WO2018184513A1 - 一种数据处理方法，基站以及接收设备 - Google Patents

一种数据处理方法，基站以及接收设备 Download PDF

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Publication number
WO2018184513A1
WO2018184513A1 PCT/CN2018/081566 CN2018081566W WO2018184513A1 WO 2018184513 A1 WO2018184513 A1 WO 2018184513A1 CN 2018081566 W CN2018081566 W CN 2018081566W WO 2018184513 A1 WO2018184513 A1 WO 2018184513A1
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Prior art keywords
ofdm symbol
demodulation pilot
pilot pattern
ofdm
ofdm symbols
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PCT/CN2018/081566
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English (en)
French (fr)
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刘鹍鹏
李雪茹
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华为技术有限公司
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Priority to BR112019018411A priority Critical patent/BR112019018411A2/pt
Priority to EP18781392.8A priority patent/EP3579483B1/en
Publication of WO2018184513A1 publication Critical patent/WO2018184513A1/zh
Priority to US16/584,954 priority patent/US11108533B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0057—Block codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H04L1/1816—Hybrid protocols; Hybrid automatic repeat request [HARQ] with retransmission of the same, encoded, message
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H04L27/2613—Structure of the reference signals
    • 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
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/02—Channels characterised by the type of signal
    • H04L5/06—Channels characterised by the type of signal the signals being represented by different frequencies
    • H04L5/10—Channels characterised by the type of signal the signals being represented by different frequencies with dynamo-electric generation of carriers; with mechanical filters or demodulators
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0008—Modulated-carrier systems arrangements for allowing a transmitter or receiver to use more than one type of modulation
    • 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
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated

Definitions

  • the present application relates to the field of communications, and in particular, to a data processing method, a base station, and a receiving device.
  • the demodulation reference signal (English full name: Demodulation Reference Signal, DMRS) of the service data is simultaneously transmitted with the service data, and is located in the same time-frequency resource range.
  • DMRS Demodulation Reference Signal
  • each layer of data has a corresponding DMRS port.
  • the DMRS on the DMRS port of each layer of data is subjected to the same precoding as the layer data, so channel estimation can be performed by using the DMRS of the layer data as the channel experienced by the layer data transmission, and the data is demodulated for the layer data. And decoding.
  • the plurality of DMRS ports perform code division multiplexing by using orthogonal codes (English full name: Orthogonal cover code, OCC for short) in the frequency domain and/or the time domain.
  • orthogonal codes English full name: Orthogonal cover code, OCC for short
  • the base station can simultaneously carry the demodulation reference signals of multiple ports in the same time-frequency resource, and does not cause interference between different ports, thereby greatly reducing the overhead of the DMRS; on the other hand, by using in the frequency domain Code division multiplexing, with spread spectrum gain, helps improve channel estimation performance.
  • the DMRS port of each codeword occupies the same Orthogonal Frequency Division Multiplexing (OFDM) symbol and is occupied.
  • OFDM Orthogonal Frequency Division Multiplexing
  • the DMRS port of each codeword occupies the same time-frequency resource unit (English name: Resource Element, RE: RE), that is, the DMRS port of each codeword occupies the same time-frequency resource.
  • RE Resource Element
  • the frequency domain density of the DMRS ports of the plurality of codewords is the same on the occupied OFDM symbols.
  • the frequency domain density refers to the number of REs occupied by the DMRS port on each physical resource block (Physical Resource Block, PRB for short).
  • the terminal device needs to decode the two codewords after receiving the DMRS of the first codeword and the second codeword.
  • the terminal device decodes the first codeword, and after the decoding of the first codeword is completed, the terminal device can perform decoding of the second codeword, and decode the second codeword.
  • a decoding result based on the first codeword is required. Since the DMRS ports of the two codewords occupy the same time-frequency resource in the prior art, the delay of starting decoding of the second codeword is large, resulting in a large data decoding delay.
  • the embodiment of the present application provides a data processing method, a base station, and a receiving device, which are used to effectively advance the decoding time of the second codeword and speed up the decoding speed.
  • an embodiment of the present application provides a data processing method, including:
  • the base station acquires a demodulation pilot pattern in the transmission time unit before transmitting the pilot signal, the demodulation pilot pattern including a first demodulation pilot pattern of the first codeword and a second demodulation of the second codeword a pilot pattern, where the first demodulation pilot pattern indicates a time-frequency resource of each OFDM symbol in the first set, and the second demodulation pilot pattern indicates a time-frequency resource each having an OFDM symbol in the second set;
  • the modulation code of the first codeword (English name: Modulation and Coding Scheme, MCS for short) indicates that the value is greater than the MCS indication value of the second codeword; then the base station maps the pilot signal according to the demodulation pilot pattern.
  • the base station transmits the pilot signal, wherein when the base station transmits the time-frequency resource, the sending time of the first OFDM symbol in the first set is sent in the first OFDM symbol in the second set.
  • the first OFDM symbol in the first set is the OFDM symbol with the earliest transmission time in the first set
  • the first OFDM symbol in the second set is the earliest transmission time in the second set. OFDM symbol.
  • the first demodulation pilot pattern of the first codeword is a DRMS demodulation pilot pattern of the first codeword
  • the second demodulation pilot of the second codeword is used.
  • the pattern is a demodulated pilot pattern of the DRMS of the second codeword.
  • the transmission time unit is within one subframe when the base station transmits the pilot signal.
  • the base station when the base station sends the pilot signal by using the time-frequency resource, the first OFDM symbol in the second set is sent in the first set.
  • the receiving device Before the sending moment. That is, during the transmission of the entire pilot signal, the receiving device can immediately start decoding the first codeword after receiving the time-frequency resource of the first codeword, thereby advancing the decoding time of the first codeword. And further, the decoding time of the second codeword is advanced.
  • the MCS indication value of the first codeword is greater than the MCS indication value of the second codeword, the decoding success rate of the first codeword is higher. Since the decoding of the second codeword is based on the decoding result of the first codeword, the decoding success rate of the first codeword is higher, and the decoding success rate of the second codeword can be effectively improved.
  • the first demodulation pilot pattern indicates that the number of time-frequency resource units (English element: Resource Element, RE: RE) of the first OFDM symbol in the first set is greater than the second demodulation pilot pattern. Indicates the number of REs of the first OFDM symbol in the second set.
  • the first demodulation pilot pattern of the first codeword indicates that the number of REs of each OFDM symbol in the first set is greater than the second demodulation of the corresponding second codeword.
  • the pilot pattern has a large number of REs per OFDM symbol in the second set. For example, the number of REs of the second OFDM symbol in the first set of the first demodulation pilot pattern is greater than the number of REs of the second OFDM symbol in the second set of the second demodulation pilot pattern; Pushing, the number of REs of the third OFDM symbol in the first set of the first demodulation pilot pattern is greater than the number of REs of the third OFDM symbol in the second set of the second demodulation pilot pattern, and the like .
  • the demodulation pilot pattern of the first codeword occupies more REs (ie, the frequency domain density is higher).
  • the decoding success rate of the first codeword is improved, thereby improving the decoding success rate of the second codeword.
  • the demodulation pilot pattern of the second codeword occupies less RE number, which can save time for demodulating the pilot pattern. Frequency resource overhead.
  • the first demodulation pilot pattern indicates that the number of REs of at least one OFDM symbol in the first set is smaller than the number of REs of the first OFDM symbol in the first set.
  • each OFDM symbol in the first set is sorted by the forward direction according to the time domain position, and the first demodulation pilot pattern indicates that the number of REs of each OFDM symbol in the first set may be sequentially decreased.
  • the first demodulation pilot pattern indicates that the number of REs of the second OFDM symbol in the first set is smaller than the first demodulation pilot pattern indicates The number of REs of the first OFDM symbol in the first set; if the first set includes three OFDM symbols, the first demodulation pilot pattern indicates the number of REs of the second OFDM symbol in the first set Less than the first demodulation pilot pattern indicating the number of REs of the first OFDM symbol in the first set, and then the first demodulation pilot pattern indicates the number of REs of the third OFDM symbol in the first set Less than the first demodulation pilot pattern indicates the number of REs of the second OFDM symbol in the first set.
  • the first demodulation pilot pattern indicates that the number of REs of
  • the technical solution provided by the present application can reduce the time-frequency resource overhead of the demodulation pilot pattern as much as possible while ensuring that the decoding of the first codeword is correct.
  • the RE set of at least one OFDM symbol in the first set is a true subset of the RE set of the 1st OFDM symbol in the first set; or, the RE of the OFDM symbol exists in the first set
  • the intersection of the set and the RE set of the first OFDM symbol in the first set is an empty set.
  • the REs occupied by the OFDM symbols in the first set indicated by the first demodulation pilot pattern are not empty.
  • the first demodulation pilot pattern indicates that the RE set of each OFDM symbol in the first set may be a true subset of the RE set of the first OFDM symbol in the first set or the first demodulation guide
  • the frequency pattern indicates that the intersection of the RE sets of each OFDM symbol in the first set and the RE set of the first OFDM symbol in the first set is an empty set.
  • the first demodulation pilot pattern indicates that the RE set of the second OFDM symbol in the first set is the first demodulation pilot pattern indicating the first a true subset of the RE set of the first OFDM symbol in a set; if the first set includes three OFDM symbols, the first demodulation pilot pattern indicates the second OFDM symbol in the first set.
  • the RE set indicates that the first demodulation pilot pattern indicates a true subset of the RE set of the first OFDM symbol in the first set, and then the first demodulation pilot pattern indicates a third OFDM in the first set
  • the RE set of symbols indicates that the first demodulation pilot pattern indicates a true subset of the RE set of the first OFDM symbol in the first set.
  • the first demodulation pilot pattern indicates that the RE set of the second OFDM symbol in the first set and the first demodulation pilot pattern indicate the first The intersection of the RE sets of the first OFDM symbol in a set is an empty set; if the first set includes three OFDM symbols, the first demodulation pilot pattern indicates the second OFDM in the first set The set of REs of the symbol and the first demodulation pilot pattern indicating an intersection of the RE sets of the first OFDM symbol in the first set are an empty set, and then the first demodulation pilot pattern indicates the first set of demodulation pilot patterns The intersection of the RE set of the third OFDM symbol and the RE set of the first demodulation pilot pattern indicating the first OFDM symbol in the first set is an empty set.
  • the frequency domain positions of the REs of the OFDM symbols in the first set indicated by the first demodulation pilot pattern remain consistent for the case where the channel frequency selectivity is low, and the OFDM symbols are The frequency domain positions of the REs are consistent to reduce the complexity of the channel interpolation of the receiving device; and the frequency domain positions of the REs of the OFDM symbols in the first set indicated by the first demodulation pilot pattern are differentially arranged.
  • the receiving device can ensure channel estimation in as many frequency domain locations as possible, and provide more accurate frequency domain interpolation results, thereby improving channel estimation accuracy.
  • the second demodulation pilot pattern indicates that the number of REs of the at least one OFDM symbol in the second set is smaller than the number of REs of the first OFDM symbol.
  • each OFDM symbol in the second set is sorted by the forward direction according to the time domain position, and the second demodulation pilot pattern indicates that the number of REs of each OFDM symbol in the second set may be sequentially decreased.
  • the second demodulation pilot pattern indicates that the number of REs of the second OFDM symbol in the second set is smaller than the second demodulation pilot pattern indicates The number of REs of the first OFDM symbol in the second set; if the second set includes three OFDM symbols, the second demodulation pilot pattern indicates the number of REs of the second OFDM symbol in the second set Less than the first demodulation pilot pattern indicating the number of REs of the first OFDM symbol in the second set, and then the second demodulation pilot pattern indicates that the number of REs of the third OFDM symbol in the second set is less than The second demodulation pilot pattern indicates the number of REs of the second OFDM symbol in the second set.
  • the second demodulation pilot pattern indicates that the number of REs of the second OFDM symbol in the second set.
  • the technical solution provided by the present application can reduce the time-frequency resource overhead of the demodulation pilot pattern as much as possible while ensuring that the decoding of the second codeword is correct.
  • the second demodulation pilot pattern indicates that the RE set of at least one OFDM symbol in the second set is the RE of the first OFDM symbol in the second set. a true subset of the set; or, the second demodulation pilot pattern indicates that the intersection of the RE set of at least one OFDM symbol in the second set and the RE set occupied by the first OFDM symbol in the second set is an empty set .
  • the REs of the OFDM symbols in the second set indicated by the second demodulation pilot pattern are not empty.
  • the second demodulation pilot pattern indicates that the RE set of each OFDM symbol in the second set may be a true subset of the RE set of the first OFDM symbol in the second set or the second demodulation guide
  • the frequency pattern indicates that the intersection of the RE sets of each OFDM symbol in the second set and the RE set of the first OFDM symbol in the second set is an empty set.
  • the second demodulation pilot pattern indicates that the RE set of the second OFDM symbol in the second set is the second demodulation pilot pattern indicating the first a true subset of the RE set of the first OFDM symbol in the second set; if the second set includes three OFDM symbols, the second demodulation pilot pattern indicates the second OFDM symbol in the second set.
  • the RE set indicates that the second demodulation pilot pattern indicates a true subset of the RE set of the first OFDM symbol in the second set, and then the second demodulation pilot pattern indicates the third OFDM in the second set
  • the RE set of symbols indicates that the second demodulation pilot pattern indicates a true subset of the RE set of the first OFDM symbol in the second set.
  • the second demodulation pilot pattern indicates that the RE set of the second OFDM symbol in the second set and the second demodulation pilot pattern indicate the first The intersection of the RE sets of the first OFDM symbol in the two sets is an empty set; if the second set includes three OFDM symbols, the second demodulation pilot pattern indicates the second OFDM in the second set And the second demodulation pilot pattern indicates that the intersection of the RE sets of the first OFDM symbol in the second set is an empty set, and then the second demodulation pilot pattern indicates the second set The intersection of the RE set of the third OFDM symbol and the second demodulation pilot pattern indicating the RE set of the first OFDM symbol in the second set is an empty set.
  • the frequency domain positions of the REs of the OFDM symbols in the second set indicated by the second demodulation pilot pattern are consistently applied to the case where the channel frequency selectivity is low, and the OFDM symbols are used.
  • the frequency domain positions of the REs are consistent to reduce the complexity of the channel interpolation of the receiving device; and the frequency domain positions of the REs of the OFDM symbols in the second set indicated by the second demodulation pilot pattern are differentially arranged.
  • the receiving device can ensure channel estimation in as many frequency domain positions as possible, and provide more accurate frequency domain interpolation results, thereby improving channel estimation accuracy.
  • the second demodulation pilot pattern has at least one OFDM symbol having a RE number greater than the first OFDM symbol in the second set. The number of REs.
  • each OFDM symbol in the second set is sorted by the forward direction according to the time domain position, and the second demodulation pilot pattern indicates that the number of REs of each OFDM symbol in the first set may be sequentially increased.
  • the second demodulation pilot pattern indicates that the number of REs of the second OFDM symbol in the second set is greater than the second demodulation pilot pattern indicates the first The number of REs of the first OFDM symbol in the second set; if the second set includes three OFDM symbols, the second demodulation pilot pattern indicates that the number of REs of the second OFDM symbol in the second set is greater than the number of REs
  • the second demodulation pilot pattern indicates the number of REs of the first OFDM symbol in the second set, and then the second demodulation pilot pattern indicates that the number of REs of the third OFDM symbol in the second set is greater than the number of The second demodulation pilot pattern indicates the number of REs of the second OFDM symbol in the second set.
  • the technical solution provided by the application can improve the decoding accuracy of the second codeword. For example, if the second codeword is divided into multiple code blocks for transmission, when the second codeword is retransmitted, if only one code block of the second codeword is retransmitted, and it is in the initial transmission If the code block retransmits the code block on the same or adjacent OFDM symbol, the technical solution provided by the present application can improve the decoding accuracy of the retransmitted code block.
  • the base station may further send pilot configuration information, where the pilot configuration information is used to indicate that, in the second set, each OFDM symbol in the second set is sorted from early to late according to a sending moment, where The second demodulation pilot pattern indicates an increase or decrease in the number of REs of each OFDM symbol.
  • the technical solution provided by the present application can enable the receiving device to receive the pilot signal in the correct demodulation pilot pattern.
  • the OFDM symbols in the first set are subjected to frequency domain code division multiplexing by using an orthogonal code of length 4; and the orthogonal codes of length 4 are used for performing frequency in each OFDM symbol in the second set. Domain code division multiplexing.
  • the frequency division code division multiplexing using the orthogonal code of length 4 in each OFDM symbol in the first set and the second set can effectively increase the number of users that are multiplexed. Or the number of data layers that can be transmitted simultaneously when adding a single user transmission.
  • an embodiment of the present application provides a data processing method, including:
  • the receiving device receives, by the receiving device, a demodulation pilot pattern in a transmission time unit, where the demodulation pilot pattern includes a first demodulation pilot pattern of the first codeword and a second demodulation pilot pattern of the second codeword, the first The demodulation pilot pattern indicates a time-frequency resource of each OFDM symbol in the first set, and the second demodulation pilot pattern indicates a time-frequency resource of each OFDM symbol in the second set, and the modulation coded MCS indication value of the first codeword An MCS indication value that is greater than the second codeword; the receiving device receives the pilot signal according to the demodulation pilot pattern, and the pilot signal is sent by the base station according to the demodulation pilot map on the time-frequency resource, where When the base station transmits the time-frequency resource, the transmission time of the first OFDM symbol in the first set is before the transmission time of the first OFDM symbol in the second set, and the first OFDM symbol in the first set For the OFDM symbol with the earliest transmission time in the first set, the first OFDM
  • the base station when the base station sends the pilot signal by using the time-frequency resource, the first OFDM symbol in the second set is sent in the first set.
  • the receiving device Before the sending moment. That is, during the transmission of the entire pilot signal, the receiving device can immediately start decoding the first codeword after receiving the time-frequency resource of the first codeword, thereby advancing the decoding time of the first codeword. And further, the decoding time of the second codeword is advanced.
  • the MCS indication value of the first codeword is greater than the MCS indication value of the second codeword, the decoding success rate of the first codeword is higher. Since the decoding of the second codeword is based on the decoding result of the first codeword, the decoding success rate of the first codeword is higher, and the decoding success rate of the second codeword can be effectively improved.
  • the first demodulation pilot pattern indicates that the number of time-frequency resource units (English element: Resource Element, RE: RE) of the first OFDM symbol in the first set is greater than the second demodulation pilot pattern. Indicates the number of REs of the first OFDM symbol in the second set.
  • the first demodulation pilot pattern of the first codeword indicates that the number of REs occupied on each OFDM symbol in the first set is greater than the second number of corresponding second codewords.
  • the number of REs of each OFDM symbol in the demodulated pilot pattern in the second set is large. For example, if the first set includes two OFDM symbols, the number of REs of the second OFDM symbol in the first set of the first demodulation pilot pattern is greater than the second demodulation pilot pattern in the second set.
  • the number of REs of the second OFDM symbol in turn, if the first set includes three OFDM symbols, the number of REs of the second OFDM symbol in the first set of the first demodulation pilot pattern is greater than the The number of REs of the second OFDM symbol in the second set of the second demodulation pilot pattern, and the number of REs of the third OFDM symbol in the first set of the first demodulation pilot pattern is greater than the second solution The number of REs of the third OFDM symbol in the second set of the pilot pattern, and so on.
  • the demodulation pilot pattern of the first codeword occupies more REs (ie, the frequency domain density is higher).
  • the decoding success rate of the first codeword is improved, thereby improving the decoding success rate of the second codeword.
  • the demodulation pilot pattern of the second codeword occupies less RE number, which can save time for demodulating the pilot pattern. Frequency resource overhead.
  • the first demodulation pilot pattern indicates that the number of REs of at least one OFDM symbol in the first set is smaller than the number of REs of the first OFDM symbol in the first set.
  • each OFDM symbol in the first set is sorted by the forward direction according to the time domain position, and the first demodulation pilot pattern indicates that the number of REs of each OFDM symbol in the first set may be sequentially decreased.
  • the first demodulation pilot pattern indicates that the number of REs of the second OFDM symbol in the first set is smaller than the first demodulation pilot pattern indicating the first The number of REs of the first OFDM symbol in the set; if the first set includes three OFDM symbols, the first demodulation pilot pattern indicates that the number of REs of the second OFDM symbol in the first set is smaller than the first Demodulating the pilot pattern indicating the number of REs of the first OFDM symbol in the first set, and then the first demodulation pilot pattern indicates that the number of REs of the third OFDM symbol in the first set is smaller than the first The demodulation pilot pattern indicates the number of REs of the second OFDM symbol in the first set.
  • the first demodulation pilot pattern indicates that
  • the technical solution provided by the present application can reduce the time-frequency resource overhead of the demodulation pilot pattern as much as possible while ensuring that the decoding of the first codeword is correct.
  • the RE set of at least one OFDM symbol in the first set is a true subset of the RE set of the 1st OFDM symbol in the first set; or, the RE of the OFDM symbol exists in the first set
  • the intersection of the set and the RE set of the first OFDM symbol in the first set is an empty set.
  • the REs occupied by the OFDM symbols in the first set indicated by the first demodulation pilot pattern are not empty.
  • the first demodulation pilot pattern indicates that the RE set of each OFDM symbol in the first set may be a true subset of the RE set of the first OFDM symbol in the first set or the first demodulation guide
  • the frequency pattern indicates that the intersection of the RE sets of each OFDM symbol in the first set and the RE set of the first OFDM symbol in the first set is an empty set.
  • the first demodulation pilot pattern indicates that the RE set of the second OFDM symbol in the first set is the first demodulation pilot pattern indicating the first a true subset of the RE set of the first OFDM symbol in a set; if the first set includes three OFDM symbols, the first demodulation pilot pattern indicates the second OFDM symbol in the first set.
  • the RE set indicates that the first demodulation pilot pattern indicates a true subset of the RE set of the first OFDM symbol in the first set, and then the first demodulation pilot pattern indicates a third OFDM in the first set
  • the RE set of symbols indicates that the first demodulation pilot pattern indicates a true subset of the RE set of the first OFDM symbol in the first set.
  • the first demodulation pilot pattern indicates that the RE set of the second OFDM symbol in the first set and the first demodulation pilot pattern indicate the first The intersection of the RE sets of the first OFDM symbol in a set is an empty set; if the first set includes three OFDM symbols, the first demodulation pilot pattern indicates the second OFDM in the first set The set of REs of the symbol and the first demodulation pilot pattern indicating an intersection of the RE sets of the first OFDM symbol in the first set are an empty set, and then the first demodulation pilot pattern indicates the first set of demodulation pilot patterns The intersection of the RE set of the third OFDM symbol and the RE set of the first demodulation pilot pattern indicating the first OFDM symbol in the first set is an empty set.
  • the frequency domain positions of the REs of the OFDM symbols in the first set indicated by the first demodulation pilot pattern remain consistent for the case where the channel frequency selectivity is low, and the OFDM symbols are The frequency domain positions of the REs are consistent to reduce the complexity of the channel interpolation of the receiving device; and the frequency domain positions of the REs of the OFDM symbols in the first set indicated by the first demodulation pilot pattern are differentially arranged.
  • the receiving device can ensure channel estimation in as many frequency domain locations as possible, and provide more accurate frequency domain interpolation results, thereby improving channel estimation accuracy.
  • the second demodulation pilot pattern indicates that the number of REs of the at least one OFDM symbol in the second set is smaller than the number of REs of the first OFDM symbol.
  • each OFDM symbol in the second set is sorted by the forward direction according to the time domain position, and the second demodulation pilot pattern indicates that the number of REs of each OFDM symbol in the second set may be sequentially decreased.
  • the second demodulation pilot pattern indicates that the number of REs of the second OFDM symbol in the second set is smaller than the second demodulation pilot pattern indicates The number of REs of the first OFDM symbol in the second set; if the second set includes three OFDM symbols, the second demodulation pilot pattern indicates the number of REs of the second OFDM symbol in the second set Less than the first demodulation pilot pattern indicating the number of REs of the first OFDM symbol in the second set, and then the second demodulation pilot pattern indicates that the number of REs of the third OFDM symbol in the second set is less than The second demodulation pilot pattern indicates the number of REs of the second OFDM symbol in the second set.
  • the second demodulation pilot pattern indicates that the number of REs of the second OFDM symbol in the second set.
  • the technical solution provided by the present application can reduce the time-frequency resource overhead of the demodulation pilot pattern as much as possible while ensuring that the decoding of the second codeword is correct.
  • the second demodulation pilot pattern indicates that the RE set of at least one OFDM symbol in the second set is the RE of the first OFDM symbol in the second set. a true subset of the set; or, the second demodulation pilot pattern indicates that the intersection of the RE set of at least one OFDM symbol in the second set and the RE set occupied by the first OFDM symbol in the second set is an empty set .
  • the REs of the OFDM symbols in the second set indicated by the second demodulation pilot pattern are not empty.
  • the second demodulation pilot pattern indicates that the RE set of each OFDM symbol in the second set may be a true subset of the RE set of the first OFDM symbol in the second set or the second demodulation guide
  • the frequency pattern indicates that the intersection of the RE sets of each OFDM symbol in the second set and the RE set of the first OFDM symbol in the second set is an empty set.
  • the second demodulation pilot pattern indicates that the RE set of the second OFDM symbol in the second set is the second demodulation pilot pattern indicating the first a true subset of the RE set of the first OFDM symbol in the second set; if the second set includes three OFDM symbols, the second demodulation pilot pattern indicates the second OFDM symbol in the second set.
  • the RE set indicates that the second demodulation pilot pattern indicates a true subset of the RE set of the first OFDM symbol in the second set, and then the second demodulation pilot pattern indicates the third OFDM in the second set
  • the RE set of symbols indicates that the second demodulation pilot pattern indicates a true subset of the RE set of the first OFDM symbol in the second set.
  • the second demodulation pilot pattern indicates that the RE set of the second OFDM symbol in the second set and the second demodulation pilot pattern indicate the first The intersection of the RE sets of the first OFDM symbol in the two sets is an empty set; if the second set includes three OFDM symbols, the second demodulation pilot pattern indicates the second OFDM in the second set And the second demodulation pilot pattern indicates that the intersection of the RE sets of the first OFDM symbol in the second set is an empty set, and then the second demodulation pilot pattern indicates the second set The intersection of the RE set of the third OFDM symbol and the second demodulation pilot pattern indicating the RE set of the first OFDM symbol in the second set is an empty set.
  • the frequency domain positions of the REs of the OFDM symbols in the second set indicated by the second demodulation pilot pattern are consistently applied to the case where the channel frequency selectivity is low, and the OFDM symbols are used.
  • the frequency domain positions of the REs are consistent to reduce the complexity of the channel interpolation of the receiving device; and the frequency domain positions of the REs of the OFDM symbols in the second set indicated by the second demodulation pilot pattern are differentially arranged.
  • the receiving device can ensure channel estimation in as many frequency domain positions as possible, and provide more accurate frequency domain interpolation results, thereby improving channel estimation accuracy.
  • the second demodulation pilot pattern has at least one OFDM symbol having a RE number greater than the first OFDM symbol in the second set. The number of REs.
  • each OFDM symbol in the second set is sorted by the forward direction according to the time domain position, and the second demodulation pilot pattern indicates that the number of REs of each OFDM symbol in the first set may be sequentially increased.
  • the second demodulation pilot pattern indicates that the number of REs of the second OFDM symbol in the second set is greater than the second demodulation pilot pattern indicates the first The number of REs of the first OFDM symbol in the second set; if the second set includes three OFDM symbols, the second demodulation pilot pattern indicates that the number of REs of the second OFDM symbol in the second set is greater than the number of REs
  • the second demodulation pilot pattern indicates the number of REs of the first OFDM symbol in the second set, and then the second demodulation pilot pattern indicates that the number of REs of the third OFDM symbol in the second set is greater than the number of The second demodulation pilot pattern indicates the number of REs of the second OFDM symbol in the second set.
  • the technical solution provided by the application can improve the decoding accuracy of the second codeword. For example, if the second codeword is divided into multiple code blocks for transmission, when the second codeword is retransmitted, if only one code block of the second codeword is retransmitted, and it is in the initial transmission If the code block retransmits the code block on the same or adjacent OFDM symbol, the technical solution provided by the present application can improve the decoding accuracy of the retransmitted code block.
  • the receiving device may further receive pilot configuration information that is sent by the base station, where the OFDM symbols in the second set are sorted from early to late according to the sending time in the second set.
  • the second demodulation pilot pattern indicates an increase or decrease in the number of REs of each OFDM symbol.
  • the technical solution provided by the application provides that the receiving device can receive the pilot signal in the correct demodulation pilot pattern.
  • the OFDM symbols in the first set are subjected to frequency domain code division multiplexing by using an orthogonal code of length 4; and the orthogonal codes of length 4 are used for performing frequency in each OFDM symbol in the second set. Domain code division multiplexing.
  • the frequency division code division multiplexing using the orthogonal code of length 4 in each OFDM symbol in the first set and the second set can effectively increase the number of users that are multiplexed. Or the number of data layers that can be transmitted simultaneously when adding a single user transmission.
  • the present application provides a base station having a function of implementing a base station in the foregoing method.
  • This function can be implemented in hardware or in hardware by executing the corresponding software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the base station includes:
  • a processing unit configured to acquire a demodulation pilot pattern in a transmission time unit, where the demodulation pilot pattern includes a first demodulation pilot pattern of the first codeword and a second demodulation pilot pattern of the second codeword,
  • the first demodulation pilot pattern indicates a time-frequency resource of each orthogonal frequency division multiplexing OFDM symbol in the first set
  • the second demodulation pilot pattern indicates a time-frequency resource of each OFDM symbol in the second set, where
  • the modulation coded MCS indication value of the first codeword is greater than the MCS indication value of the second codeword
  • a sending module configured to map the pilot signal to the time-frequency resource according to the demodulation pilot pattern, and send the pilot signal, where the sending moment of the first OFDM symbol in the first set is in the second set Before the transmission time of the first OFDM symbol, the first OFDM symbol in the first set is the OFDM symbol with the earliest transmission time in the first set, and the first OFDM symbol in the second set is the The earliest OFDM symbol at the transmission time in the second set.
  • the base station includes:
  • Transceiver processor and bus
  • the transceiver is coupled to the processor via the bus;
  • the processor performs the following steps:
  • the demodulation pilot pattern includes a first demodulation pilot pattern of a first codeword and a second demodulation pilot pattern of a second codeword
  • the first demodulation The pilot pattern indicates a time-frequency resource of each orthogonal frequency division multiplexing OFDM symbol in the first set
  • the second demodulation pilot pattern indicates a time-frequency resource of each OFDM symbol in the second set, where the first codeword
  • the modulation coded MCS indication value is greater than the MCS indication value of the second codeword
  • the transceiver performs the following steps:
  • the transmission time of the first OFDM symbol in the first set is the first one in the second set
  • the first OFDM symbol in the first set is the OFDM symbol with the earliest transmission time in the first set
  • the first OFDM symbol in the second set is in the second set. The earliest OFDM symbol is transmitted.
  • the present application provides a receiving device having a function of implementing a receiving device in the above method.
  • This function can be implemented in hardware or in hardware by executing the corresponding software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the receiving device includes:
  • a processing module configured to acquire a demodulation pilot pattern in a transmission time unit, where the demodulation pilot pattern includes a first demodulation pilot pattern of a first codeword and a second demodulation pilot pattern of a second codeword,
  • the first demodulation pilot pattern indicates a time-frequency resource of each orthogonal frequency division multiplexing OFDM symbol in the first set
  • the second demodulation pilot pattern indicates a time-frequency resource of each OFDM symbol in the second set
  • the modulation coded MCS indication value of the first codeword is greater than the MCS indication value of the second codeword
  • a receiving module configured to receive a pilot signal according to the demodulation pilot pattern, where the pilot signal is sent by the base station according to the demodulation pilot map on a time-frequency resource, where the first set is The transmission time of the first OFDM symbol is before the transmission time of the first OFDM symbol in the second set, and the first OFDM symbol in the first set is the earliest transmission time in the first set OFDM symbol.
  • the receiving device includes:
  • Transceiver processor and bus
  • the transceiver is coupled to the processor via the bus;
  • the processor performs the following steps:
  • the demodulation pilot pattern includes a first demodulation pilot pattern of a first codeword and a second demodulation pilot pattern of a second codeword
  • the first solution The tone modulation pattern indicates a time-frequency resource of each orthogonal frequency division multiplexing OFDM symbol in the first set
  • the second demodulation pilot pattern indicates a time-frequency resource of each OFDM symbol in the second set, the first code
  • the modulation coding MCS indication value of the word is greater than the MCS indication value of the second codeword
  • the transceiver performs the following steps:
  • the application provides a data processing method, including:
  • the base station Before transmitting the pilot signal, the base station determines a rank indication (English name: Rank Indication, RI for short) and pilot configuration information, and determines, according to the pilot configuration information, a transmission from the set of demodulation pilot patterns corresponding to the RI.
  • a rank indication English name: Rank Indication, RI for short
  • pilot configuration information determines, according to the pilot configuration information, a transmission from the set of demodulation pilot patterns corresponding to the RI.
  • the demodulation pilot pattern set includes at least two demodulation pilot patterns, each demodulation pilot pattern in the demodulation pilot pattern set each indicating an orthogonal Frequency-division multiplexing time-frequency resources of each OFDM symbol in the OFDM symbol set, and the number of time-frequency resource units RE of each OFDM symbol indicated by each demodulation pilot pattern in the demodulation pilot pattern set is different and the demodulation
  • Each of the demodulation pilot patterns in the pilot pattern set adopts an orthogonal code pattern, and the orthogonal code pattern includes a frequency domain one-dimensional spreading pattern and a time-frequency two-dimensional spreading pattern, and the at least two demodulation pilots
  • the pattern is a demodulation pilot pattern in the same seed frame type; then the base station maps the pilot signal on the time-frequency resource according to the target pilot pattern, and transmits the pilot signal, the pilot configuration information, and the RI.
  • the base station when acquiring the target demodulation pilot pattern, may first acquire a demodulation pilot pattern set corresponding to the pilot configuration information, and then perform demodulation corresponding to the pilot configuration information according to the RI.
  • the target demodulation pilot pattern is determined in the pilot pattern set. In the actual application, the specific manner is adopted, which is not limited herein.
  • the frequency domain one-dimensional spreading pattern refers to a pattern in which an orthogonal code is spread in a frequency domain within one OFDM symbol.
  • an orthogonal code of length N the frequency domain shift spread pattern refers to code division multiplexing of orthogonal codes on consecutive or discontinuous N REs within the same OFDM symbol.
  • N is a positive integer, such as 2, 4, 8.
  • the time-frequency two-dimensional spreading pattern refers to a pattern in which orthogonal codes are spread over more than one OFDM symbol, including time domain spreading and frequency domain spreading.
  • an orthogonal code of length N is spread over 2 OFDM symbols, wherein frequency domain spreading is performed on 4 consecutive or discontinuous REs on each OFDM symbol, on 2 OFDM symbols Time domain spread spectrum.
  • each demodulation pilot pattern included in the demodulation pilot pattern set corresponding to the RI adopts a frequency domain one-dimensional spreading pattern and a positive-frequency code pattern of a time-frequency two-dimensional spreading pattern, and Effectively increase the spread spectrum gain to improve data detection performance.
  • the number of REs occupied by each demodulation pilot pattern in the demodulation pilot pattern set corresponding to the RI is different, and the channel estimation performance can be ensured when the number of multiplexed users is increased.
  • the OFDM symbol set indicated by the target demodulation pilot pattern includes N sets of OFDM symbols, where the N sets of OFDM symbols are in the order of the transmission time from the early to the late, the target demodulation pilot pattern indicates At least one OFDM symbol RE number in the OFDM symbol set is smaller than a number of REs of the first group OFDM symbol in the OFDM symbol set indicated by the target demodulation pilot pattern, where the target demodulation pilot pattern indicates an OFDM symbol set
  • Each set of OFDM symbols includes at least one OFDM symbol, which is a positive integer.
  • each group of OFDM symbols in the OFDM symbol set is sorted by the time domain position, and the target demodulation pilot pattern indicates that the number of REs of each group of OFDM symbols in the OFDM symbol set may be sequentially Decreasing, for example, if the OFDM symbol set includes two sets of OFDM symbols, the number of REs of the second group of OFDM symbols in the OFDM symbol set indicated by the target demodulation pilot pattern is smaller than indicated by the target demodulation pilot pattern The number of REs of the first group of OFDM symbols in the OFDM symbol set; if the OFDM symbol set includes three sets of OFDM symbols, the RE of the second set of OFDM symbols in the OFDM symbol set indicated by the target demodulation pilot pattern The number is less than the number of REs of the first group of OFDM symbols in the OFDM symbol set indicated by the target demodulation pilot pattern, and then the number of REs of the third group of OFDM symbols in the OFDM symbol set indicated by the target demodulation pilot pattern Less than the number of REs of the second set
  • the number of REs of each group of OFDM symbols in the OFDM symbol set indicated by the target demodulation pilot pattern may be only the number of REs of the first group of OFDM symbols in the OFDM symbol set indicated by the target demodulation pilot pattern. Small enough.
  • the specific setting method is not limited here.
  • the time-frequency resource overhead of the target demodulation pilot pattern can be reduced as much as possible while ensuring correct decoding.
  • the RE set of the OFDM symbol indicated by the target demodulation pilot pattern has at least one set of REs of the OFDM symbol and the RE of the first set of OFDM symbols in the OFDM symbol set indicated by the target demodulation pilot pattern.
  • the intersection of the set is an empty set; or, the set of REs in which at least one set of OFDM symbols in the set of OFDM symbols indicated by the target demodulation pilot pattern is the first of the set of OFDM symbols indicated by the target demodulation pilot pattern A true subset of the set of REs of a group of OFDM symbols.
  • the REs of each group of OFDM symbols in the OFDM symbol set indicated by the target demodulation pilot pattern are not empty.
  • the RE set of each group of OFDM symbols in the OFDM symbol set indicated by the target demodulation pilot pattern may be the RE set of the first group of OFDM symbols in the OFDM symbol set indicated by the target demodulation pilot pattern.
  • the true subset or the set of REs of each group of OFDM symbols in the set of OFDM symbols indicated by the target demodulation pilot pattern may both be the same as the first group of OFDM symbols in the set of OFDM symbols indicated by the target demodulation pilot pattern
  • the intersection of the RE sets is an empty set.
  • the RE set of the second set of OFDM symbols in the OFDM symbol set indicated by the target demodulation pilot pattern is the OFDM indicated by the target demodulation pilot pattern.
  • a true subset of the set of REs of the first set of OFDM symbols in the set of symbols if the set of OFDM symbols includes three sets of OFDM symbols, the second set of OFDM symbols in the set of OFDM symbols indicated by the target demodulation pilot pattern.
  • the RE set is a true subset of the RE sets of the first set of OFDM symbols in the set of OFDM symbols indicated by the target demodulation pilot pattern, and then the third set of OFDM in the set of OFDM symbols indicated by the target demodulation pilot pattern
  • the set of REs of the symbol is a true subset of the set of REs of the first set of OFDM symbols in the set of OFDM symbols indicated by the target demodulation pilot pattern.
  • the OFDM symbol set includes two sets of OFDM symbols
  • the RE set of the second set of OFDM symbols in the OFDM symbol set indicated by the target demodulation pilot pattern and the OFDM indicated by the target demodulation pilot pattern The intersection of the RE sets of the first set of OFDM symbols in the set of symbols is an empty set; if the set of OFDM symbols includes three sets of OFDM symbols, the second set of OFDM in the set of OFDM symbols indicated by the target demodulation pilot pattern
  • An intersection of the set of REs of the symbol and the set of REs of the first set of OFDM symbols in the set of OFDM symbols indicated by the target demodulation pilot pattern is an empty set, and then the target demodulation pilot pattern indicates the set of OFDM symbols
  • the intersection of the RE set of the third set of OFDM symbols and the RE set of the first set of OFDM symbols in the set of OFDM symbols indicated by the target demodulation pilot pattern is an empty set.
  • the frequency domain positions of the REs of the OFDM symbols indicated by the target demodulation pilot pattern are consistently applied to the case where the channel frequency selectivity is low, and the frequency domain positions of the REs of the OFDM symbols are consistent.
  • the complexity of the channel interpolation of the receiving device can be reduced; and the frequency domain position of the RE of each OFDM symbol indicated by the target demodulation pilot pattern is differentially arranged for the case where the channel frequency selectivity is high, and Ensure that the receiving device performs channel estimation in as many frequency domain locations as possible, providing more accurate frequency domain interpolation results, thereby improving the accuracy of channel estimation.
  • the RI is different, and the pilot patterns in the set of demodulation pilot patterns have different situations, and the specific circumstances include, but are not limited to, the following possible implementation manners:
  • the orthogonal code pattern of the demodulation pilot pattern in the demodulation pilot pattern set includes using orthogonal codes of length 2 in each group of OFDM symbols.
  • Frequency domain code division multiplexing each group of OFDM symbols includes one OFDM symbol; and each group of OFDM symbols is subjected to frequency domain code division multiplexing using an orthogonal code of length 4, and each group of OFDM symbols includes one OFDM symbol;
  • Frequency division and time domain code division multiplexing are performed in each group of OFDM symbols by using an orthogonal code of length 8, wherein the frequency domain code division multiplexing length is 4, and the time domain code division multiplexing length is 2, each group The OFDM symbol includes two consecutive OFDM symbols in the time domain.
  • the orthogonal code pattern of the demodulation pilot pattern in the demodulation pilot pattern set includes an orthogonal code of length 4 in each group of OFDM symbols.
  • each group of OFDM symbols includes one OFDM symbol; and each group of OFDM symbols uses a lengthwise 8 orthogonal code for frequency domain and time domain code division multiplexing, wherein the frequency domain code division The multiplexing length is 4, and the time domain code division multiplexing length is 2, and each group of OFDM symbols includes 2 consecutive OFDM symbols in the time domain.
  • the orthogonal code pattern of the demodulation pilot pattern in the demodulation pilot pattern set includes the use in each group of OFDM symbols.
  • the orthogonal code of length 8 performs frequency division and time domain code division multiplexing, wherein the frequency domain code division multiplexing length is 4, the time domain code division multiplexing length is 2, and each group of OFDM symbols includes time domain. 2 consecutive OFDM symbols; and, the first OFDM symbol in each group of OFDM symbols is frequency-domain code division multiplexed using a length 4 orthogonal code, and the length 4 orthogonal code is used on the second OFDM symbol.
  • Domain code division multiplexing each set of OFDM symbols includes two consecutive OFDM symbols in the time domain.
  • different at least two demodulation pilot patterns corresponding to the RI can effectively increase the spreading gain, thereby improving data detection performance.
  • each demodulation pilot pattern in the demodulation pilot pattern set corresponding to the RI has a different number of REs occupied, and the channel estimation performance can be ensured when the number of multiplexed users is increased.
  • the application provides a data processing method, including:
  • the demodulation pilot pattern includes at least two demodulation pilot patterns, each demodulation pilot pattern in the demodulation pilot pattern set each indicating a time-frequency resource of each OFDM symbol in an orthogonal frequency division multiplexing OFDM symbol set, and The number of time-frequency resource units RE of each OFDM symbol indicated by each demodulation pilot pattern in the demodulation pilot pattern set is different, and orthogonal codes used by each demodulation pilot pattern in the demodulation pilot pattern set are used.
  • the orthogonal code pattern includes a frequency domain one-dimensional spreading pattern and a time-frequency two-dimensional spreading pattern, and the at least two demodulation pilot patterns are demodulation pilot patterns in the same seed frame type; the receiving device The pilot signal is received according to the target demodulation pilot pattern, and the pilot signal is transmitted by the base station according to the target demodulation pilot pattern mapped on the time-frequency resource.
  • the frequency domain one-dimensional spreading pattern refers to a pattern in which an orthogonal code is spread in a frequency domain within one OFDM symbol.
  • an orthogonal code of length N the frequency domain shift spread pattern refers to code division multiplexing of orthogonal codes on consecutive or discontinuous N REs within the same OFDM symbol.
  • N is a positive integer, such as 2, 4, 8.
  • the time-frequency two-dimensional spreading pattern refers to a pattern in which orthogonal codes are spread over more than one OFDM symbol, including time domain spreading and frequency domain spreading.
  • an orthogonal code of length N is spread over 2 OFDM symbols, wherein frequency domain spreading is performed on 4 consecutive or discontinuous REs on each OFDM symbol, on 2 OFDM symbols Time domain spread spectrum.
  • each demodulation pilot pattern included in the demodulation pilot pattern set corresponding to the RI adopts a frequency domain one-dimensional spreading pattern and a positive-frequency code pattern of a time-frequency two-dimensional spreading pattern, and Effectively increase the spread spectrum gain to improve data detection performance.
  • the number of REs occupied by each demodulation pilot pattern in the demodulation pilot pattern set corresponding to the RI is different, and the channel estimation performance can be ensured when the number of multiplexed users is increased.
  • the OFDM symbol set indicated by the target demodulation pilot pattern includes N sets of OFDM symbols, where the N sets of OFDM symbols are in the order of the transmission time from the early to the late, the target demodulation pilot pattern indicates At least one OFDM symbol RE number in the OFDM symbol set is smaller than a number of REs of the first group OFDM symbol in the OFDM symbol set indicated by the target demodulation pilot pattern, where the target demodulation pilot pattern indicates an OFDM symbol set
  • Each set of OFDM symbols includes at least one OFDM symbol, which is a positive integer.
  • each group of OFDM symbols in the OFDM symbol set is sorted by the time domain position, and the target demodulation pilot pattern indicates that the number of REs of each group of OFDM symbols in the OFDM symbol set may be sequentially Decreasing, for example, if the OFDM symbol set includes two sets of OFDM symbols, the number of REs of the second group of OFDM symbols in the OFDM symbol set indicated by the target demodulation pilot pattern is smaller than indicated by the target demodulation pilot pattern The number of REs of the first group of OFDM symbols in the OFDM symbol set; if the OFDM symbol set includes three sets of OFDM symbols, the RE of the second set of OFDM symbols in the OFDM symbol set indicated by the target demodulation pilot pattern The number is less than the number of REs of the first group of OFDM symbols in the OFDM symbol set indicated by the target demodulation pilot pattern, and then the number of REs of the third group of OFDM symbols in the OFDM symbol set indicated by the target demodulation pilot pattern Less than the number of REs of the second set
  • the number of REs of each group of OFDM symbols in the OFDM symbol set indicated by the target demodulation pilot pattern may be only the number of REs of the first group of OFDM symbols in the OFDM symbol set indicated by the target demodulation pilot pattern. Small enough.
  • the specific setting method is not limited here.
  • the time-frequency resource overhead of the target demodulation pilot pattern can be reduced as much as possible while ensuring correct decoding.
  • the RE set of the OFDM symbol indicated by the target demodulation pilot pattern has at least one set of REs of the OFDM symbol and the RE of the first set of OFDM symbols in the OFDM symbol set indicated by the target demodulation pilot pattern.
  • the intersection of the set is an empty set; or, the set of REs in which at least one set of OFDM symbols in the set of OFDM symbols indicated by the target demodulation pilot pattern is the first one of the set of OFDM symbols indicated by the target demodulation pilot pattern A true subset of the set of REs of a group of OFDM symbols.
  • the REs of each group of OFDM symbols in the OFDM symbol set indicated by the target demodulation pilot pattern are not empty.
  • the RE set of each group of OFDM symbols in the OFDM symbol set indicated by the target demodulation pilot pattern may be the RE set of the first group of OFDM symbols in the OFDM symbol set indicated by the target demodulation pilot pattern.
  • the true subset or the set of REs of each group of OFDM symbols in the set of OFDM symbols indicated by the target demodulation pilot pattern may both be the same as the first group of OFDM symbols in the set of OFDM symbols indicated by the target demodulation pilot pattern
  • the intersection of the RE sets is an empty set.
  • the RE set of the second set of OFDM symbols in the OFDM symbol set indicated by the target demodulation pilot pattern is the OFDM indicated by the target demodulation pilot pattern.
  • a true subset of the set of REs of the first set of OFDM symbols in the set of symbols if the set of OFDM symbols includes three sets of OFDM symbols, the second set of OFDM symbols in the set of OFDM symbols indicated by the target demodulation pilot pattern.
  • the RE set is a true subset of the RE sets of the first set of OFDM symbols in the set of OFDM symbols indicated by the target demodulation pilot pattern, and then the third set of OFDM in the set of OFDM symbols indicated by the target demodulation pilot pattern
  • the set of REs of the symbol is a true subset of the set of REs of the first set of OFDM symbols in the set of OFDM symbols indicated by the target demodulation pilot pattern.
  • the OFDM symbol set includes two sets of OFDM symbols
  • the RE set of the second set of OFDM symbols in the OFDM symbol set indicated by the target demodulation pilot pattern and the OFDM indicated by the target demodulation pilot pattern The intersection of the RE sets of the first set of OFDM symbols in the set of symbols is an empty set; if the set of OFDM symbols includes three sets of OFDM symbols, the second set of OFDM in the set of OFDM symbols indicated by the target demodulation pilot pattern
  • An intersection of the set of REs of the symbol and the set of REs of the first set of OFDM symbols in the set of OFDM symbols indicated by the target demodulation pilot pattern is an empty set, and then the target demodulation pilot pattern indicates the set of OFDM symbols
  • the intersection of the RE set of the third set of OFDM symbols and the RE set of the first set of OFDM symbols in the set of OFDM symbols indicated by the target demodulation pilot pattern is an empty set.
  • the frequency domain positions of the REs of the OFDM symbols indicated by the target demodulation pilot pattern are consistently applied to the case where the channel frequency selectivity is low, and the frequency domain positions of the REs of the OFDM symbols are consistent.
  • the complexity of the channel interpolation of the receiving device can be reduced; and the frequency domain position of the RE of each OFDM symbol indicated by the target demodulation pilot pattern is differentially arranged for the case where the channel frequency selectivity is high, and Ensure that the receiving device performs channel estimation in as many frequency domain locations as possible, providing more accurate frequency domain interpolation results, thereby improving the accuracy of channel estimation.
  • the RI is different, and the pilot patterns in the set of demodulation pilot patterns have different situations, and the specific circumstances include, but are not limited to, the following possible implementation manners:
  • the orthogonal code pattern of the demodulation pilot pattern in the demodulation pilot pattern set includes using orthogonal codes of length 2 in each group of OFDM symbols.
  • Frequency domain code division multiplexing each group of OFDM symbols includes one OFDM symbol; and each group of OFDM symbols is subjected to frequency domain code division multiplexing using an orthogonal code of length 4, and each group of OFDM symbols includes one OFDM symbol;
  • Frequency division and time domain code division multiplexing are performed in each group of OFDM symbols by using an orthogonal code of length 8, wherein the frequency domain code division multiplexing length is 4, and the time domain code division multiplexing length is 2, each group The OFDM symbol includes two consecutive OFDM symbols in the time domain.
  • the orthogonal code pattern of the demodulation pilot pattern in the demodulation pilot pattern set includes an orthogonal code of length 4 in each group of OFDM symbols.
  • each group of OFDM symbols includes one OFDM symbol; and each group of OFDM symbols uses a lengthwise 8 orthogonal code for frequency domain and time domain code division multiplexing, wherein the frequency domain code division The multiplexing length is 4, and the time domain code division multiplexing length is 2, and each group of OFDM symbols includes 2 consecutive OFDM symbols in the time domain.
  • the orthogonal code pattern of the demodulation pilot pattern in the demodulation pilot pattern set includes the use in each group of OFDM symbols.
  • the orthogonal code of length 8 performs frequency division and time domain code division multiplexing, wherein the frequency domain code division multiplexing length is 4, the time domain code division multiplexing length is 2, and each group of OFDM symbols includes time domain. 2 consecutive OFDM symbols; and, the first OFDM symbol in each group of OFDM symbols is frequency-domain code division multiplexed using a length 4 orthogonal code, and the length 4 orthogonal code is used on the second OFDM symbol.
  • Domain code division multiplexing each set of OFDM symbols includes two consecutive OFDM symbols in the time domain.
  • different at least two demodulation pilot patterns corresponding to the RI can effectively increase the spreading gain, thereby improving data detection performance.
  • each demodulation pilot pattern in the demodulation pilot pattern set corresponding to the RI has a different number of REs occupied, and the channel estimation performance can be ensured when the number of multiplexed users is increased.
  • the application provides a base station, which has the function of implementing a base station in the foregoing method.
  • This function can be implemented in hardware or in hardware by executing the corresponding software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the base station includes:
  • a processing module configured to determine a rank indication RI and pilot configuration information, and determine, according to the pilot configuration information, a target demodulation pilot pattern in a transmission time unit from the set of demodulation pilot patterns corresponding to the RI, where the demodulation
  • the pilot pattern set includes at least two demodulation pilot patterns, each demodulation pilot pattern in the demodulation pilot pattern set each indicating a time frequency of each OFDM symbol in an orthogonal frequency division multiplexing OFDM symbol set a resource, and the number of time-frequency resource units RE of each OFDM symbol indicated by each demodulation pilot pattern in the demodulation pilot pattern set is different and each demodulation pilot pattern in the demodulation pilot pattern set is used
  • the orthogonal code pattern includes a frequency domain one-dimensional spreading pattern and a time-frequency two-dimensional spreading pattern, and the at least two demodulation pilot patterns are demodulation pilot patterns in the same seed frame type;
  • a sending module configured to map the pilot signal to the time-frequency resource according to the target pilot pattern, and send the pilot signal, the pilot configuration information, and the RI.
  • the base station includes:
  • Transceiver processor and bus
  • the transceiver is coupled to the processor via the bus;
  • the processor performs the following steps: determining a rank indication RI and pilot configuration information, and determining, according to the pilot configuration information, a target demodulation pilot pattern in a transmission time unit from the demodulation pilot pattern set corresponding to the RI,
  • the demodulation pilot pattern set includes at least two demodulation pilot patterns, each demodulation pilot pattern in the demodulation pilot pattern set each indicating an OFDM symbol in one orthogonal frequency division multiplexing OFDM symbol set Time-frequency resources, and the number of time-frequency resource units RE of each OFDM symbol indicated by each demodulation pilot pattern in the demodulation pilot pattern set is different and each demodulation pilot in the demodulation pilot pattern set
  • the pattern adopts different orthogonal code patterns, and the orthogonal code pattern includes a frequency domain one-dimensional spreading pattern and a time-frequency two-dimensional spreading pattern, and the at least two demodulation pilot patterns are demodulation guides under the same seed frame type.
  • the transceiver performs the following steps:
  • the pilot signal is mapped to the time-frequency resource according to the target pilot pattern, and the pilot signal, the pilot configuration information, and the RI are transmitted.
  • the present application provides a receiving device having a function of implementing a receiving device in the above method.
  • This function can be implemented in hardware or in hardware by executing the corresponding software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the receiving device includes:
  • a processing module configured to obtain a target demodulation pilot pattern in a transmission time unit, where the target demodulation pilot pattern is determined by the base station according to the pilot configuration information from a demodulation pilot pattern set corresponding to the rank indication RI, where the demodulation is performed.
  • the pilot pattern set includes at least two demodulation pilot patterns, each demodulation pilot pattern in the demodulation pilot pattern set each indicating a time frequency of each OFDM symbol in an orthogonal frequency division multiplexing OFDM symbol set a resource, and the number of time-frequency resource units RE of each OFDM symbol indicated by each demodulation pilot pattern in the demodulation pilot pattern set is different and each demodulation pilot pattern in the demodulation pilot pattern set is used
  • the orthogonal code pattern includes a frequency domain one-dimensional spreading pattern and a time-frequency two-dimensional spreading pattern, and the at least two demodulation pilot patterns are demodulation pilot patterns in the same seed frame type;
  • a receiving module configured to receive a pilot signal according to the target demodulation pilot pattern, where the pilot signal is transmitted by the base station according to the target demodulation pilot pattern mapped on the time-frequency resource.
  • the receiving device includes:
  • Transceiver processor and bus
  • the transceiver is coupled to the processor via the bus;
  • the processor performs the following steps:
  • the target demodulation pilot pattern is determined by the base station from the demodulation pilot pattern set corresponding to the rank indication RI according to the pilot configuration information, where the demodulation pilot pattern set is used
  • the demodulation pilot pattern set is used
  • the number of time-frequency resource units RE of each OFDM symbol indicated by each demodulation pilot pattern in the modulated pilot pattern set is different, and each orthogonal demodulation pilot pattern in the demodulation pilot pattern set adopts a different orthogonal code pattern
  • the orthogonal code pattern includes a frequency domain one-dimensional spreading pattern and a time-frequency two-dimensional spreading pattern, and the at least two demodulation pilot patterns are demodulation pilot patterns in the same seed frame type;
  • the transceiver performs the following steps:
  • the pilot signal is received according to the target demodulation pilot pattern, and the pilot signal is transmitted by the base station according to the target demodulation pilot pattern mapped on the time-frequency resource.
  • the present application provides a computer readable storage medium comprising instructions that, when executed on a computer, perform the methods of the above.
  • the present application provides a computer program product comprising instructions for performing the methods described above when the computer program product runs on a computer.
  • the embodiment of the present application has the following advantages: when the base station uses the time-frequency resource to transmit the pilot signal, the sending moment of the first OFDM symbol in the first set is in the second set.
  • the first OFDM symbol is sent before the moment. That is, during the transmission of the entire pilot signal, the receiving device can immediately start decoding the first codeword after receiving the time-frequency resource of the first codeword, thereby advancing the decoding time of the first codeword. And further, the decoding time of the second codeword is advanced.
  • the MCS indication value of the first codeword is greater than the MCS indication value of the second codeword, the decoding success rate of the first codeword is higher. Since the decoding of the second codeword is based on the decoding result of the first codeword, the decoding success rate of the first codeword is higher, and the decoding success rate of the second codeword can be effectively improved.
  • 1 is a schematic diagram of a conventional demodulation pilot pattern
  • FIG. 2 is a schematic diagram of an embodiment of a data processing method in an embodiment of the present application.
  • FIG. 3 is a schematic diagram of a demodulation pilot pattern in an embodiment of the present application.
  • FIG. 4 is another schematic diagram of demodulating a pilot pattern in an embodiment of the present application.
  • FIG. 5 is another schematic diagram of demodulating a pilot pattern in an embodiment of the present application.
  • FIG. 6 is another schematic diagram of demodulating a pilot pattern in an embodiment of the present application.
  • FIG. 7 is another schematic diagram of demodulating a pilot pattern in an embodiment of the present application.
  • FIG. 8 is another schematic diagram of a demodulation pilot pattern in an embodiment of the present application.
  • FIG. 9 is another schematic diagram of demodulating a pilot pattern in an embodiment of the present application.
  • FIG. 10 is a schematic diagram of another embodiment of a data processing method according to an embodiment of the present application.
  • FIG. 11 is another schematic diagram of a demodulation pilot pattern in an embodiment of the present application.
  • FIG. 12 is another schematic diagram of a demodulation pilot pattern in an embodiment of the present application.
  • FIG. 13 is another schematic diagram of demodulating a pilot pattern in an embodiment of the present application.
  • FIG. 14 is another schematic diagram of demodulating a pilot pattern in an embodiment of the present application.
  • FIG. 15 is a schematic diagram of an embodiment of a base station according to an embodiment of the present application.
  • 16 is a schematic diagram of another embodiment of a base station according to an embodiment of the present application.
  • FIG. 17 is a schematic diagram of an embodiment of a receiving device according to an embodiment of the present application.
  • FIG. 18 is a schematic diagram of another embodiment of a receiving device according to an embodiment of the present application.
  • FIG. 19 is a schematic diagram of another embodiment of a base station according to an embodiment of the present application.
  • FIG. 20 is a schematic diagram of another embodiment of a base station according to an embodiment of the present application.
  • FIG. 21 is a schematic diagram of another embodiment of a receiving device according to an embodiment of the present application.
  • FIG. 22 is a schematic diagram of another embodiment of a receiving device according to an embodiment of the present application.
  • the embodiment of the present application provides a data processing method, a pilot pattern generation method, and a related apparatus, which are used to effectively advance the decoding time of the second codeword, and effectively improve the decoding accuracy of the second codeword.
  • the DMRS of the service data is transmitted simultaneously with the service data, and is located in the same time-frequency resource range.
  • each layer of data has a corresponding DMRS port.
  • the DMRS on the DMRS port of each layer of data is subjected to the same precoding as the layer data, so channel estimation can be performed by using the DMRS of the layer data as the channel experienced by the layer data transmission, and the data is demodulated for the layer data. And decoding.
  • a base station simultaneously transmits multiple layers of data a plurality of DMRS ports are code division multiplexed by using OCC in the frequency domain and/or the time domain. Code division multiplexing can bring spread spectrum gain and help improve channel estimation performance.
  • the DMRS pattern is shown in (b) of Figure 1. The two patterns occupy the same number of REs (both 12 REs), and the OCC lengths are different. According to the DMRS pattern in (a) of FIG.
  • the terminal device can perform channel estimation on the time-frequency resources of each group of OCC2, and obtain a total of six sets of channel estimation data, and perform time-frequency two-dimensional on the entire subframe.
  • the channel is interpolated to obtain the channel estimation result for each RE.
  • the terminal device can perform channel estimation on the time-frequency resources of each group of OCC4, and can obtain three sets of channel estimation data in total, and perform time-frequency two-dimensional on the entire subframe.
  • Channel interpolation is performed to obtain a channel estimation result for each RE. Since the latter can only obtain three sets of channel estimation data for channel interpolation, the performance is worse than the former from the overall channel estimation result of the entire subframe. Therefore, in the prior art, when the length of the OCC changes, there is a loss of channel estimation performance.
  • the embodiment of the present application provides the following technical solution: before transmitting a pilot signal, the base station acquires a demodulation pilot pattern in a transmission time unit, where the demodulation pilot pattern includes a first codeword. And demodulating the pilot pattern and the second demodulation pilot pattern of the second codeword; wherein the first demodulation pilot pattern indicates a time-frequency resource of each OFDM symbol in the first set, and the second demodulation pilot pattern Instructing a time-frequency resource of each OFDM symbol in the second set; and the MCS indication value of the first codeword is greater than an MCS indication value of the second codeword; and then the base station maps the pilot signal according to the demodulation pilot pattern.
  • the base station sends the pilot signal, wherein when the base station transmits the time-frequency resource, the first OFDM symbol in the first set is transmitted in the first OFDM symbol in the second set.
  • the first OFDM symbol in the first set is the OFDM symbol with the earliest transmission time in the first set
  • the first OFDM symbol in the second set is the transmission time in the second set. The earliest OFDM symbol.
  • the base station transmits the pilot signal by using multiple codewords.
  • an embodiment of the data processing method in the embodiment of the present application includes:
  • the base station acquires a demodulation pilot pattern in the transmission time unit.
  • the base station Before the base station transmits the pilot signal, the base station acquires a demodulation pilot pattern in a transmission time unit that transmits the pilot signal, where the demodulation pilot pattern includes a first demodulation of a demodulation reference signal port of the first codeword. a second demodulation pilot pattern of the demodulation reference signal port of the pilot pattern and the second codeword, wherein the first demodulation pilot pattern indicates a time-frequency resource of each OFDM symbol in the first set, the second demodulation The pilot pattern indicates time-frequency resources of each OFDM symbol in the second set, and the MCS indication value of the first codeword is greater than the MCS indication value of the second codeword.
  • the transmission time of the first OFDM symbol in the first set is before the transmission time of the first OFDM symbol in the second set, and the first OFDM symbol in the first set is in the first set.
  • the OFDM symbol whose transmission time is the earliest, and the first OFDM symbol in the second set is the OFDM symbol whose transmission time is the earliest in the second set.
  • the demodulation pilot pattern in a transmission time unit wherein the horizontal axis is the time domain and the vertical axis is the frequency domain, and the first codeword and the second codeword are both performed with an OCC of length 4.
  • Frequency domain code division multiplexing In FIG. 3, the order from left to right is the order in the time domain from the heading, that is, the first OFDM symbol of the first codeword is an OFDM symbol with a time domain of 1, and the first of the second codewords
  • the OFDM symbols are OFDM symbols with a time domain of 2, and so on.
  • the illustration of each demodulation pilot pattern in this embodiment is in accordance with this rule. It can be seen from FIG. 3 that the first OFDM symbol of the first codeword occupies all REs in the frequency domain, that is, 12 REs, and the first OFDM symbol of the second codeword occupies all REs in the frequency domain. , that is 12 RE.
  • the demodulation pilot pattern further includes, but is not limited to, the following characteristics:
  • the number of REs of the first OFDM symbol in the first OFDM symbol set indicated by the first demodulation pilot pattern is greater than the second OFDM symbol set indicated by the second demodulation pilot pattern.
  • the first OFDM symbol of the first codeword occupies all REs in the frequency domain, that is, 12 REs; the first OFDM symbol of the second codeword occupies the frequency domain as shown in FIG.
  • FIG. 4 shows only one possible implementation.
  • the second OFDM symbol of the second codeword occupies 8 REs as shown in FIG. 4 in the frequency domain, and may also be other numbers.
  • the limitation is not limited herein, as long as the number of REs occupied by the first OFDM symbol of the first codeword is greater than the number of REs occupied by the first OFDM symbol of the second codeword.
  • the first demodulation pilot pattern has a number of REs occupying at least one OFDM symbol in the first OFDM symbol set less than a number of REs occupied on the first OFDM symbol.
  • the first demodulation pilot pattern includes two OFDM symbols in the first OFDM symbol set, as shown in (a) of FIG. 5, the first OFDM of the first codeword The symbol occupies 12 REs in the frequency domain, and the second OFDM symbol of the first codeword occupies 8 REs in the frequency domain.
  • each OFDM symbol in the first OFDM symbol set is in a sorted by the time domain position, and the first demodulation pilot pattern is occupied on each OFDM symbol in the first OFDM symbol set.
  • the number of REs may be decreased in sequence.
  • the first demodulation pilot pattern when the first demodulation pilot pattern includes three OFDM symbols in the first OFDM symbol set, the first demodulation pilot pattern is in the The number of REs occupied on the second OFDM symbol in the first OFDM symbol set is less than the number of REs occupied by the first demodulation pilot pattern on the first OFDM symbol in the first OFDM symbol set;
  • the number of REs occupied by the first demodulation pilot pattern on the third OFDM symbol in the first OFDM symbol set is smaller than the second OFDM symbol of the first demodulation pilot pattern in the first OFDM symbol set The number of REs occupied.
  • the first OFDM symbol of the first codeword occupies 12 REs in the frequency domain
  • the second OFDM symbol of the first codeword occupies 8 in the frequency domain
  • the third OFDM symbol of the first codeword occupies 4 REs in the frequency domain.
  • the number of REs occupied by the first demodulation pilot pattern on each OFDM symbol in the first OFDM symbol set may be only the first of the first demodulation pilot pattern in the first OFDM symbol set.
  • the number of REs occupied on the OFDM symbols is small.
  • the first OFDM symbol of the first codeword occupies 12 REs in the frequency domain
  • the second OFDM symbol of the first codeword occupies 8 REs in the frequency domain.
  • the third OFDM symbol of a codeword occupies 8 REs in the frequency domain.
  • FIG. 6 only shows one possible way, and there may be other ways in the actual application, and the specific setting manner is not limited herein.
  • the first demodulation pilot pattern has at least one RE set occupied by the OFDM symbol in the first OFDM symbol set as a true subset of the RE set occupied on the first OFDM symbol;
  • the first demodulation pilot pattern has an intersection of an RE set occupied by at least one OFDM symbol and an RE set occupied by the first OFDM symbol in the first OFDM symbol set is an empty set.
  • the demodulation guide in a transmission time unit is shown in (a) of FIG. 7 .
  • the horizontal axis is the time domain and the vertical axis is the frequency domain
  • the first codeword and the second codeword are both frequency domain code division multiplexed by using an OCC of length 2
  • the first codeword is
  • the set of REs occupied by an OFDM symbol in the frequency domain is (2, 3, 6, 7, 10, 11)
  • the set of REs occupied by the second OFDM symbol of the first codeword in the frequency domain is (2, 3, 10, 11)
  • the RE sets of the OFDM symbols in the first demodulation pilot pattern in the first OFDM symbol set are not empty.
  • the REs occupied by the first demodulation pilot pattern on each OFDM symbol in the first OFDM symbol set may be the first of the first demodulation pilot pattern in the first OFDM symbol set.
  • a true subset of the RE sets of OFDM symbols For example, if the first demodulation pilot pattern includes three OFDM symbols in the first OFDM symbol set, the first demodulation pilot pattern occupies on a second OFDM symbol in the first OFDM symbol set.
  • the set of REs is a true subset of the set of REs occupied by the first demodulation pilot pattern on the first OFDM symbol in the first set of OFDM symbols; then the first demodulation pilot pattern is at the first OFDM symbol
  • the set of REs occupied on the third OFDM symbol in the set is a true subset of the set of REs occupied by the first demodulation pilot pattern on the first OFDM symbol in the first set of OFDM symbols.
  • the RE set of each OFDM symbol in the first OFDM symbol set is the same as the first OFDM in the first OFDM symbol set of the first demodulation pilot pattern.
  • the intersection of the RE sets of symbols is an empty set.
  • the first demodulation pilot pattern occupies on a second OFDM symbol in the first OFDM symbol set.
  • the intersection of the set of REs and the set of REs occupied by the first demodulation pilot pattern on the first OFDM symbol in the first set of OFDM symbols is an empty set; then the first demodulation pilot pattern is at the first
  • the intersection of the set of REs occupied on the third OFDM symbol in the OFDM symbol set and the set of REs occupied by the first demodulation pilot pattern on the first OFDM symbol in the first set of OFDM symbols is an empty set.
  • the horizontal axis is the time domain and the vertical axis is the frequency domain, and the first codeword and the second codeword are both in length.
  • Frequency domain code division multiplexing for the OCC of 2 the first OFDM symbol of the first codeword occupies a set of REs in the frequency domain (2, 3, 6, 7, 10, 11), the first code The set of REs occupied by the second OFDM symbol of the word in the frequency domain is (2, 3, 10, 11), and the set of REs occupied by the third OFDM symbol of the first codeword in the frequency domain is (6, 7) It can be seen that the RE set of the second OFDM symbol occupied by the first OFDM symbol in the frequency domain and the RE set occupied by the third OFDM symbol of the first codeword in the frequency domain are both a true subset of the set of REs occupied by the first OFDM symbol of the first codeword in the frequency domain; and the set of REs occupied by the third OFDM symbol of the first codeword in the frequency domain and the first codeword The intersection of the set of REs
  • the first OFDM symbol of the first codeword in (b) in FIG. 7 occupies a set of REs in the frequency domain (2, 3, 6, 7, 10, 11)
  • the first codeword The set of REs occupied by the second OFDM symbol in the frequency domain is (4, 5, 8, 9)
  • the set of REs occupied by the third OFDM symbol of the first codeword in the frequency domain is (0, 1)
  • intersection of the set of REs occupied by the first OFDM symbol of the word in the frequency domain is an empty set; and the set of REs occupied by the third OFDM symbol of the first codeword in the frequency domain and the second of the first codeword
  • the intersection of the set of REs occupied by the OFDM symbols in the frequency domain is also an empty set.
  • FIG. 7 in this embodiment only shows one possible mode, and specific settings are not limited herein.
  • the number of REs occupied by the second demodulation pilot pattern in at least one OFDM symbol in the second OFDM symbol set is smaller than the first OFDM.
  • the first OFDM symbol of the second codeword occupies 8 REs in the frequency domain
  • the second OFDM symbol of the second codeword occupies 4 REs in the frequency domain.
  • each OFDM symbol in the second OFDM symbol set is in the sorted by the time domain position, and the second demodulation pilot pattern is occupied on each OFDM symbol in the first OFDM symbol set.
  • the number of REs may be decreased in sequence, for example, the number of REs occupied by the second demodulation pilot pattern on the second OFDM symbol in the second OFDM symbol set is smaller than the second demodulation pilot pattern in the first The number of REs occupied on the first OFDM symbol in the second OFDM symbol set; then the second demodulation pilot pattern occupies less than the number of REs on the third OFDM symbol in the second OFDM symbol set The number of REs occupied by the second demodulation pilot pattern on the second OFDM symbol in the second set of OFDM symbols. Meanwhile, the number of REs occupied by the second demodulation pilot pattern on each OFDM symbol in the second OFDM symbol set may be only the first of the second demodulation pilot pattern in the second OFDM symbol set. The number of REs occupied on the OFDM symbols is small.
  • the specific setting method is not limited here.
  • the second demodulation pilot pattern has at least one RE set occupied by the OFDM symbol in the second OFDM symbol set as the first OFDM. a true subset of the set of REs occupied by the symbol; or, the second demodulation pilot pattern has at least one set of REs occupied on one OFDM symbol and a set of REs occupied on the first OFDM symbol in the second set of OFDM symbols The intersection is an empty set. As shown in FIG.
  • the first OFDM symbol of the second codeword occupies a set of REs in the frequency domain (0, 1, 2, 3, 8, 9, 10, 11), and the second codeword
  • the set of REs occupied by the second OFDM symbol in the frequency domain is (4, 5, 6, 7), and it can be seen that the second codeword is in the RE set of the second OFDM symbol occupied in the frequency domain.
  • the intersection of the set of REs occupied by the second codeword in the frequency domain of the first OFDM symbol is an empty set. If the first OFDM symbol of the second codeword occupies a set of REs in the frequency domain (0, 1, 2, 3, 8, 9, 10, 11), and the second OFDM of the second codeword
  • the set of REs occupied by the symbols in the frequency domain is (8, 9, 10, 11).
  • the set of REs occupied by the second codeword in the frequency domain of the second OFDM symbol is the second code.
  • the REs occupied by the second demodulation pilot pattern on each OFDM symbol in the second OFDM symbol set are not empty.
  • the REs occupied by the second demodulation pilot pattern on each OFDM symbol in the second OFDM symbol set may be a true subset in sequence or an empty set in sequence.
  • the RE set occupied by the second demodulation pilot pattern on the second OFDM symbol in the second OFDM symbol set is the first one of the second demodulation pilot pattern in the second OFDM symbol set.
  • the set of REs occupied by the second demodulation pilot pattern on the third OFDM symbol in the second set of OFDM symbols is the second demodulation pilot pattern at A true subset of the set of REs occupied on the second OFDM symbol in the second set of OFDM symbols.
  • the first set of REs occupied by the second demodulation pilot pattern on the second OFDM symbol in the second OFDM symbol set and the second demodulation pilot pattern in the second OFDM symbol set The intersection of the set of REs occupied on the OFDM symbol is an empty set; then the second demodulation pilot pattern occupies the RE set on the third OFDM symbol in the second OFDM symbol set and the second demodulation pilot pattern The intersection of the set of REs occupied on the second OFDM symbol in the second set of OFDM symbols is an empty set.
  • the number of REs occupied by the second demodulation pilot pattern in at least one OFDM symbol in the second OFDM symbol set is greater than the first one.
  • the first OFDM symbol of the second codeword occupies 8 REs in the frequency domain
  • the second OFDM symbol of the second codeword occupies 12 in the frequency domain.
  • each OFDM symbol in the second OFDM symbol set is in the sorted by the time domain position, and the second demodulation pilot pattern is occupied on each OFDM symbol in the first OFDM symbol set.
  • the number of REs may be sequentially increased.
  • the number of REs occupied by the second demodulation pilot pattern on the second OFDM symbol in the second OFDM symbol set is greater than the second demodulation pilot pattern.
  • the number of REs occupied by the second demodulation pilot pattern on the second OFDM symbol in the second set of OFDM symbols As shown in (b) of FIG. 9, the first OFDM symbol of the second codeword occupies 4 REs in the frequency domain, and the second OFDM symbol of the second codeword occupies 8 in the frequency domain.
  • the third OFDM symbol of the second codeword occupies 12 REs in the frequency domain. Meanwhile, the number of REs occupied by the second demodulation pilot pattern on each OFDM symbol in the second OFDM symbol set may be only the first of the second demodulation pilot pattern in the second OFDM symbol set. The number of REs occupied on the OFDM symbols is large.
  • the specific setting method is not limited here.
  • the base station may select various different demodulation pilot patterns according to the rank indication RI. For example, when the RI belongs to the set ⁇ 5, 6, 7, 8 ⁇ , the base station may select all positive lengths of 4. The demodulation pilot pattern of the code division multiplexing is performed; when the RI is 1 or 2, the base station can select the demodulation pilot pattern as shown in FIG.
  • the base station may further send, to the receiving device, pilot configuration information, where the pilot configuration information may be used to indicate that, in the second OFMD symbol set, the second domain is demodulated according to a time domain location.
  • the number of REs occupied by the pilot pattern on each OFDM symbol is increased or decreased.
  • the base station maps the pilot signal to the time-frequency resource according to the demodulation pilot pattern, and sends the pilot signal to the receiving device.
  • the base station maps the pilot signal to be transmitted on the time-frequency resource according to the demodulation pilot pattern, and then sends the pilot signal to the receiving device in the network.
  • the receiving device may be a mobile terminal, or may be another network element in the network, and the specific form is not limited herein.
  • the receiving device receives the pilot signal according to the demodulation pilot pattern.
  • the receiving device Before receiving the pilot signal, the receiving device acquires the demodulation pilot pattern and related indication information, and then the receiving device receives the pilot signal sent by the base station according to the demodulation pilot pattern and related indication information.
  • the time domain position of the first OFDM symbol in the first OFDM symbol set is the first in the second OFDM symbol set in the sorting according to the time domain location.
  • OFDM symbols during the transmission of the entire pilot signal, after receiving the time-frequency resource of the first codeword, the decoding of the first codeword can be started immediately, thereby decoding the first codeword in advance
  • the decoding time of the second codeword is advanced.
  • the MCS indication value of the first codeword is greater than the MCS indication value of the second codeword, and the decoding success rate of the first codeword can be effectively improved, thereby improving the decoding success rate of the second codeword.
  • the base station transmits the pilot signal by using a single codeword.
  • FIG. 10 another embodiment of the data processing method in the embodiment of the present application includes:
  • the base station determines a rank indication RI and pilot configuration information, and determines a target demodulation pilot pattern from the set of demodulation pilot patterns corresponding to the RI according to the pilot configuration information.
  • the base station Before the base station sends the pilot signal, the base station acquires an RI for transmitting the pilot signal, and pilot configuration information, where the pilot configuration information is used to indicate that the base station selects one of the demodulation pilot pattern sets corresponding to the RI.
  • the pilot pattern is demodulated as the target demodulation pilot pattern.
  • the demodulation pilot pattern set corresponding to the RI includes at least two demodulation pilot patterns, and each demodulation pilot pattern in the demodulation pilot pattern set occupies a time-frequency resource location where the OFDM symbol set is located, And the number of time-frequency resource units RE occupied by each demodulation pilot pattern in the demodulated pilot pattern set in the occupied time-frequency resource location is different, and each demodulation pilot in the demodulation pilot pattern set
  • the pattern adopts different orthogonal code patterns, and the orthogonal code pattern includes a frequency domain one-dimensional spreading pattern and a time-frequency two-dimensional spreading pattern, and the at least two demodulation pilot patterns are demodulation guides under the same seed frame type. Frequency pattern.
  • the frequency domain one-dimensional spreading pattern refers to a pattern in which an orthogonal code is spread in a frequency domain within one OFDM symbol.
  • an orthogonal code of length N the frequency domain shift spread pattern refers to code division multiplexing of orthogonal codes on consecutive or discontinuous N REs within the same OFDM symbol.
  • N is a positive integer, such as 2, 4, 8.
  • the time-frequency two-dimensional spreading pattern refers to a pattern in which orthogonal codes are spread over more than one OFDM symbol, including time domain spreading and frequency domain spreading.
  • an orthogonal code of length N is spread over 2 OFDM symbols, wherein frequency domain spreading is performed on 4 consecutive or discontinuous REs on each OFDM symbol, on 2 OFDM symbols Time domain spread spectrum.
  • the RI is different
  • the pilot patterns in the set of demodulation pilot patterns have different situations, and the specific circumstances include, but are not limited to, the following possible implementation manners:
  • the orthogonal code pattern of the demodulation pilot pattern in the demodulation pilot pattern set includes:
  • each group of OFDM symbols frequency domain code division multiplexing is performed by using an orthogonal code of length 2, and each group of OFDM symbols includes one OFDM symbol, such as in a transmission time unit shown in (a) of FIG.
  • Demodulating a pilot pattern wherein the horizontal axis is the time domain and the vertical axis is the frequency domain, and the demodulation pilot pattern is frequency domain code division multiplexed using an OCC of length 2, wherein the first group of OFDM symbols is in the frequency domain
  • the set of REs occupied is (2, 3, 6, 7, 10, 11), and the set of REs occupied by the second group of OFDM symbols in the frequency domain is (0, 1, 8, 9).
  • a demodulation pilot pattern in a transmission time unit is shown in (b) of FIG. 11, wherein the horizontal axis is the time domain and the vertical axis is the frequency domain.
  • the demodulation pilot pattern is frequency-domain code division multiplexed by using an OCC of length 2, wherein the set of REs occupied by the first group of OFDM symbols in the frequency domain is (2, 3, 6, 7, 10, 11)
  • the set of REs occupied by the second group of OFDM symbols in the frequency domain is (0, 1, 8, 9).
  • the set of REs occupied by the third group of OFDM symbols in the frequency domain is (4, 5).
  • each group of OFDM symbols frequency domain code division multiplexing is performed by using an orthogonal code of length 4, and each group of OFDM symbols includes one OFDM symbol.
  • Domain code division multiplexing where the set of REs occupied by the first group of OFDM symbols in the frequency domain is (0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11), the first The set of REs occupied by the two sets of OFDM symbols in the frequency domain is (0, 1, 2, 3, 8, 9, 10, 11).
  • the demodulation pilot pattern may also be another possible implementation manner, as shown in (b) of FIG. 12, a demodulation pilot pattern in a transmission time unit, wherein the horizontal axis is the time domain and the vertical axis
  • the demodulation pilot pattern is frequency domain code division multiplexed using an OCC of length 4, wherein the set of REs occupied by the first group of OFDM symbols in the frequency domain is (0, 1, 2, 3, 4). , 5, 6, 7, 8, 9, 10, 11), the set of REs occupied by the second group of OFDM symbols in the frequency domain is (4, 5, 6, 7).
  • the demodulation pilot pattern includes three sets of OFDM symbols
  • a demodulation pilot pattern in a transmission time unit is shown in (c) of FIG. 12, wherein the horizontal axis is the time domain and the vertical axis
  • the demodulation pilot pattern is frequency domain code division multiplexed using an OCC of length 4, wherein the set of REs occupied by the first group of OFDM symbols in the frequency domain is (0, 1, 2, 3, 4). , 5, 6, 7, 8, 9, 10, 11), the set of REs occupied by the second group of OFDM symbols in the frequency domain is (0, 1, 2, 3, 8, 9, 10, 11), The set of REs occupied by the third group of OFDM symbols in the frequency domain is (4, 5, 6, 7).
  • the frequency division and the time domain code division multiplexing are performed by using an orthogonal code of length 8 in each group of OFDM symbols, wherein the frequency domain code division multiplexing length is 4, and the time domain code division multiplexing length is 2.
  • Each group of OFDM symbols includes two consecutive OFDM symbols in the time domain, such as a demodulation pilot pattern in a transmission time unit shown in (a) of FIG.
  • the demodulation pilot pattern is frequency-domain code division multiplexed by using an OCC of length 8, wherein the RE set of the first group of OFDM symbols occupied in the frequency domain is OFDM symbol 1 and OFDM symbol 2 (0) 1,2,3,4,5,6,7,8,9,10,11), the RE set of the second set of OFDM symbols occupied in the frequency domain is OFDM symbol 5 and OFDM symbol 6 (0) , 1, 2, 3, 8, 9, 10, 11).
  • the demodulation pilot pattern may also be another possible implementation manner, as shown in (b) of FIG.
  • a demodulation pilot pattern in a transmission time unit wherein the horizontal axis is the time domain and the vertical axis
  • the demodulation pilot pattern is frequency-domain code division multiplexed using an OCC of length 8.
  • the RE set of the first set of OFDM symbols occupied in the frequency domain is OFDM symbol 1 and OFDM symbol 2 (0). 1,2,3,4,5,6,7,8,9,10,11), the RE set of the second group of OFDM symbols occupied in the frequency domain is OFDM symbol 5 and OFDM symbol 6 (4) , 5, 6, 7).
  • the demodulation pilot pattern includes three sets of OFDM symbols, a demodulation pilot pattern in a transmission time unit is shown in (c) of FIG.
  • the demodulation pilot pattern is frequency-domain code division multiplexed by using an OCC of length 8, wherein the RE set of the first group of OFDM symbols occupied in the frequency domain is OFDM symbol 1 and OFDM symbol 2 (0, 1) , 2,3,4,5,6,7,8,9,10,11), the RE set of the second set of OFDM symbols occupied in the frequency domain is OFDM symbol 5 and OFDM symbol 6 (0, 1 , 2, 3, 8, 9, 10, 11), the RE set occupied by the third group of OFDM symbols in the frequency domain is (4, 5, 6, 7) on the OFDM symbol 5 and the OFDM symbol 6.
  • the orthogonal code pattern of the demodulation pilot pattern in the demodulation pilot pattern set includes:
  • Frequency domain code division multiplexing is performed in each OFDM symbol by using an orthogonal code of length 4, and each group of OFDM symbols includes one OFDM symbol, as shown in FIG.
  • the frequency division and the time domain code division multiplexing are performed by using an orthogonal code of length 8 in each group of OFDM symbols, wherein the frequency domain code division multiplexing length is 4, and the time domain code division multiplexing length is 2
  • Each group of OFDM symbols includes two consecutive OFDM symbols in the time domain, as shown in FIG.
  • the orthogonal code pattern of the demodulation pilot pattern in the demodulation pilot pattern set includes:
  • Frequency division and time domain code division multiplexing are performed in each group of OFDM symbols by using an orthogonal code of length 8, wherein the frequency domain code division multiplexing length is 4, and the time domain code division multiplexing length is 2, each group The OFDM symbol includes two consecutive OFDM symbols in the time domain, as shown in FIG.
  • the target demodulation pilot pattern determined from each demodulation pilot pattern in the demodulation pilot pattern set corresponding to the RI may include, but is not limited to, the following possible features:
  • the OFDM symbol set occupied by the target demodulation pilot pattern includes N sets of OFDM symbols, and the target demodulation pilot pattern is in the OFDM symbol in a top-to-back order according to a time domain position.
  • the number of REs occupied by at least one OFDM symbol in the set is smaller than the number of REs occupied on the first set of OFDM symbols, and each set of OFDM symbols in the set of OFDM symbols includes at least one OFDM symbol, which is a positive integer. If the OFDM symbol set includes two sets of OFDM symbols, as shown in (a) of FIG.
  • the set of REs occupied by the first group of OFDM symbols in the frequency domain is (2, 3, 6, 7, 10, 11)
  • the set of REs occupied by the second group of OFDM symbols in the frequency domain is (2, 3, 10, 11).
  • each group of OFDM symbols in the OFDM symbol set is sorted by the time domain position, and the RE of the target demodulation pilot pattern is occupied by each group of OFDM symbols in the OFDM symbol set.
  • the number of bits may be sequentially decreased, for example, if the target demodulation pilot pattern includes three sets of OFDM symbols in the OFDM symbol set, the target demodulation pilot pattern occupies on the second group of OFDM symbols in the OFDM symbol set.
  • the number of REs is less than the number of REs occupied by the target demodulation pilot pattern on the first set of OFDM symbols in the set of OFDM symbols; then the third set of OFDM of the target demodulation pilot pattern in the set of OFDM symbols
  • the number of REs occupied on the symbol is less than the number of REs occupied by the target demodulation pilot pattern on the second set of OFDM symbols in the set of OFDM symbols.
  • the number of REs occupied by the target demodulation pilot pattern on each group of OFDM symbols in the OFDM symbol set may be only occupied by the target demodulation pilot pattern on the first group of OFDM symbols in the OFDM symbol set.
  • the number of REs is small.
  • the specific setting method is not limited here. As shown in (b) of FIG.
  • the set of REs occupied by the first group of OFDM symbols in the frequency domain is (2, 3, 6, 7, 10, 11), and the second group of OFDM symbols is in the frequency domain.
  • the set of REs occupied is (2, 3, 10, 11), and the set of REs occupied by the third group of OFDM symbols in the frequency domain is (6, 7).
  • the demodulation pilot pattern can be Only the number of REs occupied by the third group in the frequency domain is smaller than the number of REs occupied by the first group of OFDM symbols in the frequency domain.
  • the demodulation pilot pattern may also be as shown in FIG. 11.
  • the number of REs occupied by the first group of OFDM symbols in the frequency domain is greater than the number of REs occupied by the second group of OFDM symbols in the frequency domain;
  • the number of REs occupied by the two groups of OFDM symbols in the frequency domain is greater than the number of REs occupied by the third group of OFDM symbols in the frequency domain.
  • the specific method is not limited herein.
  • the target demodulation pilot pattern has an intersection of an RE set occupied by at least one OFDM symbol and an RE set occupied on the first set of OFDM symbols in the OFDM symbol set is an empty set; or
  • the target demodulation pilot pattern has at least a set of REs occupied by a set of OFDM symbols in the OFDM symbol set as a true subset of RE sets occupied on the first set of OFDM symbols.
  • the RE of the target demodulation pilot pattern occupied by each group of OFDM symbols in the OFDM symbol set is not empty.
  • the REs of the target demodulation pilot pattern occupied by each group of OFDM symbols in the OFDM symbol set may be a true subset in turn or an empty set in turn.
  • the set of REs occupied by the target demodulation pilot pattern on the second group of OFDM symbols in the OFDM symbol set is the RE occupied by the target demodulation pilot pattern on the first group of OFDM symbols in the OFDM symbol set.
  • a true subset of the set then the set of REs occupied by the target demodulation pilot pattern on the third set of OFDM symbols in the set of OFDM symbols is the second set of OFDM symbols of the target demodulation pilot pattern in the set of OFDM symbols The true subset of the set of REs occupied.
  • the RE set of the target demodulation pilot pattern occupied on the second group of OFDM symbols in the OFDM symbol set and the RE occupied by the target demodulation pilot pattern on the first group of OFDM symbols in the OFDM symbol set The intersection of the set is an empty set; then the target demodulation pilot pattern occupies a set of REs on the third set of OFDM symbols in the set of OFDM symbols and a second set of the target demodulation pilot pattern in the set of OFDM symbols
  • the intersection of the set of REs occupied on the OFDM symbol is an empty set.
  • the set of REs occupied by the first group of OFDM symbols in the frequency domain is (2, 3, 6, 7, 10, 11), and the set of REs occupied by the second group of OFDM symbols in the frequency domain is (0, 1, 8, 9), the set of REs occupied by the third group of OFDM symbols in the frequency domain is (4, 5). That is, the intersection of the RE set occupied by the first group of OFDM symbols in the frequency domain and the RE set occupied by the second set of OFDM symbols in the frequency domain is an empty set, that is, the RE occupied by the third set of OFDM symbols in the frequency domain The intersection of the set and the set of REs occupied by the second set of OFDM symbols in the frequency domain is an empty set.
  • the set of REs occupied by the first group of OFDM symbols in the frequency domain is (2, 3, 6, 7, 10, 11), and the second group of OFDM symbols occupy the frequency domain.
  • the set of REs is (2, 3, 6, 7, 10, 11)
  • the set of REs occupied by the third group of OFDM symbols in the frequency domain is (6, 7). That is, the RE set occupied by the third group of OFDM symbols in the frequency domain is the true subset of the RE set occupied by the first set of OFDM symbols in the frequency domain.
  • the base station maps the pilot signal to the time-frequency resource according to the target demodulation pilot pattern, and sends the pilot signal, the RI, and the pilot configuration information to the receiving device.
  • the base station maps the pilot signal to be transmitted to the time-frequency resource according to the target demodulation pilot pattern, and then sends the pilot signal to the receiving device in the network, and also sends the RI and the pilot configuration information. Give the receiving device.
  • the receiving device may be a mobile terminal, or may be another network element in the network, and the specific form is not limited herein.
  • the receiving device receives the pilot signal according to the target demodulation pilot pattern.
  • the receiving device Before receiving the pilot signal, the receiving device acquires the RI and the pilot configuration information, and then acquires a target demodulation pilot pattern according to the RI and the pilot configuration information, and then the receiving device follows the demodulation pilot.
  • the pattern and associated indication information receive a pilot signal transmitted by the base station.
  • each demodulation pilot pattern included in the demodulation pilot pattern set corresponding to the RI adopts a frequency domain one-dimensional spreading pattern and a positive-frequency code pattern of a time-frequency two-dimensional spreading pattern, which can effectively increase the expansion. Frequency gain, which improves data detection performance.
  • the number of REs occupied by each demodulation pilot pattern in the demodulation pilot pattern set corresponding to the RI is different, and the multiplexing condition of the user may also be increased.
  • an embodiment of a base station in this embodiment of the present application includes:
  • the processing module 1501 is configured to obtain a demodulation pilot pattern in the transmission time unit, where the demodulation pilot pattern includes a first demodulation pilot pattern of the first codeword and a second demodulation pilot pattern of the second codeword
  • the first demodulation pilot pattern indicates a time-frequency resource of each orthogonal frequency division multiplexing OFDM symbol in the first set
  • the second demodulation pilot pattern indicates a time-frequency resource of each OFDM symbol in the second set, where
  • the modulation coded MCS indication value of the first codeword is greater than the MCS indication value of the second codeword
  • the sending module 1502 is configured to map the pilot signal to the time-frequency resource according to the pilot pattern, and send the pilot signal, where the sending moment of the first OFDM symbol in the first set is in the second set. Before the transmission time of the first OFDM symbol, the first OFDM symbol in the first set is the OFDM symbol with the earliest transmission time in the first set.
  • the number of time-frequency resource units RE of the first OFDM symbol in the first set is greater than the number of REs of the first OFDM symbol in the second set.
  • the number of REs of at least one OFDM symbol in the first set is smaller than the number of REs of the first OFDM symbol in the first set.
  • the RE set of the at least one OFDM symbol in the first set is a true subset of the RE set of the first OFDM symbol in the first set; or, the RE of the at least one OFDM symbol exists in the first set.
  • the intersection of the set and the RE set of the first OFDM symbol in the first set is an empty set.
  • the number of REs of at least one OFDM symbol in the second set is smaller than the number of REs of the first OFDM symbol in the second set.
  • the RE set of at least one OFDM symbol in the second set is a true subset of the RE set of the first OFDM symbol in the second set;
  • intersection of the RE set of at least one OFDM symbol in the second set and the RE set of the first OFDM symbol in the second set is an empty set.
  • the number of REs of at least one OFDM symbol in the second set is greater than the number of REs of the first OFDM symbol in the second set.
  • the sending module 1502 is further configured to send, by the sending module, pilot configuration information, where the pilot configuration information is used to indicate that each OFDM symbol in the second set is sent from early to late according to a sending time.
  • the number of REs of each OFDM symbol in the order is increased or decreased.
  • the first demodulation pilot pattern indicates that the orthogonal code of length 4 is used in each OFDM symbol in the first set for frequency domain code division multiplexing
  • the second demodulation pilot pattern indicates that the orthogonal code of length 4 is used for frequency domain code division multiplexing in each OFDM symbol in the second set.
  • the sending time of the first OFDM symbol in the first set is before the sending time of the first OFDM symbol in the second set. That is, during the transmission of the entire pilot signal, the receiving device can immediately start decoding the first codeword after receiving the time-frequency resource of the first codeword, thereby advancing the decoding time of the first codeword. And further, the decoding time of the second codeword is advanced. At the same time, since the MCS indication value of the first codeword is greater than the MCS indication value of the second codeword, the decoding success rate of the first codeword is higher. Since the decoding of the second codeword is based on the decoding result of the first codeword, the decoding success rate of the first codeword is higher, and the decoding success rate of the second codeword can be effectively improved.
  • FIG. 16 another embodiment of the base station in this embodiment of the present application includes:
  • the transceiver 1601 is connected to the processor 1602 via the bus 1603;
  • the bus 1603 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus.
  • PCI peripheral component interconnect
  • EISA extended industry standard architecture
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 16, but it does not mean that there is only one bus or one type of bus.
  • the processor 1602 can be a central processing unit (CPU), a network processor (NP) or a combination of a CPU and an NP.
  • CPU central processing unit
  • NP network processor
  • the processor 1602 can also further include a hardware chip.
  • the hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD) or a combination thereof.
  • the PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a general array logic (GAL) or any combination.
  • the base station may further include a memory 1604.
  • the memory 1604 can include a volatile memory, such as a random-access memory (RAM); the memory can also include a non-volatile memory, such as a flash memory ( A flash memory, a hard disk drive (HDD) or a solid-state drive (SSD); the memory 1604 may also include a combination of the above types of memories.
  • RAM random-access memory
  • non-volatile memory such as a flash memory
  • HDD hard disk drive
  • SSD solid-state drive
  • the memory 1604 may also include a combination of the above types of memories.
  • the memory 1604 can also be used to store program instructions, and the processor 1602 can call the program instructions stored in the memory 1604, and can perform one or more steps in the embodiment shown in FIG. 2 to FIG.
  • the selected implementation implements the function of the behavior of the base station in the above method.
  • the processor 1602 performs the following steps:
  • the demodulation pilot pattern includes a first demodulation pilot pattern of a first codeword and a second demodulation pilot pattern of a second codeword
  • the first demodulation The pilot pattern indicates a time-frequency resource of each orthogonal frequency division multiplexing OFDM symbol in the first set
  • the second demodulation pilot pattern indicating a time-frequency resource of each OFDM symbol in the second set
  • modulation of the first codeword Encoding an MCS indication value that is greater than an MCS indication value of the second codeword
  • the transceiver 1601 performs the following steps:
  • the sending time of the first OFDM symbol in the first set is the first OFDM symbol in the second set Before the transmission time, the first OFDM symbol in the first set is the OFDM symbol with the earliest transmission time in the first set.
  • the transceiver 1601 also performs all steps of data transceiving, and the processor also performs processing steps of all data in the above embodiments.
  • the sending time of the first OFDM symbol in the first set is before the sending time of the first OFDM symbol in the second set. That is, during the transmission of the entire pilot signal, the receiving device can immediately start decoding the first codeword after receiving the time-frequency resource of the first codeword, thereby advancing the decoding time of the first codeword. And further, the decoding time of the second codeword is advanced. At the same time, since the MCS indication value of the first codeword is greater than the MCS indication value of the second codeword, the decoding success rate of the first codeword is higher. Since the decoding of the second codeword is based on the decoding result of the first codeword, the decoding success rate of the first codeword is higher, and the decoding success rate of the second codeword can be effectively improved.
  • an embodiment of a receiving device in this embodiment of the present application includes:
  • the processing module 1701 is configured to obtain a demodulation pilot pattern in the transmission time unit, where the demodulation pilot pattern includes a first demodulation pilot pattern of the first codeword and a second demodulation pilot pattern of the second codeword.
  • the first demodulation pilot pattern indicates a time-frequency resource of each orthogonal frequency division multiplexing OFDM symbol in the first set
  • the second demodulation pilot pattern indicates a time-frequency resource of each OFDM symbol in the second set, where the The modulation coded MCS indication value of one codeword is greater than the MCS indication value of the second codeword;
  • the receiving module 1702 is configured to receive, according to the demodulation pilot pattern, a pilot signal, where the pilot signal is transmitted by the base station according to the demodulation pilot map on a time-frequency resource, where the first one in the first set
  • the transmission time of the OFDM symbols is before the transmission time of the first OFDM symbol in the second set, and the first OFDM symbol in the first set is the OFDM symbol with the earliest transmission time in the first set.
  • the number of time-frequency resource units RE of the first OFDM symbol in the first set is greater than the number of REs of the first OFDM symbol in the second set.
  • the number of REs of at least one OFDM symbol in the first set is smaller than the number of REs of the first OFDM symbol in the first set.
  • the RE set of at least one OFDM symbol in the first set is a true subset of the RE set of the first OFDM symbol in the first set;
  • intersection of the RE set having at least one OFDM symbol in the first set and the RE set of the first OFDM symbol in the first set is an empty set.
  • the number of REs of at least one OFDM symbol in the second set is smaller than the number of REs of the first OFDM symbol in the second set.
  • the RE set of at least one OFDM symbol in the second set is a true subset of the RE set of the first OFDM symbol in the second set;
  • intersection of the RE set of at least one OFDM symbol in the second set and the RE set of the first OFDM symbol in the second set is an empty set.
  • At least one OFDM symbol RE number in the second set is greater than a RE number of the first OFDM symbol in the second set.
  • the receiving module 1702 is further configured to receive pilot configuration information, where the pilot configuration information is used to indicate, in the second set, the OFDM symbols in each of the OFDM symbols according to the sending time from the early to the late. The number increases or decreases.
  • the first demodulation pilot pattern indicates that the orthogonal code of length 4 is used for frequency domain code division multiplexing in each OFDM symbol in the first set;
  • the second demodulation pilot pattern indicates that the orthogonal code of length 4 is used for frequency domain code division multiplexing in each OFDM symbol in the second set.
  • the sending time of the first OFDM symbol in the first set is before the sending time of the first OFDM symbol in the second set. That is, during the transmission of the entire pilot signal, the receiving device can immediately start decoding the first codeword after receiving the time-frequency resource of the first codeword, thereby advancing the decoding time of the first codeword. And further, the decoding time of the second codeword is advanced. At the same time, since the MCS indication value of the first codeword is greater than the MCS indication value of the second codeword, the decoding success rate of the first codeword is higher. Since the decoding of the second codeword is based on the decoding result of the first codeword, the decoding success rate of the first codeword is higher, and the decoding success rate of the second codeword can be effectively improved.
  • another embodiment of the receiving device in the embodiment of the present application includes:
  • the transceiver 1801 is connected to the processor 1802 via the bus 1803;
  • the bus 1803 may be a PCI bus or an EISA bus or the like.
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 18, but it does not mean that there is only one bus or one type of bus.
  • the processor 1802 can be a CPU, NP or a combination of a CPU and an NP.
  • the processor 1802 may further include a hardware chip.
  • the above hardware chip may be an ASIC, a PLD, or a combination thereof.
  • the above PLD may be a CPLD, an FPGA, a GAL, or any combination thereof.
  • the receiving device may further include a memory 1804.
  • the memory 1804 may include a volatile memory such as a RAM; the memory may also include a non-volatile memory such as a flash memory, an HDD or an SSD; the memory 1804 may also A combination of memories of the above kind is included.
  • the memory 1804 can also be used to store program instructions, and the processor 1802 can call the program instructions stored in the memory 1804, and can perform one or more steps in the embodiments shown in FIG. 2 to FIG.
  • the selected implementation implements the function of receiving device behavior in the above method.
  • the processor 1802 performs the following steps: acquiring a demodulation pilot pattern in a transmission time unit, where the demodulation pilot pattern includes a first demodulation pilot pattern of the first codeword and a second demodulation guide of the second codeword a frequency pattern, the first demodulation pilot pattern indicating a time-frequency resource of each orthogonal frequency division multiplexing OFDM symbol in the first set, the second demodulation pilot pattern indicating a time-frequency resource of each OFDM symbol in the second set
  • the modulation coded MCS indication value of the first codeword is greater than the MCS indication value of the second codeword;
  • the transceiver 1801 performs the following steps:
  • the base station Receiving, by the base station, the pilot signal according to the demodulation pilot pattern, where the pilot signal is transmitted on the time-frequency resource according to the demodulation pilot pattern, where the transmission time of the first OFDM symbol in the first set is sent.
  • the first OFDM symbol in the first set is the OFDM symbol with the earliest transmission time in the first set.
  • the processor 1802 further performs processing steps of all data in the foregoing embodiment, and the transceiver 1801 further performs the step of transmitting and receiving all data in the foregoing embodiment.
  • the sending time of the first OFDM symbol in the first set is before the sending time of the first OFDM symbol in the second set. That is, during the transmission of the entire pilot signal, the receiving device can immediately start decoding the first codeword after receiving the time-frequency resource of the first codeword, thereby advancing the decoding time of the first codeword. And further, the decoding time of the second codeword is advanced. At the same time, since the MCS indication value of the first codeword is greater than the MCS indication value of the second codeword, the decoding success rate of the first codeword is higher. Since the decoding of the second codeword is based on the decoding result of the first codeword, the decoding success rate of the first codeword is higher, and the decoding success rate of the second codeword can be effectively improved.
  • another embodiment of a base station in this embodiment of the present application includes:
  • the processing module 1901 is configured to determine a rank indication RI and pilot configuration information, and determine, according to the pilot configuration information, a target demodulation pilot pattern in a transmission time unit from the demodulation pilot pattern set corresponding to the RI, where the solution At least two demodulation pilot patterns are included in the modulated pilot pattern set, each demodulation pilot pattern in the demodulation pilot pattern set each indicating an OFDM symbol in an orthogonal frequency division multiplexing OFDM symbol set a frequency resource, and the number of time-frequency resource units RE of each OFDM symbol indicated by each demodulation pilot pattern in the demodulation pilot pattern set is different, and each demodulation pilot pattern in the demodulation pilot pattern set is used
  • the orthogonal code pattern includes a frequency domain one-dimensional spreading pattern and a time-frequency two-dimensional spreading pattern, and the at least two demodulation pilot patterns are demodulation pilot patterns in the same seed frame type. ;
  • the sending module 1902 is configured to map the pilot signal to the time-frequency resource according to the target pilot pattern, and send the pilot signal, the pilot configuration information, and the RI.
  • the OFDM symbol set indicated by the target demodulation pilot pattern includes N sets of OFDM symbols, where the N sets of OFDM symbols are in a ranking from front to back according to a time domain position, where the target demodulation pilot pattern indicates The number of REs of at least one OFDM symbol in the OFDM symbol set is smaller than the number of REs of the first group of OFDM symbols in the OFDM symbol set indicated by the target demodulation pilot pattern, and the OFDM symbol set indicated by the target demodulation pilot pattern
  • Each group of OFDM symbols in the frame includes at least one OFDM symbol, which is a positive integer.
  • the RE set of the OFDM symbol indicated by the target demodulation pilot pattern has at least one set of REs of the OFDM symbol and the RE set of the first set of OFDM symbols in the OFDM symbol set indicated by the target demodulation pilot pattern.
  • the intersection is an empty set;
  • the RE set of at least one set of OFDM symbols in the OFDM symbol set indicated by the target demodulation pilot pattern is a true subset of the RE sets of the first set of OFDM symbols in the OFDM symbol set indicated by the target demodulation pilot pattern.
  • the orthogonal code pattern of the demodulation pilot pattern in the demodulation pilot pattern set includes using a orthogonal code of length 2 on each group of OFDM symbols to perform frequency domain code.
  • each group of OFDM symbols includes one OFDM symbol;
  • Frequency domain code division multiplexing is performed on each group of OFDM symbols by using an orthogonal code of length 4, and each group of OFDM symbols includes one OFDM symbol;
  • Frequency division and time domain code division multiplexing are performed on each group of OFDM symbols by using an orthogonal code of length 8, wherein the frequency domain code division multiplexing length is 4, and the time domain code division multiplexing length is 2, each group The OFDM symbol includes two consecutive OFDM symbols in the time domain.
  • the orthogonal code pattern of the demodulation pilot pattern in the demodulation pilot pattern set includes using a quadrature code of length 4 in each group of OFDM symbols to perform frequency domain code.
  • each group of OFDM symbols includes one OFDM symbol;
  • Frequency-domain and time-domain code division multiplexing are performed in each group of OFDM symbols by using an orthogonal code of length 8, wherein the frequency domain code division multiplexing length is 4, and the time domain code division multiplexing length is 2 per group of OFDM.
  • the symbols include 2 OFDM symbols that are consecutive in the time domain.
  • the orthogonal code pattern of the demodulation pilot pattern in the demodulation pilot pattern set includes a length of 8 in each group of OFDM symbols.
  • the orthogonal code performs code division multiplexing in the frequency domain and the time domain, wherein the frequency domain code division multiplexing length is 4, the time domain code division multiplexing length is 2, and each group of OFDM symbols includes two consecutive time domains. OFDM symbol;
  • the first OFDM symbol in each group of OFDM symbols is subjected to frequency domain code division multiplexing using an orthogonal code of length 4, and frequency domain code division multiplexing is performed on the second OFDM symbol by using an orthogonal code of length 4, and each group of OFDM is used.
  • the symbols include 2 OFDM symbols that are consecutive in the time domain.
  • each demodulation pilot pattern included in the demodulation pilot pattern set corresponding to the RI adopts a frequency domain one-dimensional spreading pattern and a positive-frequency code pattern of a time-frequency two-dimensional spreading pattern, which can effectively increase the expansion. Frequency gain, which improves data detection performance.
  • each demodulation pilot pattern in the demodulation pilot pattern set corresponding to the RI has a different number of REs occupied, and the channel estimation performance can be ensured when the number of multiplexed users is increased.
  • another embodiment of a base station in this embodiment of the present application includes:
  • Transceiver 2001 processor 2002, bus 2003;
  • the transceiver 2001 is connected to the processor 2002 via the bus 2003;
  • the bus 2003 can be a PCI bus or an EISA bus or the like.
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in FIG. 20, but it does not mean that there is only one bus or one type of bus.
  • the processor 2002 can be a CPU, NP or a combination of CPU and NP.
  • the processor 2002 may further include a hardware chip.
  • the above hardware chip may be an ASIC, a PLD, or a combination thereof.
  • the above PLD may be a CPLD, an FPGA, a GAL, or any combination thereof.
  • the base station may further include a memory 2004.
  • the memory 2004 may include a volatile memory such as a RAM; the memory may also include a non-volatile memory such as a flash memory, an HDD or an SSD; the memory 2004 may also A combination of memories of the above kind is included.
  • the memory 2004 can also be used to store program instructions, and the processor 2002 invokes program instructions stored in the memory 2004, and can perform one or more steps in the embodiments shown in FIG. 2 to FIG. 14, or
  • the selected implementation implements the function of the behavior of the base station in the above method.
  • the processor 2002 performs the steps of: determining a rank indication RI and pilot configuration information, and determining, according to the pilot configuration information, a target demodulation pilot pattern in a transmission time unit from the demodulation pilot pattern set corresponding to the RI.
  • the demodulation pilot pattern set includes at least two demodulation pilot patterns, each demodulation pilot pattern in the demodulation pilot pattern set each indicating an OFDM in an orthogonal frequency division multiplexing OFDM symbol set.
  • the frequency pattern adopts different orthogonal code patterns, and the orthogonal code pattern includes a frequency domain one-dimensional spreading pattern and a time-frequency two-dimensional spreading pattern, and the at least two demodulation pilot patterns are demodulated under the same seed frame type. Pilot pattern
  • the transceiver 2001 performs the following steps:
  • the pilot signal is mapped to the time-frequency resource according to the target pilot pattern, and the pilot signal, the pilot configuration information, and the RI are transmitted.
  • the transceiver 2001 further performs the step of transmitting and receiving all the data in the above embodiment
  • the processor 2002 further performs the processing steps of all the data in the foregoing embodiment.
  • each demodulation pilot pattern included in the demodulation pilot pattern set corresponding to the RI adopts a frequency domain one-dimensional spreading pattern and a positive-frequency code pattern of a time-frequency two-dimensional spreading pattern, which can effectively increase the expansion. Frequency gain, which improves data detection performance.
  • the number of REs occupied by each demodulation pilot pattern in the demodulation pilot pattern set corresponding to the RI is different, and the channel estimation performance can be ensured when the number of multiplexed users is increased.
  • another embodiment of the receiving device in the embodiment of the present application includes:
  • the processing module 2101 is configured to obtain a target demodulation pilot pattern in the transmission time unit, where the target demodulation pilot pattern is determined by the base station according to the pilot configuration information from the demodulation pilot pattern set corresponding to the rank indication RI, the solution At least two demodulation pilot patterns are included in the modulated pilot pattern set, each demodulation pilot pattern in the demodulation pilot pattern set each indicating an OFDM symbol in an orthogonal frequency division multiplexing OFDM symbol set a frequency resource, and the number of time-frequency resource units RE of each OFDM symbol indicated by each demodulation pilot pattern in the demodulation pilot pattern set is different, and each demodulation pilot pattern in the demodulation pilot pattern set is used
  • the orthogonal code pattern includes a frequency domain one-dimensional spreading pattern and a time-frequency two-dimensional spreading pattern, and the at least two demodulation pilot patterns are demodulation pilot patterns in the same seed frame type. ;
  • the receiving module 2102 is configured to receive a pilot signal according to the target demodulation pilot pattern, where the pilot signal is transmitted by the base station according to the target demodulation pilot pattern mapped on the time-frequency resource.
  • the OFDM symbol set indicated by the target demodulation pilot pattern includes N sets of OFDM symbols, where the N sets of OFDM symbols are in a ranking from front to back according to a time domain position, where the target demodulation pilot pattern indicates The number of REs of at least one OFDM symbol in the OFDM symbol set is smaller than the number of REs of the first group of OFDM symbols in the OFDM symbol set indicated by the target demodulation pilot pattern, and the OFDM symbol set indicated by the target demodulation pilot pattern
  • Each group of OFDM symbols in the frame includes at least one OFDM symbol, which is a positive integer.
  • the RE set of the OFDM symbol indicated by the target demodulation pilot pattern has at least one set of REs of the OFDM symbol and the RE set of the first set of OFDM symbols in the OFDM symbol set indicated by the target demodulation pilot pattern.
  • the intersection is an empty set;
  • the RE set of at least one set of OFDM symbols in the OFDM symbol set indicated by the target demodulation pilot pattern is a true subset of the RE sets of the first set of OFDM symbols in the OFDM symbol set indicated by the target demodulation pilot pattern.
  • the orthogonal code pattern of the demodulation pilot pattern in the demodulation pilot pattern set includes frequency domain codes using orthogonal codes of length 2 in each group of OFDM symbols. Division multiplexing, each group of OFDM symbols includes one OFDM symbol;
  • Each group of OFDM symbols is subjected to frequency domain code division multiplexing using an orthogonal code of length 4, and each group of OFDM symbols includes one OFDM symbol;
  • Frequency division and time domain code division multiplexing are performed in each group of OFDM symbols by using an orthogonal code of length 8, wherein the frequency domain code division multiplexing length is 4, and the time domain code division multiplexing length is 2, each group The OFDM symbol includes two consecutive OFDM symbols in the time domain.
  • the orthogonal code pattern of the demodulation pilot pattern in the demodulation pilot pattern set includes using a quadrature code of length 4 in each group of OFDM symbols to perform frequency domain code.
  • each group of OFDM symbols includes one OFDM symbol;
  • Frequency-domain and time-domain code division multiplexing are performed in each group of OFDM symbols by using an orthogonal code of length 8, wherein the frequency domain code division multiplexing length is 4, and the time domain code division multiplexing length is 2 per group of OFDM.
  • the symbols include 2 OFDM symbols that are consecutive in the time domain.
  • the orthogonal code pattern of the demodulation pilot pattern in the demodulation pilot pattern set includes a length of 8 in each group of OFDM symbols.
  • the orthogonal code performs code division multiplexing in the frequency domain and the time domain, wherein the frequency domain code division multiplexing length is 4, the time domain code division multiplexing length is 2, and each group of OFDM symbols includes two consecutive time domains. OFDM symbol;
  • the first OFDM symbol in each group of OFDM symbols is subjected to frequency domain code division multiplexing using an orthogonal code of length 4, and frequency domain code division multiplexing is performed on the second OFDM symbol by using an orthogonal code of length 4, and each group of OFDM is used.
  • the symbols include 2 OFDM symbols that are consecutive in the time domain.
  • each demodulation pilot pattern included in the demodulation pilot pattern set corresponding to the RI adopts a frequency domain one-dimensional spreading pattern and a positive-frequency code pattern of a time-frequency two-dimensional spreading pattern, which can effectively increase the expansion. Frequency gain, which improves data detection performance.
  • the number of REs occupied by each demodulation pilot pattern in the demodulation pilot pattern set corresponding to the RI is different, and the channel estimation performance can be ensured when the number of multiplexed users is increased.
  • another embodiment of the receiving device in the embodiment of the present application includes:
  • Transceiver 2201 processor 2202, bus 2203;
  • the transceiver 2201 is connected to the processor 2202 via the bus 2203;
  • the bus 2203 may be a PCI bus or an EISA bus or the like.
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in FIG. 22, but it does not mean that there is only one bus or one type of bus.
  • the processor 2202 can be a CPU, an NP or a combination of a CPU and an NP.
  • the processor 2202 may further include a hardware chip.
  • the above hardware chip may be an ASIC, a PLD, or a combination thereof.
  • the above PLD may be a CPLD, an FPGA, a GAL, or any combination thereof.
  • the receiving device may further include a memory 2204.
  • the memory 2204 may include a volatile memory such as a RAM; the memory may also include a non-volatile memory such as a flash memory, an HDD or an SSD; the memory 2204 may also A combination of memories of the above kind is included.
  • the memory 2204 can also be used to store program instructions, and the processor 2202 can call the program instructions stored in the memory 2204, and can perform one or more steps in the embodiment shown in FIG. 2 to FIG.
  • the selected implementation implements the function of receiving device behavior in the above method.
  • the processor 2202 performs the following steps:
  • the target demodulation pilot pattern is determined by the base station from the demodulation pilot pattern set corresponding to the rank indication RI according to the pilot configuration information, where the demodulation pilot pattern set is used
  • the demodulation pilot pattern set is used
  • the number of time-frequency resource units RE of each OFDM symbol indicated by each demodulation pilot pattern in the modulated pilot pattern set is different, and each orthogonal demodulation pilot pattern in the demodulation pilot pattern set adopts a different orthogonal code pattern
  • the orthogonal code pattern includes a frequency domain one-dimensional spreading pattern and a time-frequency two-dimensional spreading pattern, and the at least two demodulation pilot patterns are demodulation pilot patterns in the same seed frame type;
  • the transceiver 2201 performs the following steps:
  • the pilot signal is received according to the target demodulation pilot pattern, and the pilot signal is transmitted by the base station according to the target demodulation pilot pattern mapped on the time-frequency resource.
  • the transceiver 2201 further performs the step of transmitting and receiving all the data in the foregoing embodiment, and the processor 2202 further performs the processing steps of all the data in the foregoing embodiment.
  • each demodulation pilot pattern included in the demodulation pilot pattern set corresponding to the RI adopts a frequency domain one-dimensional spreading pattern and a positive-frequency code pattern of a time-frequency two-dimensional spreading pattern, which can effectively increase the expansion. Frequency gain, which improves data detection performance.
  • the number of REs occupied by each demodulation pilot pattern in the demodulation pilot pattern set corresponding to the RI is different, and the channel estimation performance can be ensured when the number of multiplexed users is increased.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • a computer readable storage medium A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

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Abstract

本申请实施例公开了一种数据处理方法，基站以及接收设备，用于有效提前第二码字的译码时刻，加快译码速度。本申请实施例方法包括：基站获取传输时间单元内的解调导频图案，解调导频图案包括第一码字的第一解调导频图案和第二码字的第二解调导频图案，第一解调导频图案指示第一集合中各正交频分复用OFDM符号的时频资源，第二解调导频图案指示第二集合中的各OFDM符号的时频资源，第一码字的调制编码MCS指示值大于第二码字的MCS指示值；基站按照解调导频图案将导频信号映射在时频资源上，发送导频信号，第一集合中的第1个OFDM符号的发送时刻在第二集合中的第1个OFDM符号的发送时刻之前。

Description

一种数据处理方法，基站以及接收设备
本申请要求于2017年04月05日提交中国专利局、申请号为201710217475.X、申请名称为“一种数据处理方法，基站以及接收设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信领域，尤其涉及一种数据处理方法，基站以及接收设备。
背景技术
在通信过程中，业务数据的解调参考信号(英文全称：Demodulation reference signal，简称：DMRS)与业务数据同时发送，并且位于相同的时频资源范围内。当基站在相同的时频资源上传输多层数据时，每层数据都有对应的DMRS端口。每一层数据的DMRS端口上的DMRS与该层数据经过了相同的预编码，因此可以利用该层数据的DMRS进行信道估计，作为该层数据传输经历的信道，用于该层数据的解调和译码。当基站同时传输多层数据时，多个DMRS端口通过在频域和/或时域上使用正交码(英文全称：Orthogonal cover code，简称：OCC)进行码分复用。这样一方面，基站可以在相同的时频资源内同时承载多个端口的解调参考信号，同时不引起不同端口之间的干扰，大幅度降低DMRS的开销；另一方面，通过在频域使用码分复用，带来扩频增益，有助于提升信道估计性能。
现有技术中，当基站同时传输多个码字时，每个码字的DMRS端口占用相同的正交频分复用(英文全称：Orthogonal Frequency Division Multiplexing，简称：OFDM)符号，并且在占用的OFDM符号上，每个码字的DMRS端口占用相同的时频资源单元(英文全称：Resource Element，简称：RE)，即每个码字的DMRS端口占用相同的时频资源。此外，在所占用的OFDM符号上，多个码字的DMRS端口的频域密度相同。频域密度指的是在每个物理资源块(英文全称：Physical Resource Block，简称：PRB)上，DMRS端口占用的RE个数。
在译码过程中，终端设备需要在接收到第一个码字和第二码字的的DMRS之后，进行两个码字的译码。首先，终端设备对第一个码字的译码，并在第一个码字的译码完成之后，终端设备才可以进行第二个码字的译码，并且第二个码字的译码需要基于第一个码字的译码结果。由于已有技术中，两个码字的DMRS端口占用相同的时频资源因此，第二个码字开始译码的时延较大，从而导致数据译码时延大。
发明内容
本申请实施例提供了一种数据处理方法，基站以及接收设备，用于有效提前第二码字的译码时刻，加快译码速度。
第一方面，本申请实施例提供一种数据处理方法，包括：
该基站在传输导频信号之前，获取传输时间单元内的解调导频图案，该解调导频图案包括第一码字的第一解调导频图案和第二码字的第二解调导频图案；其中，该第一解调导频图案指示第一集合中各OFDM符号的时频资源，该第二解调导频图案指示第二集合中各有OFDM符号的时频资源；该第一码字的调制编码(英文全称：Modulation and Coding Scheme，简称：MCS)指示值大于该第二码字的MCS指示值；然后该基站将导频信号按照该 解调导频图案映射在时频资源，最后该基站发送该导频信号，其中，该基站发送时频资源时，该第一集合中的第1个OFDM符号的发送时刻在该第二集合中的第1个OFDM符号的发送时刻之前，该第一集合中的第1个OFDM符号为该第一集合中的发送时刻最早的OFDM符号，该第二集合中的第1个OFDM符号为该第二集合中的发送时刻最早的OFDM符号。
本申请实施例提供的技术方案中，该第一码字的第一解调导频图案为该第一码字的DRMS的解调导频图案，该第二码字的第二解调导频图案为该第二码字的DRMS的解调导频图案。同时该传输时间单元内即为该基站发送导频信号时的一个子帧内。
本申请实施例提供的技术方案中，该基站在利用时频资源发送导频信号时，使得该第一集合中的第一个OFDM符号的发送时刻在该第二集合中的第一个OFDM符号的发送时刻之前。即在整个导频信号的传输过程中，接收设备在接收到第一码字的时频资源之后就可以立即启动该第一码字的译码，从而提前了该第一码字的译码时刻，进而提前了该第二码字的译码时刻。同时，由于该第一码字的MCS指示值大于该第二码字的MCS指示值，因此，该第一码字的译码成功率较高。由于该第二码字的译码要基于该第一码字的译码结果，因此，该第一码字译码成功率较高，可以有效的提高该第二码字的译码成功率。
可选的，该第一解调导频图案指示该第一集合中的第1个OFDM符号的时频资源单元(英文全称：Resource Element，简称：RE)数目大于该第二解调导频图案指示该第二集合中的第1个OFDM符号的RE数目。
本申请实施例提供的技术方案中，该第一码字的第一解调导频图案指示该第一集合中的每一个OFDM符号的RE数目均比对应的第二码字的第二解调导频图案在该第二集合中的每一个OFDM符号的RE数目大。比如该第一解调导频图案在该第一集合中的第二个OFDM符号的RE数目大于该第二解调导频图案在该第二集合中第二个OFDM符号的RE数目；依次可推，该第一解调导频图案在该第一集合中的第三个OFDM符号的RE数目大于该第二解调导频图案在该第二集合中第三个OFDM符号的RE数目等等。
本申请实施例提供的技术方案中，一方面，由于第一码字的MCS指示值较高，第一码字的解调导频图案占用更多的RE(即频域密度较高)有助于提高针对第一码字的信道估计的准确性，提高第一码字的译码成功率，从而提高第二码字的译码成功率。另外一方面，在保证第一码字和第二码字的译码成功率的前提下，第二码字的解调导频图案占用的RE个数较少可以节省解调导频图案的时频资源开销。
可选的，该第一解调导频图案指示该第一集合中至少存在一个OFDM符号的RE数目小于该第一集合中的第1个OFDM符号的RE数目。
本实施例中，该第一集合中的各OFDM符号在按照时域位置由前往后的排序中，该第一解调导频图案指示该第一集合中的各OFDM符号的RE数目可以依次减少，比如，若该第一集合中包含两个OFDM符号，则该第一解调导频图案指示该第一集合中的第二个OFDM符号的RE数目小于该第一解调导频图案指示该第一集合中的第一个OFDM符号的RE数目；若该第一集合中包含三个OFDM符号，则该第一解调导频图案指示该第一集合中的第二个OFDM符号的RE数目小于该第一解调导频图案指示该第一集合中的第一个OFDM符号的RE数目，然后该第一解调导频图案指示该第一集合中的第三个OFDM符号的RE的数目小于该 第一解调导频图案指示该第一集合中的第二个OFDM符号的RE数目。同时，该第一解调导频图案指示该第一集合中的各OFDM符号的RE数目可以仅比该第一解调导频图案指示该第一集合中的第一个OFDM符号的RE数目小即可。具体的设置方式，此处不做限定。
本申请提供的技术方案，可以在保证第一码字的译码正确的情况下，尽量的减少解调导频图案的时频资源开销。
可选的，该第一集合中至少存在一个OFDM符号的RE集合为该第一集合中的第1个OFDM符号的RE集合的真子集；或者，该第一集合中至少存在一个OFDM符号的RE集合与该第一集合中的第1个OFDM符号的RE集合的交集为空集。
在实际应用中，该第一解调导频图案指示的该第一集合中的各OFDM符号上占用的RE均不为空。同时，该第一解调导频图案指示该第一集合中的各OFDM符号的RE集合可以均为该第一集合中的第一个OFDM符号的RE集合的真子集或者该第一解调导频图案指示该第一集合中的各OFDM符号的RE集合均与该第一集合中的第一个OFDM符号的RE集合的交集为空集。比如，若该第一集合中包含两个OFDM符号，则该第一解调导频图案指示该第一集合中的第二个OFDM符号的RE集合为该第一解调导频图案指示该第一集合中的第一个OFDM符号的RE集合的真子集；若该第一集合中包含三个OFDM符号，则该第一解调导频图案指示该第一集合中的第二个OFDM符号的RE集合为该第一解调导频图案指示该第一集合中的第一个OFDM符号的RE集合的真子集，然后该第一解调导频图案指示该第一集合中的第三个OFDM符号的RE集合为该第一解调导频图案指示该第一集合中的第一个OFDM符号的RE集合的真子集。或者，若该第一集合中包含两个OFDM符号，则该第一解调导频图案指示该第一集合中的第二个OFDM符号的RE集合与该第一解调导频图案指示该第一集合中的第一个OFDM符号的RE集合的交集为空集；若该第一集合中包含三个OFDM符号，则该第一解调导频图案指示该第一集合中的第二个OFDM符号的RE集合与该第一解调导频图案指示该第一集合中的第一个OFDM符号的RE集合的交集为空集，然后该第一解调导频图案指示该第一集合中的第三个OFDM符号的RE集合与该第一解调导频图案指示该第一集合中的第一个OFDM符号的RE集合的交集为空集。
本申请提供的技术方案中，该第一解调导频图案指示的该第一集合中的各OFDM符号的RE的频域位置保持一致适用于信道频率选择性较低的情况，各OFDM符号的RE的频域位置一致可以降低接收设备进行信道插值的复杂度；而该第一解调导频图案指示的该第一集合中的各OFDM符号的RE的频域位置进行差异性的排布适用于信道频率选择性较高的情况，此时可以保证接收设备在尽可能多的频域位置都进行信道估计，提供更准确频域插值结果，从而提升信道估计的准确度。
可选的，在第二解调导频图案中，该第二解调导频图案指示该第二集合中至少存在一个OFDM符号的RE数目小于第1个OFDM符号的RE数目。
本实施例中，该第二集合中的各OFDM符号在按照时域位置由前往后的排序中，该第二解调导频图案指示该第二集合中的各OFDM符号的RE数目可以依次减少，比如，若该第二集合中包含两个OFDM符号，则该第二解调导频图案指示该第二集合中的第二个OFDM符号的RE数目小于该第二解调导频图案指示该第二集合中的第一个OFDM符号的RE数目；若 该第二集合中包含三个OFDM符号，则该第二解调导频图案指示该第二集合中的第二个OFDM符号的RE数目小于该第一解调导频图案指示该第二集合中的第一个OFDM符号的RE数目，然后该第二解调导频图案指示该第二集合中的第三个OFDM符号的RE数目小于该第二解调导频图案指示该第二集合中的第二个OFDM符号的RE数目。同时，该第二解调导频图案指示该第二集合中的各OFDM符号的RE数目可以仅比该第二解调导频图案指示该第二集合中的第一个OFDM符号的RE数目小即可。具体的设置方式，此处不做限定。
本申请提供的技术方案，可以在保证第二码字的译码正确的情况下，尽量的减少解调导频图案的时频资源开销。
可选的，该第二解调导频图案中，该第二解调导频图案指示该第二集合中至少存在一个OFDM符号的RE集合为该第二集合中的第1个OFDM符号的RE集合的真子集；或者，该第二解调导频图案指示该第二集合中至少存在一个OFDM符号的RE集合与该第二集合中第1个OFDM符号上占用的RE集合的交集为空集。
在实际应用中，该第二解调导频图案指示的该第二集合中的各OFDM符号的RE均不为空。同时，该第二解调导频图案指示该第二集合中的各OFDM符号的RE集合可以均为该第二集合中的第一个OFDM符号的RE集合的真子集或者该第二解调导频图案指示该第二集合中的各OFDM符号的RE集合均与该第二集合中的第一个OFDM符号的RE集合的交集为空集。比如，若该第二集合中包含两个OFDM符号，则该第二解调导频图案指示该第二集合中的第二个OFDM符号的RE集合为该第二解调导频图案指示该第二集合中的第一个OFDM符号的RE集合的真子集；若该第二集合中包含三个OFDM符号，则该第二解调导频图案指示该第二集合中的第二个OFDM符号的RE集合为该第二解调导频图案指示该第二集合中的第一个OFDM符号的RE集合的真子集，然后该第二解调导频图案指示该第二集合中的第三个OFDM符号的RE集合为该第二解调导频图案指示该第二集合中的第一个OFDM符号的RE集合的真子集。或者，若该第二集合中包含两个OFDM符号，则该第二解调导频图案指示该第二集合中的第二个OFDM符号的RE集合与该第二解调导频图案指示该第二集合中的第一个OFDM符号的RE集合的交集为空集；若该第二集合中包含三个OFDM符号，则该第二解调导频图案指示该第二集合中的第二个OFDM符号的RE集合与该第二解调导频图案指示该第二集合中的第一个OFDM符号的RE集合的交集为空集，然后该第二解调导频图案指示该第二集合中的第三个OFDM符号的RE集合与该第二解调导频图案指示该第二集合中的第一个OFDM符号的RE集合的交集为空集。
本申请提供的技术方案中，该第二解调导频图案指示的该第二集合中的各OFDM符号的RE的频域位置保持一致适用于信道频率选择性较低的情况，各OFDM符号的RE的频域位置一致可以降低接收设备进行信道插值的复杂度；而该第二解调导频图案指示的该第二集合中的各OFDM符号的RE的频域位置进行差异性的排布适用于信道频率选择性较高的情况，此时可以保证接收设备在尽可能多的频域位置都进行信道估计，提供更准确的频域插值结果，从而提升信道估计的准确度。
可选的，在该第二解调导频图案中，该第二解调导频图案在该第二集合中至少存在一个OFDM符号的RE数目大于该第二集合中的第1个OFDM符号的RE数目。
本实施例中，该第二集合中的各OFDM符号在按照时域位置由前往后的排序中，该第二解调导频图案指示该第一集合中的各OFDM符号的RE数目可以依次增加，比如，若该第二集合包括两个OFDM符号，则该第二解调导频图案指示该第二集合中的第二个OFDM符号的RE数目大于该第二解调导频图案指示该第二集合中的第一个OFDM符号的RE数目；若该第二集合包括三个OFDM符号，则该第二解调导频图案指示该第二集合中的第二个OFDM符号的RE数目大于该第二解调导频图案指示该第二集合中的第一个OFDM符号的RE数目，然后该第二解调导频图案指示该第二集合中的第三个OFDM符号的RE数目大于该第二解调导频图案指示该第二集合中的第二个OFDM符号的RE数目。同时，该第二解调导频图案指示该第二集合中的各OFDM符号的RE数目可以仅比该第二解调导频图案指示该第二集合中的第一个OFDM符号的RE数目大即可。具体的设置方式，此处不做限定。
本申请提供的技术方案，可以提高第二码字的译码正确率。例如，若第二码字分为多个码块(Code Block)进行传输，在重传第二个码字时，若只重传第二码字的某个码块，并且是在与初传该码块相同或相邻的OFDM符号上重传该码块，则本申请提供的技术方案可以提高重传的该码块的译码正确率。
可选的，该基站还可以发送导频配置信息，该导频配置信息用于指示在该第二集合中，该第二集合中的各OFDM符号按照发送时刻由早至晚的排序，该第二解调导频图案指示各OFDM符号的RE数目增加或者减少。
本申请提供的技术方案，可以使接收设备以正确的解调导频图案接收导频信号。
可选的，该第一集合中的各OFDM符号内采用长度为4的正交码进行频域码分复用；该第二集合中的各OFDM符号内采用长度为4的正交码进行频域码分复用。
本申请提供的技术方案中，该第一集合和该第二集合中各自的各OFDM符号内均采用长度为4的正交码进行频域码分复用可以有效的增加复用的用户数，或者对于增加单个用户传输时，可以同时传输的数据层数。
第二方面，本申请实施例提供一种数据处理方法，包括：
接收设备获取传输时间单元内的解调导频图案，该解调导频图案包括第一码字的第一解调导频图案和第二码字的第二解调导频图案，该第一解调导频图案指示第一集合中各OFDM符号的时频资源，该第二解调导频图案指示第二集合中各OFDM符号的时频资源，该第一码字的调制编码MCS指示值大于该第二码字的MCS指示值；该接收设备按照该解调导频图案接收导频信号，该导频信号由基站按照该解调导频图映射在时频资源上后发送，其中，该基站发送时频资源时，该第一集合中的第1个OFDM符号的发送时刻在该第二集合中的第1个OFDM符号的发送时刻之前，该第一集合中的第1个OFDM符号为该第一集合中的发送时刻最早的OFDM符号，该第二集合中的第1个OFDM符号为该第二集合中的发送时刻最早的OFDM符号。
本申请实施例提供的技术方案中，该基站在利用时频资源发送导频信号时，使得该第一集合中的第一个OFDM符号的发送时刻在该第二集合中的第一个OFDM符号的发送时刻之前。即在整个导频信号的传输过程中，接收设备在接收到第一码字的时频资源之后就可以立即启动该第一码字的译码，从而提前了该第一码字的译码时刻，进而提前了该第二码字 的译码时刻。同时，由于该第一码字的MCS指示值大于该第二码字的MCS指示值，因此，该第一码字的译码成功率较高。由于该第二码字的译码要基于该第一码字的译码结果，因此，该第一码字译码成功率较高，可以有效的提高该第二码字的译码成功率。
可选的，该第一解调导频图案指示该第一集合中的第1个OFDM符号的时频资源单元(英文全称：Resource Element，简称：RE)数目大于该第二解调导频图案指示该第二集合中的第1个OFDM符号的RE数目。
本申请实施例提供的技术方案中，该第一码字的第一解调导频图案指示该第一集合中的每一个OFDM符号上占用的RE数目均比对应的第二码字的第二解调导频图案在该第二集合中的每一个OFDM符号的RE数目大。比如，若该第一集合包括两个OFDM符号，该第一解调导频图案在该第一集合中的第二个OFDM符号的RE数目大于该第二解调导频图案在该第二集合中第二个OFDM符号的RE数目；依次可推，若该第一集合包括三个OFDM符号，该第一解调导频图案在该第一集合中的第二个OFDM符号的RE数目大于该第二解调导频图案在该第二集合中第二个OFDM符号的RE数目，该第一解调导频图案在该第一集合中的第三个OFDM符号的RE数目大于该第二解调导频图案在该第二集合中第三个OFDM符号的RE数目等等。
本申请实施例提供的技术方案中，一方面，由于第一码字的MCS指示值较高，第一码字的解调导频图案占用更多的RE(即频域密度较高)有助于提高针对第一码字的信道估计的准确性，提高第一码字的译码成功率，从而提高第二码字的译码成功率。另外一方面，在保证第一码字和第二码字的译码成功率的前提下，第二码字的解调导频图案占用的RE个数较少可以节省解调导频图案的时频资源开销。
可选的，该第一解调导频图案指示该第一集合中至少存在一个OFDM符号的RE数目小于该第一集合中的第1个OFDM符号的RE数目。
本实施例中，该第一集合中的各OFDM符号在按照时域位置由前往后的排序中，该第一解调导频图案指示该第一集合中的各OFDM符号的RE数目可以依次减少，比如，若该第一集合包括两个OFDM符号，该第一解调导频图案指示该第一集合中的第二个OFDM符号的RE数目小于该第一解调导频图案指示该第一集合中的第一个OFDM符号的RE数目；若该第一集合包括三个OFDM符号，该第一解调导频图案指示该第一集合中的第二个OFDM符号的RE数目小于该第一解调导频图案指示该第一集合中的第一个OFDM符号的RE数目，然后该第一解调导频图案指示该第一集合中的第三个OFDM符号的RE的数目小于该第一解调导频图案指示该第一集合中的第二个OFDM符号的RE数目。同时，该第一解调导频图案指示该第一集合中的各OFDM符号的RE数目可以仅比该第一解调导频图案指示该第一集合中的第一个OFDM符号的RE数目小即可。具体的设置方式，此处不做限定。
本申请提供的技术方案，可以在保证第一码字的译码正确的情况下，尽量的减少解调导频图案的时频资源开销。
可选的，该第一集合中至少存在一个OFDM符号的RE集合为该第一集合中的第1个OFDM符号的RE集合的真子集；或者，该第一集合中至少存在一个OFDM符号的RE集合与该第一集合中的第1个OFDM符号的RE集合的交集为空集。
在实际应用中，该第一解调导频图案指示的该第一集合中的各OFDM符号上占用的RE均不为空。同时，该第一解调导频图案指示该第一集合中的各OFDM符号的RE集合可以均为该第一集合中的第一个OFDM符号的RE集合的真子集或者该第一解调导频图案指示该第一集合中的各OFDM符号的RE集合均与该第一集合中的第一个OFDM符号的RE集合的交集为空集。比如，若该第一集合中包含两个OFDM符号，则该第一解调导频图案指示该第一集合中的第二个OFDM符号的RE集合为该第一解调导频图案指示该第一集合中的第一个OFDM符号的RE集合的真子集；若该第一集合中包含三个OFDM符号，则该第一解调导频图案指示该第一集合中的第二个OFDM符号的RE集合为该第一解调导频图案指示该第一集合中的第一个OFDM符号的RE集合的真子集，然后该第一解调导频图案指示该第一集合中的第三个OFDM符号的RE集合为该第一解调导频图案指示该第一集合中的第一个OFDM符号的RE集合的真子集。或者，若该第一集合中包含两个OFDM符号，则该第一解调导频图案指示该第一集合中的第二个OFDM符号的RE集合与该第一解调导频图案指示该第一集合中的第一个OFDM符号的RE集合的交集为空集；若该第一集合中包含三个OFDM符号，则该第一解调导频图案指示该第一集合中的第二个OFDM符号的RE集合与该第一解调导频图案指示该第一集合中的第一个OFDM符号的RE集合的交集为空集，然后该第一解调导频图案指示该第一集合中的第三个OFDM符号的RE集合与该第一解调导频图案指示该第一集合中的第一个OFDM符号的RE集合的交集为空集。
本申请提供的技术方案中，该第一解调导频图案指示的该第一集合中的各OFDM符号的RE的频域位置保持一致适用于信道频率选择性较低的情况，各OFDM符号的RE的频域位置一致可以降低接收设备进行信道插值的复杂度；而该第一解调导频图案指示的该第一集合中的各OFDM符号的RE的频域位置进行差异性的排布适用于信道频率选择性较高的情况，此时可以保证接收设备在尽可能多的频域位置都进行信道估计，提供更准确频域插值结果，从而提升信道估计的准确度。
可选的，在第二解调导频图案中，该第二解调导频图案指示该第二集合中至少存在一个OFDM符号的RE数目小于第1个OFDM符号的RE数目。
本实施例中，该第二集合中的各OFDM符号在按照时域位置由前往后的排序中，该第二解调导频图案指示该第二集合中的各OFDM符号的RE数目可以依次减少，比如，若该第二集合中包含两个OFDM符号，则该第二解调导频图案指示该第二集合中的第二个OFDM符号的RE数目小于该第二解调导频图案指示该第二集合中的第一个OFDM符号的RE数目；若该第二集合中包含三个OFDM符号，则该第二解调导频图案指示该第二集合中的第二个OFDM符号的RE数目小于该第一解调导频图案指示该第二集合中的第一个OFDM符号的RE数目，然后该第二解调导频图案指示该第二集合中的第三个OFDM符号的RE数目小于该第二解调导频图案指示该第二集合中的第二个OFDM符号的RE数目。同时，该第二解调导频图案指示该第二集合中的各OFDM符号的RE数目可以仅比该第二解调导频图案指示该第二集合中的第一个OFDM符号的RE数目小即可。具体的设置方式，此处不做限定。
本申请提供的技术方案，可以在保证第二码字的译码正确的情况下，尽量的减少解调导频图案的时频资源开销。
可选的，该第二解调导频图案中，该第二解调导频图案指示该第二集合中至少存在一个OFDM符号的RE集合为该第二集合中的第1个OFDM符号的RE集合的真子集；或者，该第二解调导频图案指示该第二集合中至少存在一个OFDM符号的RE集合与该第二集合中第1个OFDM符号上占用的RE集合的交集为空集。
在实际应用中，该第二解调导频图案指示的该第二集合中的各OFDM符号的RE均不为空。同时，该第二解调导频图案指示该第二集合中的各OFDM符号的RE集合可以均为该第二集合中的第一个OFDM符号的RE集合的真子集或者该第二解调导频图案指示该第二集合中的各OFDM符号的RE集合均与该第二集合中的第一个OFDM符号的RE集合的交集为空集。比如，若该第二集合中包含两个OFDM符号，则该第二解调导频图案指示该第二集合中的第二个OFDM符号的RE集合为该第二解调导频图案指示该第二集合中的第一个OFDM符号的RE集合的真子集；若该第二集合中包含三个OFDM符号，则该第二解调导频图案指示该第二集合中的第二个OFDM符号的RE集合为该第二解调导频图案指示该第二集合中的第一个OFDM符号的RE集合的真子集，然后该第二解调导频图案指示该第二集合中的第三个OFDM符号的RE集合为该第二解调导频图案指示该第二集合中的第一个OFDM符号的RE集合的真子集。或者，若该第二集合中包含两个OFDM符号，则该第二解调导频图案指示该第二集合中的第二个OFDM符号的RE集合与该第二解调导频图案指示该第二集合中的第一个OFDM符号的RE集合的交集为空集；若该第二集合中包含三个OFDM符号，则该第二解调导频图案指示该第二集合中的第二个OFDM符号的RE集合与该第二解调导频图案指示该第二集合中的第一个OFDM符号的RE集合的交集为空集，然后该第二解调导频图案指示该第二集合中的第三个OFDM符号的RE集合与该第二解调导频图案指示该第二集合中的第一个OFDM符号的RE集合的交集为空集。
本申请提供的技术方案中，该第二解调导频图案指示的该第二集合中的各OFDM符号的RE的频域位置保持一致适用于信道频率选择性较低的情况，各OFDM符号的RE的频域位置一致可以降低接收设备进行信道插值的复杂度；而该第二解调导频图案指示的该第二集合中的各OFDM符号的RE的频域位置进行差异性的排布适用于信道频率选择性较高的情况，此时可以保证接收设备在尽可能多的频域位置都进行信道估计，提供更准确的频域插值结果，从而提升信道估计的准确度。
可选的，在该第二解调导频图案中，该第二解调导频图案在该第二集合中至少存在一个OFDM符号的RE数目大于该第二集合中的第1个OFDM符号的RE数目。
本实施例中，该第二集合中的各OFDM符号在按照时域位置由前往后的排序中，该第二解调导频图案指示该第一集合中的各OFDM符号的RE数目可以依次增加，比如，若该第二集合包括两个OFDM符号，则该第二解调导频图案指示该第二集合中的第二个OFDM符号的RE数目大于该第二解调导频图案指示该第二集合中的第一个OFDM符号的RE数目；若该第二集合包括三个OFDM符号，则该第二解调导频图案指示该第二集合中的第二个OFDM符号的RE数目大于该第二解调导频图案指示该第二集合中的第一个OFDM符号的RE数目，然后该第二解调导频图案指示该第二集合中的第三个OFDM符号的RE数目大于该第二解调导频图案指示该第二集合中的第二个OFDM符号的RE数目。同时，该第二解调导频图案指示 该第二集合中的各OFDM符号的RE数目可以仅比该第二解调导频图案指示该第二集合中的第一个OFDM符号的RE数目大即可。具体的设置方式，此处不做限定。
本申请提供的技术方案，可以提高第二码字的译码正确率。例如，若第二码字分为多个码块(Code Block)进行传输，在重传第二个码字时，若只重传第二码字的某个码块，并且是在与初传该码块相同或相邻的OFDM符号上重传该码块，则本申请提供的技术方案可以提高重传的该码块的译码正确率。
可选的，该接收设备还可以接收基站发送的导频配置信息，该导频配置信息该第二集合中，该第二集合中的各OFDM符号按照发送时刻由早至晚的排序，该第二解调导频图案指示各OFDM符号的RE数目增加或者减少。
本申请提供的技术方案，该接收设备可以以正确的解调导频图案接收导频信号。
可选的，该第一集合中的各OFDM符号内采用长度为4的正交码进行频域码分复用；该第二集合中的各OFDM符号内采用长度为4的正交码进行频域码分复用。
本申请提供的技术方案中，该第一集合和该第二集合中各自的各OFDM符号内均采用长度为4的正交码进行频域码分复用可以有效的增加复用的用户数，或者对于增加单个用户传输时，可以同时传输的数据层数。
第三方面，本申请提供一种基站，该基站具有实现上述方法中基站的功能。该功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块。
一种可能实现方式中，该基站包括：
处理单元，用于获取传输时间单元内的解调导频图案，该解调导频图案包括第一码字的第一解调导频图案和第二码字的第二解调导频图案，该第一解调导频图案指示第一集合中各正交频分复用OFDM符号的时频资源，该第二解调导频图案指示第二集合中的各OFDM符号的时频资源，该第一码字的调制编码MCS指示值大于该第二码字的MCS指示值；
发送模块，用于按照该解调导频图案将导频信号映射在时频资源上，发送该导频信号，其中，该第一集合中的第1个OFDM符号的发送时刻在该第二集合中的第1个OFDM符号的发送时刻之前，该第一集合中的第1个OFDM符号为该第一集合中的发送时刻最早的OFDM符号，该第二集合中的第1个OFDM符号为该第二集合中的发送时刻最早的OFDM符号。
另一种可能实现方式中，该基站包括：
收发器，处理器以及总线；
该收发器与该处理器通过该总线相连；
该处理器，执行如下步骤：
获取传输时间单元内的解调导频图案，该解调导频图案包括第一码字的第一解调导频图案和第二码字的第二解调导频图案，该第一解调导频图案指示第一集合中各正交频分复用OFDM符号的时频资源，该第二解调导频图案指示第二集合中的各OFDM符号的时频资源，该第一码字的调制编码MCS指示值大于该第二码字的MCS指示值；
该收发器，执行如下步骤：
按照该解调导频图案将导频信号映射在时频资源上，发送该导频信号，其中，该第一集合中的第1个OFDM符号的发送时刻在该第二集合中的第1个OFDM符号的发送时刻之前，该第一集合中的第1个OFDM符号为该第一集合中的发送时刻最早的OFDM符号，该第二集合中的第1个OFDM符号为该第二集合中的发送时刻最早的OFDM符号。
第四方面，本申请提供一种接收设备，该接收设备具有实现上述方法中接收设备的功能。该功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块。
一种可能实现方式中，该接收设备包括：
处理模块，用于获取传输时间单元内的解调导频图案，所述解调导频图案包括第一码字的第一解调导频图案和第二码字第二解调导频图案，所述第一解调导频图案指示第一集合中各正交频分复用OFDM符号的时频资源，所述第二解调导频图案指示第二集合中各OFDM符号的时频资源，所述第一码字的调制编码MCS指示值大于所述第二码字的MCS指示值；
接收模块，用于按照所述解调导频图案接收导频信号，所述导频信号由基站按照所述解调导频图映射在时频资源上后发送，其中，所述第一集合中的第1个OFDM符号的发送时刻在所述第二集合中的第1个OFDM符号的发送时刻之前，所述第一集合中的第1个OFDM符号为所述第一集合中的发送时刻最早的OFDM符号。
另一种可能实现方式中，该接收设备包括：
收发器，处理器以及总线；
该收发器与该处理器通过该总线相连；
该处理器，执行如下步骤：
获取传输时间单元内的解调导频图案，所述解调导频图案包括第一码字的第一解调导频图案和第二码字第二解调导频图案，所述第一解调导频图案指示第一集合中各正交频分复用OFDM符号的时频资源，所述第二解调导频图案指示第二集合中各OFDM符号的时频资源，所述第一码字的调制编码MCS指示值大于所述第二码字的MCS指示值；
该收发器，执行如下步骤：
按照所述解调导频图案接收导频信号，所述导频信号由基站按照所述解调导频图映射在时频资源上后发送，其中，所述第一集合中的第1个OFDM符号的发送时刻在所述第二集合中的第1个OFDM符号的发送时刻之前，所述第一集合中的第1个OFDM符号为所述第一集合中的发送时刻最早的OFDM符号。
第五方面，本申请提供一种数据处理方法，包括：
该基站在发送导频信号之前，确定秩指示(英文全称：Rank Indication，简称：RI)和导频配置信息，并根据该导频配置信息从该RI对应的解调导频图案集合中确定传输时间单元内的目标解调导频图案，该解调导频图案集合中包括至少两种解调导频图案，该解调导频图案集合中的各解调导频图案各指示一种正交频分复用OFDM符号集合中各OFDM符号的时频资源，且该解调导频图案集合中的各解调导频图案指示的各OFDM符号的时频资源单元RE的数目不同以及该解调导频图案集合中的各解调导频图案采用的正交码图案不 同，该正交码图案包括频域一维扩频图案和时频两维扩频图案，该至少两种解调导频图案是同一种子帧类型下的解调导频图案；然后该基站按照该目标导频图案将导频信号映射在时频资源上，并发送该导频信号、该导频配置信息和RI。
本实施例中，该基站在获取该目标解调导频图案时，还可以先获取导频配置信息对应的解调导频图案集合，然后再根据该RI从该导频配置信息对应的解调导频图案集合里确定该目标解调导频图案，实际应用中，具体采用何种方式，此处不做限定。
本实施例中，该频域一维扩频图案指的是正交码在一个OFDM符号内在频域上进行扩频的图案。例如长度为N的正交码，频域移位扩频图案指的是在同一个OFDM符号内，正交码在连续的或者不连续的N个RE上进行码分复用。N是正整数，例如2、4、8。该时频两维扩频图案指的是正交码在大于一个OFDM符号上进行扩频的图案，包括时域扩频和频域扩频。例如，长度为N的正交码在2个OFDM符号上进行扩频，其中，在每个OFDM符号上的4个连续或者不连续的RE上进行频域扩频，在2个OFDM符号上进行时域扩频。本申请提供的技术方案中，该RI对应的解调导频图案集合中包含的各解调导频图案采用频域一维扩频图案和时频两维扩频图案的正效码图案，可以有效增加扩频增益，从而提高数据检测性能。同时，该RI对应的解调导频图案集合中的各解调导频图案其所占用的RE的数目不同，可以在增加复用用户数的情况下，保证信道估计性能。
可选的，该目标解调导频图案指示的OFDM符号集合中包括N组OFDM符号，该N组OFDM符号在按照发送时刻由早至晚的排序中，该目标解调导频图案指示的该OFDM符号集合中至少存在一个OFDM符号RE数目小于该目标解调导频图案指示的该OFDM符号集合中的第1组OFDM符号的RE数目，该目标解调导频图案指示的OFDM符号集合中的各组OFDM符号包括至少一个OFDM符号，该N为正整数。
本实施例中，该OFDM符号集合中的各组OFDM符号在按照时域位置由前往后的排序中，该目标解调导频图案指示该OFDM符号集合中的各组OFDM符号的RE数目可以依次减少，比如，若该OFDM符号集合中包含两组OFDM符号，则该目标解调导频图案指示的该OFDM符号集合中的第二组OFDM符号的RE数目小于该目标解调导频图案指示的该OFDM符号集合中的第一组OFDM符号的RE数目；若该OFDM符号集合中包含三组OFDM符号，则该目标解调导频图案指示的该OFDM符号集合中的第二组OFDM符号的RE数目小于该目标解调导频图案指示的该OFDM符号集合中的第一组OFDM符号的RE数目，然后该目标解调导频图案指示的该OFDM符号集合中的第三组OFDM符号的RE数目小于该目标解调导频图案指示的该OFDM符号集合中的第二组OFDM符号的RE数目。同时，该目标解调导频图案指示的该OFDM符号集合中的各组OFDM符号的RE数目可以仅比该目标解调导频图案指示的该OFDM符号集合中的第一组OFDM符号的RE数目小即可。具体的设置方式，此处不做限定。
本申请提供的技术方案中，可以在保证译码正确的情况下，尽量的减少目标解调导频图案的时频资源开销。
可选的，该目标解调导频图案指示的该OFDM符号集合中至少存在一组OFDM符号的RE集合与该目标解调导频图案指示的该OFDM符号集合中的第1组OFDM符号的RE集合的交集为空集；或，该目标解调导频图案指示的该OFDM符号集合中至少存在一组OFDM符号的RE 集合为该目标解调导频图案指示的该OFDM符号集合中的第1组OFDM符号的RE集合的真子集。
在实际应用中，该目标解调导频图案指示的该OFDM符号集合中的各组OFDM符号的RE均不为空。同时，该目标解调导频图案指示的该OFDM符号集合中的各组OFDM符号的RE集合可以均为该目标解调导频图案指示的该OFDM符号集合中的第一组OFDM符号的RE集合的真子集或者该目标解调导频图案指示的该OFDM符号集合中的各组OFDM符号的RE集合可以均与该目标解调导频图案指示的该OFDM符号集合中的第一组OFDM符号的RE集合的交集为空集。比如，若该OFDM符号集合中包含两组OFDM符号，则该目标解调导频图案指示的该OFDM符号集合中的第二组OFDM符号的RE集合为该目标解调导频图案指示的该OFDM符号集合中的第一组OFDM符号的RE集合的真子集；若该OFDM符号集合中包含三组OFDM符号，则该目标解调导频图案指示的该OFDM符号集合中的第二组OFDM符号的RE集合为该目标解调导频图案指示的该OFDM符号集合中的第一组OFDM符号的RE集合的真子集，然后该目标解调导频图案指示的该OFDM符号集合中的第三组OFDM符号的RE集合为该目标解调导频图案指示的该OFDM符号集合中的第一组OFDM符号的RE集合的真子集。或者，若该OFDM符号集合中包含两组OFDM符号，则该目标解调导频图案指示的该OFDM符号集合中的第二组OFDM符号的RE集合与该目标解调导频图案指示的该OFDM符号集合中的第一组OFDM符号的RE集合的交集为空集；若该OFDM符号集合中包含三组OFDM符号，则该目标解调导频图案指示的该OFDM符号集合中的第二组OFDM符号的RE集合与该目标解调导频图案指示的该OFDM符号集合中的第一组OFDM符号的RE集合的交集为空集，然后该目标解调导频图案指示的该OFDM符号集合中的第三组OFDM符号的RE集合与该目标解调导频图案指示的该OFDM符号集合中的第一组OFDM符号的RE集合的交集为空集。
本申请提供的技术方案中，该目标解调导频图案指示的各组OFDM符号的RE的频域位置保持一致适用于信道频率选择性较低的情况，各OFDM符号的RE的频域位置一致可以降低接收设备进行信道插值的复杂度；而该目标解调导频图案指示的各OFDM符号的RE的频域位置进行差异性的排布适用于信道频率选择性较高的情况，此时可以保证接收设备在尽可能多的频域位置都进行信道估计，提供更准确的频域插值结果，从而提升信道估计的准确度。
在实际应用中，该RI不同，该解调导频图案集合中的导频图案有不同的情况，具体情况包括但不限于如下几种可能实现方式：
一种可能实现方式中，当该RI等于1或者2时，该解调导频图案集合中的解调导频图案的正交码图案包括各组OFDM符号内采用长度为2的正交码进行频域码分复用，每组OFDM符号包括一个OFDM符号；和，各组OFDM符号内采用长度为4的正交码进行频域码分复用，每组OFDM符号包括一个OFDM符号；和，各组OFDM符号内采用长度为8的正交码进行频域和时域的码分复用，其中该频域码分复用长度为4，该时域码分复用长度为2，每组OFDM符号包括时域上连续的2个OFDM符号。
另一种可能实现方式中，当该RI等于3或者4时，该解调导频图案集合中的解调导频图案的正交码图案包括各组OFDM符号内采用长度为4的正交码进行频域码分复用，每组 OFDM符号包括一个OFDM符号；和，各组OFDM符号内采用长度为8的正交码进行频域和时域的码分复用，其中该频域码分复用长度为4，该时域码分复用长度为2每组OFDM符号包括时域上连续的2个OFDM符号。
另一种可能实现方式中，当该RI属于集合{5，6，7，8}时，该解调导频图案集合中的解调导频图案的正交码图案包括各组OFDM符号内采用长度为8的正交码进行频域和时域的码分复用，其中该频域码分复用长度为4，该时域码分复用长度为2，每组OFDM符号包括时域上连续的2个OFDM符号；和，各组OFDM符号内的第一个OFDM符号采用长度4的正交码进行频域码分复用，在第二OFDM符号上采用长度4的正交码进行频域码分复用，每组OFDM符号包括时域上连续的2个OFDM符号。
在本申请实施例提供的技术方案中，该RI对应的不同的至少两种的解调导频图案可以有效增加扩频增益，从而提高数据检测性能。同时，该RI对应的解调导频图案集合中的各解调导频图案其所占用的RE的数目不同，可以在增加复用的用户数的情况下，保证信道估计性能。
第六方面，本申请提供一种数据处理方法，包括：
接收设备获取传输时间单元内的目标解调导频图案，该目标解调导频图由基站根据导频配置信息从秩指示RI对应的解调导频图案集合中确定，该解调导频图案集合中包括至少两种解调导频图案，该解调导频图案集合中的各解调导频图案各指示一种正交频分复用OFDM符号集合中各OFDM符号的时频资源，且该解调导频图案集合中的各解调导频图案指示的各OFDM符号的时频资源单元RE的数目不同以及该解调导频图案集合中的各解调导频图案采用的正交码图案不同，该正交码图案包括频域一维扩频图案和时频两维扩频图案，该至少两种解调导频图案是同一种子帧类型下的解调导频图案；该接收设备按照该目标解调导频图案接收导频信号，该导频信号由该基站按照该目标解调导频图案映射在时频资源上后发送。
本实施例中，该频域一维扩频图案指的是正交码在一个OFDM符号内在频域上进行扩频的图案。例如长度为N的正交码，频域移位扩频图案指的是在同一个OFDM符号内，正交码在连续的或者不连续的N个RE上进行码分复用。N是正整数，例如2、4、8。该时频两维扩频图案指的是正交码在大于一个OFDM符号上进行扩频的图案，包括时域扩频和频域扩频。例如，长度为N的正交码在2个OFDM符号上进行扩频，其中，在每个OFDM符号上的4个连续或者不连续的RE上进行频域扩频，在2个OFDM符号上进行时域扩频。
本申请提供的技术方案中，该RI对应的解调导频图案集合中包含的各解调导频图案采用频域一维扩频图案和时频两维扩频图案的正效码图案，可以有效增加扩频增益，从而提高数据检测性能。同时，该RI对应的解调导频图案集合中的各解调导频图案其所占用的RE的数目不同，可以在增加复用用户数的情况下，保证信道估计性能。
可选的，该目标解调导频图案指示的OFDM符号集合中包括N组OFDM符号，该N组OFDM符号在按照发送时刻由早至晚的排序中，该目标解调导频图案指示的该OFDM符号集合中至少存在一个OFDM符号RE数目小于该目标解调导频图案指示的该OFDM符号集合中的第1组OFDM符号的RE数目，该目标解调导频图案指示的OFDM符号集合中的各组OFDM符号包 括至少一个OFDM符号，该N为正整数。
本实施例中，该OFDM符号集合中的各组OFDM符号在按照时域位置由前往后的排序中，该目标解调导频图案指示该OFDM符号集合中的各组OFDM符号的RE数目可以依次减少，比如，若该OFDM符号集合中包含两组OFDM符号，则该目标解调导频图案指示的该OFDM符号集合中的第二组OFDM符号的RE数目小于该目标解调导频图案指示的该OFDM符号集合中的第一组OFDM符号的RE数目；若该OFDM符号集合中包含三组OFDM符号，则该目标解调导频图案指示的该OFDM符号集合中的第二组OFDM符号的RE数目小于该目标解调导频图案指示的该OFDM符号集合中的第一组OFDM符号的RE数目，然后该目标解调导频图案指示的该OFDM符号集合中的第三组OFDM符号的RE数目小于该目标解调导频图案指示的该OFDM符号集合中的第二组OFDM符号的RE数目。同时，该目标解调导频图案指示的该OFDM符号集合中的各组OFDM符号的RE数目可以仅比该目标解调导频图案指示的该OFDM符号集合中的第一组OFDM符号的RE数目小即可。具体的设置方式，此处不做限定。
本申请提供的技术方案中，可以在保证译码正确的情况下，尽量的减少目标解调导频图案的时频资源开销。
可选的，该目标解调导频图案指示的该OFDM符号集合中至少存在一组OFDM符号的RE集合与该目标解调导频图案指示的该OFDM符号集合中的第1组OFDM符号的RE集合的交集为空集；或，该目标解调导频图案指示的该OFDM符号集合中至少存在一组OFDM符号的RE集合为该目标解调导频图案指示的该OFDM符号集合中的第1组OFDM符号的RE集合的真子集。
在实际应用中，该目标解调导频图案指示的该OFDM符号集合中的各组OFDM符号的RE均不为空。同时，该目标解调导频图案指示的该OFDM符号集合中的各组OFDM符号的RE集合可以均为该目标解调导频图案指示的该OFDM符号集合中的第一组OFDM符号的RE集合的真子集或者该目标解调导频图案指示的该OFDM符号集合中的各组OFDM符号的RE集合可以均与该目标解调导频图案指示的该OFDM符号集合中的第一组OFDM符号的RE集合的交集为空集。比如，若该OFDM符号集合中包含两组OFDM符号，则该目标解调导频图案指示的该OFDM符号集合中的第二组OFDM符号的RE集合为该目标解调导频图案指示的该OFDM符号集合中的第一组OFDM符号的RE集合的真子集；若该OFDM符号集合中包含三组OFDM符号，则该目标解调导频图案指示的该OFDM符号集合中的第二组OFDM符号的RE集合为该目标解调导频图案指示的该OFDM符号集合中的第一组OFDM符号的RE集合的真子集，然后该目标解调导频图案指示的该OFDM符号集合中的第三组OFDM符号的RE集合为该目标解调导频图案指示的该OFDM符号集合中的第一组OFDM符号的RE集合的真子集。或者，若该OFDM符号集合中包含两组OFDM符号，则该目标解调导频图案指示的该OFDM符号集合中的第二组OFDM符号的RE集合与该目标解调导频图案指示的该OFDM符号集合中的第一组OFDM符号的RE集合的交集为空集；若该OFDM符号集合中包含三组OFDM符号，则该目标解调导频图案指示的该OFDM符号集合中的第二组OFDM符号的RE集合与该目标解调导频图案指示的该OFDM符号集合中的第一组OFDM符号的RE集合的交集为空集，然后该目标解调导频图案指示的该OFDM符号集合中的第三组OFDM符号的RE集合与该目标解调导频图案指示的该OFDM 符号集合中的第一组OFDM符号的RE集合的交集为空集。
本申请提供的技术方案中，该目标解调导频图案指示的各组OFDM符号的RE的频域位置保持一致适用于信道频率选择性较低的情况，各OFDM符号的RE的频域位置一致可以降低接收设备进行信道插值的复杂度；而该目标解调导频图案指示的各OFDM符号的RE的频域位置进行差异性的排布适用于信道频率选择性较高的情况，此时可以保证接收设备在尽可能多的频域位置都进行信道估计，提供更准确的频域插值结果，从而提升信道估计的准确度。
在实际应用中，该RI不同，该解调导频图案集合中的导频图案有不同的情况，具体情况包括但不限于如下几种可能实现方式：
一种可能实现方式中，当该RI等于1或者2时，该解调导频图案集合中的解调导频图案的正交码图案包括各组OFDM符号内采用长度为2的正交码进行频域码分复用，每组OFDM符号包括一个OFDM符号；和，各组OFDM符号内采用长度为4的正交码进行频域码分复用，每组OFDM符号包括一个OFDM符号；和，各组OFDM符号内采用长度为8的正交码进行频域和时域的码分复用，其中该频域码分复用长度为4，该时域码分复用长度为2，每组OFDM符号包括时域上连续的2个OFDM符号。
另一种可能实现方式中，当该RI等于3或者4时，该解调导频图案集合中的解调导频图案的正交码图案包括各组OFDM符号内采用长度为4的正交码进行频域码分复用，每组OFDM符号包括一个OFDM符号；和，各组OFDM符号内采用长度为8的正交码进行频域和时域的码分复用，其中该频域码分复用长度为4，该时域码分复用长度为2每组OFDM符号包括时域上连续的2个OFDM符号。
另一种可能实现方式中，当该RI属于集合{5，6，7，8}时，该解调导频图案集合中的解调导频图案的正交码图案包括各组OFDM符号内采用长度为8的正交码进行频域和时域的码分复用，其中该频域码分复用长度为4，该时域码分复用长度为2，每组OFDM符号包括时域上连续的2个OFDM符号；和，各组OFDM符号内的第一个OFDM符号采用长度4的正交码进行频域码分复用，在第二OFDM符号上采用长度4的正交码进行频域码分复用，每组OFDM符号包括时域上连续的2个OFDM符号。
在本申请实施例提供的技术方案中，该RI对应的不同的至少两种的解调导频图案可以有效增加扩频增益，从而提高数据检测性能。同时，该RI对应的解调导频图案集合中的各解调导频图案其所占用的RE的数目不同，可以在增加复用的用户数的情况下，保证信道估计性能。
第七方面，本申请提供一种基站，该基站具有实现上述方法中基站的功能。该功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块。
一种可能实现方式中，该基站包括：
处理模块，用于确定秩指示RI和导频配置信息，并根据该导频配置信息从该RI对应的解调导频图案集合中确定传输时间单元内的目标解调导频图案，该解调导频图案集合中包括至少两种解调导频图案，该解调导频图案集合中的各解调导频图案各指示一种正交频 分复用OFDM符号集合中各OFDM符号的时频资源，且该解调导频图案集合中的各解调导频图案指示的各OFDM符号的时频资源单元RE的数目不同以及该解调导频图案集合中的各解调导频图案采用的正交码图案不同，该正交码图案包括频域一维扩频图案和时频两维扩频图案，该至少两种解调导频图案是同一种子帧类型下的解调导频图案；
发送模块，用于按照该目标导频图案将导频信号映射在时频资源上，并发送该导频信号、该导频配置信息和RI。
另一种可能实现方式中，该基站包括：
收发器，处理器以及总线；
该收发器与该处理器通过该总线相连；
该处理器，执行如下步骤：确定秩指示RI和导频配置信息，并根据该导频配置信息从该RI对应的解调导频图案集合中确定传输时间单元内的目标解调导频图案，该解调导频图案集合中包括至少两种解调导频图案，该解调导频图案集合中的各解调导频图案各指示一种正交频分复用OFDM符号集合中各OFDM符号的时频资源，且该解调导频图案集合中的各解调导频图案指示的各OFDM符号的时频资源单元RE的数目不同以及该解调导频图案集合中的各解调导频图案采用的正交码图案不同，该正交码图案包括频域一维扩频图案和时频两维扩频图案，该至少两种解调导频图案是同一种子帧类型下的解调导频图案；
该收发器，执行如下步骤：
按照该目标导频图案将导频信号映射在时频资源上，并发送该导频信号、该导频配置信息和RI。
第八方面，本申请提供一种接收设备，该接收设备具有实现上述方法中接收设备的功能。该功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块。
一种可能实现方式中，该接收设备包括：
处理模块，用于获取传输时间单元内的目标解调导频图案，该目标解调导频图由基站根据导频配置信息从秩指示RI对应的解调导频图案集合中确定，该解调导频图案集合中包括至少两种解调导频图案，该解调导频图案集合中的各解调导频图案各指示一种正交频分复用OFDM符号集合中各OFDM符号的时频资源，且该解调导频图案集合中的各解调导频图案指示的各OFDM符号的时频资源单元RE的数目不同以及该解调导频图案集合中的各解调导频图案采用的正交码图案不同，该正交码图案包括频域一维扩频图案和时频两维扩频图案，该至少两种解调导频图案是同一种子帧类型下的解调导频图案；
接收模块，用于按照该目标解调导频图案接收导频信号，该导频信号由该基站按照该目标解调导频图案映射在时频资源上后发送。
另一种可能实现方式中，该接收设备包括：
收发器，处理器以及总线；
该收发器与该处理器通过该总线相连；
该处理器，执行如下步骤：
获取传输时间单元内的目标解调导频图案，该目标解调导频图由基站根据导频配置信 息从秩指示RI对应的解调导频图案集合中确定，该解调导频图案集合中包括至少两种解调导频图案，该解调导频图案集合中的各解调导频图案各指示一种正交频分复用OFDM符号集合中各OFDM符号的时频资源，且该解调导频图案集合中的各解调导频图案指示的各OFDM符号的时频资源单元RE的数目不同以及该解调导频图案集合中的各解调导频图案采用的正交码图案不同，该正交码图案包括频域一维扩频图案和时频两维扩频图案，该至少两种解调导频图案是同一种子帧类型下的解调导频图案；
该收发器，执行如下步骤：
按照该目标解调导频图案接收导频信号，该导频信号由该基站按照该目标解调导频图案映射在时频资源上后发送。
第九方面，本申请提供一种计算机可读存储介质，包括指令，当该指令在计算机上运行时，该计算机执行上述各项该的方法。
第十方面，本申请提供一种包含指令的计算机程序产品，当该计算机程序产品在计算机上运行时，该计算机执行上述各项该的方法。
从以上技术方案可以看出，本申请实施例具有以下优点：该基站在利用时频资源发送导频信号时，使得该第一集合中的第一个OFDM符号的发送时刻在该第二集合中的第一个OFDM符号的发送时刻之前。即在整个导频信号的传输过程中，接收设备在接收到第一码字的时频资源之后就可以立即启动该第一码字的译码，从而提前了该第一码字的译码时刻，进而提前了该第二码字的译码时刻。同时，由于该第一码字的MCS指示值大于该第二码字的MCS指示值，因此，该第一码字的译码成功率较高。由于该第二码字的译码要基于该第一码字的译码结果，因此，该第一码字译码成功率较高，可以有效的提高该第二码字的译码成功率。
附图说明
图1为现有解调导频图案的示意图；
图2为本申请实施例中数据处理方法的一个实施例示意图；
图3为本申请实施例中解调导频图案的一个示意图；
图4为本申请实施例中解调导频图案的另一个示意图；
图5为本申请实施例中解调导频图案的另一个示意图；
图6为本申请实施例中解调导频图案的另一个示意图；
图7为本申请实施例中解调导频图案的另一个示意图；
图8为本申请实施例中解调导频图案的另一个示意图；
图9为本申请实施例中解调导频图案的另一个示意图；
图10为本申请实施例中数据处理方法的另一个实施例示意图；
图11为本申请实施例中解调导频图案的另一个示意图；
图12为本申请实施例中解调导频图案的另一个示意图；
图13为本申请实施例中解调导频图案的另一个示意图；
图14为本申请实施例中解调导频图案的另一个示意图；
图15为本申请实施例中基站的一个实施例示意图；
图16为本申请实施例中基站的另一个实施例示意图；
图17为本申请实施例中接收设备的一个实施例示意图；
图18为本申请实施例中接收设备的另一个实施例示意图；
图19为本申请实施例中基站的另一个实施例示意图；
图20为本申请实施例中基站的另一个实施例示意图；
图21为本申请实施例中接收设备的另一个实施例示意图；
图22为本申请实施例中接收设备的另一个实施例示意图。
具体实施方式
本申请实施例提供了一种数据处理方法，导频图案生成方法以及相关装置，用于有效提前该第二码字的译码时刻，同时有效提高该第二码字的译码正确率。
本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”、“第三”、“第四”等(如果存在)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。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的实施例能够以除了在这里图示或描述的内容以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
在通信过程中，业务数据的DMRS与业务数据同时发送，并且位于相同的时频资源范围内。当基站同时传输多层数据时，每层数据都有对应的DMRS端口。每一层数据的DMRS端口上的DMRS与该层数据经过了相同的预编码，因此可以利用该层数据的DMRS进行信道估计，作为该层数据传输经历的信道，用于该层数据的解调和译码。当基站同时传输多层数据时，多个DMRS端口通过在频域和/或时域上使用OCC进行码分复用。码分复用可以带来扩频增益，有助于提升信道估计性能。现有技术中，当基站同时传输多个码字时，如图1所示，每个码字对应的DMRS端口占用相同的OFDM符号，并且多个码字的DMRS端口的频域密度相同。从而导致在译码过程中，需要在接收到第一个码字和第二码字的时频资源之后，再进行第一个码字的译码，并在第一个码字的译码完成之后，再进行第二个码字的译码，从而导致数据译码时延大。同时现有技术中，对于同一个秩指示(英文全称：Rank Infication，简称：RI)，DMRS图案可以有两种。例如，RI为1或2时，当基站对终端设备进行单用户多输入多输出(英文全称：Multiple-Input Multiple-Output，简称MIMO)传输时，给终端设备配置OCC长度为2的DMRS图案，如图1中的(a)所示；当对终端进行多用户MIMO传输，如复用两个终端设备，其中每个终端设备的RI＝2时，基站给每个终端设备配置OCC长度为4的DMRS图案，如图1中的(b)所示。两个图案的占用的RE个数相同(均为12个RE)，OCC长度不同。则根据图1中的(a)中的DMRS图案，终端设备可以在每组OCC2的时频资源上进行信道估计，一共可以获得六组信道估计数据，并在整个子 帧上进行时频两维的信道插值，获得每个RE的信道估计结果。而根据图1中的(b)的DMRS图案，终端设备可以在每组OCC4的时频资源上进行信道估计，一共可以获得三组信道估计数据，并在整个子帧上进行时频两维的信道插值，获得每个RE的信道估计结果。由于后者只能获得3组信道估计数据用于信道插值，从整个子帧整体的信道估计结果上看，性能比前者差。因此，在现有技术中，当OCC的长度发生变化时，会带来信道估计性能的损失。
为了解决这一问题，本申请实施例提供如下技术方案：该基站在传输导频信号之前，获取传输时间单元内的解调导频图案，该解调导频图案包括第一码字的第一解调导频图案和第二码字的第二解调导频图案；其中，该第一解调导频图案指示第一集合中各OFDM符号的时频资源，该第二解调导频图案指示第二集合中各有OFDM符号的时频资源；同时该第一码字的MCS指示值大于该第二码字的MCS指示值；然后该基站将导频信号按照该解调导频图案映射在时频资源，最后该基站发送该导频信号，其中，该基站发送时频资源时，该第一集合中的第1个OFDM符号的发送时刻在该第二集合中的第1个OFDM符号的发送时刻之前，该第一集合中的第1个OFDM符号为该第一集合中的发送时刻最早的OFDM符号，该第二集合中的第1个OFDM符号为该第二集合中的发送时刻最早的OFDM符号。
下面根据基站发送导频信号时的码字情况进行分别说明：
一、基站采用多码字传输导频信号。
具体情况请参阅图2所示，本申请实施例中数据处理方法中的一个实施例包括：
201、基站获取传输时间单元内的解调导频图案。
该基站发送导频信号之前，该基站获取发送该导频信号的传输时间单元内的解调导频图案，该解调导频图案包括第一码字的解调参考信号端口的第一解调导频图案和第二码字的解调参考信号端口的第二解调导频图案，其中该第一解调导频图案指示第一集合中各OFDM符号的时频资源，该第二解调导频图案指示第二集合中各OFDM符号的时频资源，该第一码字的MCS指示值大于该第二码字的MCS指示值。同时，该第一集合中的第1个OFDM符号的发送时刻在该第二集合中的第1个OFDM符号的发送时刻之前，该第一集合中的第1个OFDM符号为该第一集合中的发送时刻最早的OFDM符号，该第二集合中的第1个OFDM符号为该第二集合中的发送时刻最早的OFDM符号。
如图3所示一个传输时间单元内的解调导频图案，其中，横轴为时域，纵轴为频域，该第一码字与该第二码字均采用长度为4的OCC进行频域码分复用。该图3中为由左往右的次序为时域中由前往后的次序，即该第一码字的第一个OFDM符号为时域为1的OFDM符号，该第二码字的第一个OFDM符号为时域为2的OFDM符号，依次类推。本实施例中的各解调导频图案的图示均按照此规则。由该图3可知该第一码字的第一个OFDM符号在频域上占用了全部RE，即12个RE，而该第二码字的第一个OFDM符号在频域上占用了全部RE，即12个RE。
在实际应用中，该解调导频图案还包括但不限于如下几种特点：
一种可能实现方式中，该第一解调导频图案指示的该第一OFDM符号集合中的第一个OFDM符号的RE数目大于该第二解调导频图案指示的该第二OFDM符号集合中的第一个OFDM符号的RE数目。如图4所示，该第一码字的第一个OFDM符号在频域上占用了全部RE，即 12个RE；该第二码字的第一个OFDM符号在频域上占用了如图4所示的部分RE，即8个RE。该图4仅展示了一种可能实现方式，在实际应用中，该第二码字的第二个OFDM符号在频域上占用了如图4所示的8个RE，也可以为其他的数目，具体此处不做限定，只要保证该第一码字的第一个OFDM符号占用的RE的数目大于该第二码字的第一OFDM符号占用的RE的数目即可。
另一种可能实现方式中，该第一解调导频图案在该第一OFDM符号集合中至少存在一个OFDM符号上占用的RE的数目小于该第一个OFDM符号上占用的RE的数目。本实施例中，在该第一解调导频图案在该第一OFDM符号集合中包含两个OFDM符号时，如图5中的(a)所示，该第一码字的第一个OFDM符号在频域上占用了12个RE，而该第一码字的第二个OFDM符号在频域上占用了8个RE。在实际应用中，该第一OFDM符号集合中的各OFDM符号在按照时域位置由前往后的排序中，该第一解调导频图案在该第一OFDM符号集合中的各OFDM符号上占用的RE的数目可以依次减少，比如，在本实施例中，在该第一解调导频图案在该第一OFDM符号集合中包含三个OFDM符号时，该第一解调导频图案在该第一OFDM符号集合中的第二个OFDM符号上占用的RE的数目小于该第一解调导频图案在该第一OFDM符号集合中的第一个OFDM符号上占用的RE的数目；然后该第一解调导频图案在该第一OFDM符号集合中的第三个OFDM符号上占用的RE的数目小于该第一解调导频图案在该第一OFDM符号集合中的第二个OFDM符号上占用的RE的数目。如图5中的(b)所示，该第一码字的第一个OFDM符号在频域上占用了12个RE，该第一码字的第二个OFDM符号在频域上占用了8个RE，该第一码字的第三个OFDM符号在频域上占用了4个RE。同时，该第一解调导频图案在该第一OFDM符号集合中的各OFDM符号上占用的RE的数目可以仅比该第一解调导频图案在该第一OFDM符号集合中的第一个OFDM符号上占用的RE的数目小即可。比如图6所示，该第一码字的第一个OFDM符号在频域上占用了12个RE，该第一码字的第二个OFDM符号在频域上占用了8个RE，该第一码字的第三个OFDM符号在频域上占用了8个RE。当然图6仅展示了一种可能方式，在实际应用中还可以有其他的方式，具体的设置方式，此处不做限定。
另一种可能实现方式中，该第一解调导频图案在该第一OFDM符号集合中至少存在一个OFDM符号上占用的RE集合为在第1个OFDM符号上占用的RE集合的真子集；或者，该第一解调导频图案在该第一OFDM符号集合中至少存在一个OFDM符号上占用的RE集合与在第1个OFDM符号上占用的RE集合的交集为空集。在实际应用中，若该第一解调导频图案在该第一OFDM符号集合中包含两个OFDM符号，则如图7中的(a)所示所示一个传输时间单元内的解调导频图案，其中，横轴为时域，纵轴为频域，该第一码字与该第二码字均采用长度为2的OCC进行频域码分复用，该第一码字的第一个OFDM符号在频域上占用的RE集合为(2，3，6，7，10，11)，该第一码字的第二个OFDM符号在频域上占用的RE集合为(2，3，10，11)，具此可看出该第一码字的第二个OFDM符号在频域上占用的RE集合为该第一码字的第一个OFDM符号在频域上占用的RE集合的真子集。在实际应用中，该第一解调导频图案在该第一OFDM符号集合中的各OFDM符号的RE集合均不为空。同时，该第一解调导频图案在该第一OFDM符号集合中的各OFDM符号上占用的RE可以均为该为该第一解调导频 图案在该第一OFDM符号集合中的第一个OFDM符号的RE集合的真子集。比如，若该第一解调导频图案在该第一OFDM符号集合中包含三个OFDM符号，则该第一解调导频图案在该第一OFDM符号集合中的第二个OFDM符号上占用的RE集合为该第一解调导频图案在该第一OFDM符号集合中的第一个OFDM符号上占用的RE集合的真子集；然后该第一解调导频图案在该第一OFDM符号集合中的第三个OFDM符号上占用的RE集合为该第一解调导频图案在该第一OFDM符号集合中的第一个OFDM符号上占用的RE集合的真子集。或者，该第一解调导频图案在该第一OFDM符号集合中的各OFDM符号的RE集合均与该为该第一解调导频图案在该第一OFDM符号集合中的第一个OFDM符号的RE集合的交集为空集。比如，若该第一解调导频图案在该第一OFDM符号集合中包含三个OFDM符号，则该第一解调导频图案在该第一OFDM符号集合中的第二个OFDM符号上占用的RE集合与该第一解调导频图案在该第一OFDM符号集合中的第一个OFDM符号上占用的RE集合的交集为空集；然后该第一解调导频图案在该第一OFDM符号集合中的第三个OFDM符号上占用的RE集合与该第一解调导频图案在该第一OFDM符号集合中的第一个OFDM符号上占用的RE集合的交集为空集。如图7中的(b)所示一个传输时间单元内的解调导频图案，其中，横轴为时域，纵轴为频域，该第一码字与该第二码字均采用长度为2的OCC进行频域码分复用，该第一码字的第一个OFDM符号在频域上占用的RE集合为(2，3，6，7，10，11)，该第一码字的第二个OFDM符号在频域上占用的RE集合为(2，3，10，11)，该第一码字的第三个OFDM符号在频域上占用的RE集合为(6，7)，具此可以看出，该第一码字的第二个OFDM符号在频域上占用的RE集合与该第一码字的第三个OFDM符号在频域上占用的RE集合均为该第一码字的第一个OFDM符号在频域上占用的RE集合的真子集；同时该第一码字的第三个OFDM符号在频域上占用的RE集合与该第一码字的第二个OFDM符号在频域上占用的RE集合的交集为空集。而若图7中的(b)中该第一码字的第一个OFDM符号在频域上占用的RE集合为(2，3，6，7，10，11)，该第一码字的第二个OFDM符号在频域上占用的RE集合为(4，5，8，9)，该第一码字的第三个OFDM符号在频域上占用的RE集合为(0，1)，具此可看出该第一码字的第二个OFDM符号在频域上占用的RE集合与该第一码字的第三个OFDM符号在频域上占用的RE集合均与该第一码字的第一个OFDM符号在频域上占用的RE集合的交集为空集；同时该第一码字的第三个OFDM符号在频域上占用的RE集合与该第一码字的第二个OFDM符号在频域上占用的RE集合的交集也为空集。本实施例中的图7仅展示了一种可能方式，具体的设置，此处不做限定。
另一种可能实现方式中，在第二解调导频图案中，该第二解调导频图案在该第二OFDM符号集合中至少存在一个OFDM符号上占用的RE的数目小于第1个OFDM符号上占用的RE的数目。如图8所示，该第二码字的第一个OFDM符号在频域上占用了8个RE，该第二码字的第二个OFDM符号在频域上占用了4个RE。本实施例中，该第二OFDM符号集合中的各OFDM符号在按照时域位置由前往后的排序中，该第二解调导频图案在该第一OFDM符号集合中的各OFDM符号上占用的RE的数目可以依次减少，比如，该第二解调导频图案在该第二OFDM符号集合中的第二个OFDM符号上占用的RE的数目小于该第二解调导频图案在该第二OFDM符号集合中的第一个OFDM符号上占用的RE的数目；然后该第二解调导频图案在该 第二OFDM符号集合中的第三个OFDM符号上占用的RE的数目小于该第二解调导频图案在该第二OFDM符号集合中的第二个OFDM符号上占用的RE的数目。同时，该第二解调导频图案在该第二OFDM符号集合中的各OFDM符号上占用的RE的数目可以仅比该第二解调导频图案在该第二OFDM符号集合中的第一个OFDM符号上占用的RE的数目小即可。具体的设置方式，此处不做限定。
另一种可能实现方式中，该第二解调导频图案中，该第二解调导频图案在该第二OFDM符号集合中至少存在一个OFDM符号上占用的RE集合为在第1个OFDM符号上占用的RE集合的真子集；或者，该第二解调导频图案在该第二OFDM符号集合中至少存在一个OFDM符号上占用的RE集合与在第1个OFDM符号上占用的RE集合的交集为空集。如图8所示，该第二码字的第一个OFDM符号在频域上占用的RE集合为(0，1，2，3，8，9，10，11)，而该第二码字的第二个OFDM符号在频域上占用的RE集合为(4，5，6，7)，具此可以看出，该第二码字在第二个OFDM符号在频域上占用的RE集合与该第二码字在第一个OFDM符号在频域上占用的RE集合的交集为空集。若该第二码字的第一个OFDM符号在频域上占用的RE集合为(0，1，2，3，8，9，10，11)，而该第二码字的第二个OFDM符号在频域上占用的RE集合为(8，9，10，11)，具此可以看出，该第二码字在第二个OFDM符号在频域上占用的RE集合为该第二码字在第一个OFDM符号在频域上占用的RE集合的真子集。实际应用中，该第二解调导频图案在该第二OFDM符号集合中的各OFDM符号上占用的RE均不为空。同时，该第二解调导频图案在该第二OFDM符号集合中的各OFDM符号上占用的RE可以依次为真子集或者依次交集为空集。比如，该第二解调导频图案在该第二OFDM符号集合中的第二个OFDM符号上占用的RE集合为该第二解调导频图案在该第二OFDM符号集合中的第一个OFDM符号上占用的RE集合的真子集；然后该第二解调导频图案在该第二OFDM符号集合中的第三个OFDM符号上占用的RE集合为该第二解调导频图案在该第二OFDM符号集合中的第二个OFDM符号上占用的RE集合的真子集。或者，该第二解调导频图案在该第二OFDM符号集合中的第二个OFDM符号上占用的RE集合与该第二解调导频图案在该第二OFDM符号集合中的第一个OFDM符号上占用的RE集合的交集为空集；然后该第二解调导频图案在该第二OFDM符号集合中的第三个OFDM符号上占用的RE集合与该第二解调导频图案在该第二OFDM符号集合中的第二个OFDM符号上占用的RE集合的交集为空集。
另一种可能实现方式中，在该第二解调导频图案中，该第二解调导频图案在该第二OFDM符号集合中至少存在一个OFDM符号上占用的RE的数目大于第1个OFDM符号上占用的RE的数目。如图9中的(a)所示，该第二码字的第一个OFDM符号在频域上占用了8个RE，该第二码字的第二个OFDM符号在频域上占用了12个RE。本实施例中，该第二OFDM符号集合中的各OFDM符号在按照时域位置由前往后的排序中，该第二解调导频图案在该第一OFDM符号集合中的各OFDM符号上占用的RE的数目可以依次增加，比如，该第二解调导频图案在该第二OFDM符号集合中的第二个OFDM符号上占用的RE的数目大于该第二解调导频图案在该第二OFDM符号集合中的第一个OFDM符号上占用的RE的数目；然后该第二解调导频图案在该第二OFDM符号集合中的第三个OFDM符号上占用的RE的数目大于该第二解调导频图案在该第二OFDM符号集合中的第二个OFDM符号上占用的RE的数目。如图9中的(b) 所示，该第二码字的第一个OFDM符号在频域上占用了4个RE，该第二码字的第二个OFDM符号在频域上占用了8个RE，该第二码字的第三个OFDM符号在频域上占用了12个RE。同时，该第二解调导频图案在该第二OFDM符号集合中的各OFDM符号上占用的RE的数目可以仅比该第二解调导频图案在该第二OFDM符号集合中的第一个OFDM符号上占用的RE的数目大即可。具体的设置方式，此处不做限定。
本实施例中，该基站可以根据秩指示RI来选择各种不同的解调导频图案，比如RI属于集合{5，6，7，8}时，该基站可以选择所有使用长度为4的正交码进行码分复用的解调导频图案；当RI为1或2时，该基站可以选择如图7所示的解调导频图案。
可选的，该基站还可以向接收设备发送导频配置信息，该导频配置信息可以用来指示在该第二OFMD符号集合中，按照时域位置由前往后的排序，该第二解调导频图案在各OFDM符号上占用的RE数目增加或者减少。
202、该基站按照该解调导频图案将导频信号映射在时频资源上，并发送该导频信号给接收设备。
该基站按照该解调导频图案将待发送的导频信号映射在时频资源上，然后将该导频信号发送给网络中的接收设备。
本实施例中，该接收设备可以为移动终端，也可以为网络中的其他网元，具体形式此处不做限定。
203、该接收设备按照该解调导频图案接收该导频信号。
该接收设备在接收导频信号之前，会获取到该解调导频图案以及相关的指示信息，然后该接收设备按照该解调导频图案以及相关的指示信息接收该基站发送的导频信号。
本申请实施例提供的技术方案中，在按照时域位置由前往后的排序中，该第一OFDM符号集合中的第一个OFDM符号的时域位置在该第二OFDM符号集合中的第一个OFDM符号，在整个导频信号的发送过程中，在接收到第一码字的时频资源之后就可以立即启动该第一码字的译码，从而提前了该第一码字的译码时刻，进而提前了该第二码字的译码时刻。同时该第一码字的MCS指示值大于该第二码字的MCS指示值，可以有效的提高该第一码字的译码成功率，进而提高该第二码字的译码成功率。
二、基站采用单码字发送导频信号。
具体情况，请参阅图10所示，本申请实施例中数据处理方法的另一个实施例包括：
1001、基站确定秩指示RI和导频配置信息，并根据该导频配置信息从RI对应的解调导频图案集合中确定目标解调导频图案。
该基站发送导频信号之前，该基站获取发送该导频信号的RI，以及导频配置信息，该导频配置信息用于指示该基站从该RI对应的解调导频图案集合中的选择一个解调导频图案作为该目标解调导频图案。该RI对应的解调导频图案集合中包括至少两种解调导频图案，该解调导频图案集合中的各解调导频图案各占用一种OFDM符号集合所在的时频资源位置，且该解调导频图案集合中的各解调导频图案在所占用的时频资源位置中占用的时频资源单元RE的数目不同以及该解调导频图案集合中的各解调导频图案采用的正交码图案不同，该正交码图案包括频域一维扩频图案和时频两维扩频图案，该至少两种解调导频图案 是同一种子帧类型下的解调导频图案。
本实施例中，该频域一维扩频图案指的是正交码在一个OFDM符号内在频域上进行扩频的图案。例如长度为N的正交码，频域移位扩频图案指的是在同一个OFDM符号内，正交码在连续的或者不连续的N个RE上进行码分复用。N是正整数，例如2、4、8。该时频两维扩频图案指的是正交码在大于一个OFDM符号上进行扩频的图案，包括时域扩频和频域扩频。例如，长度为N的正交码在2个OFDM符号上进行扩频，其中，在每个OFDM符号上的4个连续或者不连续的RE上进行频域扩频，在2个OFDM符号上进行时域扩频。在实际应用中，该RI不同，该解调导频图案集合中的导频图案有不同的情况，具体情况包括但不限于如下几种可能实现方式：
一种可能实现方式中，当该RI等于1或者2时，该解调导频图案集合中的解调导频图案的正交码图案包括：
(1)、各组OFDM符号内采用长度为2的正交码进行频域码分复用，每组OFDM符号包括一个OFDM符号，比如图11中的(a)所示一个传输时间单元内的解调导频图案，其中，横轴为时域，纵轴为频域，该解调导频图案采用长度为2的OCC进行频域码分复用，其中该第一组OFDM符号在频域上占用的RE集合为(2，3，6，7，10，11)，该第二组OFDM符号在频域上占用的RE集合为(0，1，8，9)。同样，若解调导频图案包括三组OFDM符号，则如图11中的(b)所示一个传输时间单元内的解调导频图案，其中，横轴为时域，纵轴为频域，该解调导频图案采用长度为2的OCC进行频域码分复用，其中该第一组OFDM符号在频域上占用的RE集合为(2，3，6，7，10，11)，该第二组OFDM符号在频域上占用的RE集合为(0，1，8，9)该第三组OFDM符号在频域上占用的RE集合为(4，5)。
(2)、各组OFDM符号内采用长度为4的正交码进行频域码分复用，每组OFDM符号包括一个OFDM符号。比如图12中的(a)所示一个传输时间单元内的解调导频图案，其中，横轴为时域，纵轴为频域，该解调导频图案采用长度为4的OCC进行频域码分复用，其中该第一组OFDM符号在频域上占用的RE集合为(0，1，2，3，4，5，6，7，8，9，10，11)，该第二组OFDM符号在频域上占用的RE集合为(0，1，2，3，8，9，10，11)。当然，该解调导频图案也可以是另外一种可能实现方式，如图12中的(b)所示一个传输时间单元内的解调导频图案，其中，横轴为时域，纵轴为频域，该解调导频图案采用长度为4的OCC进行频域码分复用，其中该第一组OFDM符号在频域上占用的RE集合为(0，1，2，3，4，5，6，7，8，9，10，11)，该第二组OFDM符号在频域上占用的RE集合为(4，5，6，7)。在实际应用中，若解调导频图案包括三组OFDM符号，则如图12中的(c)所示一个传输时间单元内的解调导频图案，其中，横轴为时域，纵轴为频域，该解调导频图案采用长度为4的OCC进行频域码分复用，其中该第一组OFDM符号在频域上占用的RE集合为(0，1，2，3，4，5，6，7，8，9，10，11)，该第二组OFDM符号在频域上占用的RE集合为(0，1，2，3，8，9，10，11)，该第三组OFDM符号在频域上占用的RE集合为(4，5，6，7)。
(3)、各组OFDM符号内采用长度为8的正交码进行频域和时域的码分复用，其中该频域码分复用长度为4，该时域码分复用长度为2，每组OFDM符号包括时域上连续的2个OFDM符号，比如图13中的(a)所示一个传输时间单元内的解调导频图案，其中，横轴为 时域，纵轴为频域，该解调导频图案采用长度为8的OCC进行频域码分复用，其中该第一组OFDM符号在频域上占用的RE集合为OFDM符号1和OFDM符号2上的(0，1，2，3，4，5，6，7，8，9，10，11)，该第二组OFDM符号在频域上占用的RE集合为OFDM符号5和OFDM符号6上的(0，1，2，3，8，9，10，11)。当然，该解调导频图案也可以是另外一种可能实现方式，如图13中的(b)所示一个传输时间单元内的解调导频图案，其中，横轴为时域，纵轴为频域，该解调导频图案采用长度为8的OCC进行频域码分复用，该第一组OFDM符号在频域上占用的RE集合为OFDM符号1和OFDM符号2上的(0，1，2，3，4，5，6，7，8，9，10，11)，该第二组OFDM符号在频域上占用的RE集合为OFDM符号5和OFDM符号6上的(4，5，6，7)。同样，若解调导频图案包括三组OFDM符号，则如图13中的(c)所示一个传输时间单元内的解调导频图案，其中，横轴为时域，纵轴为频域，该解调导频图案采用长度为8的OCC进行频域码分复用，其中该第一组OFDM符号在频域上占用的RE集合为OFDM符号1和OFDM符号2上的(0，1，2，3，4，5，6，7，8，9，10，11)，该第二组OFDM符号在频域上占用的RE集合为OFDM符号5和OFDM符号6上的(0，1，2，3，8，9，10，11)，第三组OFDM符号在频域上占用的RE集合为OFDM符号5和OFDM符号6上的(4，5，6，7)。
另一种可能实现方式中，当该RI等于3或者4时，该解调导频图案集合中的解调导频图案的正交码图案包括：
(1)、各OFDM符号内采用长度为4的正交码进行频域码分复用，每组OFDM符号包括一个OFDM符号，即如图12所示。
(2)、各组OFDM符号内采用长度为8的正交码进行频域和时域的码分复用，其中该频域码分复用长度为4，该时域码分复用长度为2每组OFDM符号包括时域上连续的2个OFDM符号，即如图13所示。
另一种可能实现方式中，当该RI属于集合{5，6，7，8}时，该解调导频图案集合中的解调导频图案的正交码图案包括：
各组OFDM符号内采用长度为8的正交码进行频域和时域的码分复用，其中该频域码分复用长度为4，该时域码分复用长度为2，每组OFDM符号包括时域上连续的2个OFDM符号，即如图13所示。
在实际应用中，从该RI对应的解调导频图案集合中的各解调导频图案中确定的该目标解调导频图案还可以包括但不限于如下几种可能特点：
一种可能实现方式中，该目标解调导频图案占用的OFDM符号集合中包括N组OFDM符号，在按照时域位置由前至后的排序中，该目标解调导频图案在该OFDM符号集合中至少存在一个OFDM符号占用的RE的数目小于在第1组OFDM符号上占用的RE的数目，该OFDM符号集合中的各组OFDM符号包括至少一个OFDM符号，该N为正整数。若该OFDM符号集合中包含两组OFDM符号，则如图14中的(a)所示，该第一组OFDM符号在频域上占用的RE集合为(2，3，6，7，10，11)，该第二组OFDM符号在频域上占用的RE集合为(2，3，10，11)。如本实施例中，该OFDM符号集合中的各组OFDM符号在按照时域位置由前往后的排序中，该目标解调导频图案在该OFDM符号集合中的各组OFDM符号上占用的RE的数目可以依 次减少，比如，若该目标解调导频图案在该OFDM符号集合中包含三组OFDM符号，则该目标解调导频图案在该OFDM符号集合中的第二组OFDM符号上占用的RE的数目小于该目标解调导频图案在该OFDM符号集合中的第一组OFDM符号上占用的RE的数目；然后该目标解调导频图案在该OFDM符号集合中的第三组OFDM符号上占用的RE的数目小于该目标解调导频图案在该OFDM符号集合中的第二组OFDM符号上占用的RE的数目。同时，该目标解调导频图案在该OFDM符号集合中的各组OFDM符号上占用的RE的数目可以仅比该目标解调导频图案在该OFDM符号集合中的第一组OFDM符号上占用的RE的数目小即可。具体的设置方式，此处不做限定。如图14中的(b)所示，该第一组OFDM符号在频域上占用的RE集合为(2，3，6，7，10，11)，该第二组OFDM符号在频域上占用的RE集合为(2，3，10，11)，该第三组OFDM符号在频域上占用的RE集合为(6，7)，具此可以看出，该解调导频图案中可以仅存在该第三组在频域上占用的RE的数目小于该第一组OFDM符号在频域上占用的RE的数目。当然该解调导频图案中也可以如图11所示，该第一组OFDM符号在频域上占用的RE的数目大于该第二组OFDM符号在频域上占用的RE的数目；该第二组OFDM符号在频域上占用的RE的数目大于该第三组OFDM符号在频域上占用的RE的数目。具体方式，此处不做限定。
另一种可能实现方式中，该目标解调导频图案在该OFDM符号集合中至少存在一组OFDM符号占用的RE集合与在第1组OFDM符号上占用的RE集合的交集为空集；或，该目标解调导频图案在该OFDM符号集合中至少存在一组OFDM符号占用的RE集合为在第1组OFDM符号上占用的RE集合的真子集。在实际应用中，该目标解调导频图案在该OFDM符号集合中的各组OFDM符号上占用的RE均不为空。同时，该目标解调导频图案在该OFDM符号集合中的各组OFDM符号上占用的RE可以依次为真子集或者依次交集为空集。比如，该目标解调导频图案在该OFDM符号集合中的第二组OFDM符号上占用的RE集合为该目标解调导频图案在该OFDM符号集合中的第一组OFDM符号上占用的RE集合的真子集；然后该目标解调导频图案在该OFDM符号集合中的第三组OFDM符号上占用的RE集合为该目标解调导频图案在该OFDM符号集合中的第二组OFDM符号上占用的RE集合的真子集。或者，该目标解调导频图案在该OFDM符号集合中的第二组OFDM符号上占用的RE集合与该目标解调导频图案在该OFDM符号集合中的第一组OFDM符号上占用的RE集合的交集为空集；然后该目标解调导频图案在该OFDM符号集合中的第三组OFDM符号上占用的RE集合与该目标解调导频图案在该OFDM符号集合中的第二组OFDM符号上占用的RE集合的交集为空集。如图11所示，该第一组OFDM符号在频域上占用的RE集合为(2，3，6，7，10，11)，该第二组OFDM符号在频域上占用的RE集合为(0，1，8，9)，该第三组OFDM符号在频域上占用的RE集合为(4，5)。即该第一组OFDM符号在频域上占用的RE集合与该第二组OFDM符号在频域上占用的RE集合的交集为空集，即该第三组OFDM符号在频域上占用的RE集合与该第二组OFDM符号在频域上占用的RE集合的交集为空集。同时，也可以如图14所示，该第一组OFDM符号在频域上占用的RE集合为(2，3，6，7，10，11)，该第二组OFDM符号在频域上占用的RE集合为(2，3，6，7，10，11)，该第三组OFDM符号在频域上占用的RE集合为(6，7)。即该第三组OFDM符号在频域上占用的RE集合为该第一组OFDM符号在频域上占用的RE集 合的真子集。
1002、基站按照该目标解调导频图案将导频信号映射在时频资源上，并发送该导频信号，RI以及导频配置信息给接收设备。
该基站按照该目标解调导频图案将待发送的导频信号映射在时频资源上，然后将该导频信号发送给网络中的接收设备，同时也将该RI和该导频配置信息发送给该接收设备。
本实施例中，该接收设备可以为移动终端，也可以为网络中的其他网元，具体形式此处不做限定。
1003、接收设备根据该目标解调导频图案接收导频信号。
该接收设备在接收导频信号之前，会获取到该RI和该导频配置信息，然后根据该RI和该导频配置信息获取目标解调导频图案，然后该接收设备按照该解调导频图案以及相关的指示信息接收该基站发送的导频信号。
本实施例中，该RI对应的解调导频图案集合中包含的各解调导频图案采用频域一维扩频图案和时频两维扩频图案的正效码图案，可以有效增加扩频增益，从而提高数据检测性能。同时，该RI对应的解调导频图案集合中的各解调导频图案其所占用的RE的数目不同，也可以增加了用户的复用情况。
上面对本申请实施例中的数据处理方法进行了描述，下面对本申请实施例中的基站和接收设备进行描述。
具体请参阅图15所示，本申请实施例中基站的一个实施例，包括：
处理模块1501，用于获取传输时间单元内的解调导频图案，该解调导频图案包括第一码字的第一解调导频图案和第二码字的第二解调导频图案，该第一解调导频图案指示第一集合中各正交频分复用OFDM符号的时频资源，该第二解调导频图案指示第二集合中各OFDM符号的时频资源，该第一码字的调制编码MCS指示值大于该第二码字的MCS指示值；
发送模块1502，用于按照该导频图案将导频信号映射在时频资源上，发送该导频信号，其中，该第一集合中的第1个OFDM符号的发送时刻在该第二集合中的第1个OFDM符号的发送时刻之前，该第一集合中的第1个OFDM符号为该第一集合中的发送时刻最早的OFDM符号。
可选的，该第一集合中的第1个OFDM符号的时频资源单元RE数目大于该第二集合中的第1个OFDM符号的RE数目。
可选的，第一集合中至少存在一个OFDM符号的RE数目小于该第一集合中的第1个OFDM符号的RE数目。
可选的，该第一集合中至少存在一个OFDM符号的RE集合为该第一集合中的第1个OFDM符号的RE集合的真子集；或，该第一集合中至少存在一个OFDM符号的RE集合与该第一集合中的第1个OFDM符号的RE集合的交集为空集。
可选的，该第二集合中至少存在一个OFDM符号的RE数目小于该第二集合中的第1个OFDM符号的RE数目。
可选的，该第二集合中至少存在一个OFDM符号的RE集合为该第二集合中的第1个OFDM符号的RE集合的真子集；
或，
该第二集合中至少存在一个OFDM符号的RE集合与该第二集合中的第1个OFDM符号的RE集合的交集为空集。
可选的，该第二集合中至少存在一个OFDM符号的RE数目大于该第二集合中的第1个OFDM符号的RE数目。
可选的，该发送模块1502，还用于该发送模块，还用于发送导频配置信息，该导频配置信息用于指示在该第二集合中各OFDM符号按照发送时刻由早至晚的排序中各OFDM符号的RE数目增加或者减少。
可选的，该第一解调导频图案指示该第一集合中各OFDM符号内采用长度为4的正交码进行频域码分复用；
该第二解调导频图案指示该第二集合中的各OFDM符号内采用长度为4的正交码进行频域码分复用。
本实施例中，该基站在利用时频资源发送导频信号时，使得该第一集合中的第一个OFDM符号的发送时刻在该第二集合中的第一个OFDM符号的发送时刻之前。即在整个导频信号的传输过程中，接收设备在接收到第一码字的时频资源之后就可以立即启动该第一码字的译码，从而提前了该第一码字的译码时刻，进而提前了该第二码字的译码时刻。同时，由于该第一码字的MCS指示值大于该第二码字的MCS指示值，因此，该第一码字的译码成功率较高。由于该第二码字的译码要基于该第一码字的译码结果，因此，该第一码字译码成功率较高，可以有效的提高该第二码字的译码成功率。
具体请参阅图16，本申请实施例中的基站的另一个实施例包括：
收发器1601，处理器1602，总线1603；
该收发器1601与该处理器1602通过该总线1603相连；
总线1603可以是外设部件互连标准(peripheral component interconnect，简称PCI)总线或扩展工业标准结构(extended industry standard architecture，简称EISA)总线等。该总线可以分为地址总线、数据总线、控制总线等。为便于表示，图16中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
处理器1602可以是中央处理器(central processing unit，简称CPU)，网络处理器(network processor，简称NP)或者CPU和NP的组合。
处理器1602还可以进一步包括硬件芯片。上述硬件芯片可以是专用集成电路(application-specific integrated circuit，简称ASIC)，可编程逻辑器件(programmable logic device，简称PLD)或其组合。上述PLD可以是复杂可编程逻辑器件(complex programmable logic device，简称CPLD)，现场可编程逻辑门阵列(field-programmable gate array，简称FPGA)，通用阵列逻辑(generic array logic,简称GAL)或其任意组合。
参见图16所示，该基站还可以包括存储器1604。该存储器1604可以包括易失性存储器(volatile memory)，例如随机存取存储器(random-access memory，简称RAM)；存储器也可以包括非易失性存储器(non-volatile memory)，例如快闪存储器(flash memory)， 硬盘(hard disk drive，简称HDD)或固态硬盘(solid-state drive，简称SSD)；存储器1604还可以包括上述种类的存储器的组合。
可选地，存储器1604还可以用于存储程序指令，处理器1602调用该存储器1604中存储的程序指令，可以执行图2至图14中所示实施例中的一个或多个步骤，或其中可选的实施方式，实现上述方法中基站行为的功能。
该处理器1602，执行如下步骤：
获取传输时间单元内的解调导频图案，该解调导频图案包括第一码字的第一解调导频图案和第二码字的第二解调导频图案，该第一解调导频图案指示第一集合中各正交频分复用OFDM符号的时频资源，该第二解调导频图案指示第二集合中各OFDM符号的时频资源，该第一码字的调制编码MCS指示值大于该第二码字的MCS指示值；
该收发器1601，执行如下步骤：
按照该导频图案将导频信号映射在时频资源上，发送该导频信号，其中，该第一集合中的第1个OFDM符号的发送时刻在该第二集合中的第1个OFDM符号的发送时刻之前，该第一集合中的第1个OFDM符号为该第一集合中的发送时刻最早的OFDM符号。
本实施例中，该收发器1601还执行所有数据收发的步骤，该处理器还执行上述实施例中所有数据的处理步骤。
本实施例中，该基站在利用时频资源发送导频信号时，使得该第一集合中的第一个OFDM符号的发送时刻在该第二集合中的第一个OFDM符号的发送时刻之前。即在整个导频信号的传输过程中，接收设备在接收到第一码字的时频资源之后就可以立即启动该第一码字的译码，从而提前了该第一码字的译码时刻，进而提前了该第二码字的译码时刻。同时，由于该第一码字的MCS指示值大于该第二码字的MCS指示值，因此，该第一码字的译码成功率较高。由于该第二码字的译码要基于该第一码字的译码结果，因此，该第一码字译码成功率较高，可以有效的提高该第二码字的译码成功率。
具体请参阅图17，本申请实施例中接收设备的一个实施例包括：
处理模块1701，用于获取传输时间单元内的解调导频图案，该解调导频图案包括第一码字的第一解调导频图案和第二码字第二解调导频图案，该第一解调导频图案指示第一集合中各正交频分复用OFDM符号的时频资源，该第二解调导频图案指示第二集合中各OFDM符号的时频资源，该第一码字的调制编码MCS指示值大于该第二码字的MCS指示值；
接收模块1702，用于按照该解调导频图案接收导频信号，该导频信号由基站按照该解调导频图映射在时频资源上后发送，其中，该第一集合中的第1个OFDM符号的发送时刻在该第二集合中的第1个OFDM符号的发送时刻之前，该第一集合中的第1个OFDM符号为该第一集合中的发送时刻最早的OFDM符号。
可选的，该第一集合中的第1个OFDM符号的时频资源单元RE数目大于该第二集合中的第1个OFDM符号的RE数目。
可选的，该第一集合中至少存在一个OFDM符号的RE数目小于该第一集合中的第1个OFDM符号的RE数目。
可选的，该第一集合中至少存在一个OFDM符号的RE集合为该第一集合中的第1个OFDM 符号的RE集合的真子集；
或，
该第一集合中至少存在一个OFDM符号的RE集合与该第一集合中的第1个OFDM符号的RE集合的交集为空集。
可选的，该第二集合中至少存在一个OFDM符号的RE数目小于该第二集合中的第1个OFDM符号的RE数目。
可选的，该第二集合中至少存在一个OFDM符号的RE集合为该第二集合中的第1个OFDM符号的RE集合的真子集；
或，
该第二集合中至少存在一个OFDM符号的RE集合与该第二集合中的第1个OFDM符号的RE集合的交集为空集。
可选的，该第二集合中至少存在一个OFDM符号RE数目大于该第二集合中的第1个OFDM符号的RE数目。
可选的，该接收模块1702，还用于接收导频配置信息，该导频配置信息用于指示在该第二集合中各OFDM符号按照发送时刻由早至晚的排序中各OFDM符号的RE数目增加或者减少。
可选的，该第一解调导频图案指示该第一集合中的各OFDM符号内采用长度为4的正交码进行频域码分复用；
该第二解调导频图案指示该第二集合中的各OFDM符号内采用长度为4的正交码进行频域码分复用。
本实施例中，该基站在利用时频资源发送导频信号时，使得该第一集合中的第一个OFDM符号的发送时刻在该第二集合中的第一个OFDM符号的发送时刻之前。即在整个导频信号的传输过程中，接收设备在接收到第一码字的时频资源之后就可以立即启动该第一码字的译码，从而提前了该第一码字的译码时刻，进而提前了该第二码字的译码时刻。同时，由于该第一码字的MCS指示值大于该第二码字的MCS指示值，因此，该第一码字的译码成功率较高。由于该第二码字的译码要基于该第一码字的译码结果，因此，该第一码字译码成功率较高，可以有效的提高该第二码字的译码成功率。
具体请参阅图18，本申请实施例中接收设备的另一个实施例包括：
收发器1801，处理器1802，总线1803；
该收发器1801与该处理器1802通过该总线1803相连；
总线1803可以是PCI总线或EISA总线等。该总线可以分为地址总线、数据总线、控制总线等。为便于表示，图18中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
处理器1802可以是CPU，NP或者CPU和NP的组合。
处理器1802还可以进一步包括硬件芯片。上述硬件芯片可以是ASIC，PLD或其组合。上述PLD可以是CPLD，FPGA，GAL或其任意组合。
参见图18所示，该接收设备还可以包括存储器1804。该存储器1804可以包括易失性 存储器(volatile memory)，例如RAM；存储器也可以包括非易失性存储器(non-volatile memory)，例如快闪存储器(flash memory)，HDD或SSD；存储器1804还可以包括上述种类的存储器的组合。
可选地，存储器1804还可以用于存储程序指令，处理器1802调用该存储器1804中存储的程序指令，可以执行图2至图14中所示实施例中的一个或多个步骤，或其中可选的实施方式，实现上述方法中接收设备行为的功能。
该处理器1802，执行如下步骤：获取传输时间单元内的解调导频图案，该解调导频图案包括第一码字的第一解调导频图案和第二码字第二解调导频图案，该第一解调导频图案指示第一集合中各正交频分复用OFDM符号的时频资源，该第二解调导频图案指示第二集合中各OFDM符号的时频资源，该第一码字的调制编码MCS指示值大于该第二码字的MCS指示值；
该收发器1801，执行如下步骤：
按照该解调导频图案接收导频信号，该导频信号由基站按照该解调导频图映射在时频资源上后发送，其中，该第一集合中的第1个OFDM符号的发送时刻在该第二集合中的第1个OFDM符号的发送时刻之前，该第一集合中的第1个OFDM符号为该第一集合中的发送时刻最早的OFDM符号。
本实施例中，该处理器1802还执行上述实施例中所有数据的处理步骤，该收发器1801还执行上述实施例中所有数据的收发步骤。
本实施例中，该基站在利用时频资源发送导频信号时，使得该第一集合中的第一个OFDM符号的发送时刻在该第二集合中的第一个OFDM符号的发送时刻之前。即在整个导频信号的传输过程中，接收设备在接收到第一码字的时频资源之后就可以立即启动该第一码字的译码，从而提前了该第一码字的译码时刻，进而提前了该第二码字的译码时刻。同时，由于该第一码字的MCS指示值大于该第二码字的MCS指示值，因此，该第一码字的译码成功率较高。由于该第二码字的译码要基于该第一码字的译码结果，因此，该第一码字译码成功率较高，可以有效的提高该第二码字的译码成功率。
具体请参阅图19，本申请实施例中基站的另一个实施例包括：
处理模块1901，用于确定秩指示RI和导频配置信息，并根据该导频配置信息从该RI对应的解调导频图案集合中确定传输时间单元内的目标解调导频图案，该解调导频图案集合中包括至少两种解调导频图案，该解调导频图案集合中的各解调导频图案各指示一种正交频分复用OFDM符号集合中各OFDM符号的时频资源，且该解调导频图案集合中的各解调导频图案指示的各OFDM符号的时频资源单元RE的数目不同以及该解调导频图案集合中的各解调导频图案采用的正交码图案不同，该正交码图案包括频域一维扩频图案和时频两维扩频图案，该至少两种解调导频图案是同一种子帧类型下的解调导频图案；
发送模块1902，用于按照该目标导频图案将导频信号映射在时频资源上，并发送该导频信号、该导频配置信息和RI。
可选的，该目标解调导频图案指示的OFDM符号集合中包括N组OFDM符号，该N组OFDM符号在按照时域位置由前至后的排序中，该目标解调导频图案指示的该OFDM符号集合中至 少存在一个OFDM符号的RE数目小于该目标解调导频图案指示的该OFDM符号集合中的第1组OFDM符号的RE数目，该目标解调导频图案指示的OFDM符号集合中的各组OFDM符号包括至少一个OFDM符号，该N为正整数。
可选的，该目标解调导频图案指示的OFDM符号集合中至少存在一组OFDM符号的RE集合与该目标解调导频图案指示的OFDM符号集合中的第1组OFDM符号的RE集合的交集为空集；
或，
该目标解调导频图案指示的OFDM符号集合中至少存在一组OFDM符号的RE集合为该目标解调导频图案指示的OFDM符号集合中的第1组OFDM符号的RE集合的真子集。
可选的，当该RI等于1或者2时，该解调导频图案集合中的解调导频图案的正交码图案包括各组OFDM符号上采用长度为2的正交码进行频域码分复用，每组OFDM符号包括一个OFDM符号；
和，
各组OFDM符号上采用长度为4的正交码进行频域码分复用，每组OFDM符号包括一个OFDM符号；
和，
各组OFDM符号上采用长度为8的正交码进行频域和时域的码分复用，其中该频域码分复用长度为4，该时域码分复用长度为2，每组OFDM符号包括时域上连续的2个OFDM符号。
可选的，当该RI等于3或者4时，该解调导频图案集合中的解调导频图案的正交码图案包括各组OFDM符号内采用长度为4的正交码进行频域码分复用，每组OFDM符号包括一个OFDM符号；
和，
各组OFDM符号内采用长度为8的正交码进行频域和时域的码分复用，其中该频域码分复用长度为4，该时域码分复用长度为2每组OFDM符号包括时域上连续的2个OFDM符号。
可选的，当该RI属于集合{5，6，7，8}时，该解调导频图案集合中的解调导频图案的正交码图案包括各组OFDM符号内采用长度为8的正交码进行频域和时域的码分复用，其中该频域码分复用长度为4，该时域码分复用长度为2，每组OFDM符号包括时域上连续的2个OFDM符号；
和，
各组OFDM符号内的第一个OFDM符号采用长度4的正交码进行频域码分复用，在第二OFDM符号上采用长度4的正交码进行频域码分复用，每组OFDM符号包括时域上连续的2个OFDM符号。
本实施例中，该RI对应的解调导频图案集合中包含的各解调导频图案采用频域一维扩频图案和时频两维扩频图案的正效码图案，可以有效增加扩频增益，从而提高数据检测性能。同时，该RI对应的解调导频图案集合中的各解调导频图案其所占用的RE的数目不同， 可以在增加复用用户数的情况下，保证信道估计性能。
具体请参阅图20，本申请实施例中基站的另一个实施例包括：
收发器2001，处理器2002，总线2003；
该收发器2001与该处理器2002通过该总线2003相连；
总线2003可以是PCI总线或EISA总线等。该总线可以分为地址总线、数据总线、控制总线等。为便于表示，图20中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
处理器2002可以是CPU，NP或者CPU和NP的组合。
处理器2002还可以进一步包括硬件芯片。上述硬件芯片可以是ASIC，PLD或其组合。上述PLD可以是CPLD，FPGA，GAL或其任意组合。
参见图20所示，该基站还可以包括存储器2004。该存储器2004可以包括易失性存储器(volatile memory)，例如RAM；存储器也可以包括非易失性存储器(non-volatile memory)，例如快闪存储器(flash memory)，HDD或SSD；存储器2004还可以包括上述种类的存储器的组合。
可选地，存储器2004还可以用于存储程序指令，处理器2002调用该存储器2004中存储的程序指令，可以执行图2至图14中所示实施例中的一个或多个步骤，或其中可选的实施方式，实现上述方法中基站行为的功能。
该处理器2002，执行如下步骤：确定秩指示RI和导频配置信息，并根据该导频配置信息从该RI对应的解调导频图案集合中确定传输时间单元内的目标解调导频图案，该解调导频图案集合中包括至少两种解调导频图案，该解调导频图案集合中的各解调导频图案各指示一种正交频分复用OFDM符号集合中各OFDM符号的时频资源，且该解调导频图案集合中的各解调导频图案指示的各OFDM符号的时频资源单元RE的数目不同以及该解调导频图案集合中的各解调导频图案采用的正交码图案不同，该正交码图案包括频域一维扩频图案和时频两维扩频图案，该至少两种解调导频图案是同一种子帧类型下的解调导频图案；
该收发器2001，执行如下步骤：
按照该目标导频图案将导频信号映射在时频资源上，并发送该导频信号、该导频配置信息和RI。本实施例中，该收发器2001还执行上述实施例中所有数据的收发步骤，该处理器2002还执行上述实施例中所有数据的处理步骤。
本实施例中，该RI对应的解调导频图案集合中包含的各解调导频图案采用频域一维扩频图案和时频两维扩频图案的正效码图案，可以有效增加扩频增益，从而提高数据检测性能。同时，该RI对应的解调导频图案集合中的各解调导频图案其所占用的RE的数目不同，可以在增加复用用户数的情况下，保证信道估计性能。
具体请参阅图21，本申请实施例中接收设备的另一个实施例包括：
处理模块2101，用于获取传输时间单元内的目标解调导频图案，该目标解调导频图由基站根据导频配置信息从秩指示RI对应的解调导频图案集合中确定，该解调导频图案集合中包括至少两种解调导频图案，该解调导频图案集合中的各解调导频图案各指示一种正交频分复用OFDM符号集合中各OFDM符号的时频资源，且该解调导频图案集合中的各解调导 频图案指示的各OFDM符号的时频资源单元RE的数目不同以及该解调导频图案集合中的各解调导频图案采用的正交码图案不同，该正交码图案包括频域一维扩频图案和时频两维扩频图案，该至少两种解调导频图案是同一种子帧类型下的解调导频图案；
接收模块2102，用于按照该目标解调导频图案接收导频信号，该导频信号由该基站按照该目标解调导频图案映射在时频资源上后发送。
可选的，该目标解调导频图案指示的OFDM符号集合中包括N组OFDM符号，该N组OFDM符号在按照时域位置由前至后的排序中，该目标解调导频图案指示的该OFDM符号集合中至少存在一个OFDM符号的RE数目小于该目标解调导频图案指示的该OFDM符号集合中的第1组OFDM符号的RE数目，该目标解调导频图案指示的OFDM符号集合中的各组OFDM符号包括至少一个OFDM符号，该N为正整数。
可选的，该目标解调导频图案指示的OFDM符号集合中至少存在一组OFDM符号的RE集合与该目标解调导频图案指示的OFDM符号集合中的第1组OFDM符号的RE集合的交集为空集；
或，
该目标解调导频图案指示的OFDM符号集合中至少存在一组OFDM符号的RE集合为该目标解调导频图案指示的OFDM符号集合中的第1组OFDM符号的RE集合的真子集。
可选的，当该RI等于1或者2时，该解调导频图案集合中的解调导频图案的正交码图案包括各组OFDM符号内采用长度为2的正交码进行频域码分复用，每组OFDM符号包括一个OFDM符号；
和，
各组OFDM符号内采用长度为4的正交码进行频域码分复用，每组OFDM符号包括一个OFDM符号；
和，
各组OFDM符号内采用长度为8的正交码进行频域和时域的码分复用，其中该频域码分复用长度为4，该时域码分复用长度为2，每组OFDM符号包括时域上连续的2个OFDM符号。
可选的，当该RI等于3或者4时，该解调导频图案集合中的解调导频图案的正交码图案包括各组OFDM符号内采用长度为4的正交码进行频域码分复用，每组OFDM符号包括一个OFDM符号；
和，
各组OFDM符号内采用长度为8的正交码进行频域和时域的码分复用，其中该频域码分复用长度为4，该时域码分复用长度为2每组OFDM符号包括时域上连续的2个OFDM符号。
可选的，当该RI属于集合{5，6，7，8}时，该解调导频图案集合中的解调导频图案的正交码图案包括各组OFDM符号内采用长度为8的正交码进行频域和时域的码分复用，其中该频域码分复用长度为4，该时域码分复用长度为2，每组OFDM符号包括时域上连续的2个OFDM符号；
和，
各组OFDM符号内的第一个OFDM符号采用长度4的正交码进行频域码分复用，在第二OFDM符号上采用长度4的正交码进行频域码分复用，每组OFDM符号包括时域上连续的2个OFDM符号。
本实施例中，该RI对应的解调导频图案集合中包含的各解调导频图案采用频域一维扩频图案和时频两维扩频图案的正效码图案，可以有效增加扩频增益，从而提高数据检测性能。同时，该RI对应的解调导频图案集合中的各解调导频图案其所占用的RE的数目不同，可以在增加复用用户数的情况下，保证信道估计性能。
具体请参阅图22，本申请实施例中接收设备的另一个实施例包括：
收发器2201，处理器2202，总线2203；
该收发器2201与该处理器2202通过该总线2203相连；
总线2203可以是PCI总线或EISA总线等。该总线可以分为地址总线、数据总线、控制总线等。为便于表示，图22中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
处理器2202可以是CPU，NP或者CPU和NP的组合。
处理器2202还可以进一步包括硬件芯片。上述硬件芯片可以是ASIC，PLD或其组合。上述PLD可以是CPLD，FPGA，GAL或其任意组合。
参见图22所示，该接收设备还可以包括存储器2204。该存储器2204可以包括易失性存储器(volatile memory)，例如RAM；存储器也可以包括非易失性存储器(non-volatile memory)，例如快闪存储器(flash memory)，HDD或SSD；存储器2204还可以包括上述种类的存储器的组合。
可选地，存储器2204还可以用于存储程序指令，处理器2202调用该存储器2204中存储的程序指令，可以执行图2至图14中所示实施例中的一个或多个步骤，或其中可选的实施方式，实现上述方法中接收设备行为的功能。
该处理器2202，执行如下步骤：
获取传输时间单元内的目标解调导频图案，该目标解调导频图由基站根据导频配置信息从秩指示RI对应的解调导频图案集合中确定，该解调导频图案集合中包括至少两种解调导频图案，该解调导频图案集合中的各解调导频图案各指示一种正交频分复用OFDM符号集合中各OFDM符号的时频资源，且该解调导频图案集合中的各解调导频图案指示的各OFDM符号的时频资源单元RE的数目不同以及该解调导频图案集合中的各解调导频图案采用的正交码图案不同，该正交码图案包括频域一维扩频图案和时频两维扩频图案，该至少两种解调导频图案是同一种子帧类型下的解调导频图案；
该收发器2201，执行如下步骤：
按照该目标解调导频图案接收导频信号，该导频信号由该基站按照该目标解调导频图案映射在时频资源上后发送。
本实施例中，该收发器2201还执行上述实施例中所有数据的收发步骤，该处理器2202还执行上述实施例中所有数据的处理步骤。
本实施例中，该RI对应的解调导频图案集合中包含的各解调导频图案采用频域一维扩频图案和时频两维扩频图案的正效码图案，可以有效增加扩频增益，从而提高数据检测性能。同时，该RI对应的解调导频图案集合中的各解调导频图案其所占用的RE的数目不同，可以在增加复用用户数的情况下，保证信道估计性能。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统，装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统，装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或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中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，以上实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的精神和范围。

Claims (60)

  1. 一种数据处理方法，其特征在于，包括：
    基站获取传输时间单元内的解调导频图案，所述解调导频图案包括第一码字的第一解调导频图案和第二码字的第二解调导频图案，所述第一解调导频图案指示第一集合中各正交频分复用OFDM符号的时频资源，所述第二解调导频图案指示第二集合中的各OFDM符号的时频资源，所述第一码字的调制编码MCS指示值大于所述第二码字的MCS指示值；
    所述基站按照所述解调导频图案将导频信号映射在时频资源上，发送所述导频信号，其中，所述第一集合中的第1个OFDM符号的发送时刻在所述第二集合中的第1个OFDM符号的发送时刻之前，所述第一集合中的第1个OFDM符号为所述第一集合中的发送时刻最早的OFDM符号，所述第二集合中的第1个OFDM符号为所述第二集合中的发送时刻最早的OFDM符号。
  2. 根据权利要求1所述的方法，其特征在于，所述第一集合中的第1个OFDM符号的时频资源单元RE数目大于所述第二集合中的第1个OFDM符号的RE数目。
  3. 根据权利要求1所述的方法，其特征在于，所述第一集合中至少存在一个OFDM符号的RE数目小于所述第一集合中的第1个OFDM符号的RE数目。
  4. 根据权利要求3所述的方法，其特征在于，所述第一集合中至少存在一个OFDM符号的RE集合为所述第一集合中的第1个OFDM符号的RE集合的真子集；
    或，
    所述第一集合中至少存在一个OFDM符号的RE集合与所述第一集合中的第1个OFDM符号的RE集合的交集为空集。
  5. 根据权利要求1所述的方法，其特征在于，所述第二集合中至少存在一个OFDM符号的RE数目小于所述第二集合中的第1个OFDM符号的RE数目。
  6. 根据权利要求5所述的方法，其特征在于，所述第二集合中至少存在一个OFDM符号的RE集合为所述第二集合中的第1个OFDM符号的RE集合的真子集；
    或，
    所述第二集合中至少存在一个OFDM符号的RE集合与所述第二集合中的第1个OFDM符号的RE集合的交集为空集。
  7. 根据权利要求1所述的方法，其特征在于，所述第二集合中至少存在一个OFDM符号的RE数目大于所述第二集合中的第1个OFDM符号的RE数目。
  8. 根据权利要求5至7中任一项所述的方法，其特征在于，所述方法还包括：
    所述基站发送导频配置信息，所述导频配置信息用于指示在所述第二集合中各OFDM符号按照发送时刻由早至晚的排序中各OFDM符号的RE数目增加或者减少。
  9. 根据权利要求1至8中任一项所述的方法，其特征在于，所述第一解调导频图案指示所述第一集合中各OFDM符号内采用长度为4的正交码进行频域码分复用；
    所述第二解调导频图案指示所述第二集合中的各OFDM符号内采用长度为4的正交码进行频域码分复用。
  10. 一种数据处理方法，其特征在于，包括：
    接收设备获取传输时间单元内的解调导频图案，所述解调导频图案包括第一码字的第一解调导频图案和第二码字的第二解调导频图案，所述第一解调导频图案指示第一集合中各OFDM符号的时频资源，所述第二解调导频图案指示第二集合中各OFDM符号的时频资源，所述第一码字的调制编码MCS指示值大于所述第二码字的MCS指示值；
    所述接收设备按照所述解调导频图案接收导频信号，所述导频信号由基站按照所述解调导频图映射在时频资源上后发送，其中，所述第一集合中的第1个OFDM符号的发送时刻在所述第二集合中的第1个OFDM符号的发送时刻之前，所述第一集合中的第1个OFDM符号为所述第一集合中的发送时刻最早的OFDM符号，所述第二集合中的第1个OFDM符号为所述第二集合中的发送时刻最早的OFDM符号。
  11. 根据权利要求10所述的方法，其特征在于，所述第一集合中的第1个OFDM符号的时频资源单元RE数目大于所述第二集合中的第1个OFDM符号的RE数目。
  12. 根据权利要求10所述的方法，其特征在于，所述第一集合中至少存在一个OFDM符号的RE数目小于所述第一集合中的第1个OFDM符号的RE数目。
  13. 根据权利要求12所述的方法，其特征在于，所述第一集合中至少存在一个OFDM符号的RE集合为所述第一集合中的第1个OFDM符号的RE集合的真子集；
    或，
    所述第一集合中至少存在一个OFDM符号的RE集合与所述第一集合中的第1个OFDM符号的RE集合的交集为空集。
  14. 根据权利要求10所述的方法，其特征在于，所述第二集合中至少存在一个OFDM符号的RE数目小于所述第二集合中的第1个OFDM符号的RE数目。
  15. 根据权利要求14所述的方法，其特征在于，所述第二集合中至少存在一个OFDM符号的RE集合为所述第二集合中的第1个OFDM符号的RE集合的真子集；
    或，
    所述第二集合中至少存在一个OFDM符号的RE集合与所述第二集合中的第1个OFDM符号的RE集合的交集为空集。
  16. 根据权利要求10所述的方法，其特征在于，所述第二集合中至少存在一个OFDM符号RE数目大于所述第二集合中的第1个OFDM符号的RE数目。
  17. 根据权利要求14至16中任一项所述的方法，其特征在于，所述方法还包括：
    所述接收设备接收导频配置信息，所述导频配置信息用于指示在所述第二集合中各OFDM符号按照发送时刻由早至晚的排序中各OFDM符号的RE数目增加或者减少。
  18. 根据权利要求10至17中任一项所述的方法，其特征在于，所述第一解调导频图案指示所述第一集合中的各OFDM符号内采用长度为4的正交码进行频域码分复用；
    所述第二解调导频图案指示所述第二集合中的各OFDM符号内采用长度为4的正交码进行频域码分复用。
  19. 一种基站，其特征在于，包括：
    处理模块，用于获取传输时间单元内的解调导频图案，所述解调导频图案包括第一码字的第一解调导频图案和第二码字的第二解调导频图案，所述第一解调导频图案指示第一 集合中各正交频分复用OFDM符号的时频资源，所述第二解调导频图案指示第二集合中各OFDM符号的时频资源，所述第一码字的调制编码MCS指示值大于所述第二码字的MCS指示值；
    发送模块，用于按照所述导频图案将导频信号映射在时频资源上，发送所述导频信号，其中，所述第一集合中的第1个OFDM符号的发送时刻在所述第二集合中的第1个OFDM符号的发送时刻之前，所述第一集合中的第1个OFDM符号为所述第一集合中的发送时刻最早的OFDM符号，所述第二集合中的第1个OFDM符号为所述第二集合中的发送时刻最早的OFDM符号。
  20. 根据权利要求19所述的基站，其特征在于，所述第一集合中的第1个OFDM符号的时频资源单元RE数目大于所述第二集合中的第1个OFDM符号的RE数目。
  21. 根据权利要求19所述的基站，其特征在于，所述第一集合中至少存在一个OFDM符号的RE数目小于所述第一集合中的第1个OFDM符号的RE数目。
  22. 根据权利要求21所述的基站，其特征在于，所述第一集合中至少存在一个OFDM符号的RE集合为所述第一集合中的第1个OFDM符号的RE集合的真子集；
    或，
    所述第一集合中至少存在一个OFDM符号的RE集合与所述第一集合中的第1个OFDM符号的RE集合的交集为空集。
  23. 根据权利要求19所述的基站，其特征在于，所述第二集合中至少存在一个OFDM符号的RE数目小于所述第二集合中的第1个OFDM符号的RE数目。
  24. 根据权利要求23所述的基站，其特征在于，
    所述第二集合中至少存在一个OFDM符号的RE集合为所述第二集合中的第1个OFDM符号的RE集合的真子集；
    或，
    所述第二集合中至少存在一个OFDM符号的RE集合与所述第二集合中的第1个OFDM符号的RE集合的交集为空集。
  25. 根据权利要求19所述的基站，其特征在于，所述第二集合中至少存在一个OFDM符号的RE数目大于所述第二集合中的第1个OFDM符号的RE数目。
  26. 根据权利要求23至25中任一项所述的基站，其特征在于，所述发送模块，还用于发送导频配置信息，所述导频配置信息用于指示在所述第二集合中各OFDM符号按照发送时刻由早至晚的排序中各OFDM符号的RE数目增加或者减少。
  27. 根据权利要求19至26中任一项所述的基站，其特征在于，所述第一解调导频图案指示所述第一集合中各OFDM符号内采用长度为4的正交码进行频域码分复用；
    所述第二解调导频图案指示所述第二集合中的各OFDM符号内采用长度为4的正交码进行频域码分复用。
  28. 一种接收设备，其特征在于，包括：
    处理模块，用于获取传输时间单元内的解调导频图案，所述解调导频图案包括第一码字的第一解调导频图案和第二码字的第二解调导频图案，所述第一解调导频图案指示第一 集合中各正交频分复用OFDM符号的时频资源，所述第二解调导频图案指示第二集合中各OFDM符号的时频资源，所述第一码字的调制编码MCS指示值大于所述第二码字的MCS指示值；
    接收模块，用于按照所述解调导频图案接收导频信号，所述导频信号由基站按照所述解调导频图映射在时频资源上后发送，其中，所述第一集合中的第1个OFDM符号的发送时刻在所述第二集合中的第1个OFDM符号的发送时刻之前，所述第一集合中的第1个OFDM符号为所述第一集合中的发送时刻最早的OFDM符号，所述第二集合中的第1个OFDM符号为所述第二集合中的发送时刻最早的OFDM符号。
  29. 根据权利要求28所述的接收设备，其特征在于，所述第一集合中的第1个OFDM符号的时频资源单元RE数目大于所述第二集合中的第1个OFDM符号的RE数目。
  30. 根据权利要求28所述的接收设备，其特征在于，所述第一集合中至少存在一个OFDM符号的RE数目小于所述第一集合中的第1个OFDM符号的RE数目。
  31. 根据权利要求30所述的接收设备，其特征在于，所述第一集合中至少存在一个OFDM符号的RE集合为所述第一集合中的第1个OFDM符号的RE集合的真子集；
    或，
    所述第一集合中至少存在一个OFDM符号的RE集合与所述第一集合中的第1个OFDM符号的RE集合的交集为空集。
  32. 根据权利要求28所述的接收设备，其特征在于，所述第二集合中至少存在一个OFDM符号的RE数目小于所述第二集合中的第1个OFDM符号的RE数目。
  33. 根据权利要求32所述的接收设备，其特征在于，
    所述第二集合中至少存在一个OFDM符号的RE集合为所述第二集合中的第1个OFDM符号的RE集合的真子集；
    或，
    所述第二集合中至少存在一个OFDM符号的RE集合与所述第二集合中的第1个OFDM符号的RE集合的交集为空集。
  34. 根据权利要求28所述的接收设备，其特征在于，所述第二集合中至少存在一个OFDM符号RE数目大于所述第二集合中的第1个OFDM符号的RE数目。
  35. 根据权利要求32至34中任一项所述的接收设备，其特征在于，所述接收模块，还用于接收导频配置信息，所述导频配置信息用于指示在所述第二集合中各OFDM符号按照发送时刻由早至晚的排序中各OFDM符号的RE数目增加或者减少。
  36. 根据权利要求28至35中任一项所述的接收设备，其特征在于，所述第一解调导频图案指示所述第一集合中的各OFDM符号内采用长度为4的正交码进行频域码分复用；
    所述第二解调导频图案指示所述第二集合中的各OFDM符号内采用长度为4的正交码进行频域码分复用。
  37. 一种数据处理方法，其特征在于，包括：
    基站确定秩指示RI和导频配置信息，并根据所述导频配置信息从所述RI对应的解调导频图案集合中确定传输时间单元内的目标解调导频图案，所述解调导频图案集合中包括 至少两种解调导频图案，所述解调导频图案集合中的各解调导频图案各指示一种正交频分复用OFDM符号集合中各OFDM符号的时频资源，且该解调导频图案集合中的各解调导频图案指示的各OFDM符号的时频资源单元RE的数目不同以及所述解调导频图案集合中的各解调导频图案采用的正交码图案不同，所述正交码图案包括频域一维扩频图案和时频两维扩频图案，所述至少两种解调导频图案是同一种子帧类型下的解调导频图案；
    所述基站按照所述目标导频图案将导频信号映射在时频资源上，并发送所述导频信号、所述导频配置信息和RI。
  38. 根据权利要求37所述的方法，其特征在于，所述目标解调导频图案指示的OFDM符号集合中包括N组OFDM符号，所述N组OFDM符号在按照时域位置由前至后的排序中，所述目标解调导频图案指示的所述OFDM符号集合中至少存在一个OFDM符号的RE数目小于所述目标解调导频图案指示的所述OFDM符号集合中的第1组OFDM符号的RE数目，所述目标解调导频图案指示的OFDM符号集合中的各组OFDM符号包括至少一个OFDM符号，所述N为正整数。
  39. 根据权利要求38所述的方法，其特征在于，所述目标解调导频图案指示的OFDM符号集合中至少存在一组OFDM符号的RE集合与所述目标解调导频图案指示的OFDM符号集合中的第1组OFDM符号的RE集合的交集为空集；
    或，
    所述目标解调导频图案指示的OFDM符号集合中至少存在一组OFDM符号的RE集合为所述目标解调导频图案指示的OFDM符号集合中的第1组OFDM符号的RE集合的真子集。
  40. 根据权利要求37至39中任一项所述的方法，其特征在于，当所述RI等于1或者2时，所述解调导频图案集合中的解调导频图案的正交码图案包括各组OFDM符号上采用长度为2的正交码进行频域码分复用，每组OFDM符号包括一个OFDM符号；
    和，
    各组OFDM符号上采用长度为4的正交码进行频域码分复用，每组OFDM符号包括一个OFDM符号；
    和，
    各组OFDM符号上采用长度为8的正交码进行频域和时域的码分复用，其中所述频域码分复用长度为4，所述时域码分复用长度为2，每组OFDM符号包括时域上连续的2个OFDM符号。
  41. 根据权利要求37至39中任一项所述的方法，其特征在于，当所述RI等于3或者4时，所述解调导频图案集合中的解调导频图案的正交码图案包括各组OFDM符号上采用长度为4的正交码进行频域码分复用，每组OFDM符号包括一个OFDM符号；
    和，
    各组OFDM符号上采用长度为8的正交码进行频域和时域的码分复用，其中所述频域码分复用长度为4，所述时域码分复用长度为2每组OFDM符号包括时域上连续的2个OFDM符号。
  42. 根据权利要求37至39中任一项所述的方法，其特征在于，当所述RI属于集合{5， 6，7，8}时，所述解调导频图案集合中的解调导频图案的正交码图案包括各组OFDM符号上采用长度为8的正交码进行频域和时域的码分复用，其中所述频域码分复用长度为4，所述时域码分复用长度为2，每组OFDM符号包括时域上连续的2个OFDM符号；
    和，
    各组OFDM符号上的第一个OFDM符号采用长度4的正交码进行频域码分复用，在第二OFDM符号上采用长度4的正交码进行频域码分复用，每组OFDM符号包括时域上连续的2个OFDM符号。
  43. 一种数据处理方法，其特征在于，包括：
    接收设备获取传输时间单元内的目标解调导频图案，所述目标解调导频图由基站根据导频配置信息从秩指示RI对应的解调导频图案集合中确定，所述解调导频图案集合中包括至少两种解调导频图案，所述解调导频图案集合中的各解调导频图案各指示一种正交频分复用OFDM符号集合中各OFDM符号的时频资源，且该解调导频图案集合中的各解调导频图案指示的各OFDM符号的时频资源单元RE的数目不同以及所述解调导频图案集合中的各解调导频图案采用的正交码图案不同，所述正交码图案包括频域一维扩频图案和时频两维扩频图案，所述至少两种解调导频图案是同一种子帧类型下的解调导频图案；
    所述接收设备按照所述目标解调导频图案接收导频信号，所述导频信号由所述基站按照所述目标解调导频图案映射在时频资源上后发送。
  44. 根据权利要求43所述的方法，其特征在于，所述目标解调导频图案指示的OFDM符号集合中包括N组OFDM符号，所述N组OFDM符号在按照时域位置由前至后的排序中，所述目标解调导频图案指示的所述OFDM符号集合中至少存在一个OFDM符号的RE数目小于所述目标解调导频图案指示的所述OFDM符号集合中的第1组OFDM符号的RE数目，所述目标解调导频图案指示的OFDM符号集合中的各组OFDM符号包括至少一个OFDM符号，所述N为正整数。
  45. 根据权利要求44所述的方法，其特征在于，所述目标解调导频图案指示的OFDM符号集合中至少存在一组OFDM符号的RE集合与所述目标解调导频图案指示的OFDM符号集合中的第1组OFDM符号的RE集合的交集为空集；
    或，
    所述目标解调导频图案指示的OFDM符号集合中至少存在一组OFDM符号的RE集合为所述目标解调导频图案指示的OFDM符号集合中的第1组OFDM符号的RE集合的真子集。
  46. 根据权利要求43至45中任一项所述的方法，其特征在于，当所述RI等于1或者2时，所述解调导频图案集合中的解调导频图案的正交码图案包括各组OFDM符号内采用长度为2的正交码进行频域码分复用，每组OFDM符号包括一个OFDM符号；
    和，
    各组OFDM符号上采用长度为4的正交码进行频域码分复用，每组OFDM符号包括一个OFDM符号；
    和，
    各组OFDM符号上采用长度为8的正交码进行频域和时域的码分复用，其中所述频域 码分复用长度为4，所述时域码分复用长度为2，每组OFDM符号包括时域上连续的2个OFDM符号。
  47. 根据权利要求43至45中任一项所述的方法，其特征在于，当所述RI等于3或者4时，所述解调导频图案集合中的解调导频图案的正交码图案包括各组OFDM符号上采用长度为4的正交码进行频域码分复用，每组OFDM符号包括一个OFDM符号；
    和，
    各组OFDM符号上采用长度为8的正交码进行频域和时域的码分复用，其中所述频域码分复用长度为4，所述时域码分复用长度为2每组OFDM符号包括时域上连续的2个OFDM符号。
  48. 根据权利要求43至45中任一项所述的方法，其特征在于，当所述RI属于集合{5，6，7，8}时，所述解调导频图案集合中的解调导频图案的正交码图案包括各组OFDM符号上采用长度为8的正交码进行频域和时域的码分复用，其中所述频域码分复用长度为4，所述时域码分复用长度为2，每组OFDM符号包括时域上连续的2个OFDM符号；
    和，
    各组OFDM符号上的第一个OFDM符号采用长度4的正交码进行频域码分复用，在第二OFDM符号上采用长度4的正交码进行频域码分复用，每组OFDM符号包括时域上连续的2个OFDM符号。
  49. 一种基站，其特征在于，包括：
    处理模块，用于确定秩指示RI和导频配置信息，并根据所述导频配置信息从所述RI对应的解调导频图案集合中确定传输时间单元内的目标解调导频图案，所述解调导频图案集合中包括至少两种解调导频图案，所述解调导频图案集合中的各解调导频图案各指示一种正交频分复用OFDM符号集合中各OFDM符号的时频资源，且该解调导频图案集合中的各解调导频图案指示的各OFDM符号的时频资源单元RE的数目不同以及所述解调导频图案集合中的各解调导频图案采用的正交码图案不同，所述正交码图案包括频域一维扩频图案和时频两维扩频图案，所述至少两种解调导频图案是同一种子帧类型下的解调导频图案；
    发送模块，用于按照所述目标导频图案将导频信号映射在时频资源上，并发送所述导频信号、所述导频配置信息和RI。
  50. 根据权利要求49所述的基站，其特征在于，所述目标解调导频图案指示的OFDM符号集合中包括N组OFDM符号，所述N组OFDM符号在按照时域位置由前至后的排序中，所述目标解调导频图案指示的所述OFDM符号集合中至少存在一个OFDM符号的RE数目小于所述目标解调导频图案指示的所述OFDM符号集合中的第1组OFDM符号的RE数目，所述目标解调导频图案指示的OFDM符号集合中的各组OFDM符号包括至少一个OFDM符号，所述N为正整数。
  51. 根据权利要求50所述的基站，其特征在于，
    所述目标解调导频图案指示的OFDM符号集合中至少存在一组OFDM符号的RE集合与所述目标解调导频图案指示的OFDM符号集合中的第1组OFDM符号的RE集合的交集为空集；
    或，
    所述目标解调导频图案指示的OFDM符号集合中至少存在一组OFDM符号的RE集合为所述目标解调导频图案指示的OFDM符号集合中的第1组OFDM符号的RE集合的真子集。
  52. 根据权利要求49至51中任一项所述的基站，其特征在于，当所述RI等于1或者2时，所述解调导频图案集合中的解调导频图案的正交码图案包括各组OFDM符号上采用长度为2的正交码进行频域码分复用，每组OFDM符号包括一个OFDM符号；
    和，
    各组OFDM符号上采用长度为4的正交码进行频域码分复用，每组OFDM符号包括一个OFDM符号；
    和，
    各组OFDM符号上采用长度为8的正交码进行频域和时域的码分复用，其中所述频域码分复用长度为4，所述时域码分复用长度为2，每组OFDM符号包括时域上连续的2个OFDM符号。
  53. 根据权利要求49至51中任一项所述的基站，其特征在于，当所述RI等于3或者4时，所述解调导频图案集合中的解调导频图案的正交码图案包括各OFDM符号上采用长度为4的正交码进行频域码分复用，每组OFDM符号包括一个OFDM符号；
    和，
    各组OFDM符号上采用长度为8的正交码进行频域和时域的码分复用，其中所述频域码分复用长度为4，所述时域码分复用长度为2每组OFDM符号包括时域上连续的2个OFDM符号。
  54. 根据权利要求49至51中任一项所述的基站，其特征在于，当所述RI属于集合{5，6，7，8}时，所述解调导频图案集合中的解调导频图案的正交码图案包括各组OFDM符号上采用长度为8的正交码进行频域和时域的码分复用，其中所述频域码分复用长度为4，所述时域码分复用长度为2，每组OFDM符号包括时域上连续的2个OFDM符号；
    和，
    各组OFDM符号上的第一个OFDM符号采用长度4的正交码进行频域码分复用，在第二OFDM符号上采用长度4的正交码进行频域码分复用，每组OFDM符号包括时域上连续的2个OFDM符号。
  55. 一种接收设备，其特征在于，包括：
    处理模块，用于获取传输时间单元内的目标解调导频图案，所述目标解调导频图由基站根据导频配置信息从秩指示RI对应的解调导频图案集合中确定，所述解调导频图案集合中包括至少两种解调导频图案，所述解调导频图案集合中的各解调导频图案各指示一种正交频分复用OFDM符号集合中各OFDM符号的时频资源，且该解调导频图案集合中的各解调导频图案指示的各OFDM符号的时频资源单元RE的数目不同以及所述解调导频图案集合中的各解调导频图案采用的正交码图案不同，所述正交码图案包括频域一维扩频图案和时频两维扩频图案，所述至少两种解调导频图案是同一种子帧类型下的解调导频图案；
    接收模块，用于按照所述目标解调导频图案接收导频信号，所述导频信号由所述基站按照所述目标解调导频图案映射在时频资源上后发送。
  56. 根据权利要求55所述的接收设备，其特征在于，所述目标解调导频图案指示的OFDM符号集合中包括N组OFDM符号，所述N组OFDM符号在按照时域位置由前至后的排序中，所述目标解调导频图案指示的所述OFDM符号集合中至少存在一个OFDM符号的RE数目小于所述目标解调导频图案指示的所述OFDM符号集合中的第1组OFDM符号的RE数目，所述目标解调导频图案指示的OFDM符号集合中的各组OFDM符号包括至少一个OFDM符号，所述N为正整数。
  57. 根据权利要求56所述的接收设备，其特征在于，所述目标解调导频图案指示的OFDM符号集合中至少存在一组OFDM符号的RE集合与所述目标解调导频图案指示的OFDM符号集合中的第1组OFDM符号的RE集合的交集为空集；
    或，
    所述目标解调导频图案指示的OFDM符号集合中至少存在一组OFDM符号的RE集合为所述目标解调导频图案指示的OFDM符号集合中的第1组OFDM符号的RE集合的真子集。
  58. 根据权利要求55至57中任一项所述的接收设备，其特征在于，当所述RI等于1或者2时，所述解调导频图案集合中的解调导频图案的正交码图案包括各组OFDM符号上采用长度为2的正交码进行频域码分复用，每组OFDM符号包括一个OFDM符号；
    和，
    各组OFDM符号上采用长度为4的正交码进行频域码分复用，每组OFDM符号包括一个OFDM符号；
    和，
    各组OFDM符号上采用长度为8的正交码进行频域和时域的码分复用，其中所述频域码分复用长度为4，所述时域码分复用长度为2，每组OFDM符号包括时域上连续的2个OFDM符号。
  59. 根据权利要求55至57中任一项所述的接收设备，其特征在于，当所述RI等于3或者4时，所述解调导频图案集合中的解调导频图案的正交码图案包括各OFDM符号上采用长度为4的正交码进行频域码分复用，每组OFDM符号包括一个OFDM符号；
    和，
    各组OFDM符号上采用长度为8的正交码进行频域和时域的码分复用，其中所述频域码分复用长度为4，所述时域码分复用长度为2每组OFDM符号包括时域上连续的2个OFDM符号。
  60. 根据权利要求55至57中任一项所述的接收设备，其特征在于，当所述RI属于集合{5，6，7，8}时，所述解调导频图案集合中的解调导频图案的正交码图案包括各组OFDM符号上采用长度为8的正交码进行频域和时域的码分复用，其中所述频域码分复用长度为4，所述时域码分复用长度为2，每组OFDM符号包括时域上连续的2个OFDM符号；
    和，
    各组OFDM符号上的第一个OFDM符号采用长度4的正交码进行频域码分复用，在第二OFDM符号上采用长度4的正交码进行频域码分复用，每组OFDM符号包括时域上连续的2个OFDM符号。
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