WO2011140992A1 - 一种预编码信息的发送和接收方法及装置 - Google Patents

一种预编码信息的发送和接收方法及装置 Download PDF

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Publication number
WO2011140992A1
WO2011140992A1 PCT/CN2011/073987 CN2011073987W WO2011140992A1 WO 2011140992 A1 WO2011140992 A1 WO 2011140992A1 CN 2011073987 W CN2011073987 W CN 2011073987W WO 2011140992 A1 WO2011140992 A1 WO 2011140992A1
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Prior art keywords
subband
precoding information
information
precoding
sub
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PCT/CN2011/073987
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English (en)
French (fr)
Inventor
王建国
周永行
陈小波
孙卫军
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to JP2013509441A priority Critical patent/JP2013530612A/ja
Priority to EP11780213.2A priority patent/EP2571185A4/en
Publication of WO2011140992A1 publication Critical patent/WO2011140992A1/zh
Priority to US13/673,562 priority patent/US20130064207A1/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453Resources in frequency domain, e.g. a carrier in FDMA
    • 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
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0028Formatting
    • H04L1/0031Multiple signaling transmission
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00Baseband systems
    • H04L25/02Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006Arrangements for removing intersymbol interference
    • H04L25/03343Arrangements at the transmitter end
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/21Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and apparatus for transmitting and receiving precoding information.
  • the data sender (such as
  • NodeB Node B
  • BS Base station, etc.
  • the terminal such as UE (User Equipment), MS (Mobile Station), etc.) (such as PMI (Precoding Matrix) Indicator, precoding matrix indication) and the locally pre-stored codebook, pre-process the data to be sent and then send it to the terminal, so that the data transmission process can adapt to the change of the channel state, thereby improving the performance of the data transmission. Therefore, how to send It is important to receive the above precoding information.
  • the terminal such as UE (User Equipment), MS (Mobile Station), etc.
  • PMI Precoding Matrix Indicator, precoding matrix indication
  • the locally pre-stored codebook pre-process the data to be sent and then send it to the terminal, so that the data transmission process can adapt to the change of the channel state, thereby improving the performance of the data transmission. Therefore, how to send It is important to receive the above precoding information.
  • the system uses a single codebook whose precoding matrix is indexed by a single PMI (precoding matrix indicator), which can pass through the physical uplink control channel (PUCCH) and The physical uplink shared channel (PUSCH) performs periodic and aperiodic reporting.
  • PMI precoding matrix indicator
  • the PUCCH can only feed back the wideband PMI (the entire system bandwidth uses this single PMI so that each subband uses the same PMI).
  • the PUCCH periodic reporting mode adopted by the existing LTE-R8 system has a small overhead, but the capacity is limited, and only the broadband PMI information can be transmitted. Therefore, it is necessary to further study the escalation mode and the type of reports used to improve system performance. Summary of the invention
  • Embodiments of the present invention provide a method and an apparatus for transmitting and receiving precoding information to improve performance of precoding.
  • an embodiment of the present invention provides a method for transmitting precoding information:
  • the system bandwidth is divided into at least one bandwidth portion BP, wherein each BP includes at least one subband, and the method includes:
  • an embodiment of the present invention provides a method for receiving precoding information.
  • the system bandwidth is divided into at least one bandwidth portion BP, wherein each BP includes at least one subband, and the method includes:
  • the sub-band selected in the first BP is selected by the terminal according to a preset criterion or a rule agreed in advance.
  • an embodiment of the present invention provides a device for transmitting precoding information, which is applicable to a system bandwidth divided into at least one bandwidth portion BP, wherein each BP includes a scene of at least one subband, including:
  • a subband selection unit configured to select a subband in the first BP according to a preset criterion or a previously agreed rule
  • An information acquiring unit configured to acquire precoding information of one subband selected by the subband selection unit in the first BP;
  • an information sending unit configured to send precoding information of one subband selected in the first BP acquired by the information acquiring unit.
  • an embodiment of the present invention provides a device for receiving precoding information, which is applicable to a scenario in which a system bandwidth is divided into at least one bandwidth portion BP, where each BP includes at least one subband, including: An information receiving unit, configured to receive precoding information of a subband selected by the terminal in the first BP;
  • the sub-band selected in the first BP is selected by the terminal according to a preset criterion or a predetermined rule.
  • the technical solution provided by the embodiment of the present invention divides the system bandwidth into at least one BP, selects the subband in the BP, and obtains the precoding information of the subband, thereby further improving the precoding performance of the subband, thereby improving the overall performance of the system. . DRAWINGS
  • FIG. 1 is a flowchart of a method for transmitting i and receiving precoding information according to Embodiment 1 of the present invention
  • FIG. 2 is a flowchart of a method for transmitting i and receiving precoding information according to Embodiment 2 of the present invention
  • FIG. 4 is a flowchart of a method for transmitting i and receiving precoding information according to Embodiment 4 of the present invention
  • FIG. 4 is a flowchart of a method for transmitting i and receiving precoding information according to Embodiment 4 of the present invention
  • FIG. 6 is a flowchart of a method for transmitting i and receiving precoding information according to Embodiment 6 of the present invention
  • FIG. 6 is a flowchart of a method for transmitting i and receiving precoding information according to Embodiment 6 of the present invention
  • FIG. 7 is a flowchart of a method for transmitting precoding information according to Embodiment 6 of the present invention
  • FIG. 8 is a flowchart of a method for transmitting i and receiving precoding information according to Embodiment 7
  • FIG. 8 is a flowchart of a method for transmitting i and receiving precoding information according to Embodiment 8 of the present invention
  • FIG. 9 is Embodiment 9 of the present invention.
  • a flow chart of a method for transmitting i and receiving precoding information is provided;
  • Flowchart 10 is a method for transmitting and receiving precoding information according to Embodiment 10 of the present invention.
  • Flowchart 11 is a method for transmitting and receiving precoding information according to Embodiment 11 of the present invention.
  • Flowchart 12 is provided in Embodiment 13 of the present invention. Method flow for transmitting and receiving precoded information
  • FIG. 13 is a flowchart of a method for transmitting and receiving precoding information according to Embodiment 14 of the present invention
  • 14 is a flowchart of a method for transmitting and receiving precoding information according to Embodiment 15 of the present invention
  • Embodiment 15 is a flow chart of a method for transmitting and receiving precoding information according to Embodiment 16 of the present invention.
  • FIG. 16 is a flow chart of a method for transmitting and receiving precoding information according to Embodiment 17 of the present invention.
  • FIG. 17 is a flow chart of a method for transmitting and receiving precoding information according to Embodiment 18 of the present invention.
  • Embodiment 18 is a flow chart of a method for transmitting and receiving precoding information according to Embodiment 19 of the present invention.
  • Embodiment 19 is a flow chart of a method for transmitting and receiving precoding information according to Embodiment 20 of the present invention.
  • FIG. 20 is a structural diagram of an apparatus for transmitting precoding information according to Embodiment 21 of the present invention
  • FIG. 21 is a structural diagram of an apparatus for receiving precoding information according to Embodiment 22 of the present invention.
  • an embodiment of the present invention provides a method for transmitting precoding information, where the system bandwidth is divided into at least one bandwidth portion BP, where each BP includes at least one subband, and the method includes:
  • the terminal selects a subband in the first BP according to a preset criterion, and acquires precoding information of the subband.
  • the first BP selected may be obtained according to a pre-agreed rule, for example, according to different reported subframes being sequentially scanned in order of increasing frequency.
  • the terminal calculates the sub-band label based on the preset criterion 1, as shown in the formula (1):
  • C ( ) represents the objective function of subband i corresponding to the preset criterion 1.
  • selecting a sub-band in the first BP according to the preset criterion 1 includes: selecting one sub-band with the largest capacity or throughput in the first BP.
  • the preset criterion 1 is a throughput maximization criterion
  • the objective function corresponding to the criterion may be a throughput maximization function, which may be implemented based on information capacity calculation, or may be based on mutual information or mutual information.
  • the preset criterion is the capacity maximization criterion is similar to the above, and will not be repeated here.
  • the pre-coding information on the sub-band is calculated based on the preset criterion 2 (here, the sub-band label.
  • the pre-coding information of the corresponding sub-band may be the pre-coding matrix indication j 0 ) , as shown in equation (2):
  • denotes a codeword in the set of precoding matrices W.
  • /(., ) represents the subband corresponding to the preset criterion 2.
  • the precoding matrix ⁇ the objective function.
  • the objective function corresponding to the criterion may be a throughput maximization function, which may be implemented based on information capacity calculation, or may be based on mutual information or mutual information deformation (eg, mutual The weighting of the information is implemented, and the preset criterion 2 is similar to the above embodiment of the capacity maximization criterion, and details are not described herein again.
  • a sub-band may be selected in the first BP according to the preset criterion 3, and the pre-coding information of the sub-band is obtained according to the preset criterion 3, specifically, as shown in the formula (3), the sub-band label ⁇ and the precoding matrix indicate that Q can be jointly selected according to equation (3):
  • the ⁇ in the formula (2) or (3) can be selected from a single codebook C.
  • formula (2) Or (3) may also be a function of two matrices, and, where, represents a wideband precoding matrix, from the codebook CI; ⁇ 2 represents a frequency selective precoding matrix, from the codebook C2.
  • are used to obtain the matrix ⁇ and the matrix ⁇ 2 from the codebook C1 and the codebook C2 index, respectively, and the wideband precoding matrix indication and the frequency selective precoding matrix indication corresponding to Q are respectively ⁇ . , . ⁇ . , 2 ;
  • k, 2 are sub-band labels. Precoding information for the corresponding subband.
  • the broadband precoding information 1 can be individually selected according to the preset criterion 4, and specifically by the formula (4).
  • represents a codeword in the set of wideband precoding matrices CI
  • represents the objective function of the wideband precoding matrix ⁇ corresponding to the preset criterion.
  • the foregoing preset criterion 4 may be a throughput maximization criterion
  • the target function corresponding to the criterion may be a throughput maximization function, which may be implemented based on information capacity calculation, or may be based on Mutual information or mutual information deformation (such as the weight of mutual information) and so on.
  • the preset criterion 4 is the capacity maximization.
  • the embodiment of the criterion is similar to the above, and will not be described here.
  • the wideband precoding information may be further protected during transmission to improve the reliability of the wideband precoding information.
  • the wideband precoding information may be further protected during transmission to improve the reliability of the wideband precoding information.
  • the method may further include:
  • the terminal feeds back the identifier of the selected subband in the first BP and the precoding information of the subband to the data sending end.
  • the terminal labels the sub-bands obtained in step 101. ; and the precoding matrix indicates Q (corresponding to a single codebook) or .
  • Corresponding frequency selective precoding matrix indication 2 (corresponding to the dual codebook structure, in which case the wideband precoding information can be jointly fed through separate feedback), through the PUCCH signal The channel is fed back to the data sender.
  • the subband identifier and the precoding information of the subband can also pass
  • the PUSCH channel is fed back to the data transmitting end.
  • the data sending end receives the subband identifier in the first BP and the subband precoding information.
  • sub-band identifiers and sub-band pre-coding information of the different BPs may be transmitted in different subframes.
  • Wideband precoding information eg, wideband precoding matrix indication., J may be in the same subframe as frequency selective precoding information (eg, frequency selective precoding matrix indication j 0 , 2 ) may also be in different subframes Reported.
  • the method for transmitting and receiving precoding information divides a system bandwidth into at least one BP, selects a subband in the BP, and obtains precoding information of the subband, thereby further improving precoding performance of the subband.
  • the selected substrip has more opportunities to be scheduled to the UE, thereby improving the overall performance of the system.
  • an embodiment of the present invention provides a method for transmitting and receiving precoding information, where the system bandwidth is divided into at least one bandwidth part BP, where each BP includes at least one subband, and the method includes:
  • the terminal determines a subband selected in the first BP according to a rule agreed in advance with the data transmitting end, and acquires precoding information on the subband.
  • the rule that is agreed by the terminal and the data sending end determines a sub-band selected in the first BP, and may sequentially scan the first BP according to the sequence of increasing frequency according to different reporting subframes, in order of increasing frequency.
  • the sub-bands in the first BP are scanned, or the sub-bands in the first BP may be sequentially scanned in the order of decreasing frequency, or the corresponding sub-bands may be obtained according to a predetermined randomization function.
  • the pre-coding information on the sub-band is calculated based on the preset criterion 2, as shown in the formula (2).
  • the method may further include: 202: The terminal feeds back the precoding information of the selected subband in the first BP to the data sending end. Specifically, the terminal obtains the precoding information (corresponding to a single codebook) or the obtained in step 201. Corresponding frequency selective partial precoding information 2 (corresponding to the dual codebook structure, in which case the wideband precoding information can be separately fed back) is encoded, and fed back to the data transmitting end through the PUCCH channel. Of course, the precoding information of the subband can also be fed back to the data transmitting end through the PUSCH channel.
  • the precoding information of the subband can also be fed back to the data transmitting end through the PUSCH channel.
  • the data transmitting end receives the subband precoding information in the first BP.
  • the method for transmitting and receiving precoding information divides a system bandwidth into at least one BP, selects a subband in the BP, and obtains precoding information of the subband, thereby further improving precoding performance of the subband.
  • the selected subband and BP rules can be pre-determined for the data sender and the terminal, so there is no need to send the subband identifier, thereby saving overhead.
  • an embodiment of the present invention provides a method for transmitting and receiving precoding information, where the system bandwidth is divided into at least two BPs, and the method includes:
  • the UE selects one subband in the first BP and the second BP according to the preset criterion, and separately obtains precoding information of the two subbands.
  • the selected first BP and the second BP may be obtained according to a rule agreed in advance, for example, according to different reported subframes, sequentially scanned in order of increasing frequency.
  • the corresponding subband and its precoding information can be obtained according to the following method:
  • the terminal calculates the subband label based on the preset criterion 1. , as shown in formula (1). Further, after the selected sub-band is obtained, the pre-coding information on the sub-band is calculated based on the preset criterion 2, as shown in the formula (2). Alternatively, the terminal obtains a subband label based on the preset criterion 3. And the precoding matrix indicates ⁇ , which can be specifically selected according to the formula (3). The terminal obtains the broadband precoding information based on the preset criterion 4, and can be specifically calculated according to the formula (4).
  • the first and second of the first BP and the second BP in the embodiment of the present invention are only for distinguishing different BPs, and do not limit the position, order, and number of BPs.
  • the precoding information of the subband may be a precoding matrix of the subband indicating a PMI (for a single codebook) or a frequency selective part of the precoding information (if the precoding matrix may be broadband precoding information and frequency) Selective precoding information in two parts).
  • the terminal labels the subband obtained in step 301 and precoding information (for a single codebook) or corresponding frequency selective partial precoding information (double codebook structure, where the wideband precoding information can be separately fed back) Co-coding is performed and fed back to the data transmitting end through the PUCCH channel.
  • precoding information for a single codebook
  • frequency selective partial precoding information double codebook structure, where the wideband precoding information can be separately fed back
  • Co-coding is performed and fed back to the data transmitting end through the PUCCH channel.
  • the subband identifier and the precoding information of the subband can also be fed back to the data transmitting end through the PUSCH channel.
  • the data sending end receives the subband identifier in the first BP and the corresponding subband precoding information and the subband identifier in the second BP and the corresponding subband precoding information.
  • subband identifiers and the subband precoding information of the first and second BPs may be transmitted in the same subframe.
  • the subband identifiers and subband precoding information of other BPs may be transmitted in the same subframe as the subband identifiers and subband precoding information of the first and second BPs, or may be transmitted in different subframes.
  • the wideband precoding information may be reported in the same subframe or in different subframes as the frequency selective precoding information.
  • the wideband precoding information may be jointly encoded with the above frequency selective precoding information or may be separately encoded.
  • the method for transmitting and receiving precoding information divides a system bandwidth into at least two BPs, selects a subband in the BP, and obtains precoding information of the subband, thereby further improving precoding of the subband. Performance, selected sub-bands with more opportunities to be scheduled to the UE, thereby improving the overall performance of the system.
  • an embodiment of the present invention provides a method for transmitting and receiving precoding information, where the system bandwidth is divided into at least two bandwidth parts BP, where each BP includes at least one subband.
  • the method includes:
  • the terminal selects one subband in the first BP and the second BP according to a second rule agreed in advance with the data sending end, and separately obtains precoding information of the two subbands.
  • the first BP and the second BP may be obtained according to a first rule agreed in advance, for example, according to different reported subframes, sequentially scanned in order of increasing frequency.
  • the corresponding subband and precoding information can be obtained according to the following method:
  • the second rule agreed by the terminal and the data sending end may be that the sub-bands in the BP are sequentially scanned in the order of increasing frequency, or the sub-bands in the BP may be sequentially scanned in the order of decreasing frequency, or The corresponding subband is obtained according to a function agreed in advance.
  • the pre-coding information on the sub-band is calculated based on the preset criterion 2, as shown in the formula (2).
  • the method may further include:
  • the terminal feeds back precoding information of the selected subbands in the first BP and the second BP to the data sending end.
  • the terminal obtains the sub-band precoding information (for a single codebook) of the first and second BPs obtained in step 401 or the corresponding frequency selective partial precoding information (for the dual codebook structure, the broadband precoding at this time)
  • the information can be jointly encoded by separate feedback) and fed back to the data sender via the PUCCH channel.
  • the precoding information of the subband can also be fed back to the data transmitting end through the PUSCH channel.
  • the data sending end receives precoding information of the selected subband of the first BP and the second BP. It should be particularly noted that the precoding information of the selected subbands in the first and second BPs are transmitted in the same subframe. The subband precoding information of other BPs may be further described with the subbands of the first and second BPs. Further, the wideband precoding information may be related to the frequency selective precoding information. The same subframe can also be reported in different subframes. The wideband precoding information may be jointly encoded with the frequency selective precoding information described above, or may be separately encoded.
  • the method for transmitting and receiving precoding information divides the system bandwidth into at least two BPs, selects a subband in the BP, and obtains precoding information of the subband, thereby further improving precoding of the subband. performance.
  • the selected sub-band is pre-agreed by the data sender and the terminal, so the sub-band identifier does not need to be sent, thereby saving overhead.
  • an embodiment of the present invention provides a method for transmitting precoding information, where the system bandwidth is divided into at least one bandwidth portion BP, where each BP includes at least one subband, and the method includes:
  • the terminal selects a subband in the first BP according to a preset criterion and acquires precoding information on the subband.
  • the first BP may be obtained according to a pre-agreed rule, for example, according to different reporting subframes, which are sequentially scanned in order of increasing frequency.
  • the corresponding bandwidth portion reported by the subframe is BPj, which contains Nj subbands.
  • the terminal calculates the subband label, based on the preset criterion 1. , specifically as shown in formula (1).
  • the pre-coding information on the sub-band is calculated based on the preset criterion 2, as shown in the formula (2).
  • the subband label ⁇ and the precoding matrix indicator Q are calculated based on the preset criterion 3, as shown in the formula (3).
  • the broadband precoding information can also be calculated based on the preset criterion 4. , specifically as shown in formula (4).
  • the method further includes: calculating, according to the precoding information of the one subband selected in the first BP, a channel quality indicator CQI of the subband;
  • the method may further include:
  • the terminal labels the sub-band obtained in step 501.
  • precoding information ⁇ single codebook or with.
  • Corresponding frequency selective partial precoding information. 2 double codebook structure, at this time the wideband precoding information can be separately fed back
  • CQI jointly coded, and fed back to the data transmitting end through the PUCCH channel.
  • the subband identifier and the precoding information of the subband and the CQI can also be fed back to the data transmitting end through the PUSCH channel.
  • the data sending end receives the subband identifier in the first BP and the subband precoding information and the CQI. It should be particularly noted that the sub-band representations of the different BPs and the sub-band pre-coding information are transmitted in different subframes. It should be further noted that the wideband precoding information may be reported in the same subframe or in different subframes as the frequency selective precoding information.
  • the method for transmitting and receiving precoding information divides a system bandwidth into at least one BP, selects a subband in the BP, and obtains precoding information of the subband, thereby further improving precoding performance of the subband.
  • the selected substrip has more opportunities to be scheduled to the UE, thereby improving the overall performance of the system. Simultaneous transmission of CQI information with precoding information can improve the frequency scheduling gain and facilitate accurate selection of modulation and coding modes.
  • an embodiment of the present invention provides a method for transmitting and receiving precoding information, where the system bandwidth is divided into at least one bandwidth part BP, where each BP includes at least one subband, and the method includes:
  • the terminal determines a subband selected in the first BP according to a second rule agreed in advance with the data transmitting end, and acquires precoding information on the subband.
  • the first BP is sequentially scanned according to the first rule agreed in advance, for example, according to different reporting subframes in order of increasing frequency.
  • the second rule agreed by the terminal and the data sending end may be that the sub-bands in the BP are sequentially scanned in the order of increasing frequency, or the sub-bands in the BP may be sequentially scanned in the order of decreasing frequency, or The corresponding subband is obtained according to the randomization function agreed in advance.
  • the precoding information is specifically as shown in the formula (2).
  • the method further includes: calculating, according to the precoding information of the one subband selected in the first BP, a channel quality indicator CQI of the subband. ;
  • the method may further include:
  • the terminal feeds back the precoding information and the CQI of the selected subband in the first BP to the data sending end.
  • the terminal obtains the precoding information obtained in step 601. (single codebook) or frequency selective partial precoding information corresponding to ⁇ . 2 (double codebook structure, at this time, the wideband precoding information can be separately fed back) and CQI jointly coded, and fed back to the data transmitting end through the PUCCH channel.
  • the data transmitting end receives the subband precoding information and the CQI in the first BP.
  • the method for transmitting and receiving precoding information divides a system bandwidth into at least one BP, selects a subband in the BP, and obtains precoding information of the subband, thereby further improving precoding performance of the subband. .
  • the selected sub-band is pre-agreed by the data sender and the terminal, so the sub-band identifier does not need to be sent, thereby saving overhead.
  • Simultaneously transmitting CQI information with precoding information can improve the frequency scheduling gain and also facilitate accurate selection of modulation and coding modes.
  • an embodiment of the present invention provides a method for transmitting and receiving precoding information, where the system bandwidth is divided into at least two BPs, and the method includes:
  • the UE selects one subband in the first BP and the second BP according to the preset criterion, and separately obtains precoding information of the two subbands.
  • the first BP and the second BP may be obtained according to a pre-agreed rule, for example, according to different reported subframes being sequentially scanned in the order of increasing frequency.
  • the corresponding sub-routine may be obtained according to the following method.
  • the terminal calculates the sub-band label based on the preset criterion 1. , Specifically, it is as shown in the formula (1). Further, after the selected sub-band is obtained, the pre-coding information on the sub-band is calculated based on the preset criterion 2, as shown in the formula (2). Or, subband labels. And the precoding matrix indication can be obtained by joint selection according to equation (3). The wideband precoding information can be calculated according to equation (4).
  • the method may further include: calculating a channel quality of the sub-band based on the pre-coding information of the sub-band selected in the first BP Indicating a CQI; calculating a channel quality indicator CQI of the subband based on the precoding information of the subband selected in the second BP;
  • the terminal feeds back the subband identifier selected in the first BP and the precoding information of the subband and the subband identifier selected in the CQI and the second BP, and the precoding information and the CQI of the subband to the data sending end.
  • the precoding information of the subband may be a precoding matrix indicating PMI of the subband
  • the precoding matrix may be a wideband precoding matrix and a frequency selective precoding matrix
  • the two-part) precoding information of the sub-bands may be a frequency selective portion of the pre-encoded information.
  • the terminal jointly encodes the subband label obtained in step 701 and the precoding information of the subband and the CQI, and feeds back to the data transmitting end through the PUCCH channel.
  • the sub-band identifier and the pre-coding information of the sub-band can also be fed back to the data transmitting end through the PUSCH channel.
  • the data sending end receives the subband identifier in the first BP and the subband precoding information and the subband identifier in the CQI and the second BP, and the subband precoding information and the CQI.
  • the sub-band identifiers of the first and second BPs and the corresponding sub-band precoding information and CQI may be transmitted in the same subframe.
  • the subband identifiers and subband precoding information of other BPs may be transmitted in the same subframe as the subband identifiers of the first and second BPs, and the subband precoding information and the CQI, or may be transmitted in different subframes.
  • the wideband precoding information may be reported in the same subframe or in different subframes as the frequency selective precoding information. Wideband precoding information can be selected with the above frequencies
  • the precoding information is jointly encoded and can also be encoded separately.
  • the method for transmitting and receiving precoding information divides a system bandwidth into at least two BPs, selects a subband in the BP, and obtains precoding information of the subband, thereby further improving precoding of the subband. Performance, selected sub-bands with more opportunities to be scheduled to the UE, thereby improving the overall performance of the system. . Simultaneous transmission of CQI information with precoding information can improve the frequency scheduling gain and facilitate accurate selection of modulation and coding modes.
  • an embodiment of the present invention provides a method for transmitting and receiving precoding information, where the system bandwidth is divided into at least two bandwidth parts BP, wherein each BP includes at least one subband, and the method includes:
  • the terminal selects one subband in the first BP and the second BP according to a second rule agreed in advance with the data sending end, and separately obtains precoding information of the two subbands.
  • the first BP and the second BP may be obtained according to a first rule agreed in advance, for example, according to different reported subframes being sequentially scanned in order of increasing frequency.
  • the corresponding subband and precoding information can be obtained according to the following method:
  • the second rule agreed by the terminal and the data sending end may be that the sub-bands in the BP are sequentially scanned in the order of increasing frequency, or the sub-bands in the BP may be sequentially scanned in the order of decreasing frequency, or The corresponding subband is obtained according to a function agreed in advance.
  • the pre-coding information on the sub-band is calculated based on the preset criterion 2, as shown in the formula (2).
  • the method may further include: calculating a channel of the subband based on the precoding information of the subband selected in the first BP. a quality indication CQI; calculating a channel quality indicator CQI of the subband based on the precoding information of the subband selected in the second BP;
  • determining subbands in the first BP and the second BP and their precoding information After CQI it can also include:
  • the terminal feeds back precoding information and CQI of the selected subband in the first BP and the second BP to the data transmitting end.
  • the terminal uses the sub-band precoding information (single codebook) of the first and second BPs obtained in step 801 or the corresponding frequency selective partial precoding information (double codebook structure, where the broadband precoding information can be Co-coded by separate feedback) and CQI, and fed back to the data transmitter through the PUCCH channel.
  • the precoding information of the subband and the CQI can also be fed back to the data transmitting end through the PUSCH channel.
  • the data sending end receives precoding information of the selected subband in the first BP and the second BP, and
  • the subband precoding information and the CQI selected in the first and second BPs are transmitted in the same subframe.
  • the sub-band precoding information and CQI of other BPs may be further described with the first and second BPs.
  • the wideband precoding information may be reported in the same subframe or in different subframes as the frequency selective precoding information.
  • the wideband precoding information may be jointly encoded with the above frequency selective precoding information or may be separately encoded.
  • the method for transmitting and receiving precoding information divides the system bandwidth into at least two BPs, selects a subband in the BP, and obtains precoding information of the subband, thereby further improving precoding of the subband. performance.
  • the selected sub-band is pre-agreed by the data sender and the terminal, so the sub-band identifier does not need to be sent, thereby saving overhead.
  • Simultaneously transmitting CQI information with precoding information can improve the frequency scheduling gain and also facilitate accurate selection of modulation and coding modes.
  • an embodiment of the present invention provides a method for transmitting and receiving precoding information, where the system bandwidth is divided into at least two BPs, and the method includes:
  • the UE selects one subband in the first BP and the second BP according to the preset criterion, and separately obtains precoding information of the two subbands.
  • the first BP and the second BP can be in accordance with the prior
  • the rule is obtained, for example, according to different reporting subframes, which are sequentially scanned in order of increasing frequency.
  • the corresponding subband and its precoding information can be obtained according to the following method:
  • the terminal calculates the subband label based on the preset criterion 1. , as shown in formula (1). Further, after the selected sub-band is obtained, the pre-coding information on the sub-band is calculated based on the preset criterion 2, as shown in the formula (2). Alternatively, the sub-band label is calculated based on the preset criterion 3. And the precoding matrix indication, as shown in equation (3). It should be further noted that the broadband precoding information can also be calculated based on the preset criterion 4 as shown in the formula (4).
  • the method may further include:, based on the precoding information of the subbands selected in the first and second BPs, in the selected The CQI is calculated on all subbands. It is to be noted that the seventh embodiment differs from the present embodiment in that the seventh embodiment calculates the CQI on each of the selected sub-bands.
  • the terminal feeds back the subband identifier selected in the first and second BPs, and the precoding information of the subband and the CQI of all the selected subbands to the data sending end.
  • the precoding information of the subband may be a precoding matrix of the subband indicating a PMI (for a single codebook) or a frequency selective part of the precoding information (if the precoding matrix may be broadband precoding information and frequency) Selective precoding information in two parts).
  • the terminal labels the subband obtained in step 901 and precoding information (single codebook) or corresponding frequency selective partial precoding information (double codebook structure, where the wideband precoding information can be separately fed back)
  • precoding information single codebook
  • frequency selective partial precoding information double codebook structure, where the wideband precoding information can be separately fed back
  • the CQI performs joint coding and feeds back to the data transmitting end through the PUCCH channel.
  • the subband identifier and the precoding information of the subband can also be fed back to the data transmitting end through the PUSCH channel.
  • the data transmitting end receives the subband identifier in the first and second BPs, and the subband precoding information and the CQI of all the selected subbands.
  • sub-band identifiers and sub-band precoding information of the first and second BPs described above are specifically described.
  • CQI are sent in the same subframe.
  • the subband identifiers and subband precoding information of other BPs may be transmitted in the same subframe as the subband identifiers of the first and second BPs, and the subband precoding information and the CQI, or may be transmitted in different subframes.
  • the wideband precoding information may be reported in the same subframe or in different subframes as the frequency selective precoding information.
  • the wideband precoding information may be jointly encoded with the above frequency selective precoding information or may be separately encoded.
  • the method for transmitting and receiving precoding information divides a system bandwidth into at least two BPs, selects a subband in the BP, and obtains precoding information of the subband, thereby further improving precoding of the subband. Performance, selected sub-bands with more opportunities to be scheduled to the UE, thereby improving the overall performance of the system. . Simultaneous transmission of CQI information with precoding information can improve the frequency scheduling gain and facilitate accurate selection of modulation and coding modes.
  • an embodiment of the present invention provides a method for transmitting and receiving precoding information, where the system bandwidth is divided into at least two bandwidth parts BP, wherein each BP includes at least one subband, and the method includes:
  • the terminal selects one subband in the first BP and the second BP according to a second rule agreed in advance with the data sending end, and separately obtains precoding information of the two subbands.
  • the first BP is sequentially scanned according to the first rule agreed in advance, for example, according to different reported subframes in the order of increasing frequency.
  • the corresponding subband and precoding information can be obtained according to the following method:
  • the second rule agreed by the terminal and the data sending end may be that the sub-bands in the BP are sequentially scanned in the order of increasing frequency, or the sub-bands in the BP may be sequentially scanned in the order of decreasing frequency, or The corresponding subband is obtained according to a function agreed in advance.
  • the pre-coding information on the sub-band is calculated based on the preset criterion 2, as shown in the formula (2).
  • the method may further include: selecting, according to the precoding information of the subbands selected in the first and second BPs
  • the CQI is calculated on all subbands; it should be particularly noted that Embodiment 8 is different from the present embodiment in that CQI is calculated separately for each subband selected based on the precoding information of the selected subband.
  • the method may further include:
  • the terminal feeds back the precoding information of the selected subband in the first BP and the second BP and the CQI of all the selected subbands to the data transmitting end.
  • the terminal obtains the sub-band precoding information (single codebook) of the first and second BPs obtained in step 1001 or the corresponding frequency selective partial precoding information (double codebook structure, where the broadband precoding information can be Co-coded by separate feedback) and CQI, and fed back to the data transmitter through the PUCCH channel.
  • the precoding information of the subband and the CQI can also be fed back to the data transmitting end through the PUSCH channel.
  • the data transmitting end receives the subband precoding information in the first BP and the second BP and the CQI of all the selected subbands.
  • first and second BP subband precoding information and the CQI are transmitted in the same subframe.
  • the subband precoding information and CQI of other BPs may be associated with the subbands of the first and second BPs.
  • the wideband precoding information may be in the same subframe or in different subframes as the frequency selective precoding information. Reported.
  • the wideband precoding information may be jointly encoded with the above frequency selective precoding information or may be separately encoded.
  • the method for transmitting and receiving precoding information divides the system bandwidth into at least two BPs, selects a subband in the BP, and obtains precoding information of the subband, thereby further improving precoding of the subband. performance.
  • the selected sub-band is pre-agreed by the data sending end and the terminal, so the sub-band identification does not need to be sent, thereby saving overhead.
  • Simultaneously transmitting CQI information with precoding information can improve the frequency scheduling gain and also facilitate accurate selection of the modulation and coding mode.
  • the wideband precoding information can be further protected during transmission to improve the reliability of the wideband precoding information.
  • This embodiment provides a method for feeding back broadband precoding information
  • an embodiment of the present invention provides a method for transmitting and receiving precoding information, where the method includes:
  • the terminal calculates precoding information (referred to as wideband precoding information) on the entire system bandwidth based on preset criteria.
  • the terminal can calculate the broadband precoding information based on the preset criterion 4, as shown by the formula (4).
  • the method may further include:
  • the terminal feeds back the broadband precoding information to the data sending end.
  • the terminal broadband precoding information is encoded and fed back to the data transmitting end through the PUCCH channel.
  • the wideband precoding information can also be fed back to the data transmitting end through the PUSCH channel.
  • the wideband precoding information is not jointly encoded with other information such as CQI or RI ( Rank Indicator Rank Indicator) information.
  • the data transmitting end receives the broadband precoding information.
  • the wideband precoding information may be reported in the same subframe or in different subframes as the frequency selective precoding information.
  • the method for transmitting and receiving precoding information according to the embodiment of the present invention separately transmits and receives the wideband precoding information, thereby improving the reliability of the wideband precoding information, thereby reducing error propagation when used in combination with the subband precoding information. .
  • the subband precoding information and the CQI transmission and reception may be configured by the upper layer as one of the precoding information and the CQI. Send, or configured to send and receive at the same time.
  • the CQI is calculated based on the newly reported sub-band pre-coding information, otherwise, it is calculated based on the newly reported wide-band pre-coding information.
  • the high-level configuration pre-coding information When the high-level configuration pre-coding information is separately transmitted, it may be performed according to any one of the embodiments 1-4.
  • the pre-coding information and the CQI are configured to be simultaneously transmitted, the method may be performed according to any one of the embodiments 5-6. .
  • the method for transmitting and receiving precoding information and CQI according to the embodiment of the present invention can improve the flexibility of system configuration.
  • an embodiment of the present invention provides a method for transmitting and receiving precoding information, where the system bandwidth is divided into at least one bandwidth part BP, and the subband in this embodiment is a virtual subband, and the virtual sub-band
  • the band is equal in size to BP, and the virtual subband may be the same or different in size from the actual system defined subband.
  • the method includes:
  • the terminal acquires precoding information of the first subband, that is, the first BP, according to a preset criterion.
  • the first BP may be obtained according to a pre-agreed rule, for example, according to different reported subframes being sequentially scanned in order of increasing frequency.
  • the pre-coding information of the first sub-band is calculated according to the preset criterion 5, as shown in the formula (5).
  • denotes a codeword in the set of precoding matrices W.
  • BP-index is the cable of BP
  • the first sub-band label is equal to the index of BP—e. Jnckx, ⁇ ) represents the first sub-band ⁇ _ ⁇ and the objective function of the pre-encoding matrix ⁇ corresponding to the preset criterion 5.
  • the foregoing preset criterion 5 may be a throughput maximization criterion
  • the target function corresponding to the criterion may be a throughput maximization function, which may be implemented based on information capacity calculation, or may be based on Mutual information or mutual information deformation (such as the weight of mutual information) and so on.
  • the ⁇ in (5) can be selected from a single codebook C.
  • ⁇ in (5) may also be a function of two matrices, where a wideband precoding matrix is derived from the codebook CI; a frequency selective precoding matrix is derived from the codebook C2. And 2 are respectively used to obtain a matrix and a matrix from the codebook C1 and the codebook C2 index, and the wideband precoding matrix indication and the frequency selective precoding matrix indication corresponding to Q at this time are respectively ⁇ and 2 .
  • 2 is precoding information corresponding to the first subband _ ⁇ ex .
  • broadband precoding information. can be selected individually by equation (4).
  • the method further includes: 1202: The terminal feeds back the precoding information of the first subband to the data sending end.
  • the terminal obtains the precoding information (single codebook) of the first subband obtained in step 1201 or the corresponding frequency selective partial precoding information (double codebook structure, where the broadband precoding information can be separately fed back)
  • the coding is performed and fed back to the data transmitting end through the PUCCH channel.
  • it can also be fed back to the data sender through the PUSCH channel.
  • the data sending end receives the precoding information of the first subband.
  • the above BP may contain a subband of an actual system definition, or may contain a plurality of subbands defined by an actual system.
  • the wideband precoding information may be reported in the same subframe or in different subframes as the first subband precoding information.
  • the method for transmitting and receiving precoding information divides the system bandwidth into at least one BP, acquires and feeds back precoding information of the subband, and further improves the precoding of the system.
  • an embodiment of the present invention provides a method for transmitting and receiving precoding information, where the system bandwidth is divided into at least one bandwidth part BP, and the subband in this embodiment is a virtual subband.
  • the virtual subband is equal in size to BP, and the virtual subband may be the same or different in size from the actual system defined subband.
  • the method includes:
  • the terminal acquires precoding information of the first subband, that is, the first BP, according to a preset criterion, and calculates a CQI of the first subband based on the precoding information of the first subband.
  • the first BP may be obtained according to a pre-agreed criterion, such as sequentially scanning according to different reported subframes in order of increasing frequency.
  • pre-coding information on the first sub-band is calculated based on the preset criterion 5, as shown in the formula (5).
  • calculating a CQI of the first subband based on the precoding information of the first subband that is, the CQI calculation assumes that the first subband uses precoding information of the first subband.
  • the method may further include:
  • the terminal feeds back the precoding information of the first subband and the CQI of the first subband to the data sending end.
  • the terminal obtains the precoding information (single codebook) of the first subband obtained in step 1301 or the corresponding frequency selective partial precoding information (double codebook structure, where the broadband precoding information can be separately fed back) Encoding with CQI, and feeding back to the data transmitting end through the PUCCH channel. Of course, it can also be fed back to the data transmitting end through the PUSCH channel.
  • the data sending end receives the precoding information of the first subband and the CQI of the first subband.
  • the above BP may contain a subband of an actual system definition, or may contain a plurality of subbands defined by an actual system.
  • the wideband precoding information may be reported in the same subframe or in different subframes as the first subband precoding information.
  • the method for transmitting and receiving precoding information divides the system bandwidth into at least one BP, acquires and feeds back the precoding information of the subband and the CQI of the subband, and further improves the precoding performance of the system. It is convenient to implement the selection of frequency domain scheduling and modulation and coding modes.
  • an embodiment of the present invention provides a method for transmitting and receiving precoding information, where The system bandwidth is divided into at least one bandwidth part BP.
  • the sub-band in this embodiment is a virtual sub-band, and the virtual sub-band is equal in size to the BP, and the virtual sub-band can be the same as the actual system-defined sub-band size. different.
  • the method includes:
  • the terminal acquires precoding information of each subband in the system, that is, each BP based on a preset criterion, and calculates a broadband CQI on a system bandwidth based on precoding information of each subband.
  • the precoding information on each subband is calculated based on the preset criterion 5, as shown in the formula (5). Further, the wideband CQI is calculated based on the precoding information of each subband. That is, the CQI calculation assumes that each subband uses the precoding information of each of the subbands.
  • the method may further include:
  • the terminal feeds back the precoding information of each subband and the broadband CQI to the data sending end. Specifically, the terminal obtains precoding information (single codebook) or corresponding frequency selective partial precoding information (double codebook structure, where the wideband precoding information can be separately fed back) of each subband obtained in step 1401.
  • the wideband CQI is encoded and fed back to the data transmitting end through the PUCCH channel. Of course, it can also be fed back to the data transmitting end through the PUSCH channel.
  • the data transmitting end receives precoding information and a wideband CQI of each subband.
  • the above BP may contain a subband of an actual system definition, or may contain a plurality of subbands defined by an actual system.
  • the wideband precoding information may be reported in the same subframe or in different subframes as the BP precoding information.
  • the method for transmitting and receiving precoding information divides the system bandwidth into at least one BP, acquires and feeds back the precoding information of the subband and the wideband CQI, further improves the precoding performance of the system, and is convenient to implement. Frequency domain scheduling and modulation coding options.
  • an embodiment of the present invention provides a method for transmitting and receiving precoding information, where the system bandwidth is divided into at least two bandwidth parts BP, and the subband in this embodiment is a virtual subband.
  • the virtual subband is equal in size to BP, and the virtual subband may be the same or different in size from the actual system defined subband.
  • the method includes:
  • the terminal acquires precoding information of the first subband, that is, the first BP, and the second subband, that is, the second BP, according to a preset criterion.
  • the first and second BPs may be sequentially scanned according to the sequence of increasing frequency according to different reported subframes, or may be obtained according to other previously agreed rules.
  • the pre-coding information on the first and second sub-bands is calculated based on the preset criterion 5, as shown in the formula (5).
  • the method further includes:
  • the terminal feeds back the precoding information of the first and second subbands to the data sending end.
  • the terminal obtains precoding information (single codebook) of the first and second subbands obtained in step 1501 or corresponding frequency selective partial precoding information (double codebook structure, where the broadband precoding information can pass
  • precoding information single codebook
  • double codebook structure where the broadband precoding information can pass
  • the feedback is performed separately, and is fed back to the data transmitting end through the PUCCH channel. Of course, it can also be fed back to the data transmitting end through the PUSCH channel.
  • the data sending end receives the precoding information of the first and second subbands.
  • the above BP may contain a subband of an actual system definition, or may contain a plurality of subbands defined by an actual system.
  • the wideband precoding information may be reported in the same subframe or in different subframes as the subband precoding information.
  • the method for transmitting and receiving precoding information divides the system bandwidth into at least two BPs, acquires and feeds back BP precoding information, and further improves the precoding of the system.
  • an embodiment of the present invention provides a method for transmitting and receiving precoding information.
  • the system bandwidth is divided into at least one bandwidth part BP, and all BPs are divided into at least one group.
  • the subband in this embodiment is a virtual subband, and the virtual subband is equal in size to the BP, and the virtual subband is actually The system-defined subband sizes can be the same or different.
  • the method includes:
  • the terminal acquires precoding information of each subband in the first group of subbands according to a preset criterion.
  • Each of the first sub-bands is equivalent to one BP, and the BPs corresponding to the first sub-bands may be sequentially scanned according to the order of increasing frequency, or may be obtained according to other previously agreed rules.
  • the pre-coding information of each sub-band in the first group of sub-bands is calculated based on the preset criterion 5, as shown in the formula (5).
  • the method may further include:
  • the terminal feeds back precoding information of each subband of the first group of subbands to the data sending end. Specifically, the terminal obtains precoding information (single codebook) or corresponding frequency selective partial precoding information of each subband of the first group of subbands obtained in step 1601 (double codebook structure, where the broadband precoding information may be The encoding is performed by separate feedback), and is fed back to the data transmitting end through the PUCCH channel. Of course, it can also be fed back to the data transmitting end through the PUSCH channel.
  • the data sending end receives precoding information of each subband of the first group of subbands.
  • the above BP may contain a subband of an actual system definition, or may contain a plurality of subbands defined by an actual system.
  • the wideband precoding information may be reported in the same subframe or in different subframes as the subband precoding information of the first group of subbands.
  • the method for transmitting and receiving precoding information divides the system bandwidth into at least one BP, and the packet obtains and feeds back the precoding information of the subband, thereby further improving the precoding performance of the system.
  • an embodiment of the present invention provides a method for transmitting and receiving precoding information.
  • the system bandwidth is divided into at least two bandwidth parts BP, and all BPs are divided into at least two groups.
  • the sub-band in this embodiment is a virtual sub-band, and the virtual sub-band is equal in size to the BP, and the virtual sub-band may be the same or different in size from the actual system-defined sub-band.
  • the method includes: 1701: The terminal acquires precoding information of each subband in the first and second groups of subbands according to a preset criterion.
  • Each of the first and second sets of sub-bands is equivalent to one BP, and the BPs corresponding to the first and second sets of sub-bands may be sequentially scanned according to an order of increasing frequency, or may be other
  • the rules agreed in advance are obtained.
  • the precoding information of each subband in the first and second groups of subbands is calculated based on the preset criterion 5, as shown in the formula (5).
  • the method further includes:
  • the terminal feeds back precoding information of each subband of the first and second groups of subbands to the data sending end.
  • the terminal obtains precoding information (single codebook) or corresponding frequency selective partial precoding information of each subband of the first and second group subbands obtained in step 1701 (double codebook structure, at this time, the broadband preamble
  • the coding information can be encoded by separate feedback) and fed back to the data transmitter via the PUCCH channel. Of course, it can also be fed back to the data transmitting end through the PUSCH channel.
  • the data sending end receives precoding information of each subband of the first and second groups of subbands.
  • the above BP may contain a subband of an actual system definition, or may contain a plurality of subbands defined by an actual system.
  • the wideband precoding information may be reported in the same subframe or in different subframes as the precoding information of each of the first and second subbands.
  • the method for transmitting and receiving precoding information divides the system bandwidth into at least two BPs, and obtains and feeds back the precoding information of the subband, thereby further improving the precoding performance of the system.
  • an embodiment of the present invention provides a method for transmitting and receiving precoding information, where the system bandwidth is divided into at least one bandwidth part BP, and all BPs are divided into at least one group.
  • the sub-band in this embodiment is a virtual sub-band, and the virtual sub-band is equal in size to the BP, and the virtual sub-band may be the same or different in size from the actual system-defined sub-band.
  • the method includes: 1801: The terminal acquires precoding information of each subband in the first group of subbands according to a preset criterion.
  • Each of the first group of subbands is equivalent to one BP, and the BPs corresponding to the first group of subbands may be sequentially scanned according to an order of increasing frequency, or may be obtained according to other previously agreed rules. Specifically, the precoding information of each subband in the first group of subbands is calculated based on the preset criterion 5, as shown in the formula (5).
  • the method includes: calculating a CQI on the first set of subbands.
  • the CQI is calculated based on the respective precoding information of the first set of subbands, referred to as the CQI of the first set of subbands.
  • the method may further include:
  • the terminal feeds back the CQI of the first group of subbands and the precoding information of each subband to the data sending end.
  • the terminal obtains the CQI of the first group of subbands obtained in step 1801 and the precoding information (single codebook) of each subband or the corresponding frequency selective partial precoding information (double codebook structure, at this time, the broadband preamble
  • the coding information can be encoded by separate feedback) and fed back to the data transmitter via the PUCCH channel. Of course, it can also be fed back to the data transmitting end through the PUSCH channel.
  • the data sending end receives the CQI of the first group of subbands and precoding information of each subband.
  • the above BP may contain a subband of an actual system definition, or may contain a plurality of subbands defined by an actual system.
  • the wideband precoding information may be reported in the same subframe or in different subframes as the CQI of the first group BP and the BP precoding information.
  • the method for transmitting and receiving precoding information divides the system bandwidth into at least one BP, and the packet acquires and feeds back the precoding information of the subband, thereby further improving the precoding performance of the system. Further providing a set of BP CQIs facilitates frequency domain scheduling and modulation and coding mode selection.
  • Example 20 Referring to FIG. 19, an embodiment of the present invention provides a method for transmitting and receiving precoding information.
  • the system bandwidth is divided into at least one bandwidth part BP, and all BPs are divided into at least one group.
  • the sub-band in this embodiment is a virtual sub-band, and the virtual sub-band is equal in size to the BP, and the virtual sub-band may be the same or different in size from the actual system-defined sub-band.
  • the method includes:
  • the terminal adopts any one of Embodiments 17-18 to transmit precoding information of all groups of subbands in the system by using the same subframe or different subframes.
  • the method further includes:
  • the terminal calculates a wideband CQI based on precoding information of each subband described in 1901. Specifically, the wideband CQI is calculated based on the assumption that each of the sets of subbands is respectively using respective precoding information.
  • the method may further include:
  • the terminal acquires broadband precoding information based on preset criteria. Specifically, the terminal may calculate the broadband precoding information based on the preset criterion 4, as shown in the formula (4).
  • the method may further include:
  • the terminal feeds back the broadband CQI in step 1902 and the broadband precoding information in step 1903 to the data transmitting end.
  • the terminal encodes the wideband CQI obtained in step 1902 and the wideband precoding information in step 1903, and feeds back to the data transmitting end through the PUCCH channel. Of course, it can also be fed back to the data transmitting end through the PUSCH channel.
  • the data transmitting end receives precoding information of all groups of subbands in the same or different subframe transmission system.
  • the data sending end receives the broadband CQI and the broadband precoding information sent by the terminal.
  • the wideband CQI and the wideband precoding information described in step 1906 and steps respectively are identical to the wideband precoding information described in step 1903.
  • the broadband precoding information acquired by the terminal in step 1903 can only be used as part of the broadband precoding information of the precoding information of the subband obtained by the terminal.
  • the precoding information of each group of subbands in step 1901 can only use the latest wideband precoding information that can be reported at the terminal when acquiring the precoding information of each group of subbands.
  • the wideband CQI and the wideband precoding information may be reported in the same subframe or in different subframes as the precoding information of each group of subbands.
  • the above BP may contain a subband of an actual system definition, or may contain a plurality of subbands defined by an actual system.
  • the method for transmitting and receiving precoding information divides the system bandwidth into at least one BP, and the packet obtains and feeds back the precoding information of the subband, thereby further improving the precoding performance of the system.
  • the wideband CQI is fed back based on all sets of subband precoding information, which facilitates the selection of more precise modulation coding modes.
  • Broadband precoding information is provided while providing wideband CQI, providing common broadband precoding information for each group of subbands.
  • an embodiment of the present invention provides an apparatus for transmitting precoding information, which is applicable to a system in which a bandwidth is divided into at least one bandwidth part BP, where each BP includes at least one subband,
  • the device includes:
  • a subband selection unit 2001 configured to select a subband in the first BP according to a preset criterion or a previously agreed rule
  • the information obtaining unit 2002 is configured to acquire precoding information of one subband selected by the subband selection unit in the first BP;
  • the information sending unit 2003 is configured to send precoding information of one subband selected in the first BP acquired by the information acquiring unit.
  • the sub-band selection unit 2001 is further configured to perform the second according to a preset criterion or a previously agreed rule. Select a subband in BP;
  • the information acquiring unit 2002 is further configured to acquire precoding information of one subband selected by the subband selection unit in the second BP;
  • the information sending unit 2003 is further configured to send precoding information of one subband selected in the second BP acquired by the information acquiring unit.
  • the information sending unit 2003 is specifically configured to send, by using a physical uplink control channel (PUCCH), precoding information of one subband selected in the first BP; and select, by using the PUCCH, the first BP.
  • the precoding information of the subband of the subband is transmitted in the same subframe or in a different subframe.
  • PUCCH physical uplink control channel
  • the subband selection unit 2001 is specifically configured to select one subband with the largest capacity or throughput in the first BP; or select one subband in the first BP according to a preset reporting sequence.
  • the information acquiring unit 2002 is further configured to acquire the CQI of the selected subband in the first BP according to the precoding information of the selected subband in the first BP;
  • the information sending unit 2003 is further configured to send, by using the PUCCH, a CQI of the subband selected in the first BP in a same subframe in which the precoding information of the first BP selected subband is located.
  • the information sending unit 2003 is further configured to jointly encode the CQI of the selected subband in the first BP and the precoding information of the selected subband in the first BP, and obtain the jointly encoded information. Transmitting, by the PUCCH, the jointly encoded information in the same subframe; or precoding information of the CQI of the selected subband in the first BP and the subband selected in the first BP, and The identification information of the selected sub-bands in the first BP is jointly encoded to obtain the jointly encoded information.
  • the PUCCH is used to transmit the jointly encoded information in the same subframe.
  • the device in Embodiment 21 may specifically be a terminal.
  • the apparatus for transmitting precoding information divides the system bandwidth into at least one BP, selects a subband in the BP, and obtains precoding information of the subband, further improves precoding performance of the subband, and selects The child has more opportunities to be dispatched to the UE, thus improving the overall system Performance.
  • an embodiment of the present invention provides an apparatus for receiving precoding information, which is applicable to a system in which a bandwidth is divided into at least one bandwidth part BP, where each BP includes at least one subband,
  • the device includes:
  • the information receiving unit 2100 is configured to receive precoding information of a subband selected by the terminal in the first BP.
  • the sub-band selected in the first BP is selected by the terminal according to a preset criterion or a previously agreed rule.
  • the apparatus for receiving precoding information further divides the system bandwidth into at least one BP, and the receiving terminal selects the subband in the BP and obtains the precoding information of the subband, thereby further improving the precoding of the subband. Performance, selected sub-bands with more opportunities to be scheduled to the UE, thereby improving the overall performance of the system.
  • the data transmitting end in the foregoing embodiment may be a NodeB (Node B), a BS (Base station), a home base station, or a relay station.
  • the terminal may be a UE (User Equipment), MS (Mobile). Station, mobile station).
  • the apparatus for transmitting and receiving precoding information divides a system bandwidth into at least two BPs, selects a subband in the BP, and obtains precoding information of the subband, thereby further improving precoding of the subband. Performance, selected sub-bands with more opportunities to be scheduled to the UE, thereby improving the overall performance of the system.
  • All or part of the technical solutions provided by the above embodiments may be implemented by software programming, and the software programs thereof are stored in a readable storage medium such as a hard disk, an optical disk or a floppy disk in a computer.

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Description

一种预编码信息的发送和接收方法及装置 技术领域
本发明涉及通信技术领域, 特别涉及一种预编码信息的发送和接收的方 法和装置。
背景技术
随着通信技术的不断发展, 为了改善数据传输的性能, 数据发送端 (如
NodeB (节点 B )、 BS ( Base station, 基站)等)可以根据终端(如 UE ( User Equipment, 用户设备)、 MS ( Mobile Station, 移动台)等)反馈的预编码信 息 (如 PMI ( Precoding Matrix Indicator, 预编码矩阵指示) 以及本地预存的 码本, 对待发送数据进行预处理后再发送到终端, 这样可以使数据发送过程 自适应信道状态的变化, 从而提高数据传输的性能。 因此, 如何发送和接收 上述预编码信息至关重要。
Release 8 , 第三代伙伴项目长期演进发布版本 8 )系统采用单一码本, 其预编 码矩阵由单个 PMI ( precoding matrix indicator, 预编码矩阵指示) 索引, 可 以分别通过物理上行控制信道(PUCCH )和物理上行共享信道(PUSCH )进 行周期性和非周期性上报。
现有 LTE系统按照不同的频域粒度反馈预编码信息。 系统带宽被划分为
N个子带。 PUCCH仅能反馈宽带 PMI (整个系统带宽使用该单一 PMI, 从而 各个子带使用相同的 PMI )。
在实现本发明的过程中, 发明人发现现有技术至少存在以下问题: 现有 LTE-R8系统采用的 PUCCH周期性上报模式开销小,但是容量有限, 只能传输宽带 PMI信息。 因此, 有必要进一步研究上报模式以及使用的报告 类型, 以提高系统性能。 发明内容
本发明实施例提供了一种预编码信息的发送和接收方法及装置, 以提高 预编码的性能,
一方面, 本发明的实施例提供了一种预编码信息的发送方法:
系统带宽被划分为至少 1个带宽部分 BP, 其中每个 BP包含至少一个子 带, 所述方法包括:
按照预设的准则或事先约定的规则在第一 BP中选取一个子带; 获取并发送在所述第一 BP中选取的一个子带的预编码信息。
一方面, 本发明实施例提供了一种预编码信息的接收方法,
系统带宽被划分为至少 1个带宽部分 BP, 其中每个 BP包含至少一个子 带, 所述方法包括:
接收终端发送的在第一 BP中选取的一个子带的预编码信息;
其中,所述在第一 BP中选取的子带为所述终端按照预设的准则或事 先约定的规则选取的。
另一方面, 本发明实施例提供了一种预编码信息的发送装置, 适用于系 统带宽被划分为至少 1个带宽部分 BP, 其中每个 BP包含至少一个子带的场 景, 包括:
子带选择单元,用于按照预设的准则或事先约定的规则在第一 BP中选取 一个子带;
信息获取单元,用于获取所述子带选择单元在所述第一 BP中选取的一个 子带的预编码信息;
信息发送单元,用于发送所述信息获取单元获取的在所述第一 BP中选取 的一个子带的预编码信息。
另一方面, 本发明实施例提供了一种预编码信息的接收装置, 适用于系 统带宽被划分为至少 1个带宽部分 BP, 其中每个 BP包含至少一个子带的场 景, 包括: 信息接收单元,用于接收终端发送的在第一 BP中选取的一个子带的预编 码信息;
其中,所述在第一 BP中选取的子带为所述终端按照预设的准则或事先约 定的规则选取的。
本发明实施例提供的技术方案将系统带宽划分为至少一个 BP, 选择 BP 中的子带并获取该子带的预编码信息,进一步提高了子带的预编码性能, 从而 提高了系统的整体性能。 附图说明
图 1是本发明实施例 1提供的一种发 i 和接收预编码信息的方法流程图; 图 2是本发明实施例 2提供的一种发 i 和接收预编码信息的方法流程图; 图 3是本发明实施例 3提供的一种发 i 和接收预编码信息的方法流程图; 图 4是本发明实施例 4提供的一种发 i 和接收预编码信息的方法流程图; 图 5是本发明实施例 5提供的一种发 i 和接收预编码信息的方法流程图; 图 6是本发明实施例 6提供的一种发 i 和接收预编码信息的方法流程图; 图 7是本发明实施例 7提供的一种发 i 和接收预编码信息的方法流程图; 图 8是本发明实施例 8提供的一种发 i 和接收预编码信息的方法流程图; 图 9是本发明实施例 9提供的一种发 i 和接收预编码信息的方法流程图;
10是本发明实施例 10提供的一种发送和接收预编码信息的方法流程 图 11是本发明实施例 11提供的一种发送和接收预编码信息的方法流程 图 12是本发明实施例 13提供的一种发送和接收预编码信息的方法流程
13是本发明实施例 14提供的一种发送和接收预编码信息的方法流程 图; 图 14是本发明实施例 15提供的一种发送和接收预编码信息的方法流程 图;
图 15是本发明实施例 16提供的一种发送和接收预编码信息的方法流程 图;
图 16是本发明实施例 17提供的一种发送和接收预编码信息的方法流程 图;
图 17是本发明实施例 18提供的一种发送和接收预编码信息的方法流程 图;
图 18是本发明实施例 19提供的一种发送和接收预编码信息的方法流程 图;
图 19是本发明实施例 20提供的一种发送和接收预编码信息的方法流程 图;
图 20是本发明实施例 21提供的一种发送预编码信息的装置结构图; 图 21是本发明实施例 22提供的一种接收预编码信息的装置结构图。 具体实施方式
为使本发明的目的、 技术方案和优点更加清楚, 下面将结合附图对本发 明实施方式作进一步地详细描述。
实施例 1
参见图 1, 本发明实施例提供了一种发送预编码信息的方法, 所述系统带 宽被划分为至少 1个带宽部分 BP, 其中每个 BP包含至少一个子带, 所述方 法包括:
101 : 终端按照预设的准则在第一 BP中选取一个子带, 并获取该子带的 预编码信息。 其中选取的第一 BP可以是按照事先约定的规则得到的, 例如根 据不同的上报子帧按照频率增加的顺序依次扫描得到。
具体地, 假定该子帧上报对应的带宽部分为 BPj, 其中含有 Nj个子带。 终端基于预设的准则 1, 计算得到子带标号 具体如式(1 )所示:
Figure imgf000007_0001
其中 C ( )表示与预设的准则 1对应的子带 i的目标函数。 需要说明的是, 根据上述预设的准则 1在第一 BP中选取一个子带包括: 在第一 BP中选取容 量或吞吐量最大的一个子带。 例如预设的准则 1 为吞吐量最大化准则, 该准 则对应的目标函数可以是吞吐量最大化函数, 该吞吐量最大化函数可以是基 于信息容量计算实现, 也可以基于互信息或互信息的变形 (如互信息的加权) 等实现, 预设的准则为容量最大化准则的实施例与上类似, 此处不再赘述。
进一步地, 在得到选取的子带之后, 基于预设的准则 2计算该子带上的 预编码信息(这里, 子带标号。对应的子带的预编码信息可以是预编码矩阵指 示 j0 ), 具体如式(2 )所示:
Figure imgf000007_0002
其中 ^表示预编码矩阵集合 W中的一个码字。其中 /(。, )表示与预设的准则 2对应的子带。的预编码矩阵 ^的目标函数。 需要说明的是, 上述预设的准则
2 可以是吞吐量最大化准则, 该准则对应的目标函数可以是吞吐量最大化函 数, 该吞吐量最大化函数可以是基于信息容量计算实现, 也可以基于互信息 或互信息的变形 (如互信息的加权)等实现, 预设的准则 2 为容量最大化准 则的实施例与上类似, 此处不再赘述。
或者, 可以根据预设的准则 3在第一 BP中选取一个子带, 同时根据该预 设的准则 3获取该子带的预编码信息, 具体的, 如式(3 )所示, 子带标号 ^和 预编码矩阵指示 Q可以根据式(3 )联合选择得到:
Figure imgf000007_0003
需要进一步说明的是, 式(2 )或者(3 ) 中的 ^可以从单一码本 C中选 择, 此时, PMI= Q为子带标号 对应的子带的预编码信息。 此外, 式(2 ) 或者(3) 中的 也可以是两个矩阵 ,和 的函数, 其中 ,表示宽带预编码 矩阵, 来自于码本 CI; ^2表示频率选择性预编码矩阵, 来自于码本 C2。 和 Λ分别用于从码本 C1和码本 C2索引得到矩阵 Λ和矩阵 ^2,此时与 Q对应的 宽带预编码矩阵指示和频率选择性预编码矩阵指示分别为 ·。, 。 ·。,2; 此时, k,2 为子带标号。对应的子带的预编码信息。
需要进一步说明的是, 宽带预编码信息 1可以根据预设的准则 4, 具体 的通过式(4)单独选择
01 -arg max g(ffA1) (4)
A=0,...,|C|— l,A eC
其中^ ,表示宽带预编码矩阵集合 CI 中的一个码字, ^^ )表示与预设 的准则对应的宽带预编码矩阵 ^的目标函数。 需要说明的是, 上述预设的准 则 4可以是吞吐量最大化准则, 该准则对应的目标函数可以是吞吐量最大化 函数, 该吞吐量最大化函数可以是基于信息容量计算实现, 也可以基于互信 息或互信息的变形 (如互信息的加权)等实现。 预设的准则 4为容量最大化 准则的实施例与上类似, 此处不再赘述。
另外, 考虑到预编码矩阵对宽带预编码信息的依赖性, 可以进一步对宽 带预编码信息在传输过程中进行保护, 以提高宽带预编码信息的可靠性, 详 见实施例 11的描述。
进一步地, 参见图 1, 选择第一 BP中的一个子带以及获取所述第一 BP 中的一个子带的预编码信息之后, 还可以包括:
102: 终端将第一 BP中选取的子带的标识以及该子带的预编码信息反馈 给数据发送端。
具体地,终端将步骤 101中得到的子带标号。;以及预编码矩阵指示 Q (对 应单一码本)或者与 。对应的频率选择性预编码矩阵指示 2 (对应双码本结 构, 此时宽带预编码信息可以通过单独反馈)进行联合编码, 通过 PUCCH信 道反馈给数据发送端。 当然该子带标识以及子带的预编码信息也可以通过
PUSCH信道反馈给数据发送端。
103: 数据发送端接收第一 BP中的子带标识以及子带预编码信息。
需要说明的是,上述不同 BP的子带标识以及子带预编码信息可以在不同 的子帧进行发送。 宽带预编码信息 (如, 宽带预编码矩阵指示 ·。, J可以与频 率选择性预编码信息 (如, 频率选择性预编码矩阵指示 j0,2 )在同一子帧也可 以在不同的子帧上报。
本发明实施例所述的发送和接收预编码信息的方法, 将系统带宽划分为 至少一个 BP, 选择 BP中的子带并获取该子带的预编码信息, 进一步提高了 子带的预编码性能, 选取的子带有更多的机会被调度给 UE, 从而提高了系统 的整体性能。
实施例 2
参见图 2, 本发明实施例提供了一种发送和接收预编码信息的方法, 所述 系统带宽被划分为至少 1个带宽部分 BP, 其中每个 BP包含至少一个子带, 所述方法包括:
201 : 终端按照与数据发送端事先约定的规则确定在第一 BP中选择的一 个子带并获取该子带上的预编码信息。
具体地,终端与数据发送端事先约定的规则确定在第一 BP中选择的一个 子带,可以是根据不同的上报子帧按照频率增加的顺序依次扫描得到第一 BP, 按照频率增加的顺序依次扫描得到第一 BP内的子带,也可以是按照频率减小 的顺序依次扫描得到第一 BP内的子带,也可以是按照事先约定随机化函数得 到对应的子带。
进一步地, 在得到选取的子带之后, 基于预设的准则 2计算该子带上的 预编码信息, 具体如式(2 )所示。
进一步地, 参见图 2, 确定第一 BP中的子带及其预编码信息之后, 还可 以包括: 202: 终端将第一 BP中选择的子带的预编码信息反馈给数据发送端。 具体地, 终端将步骤 201 中得到的预编码信息 Λ (对应单一码本)或者 与 。对应的频率选择性部分预编码信息 2 (对应双码本结构, 此时宽带预编 码信息可以通过单独反馈)进行编码, 通过 PUCCH信道反馈给数据发送端。 当然该子带的预编码信息也可以通过 PUSCH信道反馈给数据发送端。
203: 数据发送端接收第一 BP中的子带预编码信息。
本发明实施例所述的发送和接收预编码信息的方法, 将系统带宽划分为 至少一个 BP, 选择 BP中的子带并获取该子带的预编码信息, 进一步提高了 子带的预编码性能。选取的子带和 BP的规则可以为数据发送端和终端事先约 定, 因此不需要发送该子带标识, 从而可以节省开销。
实施例 3
参见图 3, 本发明实施例提供了一种发送和接收预编码信息的方法, 所述 系统带宽被划分为至少 2个 BP, 所述方法包括:
301 : UE按照所述预设准则在第一 BP和第二 BP中分别选取一个子带并 分别获取两个子带的预编码信息。 其中选取的第一 BP和第二 BP可以根据事 先约定的规则得到, 例如根据不同的上报子帧按照频率增加的顺序依次扫描 得到。 具体地, 对于其中的每个 BPj, 可以按照以下方法得到对应的子带及其 预编码信息:
假定 BPj中含有 Nj个子带。终端基于预设的准则 1,计算得到子带标号。, 具体如式( 1 )所示。 进一步地, 在得到选取的子带之后, 基于预设的准则 2 计算该子带上的预编码信息, 具体如式(2 )所示。 或者, 终端基于预设的准 则 3得到子带标号 ,·。和预编码矩阵指示 Λ, 具体可以根据式( 3 )联合选择得 到。 终端基于预设的准则 4得到宽带预编码信息, 具体的可以按照式(4 )计 算得到。
其中, 本发明实施例中的第一 BP和第二 BP中的第一, 第二仅仅是为了 区别不同的 BP, 并不对 BP所处的位置, 顺序, 数量构成限定。 302: 终端将第一 BP中选择的子带标识以及相应子带的预编码信息和第 二 BP中选择的子带标识以及相应子带的预编码信息反馈给数据发送端。
需要说明的是,其中子带的预编码信息可以是子带的预编码矩阵指示 PMI (对于单一码本)或者预编码信息的频率选择性部分(如果预编码矩阵可以 为宽带预编码信息和频率选择性预编码信息两部分)。
具体地, 终端将步骤 301 中得到的子带标号以及预编码信息 (对于单一 码本)或者对应的频率选择性部分预编码信息 (双码本结构, 此时宽带预编 码信息可以通过单独反馈 )进行联合编码,通过 PUCCH信道反馈给数据发送 端。当然该子带标识以及子带的预编码信息也可以通过 PUSCH信道反馈给数 据发送端。
303: 数据发送端接收第一 BP中的子带标识以及相应子带预编码信息和 第二 BP中的子带标识以及相应子带预编码信息。
需要说明的是,上述第一和第二 BP的子带标识以及子带预编码信息可以 在相同的子帧发送。其它 BP的子带标识以及子带预编码信息可以与第一和第 二 BP 的子带标识以及子带预编码信息在相同的子帧进行发送,也可以在不同 的子帧发送。
需要说明的是, 宽带预编码信息可以与频率选择性预编码信息在同一子 帧也可以在不同的子帧上报。 宽带预编码信息可以与上述频率选择性预编码 信息联合编码, 也可以单独编码。
本发明实施例所述的发送和接收预编码信息的方法, 将系统带宽划分为 至少两个 BP, 选择 BP中的子带并获取该子带的预编码信息, 进一步提高了 子带的预编码性能, 选取的子带有更多的机会被调度给 UE, 从而提高了系统 的整体性能。
实施例 4
参见图 4, 本发明实施例提供了一种发送和接收预编码信息的方法, 所述 系统带宽被划分为至少 2个带宽部分 BP, 其中每个 BP包含至少一个子带, 所述方法包括:
401 : 终端按照与数据发送端事先约定的第二规则在第一 BP和第二 BP 中分别选取一个子带, 并分别获取这两个子带的预编码信息。 其中第一 BP和 第二 BP可以根据事先约定的第一规则得到,例如根据不同的上报子帧按照频 率增加的顺序依次扫描得到。
具体地, 对于其中的每个 BPj, 可以按照以下方法得到对应的子带以及预 编码信息:
具体地, 终端与数据发送端事先约定的第二规则可以是按照频率增加的 顺序依次扫描得到 BP内的子带,也可以是按照频率减小的顺序依次扫描得到 BP内的子带, 也可以是按照事先约定的函数得到对应的子带。
进一步地, 在得到选取的子带之后, 基于预设的准则 2计算该子带上的 预编码信息, 具体如式(2 )所示。
进一步地, 参见图 4, 确定第一 BP和第二 BP中的子带及其预编码信息 之后, 还可以包括:
402: 终端将第一 BP和第二 BP中选择的子带的预编码信息反馈给数据 发送端。
具体地, 终端将步骤 401中得到的第一和第二 BP的子带预编码信息(对 于单一码本)或者对应的频率选择性部分预编码信息 (对于双码本结构, 此 时宽带预编码信息可以通过单独反馈 )进行联合编码,通过 PUCCH信道反馈 给数据发送端。当然子带的预编码信息也可以通过 PUSCH信道反馈给数据发 送端。
403: 数据发送端接收第一 BP和第二 BP中选择的的子带的预编码信息。 需要特别说明的是,上述第一和第二 BP中选择的的子带的预编码信息在 相同的子帧发送。 其它 BP的子带预编码信息可以与第一和第二 BP的子带预 需要进一步说明的是, 宽带预编码信息可以与频率选择性预编码信息在 同一子帧也可以在不同的子帧上报。 宽带预编码信息可以与上述频率选择性 预编码信息联合编码, 也可以单独编码。
本发明实施例所述的发送和接收预编码信息的方法, 将系统带宽划分为 至少 2个 BP, 选择 BP中的子带并获取该子带的预编码信息, 进一步提高了 子带的预编码性能。 选取的子带为数据发送端和终端事先约定, 因此不需要 发送该子带标识, 从而可以节省开销。
实施例 5
参见图 5, 本发明实施例提供了一种发送预编码信息的方法, 所述系统带 宽被划分为至少 1个带宽部分 BP, 其中每个 BP包含至少一个子带, 所述方 法包括:
501 : 终端按照预设的准则在第一 BP中选取一个子带并获取该子带上的 预编码信息。 其中第一 BP可以根据事先约定的规则得到, 例如根据不同的上 报子帧按照频率增加的顺序依次扫描得到。
具体地, 假定该子帧上报对应的带宽部分为 BPj, 其中含有 Nj个子带。 终 端基于预设的准则 1, 计算得到子带标号 ,·。, 具体如式(1 )所示。
进一步地, 在得到选取的子带之后, 基于预设的准则 2计算该子带上的预 编码信息, 具体如式(2 )所示。 或者, 基于预设的准则 3计算子带标号 ^和 预编码矩阵指示 Q, 具体如式(3 )所示。 需要进一步说明的是, 还可以基于 预设的准则 4计算宽带预编码信息 ·。 , 具体如式(4 )所示。
进一步地, 选择第一 BP中的子带以及预编码信息之后, 还可以包括: 基 于所述在所述第一 BP中选取的一个子带的预编码信息计算该子带的信道质 量指示 CQI;
进一步地,参见图 5,选择第一 BP中的子带以及预编码信息和 CQI之后, 还可以包括:
502:终端将第一 BP中选取的子带的标识以及该子带的预编码信息和 CQI 反馈给数据发送端。
具体地, 终端将步骤 501中得到的子带标号 ζ·。以及预编码信息 Λ (单一码 本)或者与 。对应的频率选择性部分预编码信息 ·。,2 (双码本结构, 此时宽带 预编码信息可以通过单独反馈 ) 以及 CQI进行联合编码, 通过 PUCCH信道 反馈给数据发送端。 当然该子带标识以及子带的预编码信息以及 CQI也可以 通过 PUSCH信道反馈给数据发送端。
503:数据发送端接收第一 BP中的子带标识以及子带预编码信息和 CQI。 需要特别说明的是,上述不同 BP的子带表示以及子带预编码信息在不同 的子帧进行发送。 需要进一步说明的是, 宽带预编码信息可以与频率选择性 预编码信息在同一子帧也可以在不同的子帧上报。
本发明实施例所述的发送和接收预编码信息的方法, 将系统带宽划分为 至少一个 BP, 选择 BP中的子带并获取该子带的预编码信息, 进一步提高了 子带的预编码性能, 选取的子带有更多的机会被调度给 UE, 从而提高了系统 的整体性能。 与预编码信息同时发送 CQI信息, 可以提高频率调度增益, 同 时也便于准确选择调制编码方式。
实施例 6
参见图 6, 本发明实施例提供了一种发送和接收预编码信息的方法, 所述 系统带宽被划分为至少 1个带宽部分 BP, 其中每个 BP包含至少一个子带, 所述方法包括:
601 : 终端按照与数据发送端事先约定的第二规则确定在第一 BP中选择 的一个子带并获取该子带上的预编码信息。其中第一 BP根据事先约定的第一 规则, 如根据不同的上报子帧按照频率增加的顺序依次扫描得到。
具体地, 终端与数据发送端事先约定的第二规则可以是按照频率增加的 顺序依次扫描得到 BP内的子带,也可以是按照频率减小的顺序依次扫描得到 BP内的子带, 也可以是按照事先约定随机化函数得到对应的子带。
进一步地, 在得到选取的子带之后, 基于预设的准则 2计算该子带上的 预编码信息, 具体如式(2 )所示。
进一步地, 选择第一 BP 中的子带以及预编码信息之后, 还可以包括: , 基于所述在所述第一 BP 中选取的一个子带的预编码信息计算该子带的信道 质量指示 CQI;
进一步地,参见图 6,确定第一 BP中的子带及其预编码信息和 CQI之后, 还可以包括:
602: 终端将第一 BP中选择的子带的预编码信息和 CQI反馈给数据发送 端。
具体地, 终端将步骤 601中得到的预编码信息 。(单一码本)或者与 ^对 应的频率选择性部分预编码信息 ·。,2 (双码本结构, 此时宽带预编码信息可以 通过单独反馈 )和 CQI进行联合编码, 通过 PUCCH信道反馈给数据发送端。
603: 数据发送端接收第一 BP中的子带预编码信息和 CQI。
本发明实施例所述的发送和接收预编码信息的方法, 将系统带宽划分为 至少一个 BP, 选择 BP中的子带并获取该子带的预编码信息, 进一步提高了 子带的预编码性能。 选取的子带为数据发送端和终端事先约定, 因此不需要 发送该子带标识, 从而可以节省开销。 与预编码信息同时发送 CQI信息, 可 以提高频率调度增益, 同时也便于准确选择调制编码方式。
实施例 7
参见图 7, 本发明实施例提供了一种发送和接收预编码信息的方法, 所述 系统带宽被划分为至少 2个 BP, 所述方法包括:
701 : UE按照所述预设的准则在第一 BP和第二 BP中分别选取一个子带 并分别获取两个子带的预编码信息。 其中第一 BP和第二 BP可以按照事先约 定的规则得到, 如根据不同的上报子帧按照频率增加的顺序依次扫描得到, 具体地, 对于其中的每个 BPj, 可以按照以下方法得到对应的子带及其预编码 信息:
假定 BPj中含有 Nj个子带。终端基于预设的准则 1,计算得到子带标号。, 具体如式( 1 )所示。 进一步地, 在得到选取的子带之后, 基于预设的准则 2 计算该子带上的预编码信息, 具体如式(2 )所示。 或者, 子带标号。和预编 码矩阵指示 可以根据式( 3 )联合选择得到。宽带预编码信息可以按照式( 4 ) 计算得到。
进一步地, 选择第一、 第二 BP中的子带以及预编码信息之后, 还可以包 括: ,基于所述在所述第一 BP 中选取的子带的预编码信息计算该子带的信道 质量指示 CQI;基于所述在所述第二 BP中选取的子带的预编码信息计算该子 带的信道质量指示 CQI;
702: 终端将第一 BP中选择的子带标识以及子带的预编码信息和 CQI和 第二 BP中选择的子带标识以及子带的预编码信息和 CQI反馈给数据发送端。
需要说明的是, 对于单一码本, 其中子带的预编码信息可以是子带的预 编码矩阵指示 PMI, 对于双码本(即预编码矩阵可以为宽带预编码矩阵和频 率选择性预编码矩阵两部分 )其中子带的预编码信息可以是预编码信息的频 率选择性部分。
具体地,终端将步骤 701中得到的子带标号以及子带的预编码信息和 CQI 进行联合编码,通过 PUCCH信道反馈给数据发送端。 当然该子带标识以及子 带的预编码信息也可以通过 PUSCH信道反馈给数据发送端。
703: 数据发送端接收第一 BP中的子带标识以及子带预编码信息和 CQI 和第二 BP中的子带标识以及子带预编码信息和 CQI。
需要特别说明的是,上述第一和第二 BP的子带标识以及对应的子带预编 码信息和 CQI可以在相同的子帧发送。 其它 BP的子带标识以及子带预编码 信息可以与第一和第二 BP的子带标识以及子带预编码信息和 CQI在相同的 子帧进行发送,也可以在不同的子帧发送。 需要进一步说明的是, 宽带预编码信息可以与频率选择性预编码信息在 同一子帧也可以在不同的子帧上报。 宽带预编码信息可以与上述频率选择性 预编码信息联合编码, 也可以单独编码。
本发明实施例所述的发送和接收预编码信息的方法, 将系统带宽划分为 至少两个 BP, 选择 BP中的子带并获取该子带的预编码信息, 进一步提高了 子带的预编码性能, 选取的子带有更多的机会被调度给 UE, 从而提高了系统 的整体性能。。 与预编码信息同时发送 CQI信息, 可以提高频率调度增益, 同 时也便于准确选择调制编码方式。
实施例 8
参见图 8, 本发明实施例提供了一种发送和接收预编码信息的方法, 所述 系统带宽被划分为至少 2个带宽部分 BP, 其中每个 BP包含至少一个子带, 所述方法包括:
801 : 终端按照与数据发送端事先约定的第二规则在第一 BP和第二 BP 中分别选取一个子带并分别获取这两个子带的预编码信息。其中第一 BP和第 二 BP可以根据事先约定的第一规则得到,例如根据不同的上报子帧按照频率 增加的顺序依次扫描得到。
具体地, 对于其中的每个 BPj, 可以按照以下方法得到对应的子带以及预 编码信息:
具体地, 终端与数据发送端事先约定的第二规则可以是按照频率增加的 顺序依次扫描得到 BP内的子带,也可以是按照频率减小的顺序依次扫描得到 BP内的子带, 也可以是按照事先约定的函数得到对应的子带。
进一步地, 在得到选取的子带之后, 基于预设的准则 2计算该子带上的 预编码信息, 具体如式(2 )所示。
进一步地, 在得到第一、 第二 BP中的子带以及预编码信息之后, 还可以 包括: ,基于所述在所述第一 BP 中选取的子带的预编码信息计算该子带的信 道质量指示 CQI;基于所述在所述第二 BP中选取的子带的预编码信息计算该 子带的信道质量指示 CQI;
进一步地, 参见图 8, 确定第一 BP和第二 BP中的子带及其预编码信息 和 CQI之后, 还可以包括:
802: 终端将第一 BP和第二 BP中选择的子带的预编码信息和 CQI反馈 给数据发送端。
具体地, 终端将步骤 801中得到的第一和第二 BP的子带预编码信息(单 一码本)或者对应的频率选择性部分预编码信息 (双码本结构, 此时宽带预 编码信息可以通过单独反馈) 以及 CQI进行联合编码, 通过 PUCCH信道反 馈给数据发送端。 当然子带的预编码信息以及 CQI也可以通过 PUSCH信道 反馈给数据发送端。
803: 数据发送端接收第一 BP和第二 BP中选择的子带的预编码信息和
CQL
需要特别说明的是,上述第一和第二 BP中选择的子带预编码信息和 CQI 在相同的子帧发送。 其它 BP的子带预编码信息和 CQI可以与第一和第二 BP 需要进一步说明的是, 宽带预编码信息可以与频率选择性预编码信息在 同一子帧也可以在不同的子帧上报。 宽带预编码信息可以与上述频率选择性 预编码信息联合编码, 也可以单独编码。
本发明实施例所述的发送和接收预编码信息的方法, 将系统带宽划分为 至少 2个 BP, 选择 BP中的子带并获取该子带的预编码信息, 进一步提高了 子带的预编码性能。 选取的子带为数据发送端和终端事先约定, 因此不需要 发送该子带标识, 从而可以节省开销。 与预编码信息同时发送 CQI信息, 可 以提高频率调度增益, 同时也便于准确选择调制编码方式。
实施例 9
参见图 9, 本发明实施例提供了一种发送和接收预编码信息的方法, 所述 系统带宽被划分为至少 2个 BP, 所述方法包括:
901 : UE按照所述预设的准则在第一 BP和第二 BP中分别选取一个子带 并分别获取两个子带的预编码信息。 其中第一 BP和第二 BP可以按照事先约 定的规则得到, 如根据不同的上报子帧按照频率增加的顺序依次扫描得到。 具体地, 对于其中的每个 BPj, 可以按照以下方法得到对应的子带及其预编码 信息:
假定 BPj中含有 Nj个子带。终端基于预设的准则 1,计算得到子带标号。, 具体如式( 1 )所示。 进一步地, 在得到选取的子带之后, 基于预设的准则 2 计算该子带上的预编码信息, 具体如式(2 )所示。 或者, 基于预设的准则 3 计算子带标号。和预编码矩阵指示 , 具体如式(3 )所示。 需要进一步说明 的是, 还可以基于预设的准则 4计算宽带预编码信息 具体如式(4 )所 示。
进一步地, 选择第一、 第二 BP中的子带以及预编码信息之后, 还可以包 括: ,基于所述在所述第一和第二 BP 中选取的子带的预编码信息, 在选取的 所有子带上计算 CQI。 需要特别说明是, 实施例 7与本实施例不同的是, 实 施例 7在选择的每个子带上分别计算 CQI。
902: 终端将第一、 第二 BP中选择的子带标识以及子带的预编码信息和 所选择的所有子带的 CQI反馈给数据发送端。
需要说明的是,其中子带的预编码信息可以是子带的预编码矩阵指示 PMI (对于单一码本)或者预编码信息的频率选择性部分(如果预编码矩阵可以 为宽带预编码信息和频率选择性预编码信息两部分)。
具体地, 终端将步骤 901中得到的子带标号以及预编码信息(单一码本) 或者对应的频率选择性部分预编码信息 (双码本结构, 此时宽带预编码信息 可以通过单独反馈)和 CQI进行联合编码, 通过 PUCCH信道反馈给数据发 送端。当然该子带标识以及子带的预编码信息也可以通过 PUSCH信道反馈给 数据发送端。
903: 数据发送端接收第一、 第二 BP中的子带标识以及子带预编码信息 和所选择的所有子带的 CQI。
需要特别说明的是,上述第一和第二 BP的子带标识以及子带预编码信息 和 CQI在相同的子帧发送。 其它 BP的子带标识以及子带预编码信息可以与 第一和第二 BP的子带标识以及子带预编码信息和 CQI在相同的子帧进行发 送,也可以在不同的子帧发送。
需要进一步说明的是, 宽带预编码信息可以与频率选择性预编码信息在 同一子帧也可以在不同的子帧上报。 宽带预编码信息可以与上述频率选择性 预编码信息联合编码, 也可以单独编码。
本发明实施例所述的发送和接收预编码信息的方法, 将系统带宽划分为 至少两个 BP, 选择 BP中的子带并获取该子带的预编码信息, 进一步提高了 子带的预编码性能, 选取的子带有更多的机会被调度给 UE, 从而提高了系统 的整体性能。。 与预编码信息同时发送 CQI信息, 可以提高频率调度增益, 同 时也便于准确选择调制编码方式。
实施例 10
参见图 10, 本发明实施例提供了一种发送和接收预编码信息的方法, 所 述系统带宽被划分为至少 2个带宽部分 BP,其中每个 BP包含至少一个子带, 所述方法包括:
1001 : 终端按照与数据发送端事先约定的第二规则在第一 BP和第二 BP 中分别选取一个子带并分别获取这两个子带的预编码信息。 其中, 第一 BP根 据事先约定的第一规则, 如根据不同的上报子帧按照频率增加的顺序依次扫 描得到。
具体地, 对于其中的每个 BPj, 可以按照以下方法得到对应的子带以及预 编码信息:
具体地, 终端与数据发送端事先约定的第二规则可以是按照频率增加的 顺序依次扫描得到 BP内的子带,也可以是按照频率减小的顺序依次扫描得到 BP内的子带, 也可以是按照事先约定的函数得到对应的子带。
进一步地, 在得到选取的子带之后, 基于预设的准则 2计算该子带上的 预编码信息, 具体如式(2 )所示。 进一步地, 在得到第一、 第二 BP中的子带以及预编码信息之后, 还可以 包括: 基于所述在所述第一、 第二 BP中选取的子带的预编码信息, 在选取的 所有子带上计算 CQI; 需要特别说明是, 实施例 8与本实施例不同的是: 基 于选取的子带的预编码信息, 在选取的每个子带上分别计算 CQI。
进一步地, 参见图 10, 确定第一 BP和第二 BP中的子带及其预编码信息 和所选择的所有子带的 CQI之后, 还可以包括:
1002: 终端将第一 BP和第二 BP中选择的子带的预编码信息以及所选择 的所有子带的 CQI反馈给数据发送端。
具体地,终端将步骤 1001中得到的第一和第二 BP的子带预编码信息(单 一码本)或者对应的频率选择性部分预编码信息 (双码本结构, 此时宽带预 编码信息可以通过单独反馈) 以及 CQI进行联合编码, 通过 PUCCH信道反 馈给数据发送端。 当然子带的预编码信息以及 CQI也可以通过 PUSCH信道 反馈给数据发送端。
1003: 数据发送端接收第一 BP和第二 BP中的子带预编码信息和所选择 的所有子带的 CQI。
需要特别说明的是, 上述第一和第二 BP子带预编码信息和 CQI在相同 的子帧发送。其它 BP的子带预编码信息和 CQI可以与第一和第二 BP的子带 需要进一步说明的是, 宽带预编码信息可以与频率选择性预编码信息在 同一子帧也可以在不同的子帧上报。 宽带预编码信息可以与上述频率选择性 预编码信息联合编码, 也可以单独编码。
本发明实施例所述的发送和接收预编码信息的方法, 将系统带宽划分为 至少 2个 BP, 选择 BP中的子带并获取该子带的预编码信息, 进一步提高了 子带的预编码性能。 选取的子带为数据发送端和终端事先约定, 因此不需要 发送该子带标识, 从而可以节省开销。 与预编码信息同时发送 CQI信息, 可 以提高频率调度增益, 同时也便于准确选择调制编码方式。 实施例 11
考虑到预编码矩阵对宽带预编码信息的依赖性, 可以进一步对宽带预编码 信息在传输过程中进行保护, 以提高宽带预编码信息的可靠性。 本实施例提 供一种反馈宽带预编码信息的方法
参见图 11, 本发明实施例提供了一种发送和接收预编码信息的方法, 所 述方法包括:
1101 : 终端基于预设的准则计算该整个系统带宽上的预编码信息 (称之为 宽带预编码信息)。
具体地, 终端可以基于预设的准则 4计算宽带预编码信息, 如式(4 )所 示。
进一步地, 参见图 11, 确定宽带预编码信息之后, 还可以包括:
1102: 终端将宽带预编码信息反馈给数据发送端。
具体地,终端宽带预编码信息进行编码,通过 PUCCH信道反馈给数据发 送端。 当然宽带预编码信息也可以通过 PUSCH信道反馈给数据发送端。 需要 特别说明的是,该宽带预编码信息不与其它信息如 CQI或者 RI( Rank Indicator 秩指示 )信息进行联合编码。
1103: 数据发送端接收宽带预编码信息。
需要进一步说明的是, 宽带预编码信息可以与频率选择性预编码信息在 同一子帧也可以在不同的子帧上报。
本发明实施例所述的发送和接收预编码信息的方法, 将宽带预编码信息单 独发送和接收, 提高了宽带预编码信息的可靠性, 从而减少与子带预编码信 息联合使用时的误差传播。
实施例 12
需要说明的是, 本发明实施例与实施例 1-6的区别在于, 本实施例中, 子 带预编码信息和 CQI发送和接收, 可以由高层配置为预编码信息和 CQI二者 之一单独发送, 或者配置为同时发送和接收。 具体地, 当高层配置 CQI为单独发送时, 如果已有最新上报的子带预编 码信息, 则 CQI基于最新上报的子带预编码信息计算, 否则, 基于最新上报 的宽带预编码信息计算。
当高层配置预编码信息为单独发送时,可以按照实施例 1-4中任一实施例 执行, 当配置为预编码信息和 CQI同时发送时, 可以按照实施例 5-6中任一 实施例执行。
本发明实施例所述的发送和接收预编码信息和 CQI的方法, 可以提高系 统配置的灵活性。
实施例 13
参见图 12, 本发明实施例提供了一种发送和接收预编码信息的方法, 所 述系统带宽被划分为至少 1个带宽部分 BP, 本实施例中的子带为虚拟子带, 该虚拟子带与 BP大小相等,该虚拟子带与实际系统定义的子带大小可以相同 也可以不同。 所述方法包括:
1201 : 终端基于预设的准则获取第一子带即第一 BP的预编码信息。 其中 第一 BP可以按照事先约定的规则得到,如根据不同的上报子帧按照频率增加 的顺序依次扫描得到。
具体地, 在得到选取的第一子带之后, 基于预设的准则 5计算第一子带 的预编码信息, 具体如式(5 )所示
Figure imgf000023_0001
其中 ^表示预编码矩阵集合 W中的一个码字。 其中, BP— index为 BP的索^ , 此时, 第一子带标号等于 BP的索引 —, e 。 Jnckx, }^ )表示与预设的 准则 5对应的第一子带 Ρ_ϋχ和预编码矩阵 ^的目标函数,。 需要说明的是, 上述预设的准则 5可以是吞吐量最大化准则, 该准则对应的目标函数可以是 吞吐量最大化函数, 该吞吐量最大化函数可以是基于信息容量计算实现, 也 可以基于互信息或互信息的变形 (如互信息的加权)等实现。 需要进一步说明的是,( 5 )中的 ^可以从单一码本 C中选择, 此时, PMI= jQ 为对应的第一子带的预编码信息。 此外, (5 ) 中的 ^也可以是两个矩阵 ^和 的函数, 其中 ,表示宽带预编码矩阵, 来自于码本 CI; 表示频率选择 性预编码矩阵, 来自于码本 C2。 和 2分别用于从码本 C1和码本 C2索引得 到矩阵 .和矩阵 , 此时与 Q对应的宽带预编码矩阵指示和频率选择性预编 码矩阵指示分别为^和 2。 此时, 2为第一子带 _^ex对应的预编码信息。 需要进一步说明的是, 宽带预编码信息 ·。, ,可以通过式(4 )单独选择。 进一步地, 参见图 12, 确定第一子带的预编码信息之后, 还可以包括: 1202: 终端将第一子带的预编码信息反馈给数据发送端。
具体地, 终端将步骤 1201中得到的第一子带的预编码信息 (单一码本) 或者对应的频率选择性部分预编码信息 (双码本结构, 此时宽带预编码信息 可以通过单独反馈)进行编码, 通过 PUCCH信道反馈给数据发送端。 当然也 可以通过 PUSCH信道反馈给数据发送端。
1203: 数据发送端接收第一子带的预编码信息。
需要说明的是, 上述 BP可以含有一个实际系统定义的子带, 也可以含有 多个实际系统定义的子带。
需要进一步说明的是, 宽带预编码信息可以与第一子带预编码信息在同 一子帧也可以在不同的子帧上报。
本发明实施例所述的发送和接收预编码信息的方法, 将系统带宽划分为 至少 1个 BP, 获取并反馈子带的预编码信息, 进一步提高了系统的预编码性 h
匕。
实施例 14
参见图 13, 本发明实施例提供了一种发送和接收预编码信息的方法, 所 述系统带宽被划分为至少 1个带宽部分 BP, 本实施例中的子带为虚拟子带, 该虚拟子带与 BP大小相等,该虚拟子带与实际系统定义的子带大小可以相同 也可以不同。 所述方法包括:
1301 :终端基于预设的准则获取第一子带即第一 BP的预编码信息并基于 第一子带的预编码信息计算第一子带的 CQI。其中第一 BP可以按照事先约定 的准则得到, 如根据不同的上报子帧按照频率增加的顺序依次扫描得到。
具体地, 在得到第一子带之后, 基于预设的准则 5计算第一子带上的预 编码信息, 具体如式(5 )所示。 并基于第一子带的预编码信息计算第一子带 的 CQI, 即 CQI计算假定第一子带使用所述第一子带的预编码信息。
进一步地, 参见图 13, 确定第一子带的预编码信息和第一子带的 CQI之 后, 还可以包括:
1302: 终端将第一子带的预编码信息和第一子带的 CQI反馈给数据发送 端。
具体地, 终端将步骤 1301中得到的第一子带的预编码信息 (单一码本) 或者对应的频率选择性部分预编码信息 (双码本结构, 此时宽带预编码信息 可以通过单独反馈)和 CQI进行编码, 通过 PUCCH信道反馈给数据发送端。 当然也可以通过 PUSCH信道反馈给数据发送端。
1303: 数据发送端接收第一子带的预编码信息和第一子带的 CQI。
需要说明的是, 上述 BP可以含有一个实际系统定义的子带, 也可以含有 多个实际系统定义的子带。
需要进一步说明的是, 宽带预编码信息可以与第一子带预编码信息在同 一子帧也可以在不同的子帧上报。
本发明实施例所述的发送和接收预编码信息的方法, 将系统带宽划分为 至少 1个 BP, 获取并反馈子带的预编码信息和该子带的 CQI, 进一步提高了 系统的预编码性能, 便于实现频域调度和调制编码方式的选择。
实施例 15
参见图 14, 本发明实施例提供了一种发送和接收预编码信息的方法, 所 述系统带宽被划分为至少 1个带宽部分 BP, 本实施例中的子带为虚拟子带, 该虚拟子带与 BP大小相等,该虚拟子带与实际系统定义的子带大小可以相同 也可以不同。 所述方法包括:
1401 :终端基于预设的准则获取系统中各个子带即各个 BP的预编码信息 并基于各个子带的预编码信息, 在系统带宽上计算宽带 CQI。
具体地,基于预设的准则 5计算各个子带上的预编码信息, 具体如式(5 ) 所示。 进一步地, 基于各个子带的预编码信息, 计算宽带 CQI。 即该 CQI计 算假定各个子带分别使用所述各个子带的预编码信息。
进一步地, 参见图 14, 确定各个子带的预编码信息和宽带 CQI之后, 还 可以包括:
1402: 终端将各个子带的预编码信息和宽带 CQI反馈给数据发送端。 具体地, 终端将步骤 1401中得到的各个子带的预编码信息 (单一码本) 或者对应的频率选择性部分预编码信息 (双码本结构, 此时宽带预编码信息 可以通过单独反馈)和宽带 CQI进行编码, 通过 PUCCH信道反馈给数据发 送端。 当然也可以通过 PUSCH信道反馈给数据发送端。
1403: 数据发送端接收各个子带的预编码信息和宽带 CQI。
需要说明的是, 上述 BP可以含有一个实际系统定义的子带, 也可以含有 多个实际系统定义的子带。
需要进一步说明的是,宽带预编码信息可以与 BP预编码信息在同一子帧 也可以在不同的子帧上报。
本发明实施例所述的发送和接收预编码信息的方法, 将系统带宽划分为 至少 1个 BP, 获取并反馈子带的预编码信息和宽带 CQI, 进一步提高了系统 的预编码性能, 便于实现频域调度和调制编码方式的选择。
实施例 16
参见图 15, 本发明实施例提供了一种发送和接收预编码信息的方法, 所 述系统带宽被划分为至少 2个带宽部分 BP, 本实施例中的子带为虚拟子带, 该虚拟子带与 BP大小相等,该虚拟子带与实际系统定义的子带大小可以相同 也可以不同。 所述方法包括:
1501 :终端基于预设的准则获取第一子带即第一 BP、第二子带即第二 BP 的预编码信息。 其中第一、二 BP可以根据不同的上报子帧按照频率增加的顺 序依次扫描得到, 也可以按照其它事先约定的规则得到。
具体地, 在得到选取的第一、 第二子带之后, 基于预设的准则 5计算第一、 第二子带上的预编码信息, 具体如式(5 )所示。
进一步地, 参见图 15, 确定第一、 第二子带的预编码信息之后, 还可以 包括:
1502: 终端将第一、 第二子带的预编码信息反馈给数据发送端。
具体地, 终端将步骤 1501中得到的第一、 第二子带的预编码信息(单一 码本)或者对应的频率选择性部分预编码信息 (双码本结构, 此时宽带预编 码信息可以通过单独反馈)进行编码, 通过 PUCCH信道反馈给数据发送端。 当然也可以通过 PUSCH信道反馈给数据发送端。
1503: 数据发送端接收第一、 第二子带的预编码信息。
需要说明的是, 上述 BP可以含有一个实际系统定义的子带, 也可以含有 多个实际系统定义的子带。
需要进一步说明的是, 宽带预编码信息可以与子带预编码信息在同一子 帧也可以在不同的子帧上报。
本发明实施例所述的发送和接收预编码信息的方法, 将系统带宽划分为 至少 2个 BP, 获取并反馈 BP的预编码信息, 进一步提高了系统的预编码性 h
匕。
实施例 17
参见图 16, 本发明实施例提供了一种发送和接收预编码信息的方法, 所 述系统带宽被划分为至少 1个带宽部分 BP, 将所有 BP分为至少 1个组。 本 实施例中的子带为虚拟子带, 该虚拟子带与 BP大小相等, 该虚拟子带与实际 系统定义的子带大小可以相同也可以不同。 所述方法包括:
1601 : 终端基于预设的准则获取第一组子带中各个子带的预编码信息。 其中第一组子带中的各个子带分别等同于一个 BP, 而与所述第一组子带对应 的 BP可以根据按照频率增加的顺序依次扫描得到,也可以按照其它事先约定 的规则得到。 具体地, 基于预设的准则 5计算第一组子带中各个子带的预编 码信息, 具体如式(5 )所示。
进一步地, 参见图 16, 确定第一组子带各个子带的预编码信息之后, 还 可以包括:
1602: 终端将第一组子带各个子带的预编码信息反馈给数据发送端。 具体地,终端将步骤 1601中得到的第一组子带各个子带的预编码信息(单 一码本)或者对应的频率选择性部分预编码信息 (双码本结构, 此时宽带预 编码信息可以通过单独反馈)进行编码,通过 PUCCH信道反馈给数据发送端。 当然也可以通过 PUSCH信道反馈给数据发送端。
1603: 数据发送端接收第一组子带各个子带的预编码信息。
需要说明的是, 上述 BP可以含有一个实际系统定义的子带, 也可以含有 多个实际系统定义的子带。
需要进一步说明的是, 宽带预编码信息可以与上述第一组子带各个子带 预编码信息在同一子帧也可以在不同的子帧上报。
本发明实施例所述的发送和接收预编码信息的方法, 将系统带宽划分为 至少 1个 BP, 分组获取并反馈子带的预编码信息, 进一步提高了系统的预编 码性能。
实施例 18
参见图 17, 本发明实施例提供了一种发送和接收预编码信息的方法, 所 述系统带宽被划分为至少 2个带宽部分 BP, 将所有 BP分为至少 2个组。 本 实施例中的子带为虚拟子带, 该虚拟子带与 BP大小相等, 该虚拟子带与实际 系统定义的子带大小可以相同也可以不同。 所述方法包括: 1701 : 终端基于预设的准则获取第一、 第二组子带中各个子带的预编码 信息。 其中第一、 第二组子带中的各个子带分别等同于一个 BP, 而与所述第 一、 第二组子带对应的 BP可以根据按照频率增加的顺序依次扫描得到, 也可 以按照其它事先约定的规则得到。 具体地, 基于预设的准则 5计算第一、 第 二组子带中各个子带的预编码信息, 具体如式(5 )所示。
进一步地, 参见图 17, 确定第一、 第二组子带各个子带的预编码信息之 后, 还可以包括:
1702: 终端将第一、 第二组子带各个子带的预编码信息反馈给数据发送 端。
具体地, 终端将步骤 1701中得到的第一、 第二组子带各个子带的预编码 信息 (单一码本)或者对应的频率选择性部分预编码信息 (双码本结构, 此 时宽带预编码信息可以通过单独反馈 )进行编码,通过 PUCCH信道反馈给数 据发送端。 当然也可以通过 PUSCH信道反馈给数据发送端。
1703: 数据发送端接收第一、 第二组子带各个子带的预编码信息。
需要说明的是, 上述 BP可以含有一个实际系统定义的子带, 也可以含有 多个实际系统定义的子带。
需要进一步说明的是, 宽带预编码信息可以与上述第一、 第二组子带各 个子带预编码信息在同一子帧也可以在不同的子帧上报。
本发明实施例所述的发送和接收预编码信息的方法, 将系统带宽划分为 至少 2个 BP, 分组获取并反馈子带的预编码信息, 进一步提高了系统的预编 码性能。
实施例 19
参见图 18, 本发明实施例提供了一种发送和接收预编码信息的方法, 所 述系统带宽被划分为至少 1个带宽部分 BP, 将所有 BP分为至少 1个组。 本 实施例中的子带为虚拟子带, 该虚拟子带与 BP大小相等, 该虚拟子带与实际 系统定义的子带大小可以相同也可以不同。 所述方法包括: 1801 : 终端基于预设的准则获取第一组子带中各个子带的预编码信息。 其中第一组子带中的各个子带分别等同于一个 BP, 而与所述第一组子带对应 的 BP可以根据按照频率增加的顺序依次扫描得到,也可以按照其它事先约定 的规则得到。 具体地, 基于预设的准则 5计算第一组子带中各个子带的预编 码信息, 具体如式(5 )所示。
进一步地, 所述方法包括: 在第一组子带上计算 CQI。 该 CQI基于所述 第一组子带各自的预编码信息而计算, 称之为第一组子带的 CQI。
进一步地, 参见图 18, 确定第一组子带的 CQI和各个子带的预编码信息 之后, 还可以包括:
1802: 终端将第一组子带的 CQI和各个子带的预编码信息反馈给数据发 送端。
具体地,终端将步骤 1801中得到的第一组子带的 CQI和各个子带的预编 码信息 (单一码本)或者对应的频率选择性部分预编码信息 (双码本结构, 此时宽带预编码信息可以通过单独反馈 )进行编码,通过 PUCCH信道反馈给 数据发送端。 当然也可以通过 PUSCH信道反馈给数据发送端。
1803: 数据发送端接收第一组子带的 CQI和各个子带的预编码信息。 需要说明的是, 上述 BP可以含有一个实际系统定义的子带, 也可以含有 多个实际系统定义的子带。
需要进一步说明的是, 宽带预编码信息可以与上述第一组 BP的 CQI和 各个 BP预编码信息在同一子帧也可以在不同的子帧上报。
本发明实施例所述的发送和接收预编码信息的方法, 将系统带宽划分为 至少 1个 BP, 分组获取并反馈子带的预编码信息, 进一步提高了系统的预编 码性能。 进一步提供一组 BP的 CQI,便于实现频域调度和调制编码方式的选 择。 实施例 20 参见图 19, 本发明实施例提供了一种发送和接收预编码信息的方法, 所 述系统带宽被划分为至少 1个带宽部分 BP, 将所有 BP分为至少 1个组。 本 实施例中的子带为虚拟子带, 该虚拟子带与 BP大小相等, 该虚拟子带与实际 系统定义的子带大小可以相同也可以不同。 所述方法包括:
1901 : 终端采用实施例 17-18中任一实施例,通过相同的子帧或不同的子 帧发送系统中所有各组子带的预编码信息。
进一步地, 终端在发送完所述系统中所有各组子带的预编码信息之后, 所述方法还包括:
1902: 终端基于 1901中所述的各个子带的预编码信息计算宽带 CQI。 具 体地,该宽带 CQI基于假设所述各组子带分别使用各自的预编码信息而计算。
进一步地, 所述方法还可以包括:
1903 : 终端基于预设的准则获取宽带预编码信息。 具体地, 终端可以基 于预设的准则 4计算宽带预编码信息, 具体如式(4 )所示。
进一步地, 所述方法还可以包括:
1904: 终端将步骤 1902中的宽带 CQI和步骤 1903中的宽带预编码信息 反馈给数据发送端。
具体地, 终端将步骤 1902中得到的宽带 CQI和步骤 1903中的宽带预编 码信息进行编码, 通过 PUCCH信道反馈给数据发送端。 当然也可以通过 PUSCH信道反馈给数据发送端。
1905: 数据发送端接收终端在相同或不同的子帧发送系统中所有各组子 带的预编码信息。
需要说明的是, 步骤 1905所述的相同或不同的子帧发送的各组子带的预 信息一致。
1906: 数据发送端接收终端发送的宽带 CQI和宽带预编码信息。
需要说明的是,步骤 1906所述的宽带 CQI和宽带预编码信息分别与步骤 1902中的所述的宽带 CQI和步骤 1903所述的宽带预编码信息一致。
需要进一步说明的是, 步骤 1903中所述终端获取的宽带预编码信息只能 作为终端后续获取子带的预编码信息的宽带预编码信息部分使用。 而步骤 1901 中各组子带的预编码信息只能使用在获取各组子带的预编码信息时在终 端所能上报的最新的宽带预编码信息。
需要进一步说明的是, 宽带 CQI和宽带预编码信息可以与上述各组子带 的预编码信息在同一子帧也可以在不同的子帧上报。
需要说明的是, 上述 BP可以含有一个实际系统定义的子带, 也可以含有 多个实际系统定义的子带。
本发明实施例所述的发送和接收预编码信息的方法, 将系统带宽划分为 至少 1个 BP, 分组获取并反馈子带的预编码信息, 进一步提高了系统的预编 码性能。 基于所有各组子带预编码信息反馈宽带 CQI, 便于实现更精确的调 制编码方式的选择。 在提供宽带 CQI的同时提供宽带预编码信息, 为各组子 带提供了公共的宽带预编码信息。
实施例 21
参见图 20, 对应上述方法实施例, 本发明实施例提供了一种发送预编码 信息的装置, 适用于带宽被划分为至少 1个带宽部分 BP, 其中每个 BP包含 至少一个子带的系统, 所述装置包括:
子带选择单元 2001, 用于按照预设的准则或事先约定的规则在第一 BP 中选取一个子带;
信息获取单元 2002, 用于获取所述子带选择单元在所述第一 BP 中选取 的一个子带的预编码信息;
信息发送单元 2003, 用于发送所述信息获取单元获取的在所述第一 BP 中选取的一个子带的预编码信息。
为了适用于系统带宽被划分为至少 2个带宽部分 B P的场景:
所述子带选择单元 2001, 还用于按照预设准则或事先约定的规则在第二 BP中选取一个子带;
所述信息获取单元 2002, 还用于获取所述子带选择单元在所述第二 BP 中选取的一个子带的预编码信息;
所述信息发送单元 2003, 还用于发送所述信息获取单元获取的在所述第 二 BP中选取的一个子带的预编码信息。
进一步的, 所述信息发送单元 2003, 具体用于通过物理上行控制信道 PUCCH发送在所述第一 BP 中选取的一个子带的预编码信息; 并通过所述 PUCCH, 在所述第一 BP选择的子带的预编码信息所在相同子帧内或者不同 子帧内发送所述第二 BP中选取的一个子带的预编码信息。
进一步的, 所述子带选择单元 2001, 具体用于在第一 BP 中选取容量或 吞吐量最大的一个子带;或按照预先设定的上报顺序在第一 BP中选取一个子 带。
所述信息获取单元 2002, 还用于根据所述第一 BP 中选取的子带的预编 码信息获取所述第一 BP中选取的子带的 CQI;
所述信息发送单元 2003, 还用于通过所述 PUCCH, 在所述第一 BP选择 的子带的预编码信息所在相同子帧内发送所述第一 BP中选取的子带的 CQI。
进一步的, 所述信息发送单元 2003还用于将所述第一 BP中选取的子带 的 CQI与所述第一 BP中选取的子带的预编码信息进行联合编码, 获取联合 编码后的信息; 通过 PUCCH, 在相同子帧内发送所述联合编码后的信息; 或 将所述第一 BP中选取的子带的 CQI与所述第一 BP中选取的子带的预编码信 息, 以及所述第一 BP中选取的子带的标识信息进行联合编码, 获取联合编码 后的信息; 通过 PUCCH, 在相同子帧内发送所述联合编码后的信息。
其中, 实施例 21中的装置具体的可以为终端。
本发明实施例所述的发送预编码信息的装置, 将系统带宽划分为至少一 个 BP, 选择 BP中的子带并获取该子带的预编码信息, 进一步提高了子带的 预编码性能, 选取的子带有更多的机会被调度给 UE, 从而提高了系统的整体 性能。
实施例 22
参见图 21, 对应上述方法实施例, 本发明实施例提供了一种接收预编码 信息的装置, 适用于带宽被划分为至少 1个带宽部分 BP, 其中每个 BP包含 至少一个子带的系统, 所述装置包括:
信息接收单元 2100, 用于接收终端发送的在第一 BP中选取的一个子带 的预编码信息;
其中,所述在第一 BP中选取的子带为所述终端按照预设准则或事先约定 的规则选取的。
本发明实施例所述的接收预编码信息的装置, 将系统带宽划分为至少一 个 BP, 接收终端选择 BP中的子带并获取的该子带的预编码信息, 进一步提 高了子带的预编码性能, 选取的子带有更多的机会被调度给 UE, 从而提高了 系统的整体性能。
上述实施例中的数据发送端可以是 NodeB (节点 B )、 BS ( Base station, 基站),家庭基站,或中继站等,上述实施例中终端可以是 UE( User Equipment, 用户设备)、 MS ( Mobile Station, 移动台)。
本发明实施例所述的发送和接收预编码信息的装置, 将系统带宽划分为 至少两个 BP, 选择 BP中的子带并获取该子带的预编码信息, 进一步提高了 子带的预编码性能, 选取的子带有更多的机会被调度给 UE, 从而提高了系统 的整体性能。
以上实施例提供的技术方案中的全部或部分内容可以通过软件编程实 现, 其软件程序存储在可读取的存储介质中, 存储介质例如: 计算机中的硬 盘、 光盘或软盘。
以上所述仅为本发明的较佳实施例, 并不用以限制本发明, 凡在本发明 的精神和原则之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发 明的保护范围之内。

Claims

权利要求 书
1、 一种预编码信息的发送方法, 其特征在于, 系统带宽被划分为至少 1个 带宽部分 BP, 其中每个 BP包含至少一个子带, 所述方法包括:
按照预设准则或事先约定的规则在第一 BP中选取一个子带;
获取并发送在所述第一 BP中选取的一个子带的预编码信息。
2、 根据权利要求 1所述的方法, 其特征在于, 所述系统带宽被划分为至少 2个 BP, 所述方法还包括:
按照所述预设准则或所述事先约定的规则在第二 BP中选取一个子带; 获取并发送在所述第二 BP中选取的一个子带的预编码信息。
3、 根据权利要求 2所述的方法, 其特征在于,
所述发送在所述第一 BP中选取的一个子带的预编码信息, 具体为: 通过物 理上行控制信道 PUCCH发送在所述第一 BP中选取的一个子带的预编码信息; 所述发送所述第二 BP中选取的一个子带的预编码信息, 具体为: 通过所述 PUCCH, 在所述第一 BP选择的子带的预编码信息所在相同子帧 内或者不同子帧内发送所述第二 BP中选取的一个子带的预编码信息。
4、 根据权利要求 1-3中任一项所述的方法, 其特征在于, 所述按照预设准 则在第一 BP中选取一个子带包括:
在第一 BP中选取容量或吞吐量最大的一个子带;
所述按照事先约定的规则在第一 BP中选取一个子带包括:
按照预先设定的上报顺序在第一 BP中选取一个子带。
5、 根据权利要求 1-4中任一项所述的方法, 其特征在于, 所述发送在所述 第一 BP中选取的一个子带的预编码信息, 具体为: 通过所述 PUCCH发送所述 第一 BP中选取的子带的预编码信息;
所述方法还包括:
根据所述第一 BP中选取的子带的预编码信息获取所述第一 BP中选取的子 带的 CQI; 通过所述 PUCCH, 在所述第一 BP选择的子带的预编码信息所在相同子帧 内发送所述第一 BP中选取的子带的 CQI。
6、 根据权利要求 5所述的方法, 其特征在于, 所述通过 PUCCH发送所述 第一 BP中选取的一个子带的预编码信息, 及所述通过所述 PUCCH, 在所述第 一 BP选择的子带的预编码信息所在相同子帧内发送所述第一 BP中选取的子带 的 CQI, 包括:
将所述第一 BP中选取的子带的 CQI与所述第一 BP中选取的子带的预编码 信息进行联合编码, 获取联合编码后的信息;
通过 PUCCH, 在相同子帧内发送所述联合编码后的信息;
将所述第一 BP中选取的子带的 CQI与所述第一 BP中选取的子带的预编码 信息, 以及所述第一 BP中选取的子带的标识信息进行联合编码, 获取联合编码 后的信息;
通过 PUCCH, 在相同子帧内发送所述联合编码后的信息。
7、 一种预编码信息的接收方法, 其特征在于, 系统带宽被划分为至少 1个 带宽部分 BP, 其中每个 BP包含至少一个子带, 所述方法包括:
接收终端发送的在第一 BP中选取的一个子带的预编码信息;
其中,所述在第一 BP中选取的子带为所述终端按照预设准则或事先约定的 规则选取的。
8、 根据权利要求 7所述的方法, 其特征在于, 系统带宽被划分为至少 2个 带宽部分 BP, 所述方法还包括:
接收所述终端发送的在第二 BP中选取的一个子带的预编码信息; 其中,所述在第二 BP中选取的一个子带为所述终端按照所述预设准则或所 述事先约定的规则选取的。
9、 根据权利要求 8所述的方法, 其特征在于, 所述终端发送的在第一 BP 中选取的一个子带的预编码信息, 具体为: 接收所述终端通过物理上行控制信 道 PUCCH发送的在所述第一 BP中选取的一个子带的预编码信息;
所述接收所述终端发送的第二 BP 中选取的一个子带的预编码信息, 具体 为: 接收所述终端通过所述 PUCCH, 在所述第一 BP选择的子带的预编码信息 所在相同子帧内或者不同子帧内发送的所述第二 BP 中选取的一个子带的预编 码信息。
10、 一种预编码信息的发送装置, 其特征在于, 适用于系统带宽被划分为 至少 1个带宽部分 BP, 其中每个 BP包含至少一个子带的场景, 包括:
子带选择单元,用于按照预设准则或事先约定的规则在第一 BP中选取一个 子带;
信息获取单元,用于获取所述子带选择单元在所述第一 BP中选取的一个子 带的预编码信息;
信息发送单元,用于发送所述信息获取单元获取的在所述第一 BP中选取的 一个子带的预编码信息。
11、 根据权利要求 10所述的装置, 其特征在于, 适用于系统带宽被划分为 至少 2个带宽部分 BP的场景,
所述子带选择单元,还用于按照预设准则或事先约定的规则在第二 BP中选 取一个子带;
所述信息获取单元,还用于获取所述子带选择单元在所述第二 BP中选取的 一个子带的预编码信息;
所述信息发送单元,还用于发送所述信息获取单元获取的在所述第二 BP中 选取的一个子带的预编码信息。
12、 根据权利要求 11所述的装置, 其特征在于,
所述信息发送单元,具体用于通过物理上行控制信道 PUCCH发送在所述第 一 BP 中选取的一个子带的预编码信息; 并通过所述 PUCCH, 在所述第一 BP 选择的子带的预编码信息所在相同子帧内或者不同子帧内发送所述第二 BP 中 选取的一个子带的预编码信息。
13、根据权利要求 10-12中任一项所述的装置, 其特征在于, 所述子带选择 单元, 具体用于在第一 BP中选取容量或吞吐量最大的一个子带; 或按照预先设 定的上报顺序在第一 BP中选取一个子带。
14、根据权利要求 10-13中任一项所述的装置, 其特征在于, 所述信息获取 单元, 还用于根据所述第一 BP中选取的子带的预编码信息获取所述第一 BP中 选取的子带的 CQI;
所述信息发送单元, 还用于通过所述 PUCCH, 在所述第一 BP选择的子带 的预编码信息所在相同子帧内发送所述第一 BP中选取的子带的 CQI。
15、 根据权利要求 14所述的装置, 其特征在于, 所述信息发送单元还用于 将所述第一 BP中选取的子带的 CQI与所述第一 BP中选取的子带的预编码信息 进行联合编码, 获取联合编码后的信息; 通过 PUCCH, 在相同子帧内发送所述 联合编码后的信息;或将所述第一 BP中选取的子带的 CQI与所述第一 BP中选 取的子带的预编码信息,以及所述第一 BP中选取的子带的标识信息进行联合编 码, 获取联合编码后的信息; 通过 PUCCH, 在相同子帧内发送所述联合编码后 的信息。
16、 一种预编码信息的接收装置, 其特征在于, 适用于系统带宽被划分为 至少 1个带宽部分 BP, 其中每个 BP包含至少一个子带的场景, 包括:
信息接收单元,用于接收终端发送的在第一 BP中选取的一个子带的预编码 信息;
其中,所述在第一 BP中选取的子带为所述终端按照预设准则或事先约定的 规则选取的。
17、 根据权利要求 16所述的装置, 其特征在于, 适用于系统带宽被划分为 至少 2个带宽部分 BP的场景, 包括:
信息接收单元,还用于接收所述终端发送的在第二 BP中选取的子带的预编 码信息; 其中, 所述在第二 BP中选取的子带为所述终端按照预设准则选取的。
18、 根据权利要求 17所述的装置, 其特征在于, 所述信息接收单元, 还用 于接收所述终端通过所述 PUCCH, 在所述第一 BP选择的子带的预编码信息所 在相同子帧内或者不同子帧内发送的所述第二 BP 中选取的一个子带的预编码 信息。
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