇ the first RI, or the quotient of the RI configured in the first RI and the second channel information is taken as the third RI ⁇ An RI, or a quotient of the RI configured in the first RI and the second channel information ⁇ third RI ⁇ first RI, or a quotient of the RI configured in the first RI and the second channel information a third RI (the first RI, wherein the rounding is rounded up or rounded down; or
- a third RI ⁇ a quotient of the RI configured in the first RI and the second channel information, and a third quotation of the first RI and the RI configured in the second channel information , the rounding is rounded up or rounded down;
- a third RI the quotient of the first RI and the second RI is rounded up, and the rounding is rounded up or rounded down;
- the third RI the quotient of the first RI and the RI configured in the second channel information, and the rounding may be rounded up or rounded down.
- the third channel measurement unit 2420 includes:
- a PMI determining unit configured to determine a PMI of the third CSI, where the PMI of the third CSI includes a third PMI and/or a fourth PMI, where the PMI determining unit is specifically configured to be configured according to the third measurement Determining, by the third RI, the third PMI, the number of ports of the third PMI is the number of ports of the pilot in the third measurement configuration information, and RI is the third RI; or
- the fourth PMI Determining, according to the first channel information and the second channel information, the fourth PMI, where the number of ports of the fourth PMI is the number of ports of the pilot in the first measurement configuration information, where RI is Second RI; or Determining, according to the first channel information and the third channel information, the fourth PMI, where the number of ports of the fourth PMI is the number of ports of the pilot in the first measurement configuration information, and RI is the third RI; or
- RI is the product of the second RI and the third RI, or is min (the first RI, the product of the second RI and the third RI ;);
- Determining, according to the first channel information, the second channel information, and the third channel information, the fourth PMI, and the number of ports of the fourth PMI is a guide in the first measurement configuration information.
- the number of ports of the frequency, RI is the product of the second RI and the third RI, or is min (the first RI, the product of the second RI and the third RI), min is the minimum value operation .
- the precoding matrix corresponding to the fourth PMI may be a Kroneck product of the precoding matrix corresponding to the second PMI and the precoding matrix corresponding to the third PMI; or the precoding matrix corresponding to the fourth PMI is a pair A matrix obtained by column selection of a precoding matrix corresponding to the two PMIs and a Kronecker product of the precoding matrix corresponding to the third PMI. Specifically, it can be:
- the third channel measurement unit 2420 further includes: a CQI determining unit, configured to determine a third CQI according to the third PMI; or determine a fourth CQI according to the fourth PMI.
- the channel measurement unit 2230 further includes:
- a first channel measurement unit 2510 configured to perform the first channel measurement, specifically, determining, according to the first measurement configuration information, a first CQI based on a transmit diversity manner, or based on the first measurement configuration information, based on Open loop spatial multiplexing determines the first CQI, or
- the terminal device of this embodiment further includes: a reporting unit 2610.
- the reporting unit 2610 includes: a first channel reporting unit, configured to report a first reporting CSI of the first channel, where the first reporting CSI includes:
- First RI, second PMI and second CQI First RI, third PMI; or
- the first RI, the third sub-PMI and the third CQI are identical to the first RI, the third sub-PMI and the third CQI.
- the first channel reporting unit is specifically configured to use according to the second when reporting the second sub-PMI
- the precoding indication information corresponding to W(2) reported by the port corresponding to the CSI-RS pattern is the second PMI.
- the first channel reporting unit is configured to indicate, in the first CSI-RS pattern, a port location corresponding to the second CSI-RS pattern, and then the port corresponding to the second CSI-RS pattern, when the third sub-PMI is reported.
- the first channel reporting unit is configured to indicate, in the first CSI-RS pattern, a port location corresponding to the third CSI-RS pattern, and then according to the port corresponding to the third CSI-RS pattern, when the third sub-PMI is reported.
- the reporting unit 2610 further includes: a third channel reporting unit, configured to report a third reporting CSI of the third channel, where the third reporting CSI includes:
- a third RI a spear ⁇ 2 PMI, and a difference between the third CQI and the second CQI; or a third RI, a third PMI, a third CQI, and a fourth CQI; or
- a third RI a spear two PMI, a fourth PMI, a third CQI, and a fourth CQI difference from the first CQI; or a third RI, a third PMI, a fourth PMI, a third CQI, and a difference between the fourth CQI and the second CQI; or
- a third PMI and a difference between the third CQI and the second CQI; or a third RI, a third PMI, a third CQI, and a fourth CQI; or
- the third PMI, the fourth PMI, and the fourth CQI are different from the third CQI.
- the fourth PMI is reported, and the precoding matrix corresponding to the fourth PMI is a matrix obtained by performing a Kroneck product of W2 ( 2 ) and W2 ( 3 ) or a matrix obtained by performing a Kroneck product. To the matrix; or
- the fourth PMI is reported, and the precoding matrix corresponding to the fourth PMI is a matrix obtained by performing a Kroneck product with W1 ( 2 ) and W1 ( 3 ) or a matrix obtained by performing a Kroneck product matrix.
- each CSI includes one or more of the following information: a rank indication RI, a precoding matrix indication PMI, a precoding type indication ⁇ , a channel quality indicator CQI, an interference indication, and a conversion identifier of a CSI measurement limited range.
- Each of the measurement configuration information includes one or more of the following information: a channel measurement reference pilot pattern, a channel measurement reference pilot port number, a channel measurement reference pilot power information, a pattern of interference measurement reference resources, Interference measurement reference resource information.
- the pattern of the first channel measurement reference pilot of the first measurement configuration information, the pattern of the second channel measurement reference pilot of the second measurement configuration information, and the pattern of the third channel measurement reference pilot of the third measurement configuration information satisfy :
- the pattern of the second channel measurement reference pilot is a subset of the pattern of the first channel measurement reference pilot
- the pattern of the third channel measurement reference pilot is a subset of the pattern of the first channel measurement reference pilot.
- the port of the first channel measurement reference pilot of the first measurement configuration information, the port of the second channel measurement reference pilot of the second measurement configuration information, and the port of the third channel measurement reference pilot of the third measurement configuration information satisfy :
- the number of ports of the first channel measurement reference pilot is a product of the number of ports of the second channel measurement reference pilot and the number of ports of the third channel measurement reference pilot.
- the number of ports of the second channel measurement reference pilot is greater than or equal to the number of ports of the third channel measurement reference pilot.
- the ran k in the second channel information is greater than or equal to the rank in the third channel information.
- the sending period of the reference pilot measured by the first channel is an integer multiple of the sending period of the reference pilot of the channel measurement
- the sending period of the reference pilot measured by the first channel is An integer multiple of the transmission period of the reference pilot measured by the third channel.
- the first channel information includes the first CSI, and the terminal acquires first channel information, including:
- the first channel measurement, the second channel measurement, and the third channel measurement respectively correspond to the first CSI process, the second CSI process, and the third CSI process.
- the period for reporting the RI for the first CSI process is the first integer multiple of the period for reporting the RI for the second CSI and the third CSI process;
- the period for reporting the PMI to the first CSI process is the second integer multiple of the period for reporting the PMI by the second CSI and the third CSI process;
- the period for reporting the CQI for the first CSI process is the third integer multiple of the period for reporting the CQI for the second CSI and the third CSI process.
- the terminal device in this embodiment uses the number of the bound CSI process that defines the CSI measurement range to be configured by the base station high layer signaling or dynamic signaling.
- the reporting unit 2610 is further configured to report whether it is necessary to adopt an identifier of a CSI measurement that defines a CSI measurement range.
- the reporting unit 2610 is also used to first upload the CSI information that does not define the CSI measurement range, and then report the identification of the restricted measurement that needs to be limited to the CSI measurement range, and then report the CSI information using the limited CSI measurement range.
- the reporting unit 2610 is further configured to report the CSI information of the first CSI-defined measurement range, and then report the identifier of the limited measurement that needs to use the second CSI-defined measurement range, and then report the CSI information of the second CSI-defined measurement range.
- the reporting unit 2610 is further configured to: firstly, the CSI information that does not define the CSI measurement range, and then receive the identifier of the restricted measurement that needs to be limited by the CSI measurement range that is notified by the base station through high layer signaling or dynamic signaling, and then the UE reports CSI information defining a CSI measurement range is employed.
- the reporting unit 2610 is further configured to first report the CSI information of the first CSI-defined measurement range, and then receive the identifier of the limited measurement that the base station needs to adopt the second CSI to limit the measurement range by using the high-layer signaling or the dynamic signaling, and then the UE The CSI information of the measurement range limited by the second CSI is reported.
- the CSI measurement range includes: limiting the measurement range of the RI, or limiting the number of antenna ports of the reported PMI.
- a base station according to an embodiment of the present invention includes:
- a second CSI acquiring unit configured to acquire a second CSI, where the second CSI is associated with the first channel information, where the first channel information includes one or more of the following information: a first channel state of the reported first channel The information CSI, the first channel state information CSI of the first channel configured by the base station, and the first measurement configuration information used for the first channel measurement.
- the second CSI is associated with the first channel information, and includes: a second RI in the second CSI is associated with the first RI in the first CSI.
- the second RI in the second CSI is associated with the first RI in the first CSI, and includes: the second 1 ⁇ ⁇ the first RI; or the second 1 1 First RI;
- the base station further includes: a third CSI acquiring unit, configured to acquire a third CSI, where the third CSI is associated with at least one of the first CSI and the second CSI.
- the third CSI is associated with at least one of the first CSI and the second CSI, and includes: a third RI in the third CSI and a first RI and the second CSI of the first CSI At least one of the second RIs is associated; or
- a third RI of the third CSI is associated with at least one of a first RI of the first CSI and an RI configured in the second channel information.
- the determining manner of the measurement range of the second RI in the second CSI is notified by the base station high layer signaling or dynamic signaling.
- the determining manner of the measurement range of the third RI in the third CSI is notified by the base station high layer signaling or dynamic signaling.
- the range of the third RI includes:
- the quotient of the first RI and the second RI is ⁇ the third RI ⁇ the first RI, or the quotient of the first RI and the second RI is taken to be the third RI ⁇ the first RI, or the first RI and the second RI
- the quotient of the RI is ⁇ the third RI ⁇ - RI, or the quotient of the first RI and the second RI is the whole ⁇ third RI ⁇ the first RI, wherein the rounding is rounded up or down Whole; or,
- the quotient of the RI configured in the first RI and the second channel information is ⁇ third 1 ⁇ ⁇ the first RI, or the quotient of the RI configured in the first RI and the second channel information is taken as the third RI ⁇ An RI, or a quotient of the RI configured in the first RI and the second channel information ⁇ third RI ⁇ first RI, or a quotient of the RI configured in the first RI and the second channel information a third RI (the first RI, wherein the rounding is rounded up or rounded down; or
- the third 1 ⁇ ⁇ the first RI and the quotation of the configuration RI, the third 1 ⁇ ⁇ the first RI and the quotation of the configuration RI, the rounding is rounding up or Take down; or,
- a third RI the quotient of the first RI and the second RI is rounded up, and the rounding is rounded up or rounded down;
- the third RI the quotient of the first RI and the RI configured in the second channel information, and the rounding may be rounded up or rounded down.
- the third CSI obtained by the third CSI acquiring unit includes a third PMI and/or a fourth
- the number of ports of the third PMI is the number of ports of the pilot in the third measurement configuration information, and RI is the third RI; or
- the number of ports of the fourth PMI is the number of ports of the pilot in the first measurement configuration information, and RI is the first RI; or
- the number of ports of the fourth PMI is the number of ports of the pilot in the first measurement configuration information, and RI is the second RI; or
- the number of ports of the fourth PMI is the number of ports of the pilot in the first measurement configuration information
- RI is the third RI
- the number of ports of the fourth PMI is a product of the number of ports of the pilot in the second measurement configuration information and the number of ports of the pilot in the third measurement configuration information, and RI is the second RI and the third RI Product of, or min (first RI, the product of the second RI and the third RI;);
- the number of ports of the fourth PMI is the number of ports of the pilot in the first measurement configuration information, RI is the product of the second RI and the third RI, or is min (first RI, the The product of the second RI and the third RI ;), min is the minimum operation.
- the precoding matrix corresponding to the fourth PMI is a Kroneck product of a precoding matrix corresponding to the second PMI and a precoding matrix corresponding to the third PMI; or
- the precoding matrix corresponding to the fourth PMI is a matrix obtained by performing column selection on a Kronecker product of a precoding matrix corresponding to the second PMI and a precoding matrix corresponding to the third PMI.
- the second PMI is a PMI in which the number of ports in the second CSI is the number of pilot ports in the second measurement configuration information, and the number of ports in the third CSI is the number of pilot ports in the third measurement configuration information. PMI.
- the precoding matrix corresponding to the fourth PMI is:
- the third CSI further includes:
- the first CSI includes:
- the W(2) corresponding precoding indication information is a second PMI, the base station indicates a port location corresponding to the second CSI-RS pattern in the first CSI-RS pattern, and the second sub-PMI received by the base station is according to the second CSI-
- the long-term W1 ( 2 ) corresponding precoding indication information reported by the port corresponding to the RS pattern, where W ( 2 ) W1 ( 2 ) xW2 ( 2 );
- the third sub-PMI the base station indicates the port position corresponding to the third CSI-RS pattern in the first CSI-RS pattern, and the third sub-PMI received by the base station is the broadband long-term reported according to the port corresponding to the third CSI-RS pattern.
- W1 (3) corresponding precoding indication information, where W ( 3 ) W1 ( 3 ) xW2 ( 3 );
- the first CSI includes:
- the first CQI in the first CSI includes:
- the first CQI determined based on the manner of transmit diversity, or
- the first CQI determined based on the open-loop spatial multiplexing method, or
- the first CQI determined according to the first PMI, or
- the first CQI determined according to the first sub-PMI, or
- the third CQI determined according to the third sub-PMI.
- the first CSI includes:
- Spear ⁇ one RI, first PMI and first CQI; or
- Spear ⁇ one RI, first sub-PMI and first CQI;
- Spear ⁇ one RI, the second. PMI and the second CQI; or
- Spear ⁇ one RI, third PMI and third CQI; or
- the third CSI includes:
- a third RI, a third PMI, a fourth PMI, a third CQI, and a fourth CQI or a third RI, a third PMI, a fourth PMI, a third CQI, and a difference between the fourth CQI and the first CQI; or
- a third PMI and a difference between the third CQI and the second CQI; or a third RI, a third PMI, a third CQI, and a fourth CQI; or
- the third CSI further includes:
- the precoding matrix corresponding to the fourth PMI is a matrix obtained by Kronecker product of W2 ( 2 ) and W2 ( 3 ) or a matrix obtained by performing column selection of a matrix obtained by Kronecker product; or
- the precoding matrix corresponding to the fourth PMI is a matrix obtained by performing a Kronecker product of Wl ( 2 ) and Wl ( 3 ) or a matrix obtained by performing a column selection of a matrix obtained by the Kroneck product.
- Each of the CSIs includes one or more of the following information: a rank indication RI, a precoding matrix indication PMI, a precoding type indication ⁇ , a channel quality indicator CQI, an interference indication, and a conversion identifier of a CSI measurement limited range.
- Each measurement configuration information configured by the base station includes one or more of the following information: a channel measurement reference pilot pattern, a channel measurement reference pilot port number, a channel measurement reference pilot power information, and an interference measurement.
- Reference resource pattern interference measurement reference resource information.
- the pattern of the first channel measurement reference pilot of the first measurement configuration information, the pattern of the second channel measurement reference pilot of the second measurement configuration information, and the third channel measurement reference pilot of the third measurement configuration information meets:
- the pattern of the second channel measurement reference pilot is a subset of the pattern of the first channel measurement reference pilot
- the pattern of the third channel measurement reference pilot is a subset of the pattern of the first channel measurement reference pilot.
- the first channel measurement reference port of the first measurement configuration information, the second channel measurement reference pilot port of the second measurement configuration information, and the third channel measurement reference pilot of the third measurement configuration information meets:
- the number of ports of the first channel measurement reference pilot is a product of the number of ports of the second channel measurement reference pilot and the number of ports of the third channel measurement reference pilot.
- the number of ports of the second channel measurement reference pilot is greater than or equal to the number of ports of the third channel measurement reference pilot.
- the rank in the second channel information is greater than or equal to ranko in the third channel information.
- the transmission period of the reference pilot measured by the first channel is an integer multiple of a transmission period of the reference pilot measured by the channel, and the transmission period of the reference pilot measured by the first channel is the third The integer multiple of the transmission period of the reference pilot of the channel measurement.
- the first channel measurement, the second channel measurement, and the third channel measurement respectively correspond to the first CSI process, the second CSI process, and the third CSI process.
- the reporting period of the RI configured by the first CSI process is the first integer multiple of the reporting period of the RI configured by the second CSI and the third CSI process;
- the reporting period of the PMI configured by the first CSI process is the second integer multiple of the reporting period of the PMI configured by the second CSI and the third CSI process;
- the reporting period of the CQI configured by the first CSI process is a third integer multiple of the reporting period of the CQI configured by the second CSI and the third CSI process.
- the number of the bound CSI process that defines the CSI measurement range is configured by the base station high layer signaling or dynamic signaling.
- the base station receiving the CSI measurement required by the terminal to use the CSI measurement range Knowledge.
- the base station first receives CSI information that does not have a CSI measurement range, and receives an indication of a restricted measurement that defines a CSI measurement range, and then receives CSI information using a CSI measurement range.
- the base station first receives the CSI information of the first CSI-defined measurement range, and then receives the identifier of the limited measurement that needs to adopt the second CSI-defined measurement range, and then receives the CSI information that uses the second CSI-defined measurement range.
- the base station first receives the CSI information that does not limit the CSI measurement range, and then the base station needs to adopt the identifier of the restricted measurement that defines the CSI measurement range by using the high layer signaling or the dynamic signaling, and then the base station receives the UE reporting.
- CSI information defining the CSI measurement range.
- the base station first receives the CSI information of the first CSI-defined measurement range, and then the base station uses the identifier of the limited measurement of the measurement range that needs to be determined by the high-level signaling or the dynamic signaling, and then the base station receives the UE for reporting.
- the second CSI defines the CSI information of the measurement range.
- the CSI measurement range includes: limiting the measurement range of the RI, or limiting the number of antenna ports of the reported PMI. . ⁇
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JP2016539375A JP6302068B2 (ja) | 2013-09-04 | 2013-09-04 | チャネル測定方法、端末デバイス、及び基地局 |
PCT/CN2013/082920 WO2015032038A1 (zh) | 2013-09-04 | 2013-09-04 | 信道测量方法、终端设备及基站 |
US15/061,386 US10390246B2 (en) | 2013-09-04 | 2016-03-04 | Channel measurement method, terminal device, and base station |
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