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WO2017101651A1 - Procédé et dispositif détermination d'instance de rapport d'informations d'état de canal - Google Patents

Procédé et dispositif détermination d'instance de rapport d'informations d'état de canal Download PDF

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Publication number
WO2017101651A1
WO2017101651A1 PCT/CN2016/107105 CN2016107105W WO2017101651A1 WO 2017101651 A1 WO2017101651 A1 WO 2017101651A1 CN 2016107105 W CN2016107105 W CN 2016107105W WO 2017101651 A1 WO2017101651 A1 WO 2017101651A1
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WIPO (PCT)
Prior art keywords
feedback
equal
pilots
base station
index
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PCT/CN2016/107105
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English (en)
Chinese (zh)
Inventor
陈艺戬
李儒岳
吴昊
鲁照华
蔡剑兴
肖华华
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ZTE Corp
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ZTE Corp
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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
    • 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
    • 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
    • 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
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
    • H04L1/0618—Space-time coding
    • H04L1/0675—Space-time coding characterised by the signaling
    • H04L1/0693—Partial feedback, e.g. partial channel state information [CSI]

Definitions

  • the present invention relates to the field of communications, and in particular, to a method and apparatus for determining a channel state information report instance.
  • 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 Multi-input Multi-output
  • channel feature vector information is used for precoding directly; for multi-user multi-input multi-output (Multi-User Multi-input Multi) -output, abbreviated as MU-MIMO, requires relatively accurate channel information.
  • the following describes some basic contents related to the acquisition of the channel state information (CSI, including the channel part and the interference part) and the terminal side CSI quantization feedback.
  • CSI channel state information
  • TDD time division duplex
  • FDD Frequency Division Dual
  • the FDD system currently has the following typical CSI feedback scenarios and corresponding feedback technologies; if considering the supported antenna dimensions are small, less than or equal to 8 antennas, channel measurement pilots and CSI
  • the feedback overhead is generally considered to be acceptable. For the sake of simplicity, full-dimensional measurement and CSI feedback are used.
  • the feedback method is Implicit feedback, first, the base station sends a set of channel measurement pilots to the terminal, and the terminal performs channel measurement and CSI quantization feedback based on the pilot.
  • the measurement pilot resource can be configured with a 2-port channel measurement pilot resource index (channel state information Resource).
  • CSI-RS Channel Quality indication
  • BI beam index
  • BI beam index
  • CSI-RS Physical Broadcast Reference Signal
  • the terminal detects these pilots and estimates the channel matrix for channel information quantization; generally, the content of the quantized CSI mainly includes (RI/PMI/CQI): channel quality indication (referred to as channel quality indication, short for It is a CQI), a Precoding Matrix Indicator (PMI) and a Rank Indicator (RI).
  • CQI is an indicator for measuring the quality of a downlink channel.
  • CQI can be understood as a signal-to-noise ratio. (Signal to Interference plus Noise Ratio, SINR for short) is a kind of quantization.
  • CQI is represented by an integer value of 0-15, which represents different CQI levels, and different CQIs correspond to their respective modulation modes.
  • MCS Modulation and Coding Scheme
  • the RI is used to describe the number of spatially independent channels, corresponding to the rank of the channel response matrix.
  • the UE needs to feed back RI information, but not in other modes.
  • the RI information needs to be fed back.
  • 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 best match among the agreed codebooks.
  • 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 Physical Uplink Shared Channel (PUSCH) (as shown in Table 1 below), and includes the following modes:
  • x in Mode xy in Table 1 is 1, 2, and 3 represent the feedback characteristics of three CQIs: wideband CQI, subband CQI selected by UE, subband CQI of high layer configuration; values of y include 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 Physical Uplink Control Channel (PUCCH). As shown in Table 2 below, it includes the following modes:
  • Mode 1-1 The value of 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 content includes RI feedback, wideband (WB, wideband) PMI i feedback, wideband CQI feedback; divided into two reporting types; the first reporting type is RI, the second reporting type is broadband (WB, wideband) PMI i feedback and broadband CQI feedback; dual PMI Mode 1-1 submode 1: One codeword requires two PMIs, i1 and i2, together, i1 is broadband feedback long-term feedback, and i2 can be sub-band short-time feedback; this sub-mode contains 2 reports. Reporting type: RI/PMI i1 joint
  • Mode 1-1 sub-mode 2 in dual PMI feedback content includes RI feedback, wideband (WB, wideband) PMI i1, broadband PMI i2 feedback, wideband CQI feedback; as shown in the following figure; divided into two reporting types; The first reporting type is 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. In one case, it is not necessary to introduce a Precoder Type Indicator (PTI), and another case introduces a PTI. Indicating that the precoding type of the feedback can be flexibly switched in the time domain;
  • PTI Precoder Type Indicator
  • 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 channel measurement pilot resource index, often referred to as BI) to the base station the terminal reports RI/PMI/CQI based on the selected channel measurement pilot; this way can select the most The best CSI-RS resource is measured (which can be understood as part of the channel information feedback).
  • the base station can obtain the total channel information through CRI and traditional CSI feedback.
  • FIG. 1 is a schematic diagram of CSI feedback based on measurement pilot selection in the prior art.
  • a typical application is a vertical sector virtualization technology.
  • a base station uses different precoding to generate beams in different directions. Covering different vertical directions; the UE selects the best precoding pilot (vertical beam), and then performs horizontal dimension CSI feedback based on the precoding 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, combined with 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.
  • Beam/pilot resource selection and CSI measurement feedback a simple method is to limit N k 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. For example, with an antenna topology as follows, it is difficult to support the choice between two virtualization modes in the existing way.
  • the left side of Figure 2 shows a 16Tx system (4 rows and 2 columns), and the virtualization matrix P1 is an 8-dimensional matrix.
  • the set of pilot drop dimension ports is 4 dimensions, using two such matrices P1(a), and P1(b) to generate two sets of such pilots; for terminal measurement; the right side represents the same 4 rows and 2 columns
  • the virtualization matrix P2 is a 4-dimensional matrix.
  • each set of pilot-down dimension ports is 8 dimensions, and four such matrices P2(a), P2(b), P2(c), and P2 are used.
  • d) Generate 4 sets of such pilots; if the limit Nk must be equal, the gain of dynamic selection switching between the above two virtualization modes is lost.
  • an embodiment of the present invention provides a method and an apparatus for determining a channel state information report instance.
  • a method for determining a channel state information report instance including: receiving configuration signaling sent by a base station, and determining a measurement pilot resource set R according to the configuration instruction, where
  • the measurement pilot resource set R includes: K sets of pilots, K is greater than 1 and is a positive integer, and the K sets of pilots include at least: pilots having an antenna port number of 1 and pilots having a number of antenna ports greater than 1;
  • the number of antenna ports Ns corresponding to the S set of pilots determines that the number N of the report instances corresponding to the CSI information fed back on the physical uplink control channel PUCCH is determined by at least one of the following manners: Mode 1: When Ns is equal to 1 When N is m, when Ns is greater than 1, N is m+1; and mode
  • the first set is a subset of the second set, where the first set is a set of m report instances when Ns is equal to 1, and the second set is when Ns is greater than 1.
  • the method further includes: agreeing with the base station to obtain the rank indicator RI in the CSI information. How to obtain the precoding matrix indicator PMI.
  • the RI and the PMI are obtained by at least one of the following ways: the base station is agreed to report a fixed RI and/or PMI; the base station agrees that the RI index is equal to a Beam Index (BI Index) index, and/or agrees with the base station.
  • the PMI index is equal to the BI index; the base station agrees that the RI index is equal to the channel quality indication information CQI index, and/or the base station agrees that the PMI index is equal to the CQI index.
  • the method further includes: if the Ns corresponding to the selected S set of pilots is equal to 1, the CQI information is fed back when the feedback position of the feedback RI is greater than 1 when the Ns is greater than 1. And/or feedback channel measurement pilot resource index CRI information at a feedback position of the feedback RI when Ns is greater than 1; and/or feedback of feedback RI when Ns is greater than 1. In the position, give up feedback.
  • the rank r when the rank r does not belong to the set Q, determining a feedback overhead of the PMI according to the size of the codebook C, and feeding back the feedback overhead to the base station; when the rank r belongs to
  • the PMI of the pre-agreed overhead size O bit is fed back to the base station, where O is an integer greater than or equal to 1, and the set Q is a subset of A.
  • the value of m includes: 1, 2.
  • a device for determining a channel state information report including: a receiving module, configured to receive configuration signaling sent by a base station, and determine a measurement pilot resource according to the configuration instruction.
  • the set R where the measurement pilot resource set R includes: K sets of pilots, K is greater than 1 and is a positive integer, and the K sets of pilots include at least: a set of pilots with a number of antenna ports of one and one a pilot with a number of antenna ports greater than 1; a selection module configured to select a Sth pilot in the K sets of pilots; a feedback module configured to feed back the indication information of the Sth pilot and based on the S
  • the CSI information of the pilot measurement, the determining module is configured to determine, according to the number Ns of antenna ports corresponding to the S set of pilots, the number N of report instances corresponding to the CSI information fed back on the physical uplink control channel PUCCH, N is determined by at least one of the following methods: Mode 1: When Ns is equal to
  • the determining module is further configured to: when the method 1 determines the N, the first set is a subset of the second set, where the first set is a set of m report instances when Ns is equal to 1.
  • the second set is a set of m+1 report instances when Ns is greater than one.
  • the apparatus further includes: an appointment module, configured to acquire, by the base station, a rank indicator RI and a precoding matrix indication in the CSI information when determining the N by using mode 2, and the Ns is equal to 1. How to get PMI.
  • an appointment module configured to acquire, by the base station, a rank indicator RI and a precoding matrix indication in the CSI information when determining the N by using mode 2, and the Ns is equal to 1. How to get PMI.
  • the appointment module is configured to agree to report a fixed RI and/or PMI with the base station; further set to agree with the base station that the RI index is equal to the BI index, and/or the base station agrees that the PMI index is equal to the BI index; The base station agrees that the RI index is equal to the channel quality indication information CQI index, and/or the base station agrees that the PMI index is equal to the CQI index.
  • the feedback module includes: a first feedback unit, configured to: when N is determined by adopting mode 2 and Ns corresponding to the selected S set pilot is equal to 1, feedback position of feedback RI when Ns is greater than 1. Up, feedback CQI information; the second feedback unit is configured to determine, when the mode 2 is used to determine the N, and the selected S-set pilot corresponding to Ns is equal to 1, when the Ns is greater than 1, the feedback RI feedback position, the feedback channel The pilot resource index CRI information is measured; the third feedback unit is configured to: when the N is determined by adopting mode 2 and the Ns corresponding to the selected S set of pilots is equal to 1, when the Ns is greater than 1, the feedback position of the feedback RI is Give up feedback.
  • a first feedback unit configured to: when N is determined by adopting mode 2 and Ns corresponding to the selected S set pilot is equal to 1, feedback position of feedback RI when Ns is greater than 1. Up, feedback CQI information; the second feedback unit is configured to determine, when the mode 2 is used to determine the N
  • a computer storage medium is further provided, and the computer storage medium may store an execution instruction for performing the quantization method of the channel state information in the foregoing embodiment.
  • the number of report instances is determined according to the number Ns of antenna ports corresponding to the selected S sets of pilots, so that the problem of reporting instance confusion does not occur, and the related art is solved.
  • the solution also avoids the situation that the feedback mode on the terminal side is confusing.
  • FIG. 1 is a schematic diagram of CSI feedback based on measurement pilot selection in the prior art
  • FIG. 2 is a schematic diagram of two port virtualization and beam sending modes in the same antenna topology in the prior art
  • FIG. 3 is a flowchart of a method for determining an example of a channel state information report according to an embodiment of the present invention
  • FIG. 4 is a structural block diagram of a determining apparatus of a channel state information reporting example according to an embodiment of the present invention.
  • FIG. 5 is a block diagram showing another structure of a determining apparatus of a channel state information reporting example according to an embodiment of the present invention.
  • FIG. 6 is a structural block diagram of a feedback module 44 of a determining apparatus of a channel state information reporting example according to an embodiment of the present invention
  • FIG. 6 is a flowchart of a method for quantifying channel state information according to an embodiment of the present invention.
  • FIG. 7 is a flow chart of quantization of signaling channel state information according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of candidate patterns of CSI-RS resource locations according to a preferred embodiment 1 of the present invention.
  • FIG. 3 is a flowchart of a method for determining a channel state information report instance according to an embodiment of the present invention. step:
  • Step S302 Receive configuration signaling sent by the base station, and determine a measurement pilot resource set R according to the configuration command.
  • the measurement pilot resource set R includes: K sets of pilots, K is greater than 1 and is a positive integer, and the K sets of pilots include at least: a set of pilot ports having a number of antenna ports of 1 and a set of antenna ports greater than 1 pilot;
  • Step S304 selecting the Sth set of pilots in the K sets of pilots, and feeding back the indication information of the Sth set of pilots and the CSI information based on the Sth set of pilot measurements, where S belongs to the set [1, K] ;
  • Step S306 Determine, according to the number Ns of antenna ports corresponding to the S set of pilots, the number N of reports instances corresponding to the CSI information on the PUCCH, where N is determined by at least one of the following manners: Mode 1: When Ns is equal to 1, N is When m, Ns is greater than 1, N is m+1; and mode 2: when Ns is greater than or equal to 1, N is m, where m is a positive integer.
  • the terminal can determine the number of report instances according to the number Ns of antenna ports corresponding to the selected S sets of pilots, and thus the problem of reporting instance confusion does not occur on the terminal side, and the related art is solved.
  • the codebook corresponding to the partial RI includes multiple codewords, and the partial RI value
  • the corresponding codebook contains one codeword, which means that some RI reports require PMI feedback and some RI reports do not require PMI feedback.
  • the embodiment of the present invention further provides the following technical solutions:
  • the first set is a subset of the second set, wherein the first set is a set of m report instances when Ns is equal to 1, and the second set is Ns greater than 1 m.
  • the method further includes: agreeing with the foregoing base station to obtain the rank indicator RI and the precoding matrix in the CSI information. How to get the indicator PMI.
  • the RI and the PMI are obtained by at least one of the following methods: a fixed RI and/or PMI is reported to be agreed with the base station; and the base station agrees that the RI index is equal to the BI index (it is understood that the RI value is S), and / Or agreeing with the base station that the PMI index is equal to the BI index; agreeing with the base station that the RI index is equal to the channel quality indication information CQI index, and/or agreeing with the base station that the PMI index is equal to the CQI index.
  • the method further includes: if the Ns corresponding to the selected S sets of pilots is equal to 1, the CQI information is fed back at the feedback position of the feedback RI when the Ns is greater than 1; and/or at the Ns When the feedback RI is greater than 1, the feedback channel measures the pilot resource index CRI information; and/or the feedback position of the feedback RI when Ns is greater than 1, the feedback is discarded.
  • the codebook C when the value of r belongs to the set Q, the number of codewords included in C(r) is one; and Q is a subset of the range of 1, 2, ... Xr of r.
  • the terminal uses the codebook C to quantize the channel information.
  • the terminal determines the feedback overhead of the PMI according to the size of the codebook, and feeds back the feedback.
  • the terminal feeds back a PMI with a predetermined overhead size O bit to the base station, where O is an integer greater than or equal to 1.
  • a device for determining a channel state information report is provided, which is used to implement the above-mentioned embodiments and preferred embodiments.
  • the descriptions of the modules involved in the device are not described again. Description.
  • 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.
  • 4 is a structural block diagram of a determining apparatus of a channel state information reporting example according to an embodiment of the present invention. As shown in Figure 4, the device comprises:
  • the receiving module 40 is configured to receive configuration signaling sent by the base station, and determine a measurement pilot resource set R according to the configuration command, where the measurement pilot resource set R includes: K sets of pilots, where K is greater than 1 and is positive Integer, the above K sets of pilots include at least: a set of pilots with an antenna port number of 1 and a set of pilots with a number of antenna ports greater than one;
  • the selection module 42 is connected to the receiving module 40, and is configured to select the Sth set of pilots in the K sets of pilots;
  • the feedback module 44 is connected to the selection module 42 and configured to feed back the indication information of the S th set pilot and the CSI information based on the S set pilot measurement;
  • the determining module 46 is connected to the feedback module 44, and is configured to determine, according to the number Ns of antenna ports corresponding to the S set of pilots, the number N of report instances corresponding to the CSI information fed back on the physical uplink control channel PUCCH, at least by the following manner One determines the above N: mode one: when Ns is equal to 1, N is m, and when Ns is greater than 1, N is m+1; mode 2: when Ns is greater than or equal to 1, N is m, where m is a positive integer.
  • the terminal can determine the number of report instances according to the number Ns of antenna ports corresponding to the selected S sets of pilots, and thus the problem of reporting instance confusion does not occur on the terminal side, and the related technology is solved.
  • the two solutions to solve the report instance also avoid the confusion of the feedback mode on the terminal side.
  • the determining module 46 is further configured to: when determining the N by using the mode 1, the first set is a subset of the second set, wherein the first set is m reporting instances when Ns is equal to 1.
  • the set, the second set is a set of m+1 report instances when Ns is greater than one.
  • the foregoing apparatus further includes: an appointment module when determining the N by using mode 2, and Ns is equal to 1. 48. Connect with the feedback module 44, and set to obtain the acquisition manner of the rank indicator RI and the precoding matrix indicator PMI in the foregoing CSI information.
  • the appointment module 48 is configured to schedule a fixed RI and/or PMI with the base station; it is further configured to agree with the base station that the RI index is equal to the BI index, and/or the base station agrees that the PMI index is equal to the BI index; It is set to agree with the base station that the RI index is equal to the channel quality indication information CQI index, and/or the base station agrees that the PMI index is equal to the CQI index.
  • FIG. 6 is a structural block diagram of a feedback module 44 of a determining apparatus of a channel state information reporting example according to an embodiment of the present invention.
  • the feedback module 44 is configured to: when the method 2 determines the N, the first feedback unit 440 is configured to When the Ns corresponding to the selected S sets of pilots is equal to 1, the CQI information is fed back at the feedback position of the feedback RI when Ns is greater than 1, and the second feedback unit 442 is set to the Nth of the selected S sets of pilots equal to 1 At the feedback position of the feedback RI when Ns is greater than 1, the feedback channel measures the pilot resource index CRI information; and the third feedback unit 444 sets the Ns corresponding to the selected S set of pilots to be equal to 1, when the Ns is greater than 1. When feedback RI feedback position, give up feedback.
  • FIG. 7 is a flowchart of quantifying channel state information according to an embodiment of the present invention. As shown in FIG. 7, the method includes the following steps:
  • Step S704 using the codebook C to quantize the channel state information.
  • the feedback overhead of the PMI is determined according to the size of the codebook C, and the feedback overhead is fed back to the base station; when the rank r belongs to the set Q And feeding back the PMI of the pre-agreed overhead size O bit to the base station, where O is an integer greater than or equal to 1, and the set Q is a subset of A.
  • the base station configures K sets of channel measurement pilots (CSI-RSs) to the terminal; the base station sends the above-mentioned K sets of pilots in the resource locations indicated in the configuration information; the base station can configure one or more sets of pilots to the terminal, and the configuration information is
  • the transmission may be through higher layer signaling; including periodic information of each set of pilots, sequence information, time-frequency resource location pattern in the subframe, subframe offset information, etc.;
  • FIG. 8 is a CSI according to a preferred embodiment 1 of the present invention. - Schematic diagram of the candidate pattern of the RS resource location, as shown in FIG.
  • the same subframe supports up to five 8-port patterns #0, #1, #2, #3, #4, #5, if 4 ports are configured
  • the pattern can be configured in 10
  • the 2-port pattern can be configured in 20, wherein the DMRS (Demodulation Reference Signal) in FIG. 8 is a demodulation reference signal.
  • DMRS Demodulation Reference Signal
  • 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 configured period is 10ms and above, and the number of pilot sets K that can be configured will be 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; the terminal detects configuration signaling sent by the base station, and acquires pilot-related locations.
  • the information and the sequence information can then detect the received pilot signal at the corresponding position; using the received pilot signal and the learned pilot transmission sequence information, channel estimation can be performed to obtain the channel matrix H.
  • the number (as shown in Table 5 and Table 6 below), the time range used here is the time between two S-information reports;
  • the terminal performs channel information measurement based on the estimated channel information of the plurality of pilots, and selects one set, the Sth set, the information of the feedback S, and the CSI information corresponding to the S set of pilots to the base station; if preferred,
  • the feedback mode and the reporting instance are configured according to the requirement of Ns>1. At this time, the following situation occurs (as shown in Table 7 below). :
  • the RI/PMI can be the smallest RI/PMI index, or the RI/PMI can agree to the value equal to k; or the RI/PMI can be agreed to be equal to the value of the CQI, as shown in Table 8 and Table 9 below:
  • the terminal performs channel information measurement based on the estimated channel information of the plurality of pilots, and selects one set, the Sth set, the information of the feedback S, and the CSI information corresponding to the S set of pilots to the base station; if preferred,
  • the feedback mode and the reporting instance are configured according to the requirement of Ns>1. At this time, the following situations occur (as shown in Table 14 below). ):
  • the code corresponding to the partial RI may appear.
  • the codeword included in the code contains a plurality of codewords, and the codebook corresponding to the partial RI value contains one codeword, as shown in Table 17 below.
  • a storage medium is further provided, wherein the software includes the above-mentioned software, including but not limited to: an optical disk, a floppy disk, a hard disk, an erasable memory, and the like.
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the technical solution of the embodiment of the present invention determines the number of report instances according to the number Ns of antenna ports corresponding to the selected S sets of pilots, so that the problem of reporting instance confusion does not occur, and the related art is solved.

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  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé et un dispositif permettant de déterminer une instance de rapport d'informations d'état de canal, le procédé consistant à : recevoir un signal de configuration émis par une station de base, et déterminer un ensemble de ressources de fréquence pilote de mesure R en fonction du signal de configuration, l'ensemble de ressources de fréquence pilote de mesure R comprenant : K ensembles de fréquences pilotes, K étant un entier positif supérieur à 1, et les K ensembles de fréquences pilotes comprenant au moins : une fréquence pilote comportant un port d'antenne et une fréquence pilote à plusieurs ports d'antenne ; sélectionner le Sième ensemble de fréquences pilotes dans les K ensembles de fréquences pilotes, et renvoyer les informations d'indication du Sième ensemble de fréquences pilotes et des informations CSI mesurées sur la base du Sième ensemble de fréquences pilotes, S appartenant à un ensemble [1, K] ; déterminer le nombre N des instances de création de rapport correspondant aux informations CSI renvoyées sur un canal PUCCH en fonction du nombre N de ports d'antenne correspondant à l'ensemble Sième de fréquences pilotes, N étant déterminé au moyen d'au moins l'un des modes suivants : mode I, lorsque N est égal à 1, N équivaut à m ; lorsque N est supérieur à 1, N équivaut à m +1 ; mode II, lorsque N est supérieur ou égal à 1, N équivaut à m, qui est un nombre entier positif.
PCT/CN2016/107105 2015-12-18 2016-11-24 Procédé et dispositif détermination d'instance de rapport d'informations d'état de canal Ceased WO2017101651A1 (fr)

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