WO2017152415A1 - 一种测量信道质量索引的方法及装置 - Google Patents

一种测量信道质量索引的方法及装置 Download PDF

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Publication number
WO2017152415A1
WO2017152415A1 PCT/CN2016/076116 CN2016076116W WO2017152415A1 WO 2017152415 A1 WO2017152415 A1 WO 2017152415A1 CN 2016076116 W CN2016076116 W CN 2016076116W WO 2017152415 A1 WO2017152415 A1 WO 2017152415A1
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WIPO (PCT)
Prior art keywords
resource
terminal
base station
indication information
rank
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Ceased
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PCT/CN2016/076116
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English (en)
French (fr)
Inventor
张瑞齐
曲秉玉
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to EP16893066.7A priority Critical patent/EP3419326B1/en
Priority to JP2018547959A priority patent/JP6800992B2/ja
Priority to PCT/CN2016/076116 priority patent/WO2017152415A1/zh
Priority to ES16893066T priority patent/ES2778435T3/es
Priority to BR112018068395-7A priority patent/BR112018068395B1/pt
Priority to CN201680083385.XA priority patent/CN108781378B/zh
Publication of WO2017152415A1 publication Critical patent/WO2017152415A1/zh
Priority to US16/126,331 priority patent/US10735056B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0417—Feedback systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0452—Multi-user MIMO systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H04B7/0486—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking channel rank into account
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]
    • 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
    • H04B7/0658—Feedback reduction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and apparatus for measuring a channel quality index (CQI).
  • CQI channel quality index
  • the Long Term Evolution (LTE) system widely adopts Multiple Input and Multiple Output (MIMO) technology.
  • MIMO Multiple Input and Multiple Output
  • precoding technology is generally used to improve signal transmission quality/rate.
  • FDD Frequency Division Duplexing
  • the downlink channel information includes a Precoding Matrix Index (PMI), a Rank Index (RI), and a CQI.
  • PMI Precoding Matrix Index
  • RI Rank Index
  • CQI CQI
  • the terminal determines the downlink channel information based on the assumption of Single-User MIMO (SU-MIMO).
  • the base station After the base station receives the downlink channel information sent by multiple terminals, it is determined that multiple terminals are selected for multi-user MIMO ( Multi-User MIMO (referred to as MU-MIMO).
  • Multi-User MIMO referred to as MU-MIMO
  • the base station re-predicts each terminal according to the downlink channel information fed back by each terminal by using a preset algorithm (for example, a zero-forcing algorithm). Encoding matrix, re-determining the rank of the channel and assigning a corresponding CSI-RS port to each terminal. Since the CQI fed back by the terminal is based on the SU-MIMO assumption, in the MU-MIMO scenario, the CQI and the actual downlink are The channel quality does not match.
  • a preset algorithm for example, a zero-forcing algorithm
  • the base station pre-codes the CSI-RS by using the precoding matrix, and pre-codes the pre-coded CSI-RS to the terminal, and the terminal is based on the CSI-RS. Re-measure the CQI and feed back to the base station.
  • the base station needs to measure the channel quality of the channel corresponding to each CSI-RS port (that is, according to the information on the time-frequency resource corresponding to each received CSI-RS port).
  • Embodiments of the present invention provide a method and apparatus for measuring a channel quality index, which are used to reduce resource consumption of a terminal.
  • a method of measuring CQI comprising:
  • the base station determines a target CSI-RS on each time-frequency resource corresponding to the resource number of the terminal, where the target CSI-RS is a pre-coded CSI-RS, and the time-frequency resource is used to transmit the CSI-RS. Or the resource unit of the target CSI-RS;
  • the base station receives a CQI sent by the terminal to indicate channel quality.
  • the sending, by the base station, the indication information to the terminal includes:
  • the base station sends the indication information to the terminal on the PDCCH, where the resource numbers indicated by the indication information sent by the base station to the terminal on the PDCCH of different subframes are the same or different.
  • the information terminal sent by the base station on the PDCCH can be quickly determined, because Therefore, the base station may send indication information on each subframe for the terminal to measure channel quality according to the resource number allocated by the base station for the terminal.
  • the number of the resource numbers indicated in the indication information is the same as the value of the first Rank, and the method further includes:
  • the RI is a second Rank measured by the terminal according to the information received on each time-frequency resource corresponding to the resource number indicated in the indication information, and according to the measurement Obtaining the RI determined by the second Rank;
  • the base station pre-codes the data stream sent to the terminal by using a precoding matrix corresponding to the terminal, and sends the data stream on the data port, the number of the data port and the value of the first Rank.
  • the number of layers of the data stream is the same as the value of the second Rank
  • the second Rank is less than or equal to the first Rank
  • the first Rank is an initial Rank determined by the base station for the terminal.
  • the terminal determines the first according to the target information. Two Ranks, and the RI is fed back to the base station, and the base station finally determines the second Rank as the Rank corresponding to the terminal, thereby ensuring that the terminal can correctly decode the data.
  • the resource number is a resource number of R resources included in the resource pool, one resource corresponds to one resource number, and R is an integer greater than or equal to 2, and the resource pool is a resource pool defined by the base station.
  • the method also includes:
  • the base station sends the resource pool to the terminal by using RRC signaling.
  • the resource number is a target CSI-RS port number, a row number of an orthogonal matrix, or a column number of an orthogonal matrix, and a combination of N resource units and a code of length N corresponds to one target CSI-RS port.
  • 1 resource unit corresponds to a target CSI-RS port, N Is an integer greater than or equal to 2.
  • the base station determines the target CSI-RS on each time-frequency resource corresponding to the resource number of the terminal, including:
  • the base station determines, according to the resource number, the CSI-RS corresponding to the resource number, and the precoding matrix, a target CSI-RS sent on each time-frequency resource corresponding to the resource number.
  • the determining, by the base station, the target CSI-RS sent on each time-frequency resource corresponding to the resource number, according to the resource number, the CSI-RS corresponding to the resource number, and the precoding matrix including:
  • the base station allocates a resource number to the terminal according to the first Rank, where the number of the resource number is the same as the value of the first Rank;
  • the base station uses the code corresponding to the resource number to spread the CSI-RS corresponding to the resource number, and precodes each CSI-RS obtained by using the precoding matrix to obtain the resource number.
  • the code corresponding to the resource number is a code of length N corresponding to the target CSI-RS port, where the resource number is a row of an orthogonal matrix, where the resource number is a target CSI-RS port number.
  • the code corresponding to the resource number is a row element corresponding to the row number.
  • the code corresponding to the resource number is a column element corresponding to the column number.
  • the resource number is a resource number of R resources included in the resource pool, where the indication information includes R bits, and the rth bit of the R bits is used to indicate the R Whether the rth resource of the resources is allocated to the terminal, R is an integer greater than or equal to 2, r is an integer greater than or equal to 1 and less than or equal to R; or, the indication information includes 3 bits, and the 3 When the values of the bits are different, the indication The resource number indicated in the information is different; or the indication information includes 4 bits, and when the values of the 4 bits are different, the resource numbers indicated in the indication information are different.
  • a method of measuring CQI comprising:
  • the terminal receives information sent by the base station on each time-frequency resource
  • indication information used by the base station, to indicate, to the terminal, a resource number of the terminal
  • the time-frequency resource is a resource unit for transmitting a CSI-RS or a target CSI-RS, and the target CSI-RS is a pre-coded CSI-RS;
  • the terminal measures channel quality according to the target information, and determines a CQI according to the measured channel quality
  • the terminal sends the CQI to the base station.
  • the receiving, by the terminal, the indication information sent by the base station including:
  • the terminal receives the indication information sent by the base station on the PDCCH, and the resource numbers indicated by the indication information sent by the base station that are received by the terminal on the PDCCH of different subframes are the same or different.
  • the information terminal that is sent by the base station on the PDCCH can be quickly determined. Therefore, the base station can send indication information on each subframe for the terminal to measure the channel quality according to the resource number allocated by the base station for the terminal.
  • the number of the resource number indicated by the indication information is the same as the value of the first Rank, and the terminal determines the resource number of the terminal according to the indication information. Thereafter, the method further includes:
  • the terminal Determining, by the terminal, that the number of the resource number is a value of a first Rank, where the first Rank is an initial Rank determined by the base station for the terminal;
  • the terminal determines a second Rank according to the target information and the first Rank, and determines an RI according to the measured second Rank, where the second Rank corresponding to the RI is less than or equal to the first Rank;
  • the terminal sends the RI to the base station.
  • the terminal determines the first according to the target information. Two Ranks, and the RI is fed back to the base station, and the base station finally determines the second Rank as the Rank corresponding to the terminal, thereby ensuring that the terminal can correctly decode the data.
  • the resource number is a resource number of the R resources included in the resource pool, and one resource corresponds to one resource number, and R is an integer greater than or equal to 2.
  • the method further includes:
  • the terminal receives the resource pool sent by the base station by using RRC signaling.
  • the resource number is a target CSI-RS port number, a row number of an orthogonal matrix, or a column number of an orthogonal matrix, and a combination of N resource units and a code of length N corresponds to one target CSI-RS port.
  • one resource unit corresponds to one target CSI-RS port, and N is an integer greater than or equal to 2.
  • the determining, by the terminal, the target information in the information according to the resource number of the terminal including:
  • the terminal uses the code corresponding to the resource number of the terminal to the resource at the terminal
  • the information received on the time-frequency resource corresponding to the number is despread to obtain the target information
  • the code corresponding to the resource number is a code of length N corresponding to the target CSI-RS port, where the resource number is a row of an orthogonal matrix, where the resource number is a target CSI-RS port number.
  • the code corresponding to the resource number is a row element corresponding to the row number.
  • the code corresponding to the resource number is a column element corresponding to the column number.
  • the resource number is a resource number of the R resources included in the resource pool
  • the terminal determines the resource number of the terminal according to the indication information, including:
  • R is an integer greater than or equal to 2
  • r is an integer greater than or equal to 1 and less than or equal to R;
  • the terminal determines a resource number of the terminal according to a value of 4 bits included in the indication information.
  • an apparatus for measuring CQI comprising:
  • a first determining unit configured to determine a target CSI-RS on each time-frequency resource corresponding to the resource number of the terminal, where the target CSI-RS is a pre-coded CSI-RS, where the time-frequency resource is used for Transmitting a resource unit of the CSI-RS or the target CSI-RS;
  • a first sending unit configured to send a target CSI-RS on the time-frequency resource to the terminal on each time-frequency resource corresponding to the resource number
  • a second sending unit configured to send, to the terminal, indication information used to indicate a resource number of the terminal
  • the first receiving unit is configured to receive a CQI sent by the terminal to indicate channel quality.
  • the second sending unit is specifically configured to:
  • the indication information is sent to the terminal on the PDCCH, and the resource number indicated by the indication information that is sent by the second sending unit to the terminal on the PDCCH of different subframes is the same or different.
  • the information terminal that is sent by the base station on the PDCCH can be quickly determined. Therefore, the base station can send indication information on each subframe for the terminal to measure the channel quality according to the resource number allocated by the base station for the terminal.
  • the device further includes a second receiving unit, a second determining unit, a precoding unit, and a third sending unit;
  • the second receiving unit is configured to receive an RI that is sent by the terminal, where the RI is measured by the terminal according to the information received on each time-frequency resource corresponding to the resource number indicated by the indication information. Two Rank, and an RI determined according to the measured second Rank;
  • the second determining unit is configured to determine the second Rank according to the RI
  • the precoding unit is configured to perform precoding on a data stream sent by the terminal by using a precoding matrix corresponding to the terminal;
  • the third sending unit is configured to send the data stream on a data port, where the number of data ports is the same as the value of the first Rank, and the number of layers of the data stream and the value of the second Rank Similarly, the second Rank is less than or equal to the first Rank, and the first Rank is an initial Rank determined by the base station for the terminal.
  • the terminal determines the first according to the target information. Two Rank, and The RI is fed back to the base station, and the base station finally determines the second Rank as the Rank corresponding to the terminal, thereby ensuring that the terminal can correctly decode the data.
  • the device further includes a fourth sending unit
  • the fourth sending unit is configured to send the resource pool to the terminal by using RRC signaling, where the resource number is a resource number of R resources included in the resource pool, and one resource corresponds to one resource number, and R is greater than An integer equal to 2.
  • the resource number is a target CSI-RS port number, a row number of an orthogonal matrix, or a column number of an orthogonal matrix, and a combination of N resource units and a code of length N corresponds to one target CSI-RS port.
  • one resource unit corresponds to one target CSI-RS port, and N is an integer greater than or equal to 2.
  • the first determining unit is specifically configured to:
  • the first determining unit is specifically configured to:
  • the code corresponding to the resource number is a code of length N corresponding to the target CSI-RS port, where the resource number is a row of an orthogonal matrix, where the resource number is a target CSI-RS port number.
  • the code corresponding to the resource number is a row element corresponding to the row number.
  • the code corresponding to the resource number is the column number. Corresponding column element.
  • the resource number is a resource number of R resources included in the resource pool, where the indication information includes R bits, and the rth bit of the R bits is used to indicate the R Whether the rth resource of the resources is allocated to the terminal, R is an integer greater than or equal to 2, r is an integer greater than or equal to 1 and less than or equal to R; or, the indication information includes 3 bits, and the 3 When the value of the bit is different, the resource number indicated in the indication information is different; or the indication information includes 4 bits, and when the values of the 4 bits are different, the resource number indicated in the indication information different.
  • an apparatus for measuring CQI including:
  • a first receiving unit configured to receive information sent by the base station on each time-frequency resource
  • a second receiving unit configured to receive indication information that is sent by the base station to indicate, to the terminal, a resource number of the terminal
  • a first determining unit configured to determine, according to the indication information, a resource number of the terminal
  • a second determining unit configured to determine target information in the information according to the resource number of the terminal, where the target information is that the received base station is on the time-frequency resource corresponding to the resource number of the terminal.
  • the information sent by the terminal where the time-frequency resource is a resource unit for transmitting a CSI-RS or a target CSI-RS, and the target CSI-RS is a pre-coded CSI-RS;
  • a first execution unit configured to measure channel quality according to the target information, and determine a CQI according to the measured channel quality
  • a first sending unit configured to send the CQI to the base station.
  • the second receiving unit is specifically configured to:
  • the second receiving unit receives the indication signal sent by the base station on a PDCCH of a different subframe
  • the resource numbers indicated by the information are the same or different.
  • the information terminal that is sent by the base station on the PDCCH can be quickly determined. Therefore, the base station can send indication information on each subframe for the terminal to measure the channel quality according to the resource number allocated by the base station for the terminal.
  • the device further includes a third determining unit, a second executing unit, and a second sending unit;
  • the third determining unit is configured to determine that the number of the resource number is a value of a first Rank, where the first Rank is an initial Rank determined by the base station for the terminal;
  • the second execution unit is configured to measure a second Rank according to the target information and the first Rank, and determine an RI according to the measured second Rank, where a second Rank corresponding to the RI is less than or equal to the First Rank;
  • the second sending unit is configured to send the RI to the base station.
  • the terminal determines the first according to the target information. Two Ranks, and the RI is fed back to the base station, and the base station finally determines the second Rank as the Rank corresponding to the terminal, thereby ensuring that the terminal can correctly decode the data.
  • the device further includes a third receiving unit, configured to:
  • the resource pool sent by the base station is received by the RRC signaling, where the resource number is a resource number of R resources included in the resource pool, and one resource corresponds to one resource number, and R is an integer greater than or equal to 2.
  • the resource number is a target CSI-RS port number, a row number of an orthogonal matrix, or a column number of an orthogonal matrix, and a combination of N resource units and a code of length N corresponds to one target CSI-RS port.
  • one resource unit corresponds to one target CSI-RS port, and N is an integer greater than or equal to 2.
  • the second determining unit is specifically configured to:
  • the code corresponding to the resource number is a code of length N corresponding to the target CSI-RS port, where the resource number is a row of an orthogonal matrix, where the resource number is a target CSI-RS port number.
  • the code corresponding to the resource number is a row element corresponding to the row number.
  • the code corresponding to the resource number is a column element corresponding to the column number.
  • the first determining unit is specifically configured to:
  • R is an integer greater than or equal to 2
  • r is an integer greater than or equal to 1 and less than or equal to R;
  • an apparatus for measuring a CQI including: a memory, a processor, a transmitter, and a receiver;
  • the memory is for storing code, and the processor performs the following actions according to the code:
  • the target CSI-RS is a pre-coded CSI-RS, and the time-frequency resource is used for transmission a resource unit of the CSI-RS or the target CSI-RS;
  • the transmitter is configured to send, to the terminal, a target CSI-RS on the time-frequency resource on each time-frequency resource corresponding to the resource number;
  • the transmitter is further configured to send, to the terminal, indication information used to indicate a resource number of the terminal;
  • the receiver is configured to receive a CQI sent by the terminal to indicate channel quality.
  • the transmitter is specifically configured to:
  • the indication information is sent to the terminal on the PDCCH, and the resource numbers indicated by the indication information sent by the transmitter to the terminal on the PDCCH of different subframes are the same or different.
  • the information terminal that is sent by the base station on the PDCCH can be quickly determined. Therefore, the base station can send indication information on each subframe for the terminal to measure the channel quality according to the resource number allocated by the base station for the terminal.
  • the receiver is further configured to receive an RI sent by the terminal, where the RI is received by the terminal according to each time-frequency resource corresponding to the resource number indicated in the indication information.
  • the information measures the second Rank, and the RI determined according to the measured second Rank;
  • the processor is further configured to determine the second Rank according to the RI;
  • the processor is further configured to perform precoding on a data stream sent by the terminal by using a precoding matrix corresponding to the terminal;
  • the transmitter is further configured to send the data stream on a data port, where the number of data ports is the same as the value of the first Rank, and the number of layers of the data stream is the same as the value of the second Rank.
  • the second Rank is less than or equal to the first Rank
  • the first Rank is an initial Rank determined by the base station for the terminal.
  • the terminal determines the first according to the target information. Two Ranks, and the RI is fed back to the base station, and the base station finally determines the second Rank as the Rank corresponding to the terminal, thereby ensuring that the terminal can correctly decode the data.
  • the transmitter is further configured to:
  • the resource pool is sent to the terminal by using RRC signaling, where the resource number is a resource number of R resources included in the resource pool, one resource corresponds to one resource number, and R is an integer greater than or equal to 2.
  • the resource number is a target CSI-RS port number, a row number of an orthogonal matrix, or a column number of an orthogonal matrix, and a combination of N resource units and a code of length N corresponds to one target CSI-RS port.
  • one resource unit corresponds to one target CSI-RS port, and N is an integer greater than or equal to 2.
  • the processor is specifically configured to:
  • the processor is specifically configured to:
  • the code corresponding to the resource number is a code of length N corresponding to the target CSI-RS port, where the resource number is a row of an orthogonal matrix, where the resource number is a target CSI-RS port number.
  • the code corresponding to the resource number is a row element corresponding to the row number.
  • the code corresponding to the resource number is a column element corresponding to the column number.
  • the resource number is a resource number of R resources included in the resource pool, where the indication information includes R bits, and the rth bit of the R bits is used to indicate the R Whether the rth resource of the resources is allocated to the terminal, R is an integer greater than or equal to 2, r is an integer greater than or equal to 1 and less than or equal to R; or, the indication information includes 3 bits, and the 3 When the value of the bit is different, the resource number indicated in the indication information is different; or the indication information includes 4 bits, and when the values of the 4 bits are different, the resource number indicated in the indication information different.
  • an apparatus for measuring a CQI including: a receiver, a memory, a processor, and a transmitter;
  • the receiver is configured to receive information sent by the base station on each time-frequency resource
  • the receiver is further configured to receive indication information that is sent by the base station to indicate, to the terminal, a resource number of the terminal;
  • the memory is for storing code, and the processor performs the following actions according to the code:
  • the time-frequency resource is a resource unit for transmitting a CSI-RS or a target CSI-RS, and the target CSI-RS is a pre-coded CSI-RS;
  • the transmitter is configured to send the CQI to the base station.
  • the receiver is specifically configured to:
  • the indication information sent by the base station is received on the PDCCH, and the resource numbers indicated by the indication information sent by the base station that are received by the receiver on the PDCCH of different subframes are the same or different.
  • the information terminal that is sent by the base station on the PDCCH can be quickly determined. Therefore, the base station can send indication information on each subframe for the terminal to measure the channel quality according to the resource number allocated by the base station for the terminal.
  • the processor is further configured to determine that the number of the resource number is a value of a first Rank, where the first Rank is an initial Rank determined by the base station for the terminal;
  • the processor is further configured to measure a second Rank according to the target information and the first Rank, and determine an RI according to the measured second Rank, where a second Rank corresponding to the RI is less than or equal to the first a Rank;
  • the transmitter is further configured to send the RI to the base station.
  • the terminal determines the first according to the target information. Two Ranks, and the RI is fed back to the base station, and the base station finally determines the second Rank as the Rank corresponding to the terminal, thereby ensuring that the terminal can correctly decode the data.
  • the receiver is further configured to:
  • the resource pool sent by the base station, where the resource number is a resource number of R resources included in the resource pool, one resource corresponds to one resource number, and R is an integer greater than or equal to 2.
  • the resource number is a target CSI-RS port number, a row number of an orthogonal matrix, or a column number of an orthogonal matrix, and a combination of N resource units and a code of length N corresponds to one target CSI-RS port.
  • one resource unit corresponds to one target CSI-RS port, and N is an integer greater than or equal to 2.
  • the processor is specifically configured to:
  • the code corresponding to the resource number is a code of length N corresponding to the target CSI-RS port, where the resource number is a row of an orthogonal matrix, where the resource number is a target CSI-RS port number.
  • the code corresponding to the resource number is a row element corresponding to the row number.
  • the code corresponding to the resource number is a column element corresponding to the column number.
  • the processor is specifically configured to:
  • R is an integer greater than or equal to 2
  • r is an integer greater than or equal to 1 and less than or equal to R;
  • the base station dynamically indicates to the terminal the resource number allocated by the terminal, and after receiving the resource number indicated by the base station, the terminal determines, according to the resource number, information received on each time-frequency resource.
  • Target information based on target information
  • the CQI is measured and fed back to the base station. After the CQI is measured according to the information received on each time-frequency resource, all measured CQIs are fed back to the base station, which greatly reduces the resource consumption of the terminal.
  • FIG. 1 is a flowchart of a method for measuring CQI according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a PRB according to an embodiment of the present invention.
  • FIG. 3 is a flowchart of a method for determining a target CSI-RS according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of an apparatus for measuring CQI according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of another apparatus for measuring CQI according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of another apparatus for measuring CQI according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of another apparatus for measuring CQI according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of another apparatus for measuring CQI according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram showing the composition of another apparatus for measuring CQI according to an embodiment of the present invention. Figure.
  • the base station transmits a CSI-RS corresponding to the terminal to each of the plurality of terminals, and each of the plurality of terminals receives the CSI-RS sent by the base station, and based on the assumption of the C-SI based on the SU-MIMO assumption - RS performs channel estimation, the estimated PMI, the initial RI (for distinguishing from the RI below, referred to herein as the initial RI), and the initial CQI (in order to distinguish from the CQI below, referred to herein as the initial CQI) Feeding back to the base station, after receiving the PMI, the initial RI, and the initial CQI sent by the multiple terminals, the base station determines whether to form the MU-MIMO of the N terminals of the multiple terminals based on the principle of the maximum throughput or the minimum interference level of the MIMO system.
  • the base station eliminates or reduces the interference between the N terminals, the PMI, the initial RI, and the initial CQI fed back by the N terminals re-determine the precoding matrix corresponding to the terminal for each of the N terminals.
  • the Rank in this case, the Rank is the first Rank in the following.
  • the method provided by the embodiment of the present invention can be applied to the scenario, and the following is also applied to the scenario in the scenario.
  • the method provided by the embodiment of the present invention can also be applied to other scenarios.
  • the terminal in the embodiment of the present invention may be any one of multiple terminals that constitute MU-MIMO, or may be other terminals.
  • the method provided by the embodiment of the present invention is mainly applied to the LTE and the LTE-advanced system, and is mainly applied to the downlink MIMO scenario.
  • An embodiment of the present invention provides a method for measuring CQI. As shown in FIG. 1, the method includes:
  • the base station determines a target CSI-RS on each time-frequency resource corresponding to the resource number of the terminal.
  • the target CSI-RS is a pre-coded CSI-RS
  • the time-frequency resource is a resource unit used for transmitting the CSI-RS or the target CSI-RS.
  • the target CSI-RS may be a CSI-RS pre-coded by a CSI-RS corresponding to the resource number by a precoding matrix corresponding to the terminal, and the precoding matrix corresponding to the terminal may be determined by the base station, and the CSI corresponding to the resource number
  • the RS may be a preset CSI-RS or a CSI-RS determined by the base station by other means, but it should be noted that the CSI-RS is well known to the base station and the terminal.
  • the resource number is a target CSI-RS port number, a row number of an orthogonal matrix, or a column number of an orthogonal matrix, and a combination of N resource units and a code of length N corresponds to one target CSI-RS port.
  • one resource unit corresponds to one target CSI-RS port, and N is an integer greater than or equal to 2.
  • the target CSI-RS port number is the number of the target CSI-RS port, and the number of the target CSI-RS port is used to distinguish different target CSI-RS ports.
  • the resource number when the resource number is the target CSI-RS port number, the resource number may indicate the time domain resource or may indicate The code domain resource; when the resource number is the row (or column) number of the orthogonal matrix, the base station may preset different time-frequency resources for different resource numbers, or when the time-frequency resources corresponding to different resource numbers are the same Domain resource.
  • the basic unit of the interface resource allocation is a physical resource block (PRB).
  • PRB physical resource block
  • One PRB includes 12 consecutive subcarriers in the frequency domain, and includes 7 consecutive orthogonal frequency division multiplexing in the time domain.
  • RE Orthogonal Frequency Division Multiplexing, OFDM for short
  • a resource consisting of 1 OFDM symbol period and one subcarrier is called a Resource Element (RE)
  • some REs included in one PRB are some RE is used to transmit data
  • some REs are used to transmit reference signals, for example, resource unit 1 (hereinafter referred to as RE1), resource unit 2 (hereinafter referred to as RE2), and resource unit 3 (hereinafter referred to as RE3) shown in FIG.
  • RE4 resource unit 4 (hereinafter referred to as RE4) are used to transmit the reference signal.
  • the resource number can be the target CSI-RS port number.
  • one CSI-RS port can occupy 2 REs (or 4 REs), and the resource number can be an orthogonal code of length 2 (or 4) and 2 (or 4) REs.
  • the combination of the target CSI-RS port is the same. For example, based on the example described in FIG.
  • the target CSI-RS port numbered 1 may correspond to RE1 and RE2, and the number in the predefined set of orthogonal codes is The orthogonal code of a1; the target CSI-RS port numbered 2 may correspond to RE1 and RE2, and the orthogonal code numbered a2 in the predefined set of orthogonal codes is adopted; the target CSI-RS port numbered 3 may Corresponding to RE3 and RE4, an orthogonal code numbered a1 in a predefined set of orthogonal codes is used; the target CSI-RS port numbered 4 can correspond to RE3 and RE4, using a predefined set of orthogonal codes.
  • the resource number can also be the row (or column) number of the orthogonal matrix.
  • the resource number is the row (or column) number of the orthogonal matrix, any two rows (or columns) of the orthogonal matrix are orthogonal.
  • the multi-row (or column) elements of the orthogonal matrix may correspond to the same time-frequency resource, and may also preset the time-frequency resources corresponding to a row (or column) element of the orthogonal matrix, based on FIG.
  • the time-frequency resources corresponding to the first column of the orthogonal matrix may be RE1, RE2, RE3, and RE4, and the orthogonal matrix
  • the second column includes 4 elements, and the time-frequency resources corresponding to the second column of the orthogonal matrix are also RE1, RE2, RE3, and RE4.
  • the resource number may be a resource unit number, a code number of an orthogonal code in a predefined set of orthogonal codes, a row number or a column number of a predefined orthogonal matrix, or a resource unit and a predefined group.
  • the resource number may also be a resource unit number.
  • the resource number may be a resource unit number of one or more resource units in resource unit 1, resource unit 2, resource unit 3, and resource unit 4, and the resource unit number is used to distinguish different Resource unit.
  • the resource number may also be a code number of an orthogonal code in a predefined set of orthogonal codes.
  • multiple orthogonal codes in a set of orthogonal codes may correspond to the same time-frequency resource, or may have The time-frequency resource corresponding to the orthogonal code of a certain code number is preset.
  • the time-frequency resources may be RE1, RE2, RE3, and RE4, and the orthogonal code having the code number B includes 4 elements, and the corresponding time-frequency resources may also be RE1, RE2, RE3, and RE4.
  • the time-frequency resource corresponding to the resource number is the time-frequency resource that can be indicated by the resource number, and the resource number of the terminal can be obtained by the base station according to the resource pool allocation, and the resource pool is configured in both the terminal and the base station.
  • the resource number is a resource number of R resources included in the resource pool, one resource corresponds to one resource number, R is an integer greater than or equal to 2, and the resource pool is a resource pool defined by the base station, and the base station is a base station.
  • the resource pool may be sent to the terminal by using Radio Resource Control (RRC) signaling.
  • RRC Radio Resource Control
  • the terminal may receive the resource pool through RRC signaling.
  • the base station can pass static/semi-static signaling (for example).
  • the RRC signaling indicates the resource pool to the terminal, and the base station does not send data on the time-frequency resource corresponding to the resource number in the resource pool.
  • the terminal After receiving the resource pool, the terminal considers that the resource number in the resource pool is All are assigned to one or more terminals for the terminal to determine interference.
  • the step 101 may be performed by: the base station determining, according to the resource number, the CSI-RS corresponding to the resource number, and the precoding matrix, each time-frequency resource corresponding to the resource number.
  • the target CSI-RS sent.
  • the base station determines, according to the resource number, a CSI-RS corresponding to the resource number, and the precoding matrix, a target that is sent on each time-frequency resource corresponding to the resource number.
  • the process of the CSI-RS can be specifically implemented by the following steps 301-303:
  • the base station determines a first Rank and a precoding matrix of the terminal.
  • the terminal when the terminal is a terminal in a plurality of terminals constituting the MU-MIMO, the first Rank and the precoding matrix corresponding to each of the plurality of terminals constituting the MU-MIMO determined by the base station can enable the multiple terminals The interference between them is small.
  • the base station allocates a resource number to the terminal according to the first Rank, where the number of the resource numbers is the same as the value of the first Rank.
  • the base station uses the code corresponding to the resource number to spread CSI-RS corresponding to the resource number, and precodes each CSI-RS obtained by using the precoding matrix to obtain the The target CSI-RS sent on each time-frequency resource corresponding to the resource number.
  • the code corresponding to the resource number is a code of length N corresponding to the target CSI-RS port, where the resource number is a row of an orthogonal matrix, where the resource number is a target CSI-RS port number.
  • the code corresponding to the resource number is a row element corresponding to the row number.
  • the code corresponding to the resource number is the column number. Corresponding column element.
  • the CSI-RS transmitted by the base station on different PRBs may be different symbols or the same symbols in the CSI-RS sequence.
  • Example 1 the first Rank corresponding to the terminal is 1, and if the target CSI-RS port number assigned by the base station to the terminal is 1, based on the example described in FIG. 2, the target CSI-RS port 1 corresponds to 2 resource units, 2 If the resource unit is RE1 and RE2, the target CSI-RS port 1 also corresponds to a code of length 2. After the CSI-RS corresponding to the resource number is spread by the code of length 2, the CSI-RS on RE1 is used.
  • the CSI-RS on RE2 is CSI-RS2
  • the precoding matrix corresponding to the terminal is CSI-RS2
  • the base station has two antenna ports, and the precoding matrix corresponding to the terminal is Then, the precoding matrix can be multiplied by the reference signal CSI-RS1 on RE1 respectively (the result of the multiplication is the target CSI-RS on RE1), and the base station transmits the multiplication on RE1 through antenna port 1 and antenna port 2
  • the result is obtained by multiplying the precoding matrix by the reference signal CSI-RS2 on RE2 (the result of the multiplication is the target CSI-RS on RE2), and the base station transmits the multiplication on RE2 through antenna port 1 and antenna port 2.
  • CSI-RS1 and CSI-RS2 are obtained according to CSI-RS spreading, CSI-RS1 and CSI-RS2 are substantially different forms of CSI-RS, and thus, the target CSI-RS is the resource number.
  • the data transmitted by the base station on RE1 and the data transmitted on RE2 are substantially different forms of the target CSI-RS.
  • the example 1 merely exemplarily shows a process of determining a target CSI-RS corresponding to a resource number when the resource number is a target CSI-RS port number, when the resource number is an orthogonal matrix.
  • the target CSI-RS can be determined by a related method in the prior art.
  • the base station sends a target CSI-RS on the time-frequency resource to the terminal on each time-frequency resource corresponding to the resource number.
  • examples 1, 2 on RE1 based if the base station antenna ports two antenna ports, the base station 1 transmits H 1 ⁇ CSI-RS1 on RE1, transmitting antenna H 1 ⁇ CSI-RS2, base station on RE2 port H 2 ⁇ CSI-RS1 is transmitted, and H 2 ⁇ CSI-RS2 is transmitted on RE2.
  • the base station sends indication information to the terminal, where the indication information is used to indicate the resource number to the terminal.
  • the step 103 is specifically implemented, where the base station sends the indication information to the terminal on a Physical Downlink Control Channel (PDCCH), where the base station is in a PDCCH of a different subframe.
  • PDCCH Physical Downlink Control Channel
  • the resource numbers indicated by the indication information sent to the terminal are the same or different.
  • the information terminal that is sent by the base station on the PDCCH can be quickly determined. Therefore, the base station can send indication information on each subframe for the terminal to measure the channel quality according to the resource number allocated by the base station for the terminal.
  • the terminal receives information sent by the base station on each time-frequency resource.
  • the terminal receives the indication information sent by the base station.
  • the step 105 is specifically implemented, where the terminal receives the indication information sent by the base station on a PDCCH, and the terminal sends the The resource numbers indicated by the indication information are the same or different.
  • the terminal determines, according to the indication information, a resource number of the terminal.
  • the terminal determines the target information in the information according to the resource number of the terminal, where the target information is sent by the base station to the terminal on a time-frequency resource corresponding to the resource number of the terminal. Information.
  • the target information includes information received on RE1 and information received on RE2, wherein the information received on RE1 is H 1 ⁇ CSI-RS1 and H 2 contaminated by the channel.
  • the information received on RE1 is H 1 ⁇ CSI-RS1 and H 2 contaminated by the channel.
  • the information received on RE2 is the superposition of H 1 ⁇ CSI-RS2 and H 2 ⁇ CSI-RS2 contaminated by the channel.
  • the step 107 is specifically implemented, where the terminal determines information received on a time-frequency resource corresponding to the resource number of the terminal, and the terminal uses a code pair corresponding to the resource number of the terminal.
  • the information received on the time-frequency resource corresponding to the resource number of the terminal is despread to obtain the target information.
  • the base station spreads the CSI-RS corresponding to the resource number of the terminal, and therefore, the terminal After receiving the information on the time-frequency resource corresponding to the resource number of the terminal, the information needs to be despread to obtain the target information.
  • the terminal measures channel quality according to the target information, and determines a CQI according to the measured channel quality.
  • the terminal In the process of measuring the CQI according to the target information, the terminal needs to determine the interference. Specifically, the terminal may subtract the target information from the information sent on each time-frequency resource, and consider the remaining information as other than MU-MIMO. The sum of interference between the terminal and neighboring cell users.
  • the terminal sends the CQI to the base station.
  • the base station receives a CQI sent by the terminal.
  • CQI is used to indicate channel quality.
  • the base station dynamically indicates to the terminal the resource number allocated by the terminal, and after receiving the resource number indicated by the base station, the terminal determines the target information according to the information received by the resource number on each time-frequency resource.
  • the CQI is measured according to the target information and is fed back to the base station. After the CQI is measured according to the information received on each time-frequency resource, all the measured CQIs are fed back to the base station, which greatly reduces the resource consumption of the terminal.
  • the method further includes:
  • the base station determines a modulation and coding strategy corresponding to the terminal according to the CQI, and sends a modulation and coding policy to the terminal, where the terminal receives the modulation and coding strategy sent by the base station;
  • the terminal determines a demodulation and decoding strategy for demodulating and decoding the data transmitted by the base station according to the modulation and coding strategy.
  • the method for determining a modulation and coding strategy according to the CQI can be referred to the prior art.
  • the modulation and coding policy sent by the base station to the terminal may be sent by using control signaling, and the data sent by the base station is data modulated and encoded by the modulation and coding strategy.
  • the sending, by the base station, the indication information to the terminal on the PDCCH the: the base station sending an uplink scheduling indication information to the terminal, where the uplink scheduling indication information includes the indication information; or The base station sends downlink scheduling indication information to the terminal, where the downlink scheduling indication information includes the indication information.
  • the receiving, by the terminal, the indication information that is sent by the base station on the PDCCH includes: receiving, by the terminal, uplink scheduling indication information that is sent by the base station, where the uplink scheduling indication information includes the indication information; or The terminal receives the downlink scheduling indication information sent by the base station, where the downlink scheduling indication information includes the indication information.
  • the method further includes:
  • the base station sends the indication information, the target CSI-RS, and a downlink data resource allocation manner to the terminal in the Mth subframe, where the terminal measures, by the terminal, the M+K subframes in the MeNB.
  • the channel quality of the data sent, M and K are integers greater than or equal to 1;
  • the base station sends, to the terminal, a modulation and coding policy corresponding to the terminal, in the M+Kth subframe, where the base station allocates a physical resource block PRB for the target CSI-RS in the Mth subframe.
  • the number and location are the same as the number and location of PRBs occupied by the data channel transmitted by the base station in the M+K subframes;
  • the terminal measures channel quality of data sent by the base station in the M+K subframes according to the received Mth subframe sent by the base station.
  • the optional method is such that the bandwidth of the target CSI-RS and the bandwidth of the data are consistent, and the UE can measure the target CSI-RS and the feedback CQI within the corresponding bandwidth, thereby reducing resource consumption of the uplink feedback.
  • the data resource allocation mode and the modulation and coding policy are delivered together in the control channel.
  • the base station may determine the time-frequency resource location for transmitting the reference signal to the terminal according to the resource number allocated for the terminal, and the modulation and coding strategy needs to be based on CQI is determined. Therefore, the data resource allocation mode and the indication information may be sent to the terminal on the PDCCH in one subframe. After the modulation and coding policy of the terminal is determined, the modulation and coding policy is sent to the terminal on the PDCCH of another subframe.
  • the method further includes: the base station sending, to the terminal, trigger information, where the trigger information is used to trigger the terminal to use each time frequency corresponding to the resource number indicated in the indication information.
  • the information received on the resource measures the channel quality and/or the second Rank, and the terminal receives the trigger information sent by the base station; the terminal determines the measured channel quality and/or the second Rank according to the trigger information.
  • a description of the second Rank can be found below.
  • the indication information and the trigger information may also include the indication information (or the trigger information) in the uplink scheduling indication information, and the trigger information (or the indication information) is included in the downlink scheduling indication information.
  • the indication information and the trigger information can also be included in the same message.
  • the resource number is a resource number of R resources included in the resource pool, where the indication information includes R bits, and the rth bit of the R bits is used to indicate the R Whether the rth resource in the resource is allocated to the terminal, R is large An integer equal to 2, r is an integer greater than or equal to 1 and less than or equal to R; or, the indication information includes 3 bits, and when the values of the 3 bits are different, the resource numbers indicated in the indication information are different. Or, the indication information includes 4 bits, and when the values of the 4 bits are different, the resource numbers indicated in the indication information are different.
  • the resource number is a resource number of the R resources included in the resource pool
  • the step 106 is included in the specific implementation:
  • the 4 target CSI-RS ports may be indicated by the value of 4 bits, and the bit i (i is an integer greater than or equal to 0 and less than or equal to 3) indication
  • 0001 represents the target CSI-RS port 0
  • 0010 represents the target CSI-RS port 1
  • 1010 represents the target CSI-RS port 3 and the target CSI-RS port 1
  • the terminal determines the indication information.
  • the 4 bits included are 0101, and the terminal determines that the resource number of the terminal is the target CSI-RS port 0 and the target CSI-RS port 2.
  • the base station when the value of the bit is 1, the base station allocates the resource corresponding to the bit to the terminal. In actual implementation, when the value of the bit is 0, the base station indicates the bit. The corresponding resources are allocated to the terminal.
  • one of the R bits may be used to indicate whether one of the R resources is allocated to the terminal, and which bit is used to indicate which resource can be determined by the base station (or the base station and the terminal).
  • the four target CSI-RS ports may be indicated by the value of three bits.
  • the values of the three bits are different, the corresponding target CSI-RS port is used.
  • Different numbers the specific correspondence can be seen in Table 1, where 0, 1, 2, and 3 of the resource number column in Table 1 are the port numbers of the four target CSI-RS ports, and one port number corresponds to one target CSI- RS port.
  • the 8 target CSI-RS ports can be indicated by the value of 4 bits, and when the values of the 4 bits are different, the corresponding target CSI-RS The port number is different.
  • Table 2 The number of 0-7 in the resource number column in Table 2 is the port number of the eight target CSI-RS ports. One port number corresponds to one target CSI-RS. port.
  • the method further includes:
  • the terminal determines that the number of the resource number is a value of a first Rank, where the first Rank is an initial Rank determined by the base station for the terminal;
  • the terminal measures a second Rank according to the target information and the first Rank, and determines an RI according to the measured second Rank, where a second Rank corresponding to the RI is less than or equal to the first Rank;
  • the terminal sends the RI to the base station
  • the base station receives an RI sent by the terminal
  • the base station determines the second Rank according to the RI
  • the base station pre-codes a data stream sent by the terminal by using a precoding matrix corresponding to the terminal, and sends the data stream on a data port, where the number of data ports is the first Rank
  • the value of the data stream is the same as the value of the second Rank, and the second Rank is less than or equal to the first Rank.
  • the data port refers to a port after adding a precoding matrix to the antenna port, and the data port is used for transmitting data.
  • the precoding matrix used by the target CSI-RS port of the terminal is added to the antenna port.
  • the precoding matrices are the same precoding matrix.
  • the terminal is a terminal in a plurality of terminals in the MU-MIMO terminal, since the base station determines that the plurality of terminals form the MU-MIMO, the precoding matrix is re-determined for each terminal, thereby making the terminal The CQI reported before the MU-MIMO is inaccurate. Therefore, the terminal needs to re-feed back the CQI for each terminal. Since the correlation between the Rank and the CQI is high, after the CQI changes, if the base station still sends the terminal to the terminal according to the first Rank. The data may cause the terminal to not correctly decode the data.
  • the terminal further determines the second Rank according to the target information, and feeds back the RI to the base station, where the base station finally determines the second Rank as the terminal corresponding. Rank, thereby ensuring that the terminal can correctly decode the data.
  • the base station still uses the same data port as the first Rank to transmit data, and the precoding matrix used by the data port is The target CSI-RS port uses the same precoding matrix, which ensures the stability of interference between multiple terminals.
  • the terminal may determine, according to the number of resource numbers indicated in the indication information, the number of the first RI, and the number of the resource numbers, and the value of the first RI.
  • the terminal when the terminal measures the second Rank according to the target information, when the value of the first Rank is 1 (that is, the number of resource numbers indicated in the indication information is 1), since the terminal corresponding to the leader has a minimum of 1, therefore, After receiving the indication information, the terminal may only determine the CQI according to the target information, and does not re-determine the second Rank; when the value of the first Rank is greater than 1 (that is, the number of resource numbers indicated in the indication information is greater than 1), the terminal After receiving the indication information, the CQI when Rank is a different value (the value of Rank is greater than or equal to 1) may be sequentially determined with the value of the first Rank as an upper limit, and finally, the Rank that can maximize the throughput rate may be selected. As the second Rank, the second Rank will be The corresponding RI and CQI are fed back to the base station.
  • each data port of the base station transmits one data stream, and the data transmitted by the two data ports are respectively:
  • the terminal calculates a CQI corresponding to each data stream based on the assumption, wherein x (0) (i) represents the i-th data symbol in the first data stream, and x (1) (i) represents the second data stream.
  • the i-th data symbol, y (0) (k) represents the k-th data symbol transmitted by the first data port, and y (1) (k) represents the k-th data symbol transmitted by the second data port, i , k is an integer greater than or equal to 0.
  • the terminal calculates a CQI corresponding to the data stream based on the assumption, wherein x(p) represents the Pth data symbol in the data stream, P is equal to 2i or 2i+1, and y (0) (q) represents the first data.
  • the terminal calculates a CQI corresponding to the data stream based on the assumption, wherein x(p) represents the Pth data symbol in the data stream, P is equal to 2i or 2i+1, and y (0) (q) represents the first data.
  • Scenario 2 The number of resource numbers allocated by the base station to the terminal is 3.
  • the throughput rate is reported to the base station by the Rank (the second Rank) with the highest throughput rate and the RI and CQI corresponding to the Rank.
  • the data transmitted on the three data ports, the data sent by the base station on each data port is:
  • the terminal calculates a CQI corresponding to each data stream based on the assumption, wherein x (0) (2i) represents the 2ith data symbol in the 1st data stream, and x (1) (i) represents the second data stream.
  • the i-th data symbol, x (0) (2i+1) represents the 2i+1th data symbol in the first data stream;
  • y (p) (k) represents the transmission of the p+1th data port k data symbols, P is 0, 1, or 2, and i and k are integers greater than or equal to zero.
  • the data port and the third data port are transmitted in turn, and the 2k (k is an integer greater than or equal to 1) data symbols transmitted by the base station on the three data ports are:
  • the 2k+1th data symbols transmitted by the base station on the three data ports are:
  • the terminal calculates a CQI corresponding to the two data streams based on the assumption, wherein x (p) (2i) represents the 2ith data symbol in the p+1th data stream, and x (p) (2i+1) represents the pth 2i+1th data symbols in +1 data streams, p is 0 or 1; y (q) (2k) represents the 2kth data symbol transmitted by the q+1th data port, y (q) (2k +1) indicates the 2k+1th data symbol transmitted by the q+1th data port, q is 0, 1, or 2, and i is an integer greater than or equal to 0.
  • the terminal calculates a CQI corresponding to the data stream based on the assumption, where x(p) represents the pth data symbol in the data stream, p is 3i, 3i+1 or 3i+2; y (0) (q) represents The qth data symbol transmitted by the first data port, y (1) (q) represents the qth data symbol transmitted by the second data port, and y (2) (q) represents the third data port transmitted q data symbols, q is 3k, 3k+1 or 3k+2, and i and k are integers greater than or equal to zero.
  • Scenario 3 The number of resource numbers allocated by the base station to the terminal is 4.
  • the data is transmitted on the three data ports and the fourth data port, and the data sent by the base station on each data port is:
  • the terminal calculates a CQI corresponding to two data streams based on the assumption, wherein x (0) (p) represents the pth data symbol in the first data stream, and x (1) (p) represents the second data stream.
  • the pth data symbol, p is 2i or 2i+1;
  • y (q) (k) represents the kth data symbol transmitted by the q+1th data port, q is 0, 1, 2 or 3, i, k is an integer greater than or equal to zero.
  • the second data stream is transmitted on the third data port and the fourth data port, and the data sent by the third data port and the fourth data port of the base station is:
  • the terminal calculates a CQI corresponding to two data streams based on the assumption, wherein x (0) (p) represents the pth data symbol in the first data stream, and x (1) (p) represents the second data stream.
  • the pth data symbol, p is 2i or 2i+1;
  • y (q) (2k) represents the 2kth data symbol transmitted by the q+1th data port, and y (2) (2k+1) represents the 3rd
  • the 2k+1th data symbol sent by the data port, y (3) (2k+1) represents the 2k+1th data symbol transmitted by the 4th data port, and q is 0, 1, 2 or 3, i, k is an integer greater than or equal to zero.
  • the data sent with the second data port is:
  • the second data stream is transmitted in turn on the third data port and the fourth data port, and the data sent by the base station on the third data port and the fourth data port are:
  • the terminal calculates a CQI corresponding to two data streams based on the assumption, wherein x (0) (p) represents the pth data symbol in the first data stream, and x (1) (p) represents the second data stream.
  • the pth data symbol, p is 2i or 2i+1;
  • y (q) (2k) represents the 2kth data symbol transmitted by the q+1th data port, and y (q) (2k+1) represents the qth
  • the 2k+1th data symbol transmitted by +1 data ports, q is 0, 1, 2 or 3, and i and k are integers greater than or equal to 0.
  • the data sent by the base station on the four data ports is:
  • the terminal calculates a CQI corresponding to the data stream based on the assumption, where x(p) represents the pth data symbol in the data stream, and p is 4i, 4i+1, 4i+2, or 4i+3; y (0) (q) indicates the qth data symbol transmitted by the 1st data port, y (1) (q) indicates the qth data symbol transmitted by the 2nd data port, and y (2) (q) indicates the 3rd data The qth data symbol sent by the port, y (3) (q) represents the qth data symbol transmitted by the 4th data port, q is 4k, 4k+1, 4k+2 or 4k+3, i, k are Is an integer greater than or equal to 0.
  • the terminal calculates a CQI corresponding to the data stream based on the assumption, where x(p) represents the pth data symbol in the data stream, and p is 4i, 4i+1, 4i+2, or 4i+3; y (0) (q) indicates the qth data symbol transmitted by the 1st data port, y (1) (q) indicates the qth data symbol transmitted by the 2nd data port, and y (2) (q) indicates the 3rd data
  • the qth data symbol q,y (3) (q) sent by the port indicates the qth data symbol transmitted by the 4th data port, q is 4k, 4k+1, 4k+2 or 4k+3, i, k Both are integers greater than or equal to zero.
  • the embodiment of the present invention further provides a device 40 for measuring CQI, as shown in FIG. 4, including:
  • the first determining unit 401 is configured to determine a target CSI-RS on each time-frequency resource corresponding to the resource number of the terminal, where the target CSI-RS is a pre-coded CSI-RS, and the time-frequency resource is used. a resource unit for transmitting the CSI-RS or the target CSI-RS;
  • the first sending unit 402 is configured to send the target CSI-RS on the time-frequency resource to the terminal on each time-frequency resource corresponding to the resource number;
  • the second sending unit 403 is configured to send indication information to the terminal, where the indication information is used to indicate the resource number to the terminal;
  • the first receiving unit 404 is configured to receive a CQI sent by the terminal, where the CQI is used to indicate channel quality.
  • the second sending unit 403 is specifically configured to:
  • the indication information is sent to the terminal on the PDCCH, and the resource number indicated by the indication information sent by the second sending unit 403 to the terminal on the PDCCH of different subframes is the same or different.
  • the apparatus 40 further includes a second receiving unit 405, a second determining unit 406, a precoding unit 407, and a third sending unit 408;
  • the second receiving unit 405 is configured to receive an RI sent by the terminal, where the RI is measured by the terminal according to the information received on each time-frequency resource corresponding to the resource number indicated in the indication information. a second Rank, and an RI determined according to the measured second Rank;
  • the second determining unit 406 is configured to determine the second Rank according to the RI
  • the precoding unit 407 is configured to perform precoding on a data stream sent by the terminal by using a precoding matrix corresponding to the terminal;
  • the third sending unit 408 is configured to send the data stream on a data port, where the number of data ports is the same as the value of the first Rank, the number of layers of the data stream and the second Rank The value is the same, the second Rank is less than or equal to the first Rank, and the first Rank is an initial Rank determined by the base station for the terminal.
  • the device 40 further includes a fourth sending unit 409;
  • the fourth sending unit 409 is configured to send the resource pool to the terminal by using RRC signaling, where the resource number is a resource number of R resources included in the resource pool, and one resource corresponds to one resource number, where R is An integer greater than or equal to 2.
  • the resource number is a target CSI-RS port number, a row number of an orthogonal matrix, or a column number of an orthogonal matrix, and a combination of N resource units and a code of length N corresponds to one target CSI-RS port.
  • one resource unit corresponds to one target CSI-RS port, and N is an integer greater than or equal to 2.
  • the first determining unit 401 is specifically configured to:
  • the first determining unit 401 is specifically configured to:
  • the code corresponding to the resource number is a code of length N corresponding to the target CSI-RS port, where the resource number is a row of an orthogonal matrix, where the resource number is a target CSI-RS port number.
  • the code corresponding to the resource number is a row element corresponding to the row number.
  • the code corresponding to the resource number is a column element corresponding to the column number.
  • the resource number is a resource number of R resources included in the resource pool, where the indication information includes R bits, and the rth bit of the R bits is used to indicate the R Whether the rth resource of the resources is allocated to the terminal, R is an integer greater than or equal to 2, r is an integer greater than or equal to 1 and less than or equal to R; or, the indication information includes 3 bits, and the 3 When the value of the bit is different, the resource number indicated in the indication information is different; or the indication information includes 4 bits, and when the values of the 4 bits are different, the resource number indicated in the indication information different.
  • the device 40 further includes a fifth sending unit 410;
  • the fifth sending unit 410 is configured to send, to the terminal, trigger information, where the trigger information is used to trigger the terminal to receive according to each time-frequency resource corresponding to the resource number indicated in the indication information.
  • the incoming information measures channel quality and/or second Rank.
  • the second sending unit 403 is specifically configured to:
  • uplink scheduling indication information Sending, to the terminal, uplink scheduling indication information, where the uplink scheduling indication information includes the indication information;
  • the apparatus 40 further includes a sixth sending unit 411, configured to:
  • Channel quality, M, K are integers greater than or equal to 1;
  • the device provided by the embodiment of the present invention may dynamically indicate to the terminal the resource number allocated to the terminal, and after receiving the resource number indicated by the base station, the terminal determines the target information according to the information received by the resource number on each time-frequency resource.
  • the CQI is measured according to the target information and is fed back to the base station. After the CQI is measured according to the information received on each time-frequency resource, all the measured CQIs are fed back to the base station, which greatly reduces the resource consumption of the terminal.
  • the various units in the device 40 for measuring CQI may be embedded in hardware or in a processor independent of the CQI-measuring device 40, or may be stored in software in the memory of the device 40 that measures CQI.
  • the processor may be a central processing unit (CPU), an application specific integrated circuit (ASIC), or configured to implement the present invention.
  • CPU central processing unit
  • ASIC application specific integrated circuit
  • the embodiment of the present invention further provides a device 60 for measuring CQI, as shown in FIG. 6, comprising: a memory 601, a processor 602, a transmitter 603, and a receiver 604;
  • the memory 601, the processor 602, the transmitter 603, and the receiver 604 are coupled together by a bus system 605.
  • the memory 601 may include a random access memory, and may also include a non-volatile memory, such as at least A disk storage.
  • the bus system 605 can be an Industry Standard Architecture (ISA) bus, a Peripheral Component (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus.
  • ISA Industry Standard Architecture
  • PCI Peripheral Component
  • EISA Extended Industry Standard Architecture
  • the bus system 605 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 6, but it does not mean that there is only one bus or one type of bus.
  • the memory 601 is configured to store code, and the processor 602 performs the following actions according to the code:
  • a target CSI-RS on each time-frequency resource corresponding to the resource number of the terminal, where the target CSI-RS is a pre-coded CSI-RS, where the time-frequency resource is used to transmit the CSI-RS or a resource unit of the target CSI-RS;
  • the transmitter 603 is configured to send, by using the time-frequency resource corresponding to the resource number, a target CSI-RS on the time-frequency resource to the terminal;
  • the transmitter 603 is further configured to send indication information to the terminal, where the indication information is used to indicate the resource number to the terminal;
  • the receiver 604 is configured to receive a CQI sent by the terminal, where the CQI is used to indicate channel quality.
  • the transmitter 603 is specifically configured to:
  • the transmitter 603 indicates the indication information sent by the indication information to the terminal on the PDCCH of different subframes.
  • the source numbers are the same or different.
  • the receiver 604 is further configured to receive an RI sent by the terminal, where the RI is received by the terminal according to each time-frequency resource corresponding to the resource number indicated in the indication information.
  • the information is measured by the second Rank, and the RI determined according to the measured second Rank;
  • the processor 602 is further configured to determine the second Rank according to the RI;
  • the processor 602 is further configured to perform precoding on a data stream sent by the terminal by using a precoding matrix corresponding to the terminal;
  • the transmitter 603 is further configured to send the data stream on a data port, where the number of data ports is the same as the value of the first Rank, the number of layers of the data stream and the value of the second Rank. Similarly, the second Rank is less than or equal to the first Rank, and the first Rank is an initial Rank determined by the base station for the terminal.
  • the transmitter 603 is further configured to:
  • the resource pool is sent to the terminal by using RRC signaling, where the resource number is a resource number of R resources included in the resource pool, one resource corresponds to one resource number, and R is an integer greater than or equal to 2.
  • the resource number is a target CSI-RS port number, a row number of an orthogonal matrix, or a column number of an orthogonal matrix, and a combination of N resource units and a code of length N corresponds to one target CSI-RS port.
  • one resource unit corresponds to one target CSI-RS port, and N is an integer greater than or equal to 2.
  • the processor 602 is specifically configured to:
  • the processor 602 is specifically configured to:
  • the code corresponding to the resource number is a code of length N corresponding to the target CSI-RS port, where the resource number is a row of an orthogonal matrix, where the resource number is a target CSI-RS port number.
  • the code corresponding to the resource number is a row element corresponding to the row number.
  • the code corresponding to the resource number is a column element corresponding to the column number.
  • the resource number is a resource number of R resources included in the resource pool, where the indication information includes R bits, and the rth bit of the R bits is used to indicate the R Whether the rth resource of the resources is allocated to the terminal, R is an integer greater than or equal to 2, r is an integer greater than or equal to 1 and less than or equal to R; or, the indication information includes 3 bits, and the 3 When the value of the bit is different, the resource number indicated in the indication information is different; or the indication information includes 4 bits, and when the values of the 4 bits are different, the resource number indicated in the indication information different.
  • the transmitter 603 is further configured to:
  • trigger information Sending, to the terminal, trigger information, where the trigger information is used to trigger the terminal to measure channel quality and/or according to information received on each time-frequency resource corresponding to the resource number indicated in the indication information. Two Rank.
  • the transmitter 603 is specifically configured to:
  • uplink scheduling indication information Sending, to the terminal, uplink scheduling indication information, where the uplink scheduling indication information includes the indication information;
  • the transmitter 603 is further configured to:
  • Channel quality, M, K are integers greater than or equal to 1;
  • the device provided by the embodiment of the present invention may dynamically indicate to the terminal the resource number allocated to the terminal, and after receiving the resource number indicated by the base station, the terminal determines the target information according to the information received by the resource number on each time-frequency resource.
  • the CQI is measured according to the target information and is fed back to the base station. After the CQI is measured according to the information received on each time-frequency resource, all the measured CQIs are fed back to the base station, which greatly reduces the resource consumption of the terminal.
  • the embodiment of the present invention further provides a device 70 for measuring CQI, as shown in FIG. 7, comprising:
  • the first receiving unit 701 is configured to receive information sent by the base station on each time-frequency resource;
  • the second receiving unit 702 is configured to receive indication information that is sent by the base station, where the indication information is used to indicate, to the terminal, a resource number of the terminal;
  • a first determining unit 703 configured to determine, according to the indication information, resources of the terminal number
  • the second determining unit 704 is configured to determine target information in the information according to the resource number of the terminal, where the target information is that the received base station is on a time-frequency resource corresponding to the resource number of the terminal.
  • the first executing unit 705 is configured to measure channel quality according to the target information, and determine a CQI according to the measured channel quality;
  • the first sending unit 706 is configured to send the CQI to the base station.
  • the second receiving unit 702 is specifically configured to:
  • the indication information sent by the base station is received on the PDCCH, and the resource numbers indicated by the indication information sent by the base station that are received by the second receiving unit 702 on the PDCCH of different subframes are the same or different.
  • the apparatus 70 further includes a third determining unit 707, a second executing unit 708, and a second sending unit 709;
  • the third determining unit 707 is configured to determine that the number of the resource numbers is a value of a first Rank, where the first Rank is an initial Rank determined by the base station for the terminal;
  • the second execution unit 708 is configured to measure a second Rank according to the target information and the first Rank, and determine an RI according to the measured second Rank, where the second Rank corresponding to the RI is less than or equal to Said first Rank;
  • the second sending unit 709 is configured to send the RI to the base station.
  • the apparatus 70 further includes a third receiving unit 710, configured to:
  • a resource pool sent by the base station where the resource number is The resource number of the R resources included in the resource pool, one resource corresponds to one resource number, and R is an integer greater than or equal to 2.
  • the resource number is a target CSI-RS port number, a row number of an orthogonal matrix, or a column number of an orthogonal matrix, and a combination of N resource units and a code of length N corresponds to one target CSI-RS port.
  • one resource unit corresponds to one target CSI-RS port, and N is an integer greater than or equal to 2.
  • the second determining unit 704 is specifically configured to:
  • the code corresponding to the resource number is a code of length N corresponding to the target CSI-RS port, where the resource number is a row of an orthogonal matrix, where the resource number is a target CSI-RS port number.
  • the code corresponding to the resource number is a row element corresponding to the row number.
  • the code corresponding to the resource number is a column element corresponding to the column number.
  • the first determining unit 703 is specifically configured to:
  • R is an integer greater than or equal to 2
  • r is an integer greater than or equal to 1 and less than or equal to R;
  • the apparatus 70 further includes a fourth receiving unit 711 and a fourth determining unit 712:
  • the fourth receiving unit 711 is configured to receive trigger information sent by the base station
  • the fourth determining unit 712 is configured to determine, according to the trigger information, a measured channel quality and/or a second Rank.
  • the second receiving unit 702 is specifically configured to:
  • the device 70 further includes a measuring unit 713, configured to:
  • the Mth subframe includes the indication information, the target CSI-RS, and a downlink data resource allocation manner, where the M+K subframes include a modulation and coding strategy corresponding to the terminal, and the base station is in the
  • the number and location of PRBs allocated to the target CSI-RS in the M subframes are the same as the number and location of PRBs occupied by the data channel transmitted by the base station in the M+K subframes, M and K are both Is an integer greater than or equal to 1.
  • the device provided by the embodiment of the present invention may receive the resource number indicated by the base station, determine target information according to the information received by the resource number on each time-frequency resource, measure the CQI according to the target information, and feed back to the base station, without After the CQI is measured on the information received on each time-frequency resource, all the measured CQIs are fed back to the base station, which greatly reduces the resource consumption of the terminal.
  • the various units in the device 70 for measuring CQI may be embedded in hardware or in a processor independent of the CQI-measuring device 70, or may be stored in software in the memory of the device 70 that measures CQI.
  • the processor may be a CPU, an ASIC, or one or more integrated circuits configured to implement embodiments of the present invention.
  • the embodiment of the present invention further provides a device 90 for measuring CQI, as shown in FIG. 9, comprising: a receiver 901, a memory 902, a processor 903, and a transmitter 904;
  • the receiver 901, the memory 902, the processor 903, and the transmitter 904 are coupled together by a bus system 905, wherein the memory 902 may include a random access memory, and may also include a non-volatile memory, such as at least A disk storage.
  • the memory 902 can be an ISA bus, a PCI bus, or an EISA bus.
  • the memory 902 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 9, but it does not mean that there is only one bus or one type of bus.
  • the receiver 901 is configured to receive information sent by the base station on each time-frequency resource
  • the receiver 901 is further configured to receive indication information that is sent by the base station, where the indication information is used to indicate, to the terminal, a resource number of the terminal;
  • the memory 902 is configured to store code, and the processor 903 performs the following actions according to the code:
  • the time-frequency resource is a resource unit for transmitting a CSI-RS or a target CSI-RS, and the target CSI-RS is a pre-coded CSI-RS;
  • the transmitter 904 is configured to send the CQI to the base station.
  • the receiver 901 is specifically configured to:
  • the indication information sent by the base station is received on the PDCCH, and the resource number indicated by the indication information sent by the base station that is received by the receiver 901 on the PDCCH of different subframes is the same or different.
  • the processor 903 is further configured to determine that the number of the resource numbers is a value of a first Rank, where the first Rank is an initial Rank determined by the base station for the terminal;
  • the processor 903 is further configured to measure a second Rank according to the target information and the first Rank, and determine an RI according to the measured second Rank, where a second Rank corresponding to the RI is less than or equal to the First Rank;
  • the transmitter 904 is further configured to send the RI to the base station.
  • the receiver 901 is further configured to:
  • the resource pool sent by the base station, where the resource number is a resource number of R resources included in the resource pool, one resource corresponds to one resource number, and R is an integer greater than or equal to 2.
  • the resource number is a target CSI-RS port number, a row number of an orthogonal matrix, or a column number of an orthogonal matrix, and a combination of N resource units and a code of length N corresponds to one target CSI-RS port.
  • one resource unit corresponds to one target CSI-RS port, and N is an integer greater than or equal to 2.
  • the processor 903 is specifically configured to:
  • the resource number when the resource number is a target CSI-RS port number, the resource number corresponds to The code is a code of length N corresponding to the target CSI-RS port.
  • the code corresponding to the resource number is a row element corresponding to the line number.
  • the code corresponding to the resource number is a column element corresponding to the column number.
  • the processor 903 is specifically configured to:
  • R is an integer greater than or equal to 2
  • r is an integer greater than or equal to 1 and less than or equal to R;
  • the receiver 901 is further configured to receive trigger information sent by the base station, where the processor 903 is further configured to determine, according to the trigger information, a measured channel quality and/or a second Rank.
  • the receiver 901 is specifically configured to:
  • processor 903 is further configured to:
  • the Mth subframe includes the indication information, the target CSI-RS, and a downlink data resource allocation manner, where the M+K subframes include a modulation and coding strategy corresponding to the terminal, and the base station is in the
  • the number and location of PRBs allocated to the target CSI-RS in the M subframes are the same as the number and location of PRBs occupied by the data channel transmitted by the base station in the M+K subframes, M and K are both Is an integer greater than or equal to 1.
  • the device provided by the embodiment of the present invention may receive the resource number indicated by the base station, determine target information according to the information received by the resource number on each time-frequency resource, measure the CQI according to the target information, and feed back to the base station, without After the CQI is measured on the information received on each time-frequency resource, all the measured CQIs are fed back to the base station, which greatly reduces the resource consumption of the terminal.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the modules is only a logical function division.
  • there may be another division manner for example, multiple modules or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the modules described as separate components may or may not be physically separated.
  • the components displayed as modules may or may not be physical modules, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional module in each embodiment of the present invention may be integrated into one processing module, or two or more modules may be integrated into one module.
  • the above integrated modules can be implemented in the form of hardware or in the form of hardware plus software function modules.
  • the above integrated module implemented in the form of a software function module can be stored in a Computers can be read from the storage medium.
  • the software functional modules described above are stored in a storage medium and include instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform some of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, and the program code can be stored. Medium.

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Abstract

本发明实施例公开了一种测量信道质量索引的方法及装置，涉及通信技术领域，用以降低终端的资源消耗。该方法包括：基站确定终端的资源号对应的每个时频资源上的目标CSI-RS，所述目标CSI-RS为经过预编码后的CSI-RS，所述时频资源为用于传输所述CSI-RS或所述目标CSI-RS的资源单位；所述基站在所述资源号对应的每个时频资源上向所述终端发送该时频资源上的目标CSI-RS；所述基站向所述终端发送用于指示所述终端的资源号的指示信息；所述基站接收所述终端发送的用于指示信道质量的CQI。

Description

一种测量信道质量索引的方法及装置 技术领域
本发明涉及通信技术领域，尤其涉及一种测量信道质量索引(Channel Quality Index，简称CQI)的方法及装置。
背景技术
长期演进(Long Term Evolution，简称LTE)系统广泛采用了多输入多输出(Multiple Input and Multiple Output，简称MIMO)技术，在MIMO系统中，普遍采用预编码技术提高信号传输质量/速率，LTE系统在频分复用(Frequency Division Duplexing，简称FDD)模式下，终端根据接收到的基站发送的信道状态信息参考信号(Channel State Information Reference Signal，简称CSI-RS)确定下行信道信息，并向基站反馈，下行信道信息包括预编码矩阵索引(Precoding Matrix Index，PMI)、秩索引(Rank Index，简称RI)和CQI。目前，终端基于单用户MIMO(Single-User MIMO，简称SU-MIMO)的假设确定下行信道信息，当基站接收到多个终端发送的下行信道信息之后，若确定选择多个终端做多用户MIMO(Multi-User MIMO，简称MU-MIMO)，为了降低多个终端之间的干扰，基站根据每个终端反馈的下行信道信息，采用预设算法(例如，迫零算法)重新为每个终端构造预编码矩阵、重新确定信道的秩(Rank)并为每个终端分配对应的CSI-RS端口，由于终端反馈的CQI是基于SU-MIMO的假设，在MU-MIMO场景中，该CQI与实际的下行信道质量并不匹配。
为了解决该问题，基站基于为终端重新构造的预编码矩阵，采用该预编码矩阵对CSI-RS进行预编码，并将预编码后的CSI-RS向该终端发送，该终端基于该CSI-RS重新测量CQI，并向基站反馈。 该情况下，基站根据该CSI-RS重新测量CQI时，需要测量每个CSI-RS端口对应的信道的信道质量(即需要根据接收到的每个CSI-RS端口对应的时频资源上的信息测量该CSI-RS端口对应的信道的信道质量)，并将所有CSI-RS端口对应的信道的信道质量反馈给基站，而实际上基站只需要该终端对应的CSI-RS端口对应的信道的信道质量，因此，会造成了上行资源的浪费。
发明内容
本发明的实施例提供一种测量信道质量索引的方法及装置，用以降低终端的资源消耗。
为达到上述目的，本发明的实施例采用如下技术方案：
第一方面，提供一种测量CQI的方法，包括：
基站确定终端的资源号对应的每个时频资源上的目标CSI-RS，所述目标CSI-RS为经过预编码后的CSI-RS，所述时频资源为用于传输所述CSI-RS或所述目标CSI-RS的资源单位；
所述基站在所述资源号对应的每个时频资源上向所述终端发送该时频资源上的目标CSI-RS；
所述基站向所述终端发送用于指示所述终端的资源号的指示信息；
所述基站接收所述终端发送的用于指示信道质量的CQI。
可选的，所述基站向所述终端发送指示信息，包括：
所述基站在PDCCH上向所述终端发送所述指示信息，所述基站在不同子帧的PDCCH上向所述终端发送的所述指示信息指示的资源号相同或不同。
其中，由于基站在PDCCH上发送的信息终端可以快速确定，因 此，基站可以在每个子帧上发送指示信息，用于终端根据基站为该终端分配的资源号测量信道质量。
可选的，所述指示信息中指示的所述资源号的个数与第一Rank的数值相同，所述方法还包括：
所述基站接收所述终端发送的RI，所述RI为所述终端根据所述指示信息中指示的所述资源号对应的每个时频资源上接收到的信息测量第二Rank，并根据测量得到的第二Rank确定的RI；
所述基站根据所述RI确定所述第二Rank；
所述基站采用所述终端对应的预编码矩阵对向所述终端发送的数据流进行预编码，并在数据端口上发送所述数据流，所述数据端口个数与所述第一Rank的数值相同，所述数据流的层数与所述第二Rank的数值相同，所述第二Rank小于等于所述第一Rank，所述第一Rank为所述基站为所述终端确定的初始Rank。
由于Rank与CQI之间相关性高，终端在重新反馈CQI之后，若基站仍然根据第一Rank向该终端发送数据，可能会使得该终端无法正确的解码该数据，因此，终端根据目标信息确定第二Rank，并向基站反馈RI，基站最终将第二Rank确定为终端对应的Rank，从而保证了终端可以正确的解码数据。
可选的，所述资源号为资源池中包括的R个资源的资源号，一个资源对应一个资源号，R为大于等于2的整数，所述资源池为所述基站定义的资源池，所述方法还包括：
所述基站通过RRC信令向所述终端发送所述资源池。
可选的，所述资源号为目标CSI-RS端口号、正交矩阵的行号或正交矩阵的列号，N个资源单位和一个长度为N的码的组合对应一个目标CSI-RS端口或1个资源单位对应一个目标CSI-RS端口，N 为大于等于2的整数。
可选的，基站确定终端的资源号对应的每个时频资源上的目标CSI-RS，包括：
所述基站根据所述资源号、所述资源号对应的CSI-RS以及所述预编码矩阵确定所述资源号对应的每个时频资源上发送的目标CSI-RS。
可选的，所述基站根据所述资源号、所述资源号对应的CSI-RS以及所述预编码矩阵确定所述资源号对应的每个时频资源上发送的目标CSI-RS，包括：
所述基站确定所述终端的第一Rank和预编码矩阵；
所述基站根据所述第一Rank为所述终端分配资源号，所述资源号的个数与所述第一Rank的数值相同；
所述基站采用所述资源号对应的码对所述资源号对应的CSI-RS扩频，并采用所述预编码矩阵对扩频后得到的每个CSI-RS进行预编码得到所述资源号对应的每个时频资源上发送的目标CSI-RS；
其中，当所述资源号为目标CSI-RS端口号时，所述资源号对应的码为所述目标CSI-RS端口对应的长度为N的码，当所述资源号为正交矩阵的行号时，所述资源号对应的码为该行号对应的行元素，当所述资源号为正交矩阵的列号时，所述资源号对应的码为该列号对应的列元素。
可选的，所述资源号为资源池中包括的R个资源的资源号，所述指示信息包括R个比特位，所述R个比特位中的第r个比特位用于指示所述R个资源中的第r个资源是否分配给所述终端，R为大于等于2的整数，r为大于等于1小于等于R的整数；或者，所述指示信息包括3个比特位，所述3个比特位的值不同时，所述指示 信息中指示的资源号不同；或者，所述指示信息包括4个比特位，所述4个比特位的值不同时，所述指示信息中指示的资源号不同。
第二方面，提供一种测量CQI的方法，包括：
终端接收基站在各个时频资源上发送的信息；
所述终端接收所述基站发送的用于向所述终端指示所述终端的资源号的指示信息；
所述终端根据所述指示信息确定所述终端的资源号；
所述终端根据所述终端的资源号确定所述信息中的目标信息，所述目标信息为接收到的所述基站在所述终端的资源号对应的时频资源上向所述终端发送的信息，所述时频资源为用于传输CSI-RS或目标CSI-RS的资源单位，所述目标CSI-RS为经过预编码后的CSI-RS；
所述终端根据所述目标信息测量信道质量，并根据测得的信道质量确定CQI；
所述终端向所述基站发送所述CQI。
可选的，所述终端接收所述基站发送的指示信息，包括：
所述终端在PDCCH上接收所述基站发送的所述指示信息，所述终端在不同子帧的PDCCH上接收到的所述基站发送的所述指示信息指示的资源号相同或不同。
其中，由于基站在PDCCH上发送的信息终端可以快速确定，因此，基站可以在每个子帧上发送指示信息，用于终端根据基站为该终端分配的资源号测量信道质量。
可选的，所述指示信息中指示的所述资源号的个数与第一Rank的数值相同，在所述终端根据所述指示信息确定所述终端的资源号 之后，所述方法还包括：
所述终端确定所述资源号的个数为第一Rank的值，所述第一Rank为所述基站为所述终端确定的初始Rank；
所述终端根据所述目标信息和所述第一Rank测量第二Rank，并根据测得的所述第二Rank确定RI，所述RI对应的第二Rank小于等于所述第一Rank；
所述终端向所述基站发送所述RI。
由于Rank与CQI之间相关性高，终端在重新反馈CQI之后，若基站仍然根据第一Rank向该终端发送数据，可能会使得该终端无法正确的解码该数据，因此，终端根据目标信息确定第二Rank，并向基站反馈RI，基站最终将第二Rank确定为终端对应的Rank，从而保证了终端可以正确的解码数据。
可选的，所述资源号为资源池中包括的R个资源的资源号，一个资源对应一个资源号，R为大于等于2的整数，所述方法还包括：
所述终端通过RRC信令接收所述基站发送的所述资源池。
可选的，所述资源号为目标CSI-RS端口号、正交矩阵的行号或正交矩阵的列号，N个资源单位和一个长度为N的码的组合对应一个目标CSI-RS端口或1个资源单位对应一个目标CSI-RS端口，N为大于等于2的整数。
可选的，所述终端根据所述终端的资源号确定所述信息中的目标信息，包括：
所述终端确定在所述终端的资源号对应的时频资源上接收到的信息；
所述终端采用所述终端的资源号对应的码对在所述终端的资源 号对应的时频资源上接收到的信息进行解扩得到所述目标信息；
其中，当所述资源号为目标CSI-RS端口号时，所述资源号对应的码为所述目标CSI-RS端口对应的长度为N的码，当所述资源号为正交矩阵的行号时，所述资源号对应的码为该行号对应的行元素，当所述资源号为正交矩阵的列号时，所述资源号对应的码为该列号对应的列元素。
可选的，所述资源号为资源池中包括的R个资源的资源号，所述终端根据所述指示信息确定所述终端的资源号，包括：
所述终端根据所述指示信息中包括的R个比特位确定所述终端的资源号，所述R个比特位中的第r个比特位用于指示所述R个资源中的第r个资源是否分配给所述终端，R为大于等于2的整数，r为大于等于1小于等于R的整数；或者，
所述终端根据所述指示信息中包括的3个比特位的值确定所述终端的资源号；或者，
所述终端根据所述指示信息中包括的4个比特位的值确定所述终端的资源号。
第三方面，提供一种测量CQI的装置，包括：
第一确定单元，用于确定终端的资源号对应的每个时频资源上的目标CSI-RS，所述目标CSI-RS为经过预编码后的CSI-RS，所述时频资源为用于传输所述CSI-RS或所述目标CSI-RS的资源单位；
第一发送单元，用于在所述资源号对应的每个时频资源上向所述终端发送该时频资源上的目标CSI-RS；
第二发送单元，用于向所述终端发送用于指示所述终端的资源号的指示信息；
第一接收单元，用于接收所述终端发送的用于指示信道质量的CQI。
可选的，所述第二发送单元具体用于：
在PDCCH上向所述终端发送所述指示信息，所述第二发送单元在不同子帧的PDCCH上向所述终端发送的所述指示信息指示的资源号相同或不同。
其中，由于基站在PDCCH上发送的信息终端可以快速确定，因此，基站可以在每个子帧上发送指示信息，用于终端根据基站为该终端分配的资源号测量信道质量。
可选的，所述装置还包括第二接收单元、第二确定单元、预编码单元和第三发送单元；
所述第二接收单元，用于接收所述终端发送的RI，所述RI为所述终端根据所述指示信息中指示的所述资源号对应的每个时频资源上接收到的信息测量第二Rank，并根据测量得到的第二Rank确定的RI；
所述第二确定单元，用于根据所述RI确定所述第二Rank；
所述预编码单元，用于采用所述终端对应的预编码矩阵对向所述终端发送的数据流进行预编码；
所述第三发送单元，用于在数据端口上发送所述数据流，所述数据端口个数与所述第一Rank的数值相同，所述数据流的层数与所述第二Rank的数值相同，所述第二Rank小于等于所述第一Rank，所述第一Rank为所述基站为所述终端确定的初始Rank。
由于Rank与CQI之间相关性高，终端在重新反馈CQI之后，若基站仍然根据第一Rank向该终端发送数据，可能会使得该终端无法正确的解码该数据，因此，终端根据目标信息确定第二Rank，并 向基站反馈RI，基站最终将第二Rank确定为终端对应的Rank，从而保证了终端可以正确的解码数据。
可选的，所述装置还包括第四发送单元；
所述第四发送单元，用于通过RRC信令向所述终端发送所述资源池，所述资源号为资源池中包括的R个资源的资源号，一个资源对应一个资源号，R为大于等于2的整数。
可选的，所述资源号为目标CSI-RS端口号、正交矩阵的行号或正交矩阵的列号，N个资源单位和一个长度为N的码的组合对应一个目标CSI-RS端口或1个资源单位对应一个目标CSI-RS端口，N为大于等于2的整数。
可选的，所述第一确定单元具体用于：
根据所述资源号、所述资源号对应的CSI-RS以及所述预编码矩阵确定所述资源号对应的每个时频资源上发送的目标CSI-RS。
可选的，所述第一确定单元具体用于：
确定所述终端的第一Rank和预编码矩阵；
根据所述第一Rank为所述终端分配资源号，所述资源号的个数与所述第一Rank的数值相同；
采用所述资源号对应的码对所述资源号对应的CSI-RS扩频，并采用所述预编码矩阵对扩频后得到的每个CSI-RS进行预编码得到所述资源号对应的每个时频资源上发送的目标CSI-RS；
其中，当所述资源号为目标CSI-RS端口号时，所述资源号对应的码为所述目标CSI-RS端口对应的长度为N的码，当所述资源号为正交矩阵的行号时，所述资源号对应的码为该行号对应的行元素，当所述资源号为正交矩阵的列号时，所述资源号对应的码为该列号 对应的列元素。
可选的，所述资源号为资源池中包括的R个资源的资源号，所述指示信息包括R个比特位，所述R个比特位中的第r个比特位用于指示所述R个资源中的第r个资源是否分配给所述终端，R为大于等于2的整数，r为大于等于1小于等于R的整数；或者，所述指示信息包括3个比特位，所述3个比特位的值不同时，所述指示信息中指示的资源号不同；或者，所述指示信息包括4个比特位，所述4个比特位的值不同时，所述指示信息中指示的资源号不同。
第四方面，提供一种测量CQI的装置，包括：
第一接收单元，用于接收基站在各个时频资源上发送的信息；
第二接收单元，用于接收所述基站发送的用于向所述终端指示所述终端的资源号的指示信息；
第一确定单元，用于根据所述指示信息确定所述终端的资源号；
第二确定单元，用于根据所述终端的资源号确定所述信息中的目标信息，所述目标信息为接收到的所述基站在所述终端的资源号对应的时频资源上向所述终端发送的信息，所述时频资源为用于传输CSI-RS或目标CSI-RS的资源单位，所述目标CSI-RS为经过预编码后的CSI-RS；
第一执行单元，用于根据所述目标信息测量信道质量，并根据测得的信道质量确定CQI；
第一发送单元，用于向所述基站发送所述CQI。
可选的，所述第二接收单元，具体用于：
在PDCCH上接收所述基站发送的所述指示信息，所述第二接收单元在不同子帧的PDCCH上接收到的所述基站发送的所述指示信 息指示的资源号相同或不同。
其中，由于基站在PDCCH上发送的信息终端可以快速确定，因此，基站可以在每个子帧上发送指示信息，用于终端根据基站为该终端分配的资源号测量信道质量。
可选的，所述装置还包括第三确定单元、第二执行单元和第二发送单元；
所述第三确定单元，用于确定所述资源号的个数为第一Rank的值，所述第一Rank为所述基站为所述终端确定的初始Rank；
所述第二执行单元，用于根据所述目标信息和所述第一Rank测量第二Rank，并根据测得的所述第二Rank确定RI，所述RI对应的第二Rank小于等于所述第一Rank；
所述第二发送单元，用于向所述基站发送所述RI。
由于Rank与CQI之间相关性高，终端在重新反馈CQI之后，若基站仍然根据第一Rank向该终端发送数据，可能会使得该终端无法正确的解码该数据，因此，终端根据目标信息确定第二Rank，并向基站反馈RI，基站最终将第二Rank确定为终端对应的Rank，从而保证了终端可以正确的解码数据。
可选的，所述装置还包括第三接收单元，用于：
通过RRC信令接收所述基站发送的资源池，所述资源号为所述资源池中包括的R个资源的资源号，一个资源对应一个资源号，R为大于等于2的整数。
可选的，所述资源号为目标CSI-RS端口号、正交矩阵的行号或正交矩阵的列号，N个资源单位和一个长度为N的码的组合对应一个目标CSI-RS端口或1个资源单位对应一个目标CSI-RS端口，N为大于等于2的整数。
可选的，所述第二确定单元具体用于：
确定在所述终端的资源号对应的时频资源上接收到的信息；
采用所述终端的资源号对应的码对在所述终端的资源号对应的时频资源上接收到的信息进行解扩得到所述目标信息；
其中，当所述资源号为目标CSI-RS端口号时，所述资源号对应的码为所述目标CSI-RS端口对应的长度为N的码，当所述资源号为正交矩阵的行号时，所述资源号对应的码为该行号对应的行元素，当所述资源号为正交矩阵的列号时，所述资源号对应的码为该列号对应的列元素。
可选的，所述第一确定单元具体用于：
根据所述指示信息中包括的R个比特位确定所述终端的资源号，所述R个比特位中的第r个比特位用于指示所述R个资源中的第r个资源是否分配给所述终端，R为大于等于2的整数，r为大于等于1小于等于R的整数；或者，
根据所述指示信息中包括的3个比特位的值确定所述终端的资源号；或者，
根据所述指示信息中包括的4个比特位的值确定所述终端的资源号。
第五方面，提供一种测量CQI的装置，包括：存储器、处理器、发送器和接收器；
所述存储器用于存储代码，所述处理器根据所述代码执行以下动作：
确定终端的资源号对应的每个时频资源上的目标CSI-RS，所述目标CSI-RS为经过预编码后的CSI-RS，所述时频资源为用于传输 所述CSI-RS或所述目标CSI-RS的资源单位；
所述发送器，用于在所述资源号对应的每个时频资源上向所述终端发送该时频资源上的目标CSI-RS；
所述发送器，还用于向所述终端发送用于指示所述终端的资源号的指示信息；
所述接收器，用于接收所述终端发送的用于指示信道质量的CQI。
可选的，所述发送器具体用于：
在PDCCH上向所述终端发送所述指示信息，所述发送器在不同子帧的PDCCH上向所述终端发送的所述指示信息指示的资源号相同或不同。
其中，由于基站在PDCCH上发送的信息终端可以快速确定，因此，基站可以在每个子帧上发送指示信息，用于终端根据基站为该终端分配的资源号测量信道质量。
可选的，所述接收器，还用于接收所述终端发送的RI，所述RI为所述终端根据所述指示信息中指示的所述资源号对应的每个时频资源上接收到的信息测量第二Rank，并根据测量得到的第二Rank确定的RI；
所述处理器，还用于根据所述RI确定所述第二Rank；
所述处理器，还用于采用所述终端对应的预编码矩阵对向所述终端发送的数据流进行预编码；
所述发送器，还用于在数据端口上发送所述数据流，所述数据端口个数与所述第一Rank的数值相同，所述数据流的层数与所述第二Rank的数值相同，所述第二Rank小于等于所述第一Rank，所述 第一Rank为所述基站为所述终端确定的初始Rank。
由于Rank与CQI之间相关性高，终端在重新反馈CQI之后，若基站仍然根据第一Rank向该终端发送数据，可能会使得该终端无法正确的解码该数据，因此，终端根据目标信息确定第二Rank，并向基站反馈RI，基站最终将第二Rank确定为终端对应的Rank，从而保证了终端可以正确的解码数据。
可选的，所述发送器还用于：
通过RRC信令向所述终端发送所述资源池，所述资源号为资源池中包括的R个资源的资源号，一个资源对应一个资源号，R为大于等于2的整数。
可选的，所述资源号为目标CSI-RS端口号、正交矩阵的行号或正交矩阵的列号，N个资源单位和一个长度为N的码的组合对应一个目标CSI-RS端口或1个资源单位对应一个目标CSI-RS端口，N为大于等于2的整数。
可选的，所述处理器具体用于：
根据所述资源号、所述资源号对应的CSI-RS以及所述预编码矩阵确定所述资源号对应的每个时频资源上发送的目标CSI-RS。
可选的，所述处理器具体用于：
确定所述终端的第一Rank和预编码矩阵；
根据所述第一Rank为所述终端分配资源号，所述资源号的个数与所述第一Rank的数值相同；
采用所述资源号对应的码对所述资源号对应的CSI-RS扩频，并采用所述预编码矩阵对扩频后得到的每个CSI-RS进行预编码得到所述资源号对应的每个时频资源上发送的目标CSI-RS；
其中，当所述资源号为目标CSI-RS端口号时，所述资源号对应的码为所述目标CSI-RS端口对应的长度为N的码，当所述资源号为正交矩阵的行号时，所述资源号对应的码为该行号对应的行元素，当所述资源号为正交矩阵的列号时，所述资源号对应的码为该列号对应的列元素。
可选的，所述资源号为资源池中包括的R个资源的资源号，所述指示信息包括R个比特位，所述R个比特位中的第r个比特位用于指示所述R个资源中的第r个资源是否分配给所述终端，R为大于等于2的整数，r为大于等于1小于等于R的整数；或者，所述指示信息包括3个比特位，所述3个比特位的值不同时，所述指示信息中指示的资源号不同；或者，所述指示信息包括4个比特位，所述4个比特位的值不同时，所述指示信息中指示的资源号不同。
第六方面，提供一种测量CQI的装置，包括：接收器、存储器、处理器和发送器；
所述接收器，用于接收基站在各个时频资源上发送的信息；
所述接收器，还用于接收所述基站发送的用于向所述终端指示所述终端的资源号的指示信息；
所述存储器用于存储代码，所述处理器根据所述代码执行以下动作：
根据所述指示信息确定所述终端的资源号；
根据所述终端的资源号确定所述信息中的目标信息，所述目标信息为接收到的所述基站在所述终端的资源号对应的时频资源上向所述终端发送的信息，所述时频资源为用于传输CSI-RS或目标CSI-RS的资源单位，所述目标CSI-RS为经过预编码后的CSI-RS；
根据所述目标信息测量信道质量，并根据测得的信道质量确定 CQI；
所述发送器，用于向所述基站发送所述CQI。
可选的，所述接收器具体用于：
在PDCCH上接收所述基站发送的所述指示信息，所述接收器在不同子帧的PDCCH上接收到的所述基站发送的所述指示信息指示的资源号相同或不同。
其中，由于基站在PDCCH上发送的信息终端可以快速确定，因此，基站可以在每个子帧上发送指示信息，用于终端根据基站为该终端分配的资源号测量信道质量。
可选的，所述处理器，还用于确定所述资源号的个数为第一Rank的值，所述第一Rank为所述基站为所述终端确定的初始Rank；
所述处理器，还用于根据所述目标信息和所述第一Rank测量第二Rank，并根据测得的所述第二Rank确定RI，所述RI对应的第二Rank小于等于所述第一Rank；
所述发送器，还用于向所述基站发送所述RI。
由于Rank与CQI之间相关性高，终端在重新反馈CQI之后，若基站仍然根据第一Rank向该终端发送数据，可能会使得该终端无法正确的解码该数据，因此，终端根据目标信息确定第二Rank，并向基站反馈RI，基站最终将第二Rank确定为终端对应的Rank，从而保证了终端可以正确的解码数据。
可选的，所述接收器还用于：
通过RRC信令接收所述基站发送的所述资源池，所述资源号为资源池中包括的R个资源的资源号，一个资源对应一个资源号，R为大于等于2的整数。
可选的，所述资源号为目标CSI-RS端口号、正交矩阵的行号或正交矩阵的列号，N个资源单位和一个长度为N的码的组合对应一个目标CSI-RS端口或1个资源单位对应一个目标CSI-RS端口，N为大于等于2的整数。
可选的，所述处理器具体用于：
确定在所述终端的资源号对应的时频资源上接收到的信息；
采用所述终端的资源号对应的码对在所述终端的资源号对应的时频资源上接收到的信息进行解扩得到所述目标信息；
其中，当所述资源号为目标CSI-RS端口号时，所述资源号对应的码为所述目标CSI-RS端口对应的长度为N的码，当所述资源号为正交矩阵的行号时，所述资源号对应的码为该行号对应的行元素，当所述资源号为正交矩阵的列号时，所述资源号对应的码为该列号对应的列元素。
可选的，所述处理器具体用于：
根据所述指示信息中包括的R个比特位确定所述终端的资源号，所述R个比特位中的第r个比特位用于指示所述R个资源中的第r个资源是否分配给所述终端，R为大于等于2的整数，r为大于等于1小于等于R的整数；或者，
根据所述指示信息中包括的3个比特位的值确定所述终端的资源号；或者，
根据所述指示信息中包括的4个比特位的值确定所述终端的资源号。
本发明实施例提供的方法及装置，基站动态的向终端指示为该终端分配的资源号，终端接收到基站指示的资源号后，根据该资源号在各个时频资源上接收到的信息中确定目标信息，根据目标信息 测量CQI并向基站反馈，而不需要根据在每个时频资源上接收到的信息测量CQI后，将测量到的全部CQI向基站反馈，大大降低了终端的资源消耗。
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的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的一种测量CQI的方法的流程图；
图2为本发明实施例提供的一种PRB的组成示意图；
图3为本发明实施例提供的一种确定目标CSI-RS的方法的流程图；
图4为本发明实施例提供的一种测量CQI的装置的组成示意图；
图5为本发明实施例提供的又一种测量CQI的装置的组成示意图；
图6为本发明实施例提供的又一种测量CQI的装置的组成示意图；
图7为本发明实施例提供的又一种测量CQI的装置的组成示意图；
图8为本发明实施例提供的又一种测量CQI的装置的组成示意图；
图9为本发明实施例提供的又一种测量CQI的装置的组成示意 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做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。
为了使本领域技术人员能够更清楚地理解本发明实施例提供的技术方案，首先对与本申请相关的现有技术作简要说明。
在MIMO场景中，基站向多个终端中的每个终端发送该终端对应的CSI-RS，多个终端中的每个终端接收基站发送的CSI-RS，并基于SU-MIMO的假设根据该CSI-RS进行信道估计，将估计得到的PMI、初始RI(为了与下文中的RI作区分，此处称为初始RI)和初始CQI(为了与下文中的CQI作区分，此处称为初始CQI)向基站反馈，基站接收到多个终端发送的PMI、初始RI和初始CQI之后，基于MIMO系统的吞吐量最大或干扰程度最小为原则确定是否将多个终端中的N个终端组成MU-MIMO，若是，基站以消除或减小N个终端之间的干扰为原则，根据N个终端反馈的PMI、初始RI和初始CQI重新为N个终端中的每个终端确定该终端对应的预编码矩阵和Rank，该情况下，该Rank即下文中的第一Rank，本发明实施例提供的方法可以应用在该场景下，下文中也均以该方法应用在该场景下为例进行说明，然而需要说明的是，本发明实施例提供的方法也可以应用在其他场景中，例如，基站确定不组成MU-MIMO时，该方法还是可以应用在基站和终端之间。因此，本发明实施例中的终端可以为组成MU-MIMO的多个终端中的任意一个终端，也可以为其他终端。
本发明实施例提供的方法主要应用在LTE以及LTE-advanced系统，主要应用在下行MIMO场景。
本发明实施例提供一种测量CQI的方法，如图1所示，该方法包括：
101、基站确定终端的资源号对应的每个时频资源上的目标CSI-RS。
其中，所述目标CSI-RS为经过预编码后的CSI-RS，所述时频资源为用于传输所述CSI-RS或所述目标CSI-RS的资源单位。
具体的，目标CSI-RS可以为经过终端对应的预编码矩阵对资源号对应的CSI-RS进行预编码后的CSI-RS，终端对应的预编码矩阵可以由基站确定，资源号对应的CSI-RS可以为预设的CSI-RS，也可以为基站通过其他方式确定的CSI-RS，但是需要说明的是，该CSI-RS是基站与终端公知的。
可选的，所述资源号为目标CSI-RS端口号、正交矩阵的行号或正交矩阵的列号，N个资源单位和一个长度为N的码的组合对应一个目标CSI-RS端口或1个资源单位对应一个目标CSI-RS端口，N为大于等于2的整数。
目标CSI-RS端口号为目标CSI-RS端口的编号，目标CSI-RS端口的编号用于区分不同的目标CSI-RS端口。
其中，由于N个资源单位和一个长度为N的码的组合对应一个目标CSI-RS端口，因此，当资源号为目标CSI-RS端口号时，资源号既可以指示时域资源，也可以指示码域资源；当资源号为正交矩阵的行(或列)号时，基站可以为不同的资源号预设不同的时频资源，或者，不同的资源号对应的时频资源为相同的时域资源。
需要说明的是，如图2所示，LTE以及LTE-advanced系统的空 中接口资源分配的基本单位是物理资源块(Physical Resource Block，简称PRB)，1个PRB在频域上包括12个连续的子载波，在时域上包括7个连续的正交频分复用(Orthogonal Frequency Division Multiplexing，简称OFDM)符号周期，1个OFDM符号周期和一个子载波组成的资源称为1个资源单位(Resource Element，简称RE)，在一个PRB中包括的多个RE中，有些RE用于传输数据，有些RE用于传输参考信号，例如，图2中所示的资源单位1(下文中简称RE1)、资源单位2(下文中简称RE2)、资源单位3(下文中简称RE3)和资源单位4(下文中简称RE4)均用于传输参考信号。
资源号可以为目标CSI-RS端口号。比如在LTE和LTE Advance中，一个CSI-RS端口可以占用2个RE(或4个RE)，则资源号可以为长度为2(或4)的正交码和2个(或4个)RE的组合，目标CSI-RS端口同理。例如，基于图2所述的示例，若基站有4个目标CSI-RS端口，则编号为1的目标CSI-RS端口可以对应RE1和RE2，采用预定义的一组正交码中的编号为a1的正交码；编号为2的目标CSI-RS端口可以对应RE1和RE2，采用预定义的一组正交码中的编号为a2的正交码；编号为3的目标CSI-RS端口可以对应RE3和RE4，采用预定义的一组正交码中的编号为a1的正交码；编号为4的目标CSI-RS端口可以对应RE3和RE4，采用预定义的一组正交码中的编号为a2的正交码。
资源号还可以为正交矩阵的行(或列)号，当资源号为正交矩阵的行(或列)号，正交矩阵的任意两行(或列)元素正交。该情况下，正交矩阵的多行(或列)元素可以对应相同的时频资源，也可以对正交矩阵的某行(或列)元素对应的时频资源进行预设，基于图2所示，若正交矩阵的第一列包括4个元素，则正交矩阵的第一列对应的时频资源可以为RE1、RE2、RE3和RE4，正交矩阵的第 二列包括4个元素，且正交矩阵的第二列对应的时频资源同样为RE1、RE2、RE3和RE4。
另外，资源号可以为资源单位号、预定义的一组正交码中正交码的码号、预定义的正交矩阵的行号或列号，还可以为资源单位与预定义的一组正交码中正交码的码号和/或预定义的正交矩阵的行(或列)号的组合。
资源号还可以为资源单位号，例如，资源号可以为资源单位1、资源单位2、资源单位3和资源单位4中的一个或多个资源单位的资源单位号，资源单位号用于区别不同的资源单位。
资源号还可以为预定义的一组正交码中的正交码的码号，该情况下，一组正交码中的多个正交码可以对应相同的时频资源，也可以将具有某个码号的正交码对应的时频资源进行预设，基于图2所述的示例，若具有码号A的一个正交码包括4个元素，则具有码号A的正交码对应的时频资源可以为RE1、RE2、RE3和RE4，具有码号B的正交码包括4个元素，其对应的时频资源也可以为RE1、RE2、RE3和RE4。
需要说明的是，资源号对应的时频资源即资源号能够指示的时频资源，终端的资源号可以由基站根据资源池分配得到，终端和基站中均配置有该资源池。
可选的，所述资源号为资源池中包括的R个资源的资源号，一个资源对应一个资源号，R为大于等于2的整数，所述资源池为所述基站定义的资源池，基站可以通过无线资源控制(Radio Resource Control，简称RRC)信令向所述终端发送所述资源池，相应的，终端可以通过RRC信令接收该资源池。
具体的，基站在定义资源池之后，可以通过静态/半静态信令(例 如，RRC信令)向终端指示该资源池，基站在该资源池中的资源号对应的时频资源上不发送数据，终端在接收到该资源池之后，认为该资源池中的资源号被全部分配给一个或多个终端，以便终端确定干扰。
可选的，步骤101在具体实现时可以包括：所述基站根据所述资源号、所述资源号对应的CSI-RS以及所述预编码矩阵确定所述资源号对应的每个时频资源上发送的目标CSI-RS。
可选的，如图3所示，所述基站根据所述资源号、所述资源号对应的CSI-RS以及所述预编码矩阵确定所述资源号对应的每个时频资源上发送的目标CSI-RS的过程具体可以通过以下步骤301-303实现：
301、所述基站确定所述终端的第一Rank和预编码矩阵。
其中，当该终端为组成MU-MIMO的多个终端中的终端时，基站确定的组成MU-MIMO的多个终端中的每个终端对应的第一Rank和预编码矩阵能够使得该多个终端之间的干扰较小。
302、所述基站根据所述第一Rank为所述终端分配资源号，所述资源号的个数与所述第一Rank的数值相同。
303、所述基站采用所述资源号对应的码对所述资源号对应的CSI-RS扩频，并采用所述预编码矩阵对扩频后得到的每个CSI-RS进行预编码得到所述资源号对应的每个时频资源上发送的目标CSI-RS。
其中，当所述资源号为目标CSI-RS端口号时，所述资源号对应的码为所述目标CSI-RS端口对应的长度为N的码，当所述资源号为正交矩阵的行号时，所述资源号对应的码为该行号对应的行元素，当所述资源号为正交矩阵的列号时，所述资源号对应的码为该列号 对应的列元素。
具体的，基站在不同的PRB上传输的CSI-RS可以为CSI-RS序列中的不同的符号或相同的符号。
示例1，终端对应的第一Rank为1，则若基站为终端分配的目标CSI-RS端口号为1，基于图2所述的示例，目标CSI-RS端口1对应2个资源单位，2个资源单位为RE1和RE2，则目标CSI-RS端口1也对应一个长度为2的码，则采用该长度为2的码对资源号对应的CSI-RS进行扩频之后，RE1上的CSI-RS为CSI-RS1，RE2上的CSI-RS为CSI-RS2，则若基站共有2个天线端口、且该终端对应的预编码矩阵为
Figure PCTCN2016076116-appb-000001
则可以将预编码矩阵与RE1上的参考信号CSI-RS1分别相乘(相乘后的结果即RE1上的目标CSI-RS)，基站通过天线端口1和天线端口2在RE1上传输相乘后的结果；将预编码矩阵与RE2上的参考信号CSI-RS2分别相乘(相乘后的结果即RE2上的目标CSI-RS)，基站通过天线端口1和天线端口2在RE2上传输相乘后的结果。由于CSI-RS1和CSI-RS2均是根据CSI-RS扩频后得到的，因此，CSI-RS1和CSI-RS2实质上是CSI-RS的不同形式，由此可知，目标CSI-RS即资源号对应的CSI-RS与预编码矩阵相乘的结果，基站在RE1上发送的数据和在RE2上发送的数据实质上是目标CSI-RS的不同形式。
其中，为了便于对全文进行理解，示例1仅仅示例性的示出了一种资源号为目标CSI-RS端口号时确定资源号对应的目标CSI-RS的过程，当资源号为正交矩阵的行号或列号时，可以采用现有技术中的相关方法确定目标CSI-RS。
102、所述基站在所述资源号对应的每个时频资源上向所述终端发送该时频资源上的目标CSI-RS。
具体的，基于示例1，若基站有两个天线端口，基站的天线端 口1在RE1上发送H1·CSI-RS1，在RE2上发送H1·CSI-RS2，基站的天线端口2在RE1上发送H2·CSI-RS1，在RE2上发送H2·CSI-RS2。
103、所述基站向所述终端发送指示信息，所述指示信息用于向所述终端指示所述资源号。
可选的，步骤103在具体实现时，包括：所述基站在物理下行控制信道(Physical Downlink Control Channel，简称PDCCH)上向所述终端发送所述指示信息，所述基站在不同子帧的PDCCH上向所述终端发送的所述指示信息指示的资源号相同或不同。
其中，由于基站在PDCCH上发送的信息终端可以快速确定，因此，基站可以在每个子帧上发送指示信息，用于终端根据基站为该终端分配的资源号测量信道质量。
104、终端接收基站在各个时频资源上发送的信息。
105、所述终端接收所述基站发送的指示信息。
可选的，步骤105在具体实现时，包括：所述终端在PDCCH上接收所述基站发送的所述指示信息，所述终端在不同子帧的PDCCH上接收到的所述基站发送的所述指示信息指示的资源号相同或不同。
106、所述终端根据所述指示信息确定所述终端的资源号。
107、所述终端根据所述终端的资源号确定所述信息中的目标信息，所述目标信息为接收到的所述基站在所述终端的资源号对应的时频资源上向所述终端发送的信息。
具体的，基于示例1，目标信息包括在RE1上接收到的信息和在RE2上接收到的信息，其中，在RE1上接收到的信息为被信道污染过的H1·CSI-RS1和H2·CSI-RS1的叠加，在RE2上接收到的信息为被信道污染过的H1·CSI-RS2和H2·CSI-RS2的叠加。
可选的，步骤107在具体实现时，包括：所述终端确定在所述终端的资源号对应的时频资源上接收到的信息；所述终端采用所述终端的资源号对应的码对在所述终端的资源号对应的时频资源上接收到的信息进行解扩得到所述目标信息。
其中，有关资源号对应的码的描述可参见上文。
需要说明的是，由于基站在确定在终端的资源号对应的每个时频资源上发送的目标CSI-RS的过程中，对终端的资源号对应的CSI-RS进行了扩频，因此，终端在接收到终端的资源号对应的时频资源上的信息之后，需要对该信息进行解扩得到目标信息。
108、所述终端根据所述目标信息测量信道质量，并根据测得的信道质量确定CQI。
终端根据目标信息测量CQI的过程中，需要确定干扰，具体的，终端可以在各个时频资源上发送的信息中减去目标信息，将剩余的信息认为是MU-MIMO中除自身之外的其他终端和邻小区用户干扰的总和。
109、所述终端向所述基站发送所述CQI。
110、所述基站接收所述终端发送的CQI。
其中，CQI用于指示信道质量。
本发明实施例提供的方法，基站动态的向终端指示为该终端分配的资源号，终端接收到基站指示的资源号后，根据该资源号在各个时频资源上接收到的信息中确定目标信息，根据目标信息测量CQI并向基站反馈，而不需要根据在每个时频资源上接收到的信息测量CQI后，将测量到的全部CQI向基站反馈，大大降低了终端的资源消耗。
可选的，在步骤110之后，所述方法还包括：
11)基站根据CQI确定终端对应的调制编码策略，并向终端发送调制编码策略，终端接收基站发送的调制编码策略；
12)终端根据调制编码策略确定用于对基站发送的数据进行解调解码的解调解码策略。
具体的，根据CQI确定调制编码策略的方法可以参见现有技术。
其中，基站向终端发送的调制编码策略可以通过控制信令发送，基站发送的数据为经过该调制编码策略调制编码后的数据。
可选的，所述基站在PDCCH上向所述终端发送所述指示信息，包括：所述基站向所述终端发送上行调度指示信息，所述上行调度指示信息包括所述指示信息；或者，所述基站向所述终端发送下行调度指示信息，所述下行调度指示信息包括所述指示信息。
相应的，所述终端在PDCCH上接收所述基站发送的所述指示信息，包括：所述终端接收所述基站发送的上行调度指示信息，所述上行调度指示信息包括所述指示信息；或者，所述终端接收所述基站发送的下行调度指示信息，所述下行调度指示信息包括所述指示信息。
可选的，当下行调度指示信息包括指示信息时，该方法还包括：
21)所述基站在第M个子帧上向所述终端发送所述指示信息、所述目标CSI-RS以及下行数据资源分配方式，用于所述终端测量所述基站在第M+K个子帧上发送的数据的信道质量，M、K均为大于等于1的整数；
22)所述基站在第M+K个子帧上向所述终端发送所述终端对应的调制编码策略，所述基站在第M个子帧上为所述目标CSI-RS分配的物理资源块PRB的个数和位置与所述基站在第M+K个子帧上发送的数据信道所占的PRB的个数和位置相同；
23)所述终端根据接收到的所述基站发送的第M个子帧测量所述基站在第M+K个子帧上发送的数据的信道质量。
该可选的方法，使得目标CSI-RS的带宽和数据的带宽是一致的，UE可以在相应的带宽内测量目标CSI-RS和反馈CQI，从而减小了上行反馈的资源消耗。
现有技术中的下行调度指示信息中将数据资源分配方式和调制编码策略在控制信道中一起下发。在本发明实施例中，当基站将指示信息承载在下行调度指示信息中时，基站根据为一个终端分配的资源号可以确定向该终端发送参考信号的时频资源位置，而调制编码策略需要根据CQI确定。因此，可以在一个子帧中的PDCCH上向该终端发送数据资源分配方式和指示信息，待确定该终端的调制编码策略后，在另一个子帧的PDCCH上向该终端发送调制编码策略。
可选的，所述方法还包括：所述基站向所述终端发送触发信息，所述触发信息用于触发所述终端根据在所述指示信息中指示的所述资源号对应的每个时频资源上接收到的信息测量信道质量和/或第二Rank，所述终端接收所述基站发送的触发信息；所述终端根据所述触发信息确定测量信道质量和/或第二Rank。关于第二Rank的描述可参见下文。
需要说明的是，指示信息和触发信息也可以指示信息(或触发信息)包含在上行调度指示信息中，触发信息(或指示信息)包含在下行调度指示信息中。当然，指示信息和触发信息也可以包含在同一消息中。
可选的，所述资源号为资源池中包括的R个资源的资源号，所述指示信息包括R个比特位，所述R个比特位中的第r个比特位用于指示所述R个资源中的第r个资源是否分配给所述终端，R为大 于等于2的整数，r为大于等于1小于等于R的整数；或者，所述指示信息包括3个比特位，所述3个比特位的值不同时，所述指示信息中指示的资源号不同；或者，所述指示信息包括4个比特位，所述4个比特位的值不同时，所述指示信息中指示的资源号不同。
可选的，资源号为资源池中包括的R个资源的资源号，步骤106在具体实现时包括：
所述终端根据所述指示信息中包括的R个比特位确定所述终端的资源号，所述R个比特位中的第r个比特位用于指示所述R个资源中的第r个资源是否分配给所述终端，R为大于等于2的整数，r为大于等于1小于等于R的整数；或者，所述终端根据所述指示信息中包括的3个比特位的值确定所述终端的资源号；或者，所述终端根据所述指示信息中包括的4个比特位的值确定所述终端的资源号。
示例性的，若基站有4个目标CSI-RS端口时，可以通过4个比特位的值指示这4个目标CSI-RS端口，比特位i(i为大于等于0小于等于3的整数)指示第i个目标CSI-RS端口，则0001代表目标CSI-RS端口0，0010代表目标CSI-RS端口1，1010代表目标CSI-RS端口3和目标CSI-RS端口1，若终端确定指示信息中包括的4个比特位为0101，则终端确定该终端的资源号为目标CSI-RS端口0和目标CSI-RS端口2。
需要说明的是，在该示例中，比特位的值为1时表示基站将该比特位对应的资源分配给终端，在实际实现时，也可以比特位的值为0时表示基站将该比特位对应的资源分配给终端。另外，也可以R个比特位中的一个比特位用于指示R个资源中的一个资源是否分配给终端，具体哪个比特位用于指示哪个资源可以由基站(或基站和终端)确定。
示例性的，若基站有4个目标CSI-RS端口时，可以通过3个比特位的值指示这4个目标CSI-RS端口，3个比特位的值不同时，对应的目标CSI-RS端口号不同，具体的对应关系可参见表1，其中，表1中的资源号一栏的0、1、2和3即4个目标CSI-RS端口的端口号，一个端口号对应一个目标CSI-RS端口。
表1
3个比特位的值 资源号
0 0
1 1
2 2
3 3
4 0和1
5 2和3
6 0、1和2
7 0、1、2和3
示例性的，若基站有8个目标CSI-RS端口时，可以通过4个比特位的值指示这8个目标CSI-RS端口，其中4个比特位的值不同时，对应的目标CSI-RS端口号不同，具体的对应关系可参见表2，其中，表2中的资源号一栏的0-7的数字即8个目标CSI-RS端口的端口号，一个端口号对应一个目标CSI-RS端口。
表2
4个比特位的值 资源号
0 0
1 1
2 2
3 3
4 0和1
5 2和3
6 4和5
7 6和7
8 0、1和2
9 3、4和5
10 0、1、2和3
11 4、5、6和7
12 0、1、2、3和4
13 0、1、2、3、4和5
14 0、1、2、3、4、5和6
15 0、1、2、3、4、5、6和7
可选的，该方法还包括：
31)所述终端确定所述资源号的个数为第一Rank的值，所述第一Rank为所述基站为所述终端确定的初始Rank；
32)所述终端根据所述目标信息和所述第一Rank测量第二Rank，并根据测得的所述第二Rank确定RI，所述RI对应的第二Rank小于等于所述第一Rank；
33)所述终端向所述基站发送所述RI；
34)所述基站接收所述终端发送的RI；
35)所述基站根据所述RI确定所述第二Rank；
36)所述基站采用所述终端对应的预编码矩阵对向所述终端发送的数据流进行预编码，并在数据端口上发送所述数据流，所述数据端口个数与所述第一Rank的数值相同，所述数据流的层数与所述第二Rank的数值相同，所述第二Rank小于等于所述第一Rank。
其中，数据端口是指在天线端口上加预编码矩阵后的端口，数据端口用于发送数据，针对同一终端来说，该终端的目标CSI-RS端口采用的预编码矩阵与该天线端口上加的预编码矩阵为同一预编码矩阵。
在上述方法中，若终端为组成MU-MIMO终端中的多个终端中的终端时，由于基站确定将多个终端组成MU-MIMO后，为每个终端重新确定了预编码矩阵，从而使得终端在组成MU-MIMO前上报的CQI不准确，因此，终端需要让每个终端重新反馈CQI，而由于Rank与CQI之间相关性高，CQI变化之后，若基站仍然根据第一Rank向该终端发送数据，可能会使得该终端无法正确的解码该数据，因此，本发明实施例中，还使得终端根据目标信息确定第二Rank，并向基站反馈RI，基站最终将第二Rank确定为终端对应的Rank，从而保证了终端可以正确的解码该数据，然而，基站在向终端发送数据流时，仍然采用个数与第一Rank的数值相同的数据端口发送数据，并且数据端口采用的预编码矩阵与目标CSI-RS端口采用的预编码矩阵相同，这样可以保证多个终端之间的干扰的稳定性。
具体的，终端可以根据指示信息中指示的资源号的个数确定第一RI，资源号的个数为多少，第一RI的数值即为多少。
该情况下，终端根据目标信息测量第二Rank时，当第一Rank的值为1(也就是指示信息中指示的资源号个数为1)时，由于终端对应的Rank最小为1，因此，终端在接收到指示信息之后，终端可以根据目标信息只确定CQI，不重新确定第二Rank；当第一Rank的值大于1(也就是指示信息中指示的资源号个数大于1)时，终端在接收到指示信息之后，可以以第一Rank的值为上限，依次确定Rank为不同的值(Rank的取值为大于等于1的整数)时的CQI，最终选择能够使得吞吐率最大时的Rank作为第二Rank，将第二Rank 对应的RI和CQI向基站反馈。
以下在多种场景下，对终端确定RI对应的第二Rank及CQI的方法作简要说明：
场景1：基站给终端分配的资源号个数为2，则终端分别计算Rank＝2和Rank＝1时的CQI，终端比较Rank＝2时和Rank＝1时所测得的吞吐率，将吞吐率最大的Rank(即第二Rank)，以及该Rank所对应的RI和CQI上报给基站。
计算Rank＝2时的CQI时，假设基站的每个数据端口传输一个数据流，两个数据端口传输的数据分别为：
Figure PCTCN2016076116-appb-000002
终端基于该假设计算每个数据流对应的CQI，其中，x(0)(i)表示第1个数据流中的第i个数据符号，x(1)(i)表示第2个数据流中的第i个数据符号，y(0)(k)表示第1个数据端口发送的第k个数据符号，y(1)(k)表示第2个数据端口发送的第k个数据符号，i、k均为大于等于0的整数。
终端计算Rank＝1时的CQI时，终端根据LTE系统中定义的发射分集方式发送数据，即假设基站为该终端分配1个数据流，两个数据端口传输的数据分别为：
Figure PCTCN2016076116-appb-000003
终端基于该假设计算该数据流对应的CQI，其中，x(p)表示该数据流中的第P个数据符号，P等于2i或2i+1，y(0)(q)表示第1个数据端口发送的第q个数据符号，y(1)(q)表示第2个数据端口发送的第q 个数据符号，q等于2k或2k+1，i、k均为大于等于0的整数。
终端计算Rank＝1时的CQI时，还可以假设数据流在两个数据端口上轮流发送，即：
Figure PCTCN2016076116-appb-000004
终端基于该假设计算该数据流对应的CQI，其中，x(p)表示该数据流中的第P个数据符号，P等于2i或2i+1，y(0)(q)表示第1个数据端口发送的第q个数据符号，y(1)(q)表示第2个数据端口发送的第q个数据符号，q等于2k或2k+1，i、k均为大于等于0的整数。
场景2：基站给终端分配的资源号个数为3，则终端分别计算Rank＝3、Rank＝2和Rank＝1时的CQI，终端比较Rank＝3、Rank＝2和Rank＝1所测得的吞吐率，将吞吐率最大的Rank(即第二Rank)，以及该Rank所对应的RI和CQI上报给基站。
终端计算Rank＝3时的CQI时，假设基站为终端分配了两个数据流，其中第1个数据流分别在第1个数据端口和第2个数据端口上传输，第2个数据流在第3个数据端口上传输，则基站在每个数据端口上发送的数据为：
Figure PCTCN2016076116-appb-000005
终端基于该假设计算每个数据流对应的CQI，其中，x(0)(2i)表示第1个数据流中的第2i个数据符号，x(1)(i)表示第2个数据流中的第i个数据符号，x(0)(2i+1)表示第1个数据流中的第2i+1个数据符号；y(p)(k)表示第p+1个数据端口发送的第k个数据符号，P为0、1或2，i、k均为大于等于0的整数。
终端计算Rank＝2时的CQI时，假设基站为终端分配了两个数据流，第1个数据流在第1个数据端口上传输，第2个数据流和第3个数据流在第2个数据端口和第3个数据端口上轮流传输，则基站在3个数据端口上发送的第2k(k为大于等于1的整数)个数据符号为：
Figure PCTCN2016076116-appb-000006
基站在3个数据端口上发送的第2k+1个数据符号为：
Figure PCTCN2016076116-appb-000007
终端基于该假设计算两个数据流对应的CQI，其中，x(p)(2i)表示第p+1个数据流中的第2i个数据符号，x(p)(2i+1)表示第p+1个数据流中的第2i+1个数据符号，p为0或1；y(q)(2k)表示第q+1个数据端口发送的第2k个数据符号，y(q)(2k+1)表示第q+1个数据端口发送的第2k+1个数据符号，q为0、1或2，i为大于等于0的整数。
终端计算Rank＝1时的CQI时，假设基站为终端分配了一个数据流，该数据流在3个数据端口上轮流发送，则基站在每个数据端口上发送的数据为：
y(0)(3k)＝x(3i)，y(1)(3k)＝0，y(2)(3k)＝0
y(0)(3k+1)＝0，y(1)(3k+1)＝x(3i+1)，y(2)(3k+1)＝0
y(0)(3k+2)＝0，y(1)(3k+2)＝0，y(2)(3k+1)＝x(3i+2)
终端基于该假设计算该数据流对应的CQI，其中，x(p)表示该数据流中的第p个数据符号，p为3i、3i+1或3i+2；y(0)(q)表示第1个数据端口发送的第q个数据符号，y(1)(q)表示第2个数据端口发送的第q个数据符号，y(2)(q)表示第3个数据端口发送的第q个数据符号， q为3k、3k+1或3k+2，i、k均为大于等于0的整数。
场景3：基站给终端分配的资源号个数为4，则终端分别计算Rank＝4、Rank＝3、Rank＝2和Rank＝1对应的CQI，终端比较Rank＝4，Rank＝3，Rank＝2和Rank＝1所测得的吞吐率，将吞吐率最大的Rank(即第二Rank)，以及该Rank所对应的RI和CQI上报给基站。
终端计算Rank＝4时的CQI时，假设基站为终端分配了两个数据流，其中第1个数据流分别在第1个数据端口和第2个数据端口上传输，第2个数据流在第3个数据端口和第4个数据端口上传输，则基站在每个数据端口上发送的数据为：
Figure PCTCN2016076116-appb-000008
终端基于该假设计算2个数据流对应的CQI，其中，x(0)(p)表示第1个数据流中的第p个数据符号，x(1)(p)表示第2个数据流中的第p个数据符号，p为2i或2i+1；y(q)(k)表示第q+1个数据端口发送的第k个数据符号，q为0、1、2或3，i、k均为大于等于0的整数。
终端计算Rank＝3时的CQI时，假设基站为终端分配了两个数据流，第1个数据流分别在第1个数据端口和第2个数据端口传输，则基站在第1个数据端口和第2个数据端口发送的数据为：
Figure PCTCN2016076116-appb-000009
第2个数据流在第3个数据端口和第4个数据端口传输，则基站第3个数据端口和第4个数据端口发送的数据为：
Figure PCTCN2016076116-appb-000010
终端基于该假设计算2个数据流对应的CQI，其中，x(0)(p)表示第1个数据流中的第p个数据符号，x(1)(p)表示第2个数据流中的第p个数据符号，p为2i或2i+1；y(q)(2k)表示第q+1个数据端口发送的第2k个数据符号，y(2)(2k+1)表示第3个数据端口发送的第2k+1个数据符号，y(3)(2k+1)表示第4个数据端口发送的第2k+1个数据符号，q为0、1、2或3，i、k均为大于等于0的整数。
终端计算Rank＝2时的CQI时，假设基站为终端分配了两个数据流，第1个数据流分别在第1个数据端口和第2个数据端口轮流传输，则基站在第1个数据端口和第2个数据端口发送的数据为：
Figure PCTCN2016076116-appb-000011
第2个数据流分别在第3个数据端口和第4个数据端口轮流传输，则基站在第3个数据端口和第4个数据端口发送的数据为：
Figure PCTCN2016076116-appb-000012
终端基于该假设计算2个数据流对应的CQI，其中，x(0)(p)表示第1个数据流中的第p个数据符号，x(1)(p)表示第2个数据流中的第p个数据符号，p为2i或2i+1；y(q)(2k)表示第q+1个数据端口发送的第2k个数据符号，y(q)(2k+1)表示第q+1个数据端口发送的第2k+1 个数据符号，q为0、1、2或3，i、k均为大于等于0的整数。
终端计算Rank＝1时的CQI时，假设基站为其分配了1个数据流，并且采用了4数据端口发射分集的方式传输该数据流，则基站在4个数据端口上发送的数据为：
Figure PCTCN2016076116-appb-000013
终端基于该假设计算该数据流对应的CQI，其中，x(p)表示该数据流中的第p个数据符号，p为4i、4i+1、4i+2或4i+3；y(0)(q)表示第1个数据端口发送的第q个数据符号，y(1)(q)表示第2个数据端口发送的第q个数据符号，y(2)(q)表示第3个数据端口发送的第q个数据符号，y(3)(q)表示第4个数据端口发送的第q个数据符号，q为4k、4k+1、4k+2或4k+3，i、k均为大于等于0的整数。
终端计算Rank＝1时的CQI时，也可以假设基站轮流使用4个数据端口发送该数据流，则基站在该4个数据端口上发送的数据为：
y(0)(4k)＝x(4i)，y(1)(4k)＝0，y(2)(4k)＝0，y(3)(4k)＝0
y(0)(4k+1)＝0，y(1)(4k+1)＝x(4i+1)，y(2)(4k+1)＝0，y(3)(4k+1)＝0
y(0)(4k+2)＝0，y(1)(4k+2)＝0，y(2)(4k+2)＝x(4i+2)，y(3)(4k+2)＝0
y(0)(4k+3)＝0，y(1)(4k+3)＝0，y(2)(4k+3)＝0，y(3)(4k+3)＝x(4i+3)
终端基于该假设计算该数据流对应的CQI，其中，x(p)表示该数据流中的第p个数据符号，p为4i、4i+1、4i+2或4i+3；y(0)(q)表示第1个数据端口发送的第q个数据符号，y(1)(q)表示第2个数据端口发送的第q个数据符号，y(2)(q)表示第3个数据端口发送的第q个数据符号q，y(3)(q)表示第4个数据端口发送的第q个数据符号，q为4k、4k+1、4k+2或4k+3，i、k均为大于等于0的整数。
本发明实施例还提供了一种测量CQI的装置40，如图4所示，包括：
第一确定单元401，用于确定终端的资源号对应的每个时频资源上的目标CSI-RS，所述目标CSI-RS为经过预编码后的CSI-RS，所述时频资源为用于传输所述CSI-RS或所述目标CSI-RS的资源单位；
第一发送单元402，用于在所述资源号对应的每个时频资源上向所述终端发送该时频资源上的目标CSI-RS；
第二发送单元403，用于向所述终端发送指示信息，所述指示信息用于向所述终端指示所述资源号；
第一接收单元404，用于接收所述终端发送的CQI，所述CQI用于指示信道质量。
可选的，所述第二发送单元403具体用于：
在PDCCH上向所述终端发送所述指示信息，所述第二发送单元403在不同子帧的PDCCH上向所述终端发送的所述指示信息指示的资源号相同或不同。
可选的，如图5所示，所述装置40还包括第二接收单元405、第二确定单元406、预编码单元407和第三发送单元408；
所述第二接收单元405，用于接收所述终端发送的RI，所述RI为所述终端根据所述指示信息中指示的所述资源号对应的每个时频资源上接收到的信息测量第二Rank，并根据测量得到的第二Rank确定的RI；
所述第二确定单元406，用于根据所述RI确定所述第二Rank；
所述预编码单元407，用于采用所述终端对应的预编码矩阵对向所述终端发送的数据流进行预编码；
所述第三发送单元408，用于在数据端口上发送所述数据流，所述数据端口个数与所述第一Rank的数值相同，所述数据流的层数与所述第二Rank的数值相同，所述第二Rank小于等于所述第一Rank，所述第一Rank为所述基站为所述终端确定的初始Rank。
可选的，如图5所示，所述装置40还包括第四发送单元409；
所述第四发送单元409，用于通过RRC信令向所述终端发送所述资源池，所述资源号为资源池中包括的R个资源的资源号，一个资源对应一个资源号，R为大于等于2的整数。
可选的，所述资源号为目标CSI-RS端口号、正交矩阵的行号或正交矩阵的列号，N个资源单位和一个长度为N的码的组合对应一个目标CSI-RS端口或1个资源单位对应一个目标CSI-RS端口，N为大于等于2的整数。
可选的，所述第一确定单元401具体用于：
根据所述资源号、所述资源号对应的CSI-RS以及所述预编码矩阵确定所述资源号对应的每个时频资源上发送的目标CSI-RS。
可选的，所述第一确定单元401具体用于：
确定所述终端的第一Rank和预编码矩阵；
根据所述第一Rank为所述终端分配资源号，所述资源号的个数与所述第一Rank的数值相同；
采用所述资源号对应的码对所述资源号对应的CSI-RS扩频，并采用所述预编码矩阵对扩频后得到的每个CSI-RS进行预编码得到所述资源号对应的每个时频资源上发送的目标CSI-RS；
其中，当所述资源号为目标CSI-RS端口号时，所述资源号对应的码为所述目标CSI-RS端口对应的长度为N的码，当所述资源号为正交矩阵的行号时，所述资源号对应的码为该行号对应的行元素，当所述资源号为正交矩阵的列号时，所述资源号对应的码为该列号对应的列元素。
可选的，所述资源号为资源池中包括的R个资源的资源号，所述指示信息包括R个比特位，所述R个比特位中的第r个比特位用于指示所述R个资源中的第r个资源是否分配给所述终端，R为大于等于2的整数，r为大于等于1小于等于R的整数；或者，所述指示信息包括3个比特位，所述3个比特位的值不同时，所述指示信息中指示的资源号不同；或者，所述指示信息包括4个比特位，所述4个比特位的值不同时，所述指示信息中指示的资源号不同。
可选的，所述装置40还包括第五发送单元410；
所述第五发送单元410，用于向所述终端发送触发信息，所述触发信息用于触发所述终端根据在所述指示信息中指示的所述资源号对应的每个时频资源上接收到的信息测量信道质量和/或第二Rank。
可选的，所述第二发送单元403具体用于：
向所述终端发送上行调度指示信息，所述上行调度指示信息包括所述指示信息；或者，
向所述终端发送下行调度指示信息，所述下行调度指示信息包 括所述指示信息。
可选的，如图5所示，所述装置40还包括第六发送单元411，用于：
在第M个子帧上向所述终端发送所述指示信息、所述目标CSI-RS以及下行数据资源分配方式，用于所述终端测量所述基站在第M+K个子帧上发送的数据的信道质量，M、K均为大于等于1的整数；
在第M+K个子帧上向所述终端发送所述终端对应的调制编码策略，所述基站在第M个子帧上为所述目标CSI-RS分配的PRB的个数和位置与所述基站在第M+K个子帧上发送的数据信道所占的PRB的个数和位置相同。
本发明实施例提供的装置，可以动态的向终端指示为该终端分配的资源号，终端接收到基站指示的资源号后，根据该资源号在各个时频资源上接收到的信息中确定目标信息，根据目标信息测量CQI并向基站反馈，而不需要根据在每个时频资源上接收到的信息测量CQI后，将测量到的全部CQI向基站反馈，大大降低了终端的资源消耗。
在硬件实现上，测量CQI的装置40中的各个单元可以以硬件形式内嵌于或独立于测量CQI的装置40的处理器中，也可以以软件形式存储于测量CQI的装置40的存储器中，以便于处理器调用执行以上各个单元对应的操作，该处理器可以为中央处理器(Central Processing Unit，简称CPU)、特定集成电路(Application Specific Integrated Circuit，简称ASIC)或者是被配置成实施本发明实施例的一个或多个集成电路。
本发明实施例还提供了一种测量CQI的装置60，如图6所示，包括：存储器601、处理器602、发送器603和接收器604；
其中，存储器601、处理器602、发送器603和接收器604之间是通过总线系统605耦合在一起的，其中存储器601可能包含随机存取存储器，也可能还包括非易失性存储器，例如至少一个磁盘存储器。总线系统605，可以是工业标准体系结构(Industry Standard Architecture，简称ISA)总线、外部设备互连(Peripheral Component，简称PCI)总线或扩展工业标准体系结构(Extended Industry Standard Architecture，简称EISA)总线等。该总线系统605可以分为地址总线、数据总线、控制总线等。为便于表示，图6中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
所述存储器601用于存储代码，所述处理器602根据所述代码执行以下动作：
确定终端的资源号对应的每个时频资源上的目标CSI-RS，所述目标CSI-RS为经过预编码后的CSI-RS，所述时频资源为用于传输所述CSI-RS或所述目标CSI-RS的资源单位；
所述发送器603，用于在所述资源号对应的每个时频资源上向所述终端发送该时频资源上的目标CSI-RS；
所述发送器603，还用于向所述终端发送指示信息，所述指示信息用于向所述终端指示所述资源号；
所述接收器604，用于接收所述终端发送的CQI，所述CQI用于指示信道质量。
可选的，所述发送器603具体用于：
在PDCCH上向所述终端发送所述指示信息，所述发送器603在不同子帧的PDCCH上向所述终端发送的所述指示信息指示的资 源号相同或不同。
可选的，所述接收器604，还用于接收所述终端发送的RI，所述RI为所述终端根据所述指示信息中指示的所述资源号对应的每个时频资源上接收到的信息测量第二Rank，并根据测量得到的第二Rank确定的RI；
所述处理器602，还用于根据所述RI确定所述第二Rank；
所述处理器602，还用于采用所述终端对应的预编码矩阵对向所述终端发送的数据流进行预编码；
所述发送器603，还用于在数据端口上发送所述数据流，所述数据端口个数与所述第一Rank的数值相同，所述数据流的层数与所述第二Rank的数值相同，所述第二Rank小于等于所述第一Rank，所述第一Rank为所述基站为所述终端确定的初始Rank。
可选的，所述发送器603还用于：
通过RRC信令向所述终端发送所述资源池，所述资源号为资源池中包括的R个资源的资源号，一个资源对应一个资源号，R为大于等于2的整数。
可选的，所述资源号为目标CSI-RS端口号、正交矩阵的行号或正交矩阵的列号，N个资源单位和一个长度为N的码的组合对应一个目标CSI-RS端口或1个资源单位对应一个目标CSI-RS端口，N为大于等于2的整数。
可选的，所述处理器602具体用于：
根据所述资源号、所述资源号对应的CSI-RS以及所述预编码矩阵确定所述资源号对应的每个时频资源上发送的目标CSI-RS。
可选的，所述处理器602具体用于：
确定所述终端的第一Rank和预编码矩阵；
根据所述第一Rank为所述终端分配资源号，所述资源号的个数与所述第一Rank的数值相同；
采用所述资源号对应的码对所述资源号对应的CSI-RS扩频，并采用所述预编码矩阵对扩频后得到的每个CSI-RS进行预编码得到所述资源号对应的每个时频资源上发送的目标CSI-RS；
其中，当所述资源号为目标CSI-RS端口号时，所述资源号对应的码为所述目标CSI-RS端口对应的长度为N的码，当所述资源号为正交矩阵的行号时，所述资源号对应的码为该行号对应的行元素，当所述资源号为正交矩阵的列号时，所述资源号对应的码为该列号对应的列元素。
可选的，所述资源号为资源池中包括的R个资源的资源号，所述指示信息包括R个比特位，所述R个比特位中的第r个比特位用于指示所述R个资源中的第r个资源是否分配给所述终端，R为大于等于2的整数，r为大于等于1小于等于R的整数；或者，所述指示信息包括3个比特位，所述3个比特位的值不同时，所述指示信息中指示的资源号不同；或者，所述指示信息包括4个比特位，所述4个比特位的值不同时，所述指示信息中指示的资源号不同。
可选的，所述发送器603还用于：
向所述终端发送触发信息，所述触发信息用于触发所述终端根据在所述指示信息中指示的所述资源号对应的每个时频资源上接收到的信息测量信道质量和/或第二Rank。
可选的，所述发送器603具体用于：
向所述终端发送上行调度指示信息，所述上行调度指示信息包括所述指示信息；或者，
向所述终端发送下行调度指示信息，所述下行调度指示信息包括所述指示信息。
可选的，所述发送器603还用于：
在第M个子帧上向所述终端发送所述指示信息、所述目标CSI-RS以及下行数据资源分配方式，用于所述终端测量所述基站在第M+K个子帧上发送的数据的信道质量，M、K均为大于等于1的整数；
在第M+K个子帧上向所述终端发送所述终端对应的调制编码策略，所述基站在第M个子帧上为所述目标CSI-RS分配的PRB的个数和位置与所述基站在第M+K个子帧上发送的数据信道所占的PRB的个数和位置相同。
本发明实施例提供的装置，可以动态的向终端指示为该终端分配的资源号，终端接收到基站指示的资源号后，根据该资源号在各个时频资源上接收到的信息中确定目标信息，根据目标信息测量CQI并向基站反馈，而不需要根据在每个时频资源上接收到的信息测量CQI后，将测量到的全部CQI向基站反馈，大大降低了终端的资源消耗。
本发明实施例还提供了一种测量CQI的装置70，如图7所示，包括：
第一接收单元701，用于接收基站在各个时频资源上发送的信息；
第二接收单元702，用于接收所述基站发送的指示信息，所述指示信息用于向所述终端指示所述终端的资源号；
第一确定单元703，用于根据所述指示信息确定所述终端的资源 号；
第二确定单元704，用于根据所述终端的资源号确定所述信息中的目标信息，所述目标信息为接收到的所述基站在所述终端的资源号对应的时频资源上向所述终端发送的信息，所述时频资源为用于传输CSI-RS或目标CSI-RS的资源单位，所述目标CSI-RS为经过预编码后的CSI-RS；
第一执行单元705，用于根据所述目标信息测量信道质量，并根据测得的信道质量确定CQI；
第一发送单元706，用于向所述基站发送所述CQI。
可选的，所述第二接收单元702，具体用于：
在PDCCH上接收所述基站发送的所述指示信息，所述第二接收单元702在不同子帧的PDCCH上接收到的所述基站发送的所述指示信息指示的资源号相同或不同。
可选的，如图8所示，所述装置70还包括第三确定单元707、第二执行单元708和第二发送单元709；
所述第三确定单元707，用于确定所述资源号的个数为第一Rank的值，所述第一Rank为所述基站为所述终端确定的初始Rank；
所述第二执行单元708，用于根据所述目标信息和所述第一Rank测量第二Rank，并根据测得的所述第二Rank确定RI，所述RI对应的第二Rank小于等于所述第一Rank；
所述第二发送单元709，用于向所述基站发送所述RI。
可选的，如图8所示，所述装置70还包括第三接收单元710，用于：
通过RRC信令接收所述基站发送的资源池，所述资源号为所述 资源池中包括的R个资源的资源号，一个资源对应一个资源号，R为大于等于2的整数。
可选的，所述资源号为目标CSI-RS端口号、正交矩阵的行号或正交矩阵的列号，N个资源单位和一个长度为N的码的组合对应一个目标CSI-RS端口或1个资源单位对应一个目标CSI-RS端口，N为大于等于2的整数。
可选的，所述第二确定单元704具体用于：
确定在所述终端的资源号对应的时频资源上接收到的信息；
采用所述终端的资源号对应的码对在所述终端的资源号对应的时频资源上接收到的信息进行解扩得到所述目标信息；
其中，当所述资源号为目标CSI-RS端口号时，所述资源号对应的码为所述目标CSI-RS端口对应的长度为N的码，当所述资源号为正交矩阵的行号时，所述资源号对应的码为该行号对应的行元素，当所述资源号为正交矩阵的列号时，所述资源号对应的码为该列号对应的列元素。
可选的，所述第一确定单元703具体用于：
根据所述指示信息中包括的R个比特位确定所述终端的资源号，所述R个比特位中的第r个比特位用于指示所述R个资源中的第r个资源是否分配给所述终端，R为大于等于2的整数，r为大于等于1小于等于R的整数；或者，
根据所述指示信息中包括的3个比特位的值确定所述终端的资源号；或者，
根据所述指示信息中包括的4个比特位的值确定所述终端的资源号。
可选的，如图8所示，所述装置70还包括第四接收单元711和第四确定单元712：
所述第四接收单元711，用于接收所述基站发送的触发信息；
所述第四确定单元712，用于根据所述触发信息确定测量信道质量和/或第二Rank。
可选的，所述第二接收单元702，具体用于：
接收所述基站发送的上行调度指示信息，所述上行调度指示信息包括所述指示信息；或者，
接收所述基站发送的下行调度指示信息，所述下行调度指示信息包括所述指示信息。
可选的，如图8所示，所述装置70还包括测量单元713，用于：
根据接收到的所述基站发送的第M个子帧测量所述基站在第M+K个子帧上发送的数据的信道质量；
其中，所述第M个子帧包括所述指示信息、所述目标CSI-RS以及下行数据资源分配方式，所述第M+K个子帧包括所述终端对应的调制编码策略，所述基站在第M个子帧上为所述目标CSI-RS分配的PRB的个数和位置与所述基站在第M+K个子帧上发送的数据信道所占的PRB的个数和位置相同，M、K均为大于等于1的整数。
本发明实施例提供的装置，可以接收到基站指示的资源号，根据该资源号在各个时频资源上接收到的信息中确定目标信息，根据目标信息测量CQI并向基站反馈，而不需要根据在每个时频资源上接收到的信息测量CQI后，将测量到的全部CQI向基站反馈，大大降低了终端的资源消耗。
在硬件实现上，测量CQI的装置70中的各个单元可以以硬件形式内嵌于或独立于测量CQI的装置70的处理器中，也可以以软件形式存储于测量CQI的装置70的存储器中，以便于处理器调用执行以上各个单元对应的操作，该处理器可以为CPU、ASIC或者是被配置成实施本发明实施例的一个或多个集成电路。
本发明实施例还提供了一种测量CQI的装置90，如图9所示，包括：接收器901、存储器902、处理器903和发送器904；
其中，接收器901、存储器902、处理器903和发送器904之间是通过总线系统905耦合在一起的，其中存储器902可能包含随机存取存储器，也可能还包括非易失性存储器，例如至少一个磁盘存储器。存储器902，可以是ISA总线、PCI总线或EISA总线等。该存储器902可以分为地址总线、数据总线、控制总线等。为便于表示，图9中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
所述接收器901，用于接收基站在各个时频资源上发送的信息；
所述接收器901，还用于接收所述基站发送的指示信息，所述指示信息用于向所述终端指示所述终端的资源号；
所述存储器902用于存储代码，所述处理器903根据所述代码执行以下动作：
根据所述指示信息确定所述终端的资源号；
根据所述终端的资源号确定所述信息中的目标信息，所述目标信息为接收到的所述基站在所述终端的资源号对应的时频资源上向所述终端发送的信息，所述时频资源为用于传输CSI-RS或目标CSI-RS的资源单位，所述目标CSI-RS为经过预编码后的CSI-RS；
根据所述目标信息测量信道质量，并根据测得的信道质量确定CQI；
所述发送器904，用于向所述基站发送所述CQI。
可选的，所述接收器901具体用于：
在PDCCH上接收所述基站发送的所述指示信息，所述接收器901在不同子帧的PDCCH上接收到的所述基站发送的所述指示信息指示的资源号相同或不同。
可选的，所述处理器903，还用于确定所述资源号的个数为第一Rank的值，所述第一Rank为所述基站为所述终端确定的初始Rank；
所述处理器903，还用于根据所述目标信息和所述第一Rank测量第二Rank，并根据测得的所述第二Rank确定RI，所述RI对应的第二Rank小于等于所述第一Rank；
所述发送器904，还用于向所述基站发送所述RI。
可选的，所述接收器901还用于：
通过RRC信令接收所述基站发送的所述资源池，所述资源号为资源池中包括的R个资源的资源号，一个资源对应一个资源号，R为大于等于2的整数。
可选的，所述资源号为目标CSI-RS端口号、正交矩阵的行号或正交矩阵的列号，N个资源单位和一个长度为N的码的组合对应一个目标CSI-RS端口或1个资源单位对应一个目标CSI-RS端口，N为大于等于2的整数。
可选的，所述处理器903具体用于：
确定在所述终端的资源号对应的时频资源上接收到的信息；
采用所述终端的资源号对应的码对在所述终端的资源号对应的时频资源上接收到的信息进行解扩得到所述目标信息；
其中，当所述资源号为目标CSI-RS端口号时，所述资源号对应 的码为所述目标CSI-RS端口对应的长度为N的码，当所述资源号为正交矩阵的行号时，所述资源号对应的码为该行号对应的行元素，当所述资源号为正交矩阵的列号时，所述资源号对应的码为该列号对应的列元素。
可选的，所述处理器903具体用于：
根据所述指示信息中包括的R个比特位确定所述终端的资源号，所述R个比特位中的第r个比特位用于指示所述R个资源中的第r个资源是否分配给所述终端，R为大于等于2的整数，r为大于等于1小于等于R的整数；或者，
根据所述指示信息中包括的3个比特位的值确定所述终端的资源号；或者，
根据所述指示信息中包括的4个比特位的值确定所述终端的资源号。
可选的，所述接收器901，还用于接收所述基站发送的触发信息；所述处理器903，还用于根据所述触发信息确定测量信道质量和/或第二Rank。
可选的，所述接收器901具体用于：
接收所述基站发送的上行调度指示信息，所述上行调度指示信息包括所述指示信息；或者，
接收所述基站发送的下行调度指示信息，所述下行调度指示信息包括所述指示信息。
可选的，所述处理器903还用于：
根据接收到的所述基站发送的第M个子帧测量所述基站在第M+K个子帧上发送的数据的信道质量；
其中，所述第M个子帧包括所述指示信息、所述目标CSI-RS以及下行数据资源分配方式，所述第M+K个子帧包括所述终端对应的调制编码策略，所述基站在第M个子帧上为所述目标CSI-RS分配的PRB的个数和位置与所述基站在第M+K个子帧上发送的数据信道所占的PRB的个数和位置相同，M、K均为大于等于1的整数。
本发明实施例提供的装置，可以接收到基站指示的资源号，根据该资源号在各个时频资源上接收到的信息中确定目标信息，根据目标信息测量CQI并向基站反馈，而不需要根据在每个时频资源上接收到的信息测量CQI后，将测量到的全部CQI向基站反馈，大大降低了终端的资源消耗。
在本申请所提供的几个实施例中，应该理解到，所揭露的装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述模块的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个模块或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。
所述作为分离部件说明的模块可以是或者也可以不是物理上分开的，作为模块显示的部件可以是或者也可以不是物理模块，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能模块可以集成在一个处理模块中，也可以两个或两个以上模块集成在一个模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用硬件加软件功能模块的形式实现。
上述以软件功能模块的形式实现的集成的模块，可以存储在一 个计算机可读取存储介质中。上述软件功能模块存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本发明各个实施例所述方法的部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，简称ROM)、随机存取存储器(Random Access Memory，简称RAM)、磁碟或者光盘等各种可以存储程序代码的介质。

Claims (63)

  1. 一种测量信道质量索引CQI的方法，其特征在于，包括：
    基站确定终端的资源号对应的每个时频资源上的目标信道状态信息参考信号CSI-RS，所述目标CSI-RS为经过预编码后的CSI-RS，所述时频资源为用于传输所述CSI-RS或所述目标CSI-RS的资源单位；
    所述基站在所述资源号对应的每个时频资源上向所述终端发送该时频资源上的目标CSI-RS；
    所述基站向所述终端发送指示信息，所述指示信息用于向所述终端指示所述资源号；
    所述基站接收所述终端发送的CQI，所述CQI用于指示信道质量。
  2. 根据权利要求1所述的方法，其特征在于，所述基站向所述终端发送指示信息，包括：
    所述基站在物理下行控制信道PDCCH上向所述终端发送所述指示信息，所述基站在不同子帧的PDCCH上向所述终端发送的所述指示信息指示的资源号相同或不同。
  3. 根据权利要求1或2所述的方法，其特征在于，所述指示信息中指示的所述资源号的个数与第一信道的秩Rank的数值相同，所述方法还包括：
    所述基站接收所述终端发送的秩索引RI，所述RI为所述终端根据所述指示信息中指示的所述资源号对应的每个时频资源上接收到的信息测量第二Rank，并根据测量得到的第二Rank确定的RI；
    所述基站根据所述RI确定所述第二Rank；
    所述基站采用所述终端对应的预编码矩阵对向所述终端发送的数据流进行预编码，并在数据端口上发送所述数据流，所述数据端口个数与所述第一Rank的数值相同，所述数据流的层数与所述第二Rank的数值相同，所述第二Rank小于等于所述第一Rank，所述第一 Rank为所述基站为所述终端确定的初始Rank。
  4. 根据权利要求1-3任一项所述的方法，其特征在于，所述资源号为资源池中包括的R个资源的资源号，一个资源对应一个资源号，R为大于等于2的整数，所述资源池为所述基站定义的资源池，所述方法还包括：
    所述基站通过无线资源控制RRC信令向所述终端发送所述资源池。
  5. 根据权利要求1-4任一项所述的方法，其特征在于，所述资源号为目标CSI-RS端口号、正交矩阵的行号或正交矩阵的列号，N个资源单位和一个长度为N的码的组合对应一个目标CSI-RS端口或1个资源单位对应一个目标CSI-RS端口，N为大于等于2的整数。
  6. 根据权利要求5所述的方法，其特征在于，基站确定终端的资源号对应的每个时频资源上的目标CSI-RS，包括：
    所述基站根据所述资源号、所述资源号对应的CSI-RS以及所述预编码矩阵确定所述资源号对应的每个时频资源上发送的目标CSI-RS。
  7. 根据权利要求6所述的方法，其特征在于，所述基站根据所述资源号、所述资源号对应的CSI-RS以及所述预编码矩阵确定所述资源号对应的每个时频资源上发送的目标CSI-RS，包括：
    所述基站确定所述终端的第一Rank和预编码矩阵；
    所述基站根据所述第一Rank为所述终端分配资源号，所述资源号的个数与所述第一Rank的数值相同；
    所述基站采用所述资源号对应的码对所述资源号对应的CSI-RS扩频，并采用所述预编码矩阵对扩频后得到的每个CSI-RS进行预编码得到所述资源号对应的每个时频资源上发送的目标CSI-RS；
    其中，当所述资源号为目标CSI-RS端口号时，所述资源号对应的码为所述目标CSI-RS端口对应的长度为N的码，当所述资源号为 正交矩阵的行号时，所述资源号对应的码为该行号对应的行元素，当所述资源号为正交矩阵的列号时，所述资源号对应的码为该列号对应的列元素。
  8. 根据权利要求1-7任一项所述的方法，其特征在于，所述资源号为资源池中包括的R个资源的资源号，所述指示信息包括R个比特位，所述R个比特位中的第r个比特位用于指示所述R个资源中的第r个资源是否分配给所述终端，R为大于等于2的整数，r为大于等于1小于等于R的整数；或者，所述指示信息包括3个比特位，所述3个比特位的值不同时，所述指示信息中指示的资源号不同；或者，所述指示信息包括4个比特位，所述4个比特位的值不同时，所述指示信息中指示的资源号不同。
  9. 根据权利要求3所述的方法，其特征在于，所述方法还包括：
    所述基站向所述终端发送触发信息，所述触发信息用于触发所述终端根据在所述指示信息中指示的所述资源号对应的每个时频资源上接收到的信息测量信道质量和/或第二Rank。
  10. 根据权利要求2所述的方法，其特征在于，所述基站在PDCCH上向所述终端发送所述指示信息，包括：
    所述基站向所述终端发送上行调度指示信息，所述上行调度指示信息包括所述指示信息；或者，
    所述基站向所述终端发送下行调度指示信息，所述下行调度指示信息包括所述指示信息。
  11. 根据权利要求10所述的方法，其特征在于，当所述下行调度指示信息包括所述指示信息时，所述方法还包括：
    所述基站在第M个子帧上向所述终端发送所述指示信息、所述目标CSI-RS以及下行数据资源分配方式，用于所述终端测量所述基站在第M+K个子帧上发送的数据的信道质量，M、K均为大于等于1的整数；
    所述基站在第M+K个子帧上向所述终端发送所述终端对应的调制编码策略，所述基站在第M个子帧上为所述目标CSI-RS分配的物理资源块PRB的个数和位置与所述基站在第M+K个子帧上发送的数据信道所占的PRB的个数和位置相同。
  12. 一种测量信道质量索引CQI的方法，其特征在于，包括：
    终端接收基站在各个时频资源上发送的信息；
    所述终端接收所述基站发送的指示信息，所述指示信息用于向所述终端指示所述终端的资源号；
    所述终端根据所述指示信息确定所述终端的资源号；
    所述终端根据所述终端的资源号确定所述信息中的目标信息，所述目标信息为接收到的所述基站在所述终端的资源号对应的时频资源上向所述终端发送的信息，所述时频资源为用于传输信道状态信息参考信号CSI-RS或目标CSI-RS的资源单位，所述目标CSI-RS为经过预编码后的CSI-RS；
    所述终端根据所述目标信息测量信道质量，并根据测得的信道质量确定CQI；
    所述终端向所述基站发送所述CQI。
  13. 根据权利要求12所述的方法，其特征在于，所述终端接收所述基站发送的指示信息，包括：
    所述终端在物理下行控制信道PDCCH上接收所述基站发送的所述指示信息，所述终端在不同子帧的PDCCH上接收到的所述基站发送的所述指示信息指示的资源号相同或不同。
  14. 根据权利要求12或13所述的方法，其特征在于，所述指示信息中指示的所述资源号的个数与第一信道的秩Rank的数值相同，在所述终端根据所述指示信息确定所述终端的资源号之后，所述方法还包括：
    所述终端确定所述资源号的个数为第一Rank的值，所述第一 Rank为所述基站为所述终端确定的初始Rank；
    所述终端根据所述目标信息和所述第一Rank测量第二Rank，并根据测得的所述第二Rank确定秩索引RI，所述RI对应的第二Rank小于等于所述第一Rank；
    所述终端向所述基站发送所述RI。
  15. 根据权利要求12-14任一项所述的方法，其特征在于，所述资源号为资源池中包括的R个资源的资源号，一个资源对应一个资源号，R为大于等于2的整数，所述方法还包括：
    所述终端通过无线资源控制RRC信令接收所述基站发送的所述资源池。
  16. 根据权利要求12-15任一项所述的方法，其特征在于，所述资源号为目标CSI-RS端口号、正交矩阵的行号或正交矩阵的列号，N个资源单位和一个长度为N的码的组合对应一个目标CSI-RS端口或1个资源单位对应一个目标CSI-RS端口，N为大于等于2的整数。
  17. 根据权利要求16所述的方法，其特征在于，所述终端根据所述终端的资源号确定所述信息中的目标信息，包括：
    所述终端确定在所述终端的资源号对应的时频资源上接收到的信息；
    所述终端采用所述终端的资源号对应的码对在所述终端的资源号对应的时频资源上接收到的信息进行解扩得到所述目标信息；
    其中，当所述资源号为目标CSI-RS端口号时，所述资源号对应的码为所述目标CSI-RS端口对应的长度为N的码，当所述资源号为正交矩阵的行号时，所述资源号对应的码为该行号对应的行元素，当所述资源号为正交矩阵的列号时，所述资源号对应的码为该列号对应的列元素。
  18. 根据权利要求12-17任一项所述的方法，其特征在于，所述资源号为资源池中包括的R个资源的资源号，所述终端根据所述指示 信息确定所述终端的资源号，包括：
    所述终端根据所述指示信息中包括的R个比特位确定所述终端的资源号，所述R个比特位中的第r个比特位用于指示所述R个资源中的第r个资源是否分配给所述终端，R为大于等于2的整数，r为大于等于1小于等于R的整数；或者，
    所述终端根据所述指示信息中包括的3个比特位的值确定所述终端的资源号；或者，
    所述终端根据所述指示信息中包括的4个比特位的值确定所述终端的资源号。
  19. 根据权利要求14所述的方法，其特征在于，所述方法还包括：
    所述终端接收所述基站发送的触发信息；
    所述终端根据所述触发信息确定测量信道质量和/或第二Rank。
  20. 根据权利要求13所述的方法，其特征在于，所述终端在PDCCH上接收所述基站发送的所述指示信息，包括：
    所述终端接收所述基站发送的上行调度指示信息，所述上行调度指示信息包括所述指示信息；或者，
    所述终端接收所述基站发送的下行调度指示信息，所述下行调度指示信息包括所述指示信息。
  21. 根据权利要求20所述的方法，其特征在于，当所述下行调度指示信息包括所述指示信息时，所述方法还包括：
    所述终端根据接收到的所述基站发送的第M个子帧测量所述基站在第M+K个子帧上发送的数据的信道质量；
    其中，所述第M个子帧包括所述指示信息、所述目标CSI-RS以及下行数据资源分配方式，所述第M+K个子帧包括所述终端对应的调制编码策略，所述基站在第M个子帧上为所述目标CSI-RS分配的物理资源块PRB的个数和位置与所述基站在第M+K个子帧上发送的 数据信道所占的PRB的个数和位置相同，M、K均为大于等于1的整数。
  22. 一种测量信道质量索引CQI的装置，其特征在于，包括：
    第一确定单元，用于确定终端的资源号对应的每个时频资源上的目标信道状态信息参考信号CSI-RS，所述目标CSI-RS为经过预编码后的CSI-RS，所述时频资源为用于传输所述CSI-RS或所述目标CSI-RS的资源单位；
    第一发送单元，用于在所述资源号对应的每个时频资源上向所述终端发送该时频资源上的目标CSI-RS；
    第二发送单元，用于向所述终端发送指示信息，所述指示信息用于向所述终端指示所述资源号；
    第一接收单元，用于接收所述终端发送的CQI，所述CQI用于指示信道质量。
  23. 根据权利要求22所述的装置，其特征在于，所述第二发送单元具体用于：
    在物理下行控制信道PDCCH上向所述终端发送所述指示信息，所述第二发送单元在不同子帧的PDCCH上向所述终端发送的所述指示信息指示的资源号相同或不同。
  24. 根据权利要求22或23所述的装置，其特征在于，所述装置还包括第二接收单元、第二确定单元、预编码单元和第三发送单元；
    所述第二接收单元，用于接收所述终端发送的秩索引RI，所述RI为所述终端根据所述指示信息中指示的所述资源号对应的每个时频资源上接收到的信息测量第二Rank，并根据测量得到的第二Rank确定的RI；
    所述第二确定单元，用于根据所述RI确定所述第二Rank；
    所述预编码单元，用于采用所述终端对应的预编码矩阵对向所述终端发送的数据流进行预编码；
    所述第三发送单元，用于在数据端口上发送所述数据流，所述数据端口个数与所述第一Rank的数值相同，所述数据流的层数与所述第二Rank的数值相同，所述第二Rank小于等于所述第一Rank，所述第一Rank为所述基站为所述终端确定的初始Rank。
  25. 根据权利要求22-24任一项所述的装置，其特征在于，所述装置还包括第四发送单元；
    所述第四发送单元，用于通过无线资源控制RRC信令向所述终端发送所述资源池，所述资源号为资源池中包括的R个资源的资源号，一个资源对应一个资源号，R为大于等于2的整数。
  26. 根据权利要求22-25任一项所述的装置，其特征在于，所述资源号为目标CSI-RS端口号、正交矩阵的行号或正交矩阵的列号，N个资源单位和一个长度为N的码的组合对应一个目标CSI-RS端口或1个资源单位对应一个目标CSI-RS端口，N为大于等于2的整数。
  27. 根据权利要求26所述的装置，其特征在于，所述第一确定单元具体用于：
    根据所述资源号、所述资源号对应的CSI-RS以及所述预编码矩阵确定所述资源号对应的每个时频资源上发送的目标CSI-RS。
  28. 根据权利要求27所述的装置，其特征在于，所述第一确定单元具体用于：
    确定所述终端的第一Rank和预编码矩阵；
    根据所述第一Rank为所述终端分配资源号，所述资源号的个数与所述第一Rank的数值相同；
    采用所述资源号对应的码对所述资源号对应的CSI-RS扩频，并采用所述预编码矩阵对扩频后得到的每个CSI-RS进行预编码得到所述资源号对应的每个时频资源上发送的目标CSI-RS；
    其中，当所述资源号为目标CSI-RS端口号时，所述资源号对应的码为所述目标CSI-RS端口对应的长度为N的码，当所述资源号为 正交矩阵的行号时，所述资源号对应的码为该行号对应的行元素，当所述资源号为正交矩阵的列号时，所述资源号对应的码为该列号对应的列元素。
  29. 根据权利要求22-28任一项所述的装置，其特征在于，所述资源号为资源池中包括的R个资源的资源号，所述指示信息包括R个比特位，所述R个比特位中的第r个比特位用于指示所述R个资源中的第r个资源是否分配给所述终端，R为大于等于2的整数，r为大于等于1小于等于R的整数；或者，所述指示信息包括3个比特位，所述3个比特位的值不同时，所述指示信息中指示的资源号不同；或者，所述指示信息包括4个比特位，所述4个比特位的值不同时，所述指示信息中指示的资源号不同。
  30. 根据权利要求24所述的装置，其特征在于，所述装置还包括第五发送单元；
    所述第五发送单元，用于向所述终端发送触发信息，所述触发信息用于触发所述终端根据在所述指示信息中指示的所述资源号对应的每个时频资源上接收到的信息测量信道质量和/或第二Rank。
  31. 根据权利要求23所述的装置，其特征在于，所述第二发送单元具体用于：
    向所述终端发送上行调度指示信息，所述上行调度指示信息包括所述指示信息；或者，
    向所述终端发送下行调度指示信息，所述下行调度指示信息包括所述指示信息。
  32. 根据权利要求31所述的装置，其特征在于，所述装置还包括第六发送单元，用于：
    在第M个子帧上向所述终端发送所述指示信息、所述目标CSI-RS以及下行数据资源分配方式，用于所述终端测量所述基站在第M+K个子帧上发送的数据的信道质量，M、K均为大于等于1的 整数；
    在第M+K个子帧上向所述终端发送所述终端对应的调制编码策略，所述基站在第M个子帧上为所述目标CSI-RS分配的物理资源块PRB的个数和位置与所述基站在第M+K个子帧上发送的数据信道所占的PRB的个数和位置相同。
  33. 一种测量信道质量索引CQI的装置，其特征在于，包括：
    第一接收单元，用于接收基站在各个时频资源上发送的信息；
    第二接收单元，用于接收所述基站发送的指示信息，所述指示信息用于向所述终端指示所述终端的资源号；
    第一确定单元，用于根据所述指示信息确定所述终端的资源号；
    第二确定单元，用于根据所述终端的资源号确定所述信息中的目标信息，所述目标信息为接收到的所述基站在所述终端的资源号对应的时频资源上向所述终端发送的信息，所述时频资源为用于传输信道状态信息参考信号CSI-RS或目标CSI-RS的资源单位，所述目标CSI-RS为经过预编码后的CSI-RS；
    第一执行单元，用于根据所述目标信息测量信道质量，并根据测得的信道质量确定CQI；
    第一发送单元，用于向所述基站发送所述CQI。
  34. 根据权利要求33所述的装置，其特征在于，所述第二接收单元，具体用于：
    在物理下行控制信道PDCCH上接收所述基站发送的所述指示信息，所述第二接收单元在不同子帧的PDCCH上接收到的所述基站发送的所述指示信息指示的资源号相同或不同。
  35. 根据权利要求33或34所述的装置，其特征在于，所述装置还包括第三确定单元、第二执行单元和第二发送单元；
    所述第三确定单元，用于确定所述资源号的个数为第一Rank的值，所述第一Rank为所述基站为所述终端确定的初始Rank；
    所述第二执行单元，用于根据所述目标信息和所述第一Rank测量第二Rank，并根据测得的所述第二Rank确定秩索引RI，所述RI对应的第二Rank小于等于所述第一Rank；
    所述第二发送单元，用于向所述基站发送所述RI。
  36. 根据权利要求33-35任一项所述的装置，其特征在于，所述装置还包括第三接收单元，用于：
    通过无线资源控制RRC信令接收所述基站发送的资源池，所述资源号为所述资源池中包括的R个资源的资源号，一个资源对应一个资源号，R为大于等于2的整数。
  37. 根据权利要求33-36任一项所述的装置，其特征在于，所述资源号为目标CSI-RS端口号、正交矩阵的行号或正交矩阵的列号，N个资源单位和一个长度为N的码的组合对应一个目标CSI-RS端口或1个资源单位对应一个目标CSI-RS端口，N为大于等于2的整数。
  38. 根据权利要求37所述的装置，其特征在于，所述第二确定单元具体用于：
    确定在所述终端的资源号对应的时频资源上接收到的信息；
    采用所述终端的资源号对应的码对在所述终端的资源号对应的时频资源上接收到的信息进行解扩得到所述目标信息；
    其中，当所述资源号为目标CSI-RS端口号时，所述资源号对应的码为所述目标CSI-RS端口对应的长度为N的码，当所述资源号为正交矩阵的行号时，所述资源号对应的码为该行号对应的行元素，当所述资源号为正交矩阵的列号时，所述资源号对应的码为该列号对应的列元素。
  39. 根据权利要求33-38任一项所述的装置，其特征在于，所述第一确定单元具体用于：
    根据所述指示信息中包括的R个比特位确定所述终端的资源号，所述R个比特位中的第r个比特位用于指示所述R个资源中的第r个 资源是否分配给所述终端，R为大于等于2的整数，r为大于等于1小于等于R的整数；或者，
    根据所述指示信息中包括的3个比特位的值确定所述终端的资源号；或者，
    根据所述指示信息中包括的4个比特位的值确定所述终端的资源号。
  40. 根据权利要求35所述的装置，其特征在于，所述装置还包括第四接收单元和第四确定单元：
    所述第四接收单元，用于接收所述基站发送的触发信息；
    所述第四确定单元，用于根据所述触发信息确定测量信道质量和/或第二Rank。
  41. 根据权利要求34所述的装置，其特征在于，所述第二接收单元，具体用于：
    接收所述基站发送的上行调度指示信息，所述上行调度指示信息包括所述指示信息；或者，
    接收所述基站发送的下行调度指示信息，所述下行调度指示信息包括所述指示信息。
  42. 根据权利要求41所述的装置，其特征在于，所述装置还包括测量单元，用于：
    根据接收到的所述基站发送的第M个子帧测量所述基站在第M+K个子帧上发送的数据的信道质量；
    其中，所述第M个子帧包括所述指示信息、所述目标CSI-RS以及下行数据资源分配方式，所述第M+K个子帧包括所述终端对应的调制编码策略，所述基站在第M个子帧上为所述目标CSI-RS分配的物理资源块PRB的个数和位置与所述基站在第M+K个子帧上发送的数据信道所占的PRB的个数和位置相同，M、K均为大于等于1的整数。
  43. 一种测量信道质量索引CQI的装置，其特征在于，包括：存储器、处理器、发送器和接收器；
    所述存储器用于存储代码，所述处理器根据所述代码执行以下动作：
    确定终端的资源号对应的每个时频资源上的目标信道状态信息参考信号CSI-RS，所述目标CSI-RS为经过预编码后的CSI-RS，所述时频资源为用于传输所述CSI-RS或所述目标CSI-RS的资源单位；
    所述发送器，用于在所述资源号对应的每个时频资源上向所述终端发送该时频资源上的目标CSI-RS；
    所述发送器，还用于向所述终端发送指示信息，所述指示信息用于向所述终端指示所述资源号；
    所述接收器，用于接收所述终端发送的CQI，所述CQI用于指示信道质量。
  44. 根据权利要求43所述的装置，其特征在于，所述发送器具体用于：
    在物理下行控制信道PDCCH上向所述终端发送所述指示信息，所述发送器在不同子帧的PDCCH上向所述终端发送的所述指示信息指示的资源号相同或不同。
  45. 根据权利要求43或44所述的装置，其特征在于，
    所述接收器，还用于接收所述终端发送的秩索引RI，所述RI为所述终端根据所述指示信息中指示的所述资源号对应的每个时频资源上接收到的信息测量第二Rank，并根据测量得到的第二Rank确定的RI；
    所述处理器，还用于根据所述RI确定所述第二Rank；
    所述处理器，还用于采用所述终端对应的预编码矩阵对向所述终端发送的数据流进行预编码；
    所述发送器，还用于在数据端口上发送所述数据流，所述数据端 口个数与所述第一Rank的数值相同，所述数据流的层数与所述第二Rank的数值相同，所述第二Rank小于等于所述第一Rank，所述第一Rank为所述基站为所述终端确定的初始Rank。
  46. 根据权利要求43-45任一项所述的装置，其特征在于，所述发送器还用于：
    通过无线资源控制RRC信令向所述终端发送所述资源池，所述资源号为资源池中包括的R个资源的资源号，一个资源对应一个资源号，R为大于等于2的整数。
  47. 根据权利要求43-46任一项所述的装置，其特征在于，所述资源号为目标CSI-RS端口号、正交矩阵的行号或正交矩阵的列号，N个资源单位和一个长度为N的码的组合对应一个目标CSI-RS端口或1个资源单位对应一个目标CSI-RS端口，N为大于等于2的整数。
  48. 根据权利要求47所述的装置，其特征在于，所述处理器具体用于：
    根据所述资源号、所述资源号对应的CSI-RS以及所述预编码矩阵确定所述资源号对应的每个时频资源上发送的目标CSI-RS。
  49. 根据权利要求48所述的装置，其特征在于，所述处理器具体用于：
    确定所述终端的第一Rank和预编码矩阵；
    根据所述第一Rank为所述终端分配资源号，所述资源号的个数与所述第一Rank的数值相同；
    采用所述资源号对应的码对所述资源号对应的CSI-RS扩频，并采用所述预编码矩阵对扩频后得到的每个CSI-RS进行预编码得到所述资源号对应的每个时频资源上发送的目标CSI-RS；
    其中，当所述资源号为目标CSI-RS端口号时，所述资源号对应的码为所述目标CSI-RS端口对应的长度为N的码，当所述资源号为正交矩阵的行号时，所述资源号对应的码为该行号对应的行元素，当 所述资源号为正交矩阵的列号时，所述资源号对应的码为该列号对应的列元素。
  50. 根据权利要求43-49任一项所述的装置，其特征在于，所述资源号为资源池中包括的R个资源的资源号，所述指示信息包括R个比特位，所述R个比特位中的第r个比特位用于指示所述R个资源中的第r个资源是否分配给所述终端，R为大于等于2的整数，r为大于等于1小于等于R的整数；或者，所述指示信息包括3个比特位，所述3个比特位的值不同时，所述指示信息中指示的资源号不同；或者，所述指示信息包括4个比特位，所述4个比特位的值不同时，所述指示信息中指示的资源号不同。
  51. 根据权利要求45所述的装置，其特征在于，所述发送器还用于：
    向所述终端发送触发信息，所述触发信息用于触发所述终端根据在所述指示信息中指示的所述资源号对应的每个时频资源上接收到的信息测量信道质量和/或第二Rank。
  52. 根据权利要求44所述的装置，其特征在于，所述发送器具体用于：
    向所述终端发送上行调度指示信息，所述上行调度指示信息包括所述指示信息；或者，
    向所述终端发送下行调度指示信息，所述下行调度指示信息包括所述指示信息。
  53. 根据权利要求52所述的装置，其特征在于，所述发送器还用于：
    在第M个子帧上向所述终端发送所述指示信息、所述目标CSI-RS以及下行数据资源分配方式，用于所述终端测量所述基站在第M+K个子帧上发送的数据的信道质量，M、K均为大于等于1的整数；
    在第M+K个子帧上向所述终端发送所述终端对应的调制编码策略，所述基站在第M个子帧上为所述目标CSI-RS分配的物理资源块PRB的个数和位置与所述基站在第M+K个子帧上发送的数据信道所占的PRB的个数和位置相同。
  54. 一种测量信道质量索引CQI的装置，其特征在于，包括：接收器、存储器、处理器和发送器；
    所述接收器，用于接收基站在各个时频资源上发送的信息；
    所述接收器，还用于接收所述基站发送的指示信息，所述指示信息用于向所述终端指示所述终端的资源号；
    所述存储器用于存储代码，所述处理器根据所述代码执行以下动作：
    根据所述指示信息确定所述终端的资源号；
    根据所述终端的资源号确定所述信息中的目标信息，所述目标信息为接收到的所述基站在所述终端的资源号对应的时频资源上向所述终端发送的信息，所述时频资源为用于传输信道状态信息参考信号CSI-RS或目标CSI-RS的资源单位，所述目标CSI-RS为经过预编码后的CSI-RS；
    根据所述目标信息测量信道质量，并根据测得的信道质量确定CQI；
    所述发送器，用于向所述基站发送所述CQI。
  55. 根据权利要求54所述的装置，其特征在于，所述接收器具体用于：
    在物理下行控制信道PDCCH上接收所述基站发送的所述指示信息，所述接收器在不同子帧的PDCCH上接收到的所述基站发送的所述指示信息指示的资源号相同或不同。
  56. 根据权利要求54或55所述的装置，其特征在于，
    所述处理器，还用于确定所述资源号的个数为第一Rank的值， 所述第一Rank为所述基站为所述终端确定的初始Rank；
    所述处理器，还用于根据所述目标信息和所述第一Rank测量第二Rank，并根据测得的所述第二Rank确定秩索引RI，所述RI对应的第二Rank小于等于所述第一Rank；
    所述发送器，还用于向所述基站发送所述RI。
  57. 根据权利要求54-56任一项所述的装置，其特征在于，所述接收器还用于：
    通过无线资源控制RRC信令接收所述基站发送的所述资源池，所述资源号为资源池中包括的R个资源的资源号，一个资源对应一个资源号，R为大于等于2的整数。
  58. 根据权利要求54-57任一项所述的装置，其特征在于，所述资源号为目标CSI-RS端口号、正交矩阵的行号或正交矩阵的列号，N个资源单位和一个长度为N的码的组合对应一个目标CSI-RS端口或1个资源单位对应一个目标CSI-RS端口，N为大于等于2的整数。
  59. 根据权利要求58所述的装置，其特征在于，所述处理器具体用于：
    确定在所述终端的资源号对应的时频资源上接收到的信息；
    采用所述终端的资源号对应的码对在所述终端的资源号对应的时频资源上接收到的信息进行解扩得到所述目标信息；
    其中，当所述资源号为目标CSI-RS端口号时，所述资源号对应的码为所述目标CSI-RS端口对应的长度为N的码，当所述资源号为正交矩阵的行号时，所述资源号对应的码为该行号对应的行元素，当所述资源号为正交矩阵的列号时，所述资源号对应的码为该列号对应的列元素。
  60. 根据权利要求54-59任一项所述的装置，其特征在于，所述处理器具体用于：
    根据所述指示信息中包括的R个比特位确定所述终端的资源号， 所述R个比特位中的第r个比特位用于指示所述R个资源中的第r个资源是否分配给所述终端，R为大于等于2的整数，r为大于等于1小于等于R的整数；或者，
    根据所述指示信息中包括的3个比特位的值确定所述终端的资源号；或者，
    根据所述指示信息中包括的4个比特位的值确定所述终端的资源号。
  61. 根据权利要求56所述的装置，其特征在于，
    所述接收器，还用于接收所述基站发送的触发信息；
    所述处理器，还用于根据所述触发信息确定测量信道质量和/或第二Rank。
  62. 根据权利要求55所述的装置，其特征在于，所述接收器具体用于：
    接收所述基站发送的上行调度指示信息，所述上行调度指示信息包括所述指示信息；或者，
    接收所述基站发送的下行调度指示信息，所述下行调度指示信息包括所述指示信息。
  63. 根据权利要求62所述的装置，其特征在于，所述处理器还用于：
    根据接收到的所述基站发送的第M个子帧测量所述基站在第M+K个子帧上发送的数据的信道质量；
    其中，所述第M个子帧包括所述指示信息、所述目标CSI-RS以及下行数据资源分配方式，所述第M+K个子帧包括所述终端对应的调制编码策略，所述基站在第M个子帧上为所述目标CSI-RS分配的物理资源块PRB的个数和位置与所述基站在第M+K个子帧上发送的数据信道所占的PRB的个数和位置相同，M、K均为大于等于1的整数。
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EP3419326A4 (en) 2018-12-26
EP3419326A1 (en) 2018-12-26
CN108781378B (zh) 2021-06-22

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