WO2020134176A1 - 数据的预编码处理方法及装置、存储介质 - Google Patents

数据的预编码处理方法及装置、存储介质 Download PDF

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Publication number
WO2020134176A1
WO2020134176A1 PCT/CN2019/104528 CN2019104528W WO2020134176A1 WO 2020134176 A1 WO2020134176 A1 WO 2020134176A1 CN 2019104528 W CN2019104528 W CN 2019104528W WO 2020134176 A1 WO2020134176 A1 WO 2020134176A1
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Prior art keywords
precoding
codebook
control channel
physical resource
codebooks
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PCT/CN2019/104528
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English (en)
French (fr)
Inventor
边峦剑
戴博
刘锟
杨维维
方惠英
胡有军
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中兴通讯股份有限公司
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to EP19906130.0A priority Critical patent/EP3905734A4/en
Priority to US17/417,842 priority patent/US11641226B2/en
Priority to KR1020217023435A priority patent/KR102569080B1/ko
Priority to BR112021012532-9A priority patent/BR112021012532A2/pt
Priority to CA3125053A priority patent/CA3125053A1/en
Priority to SG11202106995YA priority patent/SG11202106995YA/en
Publication of WO2020134176A1 publication Critical patent/WO2020134176A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H04B7/0478—Special codebook structures directed to feedback optimisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0636—Feedback format
    • H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0023—Interference mitigation or co-ordination
    • H04J11/005—Interference mitigation or co-ordination of intercell interference
    • H04J11/0056—Inter-base station aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]

Definitions

  • the present disclosure relates to the field of communications, and in particular, to a method and device for precoding processing of data, and a storage medium.
  • MTC Machine Type Communication
  • MTC-Physical Downlink Control Channel uses precoding to send data.
  • DMRS demodulation reference signals
  • CRS Cell -specific Joint Reference
  • DMRS joint channel estimation requires that the receiving end knows the precoding matrix information used by the sending end. Therefore, how to pre-code the data of the control channel by the transmitting end so that the terminal knows the pre-coding information used for transmitting the data is a problem to be solved.
  • the encoding method used by the transmitting end to pre-encode the data of the control channel has not yet proposed an effective technical solution.
  • Embodiments of the present disclosure provide a data precoding processing method and device, and a storage medium, so as to at least solve the problem of which encoding method is adopted by a transmitting end to precode data of a control channel in a related art.
  • a data precoding processing method including: determining a precoding method according to a control channel type, the precoding method includes at least one of the following: predefined precoding, feedback precoding; Perform precoding processing on the data of the control channel according to the precoding method.
  • a data precoding processing apparatus including: a determination module configured to determine a precoding method according to a control channel type, the precoding method includes at least one of the following: pre-defined Precoding and feedback precoding; the processing module is set to perform precoding processing on the data of the control channel according to the precoding method.
  • a storage medium in which a computer program is stored, wherein the computer program is set to perform the pre-processing of the data described in any of the above at runtime Encoding processing method.
  • the present disclosure it is possible to determine the precoding method according to the type of control channel, and then perform precoding processing on the data of the control channel according to the precoding method.
  • the above technical solution is adopted to solve the related art, which coding method is used by the transmitting end to control the channel
  • the problem of precoding of the data, and then the precoding processing of the control channel data can be performed according to the precoding method determined by the control channel type.
  • FIG. 1 is a flowchart of a data precoding processing method according to an embodiment of the present disclosure
  • FIG. 2 is a structural block diagram of a data precoding processing device according to an embodiment of the present disclosure
  • FIG. 3 is a schematic diagram (1) of codebook numbers according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic diagram of a codebook number according to an embodiment of the present disclosure (2);
  • FIG. 5 is a schematic diagram (3) of a codebook number according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic diagram (four) of codebook numbering according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic diagram of an indication of precoding information according to an embodiment of the present disclosure.
  • the technical solution of the embodiment of the present disclosure is applied between the sending end and the receiving end (terminal). After the sending end determines the precoding method according to the type of the control channel, the precoding processing is performed on the data of the control channel according to the determined precoding method After receiving the processed data, the receiving end knows the type of the control channel, so that the terminal can know the precoding method used by the sending end.
  • FIG. 1 is a flowchart of a data precoding processing method according to an embodiment of the present disclosure, as shown in FIG. As shown in 1, the process includes the following steps:
  • Step S102 the sending end determines a precoding mode according to the control channel type, and the precoding mode includes at least one of the following: pre-defined precoding, feedback precoding;
  • Step S104 The sending end performs precoding processing on the data of the control channel according to the precoding method.
  • the precoding method can be determined according to the type of control channel, and then the data of the control channel can be precoded according to the precoding method.
  • the above technical solution is adopted to solve the related art.
  • the problem of precoding of the data, and then the precoding processing of the control channel data can be performed according to the precoding method determined by the control channel type.
  • determining the precoding mode according to the control channel type includes: determining the precoding mode at least according to the search space type of the control channel.
  • the search space type includes at least one of the following: type one common search space, type two common search space, and user-specific search space
  • the precoding method includes at least one of the following: first pre Define precoding, second predefined precoding, feedback precoding, wherein the control channel of the type one common search space uses the first predefined precoding; the control channel of the type two common search space uses the The first predefined precoding; the control channel of the user-specific search space adopts at least one of the following precoding methods: first predefined precoding, second predefined precoding, and feedback precoding.
  • the search space type further includes: a type three common search space, wherein the control channel of the type three common search space adopts at least one of the following precoding methods: a first pre-defined precoding, The second pre-defined precoding, feedback precoding.
  • the precoding method of pre-defined precoding includes: determining a set of precoding codebooks; based on the set of precoding codebooks, the control channel sequentially cycles through the set of precoding codebooks Codebook.
  • the control channel successively recycles the codebooks in the precoding codebook set, including: updating every X physical resource blocks on a subframe Use one precoding codebook; between subframes, every Y consecutive subframe updates use one precoding codebook, and the codebook used by the lowest physical resource block on subframe m+Y and the highest physical resource on subframe m
  • the codebook used by the block is a sequential relationship, where m is greater than or equal to 0, and X and Y are positive integers.
  • the first predefined precoding method includes: one physical resource block uses two precoding codebooks; the codebooks in the precoding codebook set are sequentially numbered from 0 to N- 1.
  • the numbers of the two precoding codebooks used by the physical resource block k on subframe j are: with Wherein, j and k are greater than or equal to 0, and P is the number of physical resource blocks occupied by the data transmission of the control channel or the number of physical resource blocks included in the physical resource block set of the physical downlink control channel MPDCCH of the machine type communication.
  • the second predefined precoding method includes: one physical resource block uses one precoding codebook; the codebooks in the precoding codebook set are sequentially numbered from 0 to N-1 , The number of the precoding codebook used by the upper physical resource block k of subframe j is Wherein, j and k are greater than or equal to 0, and P is the number of physical resource blocks occupied by the data transmission of the control channel or the number of physical resource blocks included in the physical resource block set of the physical downlink control channel MPDCCH of the machine type communication.
  • the control channel successively recycles the codebooks in the precoding codebook set, including: updating every X physical resource blocks on a subframe Use one precoding codebook; between subframes, every Y consecutive subframe updates use one precoding codebook, and the codebook used by the lowest PRB on subframe m+Y and the highest PRB used on subframe m
  • a codebook is the same, where m is greater than or equal to 0, and X and Y are positive integers.
  • the first predefined precoding method includes: one physical resource block uses two precoding codebooks; the codebooks in the precoding codebook set are sequentially numbered from 0 to N- 1.
  • the numbers of the two precoding codebooks used by the physical resource block k on subframe j are: with Wherein, j and k are greater than or equal to 0, and P is the number of physical resource blocks occupied by the data transmission of the control channel or the number of physical resource blocks included in the physical resource block set of the physical downlink control channel MPDCCH of the machine type communication.
  • the second predefined precoding method includes: one physical resource block uses one precoding codebook; the codebooks in the precoding codebook set are sequentially numbered from 0 to N-1 , The number of the precoding codebook used by the upper physical resource block k of subframe j is Wherein j and k are greater than or equal to 0, and P is the number of physical resource blocks occupied by the data transmission of the control channel or the number of physical resource blocks included in the physical resource block set of the physical downlink control channel MPDCCH of the machine type communication.
  • the set of precoding codebooks includes: repeated precoding codebooks.
  • the precoding codebook set includes: an odd number of precoding codebooks.
  • the second pre-defined precoding precoding method includes: on a subframe, for the demodulation reference signal, a precoding codebook is used every X physical resource block updates, and for data , Every L resource units are updated using a precoding codebook, where X and L are both positive integers.
  • the updating of the precoding codebook every L resource units includes: updating the precoding codebook once for each resource unit, or updating the precoding codebook once for each resource unit group, Or, each control channel unit is updated using a precoding codebook once.
  • the second pre-defined precoding precoding method includes: for the demodulation reference signal, updating the precoding codebook according to the physical resource block index and the subframe index; for data, according to the resource unit index Or the resource element group index or the control channel element index update uses the precoding codebook.
  • the demodulation reference signal of the control channel uses a fixed precoding codebook in the frequency domain.
  • the feedback precoding method includes: sending control signaling through a control channel, where the control signaling is used to indicate that the codebook used by the next control channel includes at least one of the following: the latest receiving end The codebook corresponding to the feedback precoding matrix indicator (Precoding Matrix Indicator, PMI), and the codebook corresponding to the second pre-defined precoding mode.
  • PMI Precoding Matrix Indicator
  • the latest PMI fed back by the receiving end is the latest PMI fed back by the receiving end available to the sending end.
  • precoding matrix indication confirmation signaling is used to indicate that the codebook used by the next control channel includes at least the following One: the latest precoding matrix fed back by the receiving end indicates the codebook corresponding to it, and the codebook corresponding to the second predefined precoding method.
  • the antenna port and the scrambling characteristic signaling are used to indicate that the codebook used by the next control channel includes at least one of the following: the latest The precoding matrix fed back by the receiving end indicates the corresponding codebook, and the codebook corresponding to the second pre-defined precoding.
  • the precoding method (equivalent to the precoding method mentioned in the above embodiment) is determined according to the type of control channel.
  • the precoding method includes: pre-defined precoding and feedback precoding.
  • the control channels of the common search space of type one and the common search space of type two use the first predefined precoding; the control channels of the user-specific search space use the second predefined precoding and/or feedback precoding; the common search of type three
  • the spatial control channel adopts the second predefined precoding and/or feedback precoding.
  • the above three precoding methods include: a first predefined precoding, a second predefined precoding, and a feedback precoding, where,
  • the predefined precoding includes: determining a set of precoding codebooks; based on the set of precoding codebooks, the control channel sequentially uses the codebooks in the set of precoding codebooks in turn.
  • control channel sequentially recycles the codebooks in the precoding codebook set, which includes the following two schemes (Scheme 1 and Scheme 2).
  • Solution 1 On one subframe, the precoding codebook is updated every X physical resource blocks; between subframes, the precoding codebook is updated every Y consecutive subframes, and the minimum PRB on subframe m+Y
  • the codebook used is in a sequential relationship with the codebook used by the largest PRB on subframe m.
  • one PRB uses two precoding codebooks.
  • scheme one if the codebooks in the precoding codebook set are sequentially numbered from 0 to N-1, the indexes of the two precoding matrices used by the kth physical resource block on the jth subframe are respectively And 2 ⁇ PX ⁇ jY+2 ⁇ kX+1mod N.
  • one PRB uses one precoding codebook; in scheme one, if the codebooks in the precoding codebook set are sequentially numbered from 0 to N-1, then subframe j is physically
  • the number of the precoding codebook used by resource block k is Where j and k are greater than or equal to 0, and P is the number of PRBs occupied by the control channel data transmission or the number of PRBs included in the MPDCCH physical resource block set.
  • Solution 2 On one subframe, the precoding codebook is updated every X physical resource blocks; between subframes, the precoding codebook is updated every Y consecutive subframes, and the lowest PRB on the subframe m+Y
  • the one codebook used is the same as the one used by the highest PRB on subframe m. Among them, m is greater than or equal to 0, X, Y is greater than or equal to 1.
  • one PRB uses two precoding codebooks.
  • scheme two if the codebooks in the precoding codebook set are sequentially numbered from 0 to N-1, the numbers of the two precoding codebooks used by the physical resource block k on subframe j are respectively And 2 ⁇ PX-1 ⁇ jY+2 ⁇ kX+1mod N. Where j and k are greater than or equal to 0, and P is the number of PRBs occupied by the control channel data transmission or the number of PRBs included in the MPDCCH physical resource block set.
  • one physical resource block uses one precoding codebook; in scheme two, if the codebooks in the precoding codebook set are sequentially numbered from 0 to N-1, subframe j
  • the number of the precoding codebook used by the physical resource block k is Where j and k are greater than or equal to 0, and P is the number of PRBs occupied by the control channel data transmission or the number of PRBs included in the MPDCCH physical resource block set.
  • the second predefined precoding also includes the following schemes: on a subframe, for the demodulation reference signal, the X physical resource block is used as the update granularity to update the precoding codebook; for data, the resource unit or resource unit group or control The channel unit updates the precoding codebook for the update granularity.
  • the demodulation reference signal updates the precoding codebook according to the physical resource block index and the subframe index; the data updates the precoding codebook according to the resource unit index or resource unit group index or control channel unit index.
  • the feedback precoding scheme is as follows: control signaling is sent through the control channel, and the control signaling indicates the precoding codebook of the next control channel.
  • the precoding codebook of the control channel includes at least the following One: the latest precoding matrix fed back by the receiving end indicates the corresponding codebook, and the second predefined precoding corresponds to the codebook.
  • control signaling indicates both the precoding codebook of the physical shared channel and the precoding codebook of the control channel.
  • control signaling indicates both the antenna port and the scrambling characteristic of the physical shared channel, and the precoding codebook of the control channel.
  • a data precoding processing device is also provided.
  • the device is used to implement the foregoing embodiments and optional implementation manners, and descriptions that have already been described will not be repeated.
  • the term "module” may implement a combination of software and/or hardware that performs predetermined functions.
  • the devices described in the following embodiments are preferably implemented in software, implementation of hardware or a combination of software and hardware is also possible and conceived.
  • FIG. 2 is a structural block diagram of a data precoding processing device according to an embodiment of the present disclosure. As shown in FIG. 2, the device includes:
  • the determining module 20 is configured to determine a precoding method according to the control channel type, and the precoding method includes at least one of the following: predefined precoding, feedback precoding;
  • the processing module 22 is configured to perform precoding processing on the data of the control channel according to the precoding method.
  • the present disclosure it is possible to determine the precoding method according to the type of control channel, and then perform precoding processing on the data of the control channel according to the precoding method.
  • the above technical solution is adopted to solve the related art, which coding method is used by the transmitting end to control the channel
  • the problem of precoding of the data, and then the precoding processing of the control channel data can be performed according to the precoding method determined by the control channel type.
  • the determination module 20 is configured to determine the precoding mode at least according to the search space type of the control channel.
  • the search space type includes at least one of the following: type one common search space, type two common search space, and user-specific search space
  • the precoding method includes at least one of the following: first pre Define precoding, second predefined precoding, feedback precoding, wherein the control channel of the type one common search space uses the first predefined precoding; the control channel of the type two common search space uses the The first predefined precoding; the control channel of the user-specific search space adopts at least one of the following precoding methods: first predefined precoding, second predefined precoding, and feedback precoding.
  • the search space type further includes: a type three common search space, wherein the control channel of the type three common search space adopts at least one of the following precoding methods: a first pre-defined precoding, The second pre-defined precoding, feedback precoding.
  • the precoding method of pre-defined precoding includes: determining a set of precoding codebooks; based on the set of precoding codebooks, the control channel sequentially cycles through the set of precoding codebooks Codebook.
  • the control channel successively recycles the codebooks in the precoding codebook set, including: updating every X physical resource blocks on a subframe Use one precoding codebook; between subframes, every Y consecutive subframe updates use one precoding codebook, and the codebook used by the lowest physical resource block on subframe m+Y and the highest physical resource on subframe m
  • the codebook used by the block is a sequential relationship, where m is greater than or equal to 0, and X and Y are positive integers.
  • the first predefined precoding method includes: one physical resource block uses two precoding codebooks; the codebooks in the precoding codebook set are sequentially numbered from 0 to N- 1.
  • the numbers of the two precoding codebooks used by the physical resource block k on subframe j are: with Wherein, j and k are greater than or equal to 0, and P is the number of physical resource blocks occupied by the data transmission of the control channel or the number of physical resource blocks included in the physical resource block set of the physical downlink control channel MPDCCH of the machine type communication.
  • the second predefined precoding method includes: one physical resource block uses one precoding codebook; the codebooks in the precoding codebook set are sequentially numbered from 0 to N-1 , The number of the precoding codebook used by the upper physical resource block k of subframe j is Wherein, j and k are greater than or equal to 0, and P is the number of physical resource blocks occupied by the data transmission of the control channel or the number of physical resource blocks included in the physical resource block set of the physical downlink control channel MPDCCH of the machine type communication.
  • the control channel successively recycles the codebooks in the precoding codebook set, including: updating every X physical resource blocks on a subframe Use one precoding codebook; between subframes, every Y consecutive subframe updates use one precoding codebook, and the codebook used by the lowest PRB on subframe m+Y and the highest PRB used on subframe m
  • a codebook is the same, where m is greater than or equal to 0, and X and Y are positive integers.
  • the first predefined precoding method includes: one physical resource block uses two precoding codebooks; the codebooks in the precoding codebook set are sequentially numbered from 0 to N- 1.
  • the numbers of the two precoding codebooks used by the physical resource block k on subframe j are: with Wherein, j and k are greater than or equal to 0, and P is the number of physical resource blocks occupied by the data transmission of the control channel or the number of physical resource blocks included in the physical resource block set of the physical downlink control channel MPDCCH of the machine type communication.
  • the second predefined precoding method includes: one physical resource block uses one precoding codebook; the codebooks in the precoding codebook set are sequentially numbered from 0 to N-1 , The number of the precoding codebook used by the upper physical resource block k of subframe j is Wherein j and k are greater than or equal to 0, and P is the number of physical resource blocks occupied by the data transmission of the control channel or the number of physical resource blocks included in the physical resource block set of the physical downlink control channel MPDCCH of the machine type communication.
  • the set of precoding codebooks includes: repeated precoding codebooks.
  • the precoding codebook set includes: an odd number of precoding codebooks.
  • the second pre-defined precoding precoding method includes: in a subframe, for the demodulation reference signal of the control channel, the precoding codebook is used once every X physical resource block updates For the data of the control channel, the precoding codebook is updated every L resource units, where X and L are both positive integers.
  • the updating of the precoding codebook every L resource units includes: the control channel data is updated using a precoding codebook once per resource unit, or each resource unit group is updated using a precoding codebook The coded codebook, or each control channel element update uses a precoded codebook once.
  • the second pre-defined precoding precoding method includes: for the demodulation reference signal of the control channel, updating the precoding codebook according to the physical resource block index and the subframe index; for the control channel The data is updated to use the precoding codebook according to the resource unit index or resource unit group index or control channel unit index.
  • the demodulation reference signal of the control channel uses a fixed precoding codebook in the frequency domain.
  • the feedback precoding method includes: sending control signaling through a control channel, where the control signaling is used to indicate that the codebook used by the next control channel includes at least one of the following: the latest feedback from the receiving end
  • the precoding matrix of indicates the corresponding codebook, and the codebook corresponding to the second predefined precoding method is used.
  • precoding matrix indication confirmation signaling is used to indicate that the codebook used by the next control channel includes at least the following One: the codebook corresponding to the latest precoding matrix indication received by the receiving end uses the codebook corresponding to the second predefined precoding method.
  • the codebook used by the antenna port and the scrambling characteristic signaling to indicate the next control channel includes at least one of the following:
  • the latest feedback precoding matrix indicates the corresponding codebook, and the codebook corresponding to the second predefined precoding is used.
  • Optional embodiment 1 of the present disclosure provides a control channel precoding method.
  • the method includes:
  • the precoding method is determined according to the type of control channel, and the precoding method includes predefined precoding and feedback precoding; and the control channel data is precoded according to the precoding method.
  • the precoding method is determined at least according to the search space type of the control channel.
  • the control channels of Common Search Space (CSS) and Type 2 common search spaces use the first predefined precoding; the control channels of UE-specific Search Space (USS) use the control channels.
  • the second predefined precoding and/or feedback precoding are used.
  • the type one common search space represents the type 1 common search space (type-1CSS) of the MPDCCH
  • the type two common search space represents the type 2 common search space (type-2CSS) of the MPDCCH.
  • control channel of the type three common search space uses the second predefined precoding and/or feedback precoding, where the type three common search space represents the type 0 common search space of the MPDCCH (type- 0CSS).
  • the predefined precoding includes: determining a set of precoding codebooks; based on the set of precoding codebooks, the control channel sequentially recycles the codebooks in the set of precoding codebooks.
  • the receiving end knows the update rule of the predefined precoding codebook, and can determine the precoding codebook used by the control channel.
  • a precoding codebook is a precoding matrix.
  • the predefined precoding includes: based on the set of precoding codebooks, in the frequency domain, the precoding codebook is updated every X physical resource blocks, and the precoding used in the X consecutive PRBs The coding matrix remains unchanged; in the time domain, the precoding codebook is updated every Y consecutive subframes (Subframe). For any PRB, within the Y consecutive subframes, the precoding matrix used by the PRB does not change.
  • the codebook used by the lowest PRB on subframe m+Y and the codebook used by the highest PRB on subframe m are in a sequential relationship.
  • the lowest PRB refers to the PRB with the lowest index or the PRB with the lowest frequency
  • the highest PRB refers to the PRB with the highest index or the PRB with the highest frequency.
  • m is greater than or equal to
  • X is greater than or equal to 1.
  • the codebooks in the precoding codebook set are sequentially numbered from 0 to N-1, and if the index of the last updated precoding matrix of the m-th subframe is n, 0 ⁇ n ⁇ N-1 , Then the m+Yth subframe starts at index (n+1) mod N and continues to cycle through the codebooks in the set.
  • the precoding codebook set contains 5 codebooks, sequentially numbered 0 to 4, and each subframe traverses 4 codebooks
  • the codebook number used sequentially by the mth subframe in the frequency domain is ⁇ 0, 1,2,3 ⁇
  • the codebook numbers used for the m+Y subframe, m+2Y subframe, m+3Y subframe, and m+4Y subframe are ⁇ 4,0,1,2 ⁇ , ⁇ 3,4,0,1 ⁇ , ⁇ 2,3,4,0 ⁇ , ⁇ 1,2,3,4 ⁇ , and so on.
  • the set of precoding codebooks may contain repeated codebooks.
  • the precoding codebook set may include an odd number of codebooks, so as to ensure that one PRB traverses all codebooks when the time domain is updated.
  • the pre-defined precoding further includes: based on the set of precoding codebooks, in the frequency domain, the precoding codebook is updated every X physical resource blocks and used in the X consecutive PRBs The precoding matrix remains unchanged; in the time domain, the precoding codebook is updated every Y consecutive subframes (Subframe). For any PRB, within the Y consecutive subframes, the precoding matrix used by the PRB constant.
  • one codebook used by the lowest PRB on subframe m+Y is the same as one codebook used by the highest PRB on subframe m.
  • the lowest PRB refers to the PRB with the lowest index or the PRB with the lowest frequency
  • the highest PRB refers to the PRB with the highest index or the PRB with the highest frequency.
  • m is greater than or equal to 0
  • X Y is greater than or equal to 1.
  • the codebooks in the precoding codebook set are sequentially numbered from 0 to N-1, and if the number of the last updated precoding matrix of the m-th subframe is n, 0 ⁇ n ⁇ N-1 , Then the m+Yth subframe starts at number n and continues to cycle through the codebooks in the set.
  • the precoding codebook set contains 5 codebooks, sequentially numbered 0 to 4, and each subframe traverses 4 codebooks
  • the codebook number used sequentially by the mth subframe in the frequency domain is ⁇ 0, 1,2,3 ⁇
  • the codebook numbers used for the m+Y subframe, m+2Y subframe, m+3Y subframe, and m+4Y subframe are ⁇ 3,4,0,1 ⁇ , ⁇ 1,2,3,4 ⁇ , ⁇ 4,0,1,2 ⁇ , ⁇ 2,3,4,0 ⁇ , and so on.
  • the time domain update of the precoding codebook is updated based on the absolute subframe index (Absolute Subframe Index).
  • the precoding codebook is updated every Y consecutive subframes (Subframe), where Y is equal to the frequency hopping interval configuration parameter.
  • the second predefined precoding further includes: on a subframe, for the demodulation reference signal, the precoding codebook is updated every X PRBs, and for the data, every L resource units ( Resource (Element, RE) updates the precoding codebook once. That is to say, the codebook is updated every DMRS on X PRBs, and the codebook is updated every data on L REs.
  • X and L are integers greater than or equal to 1.
  • the second predefined precoding uses only one precoding codebook on each PRB, so the number of codebooks that can be traversed on a subframe is small, so the data is updated every L REs
  • a precoding matrix makes the update granularity smaller than PRB, and thus can traverse more codebooks and obtain better diversity gain.
  • the DMRS uses PRB as the update granularity to enable the receiver to use DMRS for channel estimation. It should be noted that the applicable scope of this precoding method is not limited to the above search space and control channel, it can also be used as an independent precoding method for other physical channels.
  • the updating of the precoding codebook every L REs includes: updating the precoding codebook once for each RE, or updating the precoding codebook once for each Resource Element Group (REG), or Each control channel element (Control Channel Element, CCE) updates the precoding codebook once.
  • the resource unit group also includes an enhanced resource element group (Enhanced Resource Element Group, EREG), and the control channel unit also includes an enhanced control channel unit (Enhanced Control Channel Element, ECCE).
  • the DMRS of the control channel updates the precoding codebook according to the PRB index (PRB Index) and subframe index (Subframe Index); the data of the control channel updates the precoding codebook according to the RE index or resource unit group index or control channel unit index .
  • the index may also be called a serial number or number.
  • the receiving end knows the update rule of the precoding codebook, so it can determine the precoding matrix used by the MPDCCH.
  • the DMRS of the control channel uses a fixed precoding codebook in the frequency domain, that is, the DMRS does not update the precoding code in the frequency domain In this case, all PRB DMRSs use the same precoding codebook.
  • the feedback precoding includes: sending control signaling through a control channel, the control signaling indicating precoding codebook information of the next control channel.
  • the receiving end receives the control signaling, and uses the information of the precoding codebook indicated by the signaling to demodulate the data of the next control channel.
  • one control channel includes one or more control channel subframes, and the number of control channel subframes included in one control channel is equal to the number of repetitions of the control channel.
  • the precoding codebook information of the control channel includes: the control channel using the codebook corresponding to the latest PMI fed back by the receiving end or using the codebook corresponding to the second predefined precoding. Therefore, the control signaling instructs the next control channel to use the codebook corresponding to the latest PMI fed back by the receiving end or use the codebook corresponding to the second predefined precoding.
  • the latest PMI fed back by the receiving end is the latest PMI available at the sending end.
  • control signaling is the existing indication signaling in the control channel, and no additional signaling overhead is added.
  • control signaling is a precoding matrix indication confirmation (PMI confirmation for precoding), while the signaling indicates the precoding matrix of the PDSCH to indicate confirmation information, it also indicates the precoding codebook information of the control channel.
  • PMI confirmation for precoding
  • the control signaling is the antenna port and scrambling characteristics (Antenna port(s) and scrambling identity), and the control signaling indicates the antenna port and scrambling of the PDSCH At the same time as the characteristic, it also indicates the precoding codebook information of the control channel.
  • Optional embodiment 2 of the present disclosure is a specific embodiment of pre-defined precoding applied to MPDCCH.
  • the method includes:
  • Step 1 Determine the precoding codebook set of the MPDCCH.
  • the precoding codebook set includes N codebooks, which are sequentially numbered from 0 to N-1.
  • the set of precoding codebooks may contain repeated codebooks, and optionally, N may be an odd number.
  • the sending end may configure different numbers of codebooks N for the precoding codebook set according to different numbers of transmit antennas.
  • N can be defined as a known default value at the sending end and the receiving end, and each number of transmitting antennas corresponds to an N value.
  • the sending end may configure 4 available precoding codebooks or odd numbering codebooks greater than 4 for the precoding codebook set; 4 transmitting antennas, there are 16 single-layer precoding codebooks in total, so the sending end can configure 16 available precoding codebooks or odd number codebooks greater than 16 for the precoding codebook set.
  • the arrangement order of the codebooks in the set can ensure that the vector direction of the codebook used in each MPDCCH subframe traverses as large an angle as possible.
  • the order of the codebooks in the set can be set to the known default configuration of the sending end and the receiving end, for example, for different numbers of transmit antennas, the corresponding default codebook usage order is set; optionally, a predefined codebook The order of use can also be notified by higher layer signaling.
  • Step 2 Based on the set of precoding codebooks, in the frequency domain, the precoding codebook is updated every X physical resource blocks; in the time domain, the precoding codebook is updated every Y consecutive subframes.
  • the precoding codebook set contains 4 codebooks, sequentially numbered from 0 to 3, then the order of codebook recycling is ⁇ 0,1,2,3,0,1,2, 3,0,1,2,3,0,1,2,3,... ⁇ ; for 4 transmit antennas, the precoding codebook set contains 16 codebooks, numbered sequentially from 0 to 15, the codebook loops The order used is ⁇ 0,1,2,3,...,14,15,0,1,2,3,...,14,15,0,1,2,3,...,14 ,15,... ⁇ .
  • the MPDCCH-PRB-set monitored by the receiving end is 6 PRBs
  • the precoding codebook is updated every 2 PRBs in the frequency domain
  • the codebook is updated every Y consecutive subframes in the time domain.
  • the two precoding codebook numbers used by the physical resource block k on subframe j are respectively And 2 ⁇ 3 ⁇ jY+2 ⁇ k2+1mod 4.
  • the two precoding codebook numbers used by physical resource block k on subframe j are: with
  • the number of the precoding codebook used by each PRB in the 4-transmit antenna configuration is shown in FIG. 3.
  • the precoding codebook number used by the physical resource block k on subframe j is optionally, the precoding codebook number used by each PRB under the 2 transmit antenna configuration is shown in FIG. 4; for the 4 transmit antenna, the precoding codebook number used by the physical resource block k on subframe j is
  • the precoding codebook set contains 5 codebooks, which are sequentially numbered 0 to 4, and the order of codebook recycling is ⁇ 0,1,2, 3,4,0,1,2,3,4,0,1,2,3,4,0,1,2,3,4,... ⁇ ; for 4 transmit antennas, the precoding codebook set contains 17 codebooks, sequentially numbered from 0 to 16, the order of codebook circulation is ⁇ 0,1,2,3,...,14,15,16,0,1,2,3,... ,14,15,16,0,1,2,3,...,14,15,16,... ⁇ .
  • the precoding codebook is updated once for each PRB in the frequency domain, and once every Y consecutive subframes in the time domain.
  • the two precoding codebook numbers used by the physical resource block k on subframe j are respectively And 2 ⁇ 4 ⁇ jY+2 ⁇ k+1mod 5, optionally, the precoding codebook number used by each PRB in the 2 transmit antenna configuration is shown in Figure 5; for the 4 transmit antenna, the physical on subframe j
  • the two precoding codebook numbers used by resource block k are: with
  • the precoding codebook number used by the physical resource block k on subframe j is For a 4-transmit antenna, the precoding codebook number used by physical resource block k on subframe j is Optionally, the number of the precoding codebook used by each PRB in the 4-transmit antenna configuration is shown in FIG. 6.
  • the time-frequency domain update granularity of the precoding codebook can be set as the default configuration, for example, for different MPDCCH-PRB-set configurations, the corresponding default frequency domain update granularity is set; optionally, The time-frequency domain update granularity of the precoding codebook can also be notified by higher layer signaling.
  • Optional embodiment 3 of the present disclosure provides a precoding matrix indication method, which is applied to a physical control channel of a user-specific search space.
  • the method includes:
  • Control signaling is sent through the control channel, and the control signaling instructs the next control channel to use the codebook corresponding to the latest PMI fed back by the receiving end or use the codebook corresponding to the second predefined precoding.
  • the receiving end After receiving the control signaling, the receiving end can determine the precoding matrix used by the MPDCCH.
  • the signaling sent by the Kth control channel indicates information of the precoding matrix used by the K+1th control channel, K is greater than or equal to 1.
  • the receiving end uses the precoding matrix information indicated by the signaling to demodulate the data of the K+1th control channel time-frequency resource. Thereby, the receiving end can realize joint CRS and DMRS channel estimation for the control channel.
  • one control channel includes one or more control channel subframes, and the number of control channel subframes included in one control channel is equal to the number of repetitions of the control channel.
  • control signaling is the existing indication signaling in the control channel, and no additional signaling overhead is added.
  • control channel when the control channel is used to schedule the PDSCH of TM4 or TM6, the existing control signaling "precoding matrix indication confirmation (PMI confirmation for precoding)" is used to indicate the control channel Precoded codebook information.
  • the control signaling indicates both the information indicating the confirmation of the PDSCH precoding matrix and the precoding codebook information of the control channel.
  • the precoding matrix indicates that the confirmation signaling is 1-bit information.
  • the PDSCH uses the latest codebook corresponding to the PMI fed back by the receiving end, and the control channel also uses the latest The codebook corresponding to the PMI fed back by the receiving end; when the value of the control signaling is 0, the control channel uses the codebook corresponding to the second predefined precoding.
  • control channel when the control channel is used for scheduling the PDSCH of TM9, the existing control signaling "Antenna port and scrambling characteristics (Antenna port (s) and scrambling identity)" is used to indicate the Control channel precoding codebook information.
  • the control signaling not only indicates the antenna port and the scrambling characteristic of the PDSCH, but also indicates the precoding codebook information of the control channel.
  • the antenna port and the scrambling characteristic signaling are 2-bit information.
  • the signaling may be used to indicate the precoding codebook information of the control channel in one of the following two ways:
  • Manner 1 The switching of the two antenna ports is used to indicate whether the control channel uses the codebook corresponding to the latest PMI fed back by the receiving end or the codebook corresponding to the second predefined precoding.
  • the antenna port 7 instructs the control channel to use the latest codebook corresponding to the PMI fed back by the receiving end, or the antenna port 8 instructs the control channel to use the codebook corresponding to the latest PMI fed back by the receiving end, another antenna The port instructs the control channel to use the codebook corresponding to the second predefined precoding.
  • nSCID The values of the two scrambling characteristics nSCID are used to indicate whether the control channel uses the codebook corresponding to the latest PMI fed back by the receiving end or the codebook corresponding to the second predefined precoding.
  • the latest PMI fed back by the receiving end is the latest PMI available at the sending end.
  • Alternative embodiment 4 of the present disclosure may be understood as a specific embodiment of alternative embodiment 3, which is applied to Localized MPDCCH.
  • the method includes:
  • control signaling is sent through the MPDCCH, and the control signaling instructs the next MPDCCH to use the codebook corresponding to the latest PMI fed back by the receiving end or the codebook corresponding to the second predefined precoding.
  • control signaling sent by the Kth MPDCCH indicates whether the K+1th MPDCCH uses the codebook corresponding to the latest PMI fed back by the receiving end or corresponds to the second predefined precoding Codebook.
  • one MPDCCH is R subframes in the time domain, R is equal to the number of MPDCCH repetitions, and is all MPDCCH-PRB-sets monitored by the receiving end in the frequency domain.
  • Step 202 After receiving the control signaling sent by the Kth MPDCCH, the receiving end determines the precoding codebook used by the K+1th MPDCCH and demodulates the K+1th MPDCCH data.
  • the control signaling is a precoding matrix indication confirmation signaling.
  • the receiving end receives the control signaling sent by the Kth MPDCCH. If the control signaling is equal to 0, the K+1th MPDCCH uses the codebook corresponding to the second predefined precoding, and the second precoding Precoding is defined as the default configuration of the sending end and the receiving end.
  • the receiving end knows the usage rule of the second predefined precoding, so it can determine the precoding matrix used by the K+1th MPDCCH, and use CRS and DMRS joint channel estimation; if If the control signaling is equal to 1, the K+1th MPDCCH uses the precoding codebook corresponding to the latest PMI fed back by the receiving end. This information is saved when the receiving end reports the PMI, so the K+1th MPDCCH can be determined Use the precoding matrix to demodulate the K+1th MPDCCH data.
  • the control signaling is antenna port and scrambling characteristic signaling.
  • the control signaling is 2-bit information, and the value of two scrambling characteristics nSCID is used to indicate whether the control channel uses the codebook corresponding to the latest PMI fed back by the receiving end or the codebook corresponding to the second predefined precoding.
  • the receiving end can determine the precoding matrix used for the K+1th MPDCCH, and use CRS and DMRS joint channel estimation.
  • the receiving end defaults that the first MPDCCH uses the first predefined precoding or the second predefined precoding, thereby demodulating the first MPDCCH data.
  • An embodiment of the present disclosure also provides a storage medium, which includes a stored program, wherein the method described in any one of the above is executed when the above program runs.
  • the above storage medium may be set to store program code for performing the following steps:
  • the sending end determines a precoding method according to the control channel type, and the precoding method includes at least one of the following: predefined precoding, feedback precoding;
  • the sending end performs precoding processing on the data of the control channel according to the precoding method.
  • the above storage medium may include, but is not limited to: a USB flash drive, a read-only memory (Read-Only Memory, ROM for short), a random access memory (Random Access Memory, RAM for short), Various media that can store program codes, such as removable hard disks, magnetic disks, or optical disks.
  • modules or steps of the present disclosure can be implemented by a general-purpose computing device, they can be concentrated on a single computing device, or distributed in a network composed of multiple computing devices Above, optionally, they can be implemented with program code executable by the computing device, so that they can be stored in the storage device to be executed by the computing device, and in some cases, can be in a different order than here
  • the steps shown or described are performed, or they are made into individual integrated circuit modules respectively, or multiple modules or steps among them are made into a single integrated circuit module for implementation. In this way, the present disclosure is not limited to any specific combination of hardware and software.

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Abstract

本公开提供了一种数据的预编码处理方法及装置、存储介质，其中，上述方法包括：根据控制信道类型确定预编码方式，所述预编码方式至少包括以下之一：预定义预编码，反馈预编码；根据所述预编码方式对控制信道的数据进行预编码处理。采用上述技术方案，解决了相关技术中发送端采用何种编码方式对控制信道的数据进行预编码的问题。

Description

数据的预编码处理方法及装置、存储介质 技术领域
本公开涉及通信领域，具体而言，涉及一种数据的预编码处理方法及装置、存储介质。
背景技术
在机器类型通信(Machine Type Communication，MTC)中，MTC物理下行控制信道(MTC-Physical Downlink control channel，MPDCCH)采用预编码的方式发送数据。在Release-15版本的MPDCCH中，接收端采用基于解调参考信号(Demodulation Reference Signal，DMRS)的信道估计；在Release-16版本中，为增强MPDCCH性能，接收端可采用小区专用参考信号(Cell-specific Reference Signal，CRS)和DMRS联合信道估计。但是，采用CRS和DMRS联合信道估计，需要接收端已知发送端使用的预编码矩阵信息。因此，发送端如何对控制信道的数据进行预编码，才能使得终端知晓发送数据所使用的预编码信息，是一个需要解决的问题。
针对相关技术中，发送端采用何种编码方式对控制信道的数据进行预编码的问题，尚未提出有效的技术方案。
发明内容
本公开实施例提供了一种数据的预编码处理方法及装置、存储介质，以至少解决相关技术中发送端采用何种编码方式对控制信道的数据进行预编码的问题。
根据本公开的一个实施例，提供了一种数据的预编码处理方法，包括：根据控制信道类型确定预编码方式，所述预编码方式至少包括以下之一：预定义预编码，反馈预编码；根据所述预编码方式对控制信道的数据进行预编码处理。
根据本公开的另一个实施例，还提供了一种数据的预编码处理装置， 包括：确定模块，设置为根据控制信道类型确定预编码方式，所述预编码方式至少包括以下之一：预定义预编码，反馈预编码；处理模块，设置为根据所述预编码方式对控制信道的数据进行预编码处理。
根据本公开的另一个实施例，还提供了一种存储介质，所述存储介质中存储有计算机程序，其中，所述计算机程序被设置为运行时执行以上任一项中所述的数据的预编码处理方法。
通过本公开，能够根据控制信道类型确定预编码方式，进而根据预编码方式对控制信道的数据进行预编码处理，采用上述技术方案，解决了相关技术中，发送端采用何种编码方式对控制信道的数据进行预编码的问题，进而能够根据控制信道类型确定的预编码方式对控制信道的数据进行预编码处理。
附图说明
此处所说明的附图用来提供对本公开的进一步理解，构成本申请的一部分，本公开的示意性实施例及其说明用于解释本公开，并不构成对本公开的不当限定。在附图中：
图1是根据本公开实施例的数据的预编码处理方法的流程图；
图2是根据本公开实施例的数据的预编码处理装置的结构框图；
图3是根据本公开实施例的码本编号的示意图(一)；
图4是根据本公开实施例的码本编号的示意图(二)；
图5是根据本公开实施例的码本编号的示意图(三)；
图6是根据本公开实施例的码本编号的示意图(四)；
图7是根据本公开实施例的预编码信息的指示示意图。
具体实施方式
下文中将参考附图并结合实施例来详细说明本公开。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
需要说明的是，本公开的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
本公开实施例的技术方案应用于发送端与接收端(终端)之间，发送端根据控制信道的类型确定出预编码方式后，进而根据确定的预编码方式对控制信道的数据进行预编码处理，接收端接收到处理后的数据后，由于接收端已知晓控制信道的类型，进而终端就能够知晓发送端所采用的预编码方式。
在本实施例中提供了一种数据的预编码处理方法，也可以理解成是控制信道的预编码处理方法，图1是根据本公开实施例的数据的预编码处理方法的流程图，如图1所示，该流程包括如下步骤：
步骤S102，发送端根据控制信道类型确定预编码方式，所述预编码方式至少包括以下之一：预定义预编码，反馈预编码；
步骤S104，发送端根据所述预编码方式对控制信道的数据进行预编码处理。
通过上述步骤，能够根据控制信道类型确定预编码方式，进而根据预编码方式对控制信道的数据进行预编码处理，采用上述技术方案，解决了相关技术中，发送端采用何种编码方式对控制信道的数据进行预编码的问题，进而能够根据控制信道类型确定的预编码方式对控制信道的数据进行预编码处理。
在本公开一实施例中，根据控制信道类型确定预编码方式，包括：至少根据控制信道的搜索空间类型确定预编码方式。
在本公开一实施例中，所述搜索空间类型至少包括以下之一：类型一公共搜索空间，类型二公共搜索空间，用户专用搜索空间，所述预编码方式至少包括以下之一：第一预定义预编码，第二预定义预编码，反馈预编码，其中，所述类型一公共搜索空间的控制信道采用所述第一预定义预编码；所述类型二公共搜索空间的控制信道采用所述第一预定义预编码；所 述用户专用搜索空间的控制信道至少采用以下之一预编码方式：第一预定义预编码，第二预定义预编码，反馈预编码。
在本公开一实施例中，所述搜索空间类型还包括：类型三公共搜索空间，其中，所述类型三公共搜索空间的控制信道至少采用以下之一预编码方式：第一预定义预编码，第二预定义预编码，反馈预编码。
在本公开一实施例中，所述预定义预编码的预编码方式包括：确定一个预编码码本集合；基于所述预编码码本集合，控制信道依次循环使用所述预编码码本集合中的码本。
在本公开一实施例中，所述基于所述预编码码本集合，控制信道依次循环使用所述预编码码本集合中码本，包括：在一个子帧上，每X个物理资源块更新使用一次预编码码本；在子帧之间，每Y个连续子帧更新使用一次预编码码本，且子帧m+Y上最低物理资源块使用的码本与子帧m上最高物理资源块使用的码本为顺接关系，其中，m大于或等于0，X和Y为正整数。
在本公开一实施例中，所述第一预定义预编码方式包括：一个物理资源块使用两个预编码码本；所述预编码码本集合中的码本被依次编号为0至N-1，子帧j上的物理资源块k使用的两个预编码码本的编号分别为
Figure PCTCN2019104528-appb-000001
和
Figure PCTCN2019104528-appb-000002
其中，j、k大于或等于0，P为控制信道的数据传输所占用的物理资源块数或机器类通信物理下行控制信道MPDCCH的物理资源块集合包含的物理资源块数。
在本公开一实施例中，所述第二预定义预编码方式包括：一个物理资源块使用一个预编码码本；所述预编码码本集合中的码本被依次编号为0至N-1，子帧j的上物理资源块k使用的预编码码本的编号为
Figure PCTCN2019104528-appb-000003
Figure PCTCN2019104528-appb-000004
其中，j、k大于或等于0，P为控制信道的数据传输所占用的物理资源块数或机器类通信物理下行控制信道MPDCCH的物理资源块集合包含的物理资源块数。
在本公开一实施例中，所述基于所述预编码码本集合，控制信道依次循环使用所述预编码码本集合中码本，包括：在一个子帧上，每X个物理资源块更新使用一次预编码码本；在子帧之间，每Y个连续子帧更新使用一次预编码码本，且子帧m+Y上最低PRB使用的一个码本与子帧m上最高PRB使用的一个码本相同，其中，m大于或等于0，X和Y为正整数。
在本公开一实施例中，所述第一预定义预编码方式包括：一个物理资源块使用两个预编码码本；所述预编码码本集合中的码本被依次编号为0至N-1，子帧j上的物理资源块k使用的两个预编码码本的编号分别为
Figure PCTCN2019104528-appb-000005
和
Figure PCTCN2019104528-appb-000006
Figure PCTCN2019104528-appb-000007
其中，j、k大于或等于0，P为控制信道的数据传输所占用的物理资源块数或机器类通信物理下行控制信道MPDCCH的物理资源块集合包含的物理资源块数。
在本公开一实施例中，所述第二预定义预编码方式包括：一个物理资源块使用一个预编码码本；所述预编码码本集合中的码本被依次编号为0至N-1，子帧j的上物理资源块k使用的预编码码本的编号为
Figure PCTCN2019104528-appb-000008
Figure PCTCN2019104528-appb-000009
其中，j、k大于等于0，P为控制信道的数据传输所占用的物理资源块数或机器类通信物理下行控制信道MPDCCH的物理资源块集合包含的物理资源块数。
在本公开一实施例中，所述预编码码本集合包含：重复的预编码码本。
在本公开一实施例中，所述预编码码本集合包含：奇数个预编码码本。
在本公开一实施例中，所述第二预定义预编码的预编码方式包括：在一个子帧上，对于解调参考信号，每X个物理资源块更新使用一次预编码码本，对于数据，每L个资源单元更新使用一次预编码码本，其中，X和L均为正整数。
在本公开一实施例中，所述每L个资源单元更新一次预编码码本，包括：每个资源单元更新使用一次预编码码本，或每个资源单元组更新使用 一次预编码码本，或每个控制信道单元更新使用一次预编码码本。
在本公开一实施例中，所述第二预定义预编码的预编码方式包括：对于解调参考信号，根据物理资源块索引和子帧索引更新使用预编码码本；对于数据，根据资源单元索引或资源单元组索引或控制信道单元索引更新使用预编码码本。
在本公开一实施例中，当X等于控制信道物理资源块集合所包含的物理资源块数量时，控制信道的解调参考信号在频域上采用固定的预编码码本。
在本公开一实施例中，所述反馈预编码方式包括：通过控制信道发送控制信令，所述控制信令用于指示下一个控制信道使用的码本至少包括以下之一：最新的接收端反馈的预编码矩阵指示(Precoding Matrix Indicator，PMI)所对应的码本，第二预定义预编码方式所对应的码本。其中，所述最新的接收端反馈的PMI是发送端可用的最新的接收端反馈的PMI。
在本公开一实施例中，当所述控制信道用于调度传输模式4或传输模式6的物理共享信道时，利用预编码矩阵指示确认信令，指示下一个控制信道使用的码本至少包括以下之一：最新的接收端反馈的预编码矩阵指示所对应的码本，第二预定义预编码方式所对应的码本。
在本公开一实施例中，当所述控制信道用于调度传输模式9的物理共享信道时，利用天线端口和加扰特性信令指示下一个控制信道使用的码本至少包括以下之一：最新的接收端反馈的预编码矩阵指示所对应的码本，第二预定义预编码所对应的码本。
以下结合一示例对上述预编码处理过程进行说明，但不用于限定本公开实施例的技术方案。
根据控制信道类型确定预编码方法(相当于上述实施例提及的预编码方式)，所述预编码方法包括：预定义预编码和反馈预编码两种方式。类型一的公共搜索空间和类型二的公共搜索空间的控制信道采用第一预定义预编码；用户专用搜索空间的控制信道采用第二预定义预编码和/或反馈 预编码；类型三的公共搜索空间的控制信道采用第二预定义预编码和/或反馈预编码。
上述三种预编码方式包括：第一预定义预编码，第二预定义预编码，反馈预编码，其中，
所述预定义预编码包括：确定一个预编码码本集合；基于所述预编码码本集合，控制信道依次循环使用所述预编码码本集合中的码本。
进一步地，所述控制信道依次循环使用所述预编码码本集合中的码本，包含以下两种方案(方案一和方案二)。
方案一，在一个子帧上，每X个物理资源块更新一次预编码码本；在子帧之间，每Y个连续子帧更新一次预编码码本，且子帧m+Y上最小PRB使用的码本与子帧m上最大PRB使用的码本为顺接关系。
对于第一预定义预编码，一个PRB使用两个预编码码本。在方案一中，若所述预编码码本集合中的码本被依次编号为0至N-1，则第j个子帧上第k个物理资源块使用的两个预编码矩阵的索引分别为
Figure PCTCN2019104528-appb-000010
Figure PCTCN2019104528-appb-000011
和2·PX·jY+2·kX+1mod N。
对于第二预定义预编码，一个PRB使用一个预编码码本；在方案一中，若所述预编码码本集合中的码本被依次编号为0至N-1，则子帧j上物理资源块k使用的预编码码本的编号为
Figure PCTCN2019104528-appb-000012
其中，j、k大于等于0，P为控制信道数据传输所占用的PRB数或MPDCCH物理资源块集合包含的PRB数。
或
方案二，在一个子帧上，每X个物理资源块更新一次预编码码本；在子帧之间，每Y个连续子帧更新一次预编码码本，且子帧m+Y上最低PRB使用的一个码本与子帧m上最高PRB使用的一个码本相同。其中，m大于等于0，X、Y大于等于1。
对于第一预定义预编码，一个PRB使用两个预编码码本。在方案二中，若所述预编码码本集合中的码本被依次编号为0至N-1，则子帧j上物理资源块k使用的两个预编码码本的编号分别为
Figure PCTCN2019104528-appb-000013
Figure PCTCN2019104528-appb-000014
和2·PX-1·jY+2·kX+1mod N。其中，j、k大于等于0，P为控制信道数据传输所占用的PRB数或MPDCCH物理资源块集合包含的PRB数。
对于第一预定义预编码，一个物理资源块使用一个预编码码本；在方案二中，若所述预编码码本集合中的码本被依次编号为0至N-1，则子帧j上物理资源块k使用的预编码码本的编号为
Figure PCTCN2019104528-appb-000015
其中，j、k大于等于0，P为控制信道数据传输所占用的PRB数或MPDCCH物理资源块集合包含的PRB数。
第二预定义预编码还包括如下方案：在一个子帧上，对于解调参考信号，以X个物理资源块为更新粒度更新预编码码本；对于数据，以资源单元或资源单元组或控制信道单元为更新粒度更新预编码码本。
解调参考信号根据物理资源块索引和子帧索引更新预编码码本；数据根据资源单元索引或资源单元组索引或控制信道单元索引更新预编码码本。
反馈预编码方案如下：通过控制信道发送控制信令，所述控制信令指示下一个控制信道的预编码码本，在本公开实施例中，所述控制信道的预编码码本至少包括以下之一：最新的接收端反馈的预编码矩阵指示所对应的码本，第二预定义预编码所对应的码本。
当所述控制信道用于调度传输模式4或传输模式6的物理共享信道时，所述控制信令既指示物理共享信道的预编码码本，也指示所述控制信道的 预编码码本。
当所述控制信道用于调度传输模式9的物理共享信道时，所述控制信令既指示物理共享信道的天线端口和加扰特性，也指示所述控制信道的预编码码本。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到根据上述实施例的方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本公开的技术方案本质上或者说对相关技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端设备(可以是手机，计算机，服务器，或者网络设备等)执行本公开各个实施例所述的方法。
在本实施例中还提供了一种数据的预编码处理装置，该装置用于实现上述实施例及可选实施方式，已经进行过说明的不再赘述。如以下所使用的，术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。
图2是根据本公开实施例的数据的预编码处理装置的结构框图，如图2所示，该装置包括：
确定模块20，设置为根据控制信道类型确定预编码方式，所述预编码方式至少包括以下之一：预定义预编码，反馈预编码；
处理模块22，设置为根据所述预编码方式对控制信道的数据进行预编码处理。
通过本公开，能够根据控制信道类型确定预编码方式，进而根据预编码方式对控制信道的数据进行预编码处理，采用上述技术方案，解决了相关技术中，发送端采用何种编码方式对控制信道的数据进行预编码的问题，进而能够根据控制信道类型确定的预编码方式对控制信道的数据进行预 编码处理。
在本公开一实施例中，确定模块20，设置为至少根据控制信道的搜索空间类型确定预编码方式。
在本公开一实施例中，所述搜索空间类型至少包括以下之一：类型一公共搜索空间，类型二公共搜索空间，用户专用搜索空间，所述预编码方式至少包括以下之一：第一预定义预编码，第二预定义预编码，反馈预编码，其中，所述类型一公共搜索空间的控制信道采用所述第一预定义预编码；所述类型二公共搜索空间的控制信道采用所述第一预定义预编码；所述用户专用搜索空间的控制信道至少采用以下之一预编码方式：第一预定义预编码，第二预定义预编码，反馈预编码。
在本公开一实施例中，所述搜索空间类型还包括：类型三公共搜索空间，其中，所述类型三公共搜索空间的控制信道至少采用以下之一预编码方式：第一预定义预编码，第二预定义预编码，反馈预编码。
在本公开一实施例中，所述预定义预编码的预编码方式包括：确定一个预编码码本集合；基于所述预编码码本集合，控制信道依次循环使用所述预编码码本集合中的码本。
在本公开一实施例中，所述基于所述预编码码本集合，控制信道依次循环使用所述预编码码本集合中码本，包括：在一个子帧上，每X个物理资源块更新使用一次预编码码本；在子帧之间，每Y个连续子帧更新使用一次预编码码本，且子帧m+Y上最低物理资源块使用的码本与子帧m上最高物理资源块使用的码本为顺接关系，其中，m大于或等于0，X和Y为正整数。
在本公开一实施例中，所述第一预定义预编码方式包括：一个物理资源块使用两个预编码码本；所述预编码码本集合中的码本被依次编号为0至N-1，子帧j上的物理资源块k使用的两个预编码码本的编号分别为
Figure PCTCN2019104528-appb-000016
和
Figure PCTCN2019104528-appb-000017
其中，j、 k大于或等于0，P为控制信道的数据传输所占用的物理资源块数或机器类通信物理下行控制信道MPDCCH的物理资源块集合包含的物理资源块数。
在本公开一实施例中，所述第二预定义预编码方式包括：一个物理资源块使用一个预编码码本；所述预编码码本集合中的码本被依次编号为0至N-1，子帧j的上物理资源块k使用的预编码码本的编号为
Figure PCTCN2019104528-appb-000018
Figure PCTCN2019104528-appb-000019
其中，j、k大于或等于0，P为控制信道的数据传输所占用的物理资源块数或机器类通信物理下行控制信道MPDCCH的物理资源块集合包含的物理资源块数。
在本公开一实施例中，所述基于所述预编码码本集合，控制信道依次循环使用所述预编码码本集合中码本，包括：在一个子帧上，每X个物理资源块更新使用一次预编码码本；在子帧之间，每Y个连续子帧更新使用一次预编码码本，且子帧m+Y上最低PRB使用的一个码本与子帧m上最高PRB使用的一个码本相同，其中，m大于或等于0，X和Y为正整数。
在本公开一实施例中，所述第一预定义预编码方式包括：一个物理资源块使用两个预编码码本；所述预编码码本集合中的码本被依次编号为0至N-1，子帧j上的物理资源块k使用的两个预编码码本的编号分别为
Figure PCTCN2019104528-appb-000020
和
Figure PCTCN2019104528-appb-000021
Figure PCTCN2019104528-appb-000022
其中，j、k大于或等于0，P为控制信道的数据传输所占用的物理资源块数或机器类通信物理下行控制信道MPDCCH的物理资源块集合包含的物理资源块数。
在本公开一实施例中，所述第二预定义预编码方式包括：一个物理资源块使用一个预编码码本；所述预编码码本集合中的码本被依次编号为0 至N-1，子帧j的上物理资源块k使用的预编码码本的编号为
Figure PCTCN2019104528-appb-000023
Figure PCTCN2019104528-appb-000024
其中，j、k大于等于0，P为控制信道的数据传输所占用的物理资源块数或机器类通信物理下行控制信道MPDCCH的物理资源块集合包含的物理资源块数。
在本公开一实施例中，所述预编码码本集合包含：重复的预编码码本。
在本公开一实施例中，所述预编码码本集合包含：奇数个预编码码本。
在本公开一实施例中，所述第二预定义预编码的预编码方式包括：在一个子帧上，对于控制信道的解调参考信号，每X个物理资源块更新使用一次预编码码本，对于控制信道的数据，每L个资源单元更新使用一次预编码码本，其中，X和L均为正整数。
在本公开一实施例中，所述每L个资源单元更新一次预编码码本，包括：控制信道的数据每个资源单元更新使用一次预编码码本，或每个资源单元组更新使用一次预编码码本，或每个控制信道单元更新使用一次预编码码本。
在本公开一实施例中，所述第二预定义预编码的预编码方式包括：对于控制信道的解调参考信号，根据物理资源块索引和子帧索引更新使用预编码码本；对于控制信道的数据，根据资源单元索引或资源单元组索引或控制信道单元索引更新使用预编码码本。
在本公开一实施例中，当X等于控制信道物理资源块集合所包含的物理资源块数量时，控制信道的解调参考信号在频域上采用固定的预编码码本。
在本公开一实施例中，所述反馈预编码方式包括：通过控制信道发送控制信令，所述控制信令用于指示下一个控制信道使用的码本至少包括以下之一：接收端最新反馈的预编码矩阵指示所对应的码本，使用第二预定义预编码方式所对应的码本。
在本公开一实施例中，当所述控制信道用于调度传输模式4或传输模 式6的物理共享信道时，利用预编码矩阵指示确认信令，指示下一个控制信道使用的码本至少包括以下之一：接收端最新反馈的预编码矩阵指示所对应的码本，使用第二预定义预编码方式所对应的码本。
在本公开一实施例中，当所述控制信道用于调度传输模式9的物理共享信道时，利用天线端口和加扰特性信令指示下一个控制信道使用的码本至少包括以下之一：接收端最新反馈的预编码矩阵指示所对应的码本，使用第二预定义预编码所对应的码本。
需要说明的是，上述实施例1-实施例2的技术方案可以结合使用，也可以单独使用，本公开实施例对此不作限定。
以下结合可选实施例对上述技术方案进行说明，但不用于限定本公开实施例的技术方案。
可选实施例1
本公开可选实施例1提供了一种控制信道的预编码方法，所述方法包括：
根据控制信道类型确定预编码方法，所述预编码方法包括预定义预编码和反馈预编码；根据所述预编码方法对控制信道数据进行预编码处理。
在本公开可选实施例1中，至少根据控制信道的搜索空间类型确定预编码方法。类型一公共搜索空间(Common Search Space，简称为CSS)和类型二公共搜索空间的控制信道采用第一预定义预编码；用户专用搜索空间(UE-specific Search Space，简称为USS)的控制信道采用第二预定义预编码和/或反馈预编码。其中，类型一公共搜索空间表示MPDCCH的类型1公共搜索空间(type-1CSS),类型二公共搜索空间表示MPDCCH的类型2公共搜索空间(type-2CSS)。
在本公开可选实施例1中，类型三公共搜索空间的控制信道采用第二预定义预编码和/或反馈预编码，其中，类型三公共搜索空间表示MPDCCH的类型0公共搜索空间(type-0CSS)。
在本公开实施例1中，所述预定义预编码包括：确定一个预编码码本 集合；基于所述预编码码本集合，控制信道依次循环使用所述预编码码本集合中的码本。接收端端已知所述预定义预编码的码本更新规律，就能确定控制信道使用的预编码码本。其中，一个预编码码本就是一个预编码矩阵。
可选地，所述预定义预编码包括：基于所述预编码码本集合，在频域上，每X个物理资源块更新一次预编码码本，在所述X个连续PRB内使用的预编码矩阵不变；在时域上，每Y个连续子帧(Subframe)更新一次预编码码本，针对任意一个PRB，在所述Y个连续子帧内，所述PRB使用的预编码矩阵不变。并且，子帧m+Y上最低PRB使用的码本与子帧m上最高PRB使用的码本为顺接关系。所述最低PRB指索引最小的PRB或频率最低的PRB，最高PRB指索引最大的PRB或频率最高的PRB。其中，m大于等于0，X、Y大于等于1。
可选地，假设所述预编码码本集合中的码本被依次编号为0至N-1，若第m子帧最后一个更新的预编码矩阵的索引为n，0≤n≤N-1，则第m+Y子帧从索引(n+1)mod N开始，继续循环使用集合中的码本。例如，若预编码码本集合包含5个码本，依次编号为0至4，且每个子帧遍历4个码本，则第m子帧在频域上依次使用的码本编号为{0,1,2,3}，则第m+Y子帧、第m+2Y子帧、第m+3Y子帧、第m+4Y子帧使用的码本编号分别为{4,0,1,2}、{3,4,0,1}、{2,3,4,0}、{1,2,3,4}，以此类推。
对于第一预定义预编码，在一个PRB上，使用两个预编码矩阵对数据进行预编码处理，负载数据的资源单元(Resource Element，RE)交替使用所述两个预编码矩阵。由此，针对于子帧j上的物理资源块k，其使用的两个预编码码本的编号分别为
Figure PCTCN2019104528-appb-000025
和
Figure PCTCN2019104528-appb-000026
其中，j、k＝0,1,2,3……，P为控制信道数据传输所占用的PRB数或MPDCCH物理资源块集合(MPDCCH-PRB-set)包含的PRB数，所述MPDCCH-PRB-set为接收端 监测的所有MPDCCH-PRB-set。
对于第二预定义预编码，在一个PRB上，使用一个预编码矩阵对数据进行预编码处理。由此，针对于子帧j上的物理资源块k，其使用的预编码码本的编号为
Figure PCTCN2019104528-appb-000027
其中，j、k＝0,1,2,3……，P为控制信道数据传输所占用的PRB数或MPDCCH-PRB-set包含的PRB数，所述MPDCCH-PRB-set为接收端监测的所有MPDCCH-PRB-set。
可选地，本实施例中，预编码码本集合中可以包含重复的码本。
可选地，本实施例中，预编码码本集合中可以包含奇数个码本，这样可以确保一个PRB在时域更新时遍历所有码本。
可选地，所述预定义预编码还包括：基于所述预编码码本集合，在频域上，每X个物理资源块更新一次预编码码本，在所述X个连续PRB内使用的预编码矩阵不变；在时域上，每Y个连续子帧(Subframe)更新一次预编码码本，针对任意一个PRB，在所述Y个连续子帧内，所述PRB使用的预编码矩阵不变。并且，子帧m+Y上最低PRB使用的一个码本与子帧m上最高PRB使用的一个码本相同。所述最低PRB指索引最小的PRB或频率最低的PRB，最高PRB指索引最大的PRB或频率最高的PRB。其中，m大于等于0，X、Y大于等于1。
可选地，假设所述预编码码本集合中的码本被依次编号为0至N-1，若第m子帧最后一个更新的预编码矩阵的编号为n，0≤n≤N-1，则第m+Y子帧从编号n开始，继续循环使用集合中的码本。例如，若预编码码本集合包含5个码本，依次编号为0至4，且每个子帧遍历4个码本，则第m子帧在频域上依次使用的码本编号为{0,1,2,3}，则第m+Y子帧、第m+2Y子帧、第m+3Y子帧、第m+4Y子帧使用的码本编号分别为{3,4,0,1}、{1,2,3,4}、{4,0,1,2}、{2,3,4,0}，以此类推。
对于第一预定义预编码，在一个PRB上，使用两个预编码矩阵对数据进行预编码处理，负载数据的RE交替使用所述两个预编码矩阵。由此， 针对于子帧j上的物理资源块k，其使用的两个预编码码本的编号分别为
Figure PCTCN2019104528-appb-000028
和
Figure PCTCN2019104528-appb-000029
Figure PCTCN2019104528-appb-000030
其中，j、k＝0,1,2,3……，P为控制信道数据传输所占用的PRB数或MPDCCH物理资源块集合(MPDCCH-PRB-set)包含的PRB数，所述MPDCCH-PRB-set为接收端监测的所有MPDCCH-PRB-set。
对于第二预定义预编码，在一个PRB上，使用一个预编码矩阵对数据进行预编码处理。由此，针对于子帧j上的物理资源块k，其使用的预编码码本的编号为
Figure PCTCN2019104528-appb-000031
其中，j、k＝0,1,2,3……，P为控制信道数据传输所占用的PRB数或MPDCCH-PRB-set包含的PRB数，所述MPDCCH-PRB-set为接收端监测的所有MPDCCH-PRB-set。
本实施例中，预编码码本的时域更新是基于绝对子帧索引(Absolute Subframe Index)进行更新的。
本实施例中，所述每Y个连续子帧(Subframe)更新一次预编码码本，其中Y等于跳频间隔配置参数。
可选地，本实施例中，第二预定义预编码还包括：在一个子帧上，对于解调参考信号，每X个PRB更新一次预编码码本，对于数据，每L个资源单元(Resource Element，RE)更新一次预编码码本。也就是说，每X个PRB上的DMRS更新一次码本，每L个RE上的数据更新一次码本。其中，X，L为大于等于1的整数。
通过上述技术方案，如果第二预定义预编码在每个PRB上只使用一个预编码码本，那么在一个子帧上能够遍历的码本数量就较少，因此，将数据每L个RE更新一次预编码矩阵，使更新粒度比PRB更小，由此能够遍历更多码本，获得更好的分集增益，而DMRS以PRB为更新粒度是为了接收端能够利用DMRS进行信道估计。需要注意的是，这种预编码方法的适用范围不局限于上述搜索空间和控制信道，它也可作为一种独立的 预编码方法，用于其他物理信道。
可选地，所述每L个RE更新一次预编码码本，包括：每个RE更新一次预编码码本，或每个资源单元组(Resource Element Group，REG)更新一次预编码码本，或每个控制信道单元(Control Channel Element，CCE)更新一次预编码码本。其中，资源单元组也包含增强型资源单元组(Enhanced Resource Element Group，EREG)，控制信道单元也包含增强型控制信道单元(Enhanced Control Channel Element，ECCE)。
例如，假设发送端配置集中式(Localized)传输MPDCCH的聚合等级为4个ECCEs，则MPDCCH数据传输占用了一个PRB。所以，在一个子帧上，DMRS只能遍历一个码本。对于数据，若以ECCE为更新粒度更新码本，则一个子帧内能够更新4次码本；若以EREG为更新粒度更新码本，1ECCE＝4EREG，则一个子帧内能够更新16次码本；若以RE为更新粒度更新码本，则每个RE切换一次码本。
可选地，控制信道的DMRS根据PRB索引(PRB Index)和子帧索引(Subframe Index)更新预编码码本；控制信道的数据根据RE索引或资源单元组索引或控制信道单元索引更新预编码码本。其中，所述索引也可称为序号或编号。接收端已知预编码码本的更新规律，因此可以确定MPDCCH所使用的预编码矩阵。
可选地，当所述X等于MPDCCH-PRB-set所包含的物理资源块数量时，控制信道的DMRS在频域上采用固定的预编码码本，即DMRS在频域上不更新预编码码本，所有PRB的DMRS使用相同的预编码码本。
本实施例中，所述反馈预编码包括：通过控制信道发送控制信令，所述控制信令指示下一个控制信道的预编码码本信息。接收端接收到所述控制信令，利用所述信令指示的所述预编码码本的信息，解调下一个控制信道的数据。
本实施例中，一个控制信道包含一个或多个控制信道子帧，一个控制信道所包含的控制信道子帧数等于控制信道的重复次数。
本实施例中，所述控制信道的预编码码本信息包括：控制信道使用最新的接收端反馈的PMI所对应的码本或者使用第二预定义预编码所对应的码本。因此，所述控制信令指示了下一个控制信道使用最新的接收端反馈的PMI所对应的码本或者使用第二预定义预编码所对应的码本。
其中，所述最新的接收端反馈的PMI是发送端可用的最新的PMI。
可选地，所述控制信令为控制信道中现有的指示信令，不增加额外的信令开销。
可选地，当所述控制信道用于调度传输模式(Transmission mode，TM)4或传输模式6的物理共享信道(Physical Downlink Shared Channel，PDSCH)时，所述控制信令为预编码矩阵指示确认(PMI confirmation for precoding)，所述信令在指示PDSCH的预编码矩阵指示确认信息的同时，也指示所述控制信道的预编码码本信息。
当所述控制信道用于调度TM9的PDSCH时，所述控制信令为天线端口和加扰特性(Antenna port(s)and scrambling identity)，所述控制信令在指示PDSCH的天线端口和加扰特性的同时，也指示所述控制信道的预编码码本信息。
可选实施例2
本公开可选实施例2为预定义预编码的一个具体实施例，应用于MPDCCH，所述方法包括：
步骤1，确定MPDCCH的预编码码本集合。
本可选实施例2中，所述预编码码本集合包含N个码本，依次编号为0至N-1。可选地，所述预编码码本集合可以包含重复的码本，可选地，N可以为奇数。
本可选实施例2中，发送端可根据不同的发射天线数为所述预编码码本集合配置不同的码本数量N。N可定义为发送端和接收端已知的默认值， 每一种发射天线数量对应一个N值。可选地，对于2发射天线，共有4个单层预编码码本，因此发送端可为所述预编码码本集合配置4个可用的预编码码本或大于4的奇数个码本；对于4发射天线，共有16个单层预编码码本，因此发送端可为所述预编码码本集合配置16个可用的预编码码本或大于16的奇数个码本。
可选地，码本在集合中的排列顺序能够确保每个MPDCCH子帧使用的码本的矢量方向尽可能遍历更大的角度。码本在集合中的排列顺序可设定为发送端和接收端已知的默认配置，例如针对不同的发射天线数，设定相应默认的码本使用顺序；可选地，预定义的码本使用顺序也可以由高层信令通知。
步骤2，基于所述预编码码本集合，在频域上，每X个物理资源块更新一次预编码码本；在时域上，每Y个连续子帧更新一次预编码码本。
可选地，对于2发射天线，预编码码本集合包含4个码本，依次编号为0至3，则码本循环使用的顺序为{0,1,2,3,0,1,2,3,0,1,2,3,0,1,2,3,...}；对于4发射天线，预编码码本集合包含16个码本，依次编号为0至15，则码本循环使用的顺序为{0,1,2,3,...,14,15,0,1,2,3,...,14,15,0,1,2,3,...,14,15,...}。
假设接收端监测的MPDCCH-PRB-set为6个PRB，频域上每2个PRB更新一次预编码码本，时域上每Y个连续子帧更新一次码本。则有：
当MPDCCH采用第一预定义预编码时，对于2发射天线，子帧j上的物理资源块k使用的两个预编码码本编号分别为
Figure PCTCN2019104528-appb-000032
Figure PCTCN2019104528-appb-000033
和2·3·jY+2·k2+1mod 4。对于4发射天线，子帧j上的物理资源块k使用的两个预编码码本编号分别为
Figure PCTCN2019104528-appb-000034
和
Figure PCTCN2019104528-appb-000035
可选地，4发射天线配置下每个PRB使用的预编码码本编号如图3所示。
当MPDCCH采用第二预定义预编码时，对于2发射天线，子帧j上 的物理资源块k使用的预编码码本编号为
Figure PCTCN2019104528-appb-000036
可选地，2发射天线配置下每个PRB使用的预编码码本编号如图4所示；对于4发射天线，子帧j上的物理资源块k使用的预编码码本编号为
Figure PCTCN2019104528-appb-000037
Figure PCTCN2019104528-appb-000038
可选地，本可选实施例2中，对于2发射天线，预编码码本集合包含5个码本，依次编号为0至4，则码本循环使用的顺序为{0,1,2,3,4,0,1,2,3,4,0,1,2,3,4,0,1,2,3,4,...}；对于4发射天线，预编码码本集合包含17个码本，依次编号为0至16，则码本循环使用的顺序为{0,1,2,3,...,14,15,16,0,1,2,3,...,14,15,16,0,1,2,3,...,14,15,16,...}。
假设接收端监测的MPDCCH-PRB-set为4个PRB，频域上每个PRB更新一次预编码码本，时域上每Y个连续子帧更新一次码本。则有：
当MPDCCH采用第一预定义预编码时，对于2发射天线，子帧j上的物理资源块k使用的两个预编码码本编号分别为
Figure PCTCN2019104528-appb-000039
Figure PCTCN2019104528-appb-000040
和2·4·jY+2·k+1mod 5，可选地，2发射天线配置下每个PRB使用的预编码码本编号如图5所示；对于4发射天线，子帧j上的物理资源块k使用的两个预编码码本编号分别为
Figure PCTCN2019104528-appb-000041
和
Figure PCTCN2019104528-appb-000042
当MPDCCH采用第二预定义预编码时，对于2发射天线，子帧j上的物理资源块k使用的预编码码本编号为
Figure PCTCN2019104528-appb-000043
对于4发射天线，子帧j上的物理资源块k使用的预编码码本编号为
Figure PCTCN2019104528-appb-000044
Figure PCTCN2019104528-appb-000045
可选地，4发射天线配置下每个PRB使用的预编码码本编号如图6所示。
本可选实施例2中，预编码码本的时频域更新粒度可以设定为默认配置，例如针对不同的MPDCCH-PRB-set配置，设定相应默认的频域更新粒度；可选地，预编码码本的时频域更新粒度也可以由高层信令通知。
可选实施例3
本公开可选实施例3提供了一种预编码矩阵指示方法，应用于用户专用搜索空间的物理控制信道，所述方法包括：
通过控制信道发送控制信令，所述控制信令指示下一个控制信道使用接收端最新反馈的PMI所对应的码本或者使用第二预定义预编码所对应的码本。接收端接收到所述控制信令，即可确定MPDCCH使用的预编码矩阵。
可选地，第K个控制信道发送的所述信令指示第K+1个控制信道所使用的预编码矩阵的信息，K大于等于1。接收端在接收到第K个控制信道发送的所述控制信令后，利用所述信令指示的预编码矩阵信息，解调第K+1个控制信道时频资源的数据。由此，接收端能够针对控制信道实现CRS和DMRS联合信道估计。
本可选实施例3中，一个控制信道包含一个或多个控制信道子帧，一个控制信道所包含的控制信道子帧数等于控制信道的重复次数。
本可选实施例3中，所述控制信令为控制信道中现有的指示信令，不增加额外的信令开销。
本可选实施例3中，当所述控制信道用于调度TM4或TM6的PDSCH时，利用现有的控制信令“预编码矩阵指示确认(PMI confirmation for precoding)”来指示所述控制信道的预编码码本信息。所述控制信令既指示PDSCH预编码矩阵指示确认的信息，也指示所述控制信道的预编码码本信息。
可选地，所述预编码矩阵指示确认信令为1比特信息，当所述控制信令的值为1时，PDSCH使用最新的接收端反馈的PMI所对应的码本，控 制信道也使用最新的接收端反馈的PMI所对应的码本；当所述控制信令的值为0时，控制信道使用第二预定义预编码所对应的码本。
本可选实施例3中，当所述控制信道用于调度TM9的PDSCH时，利用现有的控制信令“天线端口和加扰特性(Antenna port(s)and scrambling identity)”来指示所述控制信道的预编码码本信息。所述控制信令既指示PDSCH的天线端口和加扰特性，也指示所述控制信道的预编码码本信息。
可选地，所述天线端口和加扰特性信令为2比特信息。利用该信令指示所述控制信道的预编码码本信息可以采用如下两种方式之一：
方式一，利用两个天线端口的切换指示控制信道使用最新的接收端反馈的PMI所对应的码本还是使用第二预定义预编码所对应的码本。可选地，由天线端口7指示控制信道使用最新的接收端反馈的PMI所对应的码本，或者由天线端口8指示控制信道使用最新的接收端反馈的PMI所对应的码本，另外一个天线端口指示控制信道使用第二预定义预编码所对应的码本。
方式二，利用两个加扰特性nSCID的值指示控制信道使用最新的接收端反馈的PMI所对应的码本还是使用第二预定义预编码所对应的码本。可选地，nSCID＝1指示控制信道使用最新的接收端反馈的PMI所对应的码本，nSCID＝0指示控制信道使用第二预定义预编码所对应的码本。
其中，所述最新的接收端反馈的PMI是发送端可用的最新的PMI。
可选实施例4
本公开可选实施例4可以理解为可选实施例3的一个具体实施例，应用于Localized MPDCCH，所述方法包括：
步骤201，通过MPDCCH发送控制信令，所述控制信令指示下一个MPDCCH使用接收端最新反馈的PMI所对应的码本或者使用第二预定义预编码所对应的码本。
本可选实施例4中，第K个MPDCCH发送的所述控制信令指示第K+1个MPDCCH是使用最新的接收端反馈的PMI所对应的码本还是使用第二预定义预编码所对应的码本。
本可选实施例4中，一个MPDCCH在时域上为R个子帧，R等于MPDCCH重复次数，在频域上为接收端监测的所有MPDCCH-PRB-set。图7为MPDCCH非重复下所述控制信令的指示关系。当MPDCCH为非重复传输时，R＝1。
步骤202，接收端在接收到第K个MPDCCH发送的所述控制信令后，确定第K+1个MPDCCH使用的预编码码本，解调第K+1个MPDCCH的数据。
本可选实施例4中，当MPDCCH用于调度TM6的PDSCH时，所述控制信令为预编码矩阵指示确认信令。接收端接收到第K个MPDCCH发送的所述控制信令，若所述控制信令等于0，则第K+1个MPDCCH采用第二预定义预编码所对应的码本，所述第二预定义预编码为发送端和接收端的默认配置，接收端已知第二预定义预编码的使用规律，因此可以确定第K+1个MPDCCH使用的预编码矩阵，使用CRS和DMRS联合信道估计；若所述控制信令等于1，则第K+1个MPDCCH采用最新的接收端反馈的PMI所对应的预编码码本，接收端上报PMI时保存了这个信息，因此可以确定第K+1个MPDCCH使用的预编码矩阵，进而解调第K+1个MPDCCH数据。
本可选实施例4中，当MPDCCH用于调度TM9的PDSCH时，所述控制信令为天线端口和加扰特性信令。所述控制信令为2比特信息，利用两个加扰特性nSCID的值指示控制信道使用最新的接收端反馈的PMI所对应的码本还是使用第二预定义预编码所对应的码本。
一个具体操作方式是：接收端接收到第K个MPDCCH发送的所述控制信令，若所述控制信令等于0或2，即nSCID＝0，则第K+1个MPDCCH采用第二预定义预编码所对应的码本；若所述控制信令等于1或3，即nSCID＝1，则第K+1个MPDCCH采用最新的接收端反馈的PMI所对应的预编码码本。由此，接收端能够确定第K+1个MPDCCH使用的预编码矩 阵，使用CRS和DMRS联合信道估计。
本可选实施例4中，当CRS和DMRS联合信道估计被使能时，接收端默认第一个MPDCCH采用第一预定义预编码或第二预定义预编码，由此解调第一个MPDCCH数据。
本公开的实施例还提供了一种存储介质，该存储介质包括存储的程序，其中，上述程序运行时执行上述任一项的方法。
可选地，在本实施例中，上述存储介质可以被设置为存储用于执行以下步骤的程序代码：
S1，发送端根据控制信道类型确定预编码方式，所述预编码方式至少包括以下之一：预定义预编码，反馈预编码；
S2，发送端根据所述预编码方式对控制信道的数据进行预编码处理。
可选地，在本实施例中，上述存储介质可以包括但不限于：U盘、只读存储器(Read-Only Memory，简称为ROM)、随机存取存储器(Random Access Memory，简称为RAM)、移动硬盘、磁碟或者光盘等各种可以存储程序代码的介质。
可选地，本实施例中的具体示例可以参考上述实施例及可选实施方式中所描述的示例，本实施例在此不再赘述。
显然，本领域的技术人员应该明白，上述的本公开的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本公开不限制于任何特定的硬件和软件结合。
以上所述仅为本公开的可选实施例而已，并不用于限制本公开，对于本领域的技术人员来说，本公开可以有各种更改和变化。凡在本公开的原则之内，所作的任何修改、等同替换、改进等，均应包含在本公开的保护范围之内。
工业实用性
通过本公开实施例的上述技术方案，能够根据控制信道类型确定预编码方式，进而根据预编码方式对控制信道的数据进行预编码处理，采用上述技术方案，解决了相关技术中，发送端采用何种编码方式对控制信道的数据进行预编码的问题，进而能够根据控制信道类型确定的预编码方式对控制信道的数据进行预编码处理。

Claims (23)

  1. 一种数据的预编码处理方法，包括：
    根据控制信道类型确定预编码方式，所述预编码方式至少包括以下之一：预定义预编码，反馈预编码；
    根据所述预编码方式对控制信道的数据进行预编码处理。
  2. 如权利要求1所述的方法，其中，根据控制信道类型确定预编码方式，包括：
    至少根据控制信道的搜索空间类型确定预编码方式。
  3. 如权利要求2所述的方法，其中，所述搜索空间类型至少包括以下之一：类型一公共搜索空间，类型二公共搜索空间，用户专用搜索空间，所述预编码方式至少包括以下之一：第一预定义预编码，第二预定义预编码，反馈预编码，其中，
    所述类型一公共搜索空间的控制信道采用所述第一预定义预编码；
    所述类型二公共搜索空间的控制信道采用所述第一预定义预编码；
    所述用户专用搜索空间的控制信道至少采用以下之一预编码方式：第一预定义预编码，第二预定义预编码，反馈预编码。
  4. 如权利要求3所述的方法，其中，所述搜索空间类型还包括：类型三公共搜索空间，其中，
    所述类型三公共搜索空间的控制信道至少采用以下之一预编码方式：第一预定义预编码，第二预定义预编码，反馈预编码。
  5. 如权利要求1任一项所述的方法，其中，所述预定义预编码 的预编码方式包括：确定一个预编码码本集合；基于所述预编码码本集合，控制信道依次循环使用所述预编码码本集合中的码本。
  6. 如权利要求5所述的方法，其中，所述基于所述预编码码本集合，控制信道依次循环使用所述预编码码本集合中码本，包括：
    在一个子帧上，每X个物理资源块更新使用一次预编码码本；
    在子帧之间，每Y个连续子帧更新使用一次预编码码本，且子帧m+Y上最低物理资源块使用的码本与子帧m上最高物理资源块使用的码本为顺接关系，其中，m大于或等于0，X和Y为正整数。
  7. 如权利要求1至6任一项所述的方法，其中，所述第一预定义预编码方式包括：一个物理资源块使用两个预编码码本；所述预编码码本集合中的码本被依次编号为0至N-1，则子帧j上的物理资源块k使用的两个预编码码本的编号分别为
    Figure PCTCN2019104528-appb-100001
    和
    Figure PCTCN2019104528-appb-100002
    其中，j、k大于或等于0，P为控制信道的数据传输所占用的物理资源块数或机器类通信物理下行控制信道MPDCCH的物理资源块集合包含的物理资源块数。
  8. 如权利要求1至6任一项所述的方法，其中，所述第二预定义预编码方式包括：一个物理资源块使用一个预编码码本；所述预编码码本集合中的码本被依次编号为0至N-1，则子帧j的上物理资源块k使用的预编码码本的编号为
    Figure PCTCN2019104528-appb-100003
    其中，j、k大于或等于0，P为控制信道的数据传输所占用的物理资源块数或机器类通信物理下行控制信道MPDCCH的物理资源块集合包含的物理资源块数。
  9. 如权利要求5所述的方法，其中，所述基于所述预编码码本集合，控制信道依次循环使用所述预编码码本集合中码本，包括：在一个子帧上，每X个物理资源块更新使用一次预编码码本；在子帧之间，每Y个连续子帧更新使用一次预编码码本，且子帧m+Y上最低物理资源块使用的一个码本与子帧m上最高物理资源块使用的一个码本相同，其中，m大于或等于0，X和Y为正整数。
  10. 如权利要求1至5、9任一项所述的方法，其中，所述第一预定义预编码方式包括：一个物理资源块使用两个预编码码本；所述预编码码本集合中的码本被依次编号为0至N-1，则子帧j上的物理资源块k使用的两个预编码码本的编号分别为
    Figure PCTCN2019104528-appb-100004
    Figure PCTCN2019104528-appb-100005
    和2·PX-1·jY+2·kX+1mod N，其中，j、k大于或等于0，P为控制信道的数据传输所占用的物理资源块数或机器类通信物理下行控制信道MPDCCH的物理资源块集合包含的物理资源块数。
  11. 如权利要求1至5、9任一项所述的方法，其中，所述第二预定义预编码方式包括：一个物理资源块使用一个预编码码本；所述预编码码本集合中的码本被依次编号为0至N-1，则子帧j的上物理资源块k使用的预编码码本的编号为
    Figure PCTCN2019104528-appb-100006
    其中，j、k大于等于0，P为控制信道的数据传输所占用的物理资源块数或机器类通信物理下行控制信道MPDCCH的物理资源块集合包含的物理资源块数。
  12. 如权利要求5所述的方法，其中，所述预编码码本集合包含： 重复的预编码码本。
  13. 如权利要求5所述的方法，其中，所述预编码码本集合包含：奇数个预编码码本。
  14. 如权利要求3或4所述的方法，其中，所述第二预定义预编码的预编码方式包括：在一个子帧上，对于解调参考信号，每X个物理资源块更新使用一次预编码码本，对于数据，每L个资源单元更新使用一次预编码码本，其中，X和L均为正整数。
  15. 如权利要求14所述的方法，其中，所述每L个资源单元更新一次预编码码本，包括：每个资源单元更新使用一次预编码码本，或每个资源单元组更新使用一次预编码码本，或每个控制信道单元更新使用一次预编码码本。
  16. 如权利要求14所述的方法，其中，所述第二预定义预编码的预编码方式包括：对于解调参考信号，根据物理资源块索引和子帧索引更新使用预编码码本；对于数据，根据资源单元索引或资源单元组索引或控制信道单元索引更新使用预编码码本。
  17. 如权利要求14所述的方法，其中，当X等于控制信道物理资源块集合所包含的物理资源块数量时，控制信道的解调参考信号在频域上采用固定的预编码码本。
  18. 如权利要求3或4所述的方法，其中，所述反馈预编码方式包括：通过控制信道发送控制信令，所述控制信令设置为指示下一个控制信道使用的码本至少包括以下之一：最新的接收端反馈的预编码矩阵指示所对应的码本，第二预定义预编码方式所对应的码本。
  19. 如权利要求18所述的方法，其中，当所述控制信道设置为调度传输模式4或传输模式6的物理共享信道时，利用预编码矩阵指 示确认信令，指示下一个控制信道使用的码本至少包括以下之一：最新的接收端反馈的预编码矩阵指示所对应的码本，第二预定义预编码方式所对应的码本。
  20. 如权利要求18所述的方法，其中，当所述控制信道设置为调度传输模式9的物理共享信道时，利用天线端口和加扰特性信令指示下一个控制信道使用的码本至少包括以下之一：最新的接收端反馈的预编码矩阵指示所对应的码本，第二预定义预编码所对应的码本。
  21. 一种数据的预编码处理装置，包括：
    确定模块，设置为根据控制信道类型确定预编码方式，所述预编码方式至少包括以下之一：预定义预编码，反馈预编码；
    处理模块，设置为根据所述预编码方式对控制信道的数据进行预编码处理。
  22. 如权利要求21所述的装置，其中，所述确定模块，还设置为至少根据控制信道的搜索空间类型确定预编码方式。
  23. 一种存储介质，所述存储介质中存储有计算机程序，其中，所述计算机程序被设置为运行时执行所述权利要求1至20任一项中所述的方法。
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