WO2017076280A1 - Procédé et application de configuration de mesurage de canal, et procédé et appareil de renvoi d'informations de canal - Google Patents

Procédé et application de configuration de mesurage de canal, et procédé et appareil de renvoi d'informations de canal Download PDF

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Publication number
WO2017076280A1
WO2017076280A1 PCT/CN2016/104253 CN2016104253W WO2017076280A1 WO 2017076280 A1 WO2017076280 A1 WO 2017076280A1 CN 2016104253 W CN2016104253 W CN 2016104253W WO 2017076280 A1 WO2017076280 A1 WO 2017076280A1
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WIPO (PCT)
Prior art keywords
feedback
sets
terminal
pilots
base station
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PCT/CN2016/104253
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English (en)
Chinese (zh)
Inventor
陈艺戬
李儒岳
戴博
鲁照华
徐俊
肖华华
蔡剑兴
吴昊
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中兴通讯股份有限公司
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Publication of WO2017076280A1 publication Critical patent/WO2017076280A1/fr

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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0417—Feedback systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]

Definitions

  • the present invention relates to the field of communications, and in particular, to a channel measurement configuration method and apparatus, and channel information feedback method and apparatus.
  • a transmitting end and a receiving end use a plurality of antennas to obtain a higher rate in a spatial multiplexing manner.
  • an enhanced technology is that the receiving end feeds back the channel information of the transmitting end, and the transmitting end uses the transmitting precoding technology according to the obtained channel information, which can greatly improve the transmission performance.
  • SU-MIMO single-user multiple-input multiple-output
  • MIMO Multi-input Multi-output, multiple-input multiple-output
  • channel feature vector information is used for precoding directly; for multi-user MIMO (MU-MIMO) , need more accurate channel information.
  • the following describes some basic contents related to the acquisition of CSI (channel state information, including channel part and interference part) and terminal side CSI quantization feedback.
  • CSI channel state information, including channel part and interference part
  • the uplink channel can be measured by transmitting the SRS and then the downlink channel matrix can be obtained.
  • the FDD system is difficult to obtain accurate CSI information in this way because the uplink and downlink are not in the same frequency band.
  • the following typical CSI feedback scenarios and corresponding feedback techniques exist in the FDD system; if the supported antenna dimensions are small, less than or equal to 8 antennas, the channel measurement pilot and CSI feedback overhead are generally considered acceptable, for the sake of simplicity. Full-dimensional measurements and CSI feedback are used.
  • FDD mainly considers this scenario, using full-dimensional pilot and CSI feedback.
  • the feedback adopts implicit feedback.
  • the base station sends a set of channel measurement pilots to the terminal, and the terminal is based on the pilot.
  • the pilot resource can be configured with 2-port CSI-RS, 4-port CSI-RS, and 8-port CSI-RS; the terminal detects these pilots and estimates the channel matrix for channel information quantization; generally the content of the quantized CSI It mainly includes (RI/PMI/CQI): Channel Quality Indication (CQI), Precoding Matrix Indicator (PMI), and Rank Indicator (RI). .
  • CQI Channel Quality Indication
  • PMI Precoding Matrix Indicator
  • RI Rank Indicator
  • CQI is an indicator to measure the quality of downlink channels.
  • CQI can be understood as a kind of quantization of signal to interference and noise ratio SINR.
  • CQI is represented by integer values of 0-15, which respectively represent different CQI levels, and different CQIs correspond to their respective modulation modes and coding codes.
  • Rate (MCS) The RI is used to describe the number of spatially independent channels, corresponding to the rank of the channel response matrix. In the spatial multiplexing mode, the UE needs to feed back the RI information, and the other modes do not need to feed back the RI information.
  • the rank of the channel matrix corresponds to the number of layers.
  • the PMI feeds back the best precoding information, based on the index feedback, indicating the codeword of the agreed codebook that best matches the characteristics of the current channel.
  • CSI feedback mode In order to feedback CQI/PMI/RI, LTE also defines multiple CSI feedback modes, which refer to CSI (CQI/PMI/RI) feedback information combinations, including sub-band feedback and wideband feedback or Selecting M subband feedbacks, etc. includes periodic feedback and aperiodic feedback.
  • the aperiodic feedback is transmitted in the PUSCH, including the modes shown in Table 1:
  • the value of x in Mode xy is 1, 2, and 3 respectively represent the feedback characteristics of three CQIs: wideband CQI, subband CQI selected by UE, subband CQI of high layer configuration; value of y includes 0, 1, 2, where 0 represents no PMI, 1 represents 1 (wideband) PMI, and 2 represents multiple PMIs (wideband and one or more subbands);
  • the periodic feedback mode refers to a mode that is fed back periodically in the PUCCH, which includes the modes as shown in Table 2:
  • x in Mode xy is 1, and 2 represents the feedback characteristics of two CQIs: wideband CQI, sub-band CQI selected by UE; y takes 0, 1, where 0 means no PMI, 1 means include PMI;
  • Mode 1-1 needs to consider the case of a single PMI codebook and the case of a dual PMI codebook, and is divided into multiple sub-modes;
  • Mode 1-1 of the normal mode the feedback includes RI feedback, wideband (WB, wideband) PMI i feedback, and wideband CQI feedback; it is divided into two reporting types; the first reporting type is RI, and the second reporting type is Broadband (WB, wideband) PMI i feedback and wideband CQI feedback;
  • Mode 1-1 submode 1 Dual codeword requires 2 PMIs i1 and i2 together, i1 is broadband feedback long time feedback, i2 can be subband short time feedback; this submode contains 2 reports Reporting type: RI/PMI i1 joint coding, and broadband PMI i2and broadband CQI;
  • Mode 1-1 sub-mode 2 in dual PMI feedback includes RI feedback, wideband (WB, wideband) PMI i1, wideband PMI i2 feedback, wideband CQI feedback; divided into two reporting types; first reporting type For RI, the second reporting type is broadband (WB, wideband) PMI i1/i2 joint coding feedback and wideband CQI feedback; here i1 and i2 both perform sampling processing of some codebook indexes to reduce overhead;
  • Mode 2-1 also needs to consider the case of a single PMI codebook and the case of a dual PMI codebook.
  • PTI Precoder Type Indicator
  • PTI indication another case introduces a PTI indication, which can flexibly switch the precoding type of the feedback in the time domain;
  • the feedback includes RI feedback, wideband (WB, wideband) PMI, sub-width PMI feedback; divided into 3 reporting types; the first reporting type is RI, and the second reporting type is broadband. (WB, wideband) PMI feedback and wideband CQI feedback; the third reporting type is the subband CQI;
  • a set of pilots, and reporting CRI (CSI-RS Resource Index, channel measurement pilot resource index, often referred to as BI, beam index) to the base station the terminal reports RI/PMI/CQI based on the selected channel measurement pilot;
  • CRI CSI-RS Resource Index, channel measurement pilot resource index, often referred to as BI, beam index
  • the terminal reports RI/PMI/CQI based on the selected channel measurement pilot;
  • the base station can obtain the total channel information through CRI and traditional CSI feedback.
  • FIG. 1 is a schematic diagram of a vertical application of a vertical sector virtualization technology according to a typical application in the related art.
  • a base station uses different precoding to generate beams in different directions to cover different vertical directions;
  • the pre-coded pilot (vertical beam), and then the horizontal dimension CSI feedback based on the pre-coded pilot.
  • the base station obtains relatively complete channel state information based on the reporting of the precoding pilot (vertical beam) selection information of the terminal and the CSI feedback of the horizontal dimension, and the weight used by the precoding pilot;
  • the base station configures K sets of pilots for the terminal, and the number of pilot ports per set is N k for the terminal to perform beam/pilot resource selection and CSI measurement feedback.
  • the value of N k needs to be equal, but in fact, the value of N k is equal.
  • This limitation is too inflexible, and the base station cannot adopt multiple Different port virtualization methods, the same antenna topology as below, it is difficult to support the choice between two virtualization modes in the existing way;
  • FIG. 2 is a first schematic diagram of two port virtualization and beam transmission modes of the same antenna topology according to an embodiment of the present invention.
  • a 16Tx system (4 rows and 2 columns) is shown, and the virtualization matrix P1 is 8-dimensional matrix. After virtualization, each set of pilot-down dimension ports is 4 dimensions. Two such matrices P1(a) and P1(b) are used to generate two sets of such pilots; for terminal measurement;
  • Figure 3 FIG. 2 is a schematic diagram showing two port virtualization and beam transmission modes of the same antenna topology according to an embodiment of the present invention. As shown in FIG. 3, the same 4-row and 2-column 16Tx system is represented, and the virtualization matrix P2 is a 4-dimensional matrix.
  • each set of pilot-down dimension ports is 8 dimensions, and 4 such matrices P2(a), P2(b), P2(c), and P2(d) are used to generate 4 sets of such pilots; Limiting the N k must be equal will lose the gain of dynamic selection switching between the two virtualization modes above;
  • the embodiments of the present invention provide a channel measurement configuration method and device, and a channel information feedback method and device, so as to at least solve the problem that the base station cannot adopt multiple different port virtualization modes in the related art.
  • a method for configuring channel measurement including:
  • the base station configures a feedback mode of the channel measurement pilot resource index CSI for the terminal.
  • the number of the N k ports is even or the number of the N k ports is an odd number.
  • N k ranges from ⁇ 2, 4 ⁇ or ⁇ 4, 8 ⁇ .
  • the codebook configuration signaling is required to determine the codebook, or the codebook configuration signaling is not required to determine the codebook.
  • the same feedback mode constitutes a set S1; the base station configures the set S1 for the terminal One of the feedback modes is used for feedback of the CSI.
  • k takes any value, it is determined in advance or according to configuration signaling that the codewords in the codebook need to correspond to Y codeword indexes, and Y is an integer greater than 1.
  • a method for configuring channel measurement including:
  • the base station configures, for the terminal, a feedback mode of the channel measurement pilot resource index CSI on the L1 physical uplink control channel PUCCH.
  • the K sets of pilots respectively correspond to the L1 feedback mode.
  • a channel information feedback method including:
  • the terminal selects the kth set of the K sets of pilots to perform channel measurement pilot resource index CSI measurement;
  • the terminal feeds back information indicating the channel measurement pilot resource index BI of the kth set on the physical uplink control channel PUCCH or the physical downlink control channel PUSCH.
  • the reporting type of the BI has a candidate type Type set; the terminal determines a type Type in the type set according to the value information k of the BI. .
  • the candidate type set is determined by the number of ports Nk corresponding to the K sets of pilots configured by the base station.
  • the reporting type includes at least one of the following: BI and ⁇ indicator RI joint coding; BI and RI, joint coding of PTI; BI and RI, joint coding of precoding matrix indicator PMI.
  • the terminal feeds back information about the BI on the PUSCH, and determines a transmission parameter used to transmit the BI according to the value of the BI.
  • the transmission mode of the transmission is jointly determined in combination with the BI and the feedback mode, and the transmission mode includes a modulation and coding mode.
  • the terminal feeds back the information of the BI on the PUSCH, and determines a transmission location of the information for transmitting the BI according to the value of the BI.
  • the determining manner of transmitting the transmission location of the information of the BI includes at least one of the following:
  • a device for configuring channel measurement which is located in a base station, and includes:
  • the second configuration module is configured to configure a feedback mode of the channel measurement pilot resource index CSI for the terminal.
  • a device for configuring channel measurement which is located in a base station, and includes:
  • a channel information feedback device which is located in the terminal, and includes:
  • the feedback module is configured to feed back information indicating the channel measurement pilot resource index BI of the kth set on the physical uplink control channel PUCCH or the physical downlink control channel PUSCH.
  • the problem of port virtualization approach supports the choice of base stations among multiple virtualization approaches.
  • FIG. 1 is a schematic diagram of a vertical sector virtualization technology according to a typical application in the related art
  • FIG. 2 is a first schematic diagram of two port virtualization and beam transmission modes of the same antenna topology according to an embodiment of the present invention
  • FIG. 3 is a second schematic diagram of two port virtualization and beam transmission modes of the same antenna topology according to an embodiment of the present invention
  • FIG. 4 is a flowchart 1 of a method for configuring channel measurement according to an embodiment of the present invention.
  • FIG. 5 is a second flowchart of a method for configuring channel measurement according to an embodiment of the present invention.
  • FIG. 6 is a flowchart of a channel information feedback method according to an embodiment of the present invention.
  • FIG. 7 is a structural block diagram 1 of a configuration apparatus for channel measurement according to an embodiment of the present invention.
  • FIG. 8 is a structural block diagram 2 of a configuration apparatus for channel measurement according to an embodiment of the present invention.
  • FIG. 9 is a structural block diagram of a channel information feedback apparatus according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of a candidate pattern of a CSI-RS resource location according to an embodiment of the present invention.
  • Figure 11 is a first schematic view of the position of a BI in accordance with a preferred embodiment of the present invention.
  • Figure 12 is a second schematic diagram of the location of BI in accordance with a preferred embodiment of the present invention.
  • FIG. 4 is a flowchart 1 of a method for configuring channel measurement according to an embodiment of the present invention. As shown in FIG. 4, the process includes the following steps:
  • Step S404 the base station configures a feedback mode of the channel measurement pilot resource index CSI for the terminal.
  • the k value ranges from ⁇ 1, 2, 4, 8 ⁇ , and K is a positive integer greater than 1.
  • the base station configures a feedback mode of the channel measurement pilot resource index CSI for the terminal, which solves the problem that the base station cannot adopt multiple different
  • the problem of port virtualization approach supports the choice of base stations among multiple virtualization approaches.
  • the number N k are both even or port number of the ports are N k odd.
  • the value of N k ranges from ⁇ 2, 4 ⁇ or ⁇ 4, 8 ⁇ .
  • the codebook configuration signaling is required to determine the codebook, or the codebook configuration signaling is not required to determine the codebook.
  • the base station configures the set in the set S1 for the terminal A feedback mode is used for feedback of the CSI.
  • k in the case where k takes any value, it is determined in advance or according to the configuration signaling that the codewords in the codebook need to correspond to Y codeword indexes, and Y is an integer greater than 1.
  • FIG. 5 is a second flowchart of a method for configuring channel measurement according to an embodiment of the present invention. As shown in FIG. 5, the process includes the following steps:
  • Step S504 the base station configures, for the terminal, a feedback mode of the channel measurement pilot resource index CSI on the L1 physical uplink control channel PUCCH.
  • the K sets of pilots respectively correspond to the L1 feedback mode.
  • the base station configures, for the terminal, a feedback mode of the channel measurement pilot resource index CSI on the L1 physical uplink control channel PUCCH.
  • the K sets of pilots respectively correspond to the L1 feedback mode.
  • FIG. 6 is a flowchart of a channel information feedback method according to an embodiment of the present invention. As shown in FIG. 6, the process includes the following steps:
  • Step S602 The terminal receives the base station configuration signaling, and determines a measurement pilot resource set R.
  • Step S604 the terminal selects the kth set of the K sets of pilots to perform channel measurement pilot resource index CSI measurement;
  • Step S606 The terminal feeds back information indicating the channel measurement pilot resource index BI of the kth set on the physical uplink control channel PUCCH or the physical downlink control channel PUSCH.
  • the reporting type of the BI has a candidate type Type set; the terminal determines a type Type in the type set according to the value information k of the BI.
  • the candidate type set is determined by the number of ports N k corresponding to the K sets of pilots configured by the base station.
  • the reporting type includes at least one of the following: BI and ⁇ indicator RI joint coding; BI and RI, joint coding of PTI; BI and RI, joint coding of precoding matrix indicator PMI.
  • the terminal feeds back the information of the BI on the PUSCH, and determines the transmission parameter used for transmitting the BI according to the value of the BI.
  • the transmission mode of the transmission is jointly determined in combination with the BI and the feedback mode, and the transmission mode includes a modulation and coding mode.
  • the terminal feeds back the information of the BI on the PUSCH, and determines the transmission location of the information for transmitting the BI according to the value of the BI.
  • the determining manner of the transmission location of the information transmitting the BI includes at least one of the following:
  • a device for configuring channel measurement is also provided, and the device is configured to implement the foregoing embodiments and preferred embodiments, and details are not described herein.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • FIG. 7 is a structural block diagram of a configuration apparatus for channel measurement according to an embodiment of the present invention. As shown in FIG. 7, the apparatus is located in a base station, and the apparatus includes:
  • the second configuration module 74 is configured to configure a feedback mode of the channel measurement pilot resource index CSI for the terminal.
  • FIG. 8 is a structural block diagram 2 of a configuration apparatus for channel measurement according to an embodiment of the present invention. As shown in FIG. 8, the apparatus is located in a base station, and the apparatus includes:
  • the fourth configuration module 84 is configured to configure, for the terminal, a feedback mode of the channel measurement pilot resource index CSI on the L1 physical uplink control channel PUCCH.
  • the K sets of pilots respectively correspond to the L1 species.
  • FIG. 9 is a structural block diagram of a channel information feedback apparatus according to an embodiment of the present invention. As shown in FIG. 9, the apparatus is located in a terminal, and the apparatus includes:
  • the selecting module 94 is configured to select the kth set of the K sets of pilots to perform channel measurement pilot resource index CSI measurement;
  • the feedback module 96 is configured to feed back information indicating the channel measurement pilot resource index BI of the kth set on the physical uplink control channel PUCCH or the physical downlink control channel PUSCH.
  • Embodiment 1 Configuration of K sets of measurement pilots:
  • the base station configures K sets of channel measurement pilots (CSI-RSs) to the terminal; the base station sends the K sets of pilots in the resource locations indicated in the configuration information;
  • CSI-RSs channel measurement pilots
  • the base station can be configured with one or more pilots for the terminal, and the configuration information can be sent through high-level signaling; includes periodic information of each set of pilots, sequence information, time-frequency resource location pattern in the subframe, and subframe. Offset information and the like;
  • FIG. 10 is a schematic diagram of candidate patterns of CSI-RS resource locations according to an embodiment of the present invention. As shown in FIG. 10, patterns #0, #1 supporting up to five 8-ports are supported in the same subframe. #2,#3,#4,#5, if you configure 4 port patterns, you can configure 10, and 2 port patterns can be configured with 20;
  • the configured period is 5 ms
  • 5 seed frame offsets can be selected.
  • the maximum value of K can be increased by 5 times.
  • the configuration period is 10ms or more, and the number of pilot sets K that can be configured is more;
  • the base station sends K sets of CSI-RS pilots according to the configured period information, sequence information, time-frequency resource location pattern in the subframe, and subframe offset information, respectively;
  • the terminal detects configuration signaling sent by the base station, acquires pilot-related location information and sequence information, and then detects the received pilot signal at the corresponding location; and uses the received pilot signal and the learned pilot to transmit sequence information.
  • CSI feedback mode base station configures the terminal;
  • the configuration satisfies the following conditions:
  • the N k ports are all even or the N k ports are all odd;
  • Embodiment 2 Configuration constraints of single/double PMI codebook:
  • LTE adopts codebook-based CSI quantization feedback mode.
  • the eigenvector space of the channel matrix is quantized to form the codebook space
  • the transmitting end and the receiving end jointly save or generate the codebook in real time. (The transmitting end is the same as the receiving end). For each channel implementation H, the receiving end is from the codebook space according to certain criteria. Select a codeword that best matches the channel implementation H And the code word
  • the serial number i (codeword serial number) is fed back to the transmitting end.
  • the codeword sequence number is referred to as a Precoding Matrix Indicator (PMI) in the codebook.
  • the transmitting end finds the corresponding precoding codeword according to the serial number i Thereby obtaining corresponding channel information,
  • the feature vector information of the channel is indicated.
  • the channel channel H is generally obtained by performing channel measurement based on the channel measurement pilot.
  • General code space The codebook corresponding to the plurality of Ranks may be further divided, and each of the Ranks corresponds to a plurality of codewords to quantize the precoding matrix formed by the channel feature vectors under the Rank. Since the number of Rank and non-zero feature vectors of the channel are equal, in general, when the Rank is N, the codeword will have N columns. Therefore, the codebook space It can be divided into multiple subcodebooks according to the difference of Rank, as shown in Table 5.
  • the codewords to be stored when Rank>1 are all in the form of a matrix, and the codebook in the LTE protocol is a feedback method of such codebook quantization.
  • Form 1 Single PMI codebook form, such as the Rel-8 version of the 4-antenna codebook; in the form that the codewords under each RI correspond to a PMI index, as shown in Table 6:
  • Form 2 Dual PMI codebook form, such as the 8 antenna codebook of Rel-10 version; the form is that the codewords under each RI correspond to 2 PMI indexes, as shown in Table 7:
  • ⁇ n e j ⁇ n/2
  • ⁇ ' n e j2 ⁇ n/32
  • v' m [1 e j2 ⁇ m/32 ] T
  • the configurable range of this case should be limited. If a dual PMI codebook is used, it should be arbitrarily selected. A set of pilots can be fed back according to the dual PMI codebook and the corresponding feedback mode. Otherwise, it is not allowed; it can be as shown in Table 12. Shown as follows:
  • Embodiment 3 Configuration constraint of feedback mode
  • At least one feedback mode of the corresponding configurable feedback mode set is the same, as shown in Table 14;
  • the normal 1-1 mode and the 1-1submode 2 in the dual codebook can be considered to be the same type of mode. It can be found that although submode2 has two PMIs, it can be equivalent because it is merged after subsampling. It is considered to be a single PMI codebook; however, the normal 1-1 mode and the 1-1submode 1 in the dual codebook are considered to be different modes; because the latter PMI i1 and PMI i2 are transmitted in different reporting types. ;
  • Embodiment 4 The base station separately configures a feedback mode for the K sets of pilots
  • the feedback mode generally has only one configuration for one CSI process, which limits the flexibility of multiple CSI-RS selections; a preferred method is that the base station can configure multiple feedbacks.
  • Mode and associated with multiple sets of CSI-RS for example:
  • the feedback for PUCCH may be as shown in Table 16;
  • the feedback terminal need new technologies to support the case where N k unequal; may be specifically;
  • the terminal receives the base station configuration signaling, and determines a measurement pilot resource set R, where the measurement pilot resource set R includes K sets of pilots; K>1; the terminal selects the kth set of the K sets of pilots to perform CSI measurement;
  • the terminal feeds back the Beam Index information indicating k on the PUCCH;
  • the reporting type including the BI has a candidate type set; the terminal determines a Type in the type set according to the value information k of the BI;
  • association relationship is determined according to the number of ports corresponding to the CSI-RS resource, the feedback mode and the codebook type, or as shown in Table 26 and Table 27:
  • the terminal feedbacks the Beam Index information of the k on the PUCCH or the PUSCH;
  • the terminal needs to determine the reporting type according to the index of the BI; as shown in Table 28:
  • the terminal may determine the feedback mode according to the association relationship between the CSI-RS resource and the feedback mode, and perform feedback according to the feedback content and the feedback manner defined by the transmission mode.
  • the terminal determines the transmission parameter used for transmitting the BI according to the value of the BI; generally, the transmission parameter of the BI is to add an offset based on the transmission parameter of the data or other control information; for example, the data transmission rate is 1 /2 code rate
  • FIG. 11 is a first schematic diagram of the location of BI according to a preferred embodiment of the present invention.
  • FIG. 12 is a schematic diagram 2 of the position of the BI according to a preferred embodiment of the present invention.
  • the position B as shown in FIG. 12, the RI considers the pilot more than the BI information, and in the case, the RI is off. The pilot is closer, and the performance of RI will be better guaranteed;
  • the terminal can judge whether to adopt the location A or the location B according to the following information:
  • N k The size of N k ;
  • the feedback mode corresponding to the selected CSI-RS resource k
  • each of the above modules may be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the modules are located in multiple In the processor.
  • Embodiments of the present invention also provide a storage medium.
  • the storage medium may be configured to store program code for performing the method steps of the above embodiment:
  • the storage medium is further arranged to store program code for performing the method steps of the above-described embodiments:
  • the foregoing storage medium may include, but not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, and a magnetic memory.
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • a mobile hard disk e.g., a hard disk
  • magnetic memory e.g., a hard disk
  • the processor performs the method steps of the foregoing embodiments according to the stored program code in the storage medium.
  • the various modules or steps of the present invention described above can be used with general calculations.
  • the devices are implemented, they may be centralized on a single computing device, or distributed over a network of multiple computing devices, optionally they may be implemented in program code executable by the computing device, such that they may be stored Executed by the computing device in a storage device, and in some cases, the steps shown or described may be performed in an order different than that herein, or separately fabricated into individual integrated circuit modules, or Multiple modules or steps are made into a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the method and apparatus for configuring channel measurement and the method and device for channel information feedback provided by the embodiments of the present invention have the following beneficial effects: the support base station is selected between multiple virtualization modes.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé et une application de configuration de mesurage de canal, et un procédé et un appareil de retour d'informations de canal. Dans le procédé selon l'invention, une station de base : configure un ensemble de ressources de fréquence pilote de mesurage R pour un terminal, l'ensemble de ressources de fréquence pilote de mesurage R comprenant k fréquences pilotes correspondant respectivement à Nk ports, k=1...K, la plage de valeurs Nk étant {1,2,4, 8}, et k étant un entier positif supérieur à 1; et configure un mode de retour de CSI d'indice de ressources de fréquence pilote de mesurage de canal pour le terminal. L'invention résout le problème selon lequel une station de base ne peut pas utiliser une pluralité de procédés de virtualisation de port différents, et permet ainsi à la station de base de choisir entre une pluralité de procédés de virtualisation.
PCT/CN2016/104253 2015-11-06 2016-11-01 Procédé et application de configuration de mesurage de canal, et procédé et appareil de renvoi d'informations de canal WO2017076280A1 (fr)

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