WO2019024611A1 - 基于pmi的处理方法、装置、相关设备及存储介质 - Google Patents

基于pmi的处理方法、装置、相关设备及存储介质 Download PDF

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Publication number
WO2019024611A1
WO2019024611A1 PCT/CN2018/091027 CN2018091027W WO2019024611A1 WO 2019024611 A1 WO2019024611 A1 WO 2019024611A1 CN 2018091027 W CN2018091027 W CN 2018091027W WO 2019024611 A1 WO2019024611 A1 WO 2019024611A1
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Prior art keywords
subband
pmi
information
data channel
control channel
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English (en)
French (fr)
Inventor
倪吉庆
周伟
孙奇
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China Mobile Communications Group Co Ltd
Research Institute of China Mobile Communication Co Ltd
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China Mobile Communications Group Co Ltd
Research Institute of China Mobile Communication Co Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413MIMO systems
    • H04B7/0456Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413MIMO systems
    • H04B7/0456Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H04B7/046Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account

Definitions

  • the present disclosure relates to the field of wireless communications, and in particular, to a processing method, apparatus, terminal, base station, and computer readable storage medium based on a Precoding Matrix Index (PMI).
  • PMI Precoding Matrix Index
  • the physical layer control channel adopts a fixed transmission diversity scheme, and the data channel can adopt multiple transmission modes, including: transmission mode 1 to transmission mode 10.
  • transmission mode 1 to transmission mode 10 there are multiple closed-loop transmission modes in transmission mode 1 to transmission mode 10, such as transmission mode 4: closed-loop spatial multiplexing, transmission mode 5: MU-MIMO, transmission mode 6 single-layer closed-loop MIMO, and the like.
  • transmission mode 4 closed-loop spatial multiplexing
  • transmission mode 5 MU-MIMO
  • transmission mode 6 single-layer closed-loop MIMO and the like.
  • CSI terminal feedback channel state information
  • the single-layer beamforming transmission mode of the new air interface of the fifth generation mobile communication technology (5G) can effectively improve the coverage performance.
  • the control channel In order to support a closed-loop single-layer precoding scheme, the control channel also requires PMI information.
  • one scheme is to directly adopt the PMI of the data channel of a certain sub-band as the PMI of the control channel of the corresponding sub-band.
  • the terminal feeds back an indication of a multi-layer codeword, the PMI of the data channel cannot be directly used as the PMI of the control channel for one sub-band.
  • embodiments of the present disclosure provide a PMI-based processing method, apparatus, terminal, base station, and computer readable storage medium.
  • the embodiment of the present disclosure provides a PMI-based processing method, including:
  • the fed back PMI and the first information indicate a precoding matrix of the subband data channel and a precoding vector of the subband control channel.
  • the data channel transmits data using a multi-stream precoding method.
  • the manner of feeding back the PMI and the first information includes one of the following:
  • Transmitting a PMI of the subband data channel feeding back a first information that is empty; a PMI of the subband data channel indicating a precoding matrix of a subband data channel; and a vector or random location of a fixed position in the precoding matrix
  • the vector is used by the base station to determine a precoding vector of the subband control channel;
  • Radio resource control RRC signaling or system information sent by the base station
  • the first information independently indicates a precoding vector of the subband control channel
  • a PMI of the subband data channel indicates a codeword in a codebook;
  • the first information indicates a precoding vector of a particular location in the codeword.
  • the embodiment of the present disclosure further provides a PMI-based processing method, including:
  • Parsing the CSI to obtain a PMI and first information determining, by using the PMI and the first information, a precoding matrix of the subband data channel and a precoding vector of the subband control channel; Multi-stream precoding to transmit data.
  • the manner of determining the precoding matrix of the subband data channel and the precoding vector of the subband control channel by using the PMI and the first information includes one of the following:
  • Determining a precoding matrix of the subband data channel by using a PMI of the subband data channel when the PMI is a PMI of the subband data channel and the first information is empty; and the subband a vector of a fixed position or a random position in a precoding matrix corresponding to a PMI of the data channel as a precoding vector of the subband control channel;
  • the manner of determining the precoding vector of the subband control channel by using the first information includes one of the following manners:
  • the determining, by using the first information and the PMI of the subband data channel, the precoding vector of the subband control channel including:
  • a precoding vector of a specific position in the codeword indicated by the first information is used as a precoding vector of the subband control channel.
  • the feedback manner of the PMI and the first information is indicated to the terminal by RRC signaling or system information.
  • the method further includes:
  • the PMI of the subband data channel is directly used as the PMI of the subband control channel.
  • the embodiment of the present disclosure further provides a PMI-based processing apparatus, including:
  • a measurement module for performing channel measurement on the sub-band
  • the fed back PMI and the first information indicate a precoding matrix of the subband data channel and a precoding vector of the subband control channel.
  • the data channel transmits data using a multi-stream precoding method.
  • the embodiment of the present disclosure further provides a PMI-based processing apparatus, including:
  • a receiving unit configured to receive CSI of a subband fed back by the terminal; a bandwidth of the subband corresponding to part or all of a control channel bandwidth;
  • a parsing unit configured to parse the CSI, to obtain a PMI and first information
  • the embodiment of the present disclosure further provides a terminal, including:
  • a first processor configured to perform channel measurement on the sub-band
  • a first communication interface configured to feed back CSI to the base station
  • the fed back PMI and the first information indicate a precoding matrix of the subband data channel and a precoding vector of the subband control channel.
  • the data channel transmits data using a multi-stream precoding method.
  • the manner in which the first communication interface feeds back the PMI and the first information includes one of the following:
  • Transmitting a PMI of the subband data channel feeding back a first information that is empty; a PMI of the subband data channel indicating a precoding matrix of a subband data channel; and a vector or random location of a fixed position in the precoding matrix
  • the vector is used by the base station to determine a precoding vector of the subband control channel;
  • the first communications interface is further configured to receive radio resource control RRC signaling or system information sent by the base station;
  • the first processor is further configured to parse the RRC signaling or system information, and obtain a feedback manner of the PMI and the first information;
  • the first communication interface feeds back the PMI and the first information according to the obtained manner.
  • the embodiment of the present disclosure further provides a base station, including:
  • a second communication interface configured to receive CSI of the subband fed back by the terminal; the bandwidth of the subband corresponds to part or all of the control channel bandwidth;
  • a second processor configured to parse the CSI, obtain a PMI and first information; determine, by using the PMI and the first information, a precoding matrix of the subband data channel and a precoding vector of the subband control channel;
  • the sub-band data channel transmits data by using a multi-stream precoding method.
  • Determining a precoding matrix of the subband data channel by using a PMI of the subband data channel when the PMI is a PMI of the subband data channel and the first information is empty; and the subband a vector of a fixed position or a random position in a precoding matrix corresponding to a PMI of the data channel as a precoding vector of the subband control channel;
  • the second processor is configured to perform one of the following operations:
  • the second processor is specifically configured to:
  • the second communication interface is further configured to: before receiving the CSI of the subband fed back by the terminal, indicate the feedback manner of the PMI and the first information to the terminal by using RRC signaling or system information.
  • the PMI of the subband data channel is directly used as the PMI of the subband control channel.
  • the embodiment of the present disclosure further provides a terminal, the terminal comprising: a first processor, a first memory, and a computer program stored on the first memory and capable of running on the first processor;
  • the first processor is configured to perform the steps of any method on the terminal side when the computer program is executed.
  • An embodiment of the present disclosure further provides a base station, including: a second processor, a second memory, and a computer program stored on the second memory and capable of running on the second processor;
  • the second processor is configured to perform the steps of any method on the base station side when the computer program is executed.
  • the embodiment of the present disclosure further provides a computer readable storage medium having stored thereon a computer program, which when executed by the processor, implements the steps of any method on the terminal side, or implements the steps of any method on the base station side.
  • the PMI-based processing method, apparatus, terminal, base station, and computer readable storage medium fed back the PMI and the first information when the CSI is fed back when the data channel is transmitted by using the multi-stream precoding method.
  • the fed back PMI and the first information indicate a precoding matrix of the subband data channel and a precoding vector of the subband control channel, and implement feedback of a control channel PMI, thus supporting a single channel precoding transmission mode of the control channel Therefore, the coverage performance of the downlink control channel can be effectively improved, and the reliability of control information transmission is improved.
  • FIG. 1 is a schematic flowchart of a PMI-based processing method on a terminal side according to an embodiment of the present disclosure
  • FIG. 2 is a schematic diagram of a codebook corresponding to an antenna port according to Embodiment 2 of the present disclosure
  • FIG. 3 is a schematic diagram of a codebook corresponding to an antenna port according to Embodiment 4 of the present disclosure
  • FIG. 4 is a schematic flowchart of a PMI-based processing method on a base station side according to an embodiment of the present disclosure
  • FIG. 5 is a schematic flowchart of a PMI-based processing method according to an embodiment of the present disclosure
  • FIG. 7 is a schematic structural diagram of another PMI-based processing apparatus according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of a PMI-based processing system according to an embodiment of the present disclosure.
  • one scheme is to directly adopt the PMI of the data channel of a certain sub-band as the PMI of the control channel of the corresponding sub-band.
  • This scheme can be used directly when the data channel uses a single-stream precoding scheme.
  • the terminal feeds back the indication of the multi-layer codeword, that is, the data channel adopts the multi-stream precoding method, it cannot be directly used for the single-layer transmission of the control channel, that is, the PMI of the data channel cannot be directly used as the corresponding sub-director.
  • the PMI of the control channel with.
  • the fed PMI and the first information indicate the pre-sampling of the sub-band data channel.
  • a coding matrix and a precoding vector of the subband control channel the data channel transmits data by using a multi-stream precoding method; and the CSI of the subband fed back by the terminal is parsed in the base station to obtain a PMI and first information; using the PMI And the first information determines a precoding matrix of the subband data channel and a precoding vector of the subband control channel.
  • the solution provided by the embodiment of the present disclosure may be understood as a scheme for indicating control channel precoding by using a data channel PMI.
  • the data channel is transmitted by using the multi-stream precoding method
  • the PMI and the first information are fed back.
  • the fed back PMI and the first information indicate a precoding matrix of the subband data channel and a precoding vector of the subband control channel, thereby implementing feedback of a control channel PMI, and thus capable of supporting a control channel single stream precoding transmission
  • the mode can effectively improve the coverage performance of the downlink control channel and improve the reliability of control information transmission.
  • the embodiment of the present disclosure provides a PMI-based processing method, which is applied to a terminal. As shown in FIG. 1 , the method includes:
  • Step 101 Perform channel measurement on the subband.
  • Step 102 Feed back CSI to the base station.
  • the fed PMI and the first information indicate a precoding matrix of the subband data channel and a preamble of the subband control channel.
  • An encoding vector; the data channel transmits data using a multi-stream precoding method.
  • the PMI fed back by the terminal is the PMI of the data channel, that is, the PMI of the data channel is directly used by the base station as the PMI of the control channel.
  • the transmission of data and control information adopts a closed loop transmission mode.
  • the base station performs configuration of the corresponding transmission mode based on the CSI fed back by the terminal.
  • the CSI includes: a Channel Quality Index (CQI), a Rank Indicator (RI, Rand Index), a PMI, and a Precoding Type Index (PTI).
  • CQI Channel Quality Index
  • RI Rank Indicator
  • PMI Precoding Type Index
  • an extra bit of the PMI of the data channel may be unnecessary, and a vector of a fixed position or a random position in the multi-stream codeword indicated by the PMI of the data channel is selected as the precoding vector of the control channel.
  • the manner of feeding back the PMI and the first information may be:
  • Transmitting a PMI of the subband data channel feeding back a first information that is empty; a PMI of the subband data channel indicating a precoding matrix of a subband data channel; and a vector or random location of a fixed position in the precoding matrix
  • the vector is used by the base station to determine a precoding vector for the subband control channel.
  • the manner of feeding back the PMI and the first information may be:
  • the first information can independently indicate a precoding vector of the subband control channel; or the first information and The PMI of the subband data channel jointly indicates a precoding vector of the subband control channel.
  • the base station and the terminal may pre-determine which one of the above two manners is used to implement the indication of the precoding vector of the subband control channel.
  • a PMI of the subband data channel indicates a code in a codebook. a word; the first information indicating a precoding vector of a particular location in the codeword.
  • the base station can configure which manner the terminal uses to feed back the PMI and the first information through the high layer signaling.
  • the method may further include:
  • the PMI and the first information are fed back according to the obtained manner.
  • the terminal when the terminal only supports one feedback mode, the PMI and the first information are fed back by using a feedback mode supported by the terminal.
  • the base station needs to perform corresponding processing based on the CSI of the terminal feedback.
  • the embodiment of the present disclosure further provides a PMI-based processing method, which is applied to a base station. As shown in FIG. 4, the method includes:
  • Step 401 Receive CSI of a subband fed back by the terminal.
  • the bandwidth of the sub-band corresponds to part or all of the control channel bandwidth.
  • Step 402 Parse the CSI to obtain a PMI and first information.
  • Step 403 Determine, by using the PMI and the first information, a precoding matrix of the subband data channel and a precoding vector of the subband control channel.
  • the sub-band data channel uses multi-stream pre-coding to transmit data.
  • the base station when the subband data channel transmits data by using a single stream precoding manner, the base station directly uses the PMI of the subband data channel as the PMI of the subband control channel.
  • the transmission of data and control information adopts a closed loop transmission mode.
  • the base station performs configuration of the corresponding transmission mode based on the CSI fed back by the terminal.
  • it is necessary to determine a precoding matrix of the subband data channel and a precoding vector of the subband control channel.
  • the precoding matrix of the subband data channel and the precoding vector of the subband control channel may be determined by:
  • the base station can determine the precoding matrix of the subband data channel and the precoding of the subband control channel by one of the above two manners.
  • the base station can configure which way the terminal feeds back the PMI and the first information through higher layer signaling.
  • the method may further include:
  • the feedback manner of the PMI and the first information is indicated to the terminal by RRC signaling or system information.
  • the base station may independently determine the precoding vector of the subband control channel by using the first information when determining the manner of the precoding vector of the subband control channel by using the first information; or using the first
  • the information and the PMI of the subband data channel jointly determine a precoding vector for the subband control channel.
  • the base station and the terminal may pre-arrange which of the above two methods is used to implement the indication of the precoding vector of the subband control channel. Therefore, the base station can determine the precoding vector of the subband control channel by using the first information according to an agreed indication manner.
  • the base station when the first information and the PMI of the sub-band data channel jointly indicate a precoding vector of the sub-band control channel, the base station utilizes a PMI that utilizes the sub-band data channel. Determining a codeword in a codebook;
  • the base station uses a precoding vector of a specific position in the codeword indicated by the first information as a precoding vector of the subband control channel.
  • the embodiment of the present disclosure further provides a PMI-based processing method, as shown in FIG. 5, the method includes:
  • Step 501 The terminal performs channel measurement on the subband and feeds back CSI to the base station.
  • the fed PMI and the first information indicate a precoding matrix of the subband data channel and a preamble of the subband control channel.
  • An encoding vector; the data channel transmits data using a multi-stream precoding method.
  • Step 502 The base station receives the CSI of the subband fed back by the terminal.
  • Step 503 The base station parses the CSI to obtain a feedback PMI and first information.
  • Step 504 The base station determines, by using the fed PMI and the first information, a precoding matrix of the subband data channel and a precoding vector of the subband control channel.
  • the PMI-based processing method when the data channel is transmitted by using the multi-stream pre-coding method, feedbacks the PMI and the first information when the CSI is fed back, and indicates the sub-band with the feedback PMI and the first information.
  • the precoding matrix of the data channel and the precoding vector of the subband control channel implement feedback of the control channel PMI, so that the single channel precoding transmission mode of the control channel can be supported, thereby effectively improving the coverage performance of the downlink control channel. Improve the reliability of control information transmission.
  • the application scenario of this application embodiment is as follows: the base station side has 4 antenna ports, and the codebook is as shown in FIG. 3. Within a cell, multiple terminals (including terminal 1, terminal 2, and terminal 3) are configured in a closed loop transmission mode.
  • the base station side fixedly selects the first vector in the feedback codeword as the precoding vector of the control channel.
  • the step of the base station determining the precoding vector of the control channel of each terminal includes:
  • each terminal feeds back CSI to the base station
  • the terminal 1 performs channel measurement on the subband corresponding to its control channel, and feeds back CSI;
  • the terminal 2 performs channel measurement on the subband corresponding to its control channel, and feeds back CSI;
  • the double-layer codeword corresponding to the PMI is
  • the terminal 3 performs channel measurement on the subband corresponding to its control channel, and feeds back CSI;
  • the double-layer codeword corresponding to the PMI is
  • the base station side determines a precoding vector of each control channel.
  • the base station directly adopts W 1 ⁇ 1 ⁇ as a precoding vector of the control channel.
  • W 8 ⁇ 1 ⁇ is the first precoding vector in the W 8 ⁇ 1, 2 ⁇ codeword, W 8 ⁇ 1 ⁇ is used as the precoding vector of the control channel.
  • the application scenario of this application embodiment is as follows: the base station side has 4 antenna ports, and the codebook is as shown in FIG. 3. Within a cell, multiple terminals (including terminal 1, terminal 2, and terminal 3) are configured in a closed loop transmission mode.
  • the base station side randomly selects one of the feedback codewords as the precoding vector of the control channel.
  • each terminal feeds back CSI to the base station
  • the terminal 1 performs channel measurement on the subband corresponding to its control channel, and feeds back CSI;
  • the terminal 2 performs channel measurement on the subband corresponding to its control channel, and feeds back CSI;
  • the double-layer codeword corresponding to the PMI is
  • the terminal 3 performs channel measurement on the subband corresponding to its control channel, and feeds back CSI;
  • the double-layer codeword corresponding to the PMI is
  • the base station side determines a precoding vector of each control channel.
  • the base station directly adopts W 1 ⁇ 1 ⁇ as a precoding vector of the control channel.
  • the base station randomly uses W 8 ⁇ 2 ⁇ as the precoding vector of the control channel for terminal 2.
  • the base station is randomly used by terminal 3.
  • W 8 ⁇ 2 ⁇ is The second vector in the codeword, for The third vector in the codeword.
  • the application scenario of this application embodiment is as follows: the base station side has 4 antenna ports, and the codebook is as shown in FIG. 3. Within a cell, multiple terminals (including terminal 1, terminal 2, and terminal 3) are configured in a closed loop transmission mode.
  • the base station configures, by using the high layer signaling, a vector of the additional information bit feedback codeword as the precoding vector of the control channel, that is, the first information is not empty.
  • the step of the base station determining the precoding vector of the control channel of each terminal includes:
  • each terminal feeds back CSI to the base station
  • the terminal 1 performs channel measurement on the subband corresponding to its control channel, and feeds back CSI;
  • the terminal 2 performs channel measurement on the subband corresponding to its control channel, and feeds back CSI;
  • the PMI occupies 4 bits, specifically 1000.
  • the double-layer codeword corresponding to the PMI is at the same time, for the single-stream precoding scheme of the control channel, the first vector in the codeword, that is, W 8 ⁇ 1 ⁇ , has the best performance. Therefore, according to the indication of the received high-layer signaling, an additional 1 bit indication is required, and the specific design is 0. That is, the bit information that the terminal 2 feeds back to the PMI is 10000.
  • the terminal 3 performs channel measurement on the subband corresponding to its control channel, and feeds back CSI;
  • the PMI occupies 4 bits, specifically 1100.
  • the double-layer codeword corresponding to the PMI is Meanwhile, for the control channel single-stream precoding scheme, the second vector in the codeword is The performance is optimal. Therefore, according to the indication of the received high-layer signaling, an additional 2-bit indication is required.
  • the specific design is 01, that is, the bit information of the terminal 3 for the PMI feedback is 110001.
  • the base station side determines a precoding vector of each control channel.
  • the base station directly adopts W 1 ⁇ 1 ⁇ as a precoding vector of the control channel.
  • the base station determines the precoding vector of the control channel according to the bit information fed back for the PMI, that is, the last one bit of 10000.
  • the base station determines the precoding vector of the control channel according to the bit information fed back for the PMI, that is, the last 2 bits of the determination of 110001.
  • the second vector in the codeword ie
  • W 8 ⁇ 1 ⁇ is the first precoding vector in the W 8 ⁇ 1, 2 ⁇ codeword, for The second vector in the codeword.
  • a subband corresponds to part or all of the control channel bandwidth, perform unified PMI feedback on the data channel and the control channel of the subband;
  • the base station side can directly adopt the data channel PMI as the PMI of the control channel corresponding to the subband.
  • a vector based on a fixed position or a random position in the multi-stream codeword may be selected as the controlled precoding vector; or
  • the base station can indicate whether the feedback mode of the current terminal requires extra bits by means of high layer signaling.
  • an embodiment of the present disclosure provides a PMI-based processing device, which is disposed in a terminal. As shown in FIG. 6, the device includes:
  • a measuring module 61 configured to perform channel measurement on the sub-band
  • a feedback module 62 configured to feed back CSI to the base station
  • the fed back PMI and the first information indicate a precoding matrix of the subband data channel and a precoding vector of the subband control channel.
  • the data channel transmits data using a multi-stream precoding method.
  • the PMI fed back by the feedback module 62 is the PMI of the data channel, that is, the PMI of the data channel is directly used by the base station as the PMI of the control channel.
  • the transmission of data and control information adopts a closed loop transmission mode.
  • an extra bit of the PMI of the data channel may be unnecessary, and a vector of a fixed position or a random position in the multi-stream codeword indicated by the PMI of the data channel is selected as the precoding vector of the control channel. It may also be desirable to feed back additional information bits in addition to the PMI of the data channel to indicate that one of the multi-layer codewords is fed back as a precoding vector of the control channel, which can effectively support unified precoding of the data channel and the control channel. Designed to reduce the number of signaling flows and feedback bits.
  • the feedback module 62 is specifically configured to feed back the PMI and the first information in one of the following ways:
  • Transmitting a PMI of the subband data channel feeding back a first information that is empty; a PMI of the subband data channel indicating a precoding matrix of a subband data channel; and a vector or random location of a fixed position in the precoding matrix
  • the vector is used by the base station to determine a precoding vector of the subband control channel;
  • the first information can independently indicate a precoding vector of the subband control channel; or the first information and The PMI of the subband data channel jointly indicates a precoding vector of the subband control channel.
  • the base station and the terminal may pre-determine which one of the above two manners is used to implement the indication of the precoding vector of the subband control channel.
  • a PMI of the subband data channel indicates a code in a codebook. a word; the first information indicating a precoding vector of a particular location in the codeword.
  • the base station can configure which manner the terminal uses to feed back the PMI and the first information through the high layer signaling.
  • the apparatus may further include: a receiving and parsing unit, configured to:
  • the feedback unit 62 feeds back the PMI and the first information according to the obtained manner.
  • the PMI-based processing device provided by the foregoing embodiment is only illustrated by the division of each of the foregoing program modules when performing PMI processing. In actual applications, the foregoing processing may be allocated to different program modules according to requirements. Upon completion, the internal structure of the device is divided into different program modules to perform all or part of the processing described above.
  • the measurement module 61, the feedback module 62, the receiving and parsing module may be implemented by a processor in a PMI-based processing device in conjunction with a communication interface.
  • the embodiment of the present disclosure further provides a PMI-based processing device, which is disposed at a base station, as shown in FIG. 7, the device includes:
  • the receiving unit 71 is configured to receive CSI of the subband fed back by the terminal; the bandwidth of the subband corresponds to part or all of the control channel bandwidth;
  • the parsing unit 72 is configured to parse the CSI to obtain a PMI and first information.
  • a determining unit 73 configured to determine, by using the PMI and the first information, a precoding matrix of the subband data channel and a precoding vector of the subband control channel; the subband data channel is transmitted by using a multi-stream precoding method data.
  • the determining unit 73 directly uses the PMI of the subband data channel as the PMI of the subband control channel.
  • the transmission of data and control information adopts a closed loop transmission mode.
  • the determining unit 73 is specifically configured to:
  • the determining unit 73 may also be desirable to feed back additional information bits in addition to the PMI of the data channel to indicate a precoding vector of the feedback multi-layer codeword as a precoding vector for the control channel, based on which, in some embodiments, the determining unit 73, specifically for:
  • a message determines a precoding vector of the subband control channel.
  • the base station can determine the precoding matrix of the subband data channel and the precoding of the subband control channel by one of the above two manners.
  • the base station can configure which way the terminal feeds back the PMI and the first information through higher layer signaling.
  • the device may further include:
  • an indication unit configured to: before receiving the CSI of the subband fed back by the terminal, indicate, by using RRC signaling or system information, a feedback manner of the PMI and the first information to the terminal.
  • the determining unit 73 may independently determine a precoding vector of the subband control channel by using the first information when determining, by using the first information, a manner of determining a precoding vector of the subband control channel; The determining unit 73 jointly determines the precoding vector of the subband control channel by using the first information and the PMI of the subband data channel.
  • the determining unit 73 when the first information and the PMI of the subband data channel jointly indicate a precoding vector of the subband control channel, the determining unit 73 utilizes the subband data channel.
  • PMI determining the codeword in a codebook
  • the determining unit 73 uses a precoding vector of a specific position in the codeword indicated by the first information as a precoding vector of the subband control channel.
  • the PMI-based processing device provided by the foregoing embodiment is only illustrated by the division of each of the foregoing program modules when performing PMI processing. In actual applications, the foregoing processing may be allocated to different program modules according to requirements. Upon completion, the internal structure of the device is divided into different program modules to perform all or part of the processing described above.
  • the receiving unit 71 and the indicating unit may be implemented by a processor in a PMI-based processing device in conjunction with a communication interface; the parsing unit 72 and the determining unit 73 may be implemented by a processor in a PMI-based processing device.
  • the embodiment of the present disclosure further provides a terminal.
  • the terminal 80 includes:
  • the first communication interface 81 is capable of performing information interaction with the base station
  • the first processor 82 is connected to the first communication interface to implement information interaction with the base station, and is used to execute the method provided by one or more technical solutions on the terminal side when the computer program is run.
  • the first processor 82 is configured to perform channel measurement on the subband.
  • a first communication interface 81 configured to feed back CSI to the base station
  • the fed back PMI and the first information indicate a precoding matrix of the subband data channel and a precoding vector of the subband control channel.
  • the data channel transmits data using a multi-stream precoding method.
  • the manner in which the first communication interface 81 feeds back the PMI and the first information includes one of the following:
  • Transmitting a PMI of the subband data channel feeding back a first information that is empty; a PMI of the subband data channel indicating a precoding matrix of a subband data channel; and a vector or random location of a fixed position in the precoding matrix
  • the vector is used by the base station to determine a precoding vector of the subband control channel;
  • the first communication interface 81 is further configured to receive radio resource control RRC signaling or system information sent by the base station;
  • the first processor 82 is further configured to parse the RRC signaling or system information to obtain a feedback manner of the PMI and the first information.
  • the first communication interface 81 feeds back the PMI and the first information according to the obtained manner.
  • the terminal may further include:
  • bus system 85 is used to implement connection communication between these components.
  • the bus system 85 includes a power bus, a control bus, and a status signal bus in addition to the data bus.
  • various buses are labeled as bus system 85 in FIG.
  • the user interface 84 may include a display, a keyboard, a mouse, a trackball, a click wheel, a button, a button, a touch panel, or a touch screen.
  • the first memory 83 in the embodiment of the present disclosure is used to store various types of data to support the operation of the terminal 80.
  • the terminal side method disclosed in the above embodiments of the present disclosure may be applied to the first processor 82 or implemented by the first processor 82.
  • the first processor 82 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the first processor 82 or an instruction in a form of software.
  • the first processor 82 described above may be a general purpose processor, a digital signal processor (DSP), or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, or the like.
  • DSP digital signal processor
  • the first processor 82 can implement or perform the various methods, steps, and logic blocks disclosed in the embodiments of the present disclosure.
  • a general purpose processor can be a microprocessor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present disclosure may be directly implemented as a hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a storage medium located in the first memory 83, and the first processor 82 reads the information in the first memory 83 and, in conjunction with its hardware, performs the steps of the foregoing method.
  • the terminal 80 may be configured by one or more Application Specific Integrated Circuits (ASICs), DSPs, Programmable Logic Devices (PLDs), and Complex Programmable Logic Devices (CPLDs). Complex Programmable Logic Device), Field-Programmable Gate Array (FPGA), General Purpose Processor, Controller, Micro Controller Unit (MCU), Microprocessor, or other electronic components Implemented to perform the aforementioned method.
  • ASICs Application Specific Integrated Circuits
  • DSPs Programmable Logic Devices
  • PLDs Programmable Logic Devices
  • CPLDs Complex Programmable Logic Device
  • FPGA Field-Programmable Gate Array
  • MCU Micro Controller Unit
  • Microprocessor or other electronic components Implemented to perform the aforementioned method.
  • the embodiment of the present disclosure further provides a base station.
  • the base station 90 includes:
  • the second communication interface 91 is capable of performing information interaction with the base station
  • the second processor 92 is connected to the first communication interface to implement information interaction with the base station, and is configured to perform the method provided by one or more technical solutions on the terminal side when the computer program is run.
  • the second communication interface 91 is configured to receive CSI of the subband fed back by the terminal; the bandwidth of the subband corresponds to part or all of the control channel bandwidth;
  • the second processor 92 is configured to parse the CSI to obtain a PMI and first information, and determine, by using the PMI and the first information, a precoding matrix of the subband data channel and a preamble of the subband control channel. a coding vector; the subband data channel transmits data using a multi-stream precoding method.
  • the second processor 92 is specifically configured to perform one of the following operations:
  • Determining a precoding matrix of the subband data channel by using a PMI of the subband data channel when the PMI is a PMI of the subband data channel and the first information is empty; and the subband a vector of a fixed position or a random position in a precoding matrix corresponding to a PMI of the data channel as a precoding vector of the subband control channel;
  • a message determines a precoding vector of the subband control channel.
  • the second processor 92 is configured to perform one of the following operations:
  • the second processor 92 is specifically configured to:
  • the second communication interface 91 is further configured to: before receiving the CSI of the subband fed back by the terminal, indicate, by using RRC signaling or system information, a feedback manner of the PMI and the first information to the terminal.
  • the second processor 92 is further configured to: when the subband data channel transmits data by using a single stream precoding manner, directly use the PMI of the subband data channel as the subband The PMI of the control channel.
  • the terminal may further include:
  • a second memory 93 the computer program being stored on the second memory 93.
  • bus system 94 the various components in the base station 90 are coupled together by a bus system 94. It will be appreciated that the bus system 94 is used to effect connection communication between these components.
  • the bus system 94 includes, in addition to the data bus, a power bus, a control bus, and a status signal bus. However, for clarity of description, various buses are labeled as bus system 94 in FIG.
  • the second memory 93 in the disclosed embodiment is for storing various types of data to support the operation of the base station 90.
  • the method disclosed in the above embodiments of the present disclosure may be applied to the second processor 92 or implemented by the second processor 92.
  • the second processor 92 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the second processor 92 or an instruction in a form of software.
  • the second processor 92 described above may be a general purpose processor, a DSP, or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, or the like.
  • the second processor 92 can implement or perform the various methods, steps, and logic blocks disclosed in the embodiments of the present disclosure.
  • a general purpose processor can be a microprocessor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present disclosure may be directly implemented as a hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a storage medium located in the second memory 93, and the second processor 92 reads the information in the second memory 93, in conjunction with its hardware, to perform the steps of the foregoing method.
  • base station 90 may be implemented by one or more ASICs, DSPs, PLDs, CPLDs, FPGAs, general purpose processors, controllers, MCUs, Microprocessors, or other electronic components for performing the aforementioned methods.
  • the memory (such as the first memory 83 and the second memory 93) in the embodiments of the present disclosure may be a volatile memory or a non-volatile memory, and may also include both volatile and non-volatile memory.
  • the non-volatile memory may be a Read Only Memory (ROM), a Programmable Read-Only Memory (PROM), or an Erasable Programmable Read (EPROM). Only Memory), Electrically Erasable Programmable Read-Only Memory (EEPROM), ferromagnetic random access memory (FRAM), flash memory, magnetic surface memory , CD-ROM, or Compact Disc Read-Only Memory (CD-ROM); the magnetic surface memory can be a disk storage or a tape storage.
  • the volatile memory can be a random access memory (RAM) that acts as an external cache.
  • RAM random access memory
  • many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access (SSRAM).
  • DRAM Dynanamic Random Access Memory
  • SDRAM Synchronous Dynamic Random Access Memory
  • DDRSDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • ESDRAM Enhance Enhanced Synchronous Dynamic Random Access Memory
  • SLDRAM Synchronous Dynamic Random Access Memory
  • DRRAM Direct Memory Bus Random Access Memory
  • the memories described in the embodiments of the present disclosure are intended to include, but are not limited to, these and any other suitable types of memory.
  • an embodiment of the present disclosure further provides a computer readable storage medium, for example, including a first memory 83 storing a computer program, and the computer program stored on the first memory 83 may be a first processor of the terminal 80 82 is executed to complete the steps described in the aforementioned terminal side method; further comprising a second memory 93 storing a computer program, the computer program stored on the second memory 93 being executable by the second processor 92 of the base station 90 to complete the aforementioned base station The method of the side method.
  • the computer readable storage medium may be a memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disk, or CD-ROM; One or any combination of various devices.
  • an embodiment of the present disclosure further provides a PMI-based processing system. As shown in FIG. 10, the system includes:
  • the terminal 101 is configured to perform channel measurement on the sub-band and feed back CSI to the base station 102.
  • the CSI is fed back, when the bandwidth of the sub-band corresponds to part or all of the control channel bandwidth, the PMI and the first information indication are fed back.
  • the base station 102 is configured to receive CSI of the subband of the terminal feedback 101; parse the CSI to obtain the fed back PMI and the first information; and determine the precoding of the subband data channel by using the feedback PMI and the first information.

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Abstract

本公开公开了一种基于预编码矩阵指示(PMI)的处理方法,包括:对子带进行信道测量并向基站反馈信道状态信息(CSI);其中,在反馈CSI时,当所述子带的带宽对应部分或全部控制信道带宽时,反馈的PMI和第一信息指示所述子带数据信道的预编码矩阵和所述子带控制信道的预编码向量;所述数据信道采用多流预编码方式传输数据。本公开同时还公开了一种基于PMI的处理装置、终端、基站及计算机可读存储介质。

Description

基于PMI的处理方法、装置、相关设备及存储介质
相关申请的交叉引用
本申请主张在2017年8月1日在中国提交的中国专利申请号No.201710647781.7的优先权,其全部内容通过引用包含于此。
技术领域
本公开涉及无线通信领域,尤其涉及一种基于预编码矩阵指示(PMI,Precoding Matrix Index)的处理方法、装置、终端、基站及计算机可读存储介质。
背景技术
在长期演进(LTE,Long Term Evolution)系统中,物理层控制信道采用固定的传输分集方案,而数据信道可以采用多种传输模式,包括:传输模式1到传输模式10。其中,在传输模式1到传输模式10中有多种闭环传输模式,例如传输模式4:闭环空间复用,传输模式5:MU-MIMO,传输模式6单层闭环MIMO等。这些闭环传输模式中,均需要终端反馈信道状态信息(CSI,Channel State Information),然后基站基于反馈的CSI进行相应传输模式配置。
为了下行控制信道覆盖增强,考虑在第五代移动通信技术(5G)新空口采用单层波束赋形的传输模式,可以有效提升覆盖性能。为了支持闭环单层预编码方案,控制信道也需要PMI信息。
为了支持控制信道的闭环单层预编码方案,一种方案是直接采用某一子带的数据信道的PMI作为对应子带的控制信道的PMI。但是,这种方案中,如果终端反馈的是多层码字的指示,则数据信道的PMI不能直接作为对一个子带的控制信道的PMI。
因此,在控制信道支持闭环单层预编码方案的情况下如何实现控制信道的PMI反馈是本公开主要解决的问题。
发明内容
为解决相关技术中存在的技术问题,本公开实施例提供一种基于PMI的处理方法、装置、终端、基站及计算机可读存储介质。
本公开实施例的技术方案是这样实现的:
本公开实施例提供了一种基于PMI的处理方法,包括:
对子带进行信道测量并向基站反馈CSI;其中,
在反馈CSI时,当所述子带的带宽对应部分或全部控制信道带宽时,反馈的PMI和第一信息指示所述子带数据信道的预编码矩阵和所述子带控制信道的预编码向量;所述数据信道采用多流预编码方式传输数据。
上述方案中,反馈PMI和第一信息的方式包括以下之一:
反馈所述子带数据信道的PMI,反馈第一信息为空;所述子带数据信道的PMI指示子带数据信道的预编码矩阵;且所述预编码矩阵中的固定位置的向量或随机位置的向量用于供基站确定所述子带控制信道的预编码向量;
反馈所述子带数据信道的PMI,且反馈第一信息不为空,所述第一信息用于供基站确定所述子带控制信道的预编码向量。
上述方案中,所述方法还包括:
接收基站发送的无线资源控制(RRC)信令或系统信息;
解析所述RRC信令或系统信息,得到PMI及第一信息的反馈方式;
相应地,根据得到的方式反馈PMI及第一信息。
上述方案中,反馈所述子带数据信道的PMI,且反馈第一信息不为空时,满足以下特征之一:
所述第一信息独立指示所述子带控制信道的预编码向量;
所述第一信息及所述子带数据信道的PMI联合指示所述子带控制信道的预编码向量。
上述方案中,所述第一信息及所述子带数据信道的PMI联合指示所述子 带控制信道的预编码向量时,所述子带数据信道的PMI指示一个码本中的码字;所述第一信息指示所述码字中特定位置的预编码向量。
本公开实施例还提供了一种基于PMI的处理方法,包括:
接收终端反馈的子带的CSI;所述子带的带宽对应部分或全部控制信道带宽;
解析所述CSI,得到PMI和第一信息;利用所述PMI和第一信息确定所述子带数据信道的预编码矩阵和所述子带控制信道的预编码向量;所述子带数据信道采用多流预编码方式传输数据。
上述方案中,利用所述PMI和第一信息确定所述子带数据信道的预编码矩阵和所述子带控制信道的预编码向量的方式包括以下之一:
当所述PMI为所述子带数据信道的PMI且所述第一信息为空时,利用所述子带数据信道的PMI确定所述子带数据信道的预编码矩阵;并将所述子带数据信道的PMI对应的预编码矩阵中的固定位置或随机位置的向量作为所述子带控制信道的预编码向量;
当所述PMI为所述子带数据信道的PMI且所述第一信息不为空时,利用所述子带数据信道的PMI确定所述子带数据信道的预编码矩阵;并利用所述第一信息确定所述子带控制信道的预编码向量。
上述方案中,所述利用所述第一信息确定所述子带控制信道的预编码向量的方式包括以下方式之一:
利用所述第一信息独立确定所述子带控制信道的预编码向量;
利用所述第一信息及所述子带数据信道的PMI联合确定所述子带控制信道的预编码向量。
上述方案中,所述利用所述第一信息及所述子带数据信道的PMI联合确定所述子带控制信道的预编码向量,包括:
利用所述子带数据信道的PMI,确定一个码本中的码字;
将所述第一信息指示的所述码字中特定位置的预编码向量,作为所述子 带控制信道的预编码向量。
上述方案中,所述接收终端反馈的子带的CSI之前,所述方法还包括:
通过RRC信令或系统信息将PMI和第一信息的反馈方式指示给所述终端。
上述方案中,所述方法还包括:
当所述子带数据信道采用单流预编码方式传输数据时,将所述子带数据信道的PMI直接作为所述子带控制信道的PMI。
本公开实施例又提供了一种基于PMI的处理装置,包括:
测量模块,用于对子带进行信道测量;
反馈模块,用于向基站反馈CSI;其中,
在反馈CSI时,当所述子带的带宽对应部分或全部控制信道带宽时,反馈的PMI和第一信息指示所述子带数据信道的预编码矩阵和所述子带控制信道的预编码向量;所述数据信道采用多流预编码方式传输数据。
本公开实施例还提供了一种基于PMI的处理装置,包括:
接收单元,用于接收终端反馈的子带的CSI;所述子带的带宽对应部分或全部控制信道带宽;
解析单元,用于解析所述CSI,得到PMI和第一信息;
确定单元,用于利用所述PMI和第一信息确定所述子带数据信道的预编码矩阵和所述子带控制信道的预编码向量;所述子带数据信道采用多流预编码方式传输数据。
本公开实施例又提供了一种终端,包括:
第一处理器,用于对子带进行信道测量;
第一通信接口,用于向基站反馈CSI;其中,
在反馈CSI时,当所述子带的带宽对应部分或全部控制信道带宽时,反馈的PMI和第一信息指示所述子带数据信道的预编码矩阵和所述子带控制信道的预编码向量;所述数据信道采用多流预编码方式传输数据。
上述方案中,所述第一通信接口反馈PMI和第一信息的方式包括以下之一:
反馈所述子带数据信道的PMI,反馈第一信息为空;所述子带数据信道的PMI指示子带数据信道的预编码矩阵;且所述预编码矩阵中的固定位置的向量或随机位置的向量用于供基站确定所述子带控制信道的预编码向量;
反馈所述子带数据信道的PMI,且反馈第一信息不为空,所述第一信息用于供基站确定所述子带控制信道的预编码向量。
上述方案中,所述第一通信接口,还用于接收基站发送的无线资源控制RRC信令或系统信息;
所述第一处理器,还用于解析所述RRC信令或系统信息,得到PMI及第一信息的反馈方式;
相应地,所述第一通信接口根据得到的方式反馈PMI及第一信息。
本公开实施例还提供了一种基站,包括:
第二通信接口,用于接收终端反馈的子带的CSI;所述子带的带宽对应部分或全部控制信道带宽;
第二处理器,用于解析所述CSI,得到PMI和第一信息;利用所述PMI和第一信息确定所述子带数据信道的预编码矩阵和所述子带控制信道的预编码向量;所述子带数据信道采用多流预编码方式传输数据。
上述方案中,所述第二处理器,具体用于执行以下操作之一:
当所述PMI为所述子带数据信道的PMI且所述第一信息为空时,利用所述子带数据信道的PMI确定所述子带数据信道的预编码矩阵;并将所述子带数据信道的PMI对应的预编码矩阵中的固定位置或随机位置的向量作为所述子带控制信道的预编码向量;
当所述PMI为所述子带数据信道的PMI且所述第一信息不为空时,利用所述子带数据信道的PMI确定所述子带数据信道的预编码矩阵;并利用所述第一信息确定所述子带控制信道的预编码向量。
上述方案中,所述第二处理器,用于执行以下操作之一:
利用所述第一信息独立确定所述子带控制信道的预编码向量;
利用所述第一信息及所述子带数据信道的PMI联合确定所述子带控制信道的预编码向量。
上述方案中,所述第二处理器,具体用于:
利用所述子带数据信道的PMI,确定一个码本中的码字;
将所述第一信息指示的所述码字中特定位置的预编码向量,作为所述子带控制信道的预编码向量。
上述方案中,所述第二通信接口,还用于接收终端反馈的子带的CSI之前,通过RRC信令或系统信息将PMI和第一信息的反馈方式指示给所述终端。
上述方案中,所述第二处理器,还用于:
当所述子带数据信道采用单流预编码方式传输数据时,将所述子带数据信道的PMI直接作为所述子带控制信道的PMI。
本公开实施例又提供了一种终端,所述终端包括:第一处理器、第一存储器及存储在所述第一存储器上并能够在所述第一处理器上运行的计算机程序;
其中,所述第一处理器用于运行所述计算机程序时,执行终端侧任一方法的步骤。
本公开实施例还提供了一种基站,包括:第二处理器、第二存储器及存储在所述第二存储器上并能够在所述第二处理器上运行的计算机程序;
其中,所述第二处理器用于运行所述计算机程序时,执行基站侧任一方法的步骤。
本公开实施例又提供了一种计算机可读存储介质,其上存储有计算机程序,所述计算机程序被处理器执行时实现终端侧任一方法的步骤,或者实现基站侧任一方法的步骤。
本公开实施例提供的基于PMI的处理方法、装置、终端、基站及计算机可读存储介质,当数据信道采用多流预编码方式传输时,在反馈CSI时,反馈了PMI和第一信息,用反馈的PMI和第一信息指示所述子带数据信道的预编码矩阵和所述子带控制信道的预编码向量,实现了控制信道PMI的反馈,如此,能够支撑控制信道单流预编码传输模式,从而能有效地提升下行控制信道的覆盖性能,提升控制信息传输的可靠性。
附图说明
在附图(其不一定是按比例绘制的)中,相似的附图标记可在不同的视图中描述相似的部件。附图以示例而非限制的方式大体示出了本文中所讨论的各个实施例。
图1为本公开实施例终端侧基于PMI的处理方法流程示意图;
图2为本公开实施例2天线端口对应的码本示意图;
图3为本公开实施例4天线端口对应的码本示意图;
图4为本公开实施例基站侧基于PMI的处理方法流程示意图;
图5为本公开实施例基于PMI的处理方法流程示意图;
图6为本公开实施例一种基于PMI的处理装置结构示意图;
图7为本公开实施例另一种基于PMI的处理装置结构示意图;
图8为本公开实施例终端结构示意图;
图9为本公开实施例基站结构示意图;
图10为本公开实施例侧基于PMI的处理系统结构示意图。
具体实施方式
下面结合附图及实施例对本公开再作进一步详细的描述。
为了支持控制信道的闭环单层预编码方案,一种方案是直接采用某一子带的数据信道的PMI作为对应子带的控制信道的PMI。当数据信道采用单流 预编码方案时,可以直接使用这种方案。但是,当终端反馈的是多层码字的指示,即数据信道采用多流预编码方式时,则不能够直接用于控制信道的单层传输,即不能直接将数据信道的PMI直接作为对应子带的控制信道的PMI。
基于此,在本公开的各种实施例中:终端向基站反馈CSI时,当子带的带宽对应部分或全部控制信道带宽时,反馈的PMI和第一信息指示所述子带数据信道的预编码矩阵和所述子带控制信道的预编码向量;所述数据信道采用多流预编码方式传输数据;而基站内解析终端反馈的子带的CSI,得到PMI和第一信息;利用所述PMI和第一信息确定所述子带数据信道的预编码矩阵和所述子带控制信道的预编码向量。
本公开实施例提供的方案,可以理解为通过数据信道PMI来指示控制信道预编码的方案,当数据信道采用多流预编码方式传输时,在反馈CSI时,反馈了PMI和第一信息,用反馈的PMI和第一信息指示所述子带数据信道的预编码矩阵和所述子带控制信道的预编码向量,从而实现了控制信道PMI的反馈,如此,能够支撑控制信道单流预编码传输模式,从而能有效地提升下行控制信道的覆盖性能,提升控制信息传输的可靠性。
本公开实施例提供了一种基于PMI的处理方法,应用于终端,如图1所示,该方法包括:
步骤101:对子带进行信道测量;
步骤102:向基站反馈CSI。
其中,在反馈CSI时,当所述子带的带宽对应部分或全部控制信道带宽时,反馈的PMI和第一信息指示所述子带数据信道的预编码矩阵和所述子带控制信道的预编码向量;所述数据信道采用多流预编码方式传输数据。
需要说明的是:当数据信道单流预编码方式传输数据时,所述终端反馈的PMI为所述数据信道的PMI,也就是说,基站采用数据信道的PMI直接作为控制信道的PMI。
本公开实施例提供的方案,数据和控制信息的传输采用闭环传输模式。
基站基于终端反馈的CSI进行相应的传输模式的配置。具体地,CSI包括:信道质量指示(CQI,Channel Quality Index)、秩指示(RI,Rand Index),PMI,及预编码类型指示(PTI,Precoding Type Index)等。其中,PMI与RI和天线端口数有直接对应关系,举个例子来说,RI为1,PMI对应的是单层码本中一个码字的指示;RI=2,PMI对应的是双层码本中一个码字的指示;RI=4/8,PMI对应的是4/8层码本中的一个码本;等等。2天线端口对应的码本和4天线对应的码本分别如图2和图3所示。
基于PMI与RI和天线端口数有直接对应关系,在本公开实施例中,在反馈的CSI中,当RI=1时(表明数据信道采用单流预编码方式传输数据),基站侧可以直接采用数据信道PMI作为对应子带的控制信道的PMI;当RI>=2(表明数据信道采用多流预编码方式传输数据)时,采用PMI和第一信息来指示所述子带数据信道的预编码矩阵和所述子带控制信道的预编码向量。
这里,实际应用时,可以不需要除数据信道的PMI的额外比特,选用数据信道的PMI所指示的多流码字中的固定位置或随机位置的一个向量作为控制信道的预编码向量。
基于此,在一些实施例中,反馈PMI和第一信息的方式可以是:
反馈所述子带数据信道的PMI,反馈第一信息为空;所述子带数据信道的PMI指示子带数据信道的预编码矩阵;且所述预编码矩阵中的固定位置的向量或随机位置的向量用于供基站确定所述子带控制信道的预编码向量。
也可以需要反馈除数据信道的PMI外的额外的信息比特,以指示反馈多层码字中的一个预编码向量作为控制信道的预编码向量,这样可以有效支持数据信道和控制信道统一的预编码设计,从而能够减少信令流程和反馈比特数目。
基于此,在一些实施例中,反馈PMI和第一信息的方式可以是:
反馈所述子带数据信道的PMI,且反馈第一信息不为空,所述第一信息用于供基站确定所述子带控制信道的预编码向量。
这里,当反馈所述子带数据信道的PMI,且反馈第一信息不为空时,所述第一信息能够独立指示所述子带控制信道的预编码向量;或者,所述第一信息及所述子带数据信道的PMI联合指示所述子带控制信道的预编码向量。
其中,实际应用时,基站和终端可以事先约定具体采用上述两种方式中的哪种方式来实现所述子带控制信道的预编码向量的指示。
在一些实施例中,当所述第一信息及所述子带数据信道的PMI联合指示所述子带控制信道的预编码向量时,所述子带数据信道的PMI指示一个码本中的码字;所述第一信息指示所述码字中特定位置的预编码向量。
由于有两种反馈PMI和第一信息的方式,所以实际应用时,当终端支持两种反馈的方式时,基站可以通过高层信令配置终端采用哪种方式反馈PMI和第一信息。
基于此,在一些实施例中,该方法还可以包括:
接收基站发送的RRC信令或系统信息;
解析所述RRC信令或系统信息,得到PMI及第一信息的反馈方式;
相应地,在反馈CSI时,根据得到的方式反馈PMI及第一信息。
当然,当终端只支持一种反馈方式时,则采用自身支持的反馈方式反馈PMI和第一信息。
基站需要基于终端反馈的CSI进行相应的处理,基于此,本公开实施例还提供了一种基于PMI的处理方法,应用于基站,如图4所示,该方法包括:
步骤401:接收终端反馈的子带的CSI;
这里,所述子带的带宽对应部分或全部控制信道带宽。
步骤402:解析所述CSI,得到PMI和第一信息;
步骤403:利用所述PMI和第一信息确定所述子带数据信道的预编码矩 阵和所述子带控制信道的预编码向量。
其中,所述子带数据信道采用多流预编码方式传输数据。
这里,实际应用时,当所述子带数据信道采用单流预编码方式传输数据时,所述基站将所述子带数据信道的PMI直接作为所述子带控制信道的PMI。
本公开实施例提供的方案,数据和控制信息的传输采用闭环传输模式。
如前所述,基站基于终端反馈的CSI进行相应的传输模式的配置,在配置传输模式时,需要确定子带数据信道的预编码矩阵和所述子带控制信道的预编码向量。
其中,在确定控制信道的预编码向量时,当RI=1时(表明数据信道采用单流预编码方式传输数据),基站侧可以直接采用数据信道PMI作为对应子带的控制信道的PMI;当RI>=2(表明数据信道采用多流预编码方式传输数据)时,采用PMI和第一信息来指示所述子带数据信道的预编码矩阵和所述子带控制信道的预编码向量。
这里,实际应用时,当选用数据信道的PMI所指示的多流码字中的固定位置或随机位置的一个向量作为控制信道的预编码向量,即解析得到的所述PMI为所述子带数据信道的PMI且所述第一信息为空时,可以通过以下方式确定所述子带数据信道的预编码矩阵和所述子带控制信道的预编码向量:
利用所述子带数据信道的PMI确定所述子带数据信道的预编码矩阵;并将所述子带数据信道的PMI对应的预编码矩阵中的固定位置或随机位置的向量作为所述子带控制信道的预编码向量。
也可以需要反馈除数据信道的PMI外的额外的信息比特,以指示反馈多层码字中的一个预编码向量作为控制信道的预编码向量,即当所述PMI为所述子带数据信道的PMI且所述第一信息不为空时,利用所述子带数据信道的PMI确定所述子带数据信道的预编码矩阵;并利用所述第一信息确定所述子带控制信道的预编码向量。
由于有两种反馈PMI和第一信息的方式,也就是说,基站可以通过上述 两种方式中的一种方式确定所述子带数据信道的预编码矩阵和所述子带控制信道的预编码向量,所以实际应用时,当终端支持两种反馈的方式时,基站可以通过高层信令配置终端采用哪种方式反馈PMI和第一信息。
基于此,在一些实施例中,所述接收终端反馈的子带的CSI之前,即在执行步骤401之前,该方法还可以包括:
通过RRC信令或系统信息将PMI和第一信息的反馈方式指示给所述终端。
其中,利用所述第一信息确定所述子带控制信道的预编码向量的方式时,基站可以利用所述第一信息独立确定所述子带控制信道的预编码向量;或者利用所述第一信息及所述子带数据信道的PMI联合确定所述子带控制信道的预编码向量。
这里,实际应用时,基站和终端可以事先约定具体采用上述两种方式中的哪种方式来实现所述子带控制信道的预编码向量的指示。所以基站可以基于约定的指示方式利用所述第一信息确定所述子带控制信道的预编码向量。
其中,在一些实施例中,当所述第一信息及所述子带数据信道的PMI联合指示所述子带控制信道的预编码向量时,所述基站利用利用所述子带数据信道的PMI,确定一个码本中的码字;
所述基站将所述第一信息指示的所述码字中特定位置的预编码向量,作为所述子带控制信道的预编码向量。
本公开实施例还提供了一种基于PMI的处理方法,如图5所示,该方法包括;
步骤501:终端对子带进行信道测量并向基站反馈CSI;
其中,在反馈CSI时,当所述子带的带宽对应部分或全部控制信道带宽时,反馈的PMI和第一信息指示所述子带数据信道的预编码矩阵和所述子带控制信道的预编码向量;所述数据信道采用多流预编码方式传输数据。
步骤502:所述基站接收终端反馈的子带的CSI;
步骤503:所述基站解析所述CSI,得到反馈的PMI和第一信息;
步骤504:所述基站利用所述反馈的PMI和第一信息确定所述子带数据信道的预编码矩阵和所述子带控制信道的预编码向量。
需要说明的是:终端和基站的具体处理过程已在上文详述,这里不再赘述。
本公开实施例提供的基于PMI的处理方法,当数据信道采用多流预编码方式传输时,在反馈CSI时,反馈了PMI和第一信息,用反馈的PMI和第一信息指示所述子带数据信道的预编码矩阵和所述子带控制信道的预编码向量,实现了控制信道PMI的反馈,如此,能够支撑控制信道单流预编码传输模式,从而能有效地提升下行控制信道的覆盖性能,提升控制信息传输的可靠性。
下面结合应用实施例对本公开的方案再进行详细的描述。
应用实施例一
本应用实施例的应用场景是:基站侧有4天线端口,码本如图3所示。一个小区内,多个终端(包括终端1、终端2及终端3)配置为闭环传输模式。
在本应用实施例中,基站侧固定选用反馈码字中的第一个向量作为控制信道的预编码向量。
基站确定各终端的控制信道的预编码向量的步骤包括:
首先,各终端向基站反馈CSI;
具体地,终端1对其控制信道对应的子带进行信道测量,并反馈CSI;
其中,在反馈的CSI中,RI=1,PMI占用4比特,具体为0001,结合图3所示的码本,PMI对应的单层码字为W 1 {1}=[1–j 1 j]。
终端2对其控制信道对应的子带进行信道测量,并反馈CSI;
其中,在反馈的CSI中,RI=2,PMI占用4比特,具体为1000,结合图3所示的码本,PMI对应的双层码字为
Figure PCTCN2018091027-appb-000001
终端3对其控制信道对应的子带进行信道测量,并反馈CSI;
其中,在反馈的CSI中,RI=3,PMI占用4比特,具体为1100,结合图3所示的码本,PMI对应的双层码字为
Figure PCTCN2018091027-appb-000002
其次,基站侧收到各终端反馈的CSI后,确定各控制信道的预编码向量。
具体地,对于终端1,基站直接采用W 1 {1}作为控制信道的预编码向量。
对于终端2,由于W 8 {1}为W 8 {1,2}码字中的第一个预编码向量,所以采用W 8 {1}作为控制信道的预编码向量。
对于终端3,由于
Figure PCTCN2018091027-appb-000003
Figure PCTCN2018091027-appb-000004
码字中的第一个预编码向量,所以采用
Figure PCTCN2018091027-appb-000005
作为控制信道的预编码向量。
应用实施例二
本应用实施例的应用场景是:基站侧有4天线端口,码本如图3所示。一个小区内,多个终端(包括终端1、终端2及终端3)配置为闭环传输模式。
在本应用实施例中,基站侧随机选用反馈码字中的一个向量作为控制信道的预编码向量。
基站确定各终端的控制信道的预编码向量的步骤包括:
首先,各终端向基站反馈CSI;
具体地,终端1对其控制信道对应的子带进行信道测量,并反馈CSI;
其中,在反馈的CSI中,RI=1,PMI占用4比特,具体为0001,结合图3所示的码本,PMI对应的单层码字为W 1 {1}=[1–j 1 j]。
终端2对其控制信道对应的子带进行信道测量,并反馈CSI;
其中,在反馈的CSI中,RI=2,PMI占用4比特,具体为1000,结合图3所示的码本,PMI对应的双层码字为
Figure PCTCN2018091027-appb-000006
终端3对其控制信道对应的子带进行信道测量,并反馈CSI;
其中,在反馈的CSI中,RI=3,PMI占用4比特,具体为1100,结合图 3所示的码本,PMI对应的双层码字为
Figure PCTCN2018091027-appb-000007
其次,基站侧收到各终端反馈的CSI后,确定各控制信道的预编码向量。
具体地,对于终端1,基站直接采用W 1 {1}作为控制信道的预编码向量。
对于终端2,基站为终端2随机采用W 8 {2}作为控制信道的预编码向量。
对于终端3,基站为终端3随机采用
Figure PCTCN2018091027-appb-000008
作为控制信道的预编码向量。
其中,W 8 {2}
Figure PCTCN2018091027-appb-000009
码字中的第二个向量,
Figure PCTCN2018091027-appb-000010
Figure PCTCN2018091027-appb-000011
码字中的第三个向量。
应用实施例三
本应用实施例的应用场景是:基站侧有4天线端口,码本如图3所示。一个小区内,多个终端(包括终端1、终端2及终端3)配置为闭环传输模式。
在本应用实施例中,基站通过高层信令为终端配置需要采用额外的信息比特反馈码字中的一个向量作为控制信道的预编码向量,即第一信息不为空。
基站确定各终端的控制信道的预编码向量的步骤包括:
首先,各终端向基站反馈CSI;
具体地,终端1对其控制信道对应的子带进行信道测量,并反馈CSI;
其中,在反馈的CSI中,RI=1,PMI占用4比特,具体为0001,结合图3所示的码本,PMI对应的单层码字为W 1 {1}=[1–j 1 j]。
终端2对其控制信道对应的子带进行信道测量,并反馈CSI;
其中,在反馈的CSI中,RI=2,PMI占用4比特,具体为1000,结合图3所示的码本,PMI对应的双层码字为
Figure PCTCN2018091027-appb-000012
同时,针对控制信道单流预编码方案,该码字中的第一个向量即W 8 {1}性能最优,所以根据接收的高层信令的指示,需要额外1比特指示,具体设计为0,即终端2针对PMI反馈的比特信息为10000。
终端3对其控制信道对应的子带进行信道测量,并反馈CSI;
其中,在反馈的CSI中,RI=3,PMI占用4比特,具体为1100,结合图3所示的码本,PMI对应的双层码字为
Figure PCTCN2018091027-appb-000013
同时,针对控制信道单流预编码方案,该码字中的第二个向量即
Figure PCTCN2018091027-appb-000014
性能最优,所以根据接收的高层信令的指示,需要额外2比特指示,具体设计为01,即终端3针对PMI反馈的比特信息为110001。
其次,基站侧收到各终端反馈的CSI后,确定各控制信道的预编码向量。
具体地,对于终端1,基站直接采用W 1 {1}作为控制信道的预编码向量。
对于终端2,基站根据针对PMI反馈的比特信息,即10000的确定最后1比特确定控制信道的预编码向量为
Figure PCTCN2018091027-appb-000015
码字中的第一个向量,即W 8 {1}
对于终端3,基站根据针对PMI反馈的比特信息,即110001的确定最后2比特确定控制信道的预编码向量为
Figure PCTCN2018091027-appb-000016
码字中的第二个向量,即
Figure PCTCN2018091027-appb-000017
其中,W 8 {1}为W 8 {1,2}码字中的第一个预编码向量,
Figure PCTCN2018091027-appb-000018
Figure PCTCN2018091027-appb-000019
码字中的第二个向量。
从应用实施例的方案可以看出,本公开实施例的方案中:
1、如果某子带对应部分或全部控制信道带宽,针对该子带的数据信道和控制信道进行统一的PMI反馈;
2、反馈的CSI中,当RI=1时,基站侧可以直接采用数据信道PMI作为对应子带的控制信道的PMI。
反馈的CSI中,当RI>=2,且没有额外比特反馈指示控制信道的预编码向量时,可选用基于多流码字中的固定位置或随机位置的一个向量作为控制的预编码向量;或者,当RI>=2,且有额外比特反馈指示控制信道的预编码向量时,指示反馈码字中的一个向量作为控制预编码向量指示。
其中,假设反馈额外比特数目为n,RI大小为r,要求:2 n≥r。
3、基站可以通过高层信令的方式指示当前终端的反馈模式是否需要额外比特。
为实现本公开实施例的方法,本公开实施例提供了一种基于PMI的处理装置,设置在终端,如图6所示,所述装置包括:
测量模块61,用于对子带进行信道测量;
反馈模块62,用于向基站反馈CSI;其中,
在反馈CSI时,当所述子带的带宽对应部分或全部控制信道带宽时,反馈的PMI和第一信息指示所述子带数据信道的预编码矩阵和所述子带控制信道的预编码向量;所述数据信道采用多流预编码方式传输数据。
需要说明的是:当数据信道单流预编码方式传输数据时,所述反馈模块62反馈的PMI为所述数据信道的PMI,也就是说,基站采用数据信道的PMI直接作为控制信道的PMI。
本公开实施例提供的方案,数据和控制信息的传输采用闭环传输模式。
这里,实际应用时,可以不需要除数据信道的PMI的额外比特,选用数据信道的PMI所指示的多流码字中的固定位置或随机位置的一个向量作为控制信道的预编码向量。也可以需要反馈除数据信道的PMI外的额外的信息比特,以指示反馈多层码字中的一个预编码向量作为控制信道的预编码向量,这样可以有效支持数据信道和控制信道统一的预编码设计,从而能够减少信令流程和反馈比特数目。
基于此,在一些实施例中,所述反馈模块62,具体用于通过以下方式之一反馈PMI和第一信息:
反馈所述子带数据信道的PMI,反馈第一信息为空;所述子带数据信道的PMI指示子带数据信道的预编码矩阵;且所述预编码矩阵中的固定位置的向量或随机位置的向量用于供基站确定所述子带控制信道的预编码向量;
反馈所述子带数据信道的PMI,且反馈第一信息不为空,所述第一信息用于供基站确定所述子带控制信道的预编码向量。
这里,当反馈所述子带数据信道的PMI,且反馈第一信息不为空时,所 述第一信息能够独立指示所述子带控制信道的预编码向量;或者,所述第一信息及所述子带数据信道的PMI联合指示所述子带控制信道的预编码向量。
其中,实际应用时,基站和终端可以事先约定具体采用上述两种方式中的哪种方式来实现所述子带控制信道的预编码向量的指示。
在一些实施例中,当所述第一信息及所述子带数据信道的PMI联合指示所述子带控制信道的预编码向量时,所述子带数据信道的PMI指示一个码本中的码字;所述第一信息指示所述码字中特定位置的预编码向量。
由于有两种反馈PMI和第一信息的方式,所以实际应用时,当终端支持两种反馈的方式时,基站可以通过高层信令配置终端采用哪种方式反馈PMI和第一信息。
基于此,在一些实施例中,该装置还可以包括:接收及解析单元,用于:
接收基站发送的RRC信令或系统信息;
解析所述RRC信令或系统信息,得到PMI及第一信息的反馈方式;
相应地,所述反馈单元62根据得到的方式反馈PMI及第一信息。
需要说明的是:上述实施例提供的基于PMI的处理装置在进行PMI处理时,仅以上述各程序模块的划分进行举例说明,实际应用中,可以根据需要而将上述处理分配由不同的程序模块完成,即将装置的内部结构划分成不同的程序模块,以完成以上描述的全部或者部分处理。
实际应用时,测量模块61、反馈模块62、接收及解析模块可由基于PMI的处理装置中的处理器结合通信接口实现。
为实现本公开实施例的方法,本公开实施例还提供了一种基于PMI的处理装置,设置在基站,如图7所示,所述装置包括:
接收单元71,用于接收终端反馈的子带的CSI;所述子带的带宽对应部分或全部控制信道带宽;
解析单元72,用于解析所述CSI,得到PMI和第一信息;
确定单元73,用于利用所述PMI和第一信息确定所述子带数据信道的预编码矩阵和所述子带控制信道的预编码向量;所述子带数据信道采用多流预编码方式传输数据。
这里,实际应用时,当所述子带数据信道采用单流预编码方式传输数据时,所述确定单元73将所述子带数据信道的PMI直接作为所述子带控制信道的PMI。
本公开实施例提供的方案,数据和控制信息的传输采用闭环传输模式。
这里,实际应用时,当选用数据信道的PMI所指示的多流码字中的固定位置或随机位置的一个向量作为控制信道的预编码向量,即解析得到的所述PMI为所述子带数据信道的PMI且所述第一信息为空时,所述确定单元73,具体用于:
利用所述子带数据信道的PMI确定所述子带数据信道的预编码矩阵;并将所述子带数据信道的PMI对应的预编码矩阵中的固定位置或随机位置的向量作为所述子带控制信道的预编码向量。
也可以需要反馈除数据信道的PMI外的额外的信息比特,以指示反馈多层码字中的一个预编码向量作为控制信道的预编码向量,基于此,在一些实施例中,所述确定单元73,具体用于:
当所述PMI为所述子带数据信道的PMI且所述第一信息不为空时,利用所述子带数据信道的PMI确定所述子带数据信道的预编码矩阵;并利用所述第一信息确定所述子带控制信道的预编码向量。
由于有两种反馈PMI和第一信息的方式,也就是说,基站可以通过上述两种方式中的一种方式确定所述子带数据信道的预编码矩阵和所述子带控制信道的预编码向量,所以实际应用时,当终端支持两种反馈的方式时,基站可以通过高层信令配置终端采用哪种方式反馈PMI和第一信息。
基于此,在一些实施例中,该装置还可以包括:
指示单元,用于接收终端反馈的子带的CSI之前,通过RRC信令或系统 信息将PMI和第一信息的反馈方式指示给所述终端。
其中,利用所述第一信息确定所述子带控制信道的预编码向量的方式时,所述确定单元73可以利用所述第一信息独立确定所述子带控制信道的预编码向量;或者所述确定单元73利用所述第一信息及所述子带数据信道的PMI联合确定所述子带控制信道的预编码向量。
其中,在一些实施例中,当所述第一信息及所述子带数据信道的PMI联合指示所述子带控制信道的预编码向量时,所述确定单元73利用利用所述子带数据信道的PMI,确定一个码本中的码字;
所述确定单元73将所述第一信息指示的所述码字中特定位置的预编码向量,作为所述子带控制信道的预编码向量。
需要说明的是:上述实施例提供的基于PMI的处理装置在进行PMI处理时,仅以上述各程序模块的划分进行举例说明,实际应用中,可以根据需要而将上述处理分配由不同的程序模块完成,即将装置的内部结构划分成不同的程序模块,以完成以上描述的全部或者部分处理。
实际应用时,接收单元71及指示单元可由基于PMI的处理装置中的处理器结合通信接口实现;所述解析单元72及确定单元73可由基于PMI的处理装置中的处理器实现。
基于上述装置的硬件实现,本公开实施例还提供了一种终端,如图8所示,该终端80包括:
第一通信接口81,能够与基站进行信息交互;
第一处理器82,与所述第一通信接口连接,以实现与基站进行信息交互,用于运行计算机程序时,执行上述终端侧一个或多个技术方案提供的方法。
具体地,所述第一处理器82,用于对子带进行信道测量;
第一通信接口81,用于向基站反馈CSI;其中,
在反馈CSI时,当所述子带的带宽对应部分或全部控制信道带宽时,反 馈的PMI和第一信息指示所述子带数据信道的预编码矩阵和所述子带控制信道的预编码向量;所述数据信道采用多流预编码方式传输数据。
其中,在一实施例中,所述第一通信接口81反馈PMI和第一信息的方式包括以下之一:
反馈所述子带数据信道的PMI,反馈第一信息为空;所述子带数据信道的PMI指示子带数据信道的预编码矩阵;且所述预编码矩阵中的固定位置的向量或随机位置的向量用于供基站确定所述子带控制信道的预编码向量;
反馈所述子带数据信道的PMI,且反馈第一信息不为空,所述第一信息用于供基站确定所述子带控制信道的预编码向量。
在一实施例中,所述第一通信接口81,还用于接收基站发送的无线资源控制RRC信令或系统信息;
所述第一处理器82,还用于解析所述RRC信令或系统信息,得到PMI及第一信息的反馈方式;
相应地,所述第一通信接口81根据得到的方式反馈PMI及第一信息。
当然,实际应用时,如图8所示,该终端还可以包括:
第一存储器83,所述计算机程序存储在所述第一存储器83上;
用户接口84。
其中,终端80中的各个组件通过总线系统85耦合在一起。可理解,总线系统85用于实现这些组件之间的连接通信。总线系统85除包括数据总线之外,还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见,在图8中将各种总线都标为总线系统85。
其中,用户接口84可以包括显示器、键盘、鼠标、轨迹球、点击轮、按键、按钮、触感板或者触摸屏等。
本公开实施例中的第一存储器83用于存储各种类型的数据以支持终端80的操作。
上述本公开实施例揭示的终端侧方法可以应用于第一处理器82中,或者 由第一处理器82实现。第一处理器82可能是一种集成电路芯片,具有信号的处理能力。在实现过程中,上述方法的各步骤可以通过第一处理器82中的硬件的集成逻辑电路或者软件形式的指令完成。上述的第一处理器82可以是通用处理器、数字信号处理器(DSP,Digital Signal Processor),或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。第一处理器82可以实现或者执行本公开实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本公开实施例所公开的方法的步骤,可以直接体现为硬件译码处理器执行完成,或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于存储介质中,该存储介质位于第一存储器83,第一处理器82读取第一存储器83中的信息,结合其硬件完成前述方法的步骤。
在示例性实施例中,终端80可以被一个或多个应用专用集成电路(ASIC,Application Specific Integrated Circuit)、DSP、可编程逻辑器件(PLD,Programmable Logic Device)、复杂可编程逻辑器件(CPLD,Complex Programmable Logic Device)、现场可编程门阵列(FPGA,Field-Programmable Gate Array)、通用处理器、控制器、微控制器(MCU,Micro Controller Unit)、微处理器(Microprocessor)、或其他电子元件实现,用于执行前述方法。
基于上述装置的硬件实现,本公开实施例还提供了一种基站,如图9所示,该基站90包括:
第二通信接口91,能够与基站进行信息交互;
第二处理器92,与所述第一通信接口连接,以实现与基站进行信息交互,用于运行计算机程序时,执行上述终端侧一个或多个技术方案提供的方法。
具体地,所述第二通信接口91,用于接收终端反馈的子带的CSI;所述子带的带宽对应部分或全部控制信道带宽;
所述第二处理器92,用于解析所述CSI,得到PMI和第一信息;利用所述PMI和第一信息确定所述子带数据信道的预编码矩阵和所述子带控制信道 的预编码向量;所述子带数据信道采用多流预编码方式传输数据。
在一实施例中,所述第二处理器92,具体用于执行以下操作之一:
当所述PMI为所述子带数据信道的PMI且所述第一信息为空时,利用所述子带数据信道的PMI确定所述子带数据信道的预编码矩阵;并将所述子带数据信道的PMI对应的预编码矩阵中的固定位置或随机位置的向量作为所述子带控制信道的预编码向量;
当所述PMI为所述子带数据信道的PMI且所述第一信息不为空时,利用所述子带数据信道的PMI确定所述子带数据信道的预编码矩阵;并利用所述第一信息确定所述子带控制信道的预编码向量。
在一实施例中,所述第二处理器92,用于执行以下操作之一:
利用所述第一信息独立确定所述子带控制信道的预编码向量;
利用所述第一信息及所述子带数据信道的PMI联合确定所述子带控制信道的预编码向量。
在一实施例中,所述第二处理器92,具体用于:
利用所述子带数据信道的PMI,确定一个码本中的码字;
将所述第一信息指示的所述码字中特定位置的预编码向量,作为所述子带控制信道的预编码向量。
在一实施例中,所述第二通信接口91,还用于接收终端反馈的子带的CSI之前,通过RRC信令或系统信息将PMI和第一信息的反馈方式指示给所述终端。
在一实施例中,所述第二处理器92,还用于:当所述子带数据信道采用单流预编码方式传输数据时,将所述子带数据信道的PMI直接作为所述子带控制信道的PMI。
当然,实际应用时,如图9所示,该终端还可以包括:
第二存储器93,所述计算机程序存储在所述第二存储器93上。
其中,基站90中的各个组件通过总线系统94耦合在一起。可理解,总 线系统94用于实现这些组件之间的连接通信。总线系统94除包括数据总线之外,还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见,在图9中将各种总线都标为总线系统94。
本公开实施例中的第二存储器93用于存储各种类型的数据以支持基站90的操作。
上述本公开实施例揭示的方法可以应用于第二处理器92中,或者由第二处理器92实现。第二处理器92可能是一种集成电路芯片,具有信号的处理能力。在实现过程中,上述方法的各步骤可以通过第二处理器92中的硬件的集成逻辑电路或者软件形式的指令完成。上述的第二处理器92可以是通用处理器、DSP,或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。第二处理器92可以实现或者执行本公开实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本公开实施例所公开的方法的步骤,可以直接体现为硬件译码处理器执行完成,或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于存储介质中,该存储介质位于第二存储器93,第二处理器92读取第二存储器93中的信息,结合其硬件完成前述方法的步骤。
在示例性实施例中,基站90可以被一个或多个ASIC、DSP、PLD、CPLD、FPGA、通用处理器、控制器、MCU、Microprocessor、或其他电子元件实现,用于执行前述方法。
可以理解,本公开实施例中的存储器(比如第一存储器83及第二存储器93),可以是易失性存储器或非易失性存储器,也可包括易失性和非易失性存储器两者。其中,非易失性存储器可以是只读存储器(ROM,Read Only Memory)、可编程只读存储器(PROM,Programmable Read-Only Memory)、可擦除可编程只读存储器(EPROM,Erasable Programmable Read-Only Memory)、电可擦除可编程只读存储器(EEPROM,Electrically Erasable Programmable Read-Only Memory)、磁性随机存取存储器(FRAM, ferromagnetic random access memory)、快闪存储器(Flash Memory)、磁表面存储器、光盘、或只读光盘(CD-ROM,Compact Disc Read-Only Memory);磁表面存储器可以是磁盘存储器或磁带存储器。易失性存储器可以是随机存取存储器(RAM,Random Access Memory),其用作外部高速缓存。通过示例性但不是限制性说明,许多形式的RAM可用,例如静态随机存取存储器(SRAM,Static Random Access Memory)、同步静态随机存取存储器(SSRAM,Synchronous Static Random Access Memory)、动态随机存取存储器(DRAM,Dynamic Random Access Memory)、同步动态随机存取存储器(SDRAM,Synchronous Dynamic Random Access Memory)、双倍数据速率同步动态随机存取存储器(DDRSDRAM,Double Data Rate Synchronous Dynamic Random Access Memory)、增强型同步动态随机存取存储器(ESDRAM,Enhanced Synchronous Dynamic Random Access Memory)、同步连接动态随机存取存储器(SLDRAM,SyncLink Dynamic Random Access Memory)、直接内存总线随机存取存储器(DRRAM,Direct Rambus Random Access Memory)。本公开实施例描述的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
示例性实施例中,本公开实施例还提供了一种计算机可读存储介质,例如包括存储计算机程序的第一存储器83,存储在第一存储器83上的计算机程序可由终端80的第一处理器82执行,以完成前述终端侧方法所述步骤;还可以包括存储计算机程序的第二存储器93,存储在第二存储器93上的计算机程序可由基站90的第二处理器92执行,以完成前述基站侧方法所述步骤。
需要说明的是:本公开实施例提供的计算机可读存储介质可以是FRAM、ROM、PROM、EPROM、EEPROM、Flash Memory、磁表面存储器、光盘、或CD-ROM等存储器;也可以是包括上述存储器之一或任意组合的各种设备。
为实现本公开实施例的方法,本公开实施例还提供了一种基于PMI的处 理系统,如图10所示,该系统包括:
终端101,用于对子带进行信道测量并向基站102反馈CSI;其中,在反馈CSI时,当所述子带的带宽对应部分或全部控制信道带宽时,反馈的PMI和第一信息指示所述子带数据信道的预编码矩阵和所述子带控制信道的预编码向量;所述数据信道采用多流预编码方式传输数据;
基站102,用于接收终端反馈101的子带的CSI;解析所述CSI,得到反馈的PMI和第一信息;以及利用所述反馈的PMI和第一信息确定所述子带数据信道的预编码矩阵和所述子带控制信道的预编码向量。
需要说明的是:终端101和基站102的具体处理过程已在上文详述,这里不再赘述。
以上所述,仅为本公开的较佳实施例而已,并非用于限定本公开的保护范围。

Claims (25)

  1. 一种基于预编码矩阵指示PMI的处理方法,所述方法包括:
    对子带进行信道测量并向基站反馈信道状态信息CSI;其中,
    在反馈CSI时,当所述子带的带宽对应部分或全部控制信道带宽时,反馈的PMI和第一信息指示所述子带数据信道的预编码矩阵和所述子带控制信道的预编码向量;所述数据信道采用多流预编码方式传输数据。
  2. 根据权利要求1所述的方法,其中,反馈PMI和第一信息的方式包括以下之一:
    反馈所述子带数据信道的PMI,反馈第一信息为空;所述子带数据信道的PMI指示子带数据信道的预编码矩阵;且所述预编码矩阵中的固定位置的向量或随机位置的向量用于供基站确定所述子带控制信道的预编码向量;
    反馈所述子带数据信道的PMI,且反馈第一信息不为空,所述第一信息用于基站确定所述子带控制信道的预编码向量。
  3. 根据权利要求2所述的方法,其中,所述方法还包括:
    接收基站发送的无线资源控制RRC信令或系统信息;
    解析所述RRC信令或系统信息,得到PMI及第一信息的反馈方式;
    相应地,根据得到的方式反馈PMI及第一信息。
  4. 根据权利要求2所述的方法,其中,反馈所述子带数据信道的PMI,且反馈第一信息不为空时,满足以下特征之一:
    所述第一信息独立指示所述子带控制信道的预编码向量;
    所述第一信息及所述子带数据信道的PMI联合指示所述子带控制信道的预编码向量。
  5. 根据权利要求4所述的方法,其中,所述第一信息及所述子带数据信道的PMI联合指示所述子带控制信道的预编码向量时,所述子带数据信道的PMI指示一个码本中的码字;所述第一信息指示所述码字中特定位置的预编 码向量。
  6. 一种基于PMI的处理方法,包括:
    接收终端反馈的子带的CSI;所述子带的带宽对应部分或全部控制信道带宽;
    解析所述CSI,得到PMI和第一信息;利用所述PMI和第一信息确定所述子带数据信道的预编码矩阵和所述子带控制信道的预编码向量;所述子带数据信道采用多流预编码方式传输数据。
  7. 根据权利要求6所述的方法,其中,利用所述PMI和第一信息确定所述子带数据信道的预编码矩阵和所述子带控制信道的预编码向量的方式包括以下之一:
    当所述PMI为所述子带数据信道的PMI且所述第一信息为空时,利用所述子带数据信道的PMI确定所述子带数据信道的预编码矩阵;并将所述子带数据信道的PMI对应的预编码矩阵中的固定位置或随机位置的向量作为所述子带控制信道的预编码向量;
    当所述PMI为所述子带数据信道的PMI且所述第一信息不为空时,利用所述子带数据信道的PMI确定所述子带数据信道的预编码矩阵;并利用所述第一信息确定所述子带控制信道的预编码向量。
  8. 根据权利要求7所述的方法,其中,所述利用所述第一信息确定所述子带控制信道的预编码向量的方式包括以下方式之一:
    利用所述第一信息独立确定所述子带控制信道的预编码向量;
    利用所述第一信息及所述子带数据信道的PMI联合确定所述子带控制信道的预编码向量。
  9. 根据权利要求8所述的方法,其中,所述利用所述第一信息及所述子带数据信道的PMI联合确定所述子带控制信道的预编码向量,包括:
    利用所述子带数据信道的PMI,确定一个码本中的码字;
    将所述第一信息指示的所述码字中特定位置的预编码向量,作为所述子 带控制信道的预编码向量。
  10. 根据权利要求7所述的方法,其中,所述接收终端反馈的子带的CSI之前,所述方法还包括:
    通过RRC信令或系统信息将PMI和第一信息的反馈方式指示给所述终端。
  11. 根据权利要求6至10任一项所述的方法,其中,所述方法还包括:
    当所述子带数据信道采用单流预编码方式传输数据时,将所述子带数据信道的PMI直接作为所述子带控制信道的PMI。
  12. 一种基于PMI的处理装置,包括:
    测量模块,用于对子带进行信道测量;
    反馈模块,用于向基站反馈CSI;其中,
    在反馈CSI时,当所述子带的带宽对应部分或全部控制信道带宽时,反馈的PMI和第一信息指示所述子带数据信道的预编码矩阵和所述子带控制信道的预编码向量;所述数据信道采用多流预编码方式传输数据。
  13. 一种基于PMI的处理装置,包括:
    接收单元,用于接收终端反馈的子带的CSI;所述子带的带宽对应部分或全部控制信道带宽;
    解析单元,用于解析所述CSI,得到PMI和第一信息;
    确定单元,用于利用所述PMI和第一信息确定所述子带数据信道的预编码矩阵和所述子带控制信道的预编码向量;所述子带数据信道采用多流预编码方式传输数据。
  14. 一种终端,包括:
    第一处理器,用于对子带进行信道测量;
    第一通信接口,用于向基站反馈CSI;其中,
    在反馈CSI时,当所述子带的带宽对应部分或全部控制信道带宽时,反馈的PMI和第一信息指示所述子带数据信道的预编码矩阵和所述子带控制信 道的预编码向量;所述数据信道采用多流预编码方式传输数据。
  15. 根据权利要求14所述的终端,其中,所述第一通信接口反馈PMI和第一信息的方式包括以下之一:
    反馈所述子带数据信道的PMI,反馈第一信息为空;所述子带数据信道的PMI指示子带数据信道的预编码矩阵;且所述预编码矩阵中的固定位置的向量或随机位置的向量用于供基站确定所述子带控制信道的预编码向量;
    反馈所述子带数据信道的PMI,且反馈第一信息不为空,所述第一信息用于供基站确定所述子带控制信道的预编码向量。
  16. 根据权利要求15所述的终端,其中,
    所述第一通信接口,还用于接收基站发送的无线资源控制RRC信令或系统信息;
    所述第一处理器,还用于解析所述RRC信令或系统信息,得到PMI及第一信息的反馈方式;
    相应地,所述第一通信接口根据得到的方式反馈PMI及第一信息。
  17. 一种基站,包括:
    第二通信接口,用于接收终端反馈的子带的CSI;所述子带的带宽对应部分或全部控制信道带宽;
    第二处理器,用于解析所述CSI,得到PMI和第一信息;利用所述PMI和第一信息确定所述子带数据信道的预编码矩阵和所述子带控制信道的预编码向量;所述子带数据信道采用多流预编码方式传输数据。
  18. 根据权利要求17所述的基站,其中,所述第二处理器,具体用于执行以下操作之一:
    当所述PMI为所述子带数据信道的PMI且所述第一信息为空时,利用所述子带数据信道的PMI确定所述子带数据信道的预编码矩阵;并将所述子带数据信道的PMI对应的预编码矩阵中的固定位置或随机位置的向量作为所述子带控制信道的预编码向量;
    当所述PMI为所述子带数据信道的PMI且所述第一信息不为空时,利用所述子带数据信道的PMI确定所述子带数据信道的预编码矩阵;并利用所述第一信息确定所述子带控制信道的预编码向量。
  19. 根据权利要求18所述的基站,其中,所述第二处理器,用于执行以下操作之一:
    利用所述第一信息独立确定所述子带控制信道的预编码向量;
    利用所述第一信息及所述子带数据信道的PMI联合确定所述子带控制信道的预编码向量。
  20. 根据权利要求19所述的基站,其中,所述第二处理器,具体用于:
    利用所述子带数据信道的PMI,确定一个码本中的码字;
    将所述第一信息指示的所述码字中特定位置的预编码向量,作为所述子带控制信道的预编码向量。
  21. 根据权利要求18所述的基站,其中,所述第二通信接口,还用于接收终端反馈的子带的CSI之前,通过RRC信令或系统信息将PMI和第一信息的反馈方式指示给所述终端。
  22. 根据权利要求17至21任一项所述的基站,其中,所述第二处理器,还用于:
    当所述子带数据信道采用单流预编码方式传输数据时,将所述子带数据信道的PMI直接作为所述子带控制信道的PMI。
  23. 一种终端,包括:第一处理器、第一存储器及存储在所述第一存储器上并能够在所述第一处理器上运行的计算机程序;
    其中,所述第一处理器用于运行所述计算机程序时,执行权利要求1至5任一项所述方法的步骤。
  24. 一种基站,包括:第二处理器、第二存储器及存储在所述第二存储器上并能够在所述第二处理器上运行的计算机程序;
    其中,所述第二处理器用于运行所述计算机程序时,执行权利要求6至 11任一项所述方法的步骤。
  25. 一种计算机可读存储介质,其上存储有计算机程序,其中,所述计算机程序被处理器执行时实现权利要求1至5任一项所述方法的步骤,或者实现权利要求6至11任一项所述方法的步骤。
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