WO2015101109A1 - 一种信道状态信息测量、参考信号的发送方法和装置 - Google Patents

一种信道状态信息测量、参考信号的发送方法和装置 Download PDF

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Publication number
WO2015101109A1
WO2015101109A1 PCT/CN2014/090811 CN2014090811W WO2015101109A1 WO 2015101109 A1 WO2015101109 A1 WO 2015101109A1 CN 2014090811 W CN2014090811 W CN 2014090811W WO 2015101109 A1 WO2015101109 A1 WO 2015101109A1
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reference signal
precoding matrix
ports
signal ports
group
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PCT/CN2014/090811
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English (en)
French (fr)
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刘建琴
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华为技术有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • 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
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • 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
    • 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
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0204—Channel estimation of multiple channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a channel state information measurement, a method and a device for transmitting a reference signal.
  • a transmitting end and a receiving end use a plurality of antennas in a spatial multiplexing manner to obtain a higher rate.
  • an enhanced technology is: the receiving end feeds back channel state information to the transmitting end, and the transmitting end uses some precoding techniques for transmitting signals according to the obtained channel state information, thereby greatly improving transmission performance.
  • the transmitting end sends a predefined pilot signal, where the number of ports of the pilot signal is equal to the number of ports for data transmission, and the receiving end performs channel state information (CSI) based on the predefined pilot signal sent by the transmitting end.
  • CSI channel state information
  • the CSI includes: a Precoding Matrix Indicator (PMI), a Channel Quality Indicator (CQI), and a Rank Indicator (RI), and a Precoding Matrix Type Indicator (Precoding Type) Indicator, PTI) and so on.
  • the Long Term Evolution Advanced (LTE-A) system supports up to 8 antennas on the basis of the existing LTE system, and is coded in the code.
  • This feedback aspect proposes some feedback enhancement techniques, mainly to enhance the feedback accuracy of the codebook.
  • the user equipment (UE) feeds back two PMIs to the base station, namely PMI1 and PMI2, respectively, where PMI1 corresponds to a codeword W1, PMI2 in one codebook C1. Corresponds to the code word W2 in another codebook C2.
  • the base station has the same information of C1 and C2 as the user equipment end. After receiving PMI1 and PMI2, the corresponding code words W1 and W2 are found from the corresponding codebooks C1 and C2, and a code corresponding to the virtual codeword W is obtained. this.
  • the subcodebooks corresponding to different Ranks can be defined as follows (here, only Rank1 and Rank2 are taken as examples):
  • W W1*W2
  • W1 is a block diagonal matrix
  • X is 32 4-antenna discrete Fourier Transforming (DFT, Discrete Fourier Transform) beam space
  • W1 is a certain beam group formed by four adjacent beams in 32 beam spaces
  • W2 Select a specific beam in the beam group represented by W and perform phase rotation in two polarization directions.
  • the antenna scale will expand from 8 to 16, 32, 64 and even hundreds. As the antenna size increases, the corresponding CSI measurement and feedback complexity will increase accordingly. If the previous CSI measurement pilot design method is still used, the measurement pilot overhead will linearly increase exponentially as the antenna size increases.
  • the CSI-RS of each port occupies 1 or 2 resource units, and when the antenna size is increased to At dozens or even hundreds of times, the number of resource units occupied by CSI-RSs within each PRB will be particularly large, resulting in too few effective resource units actually available for data transmission.
  • Embodiments of the present invention provide a channel state information measurement, a method and a device for transmitting a reference signal, which effectively improve resource utilization of data transmission.
  • a first aspect of the embodiments of the present invention provides a channel state information measurement method, where the method includes:
  • the channel state information CSI measurement is performed on the reference signal of the configured N reference signal ports, and the CSI measurement is performed on the reference signals of each of the M groups of reference signal ports to obtain M first pre-preparations.
  • a channel quality indicator CQI is obtained according to the second precoding matrix.
  • the method further includes:
  • the reference signals of the configured N reference signal ports are sent by the sending device in the same subframe.
  • the number of reference signal ports of each group of the M group reference signal ports is a prime number of the total number of antenna ports.
  • a second aspect of the embodiments of the present invention provides a method for sending a reference signal, where the method includes:
  • the reference signal of the configured N reference signal ports is used by the receiving device to perform channel state information CSI measurement on the reference signals of the configured N reference signal ports, including: respectively, in the M group reference signal ports.
  • a channel quality indicator CQI is obtained according to the second precoding matrix.
  • the method further includes:
  • the reference signals of the configured N reference signal ports are transmitted on the same subframe.
  • the number of reference signal ports of each group of the M group reference signal ports is the total number of antenna ports. A prime number.
  • a third aspect of the embodiments of the present invention provides a channel state information measuring apparatus, where the apparatus includes: a transceiver and a processor respectively connected to a bus;
  • the transceiver is configured to receive reference signal configuration information sent by the sending device and a reference signal of the configured N reference signal ports;
  • the channel state information CSI measurement is performed on the reference signal of the configured N reference signal ports, and the CSI measurement is performed on the reference signals of each of the M groups of reference signal ports to obtain M first pre-preparations.
  • the transceiver is further configured to feed back, to the sending device, a precoding matrix indicator PMI and a channel quality indicator CQI corresponding to the second precoding matrix.
  • the transceiver is further configured to receive the The reference signal of the configured N reference signal ports sent by the transmitting device on the same subframe.
  • the M group reference signal port The number of reference signal ports for each group of ports is a prime number of the total number of antenna ports.
  • a fourth aspect of the embodiments of the present invention provides a device for transmitting a reference signal, where the sending device includes: a processor and a transceiver respectively connected to the bus,
  • the transceiver is configured to send reference signal configuration information of the N reference signal ports configured by the processor, and send the configured N according to the configured N reference signal ports and the reference signal configuration information.
  • the transceiver is further configured to receive a precoding matrix indicator PMI and a channel quality indicator CQI corresponding to the second precoding matrix fed back by the receiving device;
  • the processor is further configured to perform a precoding operation according to the precoding matrix indicator PMI and the channel quality indicator CQI corresponding to the second precoding matrix received by the transceiver.
  • the transceiver is specifically used to The reference signals of the configured N reference signal ports are transmitted on the same subframe.
  • the number of reference signal ports in each group of the M group reference signal ports is a prime number of the total number of antenna ports.
  • a fifth aspect of the embodiments of the present invention provides a channel state information measurement method, where the method includes:
  • the channel state information measurement is performed according to the reference signal of the N reference signal ports, and the CSI measurement is performed on the reference signals of each of the M groups of reference signal ports to obtain the reference signals of each group.
  • a weighting value corresponding to the port and obtaining a first precoding matrix and/or a second precoding matrix according to the weighting value; obtaining a third precoding matrix according to the first precoding matrix and/or the second precoding matrix; Obtaining a channel quality indicator CQI according to the third precoding matrix;
  • the weight values corresponding to any two sets of reference signal ports differ by one phase term; and/or in the second precoding matrix, the any two sets of reference signals The weight values corresponding to the ports differ by one phase term.
  • the method further includes:
  • the N is less than or equal to the total number of antenna ports.
  • the phase term is Form of which An angle between [0, 2 ⁇ ].
  • Obtaining a third precoding matrix according to the first precoding matrix and the second precoding matrix including:
  • W is the third precoding matrix
  • W1 is the first precoding matrix
  • the i th diagonal block in W1 corresponds to the weighting value corresponding to the i th group reference signal port, where the value of i is 1 to M
  • W2 is the second precoding matrix
  • the obtaining the third precoding matrix according to the first precoding matrix and the second precoding matrix comprises: expressing the third precoding matrix as:
  • W is the third precoding matrix
  • W1 is the first precoding matrix
  • W2 is the second precoding matrix
  • the i th row in W2 corresponds to the weighting value corresponding to the i th group reference signal port.
  • i is a value from 1 to M; The phase difference between the weighting value corresponding to the (i+1)th reference signal port and the weighting value corresponding to the first group of reference signal ports.
  • a sixth aspect of the embodiments of the present invention provides a method for sending a reference signal, where the method includes:
  • the reference signal is used by the receiving device to perform channel state information CSI measurement based on the reference signals of the configured N reference signal ports, to obtain a third precoding matrix determined according to the first precoding matrix and/or the second precoding matrix. Obtaining, according to the third precoding matrix, a channel quality indicator CQI;
  • the receiving device performs channel state information CSI measurement based on the reference signals of the configured N reference signal ports, including: performing CSI measurement on each of the reference signals of each group of the M group reference signal ports, and obtaining a Deriving a weighting value corresponding to each group of reference signal ports, and obtaining the first precoding matrix and/or the second precoding matrix according to the weighting value;
  • the weighting values corresponding to the any two sets of reference signal ports are different by one phase term; and/or in the second precoding matrix, the any two sets of reference signal ports The corresponding weight values differ by one phase term.
  • the method further includes:
  • the N is less than or equal to the total number of antenna ports.
  • phase term is Form of which An angle between [0, 2 ⁇ ].
  • the third precoding matrix is expressed as:
  • W is the third precoding matrix
  • W1 is the first precoding matrix
  • the i th diagonal block in W1 corresponds to the weighting value corresponding to the i th group reference signal port, where the value of i is 1 to M
  • W2 is the second precoding matrix
  • the third precoding matrix is expressed as:
  • W is the third precoding matrix
  • W1 is the first precoding matrix
  • W2 is the second precoding matrix
  • the i th row in W2 corresponds to the weighting value corresponding to the i th group reference signal port.
  • i is a value from 1 to M; The phase difference between the weighting value corresponding to the (i+1)th reference signal port and the weighting value corresponding to the first group of reference signal ports.
  • a seventh aspect of the embodiments of the present invention provides a channel state information measuring apparatus, where the apparatus includes: a transceiver and a processor respectively connected to a bus;
  • the transceiver is configured to receive reference signal configuration information and configured N sent by the sending device Reference signal of the reference signal port;
  • the channel state information measurement is performed according to the reference signal of the N reference signal ports, and the CSI measurement is performed on the reference signals of each of the M groups of reference signal ports to obtain the reference signals of each group.
  • a weighting value corresponding to the port and obtaining a first precoding matrix and/or a second precoding matrix according to the weighting value; obtaining a third precoding matrix according to the first precoding matrix and/or the second precoding matrix; Obtaining a channel quality indicator CQI according to the third precoding matrix;
  • the weighting values corresponding to any two sets of reference signal ports differ by one phase term; and/or, in the second precoding matrix, the any two sets of reference signals The weight values corresponding to the ports differ by one phase term.
  • the transceiver is further configured to feed back, to the sending device, a precoding matrix indicator PMI and a channel quality indicator CQI corresponding to the third precoding matrix obtained by the processor.
  • the N is less than or equal to the total number of antenna ports.
  • phase term is Form of which An angle between [0, 2 ⁇ ].
  • the processor is specifically configured to represent the third precoding matrix as:
  • W is the third precoding matrix
  • W1 is the first precoding matrix
  • the i th diagonal block in W1 corresponds to the weighting value corresponding to the i th group reference signal port, where the value of i is 1 to M
  • W2 is the second precoding matrix
  • the processor is specifically configured to represent the third precoding matrix as:
  • W is the third precoding matrix
  • W1 is the first precoding matrix
  • W2 is the second precoding matrix
  • the i th row in W2 corresponds to the weighting value corresponding to the i th group reference signal port.
  • i is a value from 1 to M; The phase difference between the weighting value corresponding to the (i+1)th reference signal port and the weighting value corresponding to the first group of reference signal ports.
  • An eighth aspect of the embodiments of the present invention provides a device for transmitting a reference signal, where the device includes: a transceiver and a processor respectively connected to the bus,
  • the transceiver is configured to send reference signal configuration information of the N reference signals configured by the processor, and send a reference signal according to the configured N reference signal ports and the reference signal configuration information;
  • the reference signal is used by the receiving device to perform channel state information CSI measurement based on the reference signals of the configured N reference signal ports, to obtain a third precoding matrix determined according to the first precoding matrix and/or the second precoding matrix. Obtaining, according to the third precoding matrix, a channel quality indicator CQI;
  • the receiving device performs channel state information CSI measurement based on the reference signals of the configured N reference signal ports, including: performing CSI measurement on each of the reference signals of each group of the M group reference signal ports, and obtaining a Deriving a weighting value corresponding to each group of reference signal ports, and obtaining the first precoding matrix and/or the second precoding matrix according to the weighting value;
  • the weighting values corresponding to the any two sets of reference signal ports are different by one phase term; and/or, in the second precoding matrix, the weighting of the any two sets of reference signal ports The values differ by one phase term.
  • the transceiver is further configured to receive a precoding matrix indicator PMI and a channel quality indicator CQI corresponding to the third precoding matrix fed back by the receiving device;
  • the processor is further configured to perform a precoding operation according to the PMI and the CQI received by the transceiver.
  • the N is less than or equal to the total number of antenna ports.
  • phase term is Form of which An angle between [0, 2 ⁇ ].
  • the third precoding matrix is expressed as:
  • W is the third precoding matrix
  • W1 is the first precoding matrix
  • the i th diagonal block in W1 corresponds to the weight value of the i th group reference signal port, where the value of i is 1 to M
  • W2 is the second precoding matrix
  • the third precoding matrix is expressed as:
  • W is the third precoding matrix
  • W1 is the first precoding matrix
  • W2 is the second precoding matrix
  • the i th row in W2 corresponds to the weighting value corresponding to the i th group reference signal port.
  • i is a value from 1 to M; The phase difference between the weighting value corresponding to the (i+1)th reference signal port and the weighting value corresponding to the first group of reference signal ports.
  • Embodiments of the present invention provide a channel state information measurement method and apparatus, which are designed by using CSI measurement pilot correlation, which greatly reduces the overhead of measuring pilots, especially as the antenna size increases, and the data is effectively improved. Resource utilization of the transfer.
  • FIG. 1 is a schematic flow chart of a channel state information measurement method according to Embodiment 1 of the present invention.
  • FIG. 2 is a schematic flow chart of a method for transmitting a reference signal according to Embodiment 2 of the present invention
  • FIG. 3 is a schematic diagram of an antenna array according to Embodiment 3 of the present invention.
  • FIG. 4 is a schematic diagram of another antenna array according to Embodiment 3 of the present invention.
  • FIG. 5 is a schematic diagram of a channel state information measuring apparatus according to Embodiment 4 of the present invention.
  • FIG. 6 is a schematic diagram of a device for transmitting a reference signal according to Embodiment 5 of the present invention.
  • FIG. 7 is a schematic flow chart of a channel state information measurement method according to Embodiment 6 of the present invention.
  • FIG. 8 is a schematic flow chart of a method for transmitting a reference signal according to Embodiment 7 of the present invention.
  • Embodiment 8 of the present invention is a schematic diagram of an antenna array divided into four equal antenna groups in Embodiment 8 of the present invention.
  • FIG. 10 is a schematic diagram showing precoding matrix information of the first two antenna groups and precoding matrix information of the latter two antenna groups in Embodiment 8 of the present invention.
  • FIG. 11 is a schematic diagram showing a phase difference when phase difference information is reflected in W1 according to Embodiment 8 of the present invention.
  • Figure 12 is a schematic diagram showing the phase difference when the phase difference information is reflected in W2 in Embodiment 9 of the present invention.
  • FIG. 13 is a schematic diagram of a channel state information measuring apparatus according to Embodiment 10 of the present invention.
  • FIG. 14 is a schematic diagram of a device for transmitting a reference signal according to Embodiment 11 of the present invention.
  • the entire antenna array is divided into multiple groups. According to the correlation of each antenna group, corresponding pilot measurements are performed, and less pilot measurements can be used to implement corresponding ports of the entire antenna array.
  • CSI information measurement including precoding matrix indicator PMI, channel quality indication CQI, etc.
  • the embodiment of the present invention provides a method for measuring channel state information.
  • the method in this embodiment is a method performed by a device for receiving a signal, such as a user equipment or a base station, and the flowchart is as shown in FIG. 1.
  • the method includes :
  • Step A1 Receive reference signal configuration information sent by the sending device, and receive a reference signal of the configured N reference signal ports.
  • the sending device may be a device for sending a signal, such as a user equipment or a base station, and the sending device performs the implementation.
  • the receiving device of the example method corresponds to, for example, when the sending device is a user equipment, the receiving device is a base station, and when the sending device is a base station, the receiving device is a user equipment.
  • the reference signal configuration information refers to the information necessary for the sending device to send the reference signal on the configured N reference signal ports, such as the number of reference signal ports, the port number, the time-frequency resource information occupied by each reference signal port, and the M group.
  • the reference signal port is grouped packet information, etc., and the receiving device needs to receive the reference signal of the N reference signal ports according to the reference signal configuration information.
  • the reference signal of the N reference signal ports configured in step A1 may be sent by the sending device. Prepared to be sent on the same subframe. It should be noted that the number of reference signal ports of each group of the M group reference signal ports may be a prime number of the total number of antenna ports. The total number of antenna ports here may be the total number of antenna ports when the service data of the same cell is transmitted or the total number of antenna ports corresponding to the antenna configuration of the base station side.
  • the channel state information CSI measurement is performed by using the reference signals of the N reference signal ports in the step A2, which can be implemented by the following steps A21 to A23, specifically:
  • Step A22 Obtain a second precoding matrix W according to the first precoding matrix: That is, the second precoding matrix W is obtained by direct product of M first precoding matrices;
  • Step A23 obtaining a channel quality indicator, that is, CQI, according to the second precoding matrix.
  • the receiving device may feed back the measured precoding matrix indicator PMI and channel quality indicator CQI corresponding to the second precoding matrix to the foregoing sending device; thus, the transmitting device may be based on the PMI and the CQI. Perform a precoding operation.
  • the CSI measurement pilot correlation is designed, so that the number of ports configured by the sending device (that is, the M group port mentioned above) is much smaller than when the transmitting device actually transmits data.
  • the number of ports for example, the number of ports that the transmitting device actually transmits data is 32.
  • 32 ports can be effectively grouped and virtual weighted to finally obtain 5 sets of reference signal ports (each group includes 2 reference signal ports, a total of 10 Reference signal port), so that the final receiving device only needs to perform channel state information measurement on the reference signals of the 10 ports, and the CSI measurement phase of the reference signals of all ports when the receiving device needs to actually transmit data to the transmitting device in the prior art.
  • the method in the embodiment of the present invention greatly reduces the overhead of measuring pilots, especially as the antenna size increases, effectively improving the resource utilization of data transmission.
  • the embodiment of the present invention provides a method for transmitting a reference signal.
  • the method in this embodiment is a method performed by a sending device for sending a signal, such as a user equipment or a base station, and the method in this embodiment is the method in the foregoing first embodiment.
  • the method performed by the sending device corresponding to the receiving device, where the receiving device may be a device for receiving a signal, such as a user device or a base station, and the receiving device performs the embodiment.
  • the transmitting device of the method corresponds to the following, for example, when the sending device is a user device, the receiving device is a base station, and when the sending device is a base station, the receiving device is a user device.
  • the method flowchart in this embodiment is shown in FIG. 2, and the method includes:
  • Step B2 Send reference signal configuration information of the N reference signal ports, and send reference signals of the N reference signal ports according to the configured reference signal configuration information of the N reference signal ports and the reference signal port; wherein the reference signal
  • the configuration information refers to the information necessary for the sending device to send reference signals on the configured N reference signal ports, such as the number of reference signal ports, the port number, the time-frequency resource information occupied by each reference signal port, and the M group reference signal port. How to group packet information, etc., the receiving device needs to receive the reference signals of the N reference signal ports according to the reference signal configuration information.
  • the reference signals of the configured N reference signal ports may be sent in the same subframe.
  • the number of reference signal ports in each group of ports in the M group reference signal port may be a prime number of the total number of antenna ports.
  • the total number of antenna ports here may be the total number of antenna ports when the service data of the same cell is transmitted or the total number of antenna ports corresponding to the antenna configuration of the base station side.
  • the correlation of the CSI measurement pilot is designed, so that the number of ports configured by the sending device (ie, the M group port) is much smaller than when the transmitting device actually transmits data.
  • the number of ports so that the final receiving device only needs to perform channel state information measurement on the reference signals of the M group ports, compared with the CSI measurement of the reference signals of all ports when the receiving device needs to actually transmit data to the transmitting device in the prior art.
  • the method in the embodiment of the present invention greatly reduces the overhead of measuring pilots, and in particular, as the antenna size increases, the resource utilization rate of data transmission is effectively improved.
  • the embodiment of the invention provides a channel state information measuring method.
  • the precoding matrix indicator (PMI) of all antenna ports is a precoding matrix indicator PMI m of multiple antenna port groups, (where PMI m
  • the precoding matrix indicator representing the mth group antenna port is jointly obtained, and therefore, the antenna port of the channel state information reference signal (CSI-RS, Channel State Information-Reference Signal) dedicated to channel state information measurement can be divided into A plurality of antenna port groups of different levels measure precoding matrix indicators of respective antenna port groups of different levels, thereby obtaining a total precoding matrix indicator of all antenna ports. See the formula below:
  • the antenna ports of the first group consist of two horizontal antenna ports in the same polarization direction, such as a positive 45 degree polarization direction. 2 horizontal antenna ports in the direction of polarization of 45 degrees in the horizontal elliptical dotted line frame 1 in FIG.
  • the second set of antenna ports are composed of two vertical antenna ports in the same polarization direction, as shown in FIG. 3, two vertical antenna ports of the 45-degree polarization direction in the vertical elliptical dotted line frame 2.
  • the CSI measurements of the first and second sets of antenna ports ensure that the first level reference signal antenna ports formed by the horizontal 2 antenna port and the vertical 2 antenna port are obtained.
  • Channel state information eg, precoding matrix indicator: PMI1, etc.
  • the third set of antenna ports is composed of two horizontally directed first virtual antenna ports, wherein the first virtual antenna port is obtained by omnidirectional weighting of the first level reference signal antenna port. All reference signal antenna ports in circle 3 of Figure 3 are virtually weighted to obtain a horizontal virtual port one of the second level, and all reference signal antenna ports in circle 4 are virtual weighted to obtain a horizontal virtual port 2 of the second level, horizontal The second level virtual port one and the second level virtual port two are further combined to form a third group of antenna ports.
  • the fourth group of antenna ports is composed of two vertical to first virtual antenna ports, wherein the first virtual day
  • the line port is obtained by omnidirectional weighting of the first stage reference signal antenna port.
  • All reference signal antenna ports in circle 3 of FIG. 3 are virtually weighted to obtain a vertical virtual port one of the second level, and all reference signal antenna ports in circle 5 are virtually weighted to obtain a second level of vertical virtual port two,
  • the second-level virtual port one and the second-level virtual port two in the vertical direction form a fourth group of antenna ports.
  • CSI including precoding matrix indicator and channel quality indicator, etc.
  • measurement of the third group and the fourth group of antenna ports can ensure that two levels are formed to the first virtual port and two vertically to the first virtual port.
  • Channel state information of the second level reference signal antenna port e.g., precoding matrix indicator (PMI2), etc.
  • the fifth set of antenna ports is composed of two horizontally facing second virtual antenna ports, and the second virtual antenna port is obtained by omnidirectional weighting of the second stage pilot antenna ports. That is, all reference signal antenna ports in circle 11 of FIG. 3 are virtually weighted to obtain a horizontal virtual port one of the third level, and all reference signal antenna ports in circle 12 are virtually weighted to obtain a horizontal virtual port 2 of the third level, the level The third-level virtual port one and the third-level virtual port two are further combined to form a fifth group of antenna ports.
  • the antenna port of the sixth group is composed of two third virtual antenna ports, wherein the first third virtual antenna port corresponds to the antenna port of the first polarization direction, and the second third virtual antenna port is virtualized.
  • the virtual antenna port corresponds to an antenna port that is virtually weighted by all antenna ports in the second polarization direction.
  • the first level dimension of the total precoding matrix information corresponds to a 2*2 basic antenna block in the antenna array (4 antenna arrays of +45 degree polarization direction as shown by the smallest circle in FIG. 4);
  • the second level dimension of the precoding matrix information corresponds to a (2*2)*(2*2) basic antenna block composed of the first level dimension in the antenna array (four as shown by the second largest circle in FIG.
  • the third dimension of the total precoding matrix information corresponds to a basic block formed by the second dimension in the antenna array (the next two large circles in the figure below)
  • the largest circle of the composition because the number of the next largest circle is not enough to form a complete third-order dimension, the antenna array corresponding to the third-level dimension is the antenna array block corresponding to the second-level dimension (2*2)*(2* 2)
  • Two-dimensional expansion in the horizontal direction (2*2)*(2*2)*2
  • the total precoding information of the first polarization direction obtained ie, the third-level precoding
  • the number of CSI-RS ports to be measured (including: physical antenna port and virtual antenna port) is as shown in FIG. 4, that is, the antenna port marked with numbers in FIG. 4, where The antenna port includes: 4 antenna ports numbered 1, 2, 3, and 4, and the virtual antenna port shown in the circle in FIG. 4 includes: numbers 5, 6, 7, 8, 9, 10, The virtual antenna ports of 11, 12, the CSI-RS ports represented by each circle are omnidirectional virtual weighted virtual antenna ports.
  • the total number of antenna ports in the LTE and LTE-A systems is 2 ⁇ n, and the number of CSI-RS ports to be measured in this solution is only 2*n. Therefore, the scheme greatly reduces the complexity of the pilot design and the pilot overhead.
  • the N CSI-RS ports are divided into M groups according to a predefined criterion, where M is an integer greater than zero, and CSI measurement is performed according to the CSI-RS ports in each group to obtain the first
  • M further obtains the second precoding matrix W according to the first precoding matrix: Obtaining a CQI according to the second precoding matrix, and finally feeding back the second precoding matrix PMI and CQI to the transmitting device.
  • each group in the M group includes two CSI-RS ports.
  • the method provided by the embodiment of the present invention :
  • the embodiment of the present invention provides a channel state information measuring device, that is, the receiving device described in the first embodiment, as shown in FIG. 5, the device includes: a transceiver 501 and a processor 502 respectively connected to the bus;
  • the reference signal configuration information refers to the information necessary for the sending device to send the reference signal on the configured N reference signal ports, such as the number of reference signal ports, the port number, and the reference signal ends.
  • the transceiver 501 is configured to receive reference signal configuration information sent by the sending device and a reference signal of the configured N reference signal ports;
  • Reference signal port composition, M> 1.
  • the channel state information CSI measurement is performed on the reference signal of the configured N reference signal ports, and the CSI measurement is performed on the reference signals of each of the M groups of reference signal ports to obtain M first pre-preparations.
  • the transceiver 501 is further configured to receive, by the sending device, a reference signal of the configured N reference signal ports that are sent by the sending device in the same subframe.
  • the number of reference signal ports of each group of the M group reference signal ports is a prime number of the total number of antenna ports.
  • the transceiver 501 is further configured to feed back, to the foregoing sending device, a precoding matrix indicator PMI and a channel quality indicator CQI corresponding to the second precoding matrix, so that the sending device performs precoding.
  • the channel state information measuring apparatus provided by the embodiment of the present invention is designed by using the correlation of the CSI measurement pilots, so that the number of ports configured by the sending device (that is, the above M group) is much smaller than the number of ports when the transmitting device actually transmits data. Therefore, the processor 502 of the device in this embodiment only needs to perform channel state information measurement on the reference signals of the M group ports, and the reference signal of all ports in the prior art that the receiving device needs to actually transmit data to the transmitting device. Compared with the CSI measurement, the overhead of measuring the pilot is greatly reduced, especially as the antenna size increases, the resource utilization of the data transmission is effectively improved.
  • the embodiment of the present invention provides a device for transmitting a reference signal, that is, the sending device described in Embodiment 2, as shown in FIG. 6, the device includes: a processor 601 connected to the bus and receiving Transmitter 602,
  • the transceiver 602 is configured to send reference signal configuration information of the N-speak reference signal port configured by the processor 601, and send the configured N reference according to the configured N reference signal ports and the reference signal configuration information.
  • the information, and the group information of the M group reference signal ports are grouped, etc., and the receiving device needs to receive the reference signals of the N reference signal ports according to the reference signal configuration information.
  • the reference signal of the configured N reference signal ports is used by the receiving device to perform channel state information CSI measurement on the reference signals of the configured N reference signal ports, including: respectively, each of the M groups of reference signal ports
  • a channel quality indicator CQI is obtained according to the second precoding matrix.
  • the transceiver 602 in this embodiment is further configured to receive a precoding matrix indicator PMI and a channel quality indicator CQI corresponding to the second precoding matrix fed back by the receiving device, where the processor 601, It is further configured to perform a precoding operation according to the precoding matrix indicator PMI and the channel quality indicator CQI corresponding to the second precoding matrix received by the transceiver 601.
  • the transceiver 602 is configured to send the reference signals of the configured N reference signal ports in the same subframe.
  • the number of reference signal ports of each group of the M group reference signal ports is a prime number of the total number of antenna ports.
  • the apparatus for transmitting a reference signal is designed by using the correlation of the CSI measurement pilots, so that the number of ports configured by the processor 601 of the apparatus in the embodiment (ie, the M group) is much smaller than when the actual data is transmitted.
  • the number of ports so that the final receiving device only needs to perform channel state information measurement on the reference signals of the M group ports, and the CSI measurement is required in the prior art for the reference signals of all ports when the receiving device needs to actually transmit data to the transmitting device.
  • the overhead of measuring pilots is greatly reduced, especially as the size of the antenna increases, the resource utilization of data transmission is effectively improved.
  • An embodiment of the present invention provides a method for measuring channel state information.
  • the method in this embodiment is another method for measuring channel state information performed by a receiving device. As shown in FIG. 7, the method includes:
  • Step C1 Receive reference signal configuration information sent by the sending device and a reference signal of the configured N reference signal ports.
  • the value of N may be less than or equal to the total number of antenna ports.
  • the sending device may be a device for transmitting a signal, such as a user equipment or a base station, and the sending device corresponds to the receiving device that performs the method in this embodiment.
  • the receiving device is a base station
  • the sending device is a sending device.
  • the base station the receiving device is a user equipment.
  • the channel state information CSI measurement based on the reference signals of the N reference signal ports configured by the configuration may be specifically performed by the following steps C21 to C23, specifically,
  • Step C21 Perform CSI measurement on the reference signals of each of the M groups of reference signal ports, obtain weighting values corresponding to the reference signal ports of each group, and obtain a first precoding matrix according to the weighting value and/or Or a second precoding matrix such that the weighting value corresponds to a certain component in the first precoding matrix and/or the second precoding matrix.
  • the weighting values corresponding to any two sets of reference signal ports differ by one phase term; and/or, in the second precoding matrix, the weighting values corresponding to the any two sets of reference signal ports There is a phase term difference between them.
  • the phase term is Form of which An angle between [0, 2 ⁇ ].
  • Step C22 Obtain a third precoding matrix according to the first precoding matrix and/or the second precoding matrix obtained in step C21.
  • the third precoding matrix may be obtained by performing a certain operation on the first precoding matrix and/or the second precoding matrix.
  • the weighting values corresponding to any two sets of reference signal ports are different by one phase term, and then obtained according to the first precoding matrix.
  • the third precoding matrix if the final precoding matrix adopts a dual codebook structure, the third precoding matrix can be obtained by the first precoding matrix and another precoding matrix operation (mainly multiplied), wherein another precoding
  • the matrix may adopt a codebook structure of the 8th or 10th version of the 3rd Generation Partnership Project (3GPP), such as multiplexing one codebook in the double codebook structure form of the 10th version, and the first precoding matrix W1 Can be:
  • the third precoding matrix can be obtained by another precoding matrix and the second precoding matrix W2 (mainly multiplied), wherein another precoding
  • the matrix may adopt a codebook structure of the 3GPP version 8 or 10, such as multiplexing one codebook in the dual codebook structure form of the 10th version, wherein the structure of the second precoding matrix W2 and the first precoding matrix are The structure is similar.
  • the weighting values corresponding to any two sets of reference signal ports are different by one phase term, and are in the first In the precoding matrix, the weighting values corresponding to any two sets of reference signal ports differ by one phase term.
  • the third precoding matrix is obtained according to the first precoding matrix and the second precoding matrix, if the final precoding matrix adopts a dual codebook structure, the first precoding matrix W1 and the second precoding matrix W2 may be operated. (mainly multiplying) to obtain a third precoding matrix.
  • Step C23 obtaining a channel quality indicator CQI according to the third precoding matrix
  • the precoding matrix indicator PMI and the channel quality indicator CQI corresponding to the third precoding matrix may be fed back to the foregoing sending device, so that the sending device is based on the PMI and the CQI. Perform a precoding operation.
  • the third precoding matrix when the third precoding matrix is obtained according to the first precoding matrix and the second precoding matrix in step C22, the third precoding matrix may be specifically represented as:
  • W is a third precoding matrix
  • W1 is a first precoding matrix
  • an i th diagonal block in W1 corresponds to a weighting value corresponding to an i th group reference signal port, where i is a value of 1 to M
  • W2 is a second precoding matrix
  • the third precoding matrix is obtained according to the first precoding matrix and the second precoding matrix in step C21, wherein the third precoding matrix is specifically represented as:
  • W is the third precoding matrix
  • W1 is the first precoding matrix
  • W2 is the second precoding matrix
  • the i th row in W2 corresponds to the weighting value corresponding to the i th group reference signal port, where the value of i is 1 to M;
  • the method for measuring channel state information provided by the embodiment of the present invention is designed by using the correlation between the CSI measurement reference signal ports, so that the number of ports configured by the sending device (that is, the M group) is smaller than the port when the transmitting device actually transmits data. Therefore, the final receiving device only needs to perform channel state information measurement on the reference signals of the M group ports, compared with the CSI measurement of the reference signals of all ports when the receiving device needs to actually transmit data to the transmitting device in the prior art.
  • the method in the embodiment of the invention greatly reduces the overhead of measuring the pilot, especially as the antenna scale increases, the resource utilization of the data transmission is effectively improved.
  • An embodiment of the present invention provides a method for transmitting a reference signal, where the method of the present embodiment is a method performed by a transmitting device, which is a method performed by a transmitting device corresponding to a receiving device in the method in the foregoing sixth embodiment, wherein receiving
  • the device may be a device for receiving a signal, such as a user equipment or a base station, and the receiving device corresponds to the transmitting device that performs the method in this embodiment.
  • the sending device is a user equipment
  • the receiving device is a base station
  • the sending device is a base station
  • the sending device is a base station
  • the sending device is a base station
  • the receiving device is a user device.
  • the method flowchart in this embodiment is shown in FIG. 8, and the method includes:
  • Step D2 Send reference signal configuration information of the configured N reference signal ports, and send a reference signal according to the configured N reference signal ports and reference signal configuration information, where the reference signal is used by the receiving device.
  • the reference signal of the configured N reference signal ports performs channel state information CSI measurement, and obtains a third precoding matrix determined according to the first precoding matrix and/or the second precoding matrix, and obtains channel quality according to the third precoding matrix. Indicates CQI.
  • the process in which the receiving device obtains the third precoding matrix may be as described in the foregoing Embodiment 6, and details are not described herein.
  • the receiving device performs channel state information CSI measurement based on the reference signals of the configured N reference signal ports, including: performing CSI measurement on each of the reference signals of each group of the M group reference signal ports, and obtaining a Deriving a weighting value corresponding to each group of reference signal ports, and obtaining the first precoding matrix and/or the second precoding matrix according to the weighting value, so that the weighting value is a first precoding matrix and/or a A component of a second precoding matrix.
  • the weighting values corresponding to the any two sets of reference signal ports are different by one phase term; and/or, in the second precoding matrix, the two sets of reference signal ports correspond to The weighted values are different by one phase term; and the obtained third precoding matrix may be obtained by performing a certain operation on the first precoding matrix and the second precoding matrix.
  • the phase term can be Form of which An angle between [0, 2 ⁇ ].
  • N may be less than or equal to the total number of antenna ports.
  • the transmitting device of this embodiment may further receive an indicator PMI and a channel quality indicator CQI corresponding to the third precoding matrix fed back by the receiving device, and perform a precoding operation according to the PMI and the CQI.
  • a method for transmitting a reference signal according to an embodiment of the present invention is designed by using a CSI measurement pilot correlation.
  • the M group reference signal port may be configured by the sending device, and the receiving device only needs to refer to the M group.
  • the reference signal of the signal port performs channel state information measurement, and the number of reference signals of the M group is smaller than the number of ports when the data is actually transmitted, so that the reference signal of all ports when the receiving device needs to actually transmit data to the transmitting device is performed with the prior art.
  • the method in the embodiment of the present invention greatly reduces the overhead of measuring pilots, especially as the antenna size increases, effectively improving the resource utilization of data transmission.
  • the embodiment of the present invention provides a channel state information measurement method. As the antenna size increases, the number of antennas increases, and the correlation between all antennas in the array can be split into multiple antenna groups for correlation. That is, the correlation between the individual antenna groups constitutes the correlation between the antennas of the entire antenna array.
  • the entire antenna array is divided into equal 4 antenna groups 1 to 4 as shown in FIG.
  • the precoding matrix indicator of the group Wx composed of the first two antenna groups 1 and 2 and the precoding matrix indicator of the group Wy composed of the latter two antenna groups 3 and 4 are in common phase (Co- Phasing) W.
  • the correlation between the antenna groups is used to make the correlation domain difference.
  • the adjacent second antenna group After the first antenna group measures the precoding indicator PMI, the adjacent second antenna group only needs to measure the phase with the first antenna group.
  • the difference information since only the phase difference information is measured without measuring the same precoding matrix indicator PMI as the first antenna group, can greatly reduce the overhead of the required measurement pilot. specifically:
  • the phase difference information is reflected in W1
  • the phase difference information is determined in the first precoding matrix for the method determined by the predetermined method or the higher layer in the base station or the user equipment, or Reflected in the second precoding matrix.
  • the PMI of the second group 2 differs from the PMI of the first group 1 by one phase Offset
  • the PMI of the third group 3 differs from the PMI of the second group 2 by one phase Offset.
  • the phase Offset between the PMIs of each group can be reflected in W1.
  • the solution provided by the embodiment of the present invention groups all the reference signal antenna ports in the array, and different sets of measurement reference signal ports perform different precoding matrix indicator measurements.
  • the first group 1 measurement reference signal port is used to measure the precoding matrix indicator corresponding to the antenna port included in the first group 1.
  • the second group 1 measurement reference signal port is used to measure the phase difference between the precoding indicator corresponding to the antenna port included in the second group 2 and the precoding indicator corresponding to the antenna port included in the first group 1.
  • the third group 3 measurement reference signal port is used to measure the phase difference between the precoding indicator corresponding to the antenna port included in the third group 3 and the precoding indicator corresponding to the antenna port included in the second group 2, And so on.
  • the first group 1 measurement reference signal port may be all antenna ports in Group1 in FIG. 11, and the second group 2 reference signal port may be the i-th antenna port in Group1 in FIG. 11 and the i-th in Group 2
  • the first precoding matrix of the entire antenna array is a block diagonal array composed of N blocks.
  • the precoding matrix structure of the entire antenna array measured by the above measurement reference signal can be expressed as follows:
  • the embodiment of the present invention provides a channel state information measurement method. As the antenna size increases, the number of antennas increases, and the correlation between all antennas in the array can be split into multiple antenna groups to represent the correlation. That is, the correlation between the individual antenna groups constitutes the correlation between the antennas of the entire antenna array.
  • the entire antenna array is divided into equal 4 antenna groups as shown in Figure 9 above.
  • the CSI measurement of all the antenna ports of the array is used to obtain the corresponding PMI information, and the measurement reference signal overhead required when the antenna size is large will be huge.
  • the precoding matrix indicator of the first two antenna groups 1 and 2 and the precoding matrix indicator of the last two antenna groups 3 and 4 are co-phased, as shown in Figure 10 above.
  • the correlation domain difference is made, and the correlation domain difference is obtained by using the correlation of the precoding matrix corresponding to each antenna port group, which can be understood as the first antenna port group measurement.
  • the adjacent second antenna port group measures the phase difference information between the second antenna port group and the first antenna port group, and only needs to measure the phase difference information without further measurement.
  • the first antenna port group has the same precoding matrix indicator PMI information, thereby greatly reducing the overhead of the required measurement pilots. specifically,
  • the phase difference information is reflected in W2
  • the PMI of the second group of antenna ports is different from the PMI of the first group of antenna ports by one phase Offset
  • the PMI of the third group of antenna ports and the second group of antenna ports are The PMI differs by one phase Offset.
  • the phase Offset between the PMIs of the antenna ports of each group can be reflected by W2.
  • the solution provided by the embodiment of the present invention groups all the antenna ports in the array, and the reference signal ports of different groups complete different precoding matrix indicator measurements, and the specific measurement is similar to the measurement in the above-mentioned eighth embodiment of China, and details are not described herein.
  • the second precoding matrix of the entire antenna array is a column vector composed of N matrix blocks.
  • the precoding matrix measured by the first group 1 reference signal port is the first row element of the second precoding matrix W2 of the entire antenna array, denoted as Y 1 , and the other groups except the first group 1 are relative to the first group 1
  • the precoding matrix structure of the entire antenna array obtained by measuring the reference signal port can be expressed as follows:
  • the CSI measurement is performed according to the configured N measurement reference signal ports, and the precoding matrix indicator in the CSI information obtained by the measurement is composed of the following M parts.
  • the M parts include a first precoding matrix W1, first phase information, and second phase information up to the M-1th phase information.
  • the first precoding matrix may be a long term wideband precoding matrix indicator, or a short term/subband precoding matrix indicator;
  • the final precoding matrix can be:
  • the embodiment of the present invention provides a channel state information measuring device, that is, the receiving device described in the foregoing sixth embodiment, as shown in FIG. 13, the device includes: a transceiver 131 and a processor 132 respectively connected to the bus;
  • the transceiver 131 is configured to receive reference signal configuration information sent by the sending device and a reference signal of the configured N reference signal ports, where the value of N may be less than or equal to the total number of antenna ports.
  • the processor 132 performs CSI measurement on the reference signals of each group of the M groups of reference signal ports when performing channel state information CSI measurement based on the reference signals of the configured N reference signal ports. And obtaining a weighting value corresponding to each group of reference signal ports, and obtaining a first precoding matrix and/or a second precoding matrix according to the weighting value, so that the weighting value corresponds to the first precoding matrix and/or the second pre a certain component in the coding matrix; obtaining a third precoding matrix according to the first precoding matrix and/or the second precoding matrix; and obtaining a channel quality indicator CQI according to the third precoding matrix.
  • the process in which the processor 132 obtains the third precoding matrix may be as described in the foregoing sixth embodiment, and details are not described herein.
  • the weighting values corresponding to any two sets of reference signal ports are different by one phase term; and/or, in the second precoding matrix, the weighting of the any two sets of reference signal ports
  • the values differ by one phase term, where the phase term can be Form of which It may be an angle between [0, 2 ⁇ ] and the processor 132 may obtain a certain operation from the first precoding matrix and the second precoding matrix when obtaining the third precoding matrix, and obtain the third pre-
  • the coding matrix may be as described in Embodiment 6 above, and details are not described herein.
  • the transceiver 131 may be further configured to feed back, to the foregoing sending device, a precoding matrix indicator PMI and a channel quality indicator CQI corresponding to the third precoding matrix, so that the sending device is based on the PMI and the CQI. Perform a precoding operation.
  • the channel state information measuring apparatus is designed to use the correlation between the CSI measurement reference signal ports, so that the number of ports configured by the sending device is smaller than the number of ports when the transmitting device actually transmits data, so that in this embodiment,
  • the processor 132 of the device only needs to perform channel state information measurement on the reference signal of the group port of the M (far less than the number of ports actually transmitting data), and all the ports in the prior art when the receiving device needs to actually transmit data to the transmitting device.
  • the reference signal greatly reduces the overhead of the measurement reference port, especially as the antenna size increases, which effectively improves the resource utilization of the data transmission.
  • the embodiment of the present invention provides a transmitting device for a reference signal, that is, the transmitting device described in the foregoing seventh embodiment.
  • the device includes: a transceiver 141 and a processor 142 connected to the bus.
  • the transceiver 141 is configured to send reference signal configuration information of the N reference signal ports configured by the processor 142, and send a reference signal according to the configured N reference signal ports and reference signal configuration information, where The reference signal is used by the receiving device to perform channel state information CSI measurement based on the reference signal of the configured N reference signal ports, to obtain a third precoding matrix determined according to the first precoding matrix and/or the second precoding matrix, according to The third precoding matrix obtains a channel quality indicator CQI.
  • the third precoding matrix may be as shown in the foregoing seventh embodiment, and details are not described herein.
  • the receiving device performs channel state information CSI measurement based on the reference signals of the configured N reference signal ports, including: performing CSI measurement on each of the reference signals of each group of the M group reference signal ports, and obtaining a Deriving a weighting value corresponding to each group of reference signal ports, and obtaining the first precoding matrix and/or the second precoding matrix according to the weighting value, so that the weighting value is a first precoding matrix and/or a A component of a second precoding matrix.
  • the receiving device is The process of obtaining the third precoding matrix may be as described in Embodiment 6 above, and details are not described herein.
  • the weighting values corresponding to the any two sets of reference signal ports are different by one phase term; and/or, in the second precoding matrix, the two sets of reference signal ports correspond to The weighted values are different by one phase term; and the obtained third precoding matrix may be obtained by performing a certain operation on the first precoding matrix and the second precoding matrix.
  • the phase term described here can be Form of which Can be an angle between [0, 2 ⁇ ].
  • N may be less than or equal to the total number of antenna ports.
  • the transceiver 141 of the embodiment is further configured to receive the indicator PMI and the channel quality indicator CQI corresponding to the third precoding matrix fed back by the receiving device, and the processor 142 is further configured to receive according to the transceiver 141.
  • the PMI and CQI perform precoding operations.
  • a device for transmitting a reference signal is designed by using CSI to measure the correlation of pilots.
  • the M group port may be configured by the processor 142, and the receiving device only needs to be configured for the M group port.
  • the reference signal is used for channel state information measurement, and the number of ports of the M group reference signal is smaller than the number of ports when the data is actually transmitted, so that CSI measurement is performed on the reference signals of all ports when the receiving device needs to actually transmit data to the transmitting device in the prior art.
  • the overhead of measuring pilots is greatly reduced, especially as the size of the antenna increases, the resource utilization of data transmission is effectively improved.
  • the program may be stored in a computer readable storage medium, and the storage medium may include: ROM, RAM, disk or CD.

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Abstract

一种信道状态信息测量、参考信号的发送方法和装置，方法包括：接收发送设备发送的参考信号配置信息和配置的N个参考信号端口的参考信号，基于所述配置的N个参考信号端口的参考信号进行信道状态信息CSI测量，其中，N>＝6，所述N个参考信号端口由M组参考信号端口组成，M>＝1；所述基于配置的N个参考信号端口的参考信号进行信道状态信息CSI测量，包括：分别对所述M组参考信号端口中每组端口的参考信号进行CSI测量，得到M个第一预编码矩阵，即Wi，其中i＝1，2，…，M；根据所述第一预编码矩阵得到第二预编码矩阵W：W=W1⊗W2⊗...⊗WM；根据第二预编码矩阵得到信道质量指示CQI。该方案实现了信道状态信息的测量。

Description

一种信道状态信息测量、参考信号的发送方法和装置
本申请要求于2013年12月31日提交中国专利局、申请号为201310752712.4、发明名称为“一种信道状态信息测量、参考信号的发送方法和装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术领域，特别涉及一种信道状态信息测量、参考信号的发送方法和装置。
背景技术
无线通信系统中，发送端和接收端采用空间复用的方式使用多根天线来获取更高的速率。相对于一般的空间复用方法，一种增强的技术是：接收端反馈信道状态信息给发送端，发送端根据获得的信道状态信息使用一些对发射信号的预编码技术，极大的提高传输性能。
发送端发送预定义的导频信号，其中，导频信号的端口数等于数据发送的端口数，接收端基于发送端发送的预定义导频信号，进行信道状态信息(Channel State Information，CSI)的测量，其中，CSI包括：预编码矩阵指示符(Precoding Matrix Indicator，PMI)，信道质量指示(Channel Quality Indicator，CQI)，和秩指示(Rank Indicator，RI)，以及预编码矩阵类型指示(Precoding Type Indicator，PTI)等等。
为了获得更高的小区平均频谱效率及提高小区边缘的覆盖，高级长期演进系统(LTE-A，Long Term Evolution Advanced)在现有的LTE系统的基础上，下行支持最多8根天线，并且在码本反馈方面提出了一些反馈增强的技术，主要是增强码本的反馈精度。对于需要反馈信道状态信息的一个子带或者多个联合子带，用户设备(UE)向基站反馈两个PMI，分别为PMI1和PMI2，其中，PMI1对应一个码本C1中的码字W1，PMI2对应另一个码本C2中的码字W2。
基站端有与用户设备端相同的C1和C2的信息，收到PMI1和PMI2后，从对应的码本C1和C2中找到对应的码字W1和W2，获得一个虚拟的码字W对应的码本。在具体的实现时，可定义对应不同Rank的子码本如下(此处仅以Rank1和Rank2为例进行举例)：
表1.Rank 1码本
Figure PCTCN2014090811-appb-000001
表2.Rank 2码本
Figure PCTCN2014090811-appb-000002
Figure PCTCN2014090811-appb-000003
上述的双码本结构用另一种表达形式时：W＝W1*W2，这里W1是一个块对角阵，W1＝＝[X 0；0 X]，X为32个4天线离散傅里叶变换(DFT，Discrete Fourier Transform)波束组成的波束空间，W1为32个波束空间中的相邻四个波束形成的某个波束组，Rank1,2下W1有16个可选择的波束组，W2用于选择W代表的波束组中的某个具体波束并进行两个极化方向的相位旋转。
随着技术发展，天线规模会从8扩展到16，32，64甚至上百，随着天线规模的增大，相应的CSI测量和反馈复杂度也相应增大。如果仍然沿用之前的CSI测量导频设计方法，测量导频开销将随着天线规模的增大线性成倍增长。如当前LTE系统中的4端口CSI-RS资源设计中，每个物理资源块(PRB，Physical Resource Block)中，每端口的CSI-RS占居1或2个资源单元，当天线规模增大到几十甚至上百时，每PRB内的CSI-RS所占用的资源单元数目将尤其庞大，从而导致实际可用于数据传输的有效资源单元数目太少。
发明内容
本发明实施例提供一种信道状态信息测量、参考信号的发送方法和装置，有效提高了数据传输的资源利用率。
本发明实施例第一方面提供一种信道状态信息测量方法，所述方法包括：
接收发送设备发送的参考信号配置信息和配置的N个参考信号端口的参考信号；
基于所述配置的N个参考信号端口的参考信号进行信道状态信息CSI测量，其中，N>＝6，所述N个参考信号端口由M组参考信号端口组成，M>＝1；
其中，所述基于配置的N个参考信号端口的参考信号进行信道状态信息CSI测量，包括：分别对所述M组参考信号端口中每组端口的参考信号进行CSI测量，得到M个第一预编码矩阵，即Wi，其中i＝1，2，…，M；根据所述第一预编码矩阵得到第二预编码矩阵W：
Figure PCTCN2014090811-appb-000004
根据所述第二预编码矩阵得到信道质量指示CQI。
本发明实施例第一方面的第一种可能实现方式中，所述方法还包括：
向所述发送设备反馈所述第二预编码矩阵对应的预编码矩阵指示符PMI和所述信道质量指示CQI。
结合本发明实施例第一方面，或第一方面的第一种可能实现方式中，在本发明实施例第一方面的第二种可能实现方式中：
所述配置的N个参考信号端口的参考信号，由所述发送设备在同一个子帧上发送。
结合本发明实施例第一方面，或第一方面的第一种或第二种可能实现方式中，在本发明实施例第一方面的第三种可能实现方式中：
所述M组参考信号端口中每组端口的参考信号端口数为总天线端口数的一个质数。
本发明实施例第二方面提供一种参考信号的发送方法，所述方法包括：
配置N个参考信号端口，N>＝6，所述N个参考信号端口由M组参考信号端口组成，M>＝1；
发送所述N个参考信号端口的参考信号配置信息；
根据所述配置的N个参考信号端口及所述参考信号配置信息，发送所述配置的N个参考信号端口的参考信号；
其中，所述配置的N个参考信号端口的参考信号用于接收设备对所述配置的N个参考信号端口的参考信号进行信道状态信息CSI测量，包括：分别对所述M组参考信号端口中每组端口的参考信号进行CSI测量，得到M个第一预编码矩阵，即Wi，其中i＝1，2，…，M；根据所述第一预编码矩阵得到第二预编码矩阵W：
Figure PCTCN2014090811-appb-000005
根据所述第二预编码矩阵得到信道质量指示CQI。
结合本发明实施例第二方面的第一种可能实现方式中，所述方法还包括：
接收所述接收设备反馈的所述第二预编码矩阵对应的预编码矩阵指示符PMI和所述信道质量指示CQI，并根据所述PMI和CQI进行预编码操作。
结合本发明实施例第二方面，或第二方面的第一种可能实现方式中，在本发明实施例第二方面的第二种可能实现方式中：
所述配置的N个参考信号端口的参考信号在同一个子帧上发送。
结合本发明实施例第二方面，或第二方面的第一种或第二种可能实现方式中，在本发明实施例第二方面的第三种可能实现方式中：
所述M组参考信号端口中每组端口的参考信号端口数为总天线端口数的 一个质数。
本发明实施例第三方面提供一种信道状态信息测量装置，所述装置包括：分别连接到总线上的收发器和处理器；
所述收发器，用于接收发送设备发送的参考信号配置信息和配置的N个参考信号端口的参考信号；
所述处理器，用于基于所述收发器接收的配置的N个参考信号端口的参考信号进行信道状态信息CSI测量，其中，N>＝6，所述N个参考信号端口由M组参考信号端口组成，M>＝1；
其中，所述基于配置的N个参考信号端口的参考信号进行信道状态信息CSI测量，包括：分别对所述M组参考信号端口中每组端口的参考信号进行CSI测量，得到M个第一预编码矩阵，即Wi，其中i＝1，2，…，M；根据所述第一预编码矩阵得到第二预编码矩阵W：
Figure PCTCN2014090811-appb-000006
根据所述第二预编码矩阵得到信道质量指示CQI；
在本发明实施例第三方面的第一种可能实现方式中：
所述收发器，还用于向所述发送设备反馈所述第二预编码矩阵对应的预编码矩阵指示符PMI和信道质量指示CQI。
结合本发明实施例第三方面，或第三方面的第一种可能实现方式中，在本发明实施例第三方面的第二种可能实现方式中，所述收发器，还用于接收所述发送设备在同一个子帧上发送的所述配置的N个参考信号端口的参考信号。
结合本发明实施例第三方面，或第三方面的第一种或第二种可能实现方式中，在本发明实施例第三方面的第三种可能实现方式中，所述M组参考信号端口中每组端口的参考信号端口数为总天线端口数的一个质数。
本发明实施例第四方面提供一种参考信号的发送装置，所述发送设备包括：分别连接到总线上的处理器和收发器，
所述处理器，用于配置N个参考信号端口，N>＝6，所述N个参考信号端口由M组参考信号端口组成，M>＝1；
所述收发器，用于发送所述处理器配置的N个参考信号端口的参考信号配置信息，根据所述配置的N个参考信号端口及所述参考信号配置信息，发送所述配置的N个参考信号端口的参考信号；其中，配置的N个参考信号端 口的参考信号用于接收设备对所述配置的N个参考信号端口的参考信号进行信道状态信息CSI测量，包括：分别对所述M组参考信号端口中每组端口的参考信号进行CSI测量，得到M个第一预编码矩阵，即Wi，其中i＝1，2，…，M；根据所述第一预编码矩阵得到第二预编码矩阵W：
Figure PCTCN2014090811-appb-000007
根据所述第二预编码矩阵得到信道质量指示CQI。
在本发明实施例第四方面的第一种可能实现方式中：
所述收发器，还用于接收所述接收设备反馈的所述第二预编码矩阵对应的预编码矩阵指示符PMI和信道质量指示CQI；
所述处理器，还用于根据所述收发器接收的所述第二预编码矩阵对应的预编码矩阵指示符PMI和信道质量指示CQI进行预编码操作。
结合本发明实施例第四方面，或第四方面的第一种可能实现方式中，在本发明实施例第四方面的第二种可能实现方式中，所述收发器，具体用于将所述配置的N个参考信号端口的参考信号在同一个子帧上发送。
结合本发明实施例第四方面，或第四方面的第一种或第二种可能实现方式中，在本发明实施例第四方面的第三种可能实现方式中：
所述M组参考信号端口中每组端口中的参考信号端口数为总天线端口数的一个质数。
本发明实施例第五方面提供一种信道状态信息测量方法，所述方法包括：
接收发送设备发送的参考信号配置信息和配置的N个参考信号端口的参考信号；
对所述配置的N个参考信号端口的参考信号进行信道状态信息CSI测量；其中，所述N个参考信号端口由M组参考信号端口组成，且M>＝1；
其中，基于所述配置的N个参考信号端口的参考信号进行信道状态信息测量，包括：分别对所述M组参考信号端口中每组端口的参考信号进行CSI测量，得到所述每组参考信号端口对应的加权值，并根据所述加权值得到第一预编码矩阵和/或第二预编码矩阵；根据所述第一预编码矩阵和/或第二预编码矩阵得到第三预编码矩阵；根据所述第三预编码矩阵得到信道质量指示CQI；
其中，在所述第一预编码矩阵中，任意两组参考信号端口对应的加权值之间相差一个相位项；和/或在所述第二预编码矩阵中，所述任意两组参考信号 端口对应的加权值之间相差一个相位项。
本发明实施例第五方面的第一种可能实现方式中，所述方法还包括：
向所述发送设备反馈所述第三预编码矩阵对应的预编码矩阵指示符PMI和信道质量指示CQI。
结合本发明实施例第五方面，或第五方面的第一种可能实现方式中，在本发明实施例第五方面的第二种可能实现方式中：
所述N小于等于总天线端口数。
结合本发明实施例第五方面，或第五方面的第一种或第二种可能实现方式中，在本发明实施例第五方面的第三种可能实现方式中，所述相位项为
Figure PCTCN2014090811-appb-000008
的形式，其中
Figure PCTCN2014090811-appb-000009
为[0,2π]之间的一个角度。
结合本发明实施例第五方面，或第五方面的第一种到第三种可能实现方式中任一种可能实现方式，在本发明实施例第五方面的第四种可能实现方式中，所述根据所述第一预编码矩阵和第二预编码矩阵得到第三预编码矩阵，包括：
将所述第三预编码矩阵表示为：
Figure PCTCN2014090811-appb-000010
其中，W为所述第三预编码矩阵，W1为所述第一预编码矩阵，W1中的第i个对角块对应第i组参考信号端口对应的加权值，其中，i的取值为1至M；W2为所述第二预编码矩阵，
Figure PCTCN2014090811-appb-000011
为第i+1组参考信号端口对应的加权值与第1组参考信号端口对应的加权值的相位差。
结合本发明实施例第五方面，或第五方面的第一种到第三种可能实现方式中任一种可能实现方式，在本发明实施例第五方面的第五种可能实现方式中：
所述根据所述第一预编码矩阵和第二预编码矩阵得到第三预编码矩阵，包括：将所述第三预编码矩阵表示为：
Figure PCTCN2014090811-appb-000012
其中，W为所述第三预编码矩阵，W1为所述第一预编码矩阵，W2为所述第二预编码矩阵，W2中的第i行对应第i组参考信号端口对应的加权值，其中，i的取值为1至M；
Figure PCTCN2014090811-appb-000013
为第i+1组参考信号端口对应的加权值与第1组参考信号端口对应的加权值的相位差。
本发明实施例第六方面提供一种参考信号的发送方法，所述方法包括：
配置N个参考信号端口的参考信号，N>＝6，所述N个参考信号端口由M组参考信号端口组成，M>＝1；
发送所述配置的N个参考信号端口的参考信号配置信息，并根据所述配置的N个参考信号端口及所述参考信号配置信息，发送参考信号；
所述参考信号用于接收设备基于所述配置的N个参考信号端口的参考信号进行信道状态信息CSI测量，得到根据第一预编码矩阵和/或第二预编码矩阵确定的第三预编码矩阵，根据所述第三预编码矩阵得到信道质量指示CQI；
其中，所述接收设备基于所述配置的N个参考信号端口的参考信号进行信道状态信息CSI测量，包括：分别对所述M组参考信号端口中每组端口的参考信号进行CSI测量，得到所述每组参考信号端口对应的加权值，并根据所述加权值得到所述第一预编码矩阵和/或第二预编码矩阵；
其中，在所述第一预编码矩阵中，所述任意两组参考信号端口对应的加权值相差一个相位项；和/或在所述第二预编码矩阵中，所述任意两组参考信号端口对应的加权值相差一个相位项。
本发明实施例第六方面的第一种可能实现方式中，所述方法还包括：
接收所述接收设备反馈的所述第三预编码矩阵对应的预编码矩阵指示符PMI和信道质量指示CQI，并根据所述PMI和CQI进行预编码操作。
结合本发明实施例第六方面，或第六方面的第一种可能实现方式，在本发明实施例第六方面的第二种可能实现方式中：
所述N小于等于总天线端口数。
结合本发明实施例第六方面，或第六方面的第一种到第二种可能实现方式中任一种可能实现方式，在本发明实施例第六方面的第三种可能实现方式中，所述相位项为
Figure PCTCN2014090811-appb-000014
的形式，其中
Figure PCTCN2014090811-appb-000015
为[0,2π]之间的一个角度。
结合本发明实施例第六方面，或第六方面的第一种到第三种可能实现方式中任一种可能实现方式，在本发明实施例第六方面的第四种可能实现方式中，
所述第三预编码矩阵表示为：
Figure PCTCN2014090811-appb-000016
其中，W为所述第三预编码矩阵，W1为所述第一预编码矩阵，W1中的第i个对角块对应第i组参考信号端口对应的加权值，其中，i的取值为1至M；W2为所述第二预编码矩阵，
Figure PCTCN2014090811-appb-000017
为第i+1组参考信号端口对应的加权值与第1组参考信号端口对应的加权值的相位差。
结合本发明实施例第六方面，或第六方面的第一种到第三种可能实现方式中任一种可能实现方式，在本发明实施例第六方面的第五种可能实现方式中：
所述第三预编码矩阵表示为：
Figure PCTCN2014090811-appb-000018
其中，W为所述第三预编码矩阵，W1为所述第一预编码矩阵，W2为所述第二预编码矩阵，W2中的第i行对应第i组参考信号端口对应的加权值，其中，i的取值为1至M；
Figure PCTCN2014090811-appb-000019
为第i+1组参考信号端口对应的加权值与第1组参考信号端口对应的加权值的相位差。
本发明实施例第七方面提供一种信道状态信息测量装置，所述装置包括：分别连接在总线上的收发器和处理器；
所述收发器，用于接收发送设备发送的参考信号配置信息和配置的N个 参考信号端口的参考信号；
所述处理器，用于对所述收发器接收的配置的N个参考信号端口的参考信号进行信道状态信息CSI测量；其中，所述N个参考信号端口由M组参考信号端口组成，且M>＝1；
其中，基于所述配置的N个参考信号端口的参考信号进行信道状态信息测量，包括：分别对所述M组参考信号端口中每组端口的参考信号进行CSI测量，得到所述每组参考信号端口对应的加权值，并根据所述加权值得到第一预编码矩阵和/或第二预编码矩阵；根据所述第一预编码矩阵和/或第二预编码矩阵得到第三预编码矩阵；根据所述第三预编码矩阵得到信道质量指示CQI；
其中，在所述第一预编码矩阵中，任意两组参考信号端口对应的加权值之间相差一个相位项；和/或，在所述第二预编码矩阵中，所述任意两组参考信号端口对应的加权值之间相差一个相位项。
本发明实施例第七方面的第一种可能实现方式中：
所述收发器，还用于向所述发送设备反馈所述处理器得到的第三预编码矩阵对应的预编码矩阵指示符PMI和信道质量指示CQI。
结合本发明实施例第七方面，或第七方面的第一种可能实现方式，在本发明实施例第七方面的第二种可能实现方式中：
所述N小于等于总天线端口数。
结合本发明实施例第七方面，或第七方面的第一种到第二种可能实现方式中任一种可能实现方式，在本发明实施例第七方面的第三种可能实现方式中，所述相位项为
Figure PCTCN2014090811-appb-000020
的形式，其中
Figure PCTCN2014090811-appb-000021
为[0,2π]之间的一个角度。
结合本发明实施例第七方面，或第七方面的第一种到第三种可能实现方式中任一种可能实现方式，在本发明实施例第七方面的第四种可能实现方式中，
所述处理器具体用于将所述第三预编码矩阵表示为：
Figure PCTCN2014090811-appb-000022
其中，W为所述第三预编码矩阵，W1为所述第一预编码矩阵，W1中的第i个对角块对应第i组参考信号端口对应的加权值，其中，i的取值为1至M；W2为所述第二预编码矩阵，
Figure PCTCN2014090811-appb-000023
为第i+1组参考信号端口对应的加权值与第1组参考信号端口对应的加权值的相位差。
结合本发明实施例第七方面，或第七方面的第一种到第三种可能实现方式中任一种可能实现方式，在本发明实施例第七方面的第五种可能实现方式中，
所述处理器具体用于将所述第三预编码矩阵表示为：
Figure PCTCN2014090811-appb-000024
其中，W为所述第三预编码矩阵，W1为所述第一预编码矩阵，W2为所述第二预编码矩阵，W2中的第i行对应第i组参考信号端口对应的加权值，其中，i的取值为1至M；
Figure PCTCN2014090811-appb-000025
为第i+1组参考信号端口对应的加权值与第1组参考信号端口对应的加权值的相位差。
本发明实施例第八方面提供一种参考信号的发送装置，所述装置包括：分别连接在总线的收发器和处理器，
所述处理器，用于配置N个参考信号端口的参考信号，N>＝6，所述N个参考信号端口由M组参考信号端口组成，M>＝1；
所述收发器，用于发送所述处理器配置的N个参考信号的参考信号配置信息，并根据所述配置的N个参考信号端口及所述参考信号配置信息，发送参考信号；
所述参考信号用于接收设备基于所述配置的N个参考信号端口的参考信号进行信道状态信息CSI测量，得到根据第一预编码矩阵和/或第二预编码矩阵确定的第三预编码矩阵，根据所述第三预编码矩阵得到信道质量指示CQI；
其中，所述接收设备基于所述配置的N个参考信号端口的参考信号进行信道状态信息CSI测量，包括：分别对所述M组参考信号端口中每组端口的参考信号进行CSI测量，得到所述每组参考信号端口对应的加权值，并根据所述加权值得到所述第一预编码矩阵和/或第二预编码矩阵；
其中，在第一预编码矩阵中，所述任意两组参考信号端口对应的加权值相差一个相位项；和/或，在第二预编码矩阵中，所述任意两组参考信号端口对应的加权值相差一个相位项。
本发明实施例第八方面的第一种可能实现方式中：
所述收发器，还用于接收所述接收设备反馈的所述第三预编码矩阵对应的预编码矩阵指示符PMI和信道质量指示CQI；
所述处理器，还用于根据所述收发器接收的PMI和CQI进行预编码操作。
结合本发明实施例第八方面，或第八方面的第一种可能实现方式，在本发明实施例第八方面的第二种可能实现方式中，
所述N小于等于总天线端口数。
结合本发明实施例第八方面，或第八方面的第一种到第二种可能实现方式中任一种可能实现方式，在本发明实施例第八方面的第三种可能实现方式中，所述相位项为
Figure PCTCN2014090811-appb-000026
的形式，其中
Figure PCTCN2014090811-appb-000027
为[0,2π]之间的一个角度。
结合本发明实施例第八方面，或第八方面的第一种到第三种可能实现方式中任一种可能实现方式，在本发明实施例第八方面的第四种可能实现方式中，
所述第三预编码矩阵表示为：
Figure PCTCN2014090811-appb-000028
其中，W为所述第三预编码矩阵，W1为所述第一预编码矩阵，W1中的第i个对角块对应第i组参考信号端口在对应的加权值，其中，i的取值为1至M；W2为所述第二预编码矩阵，
Figure PCTCN2014090811-appb-000029
为第i+1组参考信号端口对应的加权值与第1组参考信号端口对应的加权值的相位差。
结合本发明实施例第八方面，或第八方面的第一种到第三种可能实现方式中任一种可能实现方式，在本发明实施例第八方面的第五种可能实现方式中，
所述第三预编码矩阵表示为：
Figure PCTCN2014090811-appb-000030
其中，W为所述第三预编码矩阵，W1为所述第一预编码矩阵，W2为所述第二预编码矩阵，W2中的第i行对应第i组参考信号端口对应的加权值，其中，i的取值为1至M；
Figure PCTCN2014090811-appb-000031
为第i+1组参考信号端口对应的加权值与第1组参考信号端口对应的加权值的相位差。
本发明实施例提供一种信道状态信息测量方法和装置，利用CSI测量导频的相关性进行设计，大大减小了测量导频的开销，尤其是随着天线规模的增大，有效提高了数据传输的资源利用率。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1是本发明实施例一提供的一种信道状态信息测量方法流程简图；
图2是本发明实施例二提供的一种参考信号的发送方法流程简图；
图3是本发明实施例三提供的一种天线阵列示意简图；
图4是本发明实施例三提供的另一天线阵列示意简图；
图5是本发明实施例四提供的一种信道状态信息测量装置示意简图；
图6是本发明实施例五提供的一种参考信号的发送装置示意简图；
图7是本发明实施例六提供的一种信道状态信息测量方法流程简图；
图8是本发明实施例七提供的一种参考信号的发送方法流程简图；
图9是本发明实施例八中天线阵列被分成相等的4个天线组示意图；
图10是本发明实施例八中前两个天线组的预编码矩阵信息和后两个天线组的预编码矩阵信息共相位的示意图；
图11是本发明实施例八中相位差信息反映在W1中时相位差示意简图；
图12是本发明实施例九中相位差信息反映在W2中时相位差示意简图；
图13是本发明实施例十提供的一种信道状态信息测量装置示意简图；
图14是本发明实施例十一提供的一种参考信号的发送装置示意简图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
随着天线端口数目的增多，整个天线阵列被分为多个组，根据各天线组的相关性，进行相应的导频测量，可以用较少的导频测量来实现对整个天线阵列对应端口的CSI信息测量(包括预编码矩阵指示符PMI，信道质量指示CQI等)。
实施例一
本发明实施例提供了一种信道状态信息测量方法，本实施例的方法是接收设备比如用户设备或基站等用于接收信号的设备所执行的方法，流程图如图1所示，该方法包括：
步骤A1，接收发送设备发送的参考信号配置信息，接收配置的N个参考信号端口的参考信号；其中发送设备可以是用户设备或基站等用于发送信号的设备，且该发送设备与执行本实施例方法的接收设备相对应，比如当发送设备为用户设备，则接收设备为基站，当发送设备为基站，则接收设备为用户设备。
步骤A2，对配置的N个参考信号端口的参考信号进行信道状态信息CSI测量，其中，N>＝6，所述N个参考信号端口由M组参考信号端口组成，M>＝1。其中，参考信号配置信息是指发送设备在配置的N个参考信号端口上发送参考信号的必要信息，比如参考信号端口数、端口号、各个参考信号端口所占用的时频资源信息，和M组参考信号端口是如何分组的分组信息等，接收设备需要根据该参考信号配置信息才能接收N个参考信号端口的参考信号。
其中，步骤A1中配置的N个参考信号端口的参考信号，可以是由发送设 备在同一个子帧上发送的。还需要说明的是，所述M组参考信号端口中每组端口的参考信号端口数可以是总天线端口数的一个质数。这里总天线端口数可以是同小区的业务数据发射时的天线端口总数或基站侧天线配置所对应的天线端口总数。
其中，所述步骤A2中基于配置的N个参考信号端口的参考信号进行信道状态信息CSI测量，可以通过如下步骤A21到A23来实现，具体地：
步骤A21，分别对所述M组参考信号端口中每组端口的参考信号进行CSI测量，得到M个第一预编码矩阵，即Wi，其中i＝1，2，…，M；
步骤A22，根据所述第一预编码矩阵得到第二预编码矩阵W：
Figure PCTCN2014090811-appb-000032
即第二预编码矩阵W是由M个第一预编码矩阵直积得到的；
步骤A23，根据第二预编码矩阵得到信道质量指示即CQI。
进一步地，在其它具体的实施例中，接收设备可以向上述发送设备反馈测量得到的第二预编码矩阵对应的预编码矩阵指示符PMI和信道质量指示CQI；这样发射设备就可以根据PMI和CQI进行预编码操作。
本发明实施例提供的一种信道状态信息测量方法中，利用CSI测量导频的相关性进行设计，使得发送设备配置的端口数(即上述的M组端口)远小于发送设备实际发射数据时的端口数，比如发送设备实际发射数据的端口数为32，本发明实施例中可以将32个端口有效分组和虚拟加权最终得到5组参考信号端口(每组包含2个参考信号端口，共10个参考信号端口)，这样最终接收设备只需要对这10个端口的参考信号进行信道状态信息测量，与现有技术中接收设备需要对发送设备实际发射数据时的所有端口的参考信号进行CSI测量相比，本发明实施例中的方法大大减小了测量导频的开销，尤其是随着天线规模的增大，有效提高了数据传输的资源利用率。
实施例二
本发明实施例提供一种参考信号的发送方法，本实施例的方法是由用户设备或基站等用于发送信号的发送设备执行的方法，其该实施例中的方法是上述实施例一中方法所述的接收设备对应的发送设备所执行的方法，其中接收设备可以是用户设备或基站等用于接收信号的设备，且该接收设备与执行本实施例 方法的发送设备相对应，比如当发送设备为用户设备，则接收设备为基站，当发送设备为基站，则接收设备为用户设备。
本实施例中的方法流程图如图2所示，该方法包括：
步骤B1，配置N个参考信号端口，N>＝6，所述N个参考信号端口由M组参考信号端口组成，M>＝1。
步骤B2，发送N个参考信号端口的参考信号配置信息，根据所述配置的N个参考信号端口及参考信号端口的参考信号配置信息，发送所述N个参考信号端口的参考信号；其中参考信号配置信息是指发送设备在配置的N个参考信号端口上发送参考信号的必要信息，比如参考信号端口数，端口号、各个参考信号端口所占用的时频资源信息，和M组参考信号端口是如何分组的分组信息等，接收设备需要根据该参考信号配置信息才能接收N个参考信号端口的参考信号。
上述配置的N个参考信号端口的参考信号用于接收设备进行信道状态信息CSI测量，包括：分别对所述M组参考信号端口中每组端口的参考信号端口进行CSI测量，得到M个第一预编码矩阵，即Wi，其中i＝1，2，…，M；根据所述第一预编码得到第二预编码矩阵W：
Figure PCTCN2014090811-appb-000033
根据第二预编码矩阵得到信道质量指示CQI。
还需要说明的是，所述配置的N个参考信号端口的参考信号可以在同一个子帧上发送。M组参考信号端口中每组端口中的参考信号端口数可以为总天线端口数的一个质数。这里总天线端口数可以是同小区的业务数据发射时的天线端口总数或基站侧天线配置所对应的天线端口总数。
本发明实施例提供的一种参考信号的发送方法中，利用CSI测量导频的相关性进行设计，使得发送设备配置的端口数N(即上述M组端口)远小于发送设备实际发射数据时的端口数，这样最终接收设备只需要对这M组端口的参考信号进行信道状态信息测量，与现有技术中接收设备需要对发送设备实际发射数据时的所有端口的参考信号进行CSI测量相比，本发明实施例中的方法大大减小了测量导频的开销，尤其是随着天线规模的增大，有效提高了数据传输的资源利用率。
实施例三
本发明实施例提供了一种信道状态信息测量方法。
在对本发明实施例提供的方案说明之前，需要理解的是，所有天线端口的预编码矩阵指示符(PMI)，是由多个天线端口组的预编码矩阵指示符PMIm，(其中，PMIm代表了第m组天线端口的预编码矩阵指示符)联合得到，因此，可将专用于信道状态信息测量的信道状态信息参考信号(CSI-RS，Channel State Information-Reference Signal)的天线端口分为不同级的多个天线端口组，测量得到不同级的各个天线端口组的预编码矩阵指示符，从而得到所有天线端口总的预编码矩阵指示符。参见如下公式：
Figure PCTCN2014090811-appb-000034
测量不同级的CSI-RS端口的预编码矩阵指示符，等价于将测量参考信号在空域上进行多步拆解和分组。具体地，以如下的发送设备总天线端口数64为例，同极化方向的32个天线端口被分成了5组，其中，每个圈中同极化方向的各个物理天线端口，或者虚拟天线端口形成一个端口组。而全部的64个天线端口被分成了6组，每一组的物理或虚拟天线端口数为2，即64＝(2*2)*(2*2)*2*2。详细说明如下：
第一组的天线端口由同极化方向，如正45度极化方向的两个水平向天线端口组成。如图3中水平的椭圆虚线框1中正45度极化方向的2个水平向天线端口。
第二组天线端口由同极化方向的两个垂直向天线端口组成，如图3中竖直的椭圆虚线框2中正45度极化方向的2个垂直向天线端口。
第一组和第二组天线端口的CSI测量(包括预编码矩阵指示符和信道质量指示等)能保证得到水平向2天线端口和垂直向2天线端口所张成的第一级参考信号天线端口的信道状态信息(例如预编码矩阵指示符：PMI1等)。
第三组天线端口由两个水平向第一虚拟天线端口组成，其中，第一虚拟天线端口由第一级参考信号天线端口全向加权得到。如图3的圈3中的所有参考信号天线端口虚拟加权得到第二级的水平向虚拟端口一，而圈4中的所有参考信号天线端口虚拟加权得到第二级的水平向虚拟端口二，水平向的第二级虚拟端口一和第二级虚拟端口二再组成第三组天线端口。
第四组天线端口由两个垂直向第一虚拟天线端口组成，其中，第一虚拟天 线端口由第一级参考信号天线端口全向加权得到。如图3的圈3中的所有参考信号天线端口虚拟加权得到第二级的垂直向的虚拟端口一，而圈5中的所有参考信号天线端口虚拟加权得到第二级的垂直向虚拟端口二，垂直向的第二级虚拟端口一和第二级虚拟端口二再组成第四组天线端口。
第三组和第四组天线端口的CSI(包括预编码矩阵指示符和信道质量指示等)测量，可以保证得到两个水平向第一虚拟端口和两个垂直向第一虚拟端口所张成的第二级参考信号天线端口的信道状态信息(例如预编码矩阵指示符(PMI2)等)。
第五组天线端口由两个水平向的第二虚拟天线端口组成，该第二虚拟天线端口由第二级导频天线端口全向加权得到。即图3的圈11中的所有参考信号天线端口虚拟加权得到第三级的水平向虚拟端口一，而圈12中的所有参考信号天线端口虚拟加权得到第三级的水平向虚拟端口二，水平向的第三级虚拟端口一和第三级虚拟端口二再组成第五组天线端口。
第六组的天线端口由两个第三虚拟天线端口组成，其中，第一个第三虚拟天线端口对应第一个极化方向的所有天线端口虚拟加权得到的天线端口，而第二个第三虚拟天线端口对应第二个极化方向的所有天线端口虚拟加权得到的天线端口。
因此，总预编码矩阵信息的第一级维度对应天线阵列中的一个2*2的基本天线块(如图4中的最小圈所示的+45度极化方向的4个天线阵列)；总预编码矩阵信息的第二级维度对应天线阵列中由第一级维度组成的一个(2*2)*(2*2)的基本天线块(如图4中的次大圈所示的四个小圈组成的16个+45度极化方向的天线阵列)；总预编码矩阵信息的第三级维度对应天线阵列中第二级维度形成的一个基本块(下图中由两个次大圈组成的最大圈，由于这里次大圈的数目不足以形成完整的第三级维度，因此第三级维度对应的天线阵列是第二级维度对应的天线阵列块(2*2)*(2*2)在水平向的二维扩展(2*2)*(2*2)*2，因此得到的第一个极化方向的总预编码信息后(即第三级预编码)再扩展得到所有极化方向上的预编码矩阵信息64＝(2*2)*(2*2)*2*2。
运用上述说明的分组方案，需要测量的CSI-RS端口数(包括：物理天线端口和虚拟天线端口)如图4所示，即图4中标有数字的天线端口，其中，物 理天线端口包括：编号为1、2、3，4的4个天线端口，虚拟天线端口用图4中的圈所示虚拟天线端口包括：编号为5、6、7、8、9、10、11、12的虚拟天线端口，每个圆圈代表的CSI-RS端口为全向虚拟加权后的虚拟天线端口。
由于天线端口组之间的相关性，CSI测量所需的CSI-RS端口总数量为分解后的各级或者各组CSI-RS端口数的和。更进一步，所述CSI测量所需的CSI-RS端口数为总端口数量分解得到的所有最小质数的和，如当总端口数量为24时，由于24可分解为：24＝2*2*2*3，因此CSI测量所需的CSI-RS端口数为2+2+2+3个。考虑到LTE和LTE-A系统下的总天线端口数多为2的幂次，假定发射端的天线端口总数为2^n，而本方案所需测量的CSI-RS端口数仅为2*n。因此，该方案大大减少了导频设计的复杂度和导频开销。
根据上述对本发明实施例提供的方案的说明，该方案对于配置的N(其中，通常N>＝6)个CSI-RS端口进行CSI测量，其中，配置的N个CSI-RS端口在一个子帧中同时发送，该N个CSI-RS端口根据预定义准则被分成M组，其中，M为大于零的整数，根据所述每组中的CSI-RS端口(port)进行CSI测量，得到第一预编码矩阵Wm：Wm,m＝1,…,M，进一步根据所述第一预编码矩阵，得到第二预编码矩阵W：
Figure PCTCN2014090811-appb-000035
根据所述第二预编码矩阵，得到CQI，最后可以向发送设备反馈所述第二预编码矩阵PMI和CQI。
具体地以上述的总天线端口数64为例，M组中的每组包含2个CSI-RS端口，在本发明实施例提供的方法中：
(1)根据所述每组中的2个CSI-RS port进行CSI测量，得到第一预编码矩阵：
Figure PCTCN2014090811-appb-000036
其中，m为第m个第一预编码矩阵，而rm为所述第m个第一预编码矩阵的秩。
(2)根据所述第一预编码矩阵，得到第二预编码矩阵W：
Figure PCTCN2014090811-appb-000037
实施例四
本发明实施例提供一种信道状态信息测量装置，即上述实施例一中所述的接收设备，如图5所示，所述装置包括：分别连接到总线上的收发器501和处理器502；其中，参考信号配置信息是指发送设备在配置的N个参考信号端口上发送参考信号的必要信息，比如参考信号端口数、端口号、各个参考信号端 口所占用的时频资源信息，和M组参考信号端口是如何分组的分组信息等，接收设备需要根据该参考信号配置信息才能接收N个参考信号端口的参考信号。
所述收发器501，用于接收发送设备发送的参考信号配置信息和配置的N个参考信号端口的参考信号；
所述处理器502，用于基于所述收发器501接收的配置的N个参考信号端口的参考信号进行信道状态信息CSI测量，其中，N>＝6，所述N个参考信号端口由M组参考信号端口组成，M>＝1。
其中，所述基于配置的N个参考信号端口的参考信号进行信道状态信息CSI测量，包括：分别对所述M组参考信号端口中每组端口的参考信号进行CSI测量，得到M个第一预编码矩阵，即Wi，其中i＝1，2，…，M；根据所述第一预编码矩阵得到第二预编码矩阵W：
Figure PCTCN2014090811-appb-000038
根据第二预编码矩阵得到信道质量指示CQI；
可选的，所述收发器501，还具体用于接收所述发送设备在同一个子帧上发送的所述配置的N个参考信号端口的参考信号。可选的，所述M组参考信号端口中每组端口的参考信号端口数为总天线端口数的一个质数。
进一步地，在其它具体的实施例中，收发器501还用于向上述发送设备反馈第二预编码矩阵对应的预编码矩阵指示符PMI和信道质量指示CQI，以使得发送设备进行预编码。
本发明实施例提供的一种信道状态信息测量装置，利用CSI测量导频的相关性进行设计，使得发送设备配置的端口数(即上述M组)远小于发送设备实际发射数据时的端口数，这样最终本实施例中装置的处理器502只需要对这M组端口的参考信号进行信道状态信息测量，与现有技术中需要对接收设备需要对发送设备实际发射数据时的所有端口的参考信号进行CSI测量相比，大大减小了测量导频的开销，尤其是随着天线规模的增大，有效提高了数据传输的资源利用率。
实施例五
本发明实施例提供一种参考信号的发送装置，即上述的实施例二中所述的发送设备，如图6所示，所述装置包括：分别连接在总线上的处理器601和收 发器602，
所述处理器601，用于配置N个参考信号端口，N>＝6，所述N个参考信号端口由M组参考信号端口组成，M>＝1；
所述收发器602，用于发送处理器601配置的N歌参考信号端口的参考信号配置信息，并根据所述配置的N个参考信号端口及所述参考信号配置信息，发送配置的N个参考信号端口的参考信号；其中参考信号配置信息是指发送设备在配置的N个参考信号端口上发送参考信号的必要信息，比如参考信号端口数、端口号、各个参考信号端口所占用的时频资源信息，和M组参考信号端口是如何分组的分组信息等，接收设备需要根据该参考信号配置信息才能接收N个参考信号端口的参考信号。
其中，配置的N个参考信号端口的参考信号用于接收设备对配置的N个参考信号端口的参考信号进行信道状态信息CSI测量，包括：分别对所述M组参考信号端口中每组端口的参考信号进行CSI测量，得到M个第一预编码矩阵，即Wi，其中i＝1，2，…，M；根据所述第一预编码得到第二预编码矩阵W：
Figure PCTCN2014090811-appb-000039
根据第二预编码矩阵得到信道质量指示CQI。
进一步地，本实施例中的所述收发器602，还用于接收所述接收设备反馈的第二预编码矩阵对应的预编码矩阵指示符PMI和信道质量指示CQI；则所述处理器601，还用于根据所述收发器601接收的第二预编码矩阵对应的预编码矩阵指示符PMI和信道质量指示CQI进行预编码操作。
可选的，所述收发器602，具体用于将所述配置的N个参考信号端口的参考信号在同一个子帧上发送。可选的，所述M组参考信号端口中每组端口的参考信号端口数为总天线端口数的一个质数。
本发明实施例提供的一种参考信号的发送装置，利用CSI测量导频的相关性进行设计，使得本实施例中装置的处理器601配置的端口数(即M组)远小于实际发射数据时的端口数，这样最终接收设备只需要对这M组端口的参考信号进行信道状态信息测量，与现有技术中需要对接收设备需要对发送设备实际发射数据时的所有端口的参考信号进行CSI测量相比，大大减小了测量导频的开销，尤其是随着天线规模的增大，有效提高了数据传输的资源利用率。
实施例六
本发明实施例提供一种信道状态信息测量方法，本实施例中的方法是接收设备所执行的另一种信道状态信息测量方法，如图7所示，该方法包括：
步骤C1，接收发送设备发送的参考信号配置信息和配置的N个参考信号端口的参考信号。其中，N的取值可以小于或等于总天线端口数。其中发送设备可以是用户设备或基站等用于发送信号的设备，且该发送设备与执行本实施例方法的接收设备相对应，比如当发送设备为用户设备，则接收设备为基站，当发送设备为基站，则接收设备为用户设备。
步骤C2，对所述配置的N个参考信号端口的参考信号进行信道状态信息CSI测量；其中，所述N个参考信号端口由M组参考信号端口组成，且M>＝1。
其中，基于所述配置的N个参考信号端口的参考信号进行信道状态信息CSI测量具体可以通过如下步骤C21到C23，具体地，
步骤C21，分别对所述M组参考信号端口中每组端口的参考信号进行CSI测量，得到所述每组参考信号端口对应的加权值，并根据所述加权值得到第一预编码矩阵和/或第二预编码矩阵，使得该加权值对应第一预编码矩阵和/或第二预编码矩阵中的某一组成部分。其中在第一预编码矩阵中，任意两组参考信号端口对应的加权值之间相差一个相位项；和/或，在第二预编码矩阵中，所述任意两组参考信号端口对应的加权值之间相差一个相位项。其中，所述相位项为
Figure PCTCN2014090811-appb-000040
的形式，其中
Figure PCTCN2014090811-appb-000041
为[0,2π]之间的一个角度。
步骤C22，根据上述步骤C21中得到的第一预编码矩阵和/或第二预编码矩阵得到第三预编码矩阵。具体地，该第三预编码矩阵可以由第一预编码矩阵和/或第二预编码矩阵进行一定的运算得到。
具体地，在根据加权值得到第一预编码矩阵时，需要在第一预编码矩阵中，任意两组参考信号端口对应的加权值之间相差一个相位项，则在根据第一预编码矩阵得到第三预编码矩阵时，如果最终预编码矩阵采用双码本结构，可以由第一预编码矩阵与另一预编码矩阵运算(主要是相乘)得到第三预编码矩阵，其中另一预编码矩阵可以采用第三代合作项目(3rd Generation Partnership Project，3GPP)第8或10版本的码本结构，比如复用第10版本的双码本结构形式中的一个码本，第一预编码矩阵W1可以为：
Figure PCTCN2014090811-appb-000042
或
Figure PCTCN2014090811-appb-000043
其中，W1i(i＝1,2,…M)为第i组参考信号端口在第一预编码矩阵中的组成部分，该组成部分中可以包括所述考信号端口的加权值，用来调节发射信号的相位。
在根据加权值得到第二预编码矩阵W2时，需要在第二预编码矩阵中，任意两组参考信号端口对应的加权值之间相差一个相位项，则在根据第二预编码矩阵得到第三预编码矩阵时，如果最终预编码矩阵采用双码本结构，可以由另一预编码矩阵与第二预编码矩阵W2进行运算(主要是相乘)得到第三预编码矩阵，其中另一预编码矩阵可以采用3GPP第8或10版本的码本结构，比如复用第10版本的双码本结构形式中的一个码本，其中，第二预编码矩阵W2的结构与上述第一预编码矩阵的结构类似。
在根据加权值得到第一预编码矩阵W1和第二预编码矩阵W2时，需要在第二预编码矩阵中，任意两组参考信号端口对应的加权值之间相差一个相位项，且在第一预编码矩阵中，任意两组参考信号端口对应的加权值之间相差一个相位项。则在根据第一预编码矩阵和第二预编码矩阵得到第三预编码矩阵时，如果最终预编码矩阵采用双码本结构，可以由第一预编码矩阵W1与第二预编码矩阵W2进行运算(主要是相乘)得到第三预编码矩阵。
步骤C23，根据第三预编码矩阵得到信道质量指示CQI；
进一步地，本实施例中在得到第三预编码矩阵后，还可以向上述发送设备反馈第三预编码矩阵对应的预编码矩阵指示符PMI和信道质量指示CQI，以使得发送设备根据PMI和CQI进行预编码操作。
可选的，上述步骤C22中根据第一预编码矩阵和第二预编码矩阵得到第三预编码矩阵时，具体可以将所述第三预编码矩阵表示为：
Figure PCTCN2014090811-appb-000044
其中，W为第三预编码矩阵，W1为第一预编码矩阵，W1中的第i个对角块对应第i组参考信号端口对应的加权值，其中，i的取值为1至M；W2为第二预编码矩阵，
Figure PCTCN2014090811-appb-000045
为第i+1组参考信号端口对应的加权值与第1组参考信号端口对应的加权值的相位差。
或者，可选的，在上述步骤C21中根据第一预编码矩阵和第二预编码矩阵得到第三预编码矩阵时，其中，具体是将所述第三预编码矩阵表示为：
Figure PCTCN2014090811-appb-000046
其中，W为第三预编码矩阵，W1为第一预编码矩阵，W2为第二预编码矩阵，W2中的第i行对应第i组参考信号端口对应的加权值，其中，i的取值为1至M；
Figure PCTCN2014090811-appb-000047
为第i+1组参考信号端口对应的加权值与第1组参考信号端口对应的加权值的相位差。
本发明实施例提供的一种信道状态信息测量方法，该方案利用CSI测量参考信号端口间的相关性进行设计，使得发送设备配置的端口数(即M组)小于发送设备实际发射数据时的端口数，这样最终接收设备只需要对这M组端口的参考信号进行信道状态信息测量，与现有技术中接收设备需要对发送设备实际发射数据时的所有端口的参考信号进行CSI测量相比，本发明实施例中的方法大大减小了测量导频的开销，尤其是随着天线规模的增大，有效提高了数据传输的资源利用率。
实施例七
本发明实施例提供一种参考信号的发送方法，本实施例的方法是发送设备所执行的方法，是上述实施例六所述方法中与接收设备相对应的发送设备所执行的方法，其中接收设备可以是用户设备或基站等用于接收信号的设备，且该接收设备与执行本实施例方法的发送设备相对应，比如当发送设备为用户设备，则接收设备为基站，当发送设备为基站，则接收设备为用户设备。
本实施例中的方法流程图如图8所示，该方法包括：
步骤D1，配置N个参考信号端口的参考信号，所述N个参考信号端口 由M组端口组成，M>＝1；
步骤D2，发送所述配置的N个参考信号端口的参考信号配置信息，并根据所述配置的N个参考信号端口及参考信号配置信息，发送参考信号，所述参考信号用于接收设备基于所述配置的N个参考信号端口的参考信号进行信道状态信息CSI测量，得到根据第一预编码矩阵和/或第二预编码矩阵确定的第三预编码矩阵，根据第三预编码矩阵得到信道质量指示CQI。其中接收设备在具体得到第三预编码矩阵的过程可以如上述实施例六所述，在此不进行赘述。
其中，所述接收设备基于所述配置的N个参考信号端口的参考信号进行信道状态信息CSI测量，包括：分别对所述M组参考信号端口中每组端口的参考信号进行CSI测量，得到所述每组参考信号端口对应的加权值，并根据所述加权值得到所述第一预编码矩阵和/或第二预编码矩阵，以使得所述加权值为第一预编码矩阵和/或第二预编码矩阵中的某一组成部分。
其中，在第一预编码矩阵中，所述任意两组参考信号端口对应的加权值的相差一个相位项；和/或，在第二预编码矩阵中，所述任意两组参考信号端口对应的加权值相差一个相位项；且得到的第三预编码矩阵可以是由第一预编码矩阵和第二预编码矩阵进行一定运算得到的，具体见上述实施例六所示，在此不进行赘述。所述相位项可以为
Figure PCTCN2014090811-appb-000048
的形式，其中
Figure PCTCN2014090811-appb-000049
为[0,2π]之间的一个角度。
需要说明的是，上述N的取值可以小于或等于总天线端口数。
进一步地，本实施例的发送设备还可以接收上述接收设备反馈的第三预编码矩阵对应的指示符PMI和信道质量指示CQI；则根据该PMI和CQI进行预编码操作。
本发明实施例提供的一种参考信号的发送方法，该方案利用CSI测量导频的相关性进行设计，具体地，可以由发送设备配置M组参考信号端口，而接收设备只需要对M组参考信号端口的参考信号进行信道状态信息测量，而M组参考信号端口数小于实际发射数据时的端口数，这样与现有技术中接收设备需要对发送设备实际发射数据时的所有端口的参考信号进行CSI测量相比，本发明实施例中的方法大大减小了测量导频的开销，尤其是随着天线规模的增大，有效提高了数据传输的资源利用率。
实施例八
本发明实施例提供了一种信道状态信息测量方法，随着天线规模的增大，天线数量的增加，阵列中所有天线间的相关性，可被拆分成多个天线组的相关性进行表示，即各个天线组间的相关性组成了整个天线阵列的天线间的相关性。如图9所示整个天线阵列被分成相等的4个天线组(group)1到4。
现有技术中，用阵列所有天线端口的CSI测量来获得相应的PMI信息。从而，当天线规模较大时所需要的测量参考信号开销将很庞大。
随着天线规模的增大，各天线间的相关性进一步变大。如图10所示前两个天线组1和2组成的组Wx的预编码矩阵指示符和后两个天线组3和4组成的组Wy的预编码矩阵指示符之间是共相位(Co-phasing)W的。
利用各天线组间的相关性，做相关域差分，即第一个天线组测量得到预编码指示符PMI后，相邻的第二个天线组仅需测量得到其与第一个天线组的相位差信息，由于只是测量得到相位差信息而不需再测量得到与第一个天线组相同的预编码矩阵指示符PMI，从而可大大减少所需的测量导频的开销。具体地：
如图11所示(这里假定相位差信息反映在W1中)，需要理解的是，对于基站或者用户设备中由预定的方法或高层配置的方法决定相位差信息反映在第一预编码矩阵，或者反映在第二预编码矩阵。第二组2的PMI与第一组1的PMI相差一个相位Offset，第三组3的PMI与第二组2的PMI相差一个相位Offset。而各组的PMI间的相位Offset可以反映在W1中。
本发明实施例提供的方案将阵列中的所有的参考信号天线端口分组，不同组的测量参考信号端口完成不同的预编码矩阵指示符测量。
如第一组1测量参考信号端口用来测量得到第一组1包含的天线端口所对应的预编码矩阵指示符。
而第二组1测量参考信号端口用来测量得到第二组2包含的天线端口所对应的预编码指示符与第一组1包含的天线端口所对应的预编码指示符的相位差。
第三组3测量参考信号端口用来测量得到第三组3包含的天线端口所对应的预编码指示符与第二组2包含的天线端口所对应的预编码指示符的相位差， 以此类推。
其中，第一组1测量参考信号端口可以是图11中Group1中的所有天线端口，而第二组2参考信号端口可以由图11中Group1中的第i个天线端口和Group 2中的第i个天线端口组成，其中，i＝1,…,Ngroup1，该Ngroup1是Group1中的天线端口数。第三组3参考信号端口可以由上图Group2中的第i个天线端口和Group 3中的第i个天线端口组成，其中，i＝1,…,Ngroup2，该Ngroup3是Group3中的天线端口数。
假定整个天线阵列被分成M组，则整个天线阵列的第一预编码矩阵为由N个块组成的块对角阵。第一组1参考信号端口测量得到的预编码矩阵为整个天线阵列的第一预编码矩阵W1的第1个块，记为
Figure PCTCN2014090811-appb-000050
除第一组1外的其它组相对于第一组1的相位差信息分别为
Figure PCTCN2014090811-appb-000051
因此其它组的预编码矩阵分别对应整个天线阵列的第一预编码矩阵W1的第i个块(i＝2,…,M),记为
Figure PCTCN2014090811-appb-000052
上述测量参考信号测量得到的整个天线阵列的预编码矩阵结构可表示如下：
Figure PCTCN2014090811-appb-000053
实施例九
本发明实施例提供了一种信道状态信息测量方法，随着天线规模的变大，天线数量的增加，阵列中所有天线间的相关性，可被拆分成多个天线组的相关性来表示，即各个天线组间的相关性组成了整个天线阵列的天线间的相关性。整个天线阵列被分成相等的4个天线组可以如上述图9所示。
现有技术中，用阵列所有天线端口的CSI测量来获得相应的PMI信息，当天线规模较大时所需要的测量参考信号开销将很庞大。
随着天线规模的增大，各天线间的相关性进一步变大。前两个天线组1和2的预编码矩阵指示符和后两个天线组3和4的预编码矩阵指示符是共相位的，可以如上述图10所示。
利用各天线组间的相关性，做相关域差分，相关域差分即利用各天线端口组对应的预编码矩阵的相关性进行差分，可以理解为，第一个天线端口组测量 得到相应的预编码指示符PMI的信息后，相邻的第二个天线端口组测量得到其与第一个天线端口组的相位差信息，由于只是测量得到相位差信息而不需再测量得到与第一个天线端口组相同的预编码矩阵指示符PMI的信息，从而可大大减少所需的测量导频的开销。具体地，
如图12所示(这里假定相位差信息反映在W2中)，第二组天线端口的PMI与第一组天线端口的PMI相差一个相位Offset，第三组天线端口的PMI与第二组天线端口的PMI相差一个相位Offset。而各组天线端口的PMI间的相位Offset可以由W2来反映。
本发明实施例提供的方案将阵列中的所有天线端口分组，不同组的参考信号端口完成不同的预编码矩阵指示符测量，具体测量与上述实施例八中国的测量类似，在此不进行赘述。
假定整个天线阵列被分成M组，则整个天线阵列的第二预编码矩阵为由N个矩阵块组成的列向量。第一组1参考信号端口测量得到的预编码矩阵为整个天线阵列的第二预编码矩阵W2的第一行元素，记为Y1，除第一组1外的其它组相对于第一组1的相位差信息分别为
Figure PCTCN2014090811-appb-000054
因此其它组的预编码矩阵分别对应整个天线阵列的第二预编码矩阵W2的第i行(i＝2,…,M),记为
Figure PCTCN2014090811-appb-000055
上述测量参考信号端口得到的整个天线阵列的预编码矩阵结构可表示如下：
Figure PCTCN2014090811-appb-000056
总结上述实施例六、七提供的方案，是根据配置的N个测量参考信号端口进行CSI测量，所述测量得到的CSI信息中的预编码矩阵指示符由如下M个部分组成，
所述M个部分包括第一预编码矩阵W1，第一相位信息，第二相位信息直到第M-1相位信息。所述第一预编码矩阵可以是长期宽带预编码矩阵指示符，或短期/子带预编码矩阵指示符；
最终的预编码矩阵可以为：
Figure PCTCN2014090811-appb-000057
或：
Figure PCTCN2014090811-appb-000058
实施例十
本发明实施例提供一种信道状态信息测量装置，即上述实施例六中所述的接收设备，如图13所示，所述装置包括：分别连接在总线上的收发器131和处理器132；
所述收发器131，用于接收发送设备发送的参考信号配置信息和配置的N个参考信号端口的参考信号；其中，N的取值可以小于或等于总天线端口数。
所述处理器132，用于对所述收发器131接收的配置的N个参考信号端口的参考信号进行信道状态信息CSI测量；其中，所述N个参考信号端口由M组参考信号端口组成，且M>＝1。
其中，处理器132在基于所述配置的N个参考信号端口的参考信号进行信道状态信息CSI测量时，具体地：分别对所述M组参考信号端口中每组端口的参考信号进行CSI测量，得到所述每组参考信号端口对应的加权值，并根据所述加权值得到第一预编码矩阵和/或第二预编码矩阵，使得该加权值对应第一预编码矩阵和/或第二预编码矩阵中的某一组成部分；根据第一预编码矩阵和/或第二预编码矩阵得到第三预编码矩阵；根据第三预编码矩阵得到信道质量指示CQI。其中处理器132在具体得到第三预编码矩阵的过程可以如上述实施例六所述，在此不进行赘述。
其中，在第一预编码矩阵中，任意两组参考信号端口对应的加权值之间相差一个相位项；和/或，在第二预编码矩阵中，所述任意两组参考信号端口对应的加权值之间相差一个相位项，这里所述相位项可以为
Figure PCTCN2014090811-appb-000059
的形式，其中
Figure PCTCN2014090811-appb-000060
可以为[0,2π]之间的一个角度且处理器132在得到第三预编码矩阵时，可以由第 一预编码矩阵和第二预编码矩阵进行一定的运算得到，且得到的第三预编码矩阵可以如上述实施例六中所述，在此不进行赘述。
进一步地，在其它具体的实施例中，收发器131还可以用于向上述发送设备反馈第三预编码矩阵对应的预编码矩阵指示符PMI和信道质量指示CQI，以使得发送设备根据PMI和CQI进行预编码操作。
本发明实施例提供的一种信道状态信息测量装置，利用CSI测量参考信号端口间的相关性进行设计，使得发送设备配置的端口数小于发送设备实际发射数据时的端口数，这样本实施例中装置的处理器132只需要对这M(远远小于实际发射数据的端口数)组端口的参考信号进行信道状态信息测量，与现有技术中接收设备需要对发送设备实际发射数据时的所有端口的参考信号进行CSI测量相比，大大减小了测量参考端口的开销，尤其是随着天线规模的增大，有效提高了数据传输的资源利用率。
实施例十一
本发明实施例提供一种参考信号的发送装置，即上述实施例七中所述的发送设备，如图14所示，所述装置包括：连接在总线上的收发器141和处理器142，
所述处理器142，用于配置N个参考信号端口的参考信号，N>＝6，所述N个参考信号端口由M组参考信号端口组成，M>＝1；
所述收发器141，用于发送所述处理器142配置的N个参考信号端口的参考信号配置信息，并根据所述配置的N个参考信号端口及参考信号配置信息，发送参考信号，所述参考信号用于接收设备基于所述配置的N个参考信号端口的参考信号进行信道状态信息CSI测量，得到根据第一预编码矩阵和/或第二预编码矩阵确定的第三预编码矩阵，根据第三预编码矩阵得到信道质量指示CQI。其中第三预编码矩阵可以如上述实施例七中所示，在此不进行赘述。
其中，所述接收设备基于所述配置的N个参考信号端口的参考信号进行信道状态信息CSI测量，包括：分别对所述M组参考信号端口中每组端口的参考信号进行CSI测量，得到所述每组参考信号端口对应的加权值，并根据所述加权值得到所述第一预编码矩阵和/或第二预编码矩阵，以使得所述加权值为第一预编码矩阵和/或第二预编码矩阵中的某一组成部分。其中接收设备在 具体得到第三预编码矩阵的过程可以如上述实施例六所述，在此不进行赘述。
其中，在第一预编码矩阵中，所述任意两组参考信号端口对应的加权值的相差一个相位项；和/或，在第二预编码矩阵中，所述任意两组参考信号端口对应的加权值相差一个相位项；且得到的第三预编码矩阵可以是由第一预编码矩阵和第二预编码矩阵进行一定运算得到的，具体见上述实施例六所示，在此不进行赘述。这里所述相位项可以为
Figure PCTCN2014090811-appb-000061
的形式，其中
Figure PCTCN2014090811-appb-000062
可以为[0,2π]之间的一个角度。
需要说明的是，上述N的取值可以小于或等于总天线端口数。
进一步地，本实施例的收发器141，还用于接收上述接收设备反馈的第三预编码矩阵对应的指示符PMI和信道质量指示CQI；则处理器142，还用于根据收发器141接收的该PMI和CQI进行预编码操作。
本发明实施例提供的一种参考信号的发送装置，该方案利用CSI测量导频的相关性进行设计，具体地，可以由处理器142配置M组端口，而接收设备只需要对M组端口的参考信号进行信道状态信息测量，而M组参考信号的端口数小于实际发射数据时的端口数，这样与现有技术中接收设备需要对发送设备实际发射数据时的所有端口的参考信号进行CSI测量相比，大大减小了测量导频的开销，尤其是随着天线规模的增大，有效提高了数据传输的资源利用率。
本领域普通技术人员可以理解上述实施例的各种方法中的全部或部分步骤是可以通过程序来指令相关的硬件来完成，该程序可以存储于一计算机可读存储介质中，存储介质可以包括：ROM、RAM、磁盘或光盘等。
以上对本发明实施例所提供的一种信道状态信息测量、参考信号的发送方法和装置，进行了详细介绍，本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想；同时，对于本领域的一般技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本发明的限制。

Claims (40)

  1. 一种信道状态信息测量方法，其特征在于，所述方法包括：
    接收发送设备发送的参考信号配置信息和配置的N个参考信号端口的参考信号；
    基于所述配置的N个参考信号端口的参考信号进行信道状态信息CSI测量，其中，N>＝6，所述N个参考信号端口由M组参考信号端口组成，M>＝1；
    其中，所述基于配置的N个参考信号端口的参考信号进行信道状态信息CSI测量，包括：分别对所述M组参考信号端口中每组端口的参考信号进行CSI测量，得到M个第一预编码矩阵，即Wi，其中i＝1，2，…，M；根据所述第一预编码矩阵得到第二预编码矩阵W：
    Figure PCTCN2014090811-appb-100001
    根据所述第二预编码矩阵得到信道质量指示CQI。
  2. 如权利要求1所述的方法，其特征在于，所述方法还包括：
    向所述发送设备反馈所述第二预编码矩阵对应的预编码矩阵指示符PMI和所述信道质量指示CQI。
  3. 根据权利要求1或2所述的方法，其特征在于，
    所述配置的N个参考信号端口的参考信号，由所述发送设备在同一个子帧上发送。
  4. 根据权利要求1至3任一项所述的方法，其特征在于，
    所述M组参考信号端口中每组端口的参考信号端口数为总天线端口数的一个质数。
  5. 一种参考信号的发送方法，其特征在于，所述方法包括：
    配置N个参考信号端口，N>＝6，所述N个参考信号端口由M组参考信号端口组成，M>＝1；
    发送所述N个参考信号端口的参考信号配置信息；
    根据所述配置的N个参考信号端口及所述参考信号配置信息，发送所述配置的N个参考信号端口的参考信号；
    其中，所述配置的N个参考信号端口的参考信号用于接收设备对所述配置的N个参考信号端口的参考信号进行信道状态信息CSI测量，包括：分别对所述M组参考信号端口中每组端口的参考信号进行CSI测量，得到M个第 一预编码矩阵，即Wi，其中i＝1，2，…，M；根据所述第一预编码矩阵得到第二预编码矩阵W：
    Figure PCTCN2014090811-appb-100002
    根据所述第二预编码矩阵得到信道质量指示CQI。
  6. 如权利要求5所述的方法，其特征在于，所述方法还包括：
    接收所述接收设备反馈的所述第二预编码矩阵对应的预编码矩阵指示符PMI和所述信道质量指示CQI，并根据所述PMI和CQI进行预编码操作。
  7. 根据权利要求5或6所述的方法，其特征在于，
    所述配置的N个参考信号端口的参考信号在同一个子帧上发送。
  8. 根据权利要求5至7任一项所述的方法，其特征在于，
    所述M组参考信号端口中每组端口的参考信号端口数为总天线端口数的一个质数。
  9. 一种信道状态信息测量装置，其特征在于，所述装置包括：分别连接到总线上的收发器和处理器；
    所述收发器，用于接收发送设备发送的参考信号配置信息和配置的N个参考信号端口的参考信号；
    所述处理器，用于基于所述收发器接收的配置的N个参考信号端口的参考信号进行信道状态信息CSI测量，其中，N>＝6，所述N个参考信号端口由M组参考信号端口组成，M>＝1；
    其中，所述基于配置的N个参考信号端口的参考信号进行信道状态信息CSI测量，包括：分别对所述M组参考信号端口中每组端口的参考信号进行CSI测量，得到M个第一预编码矩阵，即Wi，其中i＝1，2，…，M；根据所述第一预编码矩阵得到第二预编码矩阵W：
    Figure PCTCN2014090811-appb-100003
    根据所述第二预编码矩阵得到信道质量指示CQI；
  10. 如权利要求9所述的装置，其特征在于，
    所述收发器，还用于向所述发送设备反馈所述第二预编码矩阵对应的预编码矩阵指示符PMI和信道质量指示CQI。
  11. 根据权利要求9或10所述装置，其特征在于，所述收发器，还用于接收所述发送设备在同一个子帧上发送的所述配置的N个参考信号端口的参考信号。
  12. 根据权利要求9至11任一项所述装置，其特征在于，所述M组参考信号端口中每组端口的参考信号端口数为总天线端口数的一个质数。
  13. 一种参考信号的发送装置，其特征在于，所述发送设备包括：分别连接到总线上的处理器和收发器，
    所述处理器，用于配置N个参考信号端口，N>＝6，所述N个参考信号端口由M组参考信号端口组成，M>＝1；
    所述收发器，用于发送所述处理器配置的N个参考信号端口的参考信号配置信息，根据所述配置的N个参考信号端口及所述参考信号配置信息，发送所述配置的N个参考信号端口的参考信号；其中，配置的N个参考信号端口的参考信号用于接收设备对所述配置的N个参考信号端口的参考信号进行信道状态信息CSI测量，包括：分别对所述M组参考信号端口中每组端口的参考信号进行CSI测量，得到M个第一预编码矩阵，即Wi，其中i＝1，2，…，M；根据所述第一预编码矩阵得到第二预编码矩阵W：
    Figure PCTCN2014090811-appb-100004
    根据所述第二预编码矩阵得到信道质量指示CQI。
  14. 如权利13所述的装置，其特征在于，
    所述收发器，还用于接收所述接收设备反馈的所述第二预编码矩阵对应的预编码矩阵指示符PMI和信道质量指示CQI；
    所述处理器，还用于根据所述收发器接收的所述第二预编码矩阵对应的预编码矩阵指示符PMI和信道质量指示CQI进行预编码操作。
  15. 根据权利要求13或14所述装置，其特征在于，所述收发器，具体用于将所述配置的N个参考信号端口的参考信号在同一个子帧上发送。
  16. 根据权利要求13至15任一项所述装置，其特征在于，
    所述M组参考信号端口中每组端口中的参考信号端口数为总天线端口数的一个质数。
  17. 一种信道状态信息测量方法，其特征在于，所述方法包括：
    接收发送设备发送的参考信号配置信息和配置的N个参考信号端口的参考信号；
    对所述配置的N个参考信号端口的参考信号进行信道状态信息CSI测量；其中，所述N个参考信号端口由M组参考信号端口组成，且M>＝1；
    其中，基于所述配置的N个参考信号端口的参考信号进行信道状态信息测量，包括：分别对所述M组参考信号端口中每组端口的参考信号进行CSI测量，得到所述每组参考信号端口对应的加权值，并根据所述加权值得到第一预编码矩阵和/或第二预编码矩阵；根据所述第一预编码矩阵和/或第二预编码矩阵得到第三预编码矩阵；根据所述第三预编码矩阵得到信道质量指示CQI；
    其中，在所述第一预编码矩阵中，任意两组参考信号端口对应的加权值之间相差一个相位项；和/或在所述第二预编码矩阵中，所述任意两组参考信号端口对应的加权值之间相差一个相位项。
  18. 如权利要求17所述的方法，其特征在于，所述方法还包括：
    向所述发送设备反馈所述第三预编码矩阵对应的预编码矩阵指示符PMI和信道质量指示CQI。
  19. 根据权利要求17或18所述的方法，其特征在于，
    所述N小于等于总天线端口数。
  20. 根据权利要求17至19任一项所述的方法，其特征在于，所述相位项为
    Figure PCTCN2014090811-appb-100005
    的形式，其中
    Figure PCTCN2014090811-appb-100006
    为[0,2π]之间的一个角度。
  21. 根据权利要求17～20任一项所述的方法，其特征在于，所述根据所述第一预编码矩阵和第二预编码矩阵得到第三预编码矩阵，包括：
    将所述第三预编码矩阵表示为：
    Figure PCTCN2014090811-appb-100007
    其中，W为所述第三预编码矩阵，W1为所述第一预编码矩阵，W1中的第i个对角块对应第i组参考信号端口对应的加权值，其中，i的取值为1至M；W2为所述第二预编码矩阵，
    Figure PCTCN2014090811-appb-100008
    为第i+1组参考信号端口对应的加权值与第1组参考信号端口对应的加权值的相位差。
  22. 根据权利要求17～20任一项所述的方法，其特征在于，
    所述根据所述第一预编码矩阵和第二预编码矩阵得到第三预编码矩阵，包 括：将所述第三预编码矩阵表示为：
    Figure PCTCN2014090811-appb-100009
    其中，W为所述第三预编码矩阵，W1为所述第一预编码矩阵，W2为所述第二预编码矩阵，W2中的第i行对应第i组参考信号端口对应的加权值，其中，i的取值为1至M；
    Figure PCTCN2014090811-appb-100010
    为第i+1组参考信号端口对应的加权值与第1组参考信号端口对应的加权值的相位差。
  23. 一种参考信号的发送方法，其特征在于，所述方法包括：
    配置N个参考信号端口的参考信号，N>＝6，所述N个参考信号端口由M组参考信号端口组成，M>＝1；
    发送所述配置的N个参考信号端口的参考信号配置信息，并根据所述配置的N个参考信号端口及所述参考信号配置信息，发送参考信号；
    所述参考信号用于接收设备基于所述配置的N个参考信号端口的参考信号进行信道状态信息CSI测量，得到根据第一预编码矩阵和/或第二预编码矩阵确定的第三预编码矩阵，根据所述第三预编码矩阵得到信道质量指示CQI；
    其中，所述接收设备基于所述配置的N个参考信号端口的参考信号进行信道状态信息CSI测量，包括：分别对所述M组参考信号端口中每组端口的参考信号进行CSI测量，得到所述每组参考信号端口对应的加权值，并根据所述加权值得到所述第一预编码矩阵和/或第二预编码矩阵；
    其中，在所述第一预编码矩阵中，所述任意两组参考信号端口对应的加权值相差一个相位项；和/或在所述第二预编码矩阵中，所述任意两组参考信号端口对应的加权值相差一个相位项。
  24. 如权利要求23所述的方法，其特征在于，所述方法还包括：
    接收所述接收设备反馈的所述第三预编码矩阵对应的预编码矩阵指示符PMI和信道质量指示CQI，并根据所述PMI和CQI进行预编码操作。
  25. 根据权利要求23或24所述的方法，其特征在于，
    所述N小于等于总天线端口数。
  26. 根据权利要求23至25任一项所述的方法，其特征在于，所述相位项为
    Figure PCTCN2014090811-appb-100011
    的形式，其中
    Figure PCTCN2014090811-appb-100012
    为[0,2π]之间的一个角度。
  27. 根据权利要求23～26任一项所述的方法，其特征在于，
    所述第三预编码矩阵表示为：
    Figure PCTCN2014090811-appb-100013
    其中，W为所述第三预编码矩阵，W1为所述第一预编码矩阵，W1中的第i个对角块对应第i组参考信号端口对应的加权值，其中，i的取值为1至M；W2为所述第二预编码矩阵，
    Figure PCTCN2014090811-appb-100014
    为第i+1组参考信号端口对应的加权值与第1组参考信号端口对应的加权值的相位差。
  28. 根据权利要求23～26任一项所述的方法，其特征在于，
    所述第三预编码矩阵表示为：
    Figure PCTCN2014090811-appb-100015
    其中，W为所述第三预编码矩阵，W1为所述第一预编码矩阵，W2为所述第二预编码矩阵，W2中的第i行对应第i组参考信号端口对应的加权值，其中，i的取值为1至M；
    Figure PCTCN2014090811-appb-100016
    为第i+1组参考信号端口对应的加权值与第1组参考信号端口对应的加权值的相位差。
  29. 一种信道状态信息测量装置，其特征在于，所述装置包括：分别连接在总线上的收发器和处理器；
    所述收发器，用于接收发送设备发送的参考信号配置信息和配置的N个参考信号端口的参考信号；
    所述处理器，用于对所述收发器接收的配置的N个参考信号端口的参考信号进行信道状态信息CSI测量；其中，所述N个参考信号端口由M组参考 信号端口组成，且M>＝1；
    其中，基于所述配置的N个参考信号端口的参考信号进行信道状态信息测量，包括：分别对所述M组参考信号端口中每组端口的参考信号进行CSI测量，得到所述每组参考信号端口对应的加权值，并根据所述加权值得到第一预编码矩阵和/或第二预编码矩阵；根据所述第一预编码矩阵和/或第二预编码矩阵得到第三预编码矩阵；根据所述第三预编码矩阵得到信道质量指示CQI；
    其中，在所述第一预编码矩阵中，任意两组参考信号端口对应的加权值之间相差一个相位项；和/或，在所述第二预编码矩阵中，所述任意两组参考信号端口对应的加权值之间相差一个相位项。
  30. 根据权利要求29所述装置，其特征在于，
    所述收发器，还用于向所述发送设备反馈所述处理器得到的第三预编码矩阵对应的预编码矩阵指示符PMI和信道质量指示CQI。
  31. 根据权利要求29或30所述装置，其特征在于，
    所述N小于等于总天线端口数。
  32. 根据权利要求29至31任一项所述装置，其特征在于，所述相位项为
    Figure PCTCN2014090811-appb-100017
    的形式，其中
    Figure PCTCN2014090811-appb-100018
    为[0,2π]之间的一个角度。
  33. 根据权利要求29至31任一项所述装置，其特征在于，
    所述处理器具体用于将所述第三预编码矩阵表示为：
    Figure PCTCN2014090811-appb-100019
    其中，W为所述第三预编码矩阵，W1为所述第一预编码矩阵，W1中的第i个对角块对应第i组参考信号端口对应的加权值，其中，i的取值为1至M；W2为所述第二预编码矩阵，
    Figure PCTCN2014090811-appb-100020
    为第i+1组参考信号端口对应的加权值与第1组参考信号端口对应的加权值的相位差。
  34. 根据权利要求29至31任一项所述装置，其特征在于，
    所述处理器具体用于将所述第三预编码矩阵表示为：
    Figure PCTCN2014090811-appb-100021
    其中，W为所述第三预编码矩阵，W1为所述第一预编码矩阵，W2为所述第二预编码矩阵，W2中的第i行对应第i组参考信号端口对应的加权值，其中，i的取值为1至M；
    Figure PCTCN2014090811-appb-100022
    为第i+1组参考信号端口对应的加权值与第1组参考信号端口对应的加权值的相位差。
  35. 一种参考信号的发送装置，其特征在于，所述装置包括：分别连接在总线的收发器和处理器，
    所述处理器，用于配置N个参考信号端口的参考信号，N>＝6，所述N个参考信号端口由M组参考信号端口组成，M>＝1；
    所述收发器，用于发送所述处理器配置的N个参考信号的参考信号配置信息，并根据所述配置的N个参考信号端口及所述参考信号配置信息，发送参考信号；
    所述参考信号用于接收设备基于所述配置的N个参考信号端口的参考信号进行信道状态信息CSI测量，得到根据第一预编码矩阵和/或第二预编码矩阵确定的第三预编码矩阵，根据所述第三预编码矩阵得到信道质量指示CQI；
    其中，所述接收设备基于所述配置的N个参考信号端口的参考信号进行信道状态信息CSI测量，包括：分别对所述M组参考信号端口中每组端口的参考信号进行CSI测量，得到所述每组参考信号端口对应的加权值，并根据所述加权值得到所述第一预编码矩阵和/或第二预编码矩阵；
    其中，在第一预编码矩阵中，所述任意两组参考信号端口对应的加权值相差一个相位项；和/或，在第二预编码矩阵中，所述任意两组参考信号端口对应的加权值相差一个相位项。
  36. 如权利要求35所述的装置，其特征在于，
    所述收发器，还用于接收所述接收设备反馈的所述第三预编码矩阵对应的预编码矩阵指示符PMI和信道质量指示CQI；
    所述处理器，还用于根据所述收发器接收的PMI和CQI进行预编码操作。
  37. 根据权利要求35或36所述装置，其特征在于，
    所述N小于等于总天线端口数。
  38. 根据权利要求36至37任一项所述装置，其特征在于，所述相位项为
    Figure PCTCN2014090811-appb-100023
    的形式，其中
    Figure PCTCN2014090811-appb-100024
    为[0,2π]之间的一个角度。
  39. 根据权利要求36～38任一项所述装置，其特征在于，
    所述第三预编码矩阵表示为：
    Figure PCTCN2014090811-appb-100025
    其中，W为所述第三预编码矩阵，W1为所述第一预编码矩阵，W1中的第i个对角块对应第i组参考信号端口在对应的加权值，其中，i的取值为1至M；W2为所述第二预编码矩阵，
    Figure PCTCN2014090811-appb-100026
    为第i+1组参考信号端口对应的加权值与第1组参考信号端口对应的加权值的相位差。
  40. 根据权利要求36～38任一项所述装置，其特征在于，
    所述第三预编码矩阵表示为：
    Figure PCTCN2014090811-appb-100027
    其中，W为所述第三预编码矩阵，W1为所述第一预编码矩阵，W2为所述第二预编码矩阵，W2中的第i行对应第i组参考信号端口对应的加权值，其中，i的取值为1至M；
    Figure PCTCN2014090811-appb-100028
    为第i+1组参考信号端口对应的加权值与第1组参考信号端口对应的加权值的相位差。
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