WO2020143591A1 - Procédé de transmission de signal de référence de démodulation, dispositif terminal et dispositif de réseau - Google Patents

Procédé de transmission de signal de référence de démodulation, dispositif terminal et dispositif de réseau Download PDF

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Publication number
WO2020143591A1
WO2020143591A1 PCT/CN2020/070572 CN2020070572W WO2020143591A1 WO 2020143591 A1 WO2020143591 A1 WO 2020143591A1 CN 2020070572 W CN2020070572 W CN 2020070572W WO 2020143591 A1 WO2020143591 A1 WO 2020143591A1
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Prior art keywords
port
reference signal
demodulation reference
sequence
group
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English (en)
Chinese (zh)
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蒋创新
鲁照华
李儒岳
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ZTE Corp
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ZTE Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03159—Arrangements for removing intersymbol interference operating in the frequency domain
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2614—Peak power aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver

Definitions

  • the present disclosure relates to the field of networks, and in particular, to a method for transmitting demodulation reference signals, terminal equipment, network equipment, communication systems, processing devices, computer-readable storage media, and chips.
  • the sending-end device when performing data transmission, the sending-end device (for example, the terminal device for uplink data transmission and the network device for downlink transmission) needs to send a demodulation reference signal (DMRS) in order for the receiving-end device (
  • DMRS demodulation reference signal
  • uplink data transmission is a network device
  • downlink transmission is a terminal device
  • the DMRS of all channels are inserted in the frequency domain.
  • DMRS is also directly inserted in the frequency domain.
  • the modulation symbol of the data signal is first converted to the frequency domain through Discrete Fourier Transform (Discrete Fourier Transform, DFT) operation for subcarrier mapping.
  • IFFT inverse fast Fourier transform
  • IFFT inverse Fast Fourier transform
  • NR is related to physical uplink shared channel (physical uplink shared channel (physical uplink shared channel (PUSCH) or physical uplink control channel (physical uplink control channel (PUCCH)
  • PUSCH physical uplink shared channel
  • PUCCH physical uplink control channel
  • the modulation method introduces pi/2 binary phase shift keying (Binary Phase Shift Keying, BPSK), the purpose is to further reduce the peak-to-average ratio (peak to average power ratio, PAPR). After the following pi/2 BPSK modulation, the phase difference of every two consecutive modulation symbols is pi/2. After the frequency domain spectrum shaping (FDSS), PAPR will be greatly reduced.
  • BPSK Binary Phase Shift Keying
  • bit string is mapped on the modulation symbol like this:
  • reducing PAPR means that the overhead of the power amplifier can be reduced or the uplink coverage can be increased.
  • the DMRS of PUSCH or PUCCH is directly inserted in the frequency domain, which will cause the PAPR of the DMRS to be higher than the PAPR of the data. In this way, the user's power amplifier must be set according to the worst case, that is, according to the DMRS situation, which will affect the uplink coverage.
  • the DMRS can be redesigned.
  • An intuitive method is to generate DMRS according to the data generation process, that is, DMRS is generated in the time domain, and then do DFT operation to the frequency domain, as shown in Figure 1.
  • DMRS is generated in the time domain, and then do DFT operation to the frequency domain, as shown in Figure 1.
  • how to generate a DMRS sequence in the time domain and obtain multiple orthogonal ports is a problem.
  • the method, terminal device, network device, communication system, processing device, computer-readable storage medium, and chip for transmitting demodulation reference signals provided by the embodiments of the present invention mainly solve the technical problem of providing multiple frequencies through time-domain sequences
  • the mechanism of multiplexing orthogonal DMRS ports and transmitting DMRS The mechanism of multiplexing orthogonal DMRS ports and transmitting DMRS.
  • An embodiment of the present invention provides a method for transmitting a demodulation reference signal, including:
  • M 2 port groups use different orthogonal cover code combinations on each M 2 consecutive sequences in their demodulation reference signal sequences;
  • the length of the demodulation reference signal sequence is the number of frequency domain subcarriers of the scheduling signal M SC sequences.
  • the M 2 is equal to 2 or 4, and the sequence of the M 2 port groups before adding orthogonal cover codes is the same.
  • each port group is further provided with N-level port sub-groups, where N is a positive integer greater than or equal to 1; one port group includes N 1 first-level port sub-groups, and adjacent port sub-groups An upper-level port sub-group includes at least two lower-level port sub-groups, and the lowest-level port sub-group includes N 0 orthogonal ports, N 1 is a positive integer greater than or equal to 2, and N 0 is a positive integer greater than or equal to 1 Integer; divide the demodulation reference signal sequence into N 1 sequence subgroups, and apply orthogonal cover code combination to the N 1 sequence subgroups, different first-level port subgroups within a port group Different orthogonal cover code combinations are applied to N 1 sequence subgroups; the sequence and orthogonal cover code combinations corresponding to other subordinate port subgroups and ports and so on.
  • N 0 is a positive integer equal to 2
  • the sequence of N 0 ports included in the lowest-level port subgroup on two consecutive time-domain symbols is the same, and the orthogonal cover codes used The combination is different.
  • ports 0 and 2 are assigned to port group 0, ports 1 and 3 are assigned to port group 1, and ports 0-3 correspond to the first Sub-group 0-3 of port level;
  • the combination of orthogonal cover codes used by port group 0 on two consecutive sequences is [1 1]
  • the combination of orthogonal cover codes used by port group 1 on two consecutive sequences is [ 1 -1];
  • the two sequence subgroups combined using the orthogonal cover codes corresponding to port 0 are the same, and the two sequence subgroups combined using the orthogonal cover codes corresponding to port 2 are opposite;
  • the two sequence subgroups combined using the orthogonal cover codes corresponding to port 1 are the same, and the two sequence subgroups using the combined orthogonal cover codes corresponding to port 3 are opposite.
  • N when N equals 1, N 0 equals 2, and M 2 equals 2, ports 0, 2, 4, 6 belong to port group 0, and ports 1, 3, 5, 7 belong to port group 1, port 0 and 4 belong to the first-level port subgroup 0, ports 2 and 6 belong to the first-level port subgroup 1, ports 1 and 5 belong to the first-level port subgroup 2, and ports 3 and 7 belong to the first-level port subgroup 3 ;
  • the orthogonal cover code combination used by port group 0 on every two consecutive sequences is [1 1]
  • the orthogonal cover code combination used by port group 1 on every two consecutive sequences is [1 -1]
  • the orthogonal cover codes used by the first-level port subgroups 0 and 2 on two identical sequence subgroups are [1 1]
  • the first-level port subgroups 1 and 3 are used on two identical sequence subgroups
  • the orthogonal cover code combination is [1 -1];
  • the M 2 is equal to 2, and the sequence of each port before adding orthogonal cover codes is the same.
  • An embodiment of the present invention also provides a network device, including a receiving module and a processing module;
  • the receiving module is used to obtain a demodulation reference signal; the demodulation reference signal is obtained in the following manner:
  • the 2 X orthogonal ports required for the demodulation reference signal are divided into M 2 port groups, and the number of orthogonal ports in each port group is the same;
  • X is a positive integer greater than or equal to 2, and M 2 is equal to 2 or 4;
  • M 2 port groups use different orthogonal cover code combinations on each M 2 consecutive sequences in their demodulation reference signal sequences;
  • the processing module is configured to perform demapping processing on the demodulation reference signal acquired by the receiving module.
  • An embodiment of the present invention also provides a terminal device, including a generating module and a sending module;
  • the generating module is configured to generate a demodulation reference signal in the following manner:
  • M 2 port groups use different orthogonal cover code combinations on every M 2 consecutive sequences in their demodulation reference signal sequences.
  • the sending module is configured to send the demodulation reference signal generated by the generating module.
  • An embodiment of the present invention further provides a communication system, including the foregoing network device and the foregoing terminal device.
  • An embodiment of the present invention further provides a processing device, where the processing device includes at least one circuit, and the at least one circuit is configured to perform the foregoing method for transmitting a demodulation reference signal.
  • An embodiment of the present invention further provides a computer-readable storage medium, in which instructions are stored, and when the instructions run on a processing component of a computer, the processing component is caused to perform the above-mentioned transmission demodulation reference Signal method.
  • An embodiment of the present invention further provides a chip, which includes a programmable logic circuit and/or program instructions, and is used to implement the above method for transmitting the demodulation reference signal when the chip is running.
  • this method can reduce the time when the DMRS is directly inserted in the frequency domain.
  • the PAPR of the DMRS is basically the same as the PAPR of the data, and will not be significantly higher than the PAPR of the data.
  • Figure 1 is a schematic diagram of the transmission process of data modulation symbols under a single carrier
  • FIG. 2 is a schematic diagram of the mapping of the DMRS sequence from the time domain to the frequency domain in Embodiment 1 of the present invention
  • FIG. 3 is a configuration diagram of a 4-port DMRS sequence in Embodiment 1 of the present invention.
  • FIG. 4 is a configuration diagram of an 8-port DMRS sequence in Embodiment 1 of the present invention.
  • This embodiment is described by taking the DMRS of the upstream PUSCH as an example.
  • the PAPR of the DMRS is higher than the PAPR of the data.
  • DMRS needs to be redesigned. Similar to the data, the specific process is to generate the DMRS sequence of the present disclosure in the time domain, that is, before the DFT operation, and then perform the DFT operation, that is, convert to the frequency domain, map to the subcarrier, and then do IFFT conversion to Time Domain.
  • the DMRS sequence length of the present disclosure is related to the number of scheduled PUSCH or PUCCH subcarriers ( or ) The same, or equal to the number of physical resource blocks (PRB) of the scheduled PUSCH or PUCCH ( or ) Times among them, Refers to the number of subcarriers contained in a PRB, which is generally equal to 12.
  • PRB physical resource blocks
  • DMRS of the uplink PUSCH a maximum of 8 DMRS ports are supported, and each user is assigned a maximum of 1 port in a single carrier, which can support uplink multi-user scheduling of 8 orthogonal ports.
  • the new DMRS sequence is redesigned, the length generated in the time domain is The DMRS sequence needs to be specially designed to achieve 8 orthogonal ports.
  • the DMRS sequence is equally divided into N 1 copies. Starting from the 0th sequence, consecutive adjacent Each sequence is a copy. When N 1 is equal to 2, the first half of the sequence is represented as R1, and the second half of the sequence is represented as R2. As follows:
  • NR currently supports 4 orthogonal ports on one time domain symbol.
  • the above length can be After dividing the DMRS sequence into N 1 copies, each of the N 1 copies is further divided into N 2 copies. In every N 1 sequence, starting from the 0th sequence, consecutive adjacent This sequence is one of N 2 copies.
  • the orthogonal cover codes (OCC) applied to consecutive M 2 sequences are different, and the length of the OCC is equal to M 2 .
  • M 2 2
  • the two DMRS ports can be configured with different OCCs as [1 1] and [1 -1], respectively.
  • the basic sequence in each of the N 2 copies of DMRS ports 0, 1 is the same, but the OCC codes used are different.
  • the basic sequence refers to r(0), r(1)..., not including the OCC sign in front of the sequence.
  • port 0, 1 and port 2, 3 use different OCC codes for every N 1 copies
  • port 0, 1 is [R1 R1]
  • port 2, 3 is [R1-R1]
  • R1 contains the length Is a sequence of 6. That is, at this time, the DMRS ports are divided into N 1 port groups, and different port groups use different OCC codes on each N 1 sequence.
  • ports 0 and 1 belong to port group #0
  • ports 2 and 3 belong to port group #1.
  • the port group #0 is divided into 2 subgroups.
  • the subgroup #0 is port 0, and the subgroup #1 is port 1, and the continuous two sequences of port 0 and port 1 on every N 2 copies
  • the OCC codes used are different.
  • port 0 uses OCC code [1 1]
  • port 1 uses OCC code [1 -1], that is, when port 0 is on a certain N 2 copies, it is [r(i)r(i+1 )]
  • port 1 is [r(i)-r(i+1)].
  • the DMRS ports can be obtained.
  • the length of the first DMRS time domain symbol can be generated as DMRS sequence, denoted as R, then the DMRS sequence on the second DMRS time domain symbol is also R.
  • the DMRS ports are divided into N 1 port groups, and the length on each time domain symbol is The sequence R is divided into N 1 parts.
  • 8 DMRS port groups can be divided into 2 port groups, port group #0 contains DMRS ports 0, 1, 4, 5; port group #1 contains DMRS ports 2, 3, 6, 7;
  • the group is divided into 2 first-level port subgroups, port group #0 contains first-level port subgroups #0, #1, first-level port subgroup #0 contains ports 0, 1, and first-level port subgroups #1 contains ports 4, 5; port group #1 contains first-level port subgroups #2, #3, first-level port sub-group #2 contains ports 2, 3, and first-level port sub-group #3 contains ports 6, 7; each first-level port sub-group contains 2 second-level port sub-groups, and the first-level port sub-group #0 contains second-level port sub-groups #0, #1, which corresponds to ports 0, 1,
  • the first-level port sub-group #1 contains second-level port sub-groups #4, #5, which corresponds to ports 4, 5; the first-level port sub-group #2 contains second-level port sub-groups #2, #3, That is, corresponding to ports 2,
  • the length is DMRS sequence
  • R N 1 is divided into parts, the port group # 0 (port 0,1,4,5) and the port group # 1 (port 2,3,6,7) 2 parts of each symbol sequences respectively Use OCC codes [1 1] and [1 -1], and before And after
  • the basic sequence is the same.
  • the first-level port subgroups #0 and #1 in port group #0 use OCC codes on different Orthogonal Frequency Division Multiplexing (OFDM) symbols to achieve orthogonality.
  • OFDM Orthogonal Frequency Division Multiplexing
  • ports 0 and 1 use different OCC codes, as shown in FIG. 4.
  • the above basic sequence may be a DMRS sequence without adding an OCC code.
  • the sequence on the 2 DMRS symbols is [R R], so
  • Equation 1 Based on Equation 1, a maximum of 8 PUSCH DMRS ports can be obtained. However, after inserting the DMRS from the time domain and then performing the DFT operation, the orthogonality may be affected. Therefore, it can be considered to support only 4 orthogonal ports. For example do not consider or
  • the uplink PUSCH is pi/2 BPSK modulation
  • the DMRS can be generated in the time domain, and then the DFT operation is performed to the frequency domain, the DMRS sequence is generated in the time domain and multiple orthogonal ports are obtained. Reduced PAPR of DMRS.
  • the OCC applied in each M 2 consecutive sequences is different.
  • the length of is equal to M 2 .
  • the two DMRS port groups can be configured with different OCC codes, namely [1 1] and [1 -1].
  • the supported orthogonal DMRS ports can be divided into 2 port groups, port group #0 and port group #1.
  • port group #0 includes ports 0,2, and OCC code [1 1] is used on two adjacent sequences;
  • port group #1 includes For ports 1, 3, use OCC codes [1 -1] on two adjacent sequences, as shown in Figure 3.
  • port group #0 includes ports 0, 2, 4, 6, use OCC codes [1 1] on each adjacent 2 sequences;
  • Port group #1 includes ports 1, 3, 5, and 7, and uses OCC codes [1 -1] on every two adjacent sequences. Since the channel responses of adjacent M 2 channel sampling points in the time domain are usually very close, using OCC on the adjacent M 2 channel sampling points will achieve a good orthogonal effect.
  • port group #0 is divided into port subgroups #0 and #1, port subgroup #0 contains port 0; port subgroup #1 contains port 2.
  • the OCC code applied by port 0 to the two sequence subgroups of length M 1 is [1 1], that is, the first half sequence and the second half sequence are the same; port 2 is applied to the two sequence subgroups of length M 1
  • the OCC code is [1 -1], that is, the first half sequence is opposite to the second half sequence.
  • port group #1 is divided into port subgroups #2 and #3. Port subgroup #2 contains port 1; port subgroup #3 contains port 3.
  • the OCC code applied by port 1 to the two sequence subgroups of length M 1 is [1 1], that is, the first half sequence and the second half sequence are the same; port 3 is applied to the two sequence subgroups of length M 1
  • the OCC code is [1 -1], that is, the first half sequence is opposite to the second half sequence.
  • port group #0 is divided into port subgroups #0 and #1, port subgroup #0 contains ports 0, 4; port subgroup #1 contains ports 2, 6.
  • the OCC code applied to the two sequence subgroups of length M 1 by ports 0 and 4 is [1 1], that is, the first half sequence and the second half sequence are the same; port 2, 6 are the two sequence subs of length M 1
  • the OCC code applied on the group is [1 -1], that is, the first half sequence is opposite to the second half sequence.
  • port group #1 is divided into port subgroups #2 and #3, port subgroup #2 contains ports 1, 5; port subgroup #3 contains ports 3, 7.
  • the OCC code applied to the two sequence subgroups of length M 1 for ports 1, 5 is [1 1], that is, the first half sequence and the second half sequence are the same; port 3, 7 are for the two sequence subs of length M 1
  • the OCC code applied on the group is [1 -1], that is, the first half sequence is opposite to the second half sequence.
  • each port subgroup of DMRS is further divided into N3 second-level port subgroups.
  • the sequences including the OCC codes of two ports in a port subgroup in two time domains are represented as [R R] and [R -R], respectively.
  • port 0 uses OCC code [1] on two consecutive time-domain symbols
  • port 4 uses OCC code [1]-1 on two consecutive time-domain symbols
  • port 1 uses OCC code [1] on two consecutive time-domain symbols
  • port 5 uses OCC code [1]-1 on two consecutive time domain symbols
  • port subgroup #3 Inside, port 3 uses OCC code [1] on two consecutive time-domain symbols, and port 7 uses OCC code [1] on two consecutive time-domain symbols.
  • the summation operation is to do the DFT operation. It can be seen that the new DMRS sequence was inserted before the DFT.
  • k represents the index of the subcarrier in the frequency domain resource scheduled;
  • l represents the relevant information of the time domain symbol.
  • the basic sequence of the DMRS excluding the OCC sequence is denoted by r l , and may be different with different time slots or time-domain symbols.
  • the OCC code on every 2 consecutive sequences uses [1 1], so
  • the ports in DMRS port group #1 namely port 1, 3, 5, 7, in other words, It indicates the value of the OCC code used by the ports on the port group on every M 2 consecutive sequences.
  • the sequence on the 2 DMRS symbols is [R R], so
  • the first step is to obtain two orthogonal ports, that is, OCC codes [1] and [1]-1 are used on each adjacent two sequence points, as follows,
  • the second step is to divide the entire sequence into 2 subgroups, that is, two parts, the first half and the second half are the same or opposite, that is, the entire sequence is expressed as [R]R[R-R], so that the two two are orthogonal
  • the port is available.
  • the OCC code [1]1 or [1-1] is applied to the two parts, and the basic sequence of the two parts is the same, as follows:
  • the OCC code can be applied to the two time-domain symbols, that is, the sequences on the two time-domain symbols are [R1, R1] and [R1, R1, respectively. ], or [R1 R1] and-[R1 R1], as follows:
  • the length will be The sequence of is divided into two parts, and the basic sequence of the two parts (before adding OCC) is the same, both are of length Sequence (after pi/2 BPSK modulation). Then apply the OCC code to the two parts before and after, every 2 consecutive sequences (such as r(0), r(1)), or two time domain symbols. Therefore, the OCC code can be applied on three levels, the first is every two adjacent sequences, the second is two parts before and after, and the third is two time domain symbols. In this way, a maximum of 8 orthogonal ports can be formed, and the OCC codes applied on these three layers by different ports can be different, as shown in Table 1 below. Of course, if only one DMRS time-domain symbol is configured, then the OCC code is only applied to the first two levels.
  • Table 1 OCC codes are applied on three levels to form up to 8 ports
  • this method of inserting DMRS before DFT calculation is only used for the DFT-S-OFDM wave form.
  • the UE often sends only one sequence corresponding to a DMRS port, and the port serial number is assigned by the base station. .
  • the base station usually needs to perform corresponding Inverse Discrete Fourier Transform (IDFT) processing during reception processing.
  • IDFT Inverse Discrete Fourier Transform
  • This embodiment is described by taking the DMRS of the PUCCH as an example.
  • the PUCCH design of NR is different from that of PUSCH.
  • the DMRS design of R15 PUCCH does not consider the orthogonality between time-domain symbols, so the sequence designed before DFT can ignore the OCC code between two time-domain symbols. That is, there is no need to consider in formula (1)
  • p can be configured as 0 or 1, corresponding to Or [1 -1].
  • an orthogonal OCC code with a multiplexing factor of 4 may have complex numbers, as long as it is 4 orthogonal codes with a length of 4, for example
  • the uplink PUCCH is pi/2 BPSK modulation
  • the DMRS can be generated in the time domain, and then the DFT operation is performed to the frequency domain, the DMRS sequence is generated in the time domain and multiple orthogonal ports are obtained. Reduced PAPR of DMRS.
  • This embodiment discloses a method for transmitting a demodulation reference signal, including the following processing steps:
  • the 2 X orthogonal ports required for demodulation of the reference signal are divided into M 2 port groups, the number of orthogonal ports in each port group is the same; X is a positive integer greater than or equal to 2, M 2 is equal to 2 or 4.
  • M 2 port groups use different orthogonal cover code combinations on every M 2 consecutive sequences in their demodulation reference signal sequences.
  • the length of the demodulation reference signal sequence in the above step S2 is the number of frequency domain subcarriers of the scheduling signal M SC sequences.
  • the M 2 is equal to 2, and the sequence of each port before adding orthogonal cover codes is the same.
  • the M 2 is equal to 2 or 4, and the sequence of the M 2 port groups before adding orthogonal cover codes is the same.
  • each port group also has N-level port subgroups, where N is a positive integer greater than or equal to 1; a port group includes N 1 first-level port subgroups, adjacent level ports An upper-level port sub-group in the sub-group includes at least two lower-level port sub-groups, the lowest-level port sub-group includes N 0 orthogonal ports, N 1 is a positive integer greater than or equal to 2, and N 0 is greater than or equal to A positive integer of 1; divide the demodulation reference signal sequence into N 1 sequence subgroups, and apply orthogonal cover code combinations to the N 1 sequence subgroups, different first-level ports in a port group The subgroup applies different orthogonal cover code combinations on the N 1 sequence subgroups; the sequence and orthogonal cover code combinations corresponding to other subordinate port subgroups and ports and so on.
  • the two ports included in the lowest-level port sub-group have the same sequence on two consecutive time-domain symbols, and use different combinations of orthogonal cover codes.
  • port 0 and 2 are assigned to port group 0, port 1 and 3 are assigned to port group 1, and ports 0-3 correspond to the first-level port subgroups 0-3;
  • the orthogonal cover code combination used by port group 0 on two consecutive sequences is [1 1]
  • the orthogonal cover code combination used by port group 1 on two consecutive sequences is [1 -1] ;
  • the two sequence subgroups after the combination of the orthogonal cover codes corresponding to port 0 are the same, and the two sequence subgroups after the combination of the orthogonal cover codes corresponding to port 2 are opposite; in port group 1
  • the two sequence subgroups after the combination of the used orthogonal cover codes corresponding to port 1 are the same, and the two sequence subgroups after the combination of the used orthogonal cover codes corresponding to port 3 are opposite.
  • the M 2 is equal to 2, and the sequence of each port before adding orthogonal cover codes is the same.
  • This embodiment also provides a network device, including a receiving module and a processing module;
  • the receiving module is used to obtain a demodulation reference signal; the demodulation reference signal is obtained in the following manner:
  • the 2 X orthogonal ports required for the demodulation reference signal are divided into M 2 port groups, the number of orthogonal ports in each port group is the same; X is a positive integer greater than or equal to 2, M 2 is equal to 2 Or 4;
  • M 2 port groups use different orthogonal cover code combinations on each M 2 consecutive sequences in their demodulation reference signal sequences;
  • the processing module is used for demapping the demodulation reference signal acquired by the receiving module.
  • This embodiment also provides a terminal device, including a generating module and a sending module;
  • the generation module is used to generate the demodulation reference signal in the following ways:
  • M 2 port groups use different orthogonal cover code combinations on every M 2 consecutive sequences in their demodulation reference signal sequences.
  • a sending module configured to send the demodulation reference signal generated by the generating module.
  • This embodiment also provides a communication system, including the network device and the terminal device described above.
  • the terminal equipment may be various UEs, and the network equipment may be base stations and the like.
  • This embodiment also provides a processing device, including at least one circuit, where the at least one circuit is used to execute the method in the embodiment.
  • This embodiment also provides a computer-readable storage medium in which instructions are stored. When the instructions run on a processing component of a computer, the processing component is caused to execute the method in the embodiment.
  • This embodiment also provides a chip including programmable logic circuits and/or program instructions, which are used in the method in the embodiment when the chip is running.
  • Such software may be distributed on a computer-readable medium, executed by a computing device, and in some cases, the steps shown or described may be performed in a different order than the computer-readable medium may include computer storage Media (or non-transitory media) and communication media (or transitory media).
  • computer storage media includes both volatile and nonvolatile implemented in any method or technology for storing information such as computer readable instructions, data structures, program modules, or other data Sex, removable and non-removable media.
  • Computer storage media include but are not limited to Random Access Memory (RAM), Read-Only Memory (ROM), Electrically Erasable Read-Only Memory (Electrically Programmable Read-Only Memory, EEPROM), Flash Memory Or other memory technologies, portable compact disk read-only memory (Compact Disc Read Only Memory, CD-ROM), digital versatile disk (Digital Video Disk, DVD) or other optical disk storage, magnetic box, magnetic tape, magnetic disk storage or other magnetic storage A device, or any other medium that can be used to store desired information and can be accessed by a computer.
  • RAM Random Access Memory
  • ROM Read-Only Memory
  • EEPROM Electrically Erasable Read-Only Memory
  • Flash Memory Flash Memory
  • portable compact disk read-only memory Compact Disc Read Only Memory
  • CD-ROM Compact Disc Read Only Memory
  • DVD Digital Video Disk
  • magnetic box magnetic tape
  • magnetic disk storage magnetic disk storage
  • a device or any other medium that can be used to store desired information and can be accessed by a computer.
  • the communication medium generally contains computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transmission mechanism, and may include any information delivery medium . Therefore, the present disclosure is not limited to any specific combination of hardware and software.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

Des modes de réalisation de la présente invention concernent un procédé de transmission d'un signal de référence de démodulation, un dispositif de terminal, un dispositif de réseau, un système de communication, un dispositif de traitement, un support de stockage lisible par ordinateur et une puce.
PCT/CN2020/070572 2019-01-07 2020-01-07 Procédé de transmission de signal de référence de démodulation, dispositif terminal et dispositif de réseau Ceased WO2020143591A1 (fr)

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