WO2022067826A1 - Procédé et dispositif de communication - Google Patents

Procédé et dispositif de communication Download PDF

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WO2022067826A1
WO2022067826A1 PCT/CN2020/119759 CN2020119759W WO2022067826A1 WO 2022067826 A1 WO2022067826 A1 WO 2022067826A1 CN 2020119759 W CN2020119759 W CN 2020119759W WO 2022067826 A1 WO2022067826 A1 WO 2022067826A1
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sequence
reference signal
sequences
group
sequence group
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PCT/CN2020/119759
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English (en)
Chinese (zh)
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曲秉玉
李博
龚名新
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华为技术有限公司
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Priority to CN202080105653.XA priority Critical patent/CN116250200A/zh
Priority to PCT/CN2020/119759 priority patent/WO2022067826A1/fr
Publication of WO2022067826A1 publication Critical patent/WO2022067826A1/fr

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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

Definitions

  • the embodiments of the present application relate to the field of communication technologies, and in particular, to a communication method and apparatus.
  • DMRS demodulation reference signals
  • NR New RAT
  • CP-OFDM cyclic prefixed orthogonal frequency division multiplexing
  • configuration type 1 within a resource block, the system supports a maximum of 8 orthogonal DMRS multiplexing
  • configuration type 2 within a resource block, the system supports a maximum of 12 multiplexing Orthogonal DMRS multiplexing.
  • the uplink also supports orthogonal frequency division multiplexing (discrete fourier transform-spread-orthogonal frequency division multiplexing, DFT-S-OFDM) waveforms using discrete Fourier transform expansion.
  • DFT-S-OFDM orthogonal frequency division multiplexing
  • DMRS configuration type 1 is used, and the system supports a maximum of 8 positive Cross-DMRS multiplexing.
  • Embodiments of the present application provide a communication method and apparatus for reducing interference between reference signals of different layers.
  • the embodiments of the present application provide the following technical solutions:
  • a first aspect provides a communication method, the method includes: receiving or sending a first signaling; wherein, a preset field included in the first signaling indicates a first reference signal combination; the first reference signal The combination includes at least one reference signal; wherein, different values of the preset field included in the first signaling correspond to each reference signal combination respectively; all the reference signals included in the reference signal combination are composed of A reference signal set, the reference signal set includes at least two reference signal groups; the reference signal sequence of each reference signal in the at least two reference signal groups Satisfy:
  • r(m) is a pseudo-random sequence
  • m 0, 1, 2..
  • A is a non-zero complex constant
  • t m mod N
  • the length of the orthogonal code sequence W( ⁇ ) is N
  • the value range of the independent variable is 0,1,...,N-1,c( ) is a mask sequence
  • the value range of the argument is a non-negative integer
  • any two reference signal groups in the at least two reference signal groups meet the following conditions: the reference signal sequences of all reference signals in the first reference signal group
  • the corresponding orthogonal code sequence W( ⁇ ) constitutes the first sequence group, and the reference signal sequences of all reference signals in the second reference signal group
  • the corresponding orthogonal code sequences W( ⁇ ) form a second sequence group; the sequences in the first sequence group are orthogonal; the sequences in the second sequence group are orthogonal; the first sequence group includes at least two sequence subgroups; the second sequence group includes at least two sequence subgroups; a sequence in one sequence subgroup in the first sequence group and a sequence in a partial sequence subgroup in the second sequence group
  • the sequences are orthogonal; any sequence in the first sequence group is different from any sequence in the second sequence group;
  • sequence c( ⁇ ) corresponding to the first sequence group is different from the sequence c( ⁇ ) corresponding to the second sequence group;
  • sequence r(m) corresponding to the first sequence group is different from the sequence c( ⁇ ) corresponding to the second sequence group The sequence r(m) corresponding to the group is the same;
  • the at least one reference signal is generated and transmitted.
  • any two reference signal groups in the at least two reference signal groups included in the first reference signal set satisfy a specific condition (that is, all the reference signal groups in the first reference signal group reference signal sequence
  • the corresponding orthogonal code sequence W( ⁇ ) constitutes the first sequence group, and the reference signal sequences of all reference signals in the second reference signal group
  • the corresponding orthogonal code sequences W( ⁇ ) form a second sequence group; the sequences in the first sequence group are orthogonal; the sequences in the second sequence group are orthogonal; the first sequence group includes at least two sequence subgroups;
  • the second sequence group includes at least two sequence subgroups; the sequence in one sequence subgroup in the first sequence group is orthogonal to the sequence in the partial sequence subgroup in the second sequence group; the sequences in the first sequence group and The sequences in the second sequence group are different), so compared with the prior art, the above method of the present application can provide more orthogonal code sequences, and each orthogonal code sequence is at least in line with other orthogonal
  • each orthogonal code sequence is orthogonal to the partial orthogonal code sequences in other sequence groups.
  • the reference signal obtained by using the above-mentioned orthogonal code sequence of the present application can be kept orthogonal to more reference signals, thereby reducing the interference between reference signals of different layers.
  • the orthogonal code sequence corresponding to the DMRS in UE group 3 can be used in the same sequence subgroup in the same sequence group.
  • the orthogonal code sequence (for example, the orthogonal code sequence in the first sequence subgroup in the first sequence group), and the orthogonal code sequence corresponding to the DMRS in UE group 4 uses the second sequence in the first sequence group
  • the orthogonal code sequence in the subgroup, and the orthogonal code sequence corresponding to the DMRS in the UE group 5 uses the orthogonal code sequence in the third sequence subgroup in the second sequence group (wherein, the orthogonal code sequence in the third sequence subgroup is sequences are orthogonal to sequences in the second subset of sequences). In this way, the interference of reference signals between different layers can be reduced while increasing the number of transmission layers.
  • the orthogonal code sequences W( ⁇ ) corresponding to the two or more reference signals belong to the same sequence subgroup.
  • the network device indicates the reference signal for the terminal device
  • two or more reference signals corresponding to the orthogonal code sequences in the same sequence subgroup are allocated to the same terminal device, thereby ensuring the same terminal device There is no interference between the two or more transmitted reference signals.
  • the reference signal combinations form a reference signal combination set, and the reference signal combination set satisfies: the reference signal combination set is a proper subset of all possible reference signal combinations in the reference signal set, And the reference signal combination set includes at least various combinations of reference signals corresponding to sequences in the same sequence subgroup.
  • the reference signal sequence corresponding to the sequence of the first sequence group corresponds to the sequence of the second sequence group
  • the reference signal sequences of are mapped on the same subcarriers in the same resource block.
  • the reference signal sequence corresponding to the sequence of the first sequence group and the sequence corresponding to the sequence of the second sequence group may be The reference signal sequence multiplexes the same subcarriers. It can also be understood that, in the mapping process, the reference signals corresponding to the sequences of the first sequence group and the reference signals corresponding to the sequences of the second sequence group are used as reference signals in the same CDM group for mapping.
  • the reference signal sequence corresponding to the first sequence group and the first item of the reference signal sequence corresponding to the second sequence group are both mapped to the same RE, the second item is also mapped to the same RE, and so on .
  • sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,1,1,1 ⁇ , ⁇ 1,-1,1,-1 ⁇ , ⁇ 1, 1,-1,-1 ⁇ , ⁇ 1,-1,-1,1 ⁇ ; or, the sequence of the first sequence group/second sequence group includes the following sequence: ⁇ 1,j,1,j ⁇ , ⁇ 1,-j,1,-j ⁇ , ⁇ 1,j,-1,-j ⁇ , ⁇ 1,-j,-1,j ⁇ ; where j is an imaginary unit.
  • sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,1,1,1 ⁇ , ⁇ 1,-1,1,-1 ⁇ , ⁇ 1 ,1,-1,-1 ⁇ , ⁇ 1,-1,-1,1 ⁇ ; sequence subgroups include: first sequence subgroup: ⁇ 1,1,1,1 ⁇ , ⁇ 1,-1,1 ,-1 ⁇ ; the second sequence subgroup: ⁇ 1,1,-1,-1 ⁇ , ⁇ 1,-1,-1,1 ⁇ ; or, the sequence of the first sequence group/second sequence group When including the following sequences: ⁇ 1,j,1,j ⁇ , ⁇ 1,-j,1,-j ⁇ , ⁇ 1,j,-1,-j ⁇ , ⁇ 1,-j,-1,j ⁇ ; The sequence subgroup includes: the first sequence subgroup: ⁇ 1,j,1,j ⁇ , ⁇ 1,-j,1,-j ⁇ ; the second sequence subgroup: ⁇ 1,j,-1,- j ⁇ , ⁇ 1,-j,-1,j ⁇ .
  • the number of orthogonal code sequences used by the reference signal can be increased, and the number of reference signals can be increased, and the reference signal obtained by using the orthogonal code sequence in the above implementation manner can be kept orthogonal to more reference signals , thereby reducing the interference between reference signals of different layers.
  • sequences of the first sequence group/second sequence group include the following sequences:
  • sequences of the first sequence group/second sequence group include the following sequences:
  • sequences of the first sequence group/second sequence group include the following sequences:
  • sequences of the first sequence group/second sequence group include the following sequences:
  • the number of orthogonal code sequences used by the reference signal can be increased, and the number of reference signals can be increased, and the reference signal obtained by using the orthogonal code sequence in the above implementation manner can be kept orthogonal to more reference signals , thereby reducing the interference between reference signals of different layers.
  • sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,-j,-j,-1,1,-j,-j,-1 ⁇ , ⁇ 1,j,-j,1,1,j,-j,1 ⁇ , ⁇ 1,-j,j,1,1,-j,j,1 ⁇ , ⁇ 1,j,j,-1,1 ,j,j,-1 ⁇ , ⁇ 1,-j,-j,-1,-1,j,j,1 ⁇ , ⁇ 1,j,-j,1,-1,-j,j,- 1 ⁇ , ⁇ 1,-j,j,1,-1,j,-j,-1 ⁇ , ⁇ 1,j,j,-1,-1,-j,-j,1 ⁇ ; or, all The sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,-1,-j,-j,1,-1,-j,-j ⁇ , ⁇ 1,1,-j,j ,1,1,-j,j ⁇ , ⁇ 1,-1,j,j,1,-1,j,j ⁇ ,
  • sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,1,1,1,1,1,1 ⁇ , ⁇ 1,-1,1 ,-1,1,-1,1,-1 ⁇ , ⁇ 1,1,-1,-1,1,1,-1,-1 ⁇ , ⁇ 1,-1,-1,1,1, -1,-1,1 ⁇ , ⁇ 1,1,1,1,-1,-1,-1,-1 ⁇ , ⁇ 1,-1,1,-1,-1,1,-1, 1 ⁇ , ⁇ 1,-1,1,-1,-1,1,-1, 1 ⁇ , ⁇ 1,1,-1,-1,-1,-1,1,1 ⁇ , ⁇ 1,-1,-1,1,1,-1 ⁇ ; or, all The sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,1,1,-1,1,1,-1 ⁇ , ⁇ 1,-1,1,1,1,- 1,1,1 ⁇ , ⁇ 1,1,-1,1,1,1,-1,1 ⁇ , ⁇ 1,-1,-1,-1,-1,-1 ⁇ , ⁇ 1,1,1,-1,-1,-1,1 ⁇ , ⁇ 1,-1,1,1,-1,1,-1,
  • sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,1,1,1,1,1,1 ⁇ , ⁇ 1,-1, 1,-1,1,-1,1,-1 ⁇ , ⁇ 1,1,-1,-1,1,1,-1,-1 ⁇ , ⁇ 1,-1,-1,1,1 ,-1,-1,1 ⁇ , ⁇ 1,1,1,1,-1,-1,-1,-1 ⁇ , ⁇ 1,-1,1,-1,-1,-1 ⁇ , ⁇ 1,-1,1,-1,-1,1 ⁇ , ⁇ 1,1,-1,-1,-1,1,-1,1 ⁇ , ⁇ 1,1,-1,-1,-1,1,1,-1 ⁇ ; sequencer Groups include: First sequence subgroups: ⁇ 1,1,1,1,1,1,1 ⁇ , ⁇ 1,-1,1,-1,1,-1,1,-1 ⁇ , ⁇ 1,1,-1,-1,1,1,-1,-1 ⁇ , ⁇ 1,-1,-1,1,1,-1,-1,1 ⁇ ; second sequence subgroup: ⁇ 1,1,1,1,-1,-1,-1,-1 ⁇ , ⁇ 1,-1,1,-1,-1,1,-1,1 ⁇ ,
  • each reference signal in each reference signal combination is a demodulation reference signal DMRS; the first signaling is downlink control information DCI.
  • a communication method comprising: receiving or sending first signaling; wherein, a preset field included in the first signaling indicates a first reference signal combination; in the first reference signal combination Including at least one reference signal; wherein, different values of the preset field included in the first signaling correspond to each reference signal combination respectively; all reference signals included in each reference signal combination constitute a reference signal set, the reference signal set includes at least two reference signal groups; the reference signal sequence of each reference signal in the at least two reference signal groups Satisfy:
  • r(m) is a pseudo-random sequence
  • m 0,1,2...
  • A is a non-zero complex constant
  • the length of the orthogonal code sequence W( ⁇ ) is N
  • c( ) is the mask sequence
  • any two reference signal groups in the at least two reference signal groups meet the following conditions: the reference signal sequences of all reference signals in the first reference signal group
  • the corresponding orthogonal code sequence W( ⁇ ) constitutes the first sequence group
  • the corresponding orthogonal code sequences c( ⁇ ) form a second sequence group; the sequences in the first sequence group are orthogonal; the sequences in the second sequence group are orthogonal; the first sequence group includes at least two sequence subgroups; the second sequence group includes at least two sequence subgroups; a sequence in one sequence subgroup in the first sequence group and a sequence in a partial sequence subgroup in the second sequence group
  • the sequences are orthogonal; the sequences in the first sequence group and the sequences in the second sequence group are different;
  • sequence c( ⁇ ) corresponding to the first sequence group is different from the sequence c( ⁇ ) corresponding to the second sequence group;
  • sequence r(m) corresponding to the first sequence group is different from the sequence c( ⁇ ) corresponding to the second sequence group The sequence r(m) corresponding to the group is the same;
  • the at least one reference signal is received.
  • the orthogonal code sequences W( ⁇ ) corresponding to the two or more reference signals belong to the same sequence subgroup.
  • the reference signal combinations form a reference signal combination set, and the reference signal combination set satisfies:
  • the reference signal combination set is a proper subset of all possible reference signal combinations in the reference signal set, and the reference signal combination set includes at least all combinations of reference signals corresponding to sequences in the same sequence subset.
  • the reference signal sequence corresponding to the sequence of the first sequence group corresponds to the sequence of the second sequence group
  • the reference signal sequences of are mapped on the same subcarriers in the same resource block.
  • sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,1,1,1 ⁇ , ⁇ 1,-1,1,-1 ⁇ , ⁇ 1, 1,-1,-1 ⁇ , ⁇ 1,-1,-1,1 ⁇ ; or, the sequence of the first sequence group/second sequence group includes the following sequence: ⁇ 1,j,1,j ⁇ , ⁇ 1,-j,1,-j ⁇ , ⁇ 1,j,-1,-j ⁇ , ⁇ 1,-j,-1,j ⁇ ; where j is an imaginary unit.
  • sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,1,1,1 ⁇ , ⁇ 1,-1,1,-1 ⁇ , ⁇ 1 ,1,-1,-1 ⁇ , ⁇ 1,-1,-1,1 ⁇ ; sequence subgroups include: first sequence subgroup: ⁇ 1,1,1,1 ⁇ , ⁇ 1,-1,1 ,-1 ⁇ ; the second sequence subgroup: ⁇ 1,1,-1,-1 ⁇ , ⁇ 1,-1,-1,1 ⁇ ; or, the sequence of the first sequence group/second sequence group When including the following sequences: ⁇ 1,j,1,j ⁇ , ⁇ 1,-j,1,-j ⁇ , ⁇ 1,j,-1,-j ⁇ , ⁇ 1,-j,-1,j ⁇ ; The sequence subgroup includes: the first sequence subgroup: ⁇ 1,j,1,j ⁇ , ⁇ 1,-j,1,-j ⁇ ; the second sequence subgroup: ⁇ 1,j,-1,- j ⁇ , ⁇ 1,-j,-1,j ⁇ .
  • sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,-j,-j,-1,1,-j,-j,-1 ⁇ , ⁇ 1,j,-j,1,1,j,-j,1 ⁇ , ⁇ 1,-j,j,1,1,-j,j,1 ⁇ , ⁇ 1,j,j,-1,1 ,j,j,-1 ⁇ , ⁇ 1,-j,-j,-1,-1,j,j,1 ⁇ , ⁇ 1,j,-j,1,-1,-j,j,- 1 ⁇ , ⁇ 1,-j,j,1,-1,j,-j,-1 ⁇ , ⁇ 1,j,j,-1,-1,-j,-j,1 ⁇ ; or, all The sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,-1,-j,-j,1,-1,-j,-j ⁇ , ⁇ 1,1,-j,j ,1,1,-j,j ⁇ , ⁇ 1,-1,j,j,1,-1,j,j ⁇ ,
  • sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,1,1,1,1,1,1 ⁇ , ⁇ 1,-1,1 ,-1,1,-1,1,-1 ⁇ , ⁇ 1,1,-1,-1,1,1,-1,-1 ⁇ , ⁇ 1,-1,-1,1,1, -1,-1,1 ⁇ , ⁇ 1,1,1,1,-1,-1,-1,-1 ⁇ , ⁇ 1,-1,1,-1,-1,1,-1, 1 ⁇ , ⁇ 1,-1,1,-1,-1,1,-1, 1 ⁇ , ⁇ 1,1,-1,-1,-1,-1,1,1 ⁇ , ⁇ 1,-1,-1,1,1,-1 ⁇ ; or, all The sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,1,1,-1,1,1,-1 ⁇ , ⁇ 1,-1,1,1,1,- 1,1,1 ⁇ , ⁇ 1,1,-1,1,1,1,-1,1 ⁇ , ⁇ 1,-1,-1,-1,-1,-1 ⁇ , ⁇ 1,1,1,-1,-1,-1,1 ⁇ , ⁇ 1,-1,1,1,-1,1,-1,
  • sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,1,1,1,1,1,1 ⁇ , ⁇ 1,-1, 1,-1,1,-1,1,-1 ⁇ , ⁇ 1,1,-1,-1,1,1,-1,-1 ⁇ , ⁇ 1,-1,-1,1,1 ,-1,-1,1 ⁇ , ⁇ 1,1,1,1,-1,-1,-1,-1 ⁇ , ⁇ 1,-1,1,-1,-1,-1 ⁇ , ⁇ 1,-1,1,-1,-1,1 ⁇ , ⁇ 1,1,-1,-1,-1,1,-1,1 ⁇ , ⁇ 1,1,-1,-1,-1,1,1,-1 ⁇ ; sequencer Groups include: First sequence subgroups: ⁇ 1,1,1,1,1,1,1 ⁇ , ⁇ 1,-1,1,-1,1,-1,1,-1 ⁇ , ⁇ 1,1,-1,-1,1,1,-1,-1 ⁇ , ⁇ 1,-1,-1,1,1,-1,-1,1 ⁇ ; second sequence subgroup: ⁇ 1,1,1,1,-1,-1,-1,-1 ⁇ , ⁇ 1,-1,1,-1,-1,1,-1,1 ⁇ ,
  • each reference signal in each reference signal combination is a demodulation reference signal DMRS; the first signaling is downlink control information DCI.
  • a communication device comprising:
  • a communication unit configured to receive or send first signaling; wherein, a preset field included in the first signaling indicates a first reference signal combination; the first reference signal combination includes at least one reference signal; wherein , the different values of the preset fields included in the first signaling correspond to respective reference signal combinations; all reference signals included in the reference signal combinations form a reference signal set, and the reference signal set At least two reference signal groups are included; the reference signal sequence of each reference signal in the at least two reference signal groups Satisfy:
  • r(m) is a pseudo-random sequence
  • m 0,1,2...
  • A is a non-zero complex constant
  • the length of the orthogonal code sequence W( ⁇ ) is N
  • c( ) is a mask sequence
  • the value range of the independent variable is a non-negative integer
  • any two reference signal groups in the at least two reference signal groups meet the following conditions: the reference signal sequences of all reference signals in the first reference signal group
  • the corresponding orthogonal code sequence W( ⁇ ) constitutes the first sequence group, and the reference signal sequences of all reference signals in the second reference signal group
  • the corresponding orthogonal code sequences W( ⁇ ) form a second sequence group; the sequences in the first sequence group are orthogonal; the sequences in the second sequence group are orthogonal; the first sequence group includes at least two sequence subgroups; the second sequence group includes at least two sequence subgroups; a sequence in one sequence subgroup in the first sequence group and a sequence in a partial sequence subgroup in the second sequence group
  • the sequences are orthogonal; the sequences in the first sequence group and the sequences in the second sequence group are different;
  • sequence c( ⁇ ) corresponding to the first sequence group is different from the sequence c( ⁇ ) corresponding to the second sequence group;
  • sequence r(m) corresponding to the first sequence group is different from the sequence c( ⁇ ) corresponding to the second sequence group The sequence r(m) corresponding to the group is the same;
  • a reference signal sending unit configured to generate and send the at least one reference signal.
  • the orthogonal code sequences W( ⁇ ) corresponding to the two or more reference signals belong to the same sequence subgroup.
  • the reference signal combinations form a reference signal combination set, and the reference signal combination set satisfies:
  • the reference signal combination set is a proper subset of all possible reference signal combinations in the reference signal set, and the reference signal combination set includes at least all combinations of reference signals corresponding to sequences in the same sequence subset.
  • the reference signal sequence corresponding to the sequence of the first sequence group and the sequence corresponding to the second sequence group Reference signal sequences are mapped on the same subcarriers in the same resource block.
  • sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,1,1,1 ⁇ , ⁇ 1,-1,1,-1 ⁇ , ⁇ 1, 1,-1,-1 ⁇ , ⁇ 1,-1,-1,1 ⁇ ; or, the sequence of the first sequence group/second sequence group includes the following sequence: ⁇ 1,j,1,j ⁇ , ⁇ 1,-j,1,-j ⁇ , ⁇ 1,j,-1,-j ⁇ , ⁇ 1,-j,-1,j ⁇ ; where j is an imaginary unit.
  • sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,1,1,1 ⁇ , ⁇ 1,-1,1,-1 ⁇ , ⁇ 1 ,1,-1,-1 ⁇ , ⁇ 1,-1,-1,1 ⁇ ; sequence subgroups include: first sequence subgroup: ⁇ 1,1,1,1 ⁇ , ⁇ 1,-1,1 ,-1 ⁇ ; the second sequence subgroup: ⁇ 1,1,-1,-1 ⁇ , ⁇ 1,-1,-1,1 ⁇ ; or, the sequence of the first sequence group/second sequence group When including the following sequences: ⁇ 1,j,1,j ⁇ , ⁇ 1,-j,1,-j ⁇ , ⁇ 1,j,-1,-j ⁇ , ⁇ 1,-j,-1,j ⁇ ; The sequence subgroup includes: the first sequence subgroup: ⁇ 1,j,1,j ⁇ , ⁇ 1,-j,1,-j ⁇ ; the second sequence subgroup: ⁇ 1,j,-1,- j ⁇ , ⁇ 1,-j,-1,j ⁇ .
  • sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,-j,-j,-1,1,-j,-j,-1 ⁇ , ⁇ 1,j,-j,1,1,j,-j,1 ⁇ , ⁇ 1,-j,j,1,1,-j,j,1 ⁇ , ⁇ 1,j,j,-1,1 ,j,j,-1 ⁇ , ⁇ 1,-j,-j,-1,-1,j,j,1 ⁇ , ⁇ 1,j,-j,1,-1,-j,j,- 1 ⁇ , ⁇ 1,-j,j,1,-1,j,-j,-1 ⁇ , ⁇ 1,j,j,-1,-1,-j,-j,1 ⁇ ; or, all The sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,-1,-j,-j,1,-1,-j,-j ⁇ , ⁇ 1,1,-j,j ,1,1,-j,j ⁇ , ⁇ 1,-1,j,j,1,-1,j,j ⁇ ,
  • sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,1,1,1,1,1,1 ⁇ , ⁇ 1,-1,1 ,-1,1,-1,1,-1 ⁇ , ⁇ 1,1,-1,-1,1,1,-1,-1 ⁇ , ⁇ 1,-1,-1,1,1, -1,-1,1 ⁇ , ⁇ 1,1,1,1,-1,-1,-1,-1 ⁇ , ⁇ 1,-1,1,-1,-1,1,-1, 1 ⁇ , ⁇ 1,-1,1,-1,-1,1,-1, 1 ⁇ , ⁇ 1,1,-1,-1,-1,-1,1,1 ⁇ , ⁇ 1,-1,-1,1,1,-1 ⁇ ; or, all The sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,1,1,-1,1,1,-1 ⁇ , ⁇ 1,-1,1,1,1,- 1,1,1 ⁇ , ⁇ 1,1,-1,1,1,1,-1,1 ⁇ , ⁇ 1,-1,-1,-1,-1,-1 ⁇ , ⁇ 1,1,1,-1,-1,-1,1 ⁇ , ⁇ 1,-1,1,1,-1,1,-1,
  • sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,1,1,1,1,1,1 ⁇ , ⁇ 1,-1, 1,-1,1,-1,1,-1 ⁇ , ⁇ 1,1,-1,-1,1,1,-1,-1 ⁇ , ⁇ 1,-1,-1,1,1 ,-1,-1,1 ⁇ , ⁇ 1,1,1,1,-1,-1,-1,-1 ⁇ , ⁇ 1,-1,1,-1,-1,-1 ⁇ , ⁇ 1,-1,1,-1,-1,1 ⁇ , ⁇ 1,1,-1,-1,-1,1,-1,1 ⁇ , ⁇ 1,1,-1,-1,-1,1,1,-1 ⁇ ; sequencer Groups include: First sequence subgroups: ⁇ 1,1,1,1,1,1,1 ⁇ , ⁇ 1,-1,1,-1,1,-1,1,-1 ⁇ , ⁇ 1,1,-1,-1,1,1,-1,-1 ⁇ , ⁇ 1,-1,-1,1,1,-1,-1,1 ⁇ ; second sequence subgroup: ⁇ 1,1,1,1,-1,-1,-1,-1 ⁇ , ⁇ 1,-1,1,-1,-1,1,-1,1 ⁇ ,
  • each reference signal in each reference signal combination is a demodulation reference signal DMRS; the first signaling is downlink control information DCI.
  • a communication device comprising:
  • a communication unit configured to receive or send a first signaling; wherein, a preset field included in the first signaling indicates a first reference signal combination; the first reference signal combination includes at least one reference signal; wherein, the Different values of the preset fields included in the first signaling respectively correspond to each reference signal combination; all reference signals included in each reference signal combination form a reference signal set, and the reference signal set includes at least one reference signal set.
  • r(m) is a pseudo-random sequence
  • m 0,1,2...
  • A is a non-zero complex constant
  • the length of the orthogonal code sequence W( ⁇ ) is N
  • c( ) is a mask sequence
  • the value range of the independent variable is a non-negative integer
  • any two reference signal groups in the at least two reference signal groups meet the following conditions: the reference signal sequences of all reference signals in the first reference signal group
  • the corresponding orthogonal code sequence v constitutes the first sequence group
  • the corresponding orthogonal code sequences W( ⁇ ) form a second sequence group; the sequences in the first sequence group are orthogonal; the sequences in the second sequence group are orthogonal; the first sequence group includes at least two sequence subgroups; the second sequence group includes at least two sequence subgroups; a sequence in one sequence subgroup in the first sequence group and a sequence in a partial sequence subgroup in the second sequence group
  • the sequences are orthogonal; the sequences in the first sequence group and the sequences in the second sequence group are different;
  • sequence c( ⁇ ) corresponding to the first sequence group is different from the sequence c( ⁇ ) corresponding to the second sequence group;
  • sequence r(m) corresponding to the first sequence group is different from the sequence c( ⁇ ) corresponding to the second sequence group The sequence r(m) corresponding to the group is the same;
  • a reference signal receiving unit configured to receive the at least one reference signal.
  • the orthogonal code sequences W( ⁇ ) corresponding to the two or more reference signals belong to the same sequence subgroup.
  • the reference signal combinations form a reference signal combination set, and the reference signal combination set satisfies:
  • the reference signal combination set is a proper subset of all possible reference signal combinations in the reference signal set, and the reference signal combination set includes at least all combinations of reference signals corresponding to sequences in the same sequence subset.
  • the reference signal sequence corresponding to the sequence of the first sequence group and the sequence corresponding to the second sequence group Reference signal sequences are mapped on the same subcarriers in the same resource block.
  • sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,1,1,1 ⁇ , ⁇ 1,-1,1,-1 ⁇ , ⁇ 1, 1,-1,-1 ⁇ , ⁇ 1,-1,-1,1 ⁇ ; or, the sequence of the first sequence group/second sequence group includes the following sequence: ⁇ 1,j,1,j ⁇ , ⁇ 1,-j,1,-j ⁇ , ⁇ 1,j,-1,-j ⁇ , ⁇ 1,-j,-1,j ⁇ ; where j is an imaginary unit.
  • sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,1,1,1 ⁇ , ⁇ 1,-1,1,-1 ⁇ , ⁇ 1 ,1,-1,-1 ⁇ , ⁇ 1,-1,-1,1 ⁇ ; sequence subgroups include: first sequence subgroup: ⁇ 1,1,1,1 ⁇ , ⁇ 1,-1,1 ,-1 ⁇ ; the second sequence subgroup: ⁇ 1,1,-1,-1 ⁇ , ⁇ 1,-1,-1,1 ⁇ ; or, the sequence of the first sequence group/second sequence group When including the following sequences: ⁇ 1,j,1,j ⁇ , ⁇ 1,-j,1,-j ⁇ , ⁇ 1,j,-1,-j ⁇ , ⁇ 1,-j,-1,j ⁇ ; The sequence subgroup includes: the first sequence subgroup: ⁇ 1,j,1,j ⁇ , ⁇ 1,-j,1,-j ⁇ ; the second sequence subgroup: ⁇ 1,j,-1,- j ⁇ , ⁇ 1,-j,-1,j ⁇ .
  • sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,-j,-j,-1,1,-j,-j,-1 ⁇ , ⁇ 1,j,-j,1,1,j,-j,1 ⁇ , ⁇ 1,-j,j,1,1,-j,j,1 ⁇ , ⁇ 1,j,j,-1,1 ,j,j,-1 ⁇ , ⁇ 1,-j,-j,-1,-1,j,j,1 ⁇ , ⁇ 1,j,-j,1,-1,-j,j,- 1 ⁇ , ⁇ 1,-j,j,1,-1,j,-j,-1 ⁇ , ⁇ 1,j,j,-1,-1,-j,-j,1 ⁇ ; or, all The sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,-1,-j,-j,1,-1,-j,-j ⁇ , ⁇ 1,1,-j,j ,1,1,-j,j ⁇ , ⁇ 1,-1,j,j,1,-1,j,j ⁇ ,
  • sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,1,1,1,1,1,1 ⁇ , ⁇ 1,-1,1 ,-1,1,-1,1,-1 ⁇ , ⁇ 1,1,-1,-1,1,1,-1,-1 ⁇ , ⁇ 1,-1,-1,1,1, -1,-1,1 ⁇ , ⁇ 1,1,1,1,-1,-1,-1,-1 ⁇ , ⁇ 1,-1,1,-1,-1,1,-1, 1 ⁇ , ⁇ 1,-1,1,-1,-1,1,-1, 1 ⁇ , ⁇ 1,1,-1,-1,-1,-1,1,1 ⁇ , ⁇ 1,-1,-1,1,1,-1 ⁇ ; or, all The sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,1,1,-1,1,1,-1 ⁇ , ⁇ 1,-1,1,1,1,- 1,1,1 ⁇ , ⁇ 1,1,-1,1,1,1,-1,1 ⁇ , ⁇ 1,-1,-1,-1,-1,-1 ⁇ , ⁇ 1,1,1,-1,-1,-1,1 ⁇ , ⁇ 1,-1,1,1,-1,1,-1,
  • sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,1,1,1,1,1,1 ⁇ , ⁇ 1,-1, 1,-1,1,-1,1,-1 ⁇ , ⁇ 1,1,-1,-1,1,1,-1,-1 ⁇ , ⁇ 1,-1,-1,1,1 ,-1,-1,1 ⁇ , ⁇ 1,1,1,1,-1,-1,-1,-1 ⁇ , ⁇ 1,-1,1,-1,-1,-1 ⁇ , ⁇ 1,-1,1,-1,-1,1 ⁇ , ⁇ 1,1,-1,-1,-1,1,-1,1 ⁇ , ⁇ 1,1,-1,-1,-1,1,1,-1 ⁇ ; sequencer Groups include: First sequence subgroups: ⁇ 1,1,1,1,1,1,1 ⁇ , ⁇ 1,-1,1,-1,1,-1,1,-1 ⁇ , ⁇ 1,1,-1,-1,1,1,-1,-1 ⁇ , ⁇ 1,-1,-1,1,1,-1,-1,1 ⁇ ; second sequence subgroup: ⁇ 1,1,1,1,-1,-1,-1,-1 ⁇ , ⁇ 1,-1,1,-1,-1,1,-1,1 ⁇ ,
  • each reference signal in each reference signal combination is a demodulation reference signal DMRS; the first signaling is downlink control information DCI.
  • a communication device comprising at least one processor and an interface circuit, the at least one processor is configured to communicate with other devices through the interface circuit, so as to execute the communication method according to the above-mentioned first aspect.
  • a communication device in a sixth aspect, includes at least one processor and an interface circuit, the at least one processor is configured to communicate with other devices through the interface circuit, so as to execute the above-mentioned first aspect communication method.
  • a chip in a seventh aspect, includes a processing circuit and an interface; the processing circuit is configured to call and run a computer program stored in the storage medium from a storage medium to execute the above-mentioned first aspect the communication method, or, execute the communication method described in the second aspect above.
  • a computer-readable storage medium is provided, and instructions are stored in the computer-readable storage medium; when the instructions are executed, the communication method described in the first aspect above is executed, or the communication method described in the above-mentioned first aspect is executed.
  • the communication method described in the second aspect is executed.
  • a computer program product which is characterized by comprising instructions; when the instructions are executed on a computer, the computer is caused to execute the communication method described in the first aspect above, or the computer is caused to execute the communication method described in the above-mentioned first aspect.
  • a communication system comprising: a first communication device and a second communication device; wherein: the first communication device is configured to execute the method described in the first aspect; the second communication device, for performing the method described in the second aspect above.
  • FIG. 3 is a third schematic diagram of a pilot pattern provided by the prior art.
  • FIG. 4 is one of schematic diagrams of a network architecture provided by an embodiment of the present application.
  • FIG. 5 is the second schematic diagram of a network architecture provided by an embodiment of the present application.
  • FIG. 6 is a third schematic diagram of a network architecture provided by an embodiment of the present application.
  • FIG. 7 is one of the schematic flowcharts of a communication method provided by an embodiment of the present application.
  • FIG. 8 is a schematic diagram of a division manner of an orthogonal code sequence provided by an embodiment of the present application.
  • FIG. 9A is one of schematic diagrams of a pilot pattern provided by an embodiment of the present application.
  • FIG. 9B is the second schematic diagram of a pilot pattern provided by an embodiment of the present application.
  • FIG. 10 is a third schematic diagram of a pilot pattern provided by an embodiment of the present application.
  • FIG. 11 is a fourth schematic diagram of a pilot pattern provided by an embodiment of the present application.
  • FIG. 12 is the second schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 13 is one of schematic structural diagrams of a communication device provided by an embodiment of the present application.
  • FIG. 14 is the second schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 15 is a third schematic structural diagram of a communication apparatus according to an embodiment of the present application.
  • the network architecture and service scenarios described in the embodiments of the present application are for the purpose of illustrating the technical solutions of the embodiments of the present application more clearly, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application.
  • the evolution of the architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.
  • Resource block (resource BLOCK, RB)
  • the smallest resource granularity in the time domain may be an Orthogonal Frequency Division Multiplexing (OFDM) symbol (symbol), which may be referred to as a symbol for short; in the frequency domain, the smallest The resource granularity may be one subcarrier.
  • OFDM Orthogonal Frequency Division Multiplexing
  • One OFDM symbol and one subcarrier form a resource element (RE), as shown in Figure 1.
  • RE resource element
  • An RB is a frequency domain basic scheduling unit for data channel allocation, and one RB includes 12 subcarriers in the frequency domain.
  • DMRS Demodulation reference signal
  • DMRS is used for uplink and downlink channel estimation.
  • DMRS can be used to perform channel estimation on a physical downlink shared channel (PDSCH) or a physical uplink shared channel (PUSCH), so as to coherently demodulate uplink and downlink data.
  • PDSCH and PUSCH are used to carry data sent in downlink and uplink respectively, and DMRS is transmitted along with PDSCH or PUSCH.
  • the DMRS is located in the first few symbols of the time slot occupied by the PDSCH or PUSCH.
  • each data stream is called a Layer transmission (layer: layer), data streams of different layers use different spatial domain precoding vectors.
  • layer layer
  • data streams of different layers use different spatial domain precoding vectors.
  • SU-MIMO downlink single user-multiple input multiple output
  • MU-MIMO uplink multi-user multiple input multiple output
  • each layer of transmission may correspond to a DMRS respectively, and this DMRS is used to perform channel estimation for the transmission of this layer.
  • the precoding vector corresponding to each DMRS is the same as the precoding vector for transmission of the corresponding layer, and the receiving end can perform channel estimation according to each DMRS to obtain channel estimation values for transmission of different layers.
  • Different DMRSs correspond to different indexes, and the index here may be a DMRS port number.
  • the DMRS can be generated using a pseudo-random sequence.
  • the DMRS scrambling sequence r(n) can be obtained from the sequence c(n) through quadrature phase shift keying (QPSK) modulation, and c(n) can be defined as Gold sequence. Then r(n) can be expressed as:
  • x 1 (n+31) (x 1 (n+3)+x 1 (n))mod 2
  • x 2 (n+31) (x 2 (n+3)+x 2 (n+2)+x 2 (n+1)+x 2 (n))mod 2
  • N C 1600
  • c init is determined by information such as a DMRS scrambling code identifier (Identity document, ID), a cell ID, a DMRS subframe location and a symbol location.
  • the DMRS corresponding to each layer multiplex the same time-frequency resources and share the same scrambling code sequence r(n).
  • the orthogonal code orthogonal cover code, OCC
  • CDM code division multiplexing
  • multiplexing multiplexing
  • CDM code division multiplexing
  • some protocols may support two DMRS configuration types, ie, configuration type 1 and configuration type 2.
  • the DMRSs of different ports in the same CDM group use orthogonal codes to expand in the time-frequency domain, and ensure the orthogonality of the DMRSs of different ports, and the DMRS of different CDM groups adopt frequency division to ensure the DMRS. orthogonal to each other.
  • FIG. 2 is a schematic diagram of a pilot pattern of a DMRS using configuration type 1.
  • the resource elements (resource elements, RE) of the two patterns in (a) in Figure 2 represent the REs occupied by CDM group 0 and CDM group 1, respectively, p0, p1, p2, p3 respectively represent the DMRS port index.
  • an orthogonal code code length of 2 is used to ensure that the DMRSs of the two DMRS ports in the same CDM group are orthogonal.
  • a frequency division method is adopted between different CDM groups to ensure that the DMRSs between different CDM groups are mutually orthogonal.
  • the system supports orthogonal DMRS multiplexing of 4 DMRS ports at most.
  • the REs of the two patterns in (b) in Figure 2 represent the REs occupied by CDM group 0 and CDM group 1, respectively, and p0, p1, ..., p6, p7 respectively represent the DMRS ports index.
  • orthogonal codes code length 4 are used to ensure that the DMRS sequences of the four DMRS ports in the same CDM group are orthogonal.
  • FIG. 3 is a schematic diagram of a pilot pattern of a DMRS using configuration type 2.
  • the REs of the three patterns in Fig. 3 (a) respectively represent the REs occupied by the three CDM groups, and p0, p1, p2,...p4, p5 respectively represent the DMRS port indices .
  • an orthogonal code with a code length of 2 is used to ensure that the DMRS sequences of the two DMRS ports in the same CDM group are orthogonal.
  • type 2 is used and one DMRS is configured for one symbol, the system supports a maximum of 6 DMRS orthogonal multiplexing.
  • the REs of the three patterns in (b) of FIG. 3 respectively represent the REs occupied by the three CDM groups, and p0, p1, p2, . . . p10, p11 respectively represent the DMRS port indices.
  • an orthogonal code with a code length of 4 is used to ensure that the DMRS sequences of the four DMRS ports in the same CDM group are orthogonal. It can be seen that when adopting type 2 and configuring two DMRS symbols, the system supports a maximum of 12 DMRS orthogonal multiplexing.
  • the base station needs to indicate the allocation of DMRS ports to the UE through downlink control information (Downlink Control Information, DCI) in the physical downlink control channel (Physical Downlink Control Channel, PDCCH).
  • DCI Downlink Control Information
  • PDCCH Physical Downlink Control Channel
  • the technical solutions provided by the embodiments of the present application will be introduced below with reference to examples.
  • the technical solutions provided in the embodiments of the present application can be applied to various communication systems, for example, a communication system using an NR technology, a long term evolution (long term evolution, LTE) technology or other wireless access technologies.
  • FIG. 4 is a schematic diagram of a network architecture to which the technical solutions provided by the embodiments of the present application are applied.
  • the network may include: terminal equipment, a radio access network (RAN) or an access network (AN) (RAN and AN are collectively referred to as (R)AN), and a core network ( core network, CN).
  • RAN radio access network
  • AN access network
  • R core network
  • the terminal device may be a device with a wireless transceiver function.
  • the terminal equipment may have different names, such as user equipment (UE), access equipment, terminal unit, terminal station, mobile station, mobile station, remote station, remote terminal, mobile device, wireless communication device, terminal agent or terminal device, etc.
  • Terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle; can also be deployed on water (such as ships, etc.); can also be deployed in the air (such as aircraft, balloons and satellites, etc.).
  • Terminal devices include handheld devices, vehicle-mounted devices, wearable devices or computing devices with wireless communication functions.
  • the terminal device may be a mobile phone, a tablet computer, or a computer with a wireless transceiver function.
  • the terminal device can also be a virtual reality (VR) device, an augmented reality (AR) device, an industrial control terminal, a wireless terminal, a wireless terminal in unmanned driving, a wireless terminal in telemedicine, and a smart grid. wireless terminals, wireless terminals in smart cities, wireless terminals in smart homes, etc.
  • the apparatus for implementing the function of the terminal device may be the terminal device, or may be an apparatus capable of supporting the terminal device to implement the function, such as a chip system.
  • the chip system may be composed of chips, and may also include chips and other discrete devices.
  • the (R)AN mainly includes access network equipment.
  • An access network device may also be referred to as a base station.
  • the base station may include various forms of base station.
  • macro base station such as Wired Local Area Network, WLAN
  • GSM Global System for Mobile Communications
  • BTS Base Transceiver Station
  • CDMA Multiple Access
  • NodeB, NB Wideband Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • Evolved Node B, eNB or eNodeB or relay station or access point, or in-vehicle equipment, wearable device and the next generation node B (The Next Generation Node B, gNB) in 5G network or future evolution of public land mobile Network (Public Land Mobile Network, PLMN
  • a base station usually includes a baseband unit (BBU), a remote radio unit (RRU), an antenna, and a feeder for connecting the RRU and the antenna.
  • BBU baseband unit
  • RRU remote radio unit
  • the BBU is used for signal modulation.
  • the RRU is responsible for radio frequency processing.
  • the antenna is responsible for the conversion between the guided traveling waves on the cable and the space waves in the air.
  • the distributed base station greatly shortens the length of the feeder between the RRU and the antenna, which can reduce the signal loss and the cost of the feeder.
  • the RRU plus antenna is relatively small and can be installed anywhere, making network planning more flexible.
  • all BBUs can be centralized and placed in the central office (CO).
  • a base station may include a centralized unit (CU) and a distributed unit (DU).
  • the base station may also include an active antenna unit (AAU).
  • the CU implements some functions of the base station, and the DU implements some functions of the base station.
  • the CU is responsible for processing non-real-time protocols and services, and implementing functions of radio resource control (RRC) and packet data convergence protocol (PDCP) layers.
  • RRC radio resource control
  • PDCP packet data convergence protocol
  • the DU is responsible for processing physical layer protocols and real-time services, and implementing functions of the radio link control (RLC), media access control (MAC), and physical (PHY) layers.
  • RLC radio link control
  • MAC media access control
  • PHY physical
  • AAU implements some physical layer processing functions, radio frequency processing and related functions of active antennas.
  • the access network device may be a device including one or more of a CU node, a DU node, and an AAU node.
  • the CU can be divided into network devices in the RAN, and the CU can also be divided into network devices in the core network (core network, CN), which is not limited here.
  • the core network includes multiple core network network elements (or called network function network elements).
  • the core network includes: access and mobility management ( access and mobility management services, AMF) network element, session management function (session management function, SMF) network element, PCF network element, user plane function (user plane function, UPF) network element, application layer function (application function) network element , AUSF network element, and UDM network element.
  • the core network may also include some network elements not shown in FIG. 4, such as: security anchor function (security anchor function, SEAF) network element, authentication credential repository and processing function (authentication credential repository and processing function, ARPF), The embodiments of the present application will not be repeated here.
  • security anchor function security anchor function, SEAF
  • SEAF security anchor function
  • ARPF authentication credential repository and processing function
  • communication can be classified into different types according to the types of transmitting nodes and receiving nodes.
  • the information sent by the network device to the terminal device is called downlink (downlink, DL) communication; the information sent by the terminal device to the network device is called uplink (uplink, UL) communication.
  • the network device may specifically refer to a network element in a base station or a core network that can exchange information with the terminal device.
  • the communication system may include a network device 101 and one or more terminal devices 102 connected to the network device 101 (including terminal device 102_1, terminal device 102_2, ... terminal device 102_n, terminal device 102_n+1, terminal device 102_n+2, ... terminal equipment 102_n+m).
  • the network device 101 may specifically be an access network device, for example, the network device 101 may be a device in (R)AN in FIG. 4 , or the network device 101 may specifically be a network element in the core network that can exchange information with the terminal device .
  • One or more terminal devices 102 may be the above-mentioned terminal devices in FIG. 4 .
  • the number of transmission layers for network pairing Limited by the maximum number of orthogonal multiplexed DMRS ports supported by the system.
  • the number of transmission layers for network pairing cannot exceed 12 layers.
  • multiple DMRS ports may correspond to different scrambling code sequences r(n), so as to achieve the purpose of expanding the number of DMRS ports.
  • the DMRS ports used in UE group 1 use one scrambling sequence
  • the DMRS ports used in UE group 2 use another scrambling sequence, thereby avoiding the maximum support of the system.
  • the number of ports of the orthogonal multiplexed DMRS limits the number of transmission layers, so as to achieve the purpose of expanding the number of ports.
  • each DMRS port uses the same time-frequency resource, if the used scrambling code sequence is different, even if the orthogonal code is superimposed on it, the orthogonality cannot be guaranteed.
  • the DMRS ports in the UE group can be kept orthogonal and will not interfere with each other, but between the UE group 1 and the UE group 2, the ports are not orthogonal to each other and will cause interference, which affects the performance of channel estimation.
  • the DMRSs used in UE group 1 are orthogonal to each other
  • the DMRSs used in UE group 2 are orthogonal to each other
  • the difference between each DMRS in UE group 1 and each DMRS in UE group 2 is Interference will occur.
  • FIG. 6 is a schematic diagram of another communication system provided by an embodiment of the present application.
  • the communication system may include a network device 201, a network device 202, and one or more terminal devices 203 connected to the network device 201 (including the terminal device 203_1, terminal device 203_2, ... terminal device 203_n, terminal device 203_n in the figure). +1, ... terminal device 203_n+m), and one or more terminal devices 204 connected to the network device 202 (including terminal device 204_1, terminal device 204_2, ... terminal device 204_n in the figure), and another terminal device 202_n+ 1.
  • the terminal device 202_n+m is also connected to the network device 202 .
  • the network device 201 and the network device 202 need to jointly receive the signals of the UE group 4 and measure the channels of the UE group 4 .
  • the network device 201 and the network device 202 may specifically be access network devices, such as the devices in (R)AN in FIG. 4 , or the network device 201 and the network device 202 may specifically be the core network capable of information exchange with terminal devices network element.
  • One or more terminal devices 102 may be the above-mentioned terminal devices in FIG. 4 .
  • different scrambling code sequences are allocated between different cells, and the scrambling code sequences are not orthogonal to each other. For example, UE group 3 and UE group 4 in FIG. Another scrambling sequence is used. Then, since UE group 4 and UE group 5 use different scrambling code sequences, when the network device 202 receives the signal of UE group 4, the DMRS of UE group 5 will cause strong interference to the DMRS of UE group 4, thereby causing the UE group The channel estimation performance of 4 degrades severely.
  • a scrambling code sequence is superimposed with 4 long OCCs to obtain 4 DMRSs occupying the same RE ports as p0, p1, p4, and p5,
  • a new set of 4-length OCCs is introduced, and 4 DMRSs can be added, which can be recorded as ports p0', p1', p4', p5', then the DMRS and ports corresponding to ports p0', p1', p4', p5'
  • the DMRSs corresponding to p0, p1, p4, and p5 occupy the same RE.
  • an embodiment of the present application provides a communication method. As shown in FIG. 7 , the method includes: S301 .
  • a network device sends a first instruction.
  • the network device may be an access network device, for example, the network device may be the device in (R)AN in FIG. 4 , or the network device may be a network element in the core network capable of information interaction with the terminal device.
  • the preset field included in the first signaling indicates the first reference signal combination.
  • the first reference signal combination includes at least one reference signal.
  • the values of the preset fields included in the first signaling are different, and correspond to each reference signal combination respectively. That is, when different values are assigned to the preset fields included in the first signaling, the first signaling may correspond to different reference signal combinations. Furthermore, the first signaling with different preset field values may be sent by the network device to indicate different reference signal combinations to the receiving end device.
  • the first signaling may be downlink control information (downlink control information, DCI).
  • DCI downlink control information
  • Each reference signal combination may be a combination of DMRSs.
  • the reference signal set includes reference signal set (for the convenience of distinguishing the reference signal set from other reference signal sets, the reference signal set is hereinafter referred to as the "first reference signal set").
  • the above reference signal combinations include combination 1, combination 2, and combination 3.
  • combination 1 includes reference signal a and reference signal b
  • combination 2 includes reference signal c, reference signal d, and reference signal e
  • combination 3 includes reference signal f and reference signal g.
  • the first reference signal set includes reference signal a, reference signal b, reference signal c, reference signal d, reference signal e, reference signal f, and reference signal g.
  • reference signals in different reference signal combinations may have intersections.
  • the above reference signal combinations include combination 1 and combination 2, wherein combination 1 includes reference signal h, and combination 2 includes reference signal h and reference signal i.
  • the first reference signal set includes reference signal h and reference signal i.
  • the first reference signal set includes at least two reference signal groups.
  • r(m) is a pseudo-random sequence.
  • r(m) is the scrambling sequence of the DMRS.
  • r(m) may reuse the generation method in the prior art, such as the generation method in the above-mentioned NR system.
  • A is a nonzero complex constant.
  • those skilled in the art can assign the value of A as required.
  • a technician can determine the value of A according to the transmit power of the device sending the reference signal. That is to say, the value of A may not be limited in this embodiment of the present application.
  • the length of the orthogonal code sequence W( ⁇ ) is N, and the value range of the independent variable is 0, 1, 2, ..., N-1.
  • the orthogonal code sequence W( ⁇ ) may be the OCC of each DMRS.
  • c( ) is a mask sequence whose length depends on M and is
  • any two reference signal groups in the above at least two reference signal groups are described as the first reference signal group and the second reference signal group, and the following conditions are satisfied:
  • Reference signal sequences of all reference signals in the first reference signal group The corresponding orthogonal code sequence W( ⁇ ) constitutes the first sequence group, and the reference signal sequences of all reference signals in the second reference signal group The corresponding orthogonal code sequences W( ⁇ ) form the second sequence group. in:
  • sequences in the first sequence group are orthogonal, and the sequences in the second sequence group are orthogonal. Any one of the sequences in the first sequence group is different from any one of the sequences in the second sequence group.
  • the first sequence set includes: sequence group a and sequence group b.
  • the sequence group a includes ⁇ 1,1,1,1 ⁇ , ⁇ 1,-1,1,-1 ⁇ , ⁇ 1,1,-1,-1 ⁇ , ⁇ 1,-1,-1, 1 ⁇ ;
  • sequence group b includes ⁇ 1,j,1,j ⁇ , ⁇ 1,-j,1,-j ⁇ , ⁇ 1,j,-1,-j ⁇ , ⁇ 1,-j,-1 ,j ⁇ . It can be seen that the sequences in the sequence group a are orthogonal, and the sequences in the sequence group b are orthogonal. Any sequence in sequence group a is different from any sequence in sequence group b.
  • the first sequence group includes at least two sequence subgroups
  • the second sequence group includes at least two sequence subgroups.
  • the sequences in one of the sequence subgroups in the first sequence group are orthogonal to the sequences in the partial sequence subgroup in the second sequence group.
  • the reference signal sequences of all reference signals in the first reference signal group The corresponding orthogonal code sequences W( ⁇ ) form the first sequence group in FIG. 8 , and the first sequence group includes two sequence subgroups: the first sequence subgroup and the second sequence subgroup.
  • Reference signal sequences of all reference signals in the second reference signal group The corresponding orthogonal code sequence W(t) forms the second sequence group in FIG. 8 , and the second sequence group includes two sequence subgroups: the third sequence subgroup and the fourth sequence subgroup.
  • the sequences in the first sequence group are orthogonal, and the sequences in the second sequence group are orthogonal. Any one of the sequences in the first sequence group is different from any one of the sequences in the second sequence group.
  • sequences in the first sequence group are orthogonal to sequences in the partial sequence subgroup in the second sequence group, and are not orthogonal to sequences in another partial sequence subgroup in the second sequence group. That is, in Figure 8, one of the following two conditions must be satisfied:
  • sequences in the first and first sequence subgroups are orthogonal to the sequences in the third sequence subgroup, and are not orthogonal to the sequences in the fourth sequence subgroup.
  • sequences in the second sequence subgroup are not orthogonal to the sequences in the third sequence subgroup, and are orthogonal to the sequences in the fourth sequence subgroup.
  • sequences in one sequence subgroup described in this application are not orthogonal to the sequences in another sequence subgroup, which specifically means that there are at least one pair of sequences that are not orthogonal between the two sequence subgroups.
  • the two sequence subgroups may also include orthogonal sequence pairs.
  • the sequences in the first sequence subgroup are not orthogonal to the sequences in the fourth sequence subgroup, that is, at least one sequence in the first sequence subgroup is not orthogonal to at least one sequence in the fourth sequence subgroup.
  • sequences in the first sequence subgroup are not orthogonal to the sequences in the third sequence subgroup, and are orthogonal to the sequences in the fourth sequence subgroup.
  • sequences in the second sequence subgroup are orthogonal to the sequences in the third sequence subgroup and are not orthogonal to the sequences in the fourth sequence subgroup.
  • sequence group a includes sequence subgroup 1 and sequence subgroup 2; sequence group b includes sequence subgroup 3 and sequence subgroup 4.
  • each sequence in sequence subgroup 1 is not orthogonal to each sequence in sequence subgroup 3, and each sequence in sequence subgroup 1 is orthogonal to each sequence in sequence subgroup 4;
  • Each sequence in 2 is orthogonal to each sequence in sequence subgroup 3, and each sequence in sequence subgroup 2 is not orthogonal to each sequence in sequence subgroup 4. That is to say: the sequences in a sequence subgroup in sequence group a are orthogonal to the sequences in the partial sequence subgroup in sequence group b.
  • the sequence c( ⁇ ) corresponding to the first sequence group is different from the sequence c( ⁇ ) corresponding to the second sequence group. That is, the reference signal sequences of all reference signals in the first reference signal group In the corresponding orthogonal code sequence W( ⁇ ), each sequence W( ⁇ ) in the same sequence group corresponds to the same sequence c( ⁇ ), and different sequence groups correspond to different sequences c( ⁇ ).
  • sequence c( ) satisfies:
  • e represents a sequence of length L, represents the ⁇ -th Kronic product of e
  • e when L is 2, e can be: ⁇ 1,1 ⁇ ; ⁇ 1,j ⁇ .
  • e is ⁇ 1,1 ⁇
  • c( ⁇ ) is the sequence ⁇ 1,1,1,...,1 ⁇ , that is, the sequence of all 1s, e is ⁇ 1,j ⁇
  • another different c( ⁇ ) can be : 4 is ⁇ 1,j,j,-1 ⁇
  • 8 is ⁇ 1,j,j,-1,j,-1,-1,-j ⁇
  • 16 is ⁇ 1,j ,j,-1,j,-1,-1,-j,j,-1,-1,-j,-1,-j,-j,1 ⁇ and so on. The same will be given below, and will not be repeated here.
  • the sequence r(m) corresponding to the first sequence group is the same as the sequence r(m) corresponding to the second sequence group. That is to say, all the reference signals in the first reference signal group and the second reference signal group have the same sequence r(m).
  • the "reference signal group” referred to in the foregoing description of the embodiments of the present application is a logical division of reference signals. That is to say, as long as the reference signals in the first reference signal set can be divided into at least two reference signal groups according to the above description of the present application. The storage and data processing of reference signals in different reference signal groups may not be distinguished.
  • the "sequence group” and “sequence subgroup” mentioned in the above description of the embodiments of this application are also logically divided into orthogonal code sequences W( ⁇ ) corresponding to different reference signal sequences.
  • the orthogonal code sequences W( ⁇ ) corresponding to the two or more reference signals belong to the same sequence subgroup.
  • two or more reference signals corresponding to the orthogonal code sequences in the same sequence subgroup are allocated to the same terminal device, thereby ensuring that the same terminal device There is no interference between the two or more transmitted reference signals.
  • allocating reference signals to other terminal equipments other than the above-mentioned terminal equipment it is convenient to allocate reference signals that do not interfere with the above-mentioned terminal equipments to other terminal equipments.
  • the reference signal combination set formed by the reference signal combinations corresponding to the first signaling with different preset field values satisfies:
  • the reference signal combination set is a proper subset of all possible reference signal combinations in the first reference signal set, and the reference signal combination set includes at least various combinations of reference signals corresponding to sequences in the same sequence subset.
  • the first reference signal set includes reference signal 0, reference signal 1, reference signal 2, and reference signal 3
  • all possible reference signal combinations in the first reference signal set are ⁇ 0 ⁇ , ⁇ 1 ⁇ , ⁇ 2 ⁇ , ⁇ 3 ⁇ , ⁇ 0,1 ⁇ , ⁇ 0,2 ⁇ , ⁇ 0,3 ⁇ , ⁇ 1,2 ⁇ , ⁇ 1,3 ⁇ , ⁇ 1,4 ⁇ , ⁇ 2,3 ⁇ , ⁇ 2 ,4 ⁇ , ⁇ 3,4 ⁇ , ⁇ 1,2,3 ⁇ , ⁇ 1,2,4 ⁇ , ⁇ 1,3,4 ⁇ , ⁇ 2,3,4 ⁇ , ⁇ 1,2,3,4 ⁇ , where, for example, ⁇ 0, 2 ⁇ indicates a combination including reference signal 0 and reference signal 2, and ⁇ 1 ⁇ indicates a combination including only reference signal 1.
  • the reference signal combination should include at least one reference signal. . All reference signal combinations that can be instructed by the first instruction also need to be a proper subset of all possible reference signal combinations in the first reference signal set.
  • the first sequence subgroup includes sequence 1, sequence 2, and sequence 3; the second sequence subgroup includes sequence 4, sequence 5, and sequence 3. 6; the third sequence subgroup includes sequence 7, sequence 8, and sequence 9; the fourth sequence subgroup includes sequence 10, sequence 11, and sequence 12.
  • the first reference signal combination indicated by the first instruction includes two or more reference signals
  • the first reference signal combination may be ⁇ 1,2 ⁇ or ⁇ 1,3 ⁇ or ⁇ 2,3 ⁇ or ⁇ 1,2,3 ⁇ , where ⁇ 1,2 ⁇ represents a combination including the reference signal corresponding to sequence 1 and the reference signal corresponding to sequence 2.
  • the second sequence subgroup, the third sequence subgroup, and the fourth sequence subgroup is assumed that the first sequence subgroup includes sequence 1, sequence 2, and sequence 3; the second sequence subgroup includes sequence 4, sequence 5, and sequence 3. 6; the third sequence subgroup includes sequence 7, sequence 8, and sequence 9; the fourth sequence subgroup includes sequence 10, sequence 11, and sequence 12.
  • the reference signal sequence corresponding to the sequence of the first sequence group and the reference signal sequence corresponding to the sequence of the second sequence group Mapped on the same subcarriers in the same resource block.
  • the reference signal sequence corresponding to the sequence of the first sequence group and the sequence corresponding to the sequence of the second sequence group may be The reference signal sequence multiplexes the same subcarriers.
  • the first item of the reference signal sequence corresponding to the first sequence group and the reference signal sequence corresponding to the second sequence group are both mapped to the same RE, and the second item is also mapped to the same RE, so that analogy.
  • the first reference signal set may include other reference signals.
  • the reference signal corresponding to the sequence of the first sequence group and the reference signal corresponding to the sequence of the second sequence group occupy the same RE.
  • Other reference signals may occupy different REs from reference signals corresponding to the sequences of the first sequence group.
  • the embodiments of the present application also provide specific sequences in the orthogonal code sequence W( ) corresponding to the reference signals in the first reference signal set when the orthogonal code sequences W( ) are of different lengths:
  • sequences of the first sequence group/second sequence group include the following sequences:
  • sequences of the first sequence group/second sequence group include the following sequences:
  • sequence of the first sequence group/second sequence group includes the following sequences:
  • Sequence subgroups include:
  • the first sequence subgroup ⁇ 1,1,1,1 ⁇ , ⁇ 1,-1,1,-1 ⁇ ;
  • Second sequence subgroup ⁇ 1,1,-1,-1 ⁇ , ⁇ 1,-1,-1,1 ⁇ ;
  • sequences of the first sequence group/second sequence group include the following sequences:
  • Sequence subgroups include:
  • the first sequence subgroup ⁇ 1,j,1,j ⁇ , ⁇ 1,-j,1,-j ⁇ ;
  • Second sequence subgroup ⁇ 1,j,-1,-j ⁇ , ⁇ 1,-j,-1,j ⁇ .
  • the first sequence group includes ⁇ 1,1,1,1 ⁇ , ⁇ 1,-1,1,-1 ⁇ , ⁇ 1,1,-1,-1 ⁇ , ⁇ 1,-1, -1,1 ⁇ ;
  • the second sequence group includes ⁇ 1,j,1,j ⁇ , ⁇ 1,-j,1,-j ⁇ , ⁇ 1,j,-1,-j ⁇ , ⁇ 1,-j ,-1,j ⁇ ;
  • the sequences in the first sequence group are orthogonal, and the sequences in the second sequence group are orthogonal.
  • the sequences in the partial sequence subgroup are orthogonal, and the sequences in the partial sequence subgroup are not orthogonal.
  • the cross-correlation value of non-orthogonal sequences is Among them, the cross-correlation of two N-long non-orthogonal sequences ⁇ a n ⁇ , ⁇ b n ⁇ is
  • Each sequence group obtains all the sequences in the sequence group according to a base sequence
  • the base sequence is ⁇ x 0 ,x 1 ⁇
  • each item of the 2-length Walsh code ⁇ w 0 ,w 1 ⁇ is multiplied to obtain ⁇ x 0 w 0 ,x 1 w 1 ⁇
  • S ⁇ x 0 w 0 ,x 1 w 1 ⁇
  • ⁇ w 0 ,w 1 ⁇ is any one of ⁇ 1,1 ⁇ , ⁇ 1,-1 ⁇
  • the base sequence is ⁇ 1,1 ⁇
  • the four sequences in the third sequence group can be obtained by the following formula: in but
  • Each row in represents a sequence in the first sequence group, and the following representations are similar.
  • the base sequence is ⁇ 1,j ⁇
  • the four sequences in the second sequence group can be obtained by the following formula: in but
  • the first instruction can be used to indicate that the two sequences in the first sequence subgroup correspond to The reference signal of the second sequence is allocated to the terminal equipment, or the reference signals corresponding to the two sequences in the second sequence subgroup are allocated to the terminal equipment. Further, the effect of allocating reference signals corresponding to the same sequence subgroup to the terminal equipment is achieved.
  • the schematic diagram of the DMRS mapping on one RB may be as shown in FIG. 9A . That is, the orthogonal code sequence of each reference signal corresponds to the same RE, that is, the first item W(0), the second item W(1), the third item W(2), The fourth term W(3) corresponds to the same RE respectively.
  • a schematic diagram of the mapping of the DMRS on one RB may be as shown in FIG. 10 . Other RBs are similar and are not drawn here.
  • the order of placing the items of the orthogonal code sequences in FIG. 9A and FIG. 10 is only an exemplary order. In the specific implementation process, different placement sequences can be adopted as required. For example, when the DMRS occupies one OFDM symbol and the DMRS is mapped on one RB, the placement method of the orthogonal code sequence of each reference signal can also be as shown in FIG. 9B , and of course other methods other than those shown in FIG. 9A and FIG. 9B can also be used. method, which is not limited in this application.
  • sequences of the first sequence group/second sequence group include the following sequences:
  • sequences of the first sequence group/second sequence group include the following sequences:
  • sequences of the first sequence group/second sequence group include the following sequences:
  • sequence of the first sequence group/second sequence group includes the following sequences: ⁇ 1,-j,-j,-1,1,-j,-j,-1 ⁇ , ⁇ 1,j ,-j,1,1,j,-j,1 ⁇ , ⁇ 1,-j,j,1,1,-j,j,1 ⁇ , ⁇ 1,j,j,-1,1,j, j,-1 ⁇ , ⁇ 1,-j,-j,-1,-1,j,j,1 ⁇ , ⁇ 1,j,-j,1,-1,-j,j,-1 ⁇ , ⁇ 1,-j,j,1,-1,j,-j,-1 ⁇ , ⁇ 1,j,j,1,-1,j,-j,-1 ⁇ , ⁇ 1,j,j,-1,-1,-j,-j,1 ⁇ ;
  • the sequence subgroup includes: the first sequence subgroup: ⁇ 1,-j,-j,-1,1,-j,-j,-1 ⁇ , ⁇ 1,j,-j,1,1,j,- j,1 ⁇ , ⁇ 1,-j,j,1,1,-j,j,1 ⁇ , ⁇ 1,j,j,-1,1,j,j,-1 ⁇ ; second sequence subgroup : ⁇ 1,-j,-j,-1,-1,j,j,1 ⁇ , ⁇ 1,j,-j,1,-1,-j,j,-1 ⁇ , ⁇ 1,-j ,j,1,-1,j,-j,-1 ⁇ , ⁇ 1,j,j,-1 ⁇ , ⁇ 1,j,j,-1,-1,-j,-j,1 ⁇ ;
  • sequences of the first sequence group/second sequence group include the following sequences:
  • the sequence subgroup includes: the first sequence subgroup: ⁇ 1,-1,-j,-j,1,-1,-j,-j ⁇ , ⁇ 1,1,-j,j,1,1,- j,j ⁇ , ⁇ 1,-1,j,j,1,-1,j,j ⁇ , ⁇ 1,1,j,-j,1,1,j,-j ⁇ ; second sequence subgroup : ⁇ 1,-1,-j,-j,-1,1,j,j ⁇ , ⁇ 1,1,-j,j,-1,-1,j,-j ⁇ , ⁇ 1,-1 ,j,j,-1,1,-j,-j ⁇ , ⁇ 1,1,j,-j,-1,-1,-j,j ⁇ ;
  • sequences of the first sequence group/second sequence group include the following sequences:
  • the sequence subgroup includes: the first sequence subgroup: ⁇ 1,1,1,1,1,1,1 ⁇ , ⁇ 1,-1,1,-1,1,-1 ⁇ , ⁇ 1,1,-1,-1,1,1,-1 ⁇ , ⁇ 1,-1,-1,1,1,-1,-1,1 ⁇ ; the second sequence subgroup : ⁇ 1,1,1,1,-1,-1,-1,-1 ⁇ , ⁇ 1,-1,1,-1,-1,1,-1,1 ⁇ , ⁇ 1,1, -1,-1,-1,1,1 ⁇ , ⁇ 1,-1,-1,-1,1,1,1,-1 ⁇ ;
  • sequences of the first sequence group/second sequence group include the following sequences:
  • Sequence subgroups include:
  • First sequence subgroup ⁇ 1,-j,-1,-j,1,-j,-1,-j ⁇ , ⁇ 1,j,-1,j,1,j,-1,j ⁇ , ⁇ 1,-j,1,j,1,-j,1,j ⁇ , ⁇ 1,j,1,-j,1,-j ⁇ ;
  • second sequence subgroup ⁇ 1,- j,-1,-j,-1,j,1,j ⁇ , ⁇ 1,j,-1,j,-1,-j,1,-j ⁇ , ⁇ 1,-j,1,j, -1,j,-1,-j ⁇ , ⁇ 1,j,1,-j,-1,-j,-1,j ⁇ .
  • the first sequence group includes ⁇ 1,-j,-j,-1,1,-j,-j,-1 ⁇ , ⁇ 1,j,-j, 1,1,j,-j,1 ⁇ , ⁇ 1,-j,j,1,1,-j,j,1 ⁇ , ⁇ 1,j,j,-1,1,j,j,-1 ⁇ , ⁇ 1,-j,-j,-1,-1,j,j,1 ⁇ , ⁇ 1,j,-j,-1,-1,j,j,1 ⁇ , ⁇ 1,j,-j,1,-1,-j,j,-1 ⁇ , ⁇ 1,- j,j,-1 ⁇ , ⁇ 1,j,j,-1,-1,-j,-j,1 ⁇ ;
  • the second sequence group includes ⁇ 1,-1 ,-j,-j,1,-1,-j,-j ⁇ , ⁇ 1,1,-j,j,1,1,-j,j ⁇ , ⁇ 1,-1,j,j,1 ,-1,j,j ⁇ , ⁇ 1,1,j,-j,1,1,j,-j ⁇ , ⁇ 1,-1,
  • Each sequence group gets all the sequences in the sequence group according to a base sequence, the base sequence is ⁇ x 0 ,x 1 ,x 2 ,x 3 ⁇ , and the 4-length Walsh code ⁇ w 0 ,w 1 ,w 2 ,w 3 ⁇
  • the base sequence is ⁇ 1,-1,-j,-j ⁇ , and the sequence of eight can be obtained by the following formula: in but
  • the base sequence is ⁇ 1,1,1,1 ⁇ , and the sequence of eight can be obtained by the following formula: in but
  • the base sequence is ⁇ 1,-j,-1,-j ⁇ , and the sequence of eight can be obtained by the following formula: in but
  • the sequences of the second sequence group include the following sequences: ⁇ 1,1,1,1,1,1,1 ⁇ , ⁇ 1,-1,1,-1,1,-1,1,-1 ⁇ , ⁇ 1,1,-1,-1,1,1,-1,-1 ⁇ , ⁇ 1,-1,-1,1,1,-1,-1 ⁇ , ⁇ 1,-1,-1,1,1,-1,-1,1 ⁇ , ⁇ 1,1 ,1,1,-1,-1,-1 ⁇ , ⁇ 1,-1,1,-1,-1,-1 ⁇ , ⁇ 1,-1,1,-1,-1,1,-1,1 ⁇ , ⁇ 1,1,-1,-1,-1,-1,1,1 ⁇ , ⁇ 1,-1,-1,-1,1,1,1 ⁇ , ⁇ 1,-1,-1,1,-1,1,1,-1 ⁇ ;
  • Sequence subgroups include:
  • Second sequence subgroup ⁇ 1,1,1,1,-1,-1,-1,-1 ⁇ , ⁇ 1,-1,1,-1,-1,1,-1,1 ⁇ , ⁇ 1,1,-1,-1,-1,-1,1,1 ⁇ , ⁇ 1,-1,-1,1,-1,1,1,-1 ⁇ ;
  • sequences of the first sequence group/second sequence group include the following sequences:
  • Sequence subgroups include:
  • Second sequence subgroup ⁇ 1,1,1,-1,-1,-1,-1,1 ⁇ , ⁇ 1,-1,1,1,-1,1,-1,-1 ⁇ , ⁇ 1,1,-1,1,-1,-1,1,-1 ⁇ , ⁇ 1,-1,-1,-1,1,1,1 ⁇ .
  • Each sequence group gets all the sequences in the sequence group according to a base sequence, the base sequence is ⁇ x 0 ,x 1 ,x 2 ,x 3 ⁇ , and the 4-length Walsh code ⁇ w 0 ,w 1 ,w 2 ,w 3 ⁇
  • the base sequence is ⁇ 1,1,1,-1 ⁇ , and the eight sequences in the sixth sequence group can be obtained by the following formula: in but
  • the first instruction may be used to indicate that four The reference signals corresponding to the sequences are allocated to the terminal equipment, or the reference signals corresponding to the four sequences in the first sequence subgroup are allocated to the terminal equipment. Further, the effect of allocating reference signals corresponding to the same sequence subgroup to the terminal equipment is achieved.
  • the orthogonal code sequence of each reference signal corresponds to the same RE, that is, the first item W(0), the second item W(1), the third item W(2), The fourth item W(3), the fifth item W(4), the sixth item W(5), the seventh item W(6), and the eighth item W(7) respectively correspond to the same RE.
  • the terminal device receives the first instruction.
  • the method when the method provided by the embodiment of the present application is applied to the network device sending an instruction (for example, it may be downlink control information (DCI)) to the terminal device, so that the terminal device determines the waiting list according to the instruction
  • the instruction for example, it may be downlink control information (DCI)
  • the reference signal to be sent for example, the DMRS to be sent
  • the method further includes:
  • the terminal device sends at least one reference signal, so that the network device receives the at least one reference signal.
  • the terminal device may determine at least one reference signal in the first reference signal combination according to the value of the preset field in the first instruction, and then transmit the at least one reference signal.
  • the terminal device stores the reference signal sequence of each reference signal in the first reference signal set The corresponding orthogonal code sequence W( ⁇ ). Then, after determining at least one reference signal according to the first instruction, the terminal device can select the orthogonal code sequence W( ⁇ ) corresponding to the above at least one reference signal from the stored orthogonal code sequence W( ⁇ ), and according to the above formula A reference signal sequence of at least one reference signal is obtained to transmit the at least one reference signal.
  • the terminal device may not store the reference signal sequence of each reference signal in the first reference signal set in advance.
  • the corresponding orthogonal code sequence W( ⁇ ) is directly generated, and the orthogonal code sequence W( ⁇ ) corresponding to the at least one reference signal is directly generated.
  • the present application may not limit the manner in which the terminal device obtains the reference signal sequence of at least one reference signal.
  • the reference signal sequence of at least one reference signal may be mapped to M REs, respectively, to generate and transmit the first signal.
  • the method when the method provided by the embodiment of the present application is applied to the network device sending an instruction (for example, it may be downlink control information (DCI)) to the terminal device, so that the terminal device can determine according to the instruction
  • the reference signal for example, DMRS
  • the method includes:
  • the network device sends a first instruction.
  • the terminal device receives the first instruction.
  • S703 The network device sends at least one reference signal, and the terminal device receives at least one reference signal.
  • the reference signal sequence of each reference signal in the first reference signal set may be pre-stored in the network device The corresponding orthogonal code sequence W( ⁇ ). Then, after determining the at least one reference signal to be sent, the network device can select the orthogonal code sequence W( ⁇ ) corresponding to the at least one reference signal from the stored orthogonal code sequence W( ⁇ ), and according to the above formula 1 A reference signal sequence of at least one reference signal is obtained in order to transmit the at least one reference signal. Specifically, the network device may map the reference signal sequence of at least one reference signal to the M REs, respectively, to generate and send the first signal.
  • the terminal device may determine at least one reference signal in the first reference signal combination according to the value of the preset field in the first instruction. Furthermore, the terminal device may process the first signal including at least one reference signal from the network device, for example, may evaluate the channel where the reference signal is located.
  • any two reference signal groups in the at least two reference signal groups included in the first reference signal set satisfy a specific condition (that is, all the reference signal groups in the first reference signal group reference signal sequence
  • the corresponding orthogonal code sequence W( ⁇ ) constitutes the first sequence group, and the reference signal sequences of all reference signals in the second reference signal group
  • the corresponding orthogonal code sequences W( ⁇ ) form a second sequence group; the sequences in the first sequence group are orthogonal; the sequences in the second sequence group are orthogonal; the first sequence group includes at least two sequence subgroups;
  • the second sequence group includes at least two sequence subgroups; the sequence in one sequence subgroup in the first sequence group is orthogonal to the sequence in the partial sequence subgroup in the second sequence group; the sequences in the first sequence group and The sequences in the second sequence group are different), so compared with the prior art, the above method of the present application can provide more orthogonal code sequences, and each orthogonal code sequence is at least in line with other orthogonal
  • each orthogonal code sequence is orthogonal to the partial orthogonal code sequences in other sequence groups.
  • the reference signal obtained by using the above-mentioned orthogonal code sequence of the present application can be kept orthogonal to more reference signals, thereby reducing the interference between reference signals of different layers.
  • the orthogonal code sequence corresponding to the DMRS in UE group 3 can be made to use the same sequence subgroup in the same sequence group.
  • Orthogonal code sequence for example, the orthogonal code sequence in the first sequence subgroup in the first sequence group
  • use the second sequence subgroup in the first sequence subgroup for the orthogonal code sequence corresponding to the DMRS in UE group 4 and the orthogonal code sequence of the DMRS in UE group 5 uses the orthogonal code sequence in the third sequence subgroup in the second sequence group (wherein the sequence in the third sequence subgroup is the same as the The sequences in the subgroup of two sequences are orthogonal). In this way, the interference of reference signals between different layers can be reduced while increasing the number of transmission layers.
  • the receiving device and/or the transmitting device may perform some or all of the steps in the embodiments of the present application. These steps or operations are only examples. In the embodiments of the present application, other operations may also be performed or Variations of various operations. In addition, various steps may be performed in different orders presented in the embodiments of the present application, and may not be required to perform all the operations in the embodiments of the present application.
  • the embodiments provided in this application may be related to each other, and may be referred to or referenced to each other.
  • the above embodiments mainly introduce the solutions provided by the embodiments of the present application from the perspective of interaction between devices.
  • the above-mentioned receiving device or transmitting device includes corresponding hardware structures and/or software modules for executing each function.
  • the unit of each example described in conjunction with the embodiments disclosed herein can be implemented in hardware or in the form of a combination of hardware and computer software. Whether a function is performed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.
  • a device may be divided into functional modules according to the foregoing method examples.
  • each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing unit. in the module.
  • the above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules.
  • the division of modules in the embodiment of the present application is schematic, and is only a logical function division, and another division manner may be used in actual implementation.
  • FIG. 13 it is a schematic diagram of the composition of a communication apparatus 40 according to an embodiment of the present application.
  • the communication apparatus 40 may be a chip or a system-on-chip in a network device or a terminal device.
  • the communication apparatus 40 can be used to perform the function of sending reference signals by the network equipment or terminal equipment designed in the above embodiments.
  • the communication device 40 includes:
  • the communication unit 401 is configured to receive or send first signaling; wherein, a preset field included in the first signaling indicates a first reference signal combination; the first reference signal combination includes at least one reference signal; Wherein, different values of the preset fields included in the first signaling correspond to respective reference signal combinations; all reference signals included in the reference signal combinations form a reference signal set, and the reference signal
  • the set includes at least two reference signal groups; the reference signal sequence of each reference signal in the at least two reference signal groups Satisfy:
  • r(m) is a pseudo-random sequence
  • m is a non-negative integer
  • A is a non-zero complex constant
  • the length of the orthogonal code sequence W( ⁇ ) is N
  • the value range of the independent variable is 0, 1, 2,..., N-1
  • t m mod N
  • c( ) is a mask sequence
  • the value range of the independent variable is a non-negative integer
  • any two reference signal groups in the at least two reference signal groups meet the following conditions: the reference signal sequences of all reference signals in the first reference signal group
  • the corresponding orthogonal code sequence W( ⁇ ) constitutes the first sequence group, and the reference signal sequences of all reference signals in the second reference signal group
  • the corresponding orthogonal code sequences W( ⁇ ) form a second sequence group; the sequences in the first sequence group are orthogonal; the sequences in the second sequence group are orthogonal; the first sequence group includes at least two sequence subgroups; the second sequence group includes at least two sequence subgroups; a sequence in one sequence subgroup in the first sequence group and a sequence in a partial sequence subgroup in the second sequence group
  • the sequences are orthogonal; the sequences in the first sequence group and the sequences in the second sequence group are different;
  • sequence c( ⁇ ) corresponding to the first sequence group is different from the sequence c( ⁇ ) corresponding to the second sequence group;
  • sequence r(m) corresponding to the first sequence group is different from the sequence c( ⁇ ) corresponding to the second sequence group The sequence r(m) corresponding to the group is the same;
  • a reference signal sending unit 402 configured to generate and send the at least one reference signal.
  • the orthogonal code sequences W( ⁇ ) corresponding to the two or more than two reference signals belong to the same sequence subgroup.
  • the reference signal combinations form a reference signal combination set, and the reference signal combination set satisfies:
  • the reference signal combination set is a proper subset of all possible reference signal combinations in the reference signal set, and the reference signal combination set includes at least various combinations of reference signals corresponding to sequences in the same sequence subset.
  • the reference signal sequence corresponding to the sequence of the first sequence group and the reference signal corresponding to the sequence of the second sequence group are mapped on the same subcarriers in the same resource blocks.
  • sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,1,1,1 ⁇ , ⁇ 1,-1,1,-1 ⁇ , ⁇ 1,1, -1,-1 ⁇ , ⁇ 1,-1,-1,1 ⁇ ; or, the sequence of the first sequence group/second sequence group includes the following sequences: ⁇ 1,j,1,j ⁇ , ⁇ 1,-j,1,-j ⁇ , ⁇ 1,j,-1,-j ⁇ , ⁇ 1,-j,-1,j ⁇ ; where j is an imaginary unit.
  • sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,1,1,1 ⁇ , ⁇ 1,-1,1,-1 ⁇ , ⁇ 1,1 ,-1,-1 ⁇ , ⁇ 1,-1,-1,1 ⁇ ; sequence subgroups include: first sequence subgroup: ⁇ 1,1,1,1 ⁇ , ⁇ 1,-1,1,- 1 ⁇ ; the second sequence subgroup: ⁇ 1,1,-1,-1 ⁇ , ⁇ 1,-1,-1,1 ⁇ ; or, the sequence of the first sequence group/second sequence group includes the following: When describing the sequence: ⁇ 1,j,1,j ⁇ , ⁇ 1,-j,1,-j ⁇ , ⁇ 1,j,-1,-j ⁇ , ⁇ 1,-j,-1,j ⁇ ; The sequence subgroup includes: the first sequence subgroup: ⁇ 1,j,1,j ⁇ , ⁇ 1,-j,1,-j ⁇ ; the second sequence subgroup: ⁇ 1,j,-1,-j ⁇ , ⁇ 1,-j,-1,j ⁇ .
  • sequence of the first sequence group/second sequence group includes the following sequences: ⁇ 1,-j,-j,-1,1,-j,-j,-1 ⁇ , ⁇ 1, j,-j,1,1,j,-j,1 ⁇ , ⁇ 1,-j,j,1,1,-j,j,1 ⁇ , ⁇ 1,j,j,-1,1,j ,j,1 ⁇ , ⁇ 1,j,j,-1,1,j ,j,-1 ⁇ , ⁇ 1,-j,-j,-1 ⁇ , ⁇ 1,-j,-j,1,-1,-j,j,-1 ⁇ , ⁇ 1,-j,j,1,-1,j,-j,-1 ⁇ , ⁇ 1,j,j,-1,-1,-j,-j,1 ⁇ ; or, the first The sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,-1,-j,-j,1,-1,-j,-j ⁇ , ⁇ 1,1,-j,j,1 ,1,-j,j ⁇ , ⁇ 1,-1,j,j,1,
  • sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,-j,-j,-1,1,-j,-j,-1 ⁇ , ⁇ 1 ,j,-j,1,1,j,-j,1 ⁇ , ⁇ 1,-j,j,1,1,-j,j,1 ⁇ , ⁇ 1,j,j,-1,1, j,j,-1 ⁇ , ⁇ 1,-j,-j,-1 ⁇ , ⁇ 1,-j,-j,-1 ⁇ , ⁇ 1,-j,-j,-1,-1,j,j,1 ⁇ , ⁇ 1,j,j,-1,-j,-1 ⁇ , ⁇ 1,j,j,-1,-1,-j,-j,1 ⁇ ; sequence subgroups include : First sequence subgroup: ⁇ 1,-j,-j,-1,1,-j,-j,-1 ⁇ , ⁇ 1,j,-j,1,1,j,-j,1 ⁇ , ⁇ 1,-j,j,1 ⁇ , ⁇ 1,j,j,-1 ⁇ 1,j,j,-1 ⁇ 1,j,
  • sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,1,1,1,1,1,1 ⁇ , ⁇ 1,-1,1,- 1,1,-1,1,-1 ⁇ , ⁇ 1,1,-1,-1,1,1,-1,-1 ⁇ , ⁇ 1,-1,-1,1,1,-1 ,-1,1 ⁇ , ⁇ 1,1,1,1,-1,-1,-1,-1 ⁇ , ⁇ 1,-1,1,-1,-1,-1 ⁇ , ⁇ 1,-1,1,-1,-1,1,-1,1 ⁇ , ⁇ 1,1,-1,-1,-1,1,1 ⁇ , ⁇ 1,-1,-1,-1,1,1,-1 ⁇ ; or, the first The sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,1,1,-1,1,1,1,-1 ⁇ , ⁇ 1,-1,1,1,1,-1, 1,1 ⁇ , ⁇ 1,1,-1,1,1,1,-1,1 ⁇ , ⁇ 1,-1,-1,-1,-1 ⁇ , ⁇ 1,-1,-1,-1,-1 ⁇ , ⁇ 1,-1,1,-1,1,-1 ⁇ , ⁇ 1,-1,-1,-1
  • sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,1,1,1,1,1,1 ⁇ , ⁇ 1,-1,1, -1,1,-1 ⁇ , ⁇ 1,1,-1,-1,1,1,-1 ⁇ , ⁇ 1,1,-1,-1,1,1,- 1,-1,1 ⁇ , ⁇ 1,1,1,1,-1,-1,-1,-1 ⁇ , ⁇ 1,-1,1,-1,-1,-1 ⁇ , ⁇ 1,-1,1,-1,-1 ⁇ , ⁇ 1,-1,1,-1,-1,1 ⁇ , ⁇ 1,1,-1,-1,-1,-1,1,1 ⁇ , ⁇ 1,-1,-1,1,-1,1,1,-1 ⁇ ; sequence subgroups include : First sequence subgroup: ⁇ 1,1,1,1,1,1,1 ⁇ , ⁇ 1,-1,1,-1,1,-1,1,-1 ⁇ , ⁇ 1, 1,-1,-1,1,1,-1,-1 ⁇ , ⁇ 1,-1,-1,1,1,-1,-1,1 ⁇ ; second sequence subgroup: ⁇ 1, 1,1,1,-1,-1,-1,-1 ⁇ , ⁇ 1,-1,1,-1,-1,
  • each reference signal in each reference signal combination is a demodulation reference signal DMRS; the first signaling is downlink control information DCI.
  • FIG. 14 it is a schematic diagram of the composition of a communication apparatus 50 according to an embodiment of the present application.
  • the communication apparatus 50 may be a chip or a system-on-chip in a network device or a terminal device.
  • the communication apparatus 50 may be configured to perform the function of receiving the reference signal by the network device or the terminal device designed in the foregoing embodiments.
  • the communication device 50 includes:
  • the communication unit 501 is configured to receive or send first signaling; wherein, a preset field included in the first signaling indicates a first reference signal combination; the first reference signal combination includes at least one reference signal; wherein, Different values of the preset fields included in the first signaling correspond to respective reference signal combinations; all reference signals included in the reference signal combinations form a reference signal set, and the reference signal set includes at least two reference signal groups; reference signal sequences of each reference signal in the at least two reference signal groups Satisfy:
  • r(m) is a pseudo-random sequence
  • m is a non-negative integer
  • A is a non-zero complex constant
  • the length of the orthogonal code sequence W( ⁇ ) is N
  • the value range of the independent variable is 0, 1, 2,...,N -1
  • t m mod N
  • c( ) is the mask sequence
  • any two reference signal groups in the at least two reference signal groups meet the following conditions: the reference signal sequences of all reference signals in the first reference signal group
  • the corresponding orthogonal code sequence W( ⁇ ) constitutes the first sequence group, and the reference signal sequences of all reference signals in the second reference signal group
  • the corresponding orthogonal code sequences W( ⁇ ) form a second sequence group; the sequences in the first sequence group are orthogonal; the sequences in the second sequence group are orthogonal; the first sequence group includes at least two sequence subgroups; the second sequence group includes at least two sequence subgroups; a sequence in one sequence subgroup in the first sequence group and a sequence in a partial sequence subgroup in the second sequence group
  • the sequences are orthogonal; the sequences in the first sequence group and the sequences in the second sequence group are different;
  • sequence c( ⁇ ) corresponding to the first sequence group is different from the sequence c( ⁇ ) corresponding to the second sequence group;
  • sequence r(m) corresponding to the first sequence group is different from the sequence c( ⁇ ) corresponding to the second sequence group The sequence r(m) corresponding to the group is the same;
  • the orthogonal code sequences W( ⁇ ) corresponding to the two or more than two reference signals belong to the same sequence subgroup.
  • the reference signal combinations form a reference signal combination set, and the reference signal combination set satisfies:
  • the reference signal combination set is a proper subset of all possible reference signal combinations in the reference signal set, and the reference signal combination set at least includes various combinations of reference signals corresponding to sequences in the same sequence subset.
  • the reference signal sequence corresponding to the sequence of the first sequence group and the reference signal corresponding to the sequence of the second sequence group are mapped on the same subcarriers in the same resource blocks.
  • sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,1,1,1 ⁇ , ⁇ 1,-1,1,-1 ⁇ , ⁇ 1,1, -1,-1 ⁇ , ⁇ 1,-1,-1,1 ⁇ ; or, the sequence of the first sequence group/second sequence group includes the following sequences: ⁇ 1,j,1,j ⁇ , ⁇ 1,-j,1,-j ⁇ , ⁇ 1,j,-1,-j ⁇ , ⁇ 1,-j,-1,j ⁇ ; where j is an imaginary unit.
  • sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,1,1,1 ⁇ , ⁇ 1,-1,1,-1 ⁇ , ⁇ 1,1 ,-1,-1 ⁇ , ⁇ 1,-1,-1,1 ⁇ ; sequence subgroups include: first sequence subgroup: ⁇ 1,1,1,1 ⁇ , ⁇ 1,-1,1,- 1 ⁇ ; the second sequence subgroup: ⁇ 1,1,-1,-1 ⁇ , ⁇ 1,-1,-1,1 ⁇ ; or, the sequence of the first sequence group/second sequence group includes the following: When describing the sequence: ⁇ 1,j,1,j ⁇ , ⁇ 1,-j,1,-j ⁇ , ⁇ 1,j,-1,-j ⁇ , ⁇ 1,-j,-1,j ⁇ ; The sequence subgroup includes: the first sequence subgroup: ⁇ 1,j,1,j ⁇ , ⁇ 1,-j,1,-j ⁇ ; the second sequence subgroup: ⁇ 1,j,-1,-j ⁇ , ⁇ 1,-j,-1,j ⁇ .
  • sequence of the first sequence group/second sequence group includes the following sequences: ⁇ 1,-j,-j,-1,1,-j,-j,-1 ⁇ , ⁇ 1, j,-j,1,1,j,-j,1 ⁇ , ⁇ 1,-j,j,1,1,-j,j,1 ⁇ , ⁇ 1,j,j,-1,1,j ,j,1 ⁇ , ⁇ 1,j,j,-1,1,j ,j,-1 ⁇ , ⁇ 1,-j,-j,-1 ⁇ , ⁇ 1,-j,-j,1,-1,-j,j,-1 ⁇ , ⁇ 1,-j,j,1,-1,j,-j,-1 ⁇ , ⁇ 1,j,j,-1,-1,-j,-j,1 ⁇ ; or, the first The sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,-1,-j,-j,1,-1,-j,-j ⁇ , ⁇ 1,1,-j,j,1 ,1,-j,j ⁇ , ⁇ 1,-1,j,j,1,
  • sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,-j,-j,-1,1,-j,-j,-1 ⁇ , ⁇ 1 ,j,-j,1,1,j,-j,1 ⁇ , ⁇ 1,-j,j,1,1,-j,j,1 ⁇ , ⁇ 1,j,j,-1,1, j,j,-1 ⁇ , ⁇ 1,-j,-j,-1 ⁇ , ⁇ 1,-j,-j,-1 ⁇ , ⁇ 1,-j,-j,-1,-1,j,j,1 ⁇ , ⁇ 1,j,j,-1,-j,-1 ⁇ , ⁇ 1,j,j,-1,-1,-j,-j,1 ⁇ ; sequence subgroups include : First sequence subgroup: ⁇ 1,-j,-j,-1,1,-j,-j,-1 ⁇ , ⁇ 1,j,-j,1,1,j,-j,1 ⁇ , ⁇ 1,-j,j,1 ⁇ , ⁇ 1,j,j,-1 ⁇ 1,j,j,-1 ⁇ 1,j,
  • sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,1,1,1,1,1,1 ⁇ , ⁇ 1,-1,1,- 1,1,-1,1,-1 ⁇ , ⁇ 1,1,-1,-1,1,1,-1,-1 ⁇ , ⁇ 1,-1,-1,1,1,-1 ,-1,1 ⁇ , ⁇ 1,1,1,1,-1,-1,-1,-1 ⁇ , ⁇ 1,-1,1,-1,-1,-1 ⁇ , ⁇ 1,-1,1,-1,-1,1,-1,1 ⁇ , ⁇ 1,1,-1,-1,-1,1,1 ⁇ , ⁇ 1,-1,-1,-1,1,1,-1 ⁇ ; or, the first The sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,1,1,-1,1,1,1,-1 ⁇ , ⁇ 1,-1,1,1,1,-1, 1,1 ⁇ , ⁇ 1,1,-1,1,1,1,-1,1 ⁇ , ⁇ 1,-1,-1,-1,-1 ⁇ , ⁇ 1,-1,-1,-1,-1 ⁇ , ⁇ 1,-1,1,-1,1,-1 ⁇ , ⁇ 1,-1,-1,-1
  • sequences of the first sequence group/second sequence group include the following sequences: ⁇ 1,1,1,1,1,1,1 ⁇ , ⁇ 1,-1,1, -1,1,-1 ⁇ , ⁇ 1,1,-1,-1,1,1,-1 ⁇ , ⁇ 1,1,-1,-1,1,1,- 1,-1,1 ⁇ , ⁇ 1,1,1,1,-1,-1,-1,-1 ⁇ , ⁇ 1,-1,1,-1,-1,-1 ⁇ , ⁇ 1,-1,1,-1,-1 ⁇ , ⁇ 1,-1,1,-1,-1,1 ⁇ , ⁇ 1,1,-1,-1,-1,-1,1,1 ⁇ , ⁇ 1,-1,-1,1,-1,1,1,-1 ⁇ ; sequence subgroups include : First sequence subgroup: ⁇ 1,1,1,1,1,1,1 ⁇ , ⁇ 1,-1,1,-1,1,-1,1,-1 ⁇ , ⁇ 1, 1,-1,-1,1,1,-1,-1 ⁇ , ⁇ 1,-1,-1,1,1,-1,-1,1 ⁇ ; second sequence subgroup: ⁇ 1, 1,1,1,-1,-1,-1,-1 ⁇ , ⁇ 1,-1,1,-1,-1,
  • each reference signal in each reference signal combination is a demodulation reference signal DMRS; the first signaling is downlink control information DCI.
  • FIG. 15 shows a schematic diagram of the composition of a communication device 60 .
  • the communication device 60 includes: at least one processor 601 and at least one interface circuit 604 .
  • the communication device 60 may further include a communication line 602 and a memory 603 .
  • the processor 601 can be a general-purpose central processing unit (central processing unit, CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more processors for controlling the execution of the programs of the present application. integrated circuit.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • Communication line 602 may include a path to communicate information between the aforementioned components.
  • Interface circuit 604 using any transceiver-like device, for communicating with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc. .
  • RAN radio access network
  • WLAN wireless local area networks
  • Memory 603 may be read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM), or other types of storage devices that can store information and instructions It can also be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disk storage, CD-ROM storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or capable of carrying or storing program code in the form of instructions or data structures and capable of being accessed by a computer any other medium, but not limited to.
  • the memory may exist independently and be connected to the processor through communication line 602 .
  • the memory can also be integrated with the processor.
  • the memory 603 is used for storing computer-executed instructions for executing the solutions of the present application, and the execution is controlled by the processor 601 .
  • the processor 601 is configured to execute the computer-executed instructions stored in the memory 603, thereby implementing the communication method provided by the embodiment of the present application.
  • the communication apparatus 60 when the processor 601 executes the instructions stored in the memory 603, the communication apparatus 60 is caused to perform the operations required to be performed by the network device as shown in FIG. 7 or FIG. 12 .
  • the communication apparatus 60 when the processor 601 executes the instructions stored in the memory 603, the communication apparatus 60 is caused to perform the operations that the terminal device as shown in FIG. 7 or FIG. 12 needs to perform.
  • the computer-executed instructions in the embodiment of the present application may also be referred to as application code, which is not specifically limited in the embodiment of the present application.
  • the processor 601 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 13 .
  • the apparatus 60 may include multiple processors, such as the processor 601 and the processor 607 in FIG. 13 .
  • processors can be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor.
  • a processor herein may refer to one or more devices, circuits, and/or processing cores for processing, eg, computer data (computer program instructions).
  • the apparatus 60 may further include an output device 605 and an input device 606 .
  • the output device 605 is in communication with the processor 601 and can display information in a variety of ways.
  • the output device 605 may be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector (projector) Wait.
  • Input device 606 is in communication with processor 601 and can receive user input in a variety of ways.
  • the input device 606 may be a mouse, a keyboard, a touch screen device or a sensing device, or the like.
  • the embodiment of the present application further provides a computer-readable storage medium, where an instruction is stored in the computer-readable storage medium, and when the instruction is executed, the method provided by the embodiment of the present application is executed.
  • an instruction is stored in the computer-readable storage medium, and when the instruction is executed, the method provided by the embodiment of the present application is executed.
  • the instruction when the instruction is executed, the operation that needs to be performed by the network device as shown in FIG. 7 or FIG. 12 is performed.
  • other operations that need to be performed by the terminal device as shown in FIG. 7 or FIG. 12 are performed.
  • Embodiments of the present application also provide a computer program product including instructions.
  • the computer can execute the methods provided by the embodiments of the present application.
  • the computer program product containing the instructions when executed on a computer, the computer can perform the operations that the network device as shown in FIG. 7 or FIG. 12 needs to perform.
  • the computer program product containing the instructions runs on the computer, the computer can perform other operations that the terminal device as shown in FIG. 7 or FIG. 12 needs to perform.
  • the embodiment of the present application also provides a chip.
  • the chip includes a processing circuit and an interface; the processing circuit is used to call and run the computer program stored in the storage medium from the storage medium, so that the chip can execute the method provided by the embodiments of the present application.
  • An embodiment of the present application further provides a communication system, including a first communication device and a second communication device; wherein: the first communication device is configured to perform the operations performed by the device for sending a reference signal in the foregoing embodiment; the second communication device , which is used to perform the operations performed by the device for receiving the reference signal in the foregoing embodiment.
  • the first communication device is used to perform the operation that needs to be performed by the terminal device in FIG. 7, or is used to perform the operation performed by the network device in FIG. 12; the second communication device is used to perform the operation that needs to be performed by the network device in FIG. 7, Or used to perform the operations performed by the terminal device in FIG. 12 .
  • the functions or actions or operations or steps in the above embodiments may be implemented in whole or in part by software, hardware, firmware or any combination thereof.
  • a software program When implemented using a software program, it can be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, all or part of the processes or functions described in the embodiments of the present application are generated.
  • the computer may be a general purpose computer, special purpose computer, computer network, or other programmable device.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server, or data center Transmission to another website site, computer, server, or data center by wire (eg, coaxial cable, optical fiber, digital subscriber line, DSL) or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer-readable storage medium can be any available medium that can be accessed by a computer, or data storage devices including one or more servers, data centers, etc. that can be integrated with the medium.
  • the usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVDs), or semiconductor media (eg, solid state disks (SSDs)), and the like.

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  • Computer Networks & Wireless Communication (AREA)
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  • Noise Elimination (AREA)

Abstract

La présente demande relève du domaine technique des communications et concerne un procédé et un dispositif de communication. La présente demande est utilisée pour réduire l'interférence entre des signaux de références de couches différentes. Le procédé comprend : la réception ou l'envoi d'une première signalisation, différentes valeurs de segments de domaine prédéfinis comprises dans la première signalisation correspondant à diverses combinaisons de signaux de référence, respectivement, tous les signaux de référence compris dans les différentes combinaisons de signaux de référence formant un ensemble de signaux de référence, l'ensemble de signaux de référence comprenant au moins deux groupes de signaux de référence, deux groupes de signaux de référence satisfaisant les conditions suivantes : des séquences de codes orthogonaux W(·) de tous les signaux de référence dans le premier groupe de signaux de référence formant un premier groupe de séquences et des séquences de codes orthogonaux W(·) de tous les signaux de référence dans le second groupe de signaux de référence formant un second groupe de séquences, le premier groupe de séquences comprenant au moins deux sous-groupes de séquences, le second groupe de séquences comprenant au moins deux sous-groupes de séquences, et des séquences dans un sous-groupe de séquences dans le premier groupe de séquences étant orthogonales à des séquences dans certains sous-groupes de séquences dans le second groupe de séquences ; et la génération et l'envoi d'au moins un signal de référence.
PCT/CN2020/119759 2020-09-30 2020-09-30 Procédé et dispositif de communication WO2022067826A1 (fr)

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