CN111107032A - Reference signal generation method, terminal equipment and network side equipment - Google Patents
Reference signal generation method, terminal equipment and network side equipment Download PDFInfo
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- 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
- H04L27/262—Reduction thereof by selection of pilot symbols
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
- H04L27/2613—Structure of the reference signals
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- H—ELECTRICITY
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- 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
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Abstract
The invention discloses a method for generating a reference signal, which comprises the following steps: according to the indication information, sequentially carrying out target modulation and discrete Fourier transform modulation on the target sequence to generate a target reference signal; wherein the length of the target sequence is 8 or 16; the indication information is used for indicating whether the sending end equipment adopts target reference signal transmission. The embodiment of the invention can improve the power amplification efficiency of the sending end equipment, reduce the power consumption of the sending end equipment, improve the demodulation performance of the receiving end equipment and ensure the coverage area.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a method for generating a reference signal, a terminal device, and a network side device.
Background
Currently, in an NR (New Radio, New air interface) mobile communication system (abbreviated as an NR system), a reference signal provided by a transmitting device to a receiving device for channel estimation or channel sounding is generally generated by a PN (Pseudo-Noise) sequence or a ZC (Zadoff-Chu) sequence.
However, when transmission precoding is employed and a reference signal is generated by a PN sequence or a ZC sequence with a low PAPR (Peak to Average Power Ratio), the PAPR of the generated reference signal symbol is higher than the PAPR of the data symbol. This may cause an increase in power consumption of the transmitting end device and a decrease in power amplifier efficiency, thereby affecting a coverage and decreasing demodulation performance of the receiving end device.
Therefore, a method for generating a reference signal is needed to improve or solve the problem caused by the high PAPR of the reference signal symbols when the traffic channel or the control channel adopts transmission precoding.
Disclosure of Invention
The embodiment of the invention aims to provide a reference signal generation method, terminal equipment and network side equipment, so as to improve the power amplification efficiency of sending end equipment, reduce the power consumption of the sending end equipment, improve the demodulation performance of receiving end equipment and guarantee the coverage area.
In a first aspect, an embodiment of the present invention provides a method for generating a reference signal, where the method includes:
according to the indication information, sequentially carrying out target modulation and discrete Fourier transform modulation on the target sequence to generate a target reference signal;
wherein the length of the target sequence is 8 or 16; the indication information is used for indicating whether the sending end equipment adopts the target reference signal transmission.
In a second aspect, an embodiment of the present invention provides a terminal device, where the terminal device includes:
the generating module is used for sequentially carrying out target modulation and discrete Fourier transform modulation on the target sequence according to the indication information to generate a target reference signal;
wherein the length of the target sequence is 8 or 16; the indication information is used for indicating whether the sending end equipment adopts the target reference signal transmission.
In a third aspect, an embodiment of the present invention provides a terminal device, including: a memory, a processor and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method according to the first aspect.
In a fourth aspect, an embodiment of the present invention provides a network-side device, where the network-side device includes:
the generating module is used for sequentially carrying out target modulation and discrete Fourier transform modulation on the target sequence according to the indication information to generate a target reference signal;
wherein the length of the target sequence is 8 or 16; the indication information is used for indicating whether the sending end equipment adopts the target reference signal transmission.
In a fifth aspect, an embodiment of the present invention provides a network side device, including: a memory, a processor and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method according to the first aspect.
In a sixth aspect, the present invention provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements the steps of the method according to the first aspect.
In the embodiment of the invention, when the target reference signal transmission is adopted is known according to the indication information for indicating whether the sending terminal equipment adopts the target reference signal transmission, the target sequence is selected, the PAPR of the reference signal symbol generated based on the target sequence can be reduced, namely, the problem caused by the fact that the PAPR of the reference signal symbol is higher than that of the data symbol when a service channel or a control channel adopts transmission precoding can be properly improved or solved by reducing the PAPR of the reference signal symbol; specifically, according to the indication information, the target sequence is sequentially subjected to target modulation and discrete fourier transform modulation to generate a corresponding target reference signal, wherein the length of the target sequence is 8 or 16. Therefore, the effects of improving the power amplifier efficiency of the sending end equipment, reducing the power consumption of the sending end equipment, improving the demodulation performance of the receiving end equipment and ensuring the coverage range can be achieved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a flowchart illustrating a method for generating a reference signal according to an embodiment of the present invention;
FIG. 2 is a mapping diagram of a target reference signal according to an embodiment of the present invention;
FIG. 3 is a diagram illustrating another mapping of a target reference signal according to an embodiment of the invention;
fig. 4 is a schematic structural diagram of a terminal device in an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a network-side device in an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a second terminal device in the embodiment of the present invention;
fig. 7 is a schematic structural diagram of a second network-side device in the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the related art, a transmitting end device is used as a terminal device, a receiving end device is used as a network device, and a Reference signal is used as a demodulation Reference signal DMRS (demodulation Reference signal), and specifically, for a PUSCH (Physical Uplink Shared Channel) or a PUCCH (Physical Uplink control Channel), when transmission precoding is adopted, the DMRS is generated by a PN sequence or a ZC sequence with a low PAPR.
When transmission precoding is adopted for the PUSCH, the DMRS sequence generation mode is as follows:
where n denotes an index of DMRS symbol, α ═ 0, δ ═ 1,
and u and v respectively correspond to the PUSCH group frequency hopping sequence number and the sequence frequency hopping sequence number.
When transmission precoding is adopted for the PUCCH, the DMRS sequence generation mode is as follows:
where n denotes an index of DMRS symbol, α ═ 0, δ ═ 1,
the number of subcarriers occupied by PUCCH is indicated, s is 3, and 4 indicates PUCCH format 3 and format 4, respectively.
In the above two expressions, sequences
Namely, a DMRS sequence generated by a low PAPR sequence.
Is obtained by aligning base sequences
Performing cyclic shift α results in the following:
wherein the content of the first and second substances,
indicating the length of the sequence, in the NR system,
the number of subcarriers per RB (Resource Block) is represented by α and δ, which have different values, a plurality of sequences can be obtained.
Base sequence
The groups are divided by a parameter u e {0, 1...., 29}, and different base sequences within the groups are distinguished by a parameter v. And base sequence
Is defined in dependence on the sequence length MZCThe following are:
when in use
Time, base sequence
The definition is as follows:
wherein the content of the first and second substances,
NZCis less than MZCThe maximum prime number of.
When M isZC30 th, base sequence
The definition is as follows:
when M isZCE {6,12,18,24}, a base sequence
The definition is as follows:
wherein the content of the first and second substances,
the resulting sequence is searched by a computer.
In the above-mentioned content in the related art, when the PUSCH or PUCCH employs transmission precoding, the DMRS sequence is generated by a low PAPR sequence, and there are problems that the PAPR of the generated DMRS symbol is higher than the PAPR of the data symbol, which affects the uplink coverage and reduces the demodulation performance of the receiving end device.
User Equipment (UE), which may also be referred to as Terminal Equipment (Mobile Terminal), Mobile User Equipment (ms), and the like, may communicate with one or more core networks through a Radio Access Network (RAN, Radio Access Network, for example), and the UE may be Terminal Equipment, such as a Mobile phone (or a "cellular" phone) and a computer having the Terminal Equipment, such as a portable, pocket, handheld, computer-embedded, or vehicle-mounted Mobile device, which exchange language and/or data with the Radio Access Network; and the network side device may be a 5G base station (gNB), which may have a plurality of centralized or distributed TRPs.
The technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Referring to fig. 1, an embodiment of the present invention provides a method for generating a reference signal, which is applied to a terminal device or a network side device. The method comprises the following steps:
step 101: according to the indication information, sequentially carrying out target modulation and discrete Fourier transform modulation on the target sequence to generate a target reference signal;
wherein the length of the target sequence is 8 or 16; the indication information is used for indicating whether the sending end equipment adopts target reference signal transmission.
In the embodiment of the invention, when the target reference signal transmission is adopted is known according to the indication information for indicating whether the sending terminal equipment adopts the target reference signal transmission, the target sequence is selected, the PAPR of the reference signal symbol generated based on the target sequence can be reduced, namely, the problem caused by the fact that the PAPR of the reference signal symbol is higher than that of the data symbol when a service channel or a control channel adopts transmission precoding can be properly improved or solved by reducing the PAPR of the reference signal symbol; specifically, according to the indication information, the target sequence is sequentially subjected to target modulation and discrete fourier transform modulation to generate a corresponding target reference signal, wherein the length of the target sequence is 8 or 16. Therefore, the effects of improving the power amplifier efficiency of the sending end equipment, reducing the power consumption of the sending end equipment, improving the demodulation performance of the receiving end equipment and ensuring the coverage range can be achieved.
Optionally, in the method for generating a reference signal according to the embodiment of the present invention, the target modulation includes at least one of pi/2-binary Phase Shift keying bpsk (binary Phase Shift keying) modulation, quadrature Phase Shift keying qpsk (quadrature Phase Shift keying) modulation, and 8-Phase Shift keying psk (Phase Shift keying) modulation.
It can be understood that, for target sequences with different sequence lengths, different modulation modes can be adapted to perform accurate modulation, so as to stably generate the target reference signal.
Optionally, the target sequence belongs to a target computer generated sequence cgs (computer generated sequence) set selected from an initial sequence set consisting of all possible sequences determined based on the target sequence length and the target modulation mode; further, the sequences in the target CGS set satisfy a target criterion, i.e., the target sequence satisfies the target criterion, such that the target reference signal symbols generated based on the target sequence have a low PAPR. When the target sequence is selected from the initial sequence set, the initial sequence set can be traversed according to the target criterion to screen out CGS meeting the target criterion to form a target CGS set, and then the target sequence for generating the target reference signal is selected from the target CGS set.
The target criterion is determined based on at least one of a shift autocorrelation mean of the sequence symbols, a cross-correlation mean between the sequence symbols, a time domain symbol peak-to-average ratio (PAPR) corresponding to the sequence symbols, and a block error rate (BLER) (Block error Rate) of a reference signal sequence corresponding to the sequence.
Optionally, in the method for generating a reference signal according to the embodiment of the present invention, the target criterion includes at least one of:
the maximum value of the shift autocorrelation mean values of the sequence symbols in the set is less than or equal to a shift autocorrelation mean threshold value, and the shift autocorrelation mean threshold value is the minimum value of the shift autocorrelation mean values of the sequence symbols in the residual set;
the maximum value in the cross-correlation mean values among the sequence symbols in the set is smaller than or equal to a cross-correlation mean threshold value, and the cross-correlation mean threshold value is the minimum value in the cross-correlation mean values among the sequence symbols in the residual set;
the maximum value of the PAPR of the time domain symbols corresponding to the sequence symbols in the set is smaller than or equal to the PAPR threshold of the time domain symbols, and the PAPR threshold of the time domain symbols is the minimum value of the PAPRs of the time domain symbols corresponding to the sequence symbols in the residual set; and
the maximum value in the BLER of the reference signal sequence corresponding to the sequence in the set is less than or equal to a BLER threshold value, and the BLER threshold value is the minimum value in the BLER of the reference signal sequence corresponding to the sequence in the residual set;
and the residual set is the complement of the target CGS set in the initial sequence set.
It will be appreciated that the partial sequences selected from the initial sequence set satisfy the above target criteria, i.e. satisfy one of the following conditions: the sequences in the target CGS set are the partial sequences with relatively small shift autocorrelation mean values of the sequence symbols in the initial sequence set; the sequences in the target CGS set are partial sequences with relatively small cross-correlation mean values among the sequence symbols in the initial sequence set; the sequence in the target CGS set is a part of sequence with relatively small PAPR of the time domain symbol corresponding to the sequence symbol in the initial sequence set; the sequences in the target CGS set are those portions of the initial sequence set that have a relatively small BLER of the reference signal sequence corresponding to the sequences. In this way, by using a sequence with a low value of at least one of the shifted autocorrelation mean of the sequence symbols, the cross-correlation mean between the sequence symbols, the PAPR of the time domain symbol corresponding to the sequence symbols, and the BLER of the reference signal sequence corresponding to the sequence as the target sequence for generating the target reference signal, the problem of a higher PAPR of the reference signal symbol than the PAPR of the data symbol can be improved or solved.
And the time domain symbol corresponding to the sequence symbol is obtained by performing inverse Fourier transform (IFFT) on the sequence symbol.
Optionally, the target reference signal includes a physical reference demodulation signal or a channel state information acquisition reference signal.
The physical reference signal demodulation signal may include at least: pusch hdmrs, PDSCH (Physical downlink Shared Channel) DMRS, pucchmrs, PDCCH (Physical downlink Control Channel) DMRS, PBCH (Physical Broadcast Channel) DMRS, and PSCCH (Physical Sidelink Shared Channel) DMRS, PSCCH (Physical Sidelink Control Channel) DMRS, PSBCH (Physical Sidelink Broadcast Channel) DMRS, and DMRS.
The channel state information acquisition reference information may include at least: SRS (Sounding Reference Signal) and CSI-RS (CSI Reference Signal, CSI (Channel State Information) Reference Signal).
It should be noted that the target reference signals are distinguished according to different execution main bodies of the reference signal generation method, that is, different sending end devices, that is, different corresponding target reference signals of the sending end devices are distinguished, and specifically, the sending end device may include a terminal device or a network side device.
Optionally, in a case that the sending end device is a terminal device, the indication information may be received from a network device; and in case that the sending end device is a network side device, the indication information may be obtained based on a high layer signaling.
Optionally, in the method for generating a reference signal according to the embodiment of the present invention, when the lengths of the target sequences are different and the target modulation modes are different, the selected target sequences are also different, so that the method for generating a reference signal can be applied to various scenarios.
In an embodiment of the present invention, if the length of the target sequence is 8 and the target modulation is QPSK modulation, the target sequence includes at least one of the following sequences:
{-3,1,1,-3,1,-3,1,-3}；{-3,1,1,-1,3,-1,3,-3}；{-1,1,-1,-1,1,-3,3,-3}；
{-1,3,-3,1,-1,3,1,-3}；{1,-3,-3,-1,3,-1,3,1}；{1,-3,3,1,3,-1,-3,1}；
{1,-1,-3,-1,-3,-1,-3,3}；{1,-1,1,-3,3,-1,-1,1}；{1,3,-3,-1,-3,1,3,3}；
{1,3,-3,1,-1,1,3,3}；{1,3,-3,3,-1,1,-1,-3}；{1,3,-1,-3,3,-3,3,-3}；
{1,3,-1,1,1,3,3,-3}；{3,-3,-3,1,-1,3,-3,3}；{3,-3,-3,3,1,3,1,1}；
{3,-3,-1,1,-1,-3,3,1}；{3,-3,-1,1,-1,1,-1,1}；{3,-3,1,-1,-3,-1,-3,1}；
{3,-3,3,1,3,1,-1,1}；{3,-1,-3,3,-3,1,-1,1}；{3,1,-1,-3,-1,-1,1,-3}；
{3,1,-1,-3,1,-3,1,3}；{3,1,-1,-1,1,-1,1,-3}；{3,1,-1,1,3,1,3,-3}；
{3,1,-1,1,3,3,-3,3}；{3,1,-1,3,-3,-3,-1,-3}；{3,1,-1,3,-3,3,-3,-3}；
{3,1,1,3,-3,3,-1,1}；{3,1,3,1,-1,1,-1,1}；{3,3,-3,1,-1,3,-3,-3}。
preferably, the target sequence includes 30 sequences.
Alternatively, the target sequence may be represented as shown in table 1 below, and table 1 also shows an example of the shifted autocorrelation mean, the cross correlation mean, the PAPR, and the BLER corresponding to each target sequence in this specific embodiment.
TABLE 1
Preferably, a value interval of the shifted autocorrelation mean of the sequence symbol is [0, 0.2], a value interval of the cross-correlation mean between the sequence symbols is [0, 0.5], a value interval of the PAPR of the time domain symbol corresponding to the sequence symbol is [0, 2.5] (unit: dB), and a value interval of the BLER of the reference signal sequence corresponding to the sequence is [0, 0.16 ].
In another embodiment of the present invention, if the length of the target sequence is 16 and the target modulation is QPSK modulation, the target sequence includes at least one of the following sequences:
{-3,3,1,3,-3,3,1,-1,-3,-1,1,-1,1,-1,-3,3}；{-3,3,1,3,1,-1,-3,-1,1,-1,1,-1,-3,3,1,3}；
{-3,3,1,3,1,3,-3,-1,-3,-1,1,-1,-3,-1,1,3}；{-1,-3,3,-3,-3,1,3,1,-1,-3,3,1,3,-3,-1,-3}；
{-1,-3,3,-3,-1,-3,-1,1,3,1,3,1,-1,1,3,-3}；{-1,-3,3,-3,3,-3,-1,1,-1,-3,3,1,-1,1,3,-3}；
{-1,-3,3,1,-1,1,3,-3,3,-3,3,1,3,-3,-1,1}；{-1,-3,3,1,-1,1,3,-3,3,1,3,1,3,-3,-1,1}；
{-1,1,3,1,-1,1,-1,-3,3,-3,3,-3,-1,-3,3,1}；{-1,1,3,1,-1,1,-1,-3,3,-3,3,-3,-1,1,3,1}；
{-1,1,3,1,-1,1,3,-3,-1,-3,-1,-3,3,1,3,1}；{-1,1,3,1,-1,1,3,-3,-1,-3,3,-3,3,-3,-1,1}；
{-1,1,3,1,3,1,-1,-3,-1,-3,3,-3,-1,-3,3,1}；{1,-1,-3,3,1,3,-3,-1,1,-1,-3,-1,-3,-1,1,3}；
{1,-1,1,-1,-3,-1,1,3,-3,3,1,3,-3,3,-3,-1}；{1,-1,1,-1,-3,3,1,3,-3,3,1,3,1,-1,-3,-1}；
{1,-1,1,-1,1,-1,-3,3,1,3,-3,3,-3,-1,1,3}；{1,-1,1,3,1,-1,-3,3,-3,3,-3,3,1,3,-3,-1}；
{1,-1,1,3,1,3,-3,-1,1,-1,1,-1,1,-1,-3,3}；{1,3,1,-1,-3,3,-3,3,1,3,-3,3,-3,-1,1,3}；
{1,3,1,3,-3,3,1,-1,-3,-1,1,-1,-3,-1,-3,3}；{1,3,1,3,1,-1,-3,-1,-3,3,-3,-1,-3,3,-3,-1}；
{3,-3,3,-3,-1,-3,3,-3,3,1,-1,-3,-1,-3,-1,1}；{3,-3,3,-3,-1,1,3,1,-1,1,-1,1,-1,-3,3,1}；
{3,-3,3,-3,-1,1,3,1,-1,1,3,1,-1,1,-1,-3}；{3,-3,3,1,3,-3,-1,1,-1,1,3,1,-1,-3,3,-3}；
{3,1,-1,-3,3,-3,-1,1,3,1,3,1,-1,1,3,-3}；{3,1,3,1,-1,1,3,-3,3,1,-1,-3,3,-3,-1,1}；
{3,1,3,1,3,-3,-1,1,-1,-3,3,1,-1,1,3,-3}；{3,1,3,1,3,-3,-1,1,-1,1,3,1,-1,1,-1,-3}。
preferably, the target sequence includes 30 sequences.
Alternatively, the target sequence may be represented in the form shown in the following table 2, and table 2 also shows an example of the shifted autocorrelation mean, the cross correlation mean, the PAPR, and the BLER corresponding to each target sequence in this specific embodiment.
TABLE 2
Preferably, a value interval of the shifted autocorrelation mean of the sequence symbol is [0, 0.05], a value interval of the cross-correlation mean between the sequence symbols is [0, 0.4], a value interval of the PAPR of the time domain symbol corresponding to the sequence symbol is [0, 1.0] (unit: dB), and a value interval of the BLER of the reference signal sequence corresponding to the sequence is [0, 0.14 ].
In another embodiment of the present invention, if the length of the target sequence is 16 and the target modulation scheme is pi/2-BPSK modulation, the target sequence includes at least one of the following sequences:
{0,0,0,0,1,1,1,0,0,1,1,1,0,0,1,0}；{0,0,1,1,0,1,1,1,1,1,0,1,1,1,1,0}；
{0,1,0,0,1,1,0,1,1,0,1,0,1,1,0,1}；{0,1,0,1,0,0,1,0,1,0,1,1,0,0,1,0}；
{0,1,1,1,0,1,1,0,0,0,0,0,1,1,0,0}；{0,1,1,1,1,1,0,0,1,0,0,0,0,1,0,0}；
{1,0,0,0,1,1,0,0,0,1,1,1,1,1,0,1}；{1,0,0,0,1,1,0,1,1,0,1,1,0,1,0,1}；
{1,0,0,1,0,0,0,0,0,1,1,1,0,0,1,1}；{1,0,0,1,0,0,0,1,0,1,1,1,0,0,1,0}；
{1,0,0,1,0,0,1,0,0,1,1,0,1,0,1,0}；{1,0,0,1,0,0,1,0,0,1,1,1,0,0,1,0}；
{1,0,0,1,0,1,0,1,1,0,1,0,1,1,0,1}；{1,0,0,1,1,1,0,0,1,0,0,0,0,0,0,0}；
{1,0,0,1,1,1,0,0,1,0,1,0,0,1,0,0}；{1,0,1,0,0,0,1,1,0,1,0,1,1,0,1,1}；
{1,0,1,1,0,1,0,1,1,0,0,0,1,1,0,1}；{1,0,1,1,0,1,1,0,0,1,0,1,0,1,1,0}；
{1,1,0,0,0,0,0,1,0,0,1,1,1,0,0,1}；{1,1,0,0,1,0,0,0,0,0,1,1,1,0,0,1}；
{1,1,0,1,0,1,1,0,0,0,1,0,1,1,1,0}；{1,1,0,1,1,0,1,1,0,1,1,1,1,0,1,0}；
{1,1,1,0,0,0,0,0,0,0,0,1,1,0,0,0}；{1,1,1,0,0,0,1,1,0,0,0,1,1,0,1,1}；
{1,1,1,0,0,1,1,1,0,0,0,1,1,1,1,1}；{1,1,1,0,1,0,0,1,0,0,0,0,1,0,0,1}；
{1,1,1,0,1,1,1,0,0,0,0,0,1,1,0,1}；{1,1,1,1,0,0,0,1,0,0,0,0,1,0,0,1}；
{1,1,1,1,0,1,1,0,0,0,0,0,1,1,1,0}；{1,1,1,1,1,1,0,1,1,0,0,0,1,1,0,1}。
preferably, the target sequence includes 30 sequences.
Alternatively, the target sequence may be represented as shown in the following table 3, and table 3 also shows an example of the shifted autocorrelation mean, cross correlation mean, PAPR, and BLER corresponding to each target sequence in this specific embodiment.
TABLE 3
Preferably, a value interval of the shifted autocorrelation mean of the sequence symbol is [0, 0.1], a value interval of the cross-correlation mean between the sequence symbols is [0, 0.4], a value interval of the PAPR of the time domain symbol corresponding to the sequence symbol is [0, 1.2] (unit: dB), and a value interval of the BLER of the reference signal sequence corresponding to the sequence is [0, 0.14 ].
In a further embodiment of the present invention, if the length of the target sequence is 8 and the target modulation scheme is 8-PSK modulation, the target sequence includes at least one of the following sequences:
{-7,-5,7,5,-1,5,1,5}；{3,-3,-5,-3,-7,-3,1,7}；{3,5,-1,-7,5,7,7,-5}；
{3,7,1,-5,-5,3,5,7}；{5,-7,5,1,-5,-1,5,7}；{5,-7,5,7,5,-1,-5,1}；
{5,-5,-7,3,-3,-1,-3,-1}；{5,-3,-3,7,1,5,1,3}；{5,1,-3,1,-1,1,7,-5}；
{5,3,1,-5,5,-5,1,3}；{7,-7,3,-7,3,1,7,-7}；{7,-7,3,-7,7,1,3,1}；
{7,-7,3,-3,-5,1,7,-7}；{7,-7,5,-1,-7,-5,3,7}；{7,-7,5,1,7,5,-7,-3}；
{7,-5,-7,5,1,5,-1,5}；{7,-5,3,-1,-7,-7,-5,-3}；{7,-5,7,3,1,5,7,-3}；
{7,-3,-7,5,7,1,5,-7}；{7,-3,-7,7,5,-5,-5,-1}；{7,-3,-5,-7,5,-5,3,7}；
{7,-3,7,5,1,3,7,-5}；{7,1,-5,-7,7,-7,-5,1}；{7,1,-5,-7,7,-3,3,5}；
{7,1,-3,5,-7,3,5,7}；{7,3,1,7,-1,-1,-3,3}；{7,5,-5,5,7,-3,-5,-3}；
{7,5,-1,5,-1,1,-1,1}；{7,5,3,-7,3,-3,-1,5}；{7,5,3,-3,7,-7,-5,1}。
preferably, the target sequence includes 30 sequences.
Alternatively, the target sequence may be represented as shown in the following table 4, and an example of the shifted autocorrelation mean, cross correlation mean, PAPR, and BLER corresponding to each target sequence in this specific embodiment is also shown in table 4.
TABLE 4
Preferably, a value interval of the shifted autocorrelation mean of the sequence symbol is [0, 0.08], a value interval of the cross-correlation mean between the sequence symbols is [0, 0.5], a value interval of a PAPR of a time domain symbol corresponding to the sequence symbol is [0, 3.2] (unit: dB), and a value interval of a BLER of a reference signal sequence corresponding to the sequence is [0, 0.12 ].
Further optionally, the method for generating a reference signal according to the embodiment of the present invention may further include the following steps:
mapping the target reference signal to a Resource Element (RE) (resource element) by using transmission precoding and based on a Comb3 resource mapping pattern.
It can be understood that a scheme of generating and transmitting a target reference signal based on the combined mapping of the transmission precoding and the Comb3 resource mapping pattern is implemented, that is, a mapping manner supporting the combination of the transmission precoding and the Comb3 resource mapping pattern.
For the detailed situation of mapping, in combination with the above embodiments, considering that the mapping density of the Comb3 resource mapping pattern is 1/3, when the length of the target sequence is 8 and the target modulation mode is QPSK modulation or 8-PSK modulation, the REs of 2RBs are required to carry the target reference signal, and the specific mapping position may be presented as a Comb as shown in fig. 2; when the length of the target sequence is 16 and the target modulation mode is QPSK modulation or pi/2-BPSK modulation, the RE requiring 4RBs carries the target reference signal, and the specific mapping position may be presented as a comb as shown in fig. 3.
It should be noted that, when the indication information indicates that the sending end device uses the target reference signal for transmission, and uses the transmission precoding and Comb3 resource mapping pattern to map the target reference signal to the RE, the reference signal generation method of the embodiment of the present invention is executed, that is, the step of sequentially performing target modulation and discrete fourier transform modulation on the target sequence to generate the target reference signal is executed.
Referring to fig. 4, an embodiment of the present invention provides a terminal device, where the terminal device includes:
a generating module 201, configured to sequentially perform target modulation and discrete fourier transform modulation on a target sequence according to the indication information to generate a target reference signal;
wherein the length of the target sequence is 8 or 16; the indication information is used for indicating whether the sending end equipment adopts target reference signal transmission.
Optionally, in the terminal device according to the embodiment of the present invention, the target modulation includes at least one of pi/2-binary phase shift keying BPSK modulation, quadrature phase shift keying QPSK modulation, and 8-phase shift keying PSK modulation.
Optionally, in the terminal device according to the embodiment of the present invention, when the length of the target sequence is 8 and the target modulation is QPSK modulation, the target sequence includes at least one of the following sequences:
{-3,1,1,-3,1,-3,1,-3}；{-3,1,1,-1,3,-1,3,-3}；{-1,1,-1,-1,1,-3,3,-3}；
{-1,3,-3,1,-1,3,1,-3}；{1,-3,-3,-1,3,-1,3,1}；{1,-3,3,1,3,-1,-3,1}；
{1,-1,-3,-1,-3,-1,-3,3}；{1,-1,1,-3,3,-1,-1,1}；{1,3,-3,-1,-3,1,3,3}；
{1,3,-3,1,-1,1,3,3}；{1,3,-3,3,-1,1,-1,-3}；{1,3,-1,-3,3,-3,3,-3}；
{1,3,-1,1,1,3,3,-3}；{3,-3,-3,1,-1,3,-3,3}；{3,-3,-3,3,1,3,1,1}；
{3,-3,-1,1,-1,-3,3,1}；{3,-3,-1,1,-1,1,-1,1}；{3,-3,1,-1,-3,-1,-3,1}；
{3,-3,3,1,3,1,-1,1}；{3,-1,-3,3,-3,1,-1,1}；{3,1,-1,-3,-1,-1,1,-3}；
{3,1,-1,-3,1,-3,1,3}；{3,1,-1,-1,1,-1,1,-3}；{3,1,-1,1,3,1,3,-3}；
{3,1,-1,1,3,3,-3,3}；{3,1,-1,3,-3,-3,-1,-3}；{3,1,-1,3,-3,3,-3,-3}；
{3,1,1,3,-3,3,-1,1}；{3,1,3,1,-1,1,-1,1}；{3,3,-3,1,-1,3,-3,-3}。
optionally, in the terminal device according to the embodiment of the present invention, when the length of the target sequence is 16 and the target modulation is QPSK modulation, the target sequence includes at least one of the following sequences:
{-3,3,1,3,-3,3,1,-1,-3,-1,1,-1,1,-1,-3,3}；{-3,3,1,3,1,-1,-3,-1,1,-1,1,-1,-3,3,1,3}；
{-3,3,1,3,1,3,-3,-1,-3,-1,1,-1,-3,-1,1,3}；{-1,-3,3,-3,-3,1,3,1,-1,-3,3,1,3,-3,-1,-3}；
{-1,-3,3,-3,-1,-3,-1,1,3,1,3,1,-1,1,3,-3}；{-1,-3,3,-3,3,-3,-1,1,-1,-3,3,1,-1,1,3,-3}；
{-1,-3,3,1,-1,1,3,-3,3,-3,3,1,3,-3,-1,1}；{-1,-3,3,1,-1,1,3,-3,3,1,3,1,3,-3,-1,1}；
{-1,1,3,1,-1,1,-1,-3,3,-3,3,-3,-1,-3,3,1}；{-1,1,3,1,-1,1,-1,-3,3,-3,3,-3,-1,1,3,1}；
{-1,1,3,1,-1,1,3,-3,-1,-3,-1,-3,3,1,3,1}；{-1,1,3,1,-1,1,3,-3,-1,-3,3,-3,3,-3,-1,1}；
{-1,1,3,1,3,1,-1,-3,-1,-3,3,-3,-1,-3,3,1}；{1,-1,-3,3,1,3,-3,-1,1,-1,-3,-1,-3,-1,1,3}；
{1,-1,1,-1,-3,-1,1,3,-3,3,1,3,-3,3,-3,-1}；{1,-1,1,-1,-3,3,1,3,-3,3,1,3,1,-1,-3,-1}；
{1,-1,1,-1,1,-1,-3,3,1,3,-3,3,-3,-1,1,3}；{1,-1,1,3,1,-1,-3,3,-3,3,-3,3,1,3,-3,-1}；
{1,-1,1,3,1,3,-3,-1,1,-1,1,-1,1,-1,-3,3}；{1,3,1,-1,-3,3,-3,3,1,3,-3,3,-3,-1,1,3}；
{1,3,1,3,-3,3,1,-1,-3,-1,1,-1,-3,-1,-3,3}；{1,3,1,3,1,-1,-3,-1,-3,3,-3,-1,-3,3,-3,-1}；
{3,-3,3,-3,-1,-3,3,-3,3,1,-1,-3,-1,-3,-1,1}；{3,-3,3,-3,-1,1,3,1,-1,1,-1,1,-1,-3,3,1}；
{3,-3,3,-3,-1,1,3,1,-1,1,3,1,-1,1,-1,-3}；{3,-3,3,1,3,-3,-1,1,-1,1,3,1,-1,-3,3,-3}；
{3,1,-1,-3,3,-3,-1,1,3,1,3,1,-1,1,3,-3}；{3,1,3,1,-1,1,3,-3,3,1,-1,-3,3,-3,-1,1}；
{3,1,3,1,3,-3,-1,1,-1,-3,3,1,-1,1,3,-3}；{3,1,3,1,3,-3,-1,1,-1,1,3,1,-1,1,-1,-3}。
optionally, in the terminal device of the embodiment of the present invention, when the length of the target sequence is 16 and the target modulation scheme is pi/2-BPSK modulation, the target sequence includes at least one of the following sequences:
{0,0,0,0,1,1,1,0,0,1,1,1,0,0,1,0}；{0,0,1,1,0,1,1,1,1,1,0,1,1,1,1,0}；
{0,1,0,0,1,1,0,1,1,0,1,0,1,1,0,1}；{0,1,0,1,0,0,1,0,1,0,1,1,0,0,1,0}；
{0,1,1,1,0,1,1,0,0,0,0,0,1,1,0,0}；{0,1,1,1,1,1,0,0,1,0,0,0,0,1,0,0}；
{1,0,0,0,1,1,0,0,0,1,1,1,1,1,0,1}；{1,0,0,0,1,1,0,1,1,0,1,1,0,1,0,1}；
{1,0,0,1,0,0,0,0,0,1,1,1,0,0,1,1}；{1,0,0,1,0,0,0,1,0,1,1,1,0,0,1,0}；
{1,0,0,1,0,0,1,0,0,1,1,0,1,0,1,0}；{1,0,0,1,0,0,1,0,0,1,1,1,0,0,1,0}；
{1,0,0,1,0,1,0,1,1,0,1,0,1,1,0,1}；{1,0,0,1,1,1,0,0,1,0,0,0,0,0,0,0}；
{1,0,0,1,1,1,0,0,1,0,1,0,0,1,0,0}；{1,0,1,0,0,0,1,1,0,1,0,1,1,0,1,1}；
{1,0,1,1,0,1,0,1,1,0,0,0,1,1,0,1}；{1,0,1,1,0,1,1,0,0,1,0,1,0,1,1,0}；
{1,1,0,0,0,0,0,1,0,0,1,1,1,0,0,1}；{1,1,0,0,1,0,0,0,0,0,1,1,1,0,0,1}；
{1,1,0,1,0,1,1,0,0,0,1,0,1,1,1,0}；{1,1,0,1,1,0,1,1,0,1,1,1,1,0,1,0}；
{1,1,1,0,0,0,0,0,0,0,0,1,1,0,0,0}；{1,1,1,0,0,0,1,1,0,0,0,1,1,0,1,1}；
{1,1,1,0,0,1,1,1,0,0,0,1,1,1,1,1}；{1,1,1,0,1,0,0,1,0,0,0,0,1,0,0,1}；
{1,1,1,0,1,1,1,0,0,0,0,0,1,1,0,1}；{1,1,1,1,0,0,0,1,0,0,0,0,1,0,0,1}；
{1,1,1,1,0,1,1,0,0,0,0,0,1,1,1,0}；{1,1,1,1,1,1,0,1,1,0,0,0,1,1,0,1}。
optionally, in the terminal device according to the embodiment of the present invention, when the length of the target sequence is 8 and the target modulation scheme is 8-PSK modulation, the target sequence includes at least one of the following sequences:
{-7,-5,7,5,-1,5,1,5}；{3,-3,-5,-3,-7,-3,1,7}；{3,5,-1,-7,5,7,7,-5}；
{3,7,1,-5,-5,3,5,7}；{5,-7,5,1,-5,-1,5,7}；{5,-7,5,7,5,-1,-5,1}；
{5,-5,-7,3,-3,-1,-3,-1}；{5,-3,-3,7,1,5,1,3}；{5,1,-3,1,-1,1,7,-5}；
{5,3,1,-5,5,-5,1,3}；{7,-7,3,-7,3,1,7,-7}；{7,-7,3,-7,7,1,3,1}；
{7,-7,3,-3,-5,1,7,-7}；{7,-7,5,-1,-7,-5,3,7}；{7,-7,5,1,7,5,-7,-3}；
{7,-5,-7,5,1,5,-1,5}；{7,-5,3,-1,-7,-7,-5,-3}；{7,-5,7,3,1,5,7,-3}；
{7,-3,-7,5,7,1,5,-7}；{7,-3,-7,7,5,-5,-5,-1}；{7,-3,-5,-7,5,-5,3,7}；
{7,-3,7,5,1,3,7,-5}；{7,1,-5,-7,7,-7,-5,1}；{7,1,-5,-7,7,-3,3,5}；
{7,1,-3,5,-7,3,5,7}；{7,3,1,7,-1,-1,-3,3}；{7,5,-5,5,7,-3,-5,-3}；
{7,5,-1,5,-1,1,-1,1}；{7,5,3,-7,3,-3,-1,5}；{7,5,3,-3,7,-7,-5,1}。
optionally, the terminal device in the embodiment of the present invention may further include:
and a mapping module, configured to map the target reference signal to the resource elements REs by using transmission precoding and based on a Comb3 resource mapping pattern.
It can be understood that the terminal device provided in the embodiment of the present invention can implement the foregoing method for generating a reference signal executed by the terminal device, and the descriptions related to the method for generating a reference signal are applicable to the terminal device, and are not described herein again.
In the embodiment of the invention, under the condition that the target reference signal transmission is adopted according to the indication information for indicating whether the terminal equipment adopts the target reference signal transmission, the target sequence is selected, the PAPR of the reference signal symbol generated based on the target sequence can be reduced, namely, the problem caused by the fact that the PAPR of the reference signal symbol is higher than that of the data symbol when a service channel or a control channel adopts the transmission precoding can be properly improved or solved by reducing the PAPR of the reference signal symbol; specifically, according to the indication information, the target sequence is sequentially subjected to target modulation and discrete fourier transform modulation to generate a corresponding target reference signal, wherein the length of the target sequence is 8 or 16. Therefore, the effects of improving the power amplification efficiency of the terminal equipment, reducing the power consumption of the terminal equipment, improving the demodulation performance of the network side equipment and ensuring the uplink coverage range can be achieved.
Referring to fig. 5, an embodiment of the present invention provides a network side device, where the network side device includes:
a generating module 301, configured to sequentially perform target modulation and discrete fourier transform modulation on a target sequence according to the indication information to generate a target reference signal;
wherein the length of the target sequence is 8 or 16; the indication information is used for indicating whether the sending end equipment adopts target reference signal transmission.
Optionally, in the network-side device according to the embodiment of the present invention, the target modulation includes at least one of pi/2-binary phase shift keying BPSK modulation, quadrature phase shift keying QPSK modulation, or 8-phase shift keying PSK modulation.
Optionally, in the network side device according to the embodiment of the present invention, when the length of the target sequence is 8 and the target modulation is QPSK modulation, the target sequence includes at least one of the following sequences:
{-3,1,1,-3,1,-3,1,-3}；{-3,1,1,-1,3,-1,3,-3}；{-1,1,-1,-1,1,-3,3,-3}；
{-1,3,-3,1,-1,3,1,-3}；{1,-3,-3,-1,3,-1,3,1}；{1,-3,3,1,3,-1,-3,1}；
{1,-1,-3,-1,-3,-1,-3,3}；{1,-1,1,-3,3,-1,-1,1}；{1,3,-3,-1,-3,1,3,3}；
{1,3,-3,1,-1,1,3,3}；{1,3,-3,3,-1,1,-1,-3}；{1,3,-1,-3,3,-3,3,-3}；
{1,3,-1,1,1,3,3,-3}；{3,-3,-3,1,-1,3,-3,3}；{3,-3,-3,3,1,3,1,1}；
{3,-3,-1,1,-1,-3,3,1}；{3,-3,-1,1,-1,1,-1,1}；{3,-3,1,-1,-3,-1,-3,1}；
{3,-3,3,1,3,1,-1,1}；{3,-1,-3,3,-3,1,-1,1}；{3,1,-1,-3,-1,-1,1,-3}；
{3,1,-1,-3,1,-3,1,3}；{3,1,-1,-1,1,-1,1,-3}；{3,1,-1,1,3,1,3,-3}；
{3,1,-1,1,3,3,-3,3}；{3,1,-1,3,-3,-3,-1,-3}；{3,1,-1,3,-3,3,-3,-3}；
{3,1,1,3,-3,3,-1,1}；{3,1,3,1,-1,1,-1,1}；{3,3,-3,1,-1,3,-3,-3}。
optionally, in the network side device according to the embodiment of the present invention, when the length of the target sequence is 16 and the target modulation is QPSK modulation, the target sequence includes at least one of the following sequences:
{-3,3,1,3,-3,3,1,-1,-3,-1,1,-1,1,-1,-3,3}；{-3,3,1,3,1,-1,-3,-1,1,-1,1,-1,-3,3,1,3}；
{-3,3,1,3,1,3,-3,-1,-3,-1,1,-1,-3,-1,1,3}；{-1,-3,3,-3,-3,1,3,1,-1,-3,3,1,3,-3,-1,-3}；
{-1,-3,3,-3,-1,-3,-1,1,3,1,3,1,-1,1,3,-3}；{-1,-3,3,-3,3,-3,-1,1,-1,-3,3,1,-1,1,3,-3}；
{-1,-3,3,1,-1,1,3,-3,3,-3,3,1,3,-3,-1,1}；{-1,-3,3,1,-1,1,3,-3,3,1,3,1,3,-3,-1,1}；
{-1,1,3,1,-1,1,-1,-3,3,-3,3,-3,-1,-3,3,1}；{-1,1,3,1,-1,1,-1,-3,3,-3,3,-3,-1,1,3,1}；
{-1,1,3,1,-1,1,3,-3,-1,-3,-1,-3,3,1,3,1}；{-1,1,3,1,-1,1,3,-3,-1,-3,3,-3,3,-3,-1,1}；
{-1,1,3,1,3,1,-1,-3,-1,-3,3,-3,-1,-3,3,1}；{1,-1,-3,3,1,3,-3,-1,1,-1,-3,-1,-3,-1,1,3}；
{1,-1,1,-1,-3,-1,1,3,-3,3,1,3,-3,3,-3,-1}；{1,-1,1,-1,-3,3,1,3,-3,3,1,3,1,-1,-3,-1}；
{1,-1,1,-1,1,-1,-3,3,1,3,-3,3,-3,-1,1,3}；{1,-1,1,3,1,-1,-3,3,-3,3,-3,3,1,3,-3,-1}；
{1,-1,1,3,1,3,-3,-1,1,-1,1,-1,1,-1,-3,3}；{1,3,1,-1,-3,3,-3,3,1,3,-3,3,-3,-1,1,3}；
{1,3,1,3,-3,3,1,-1,-3,-1,1,-1,-3,-1,-3,3}；{1,3,1,3,1,-1,-3,-1,-3,3,-3,-1,-3,3,-3,-1}；
{3,-3,3,-3,-1,-3,3,-3,3,1,-1,-3,-1,-3,-1,1}；{3,-3,3,-3,-1,1,3,1,-1,1,-1,1,-1,-3,3,1}；
{3,-3,3,-3,-1,1,3,1,-1,1,3,1,-1,1,-1,-3}；{3,-3,3,1,3,-3,-1,1,-1,1,3,1,-1,-3,3,-3}；
{3,1,-1,-3,3,-3,-1,1,3,1,3,1,-1,1,3,-3}；{3,1,3,1,-1,1,3,-3,3,1,-1,-3,3,-3,-1,1}；
{3,1,3,1,3,-3,-1,1,-1,-3,3,1,-1,1,3,-3}；{3,1,3,1,3,-3,-1,1,-1,1,3,1,-1,1,-1,-3}。
optionally, in the network side device according to the embodiment of the present invention, when the length of the target sequence is 16 and the target modulation scheme is pi/2-BPSK modulation, the target sequence includes at least one of the following sequences:
{0,0,0,0,1,1,1,0,0,1,1,1,0,0,1,0}；{0,0,1,1,0,1,1,1,1,1,0,1,1,1,1,0}；
{0,1,0,0,1,1,0,1,1,0,1,0,1,1,0,1}；{0,1,0,1,0,0,1,0,1,0,1,1,0,0,1,0}；
{0,1,1,1,0,1,1,0,0,0,0,0,1,1,0,0}；{0,1,1,1,1,1,0,0,1,0,0,0,0,1,0,0}；
{1,0,0,0,1,1,0,0,0,1,1,1,1,1,0,1}；{1,0,0,0,1,1,0,1,1,0,1,1,0,1,0,1}；
{1,0,0,1,0,0,0,0,0,1,1,1,0,0,1,1}；{1,0,0,1,0,0,0,1,0,1,1,1,0,0,1,0}；
{1,0,0,1,0,0,1,0,0,1,1,0,1,0,1,0}；{1,0,0,1,0,0,1,0,0,1,1,1,0,0,1,0}；
{1,0,0,1,0,1,0,1,1,0,1,0,1,1,0,1}；{1,0,0,1,1,1,0,0,1,0,0,0,0,0,0,0}；
{1,0,0,1,1,1,0,0,1,0,1,0,0,1,0,0}；{1,0,1,0,0,0,1,1,0,1,0,1,1,0,1,1}；
{1,0,1,1,0,1,0,1,1,0,0,0,1,1,0,1}；{1,0,1,1,0,1,1,0,0,1,0,1,0,1,1,0}；
{1,1,0,0,0,0,0,1,0,0,1,1,1,0,0,1}；{1,1,0,0,1,0,0,0,0,0,1,1,1,0,0,1}；
{1,1,0,1,0,1,1,0,0,0,1,0,1,1,1,0}；{1,1,0,1,1,0,1,1,0,1,1,1,1,0,1,0}；
{1,1,1,0,0,0,0,0,0,0,0,1,1,0,0,0}；{1,1,1,0,0,0,1,1,0,0,0,1,1,0,1,1}；
{1,1,1,0,0,1,1,1,0,0,0,1,1,1,1,1}；{1,1,1,0,1,0,0,1,0,0,0,0,1,0,0,1}；
{1,1,1,0,1,1,1,0,0,0,0,0,1,1,0,1}；{1,1,1,1,0,0,0,1,0,0,0,0,1,0,0,1}；
{1,1,1,1,0,1,1,0,0,0,0,0,1,1,1,0}；{1,1,1,1,1,1,0,1,1,0,0,0,1,1,0,1}。
optionally, in the network-side device according to the embodiment of the present invention, when the length of the target sequence is 8 and the target modulation scheme is 8-PSK modulation, the target sequence includes at least one of the following sequences:
{-7,-5,7,5,-1,5,1,5}；{3,-3,-5,-3,-7,-3,1,7}；{3,5,-1,-7,5,7,7,-5}；
{3,7,1,-5,-5,3,5,7}；{5,-7,5,1,-5,-1,5,7}；{5,-7,5,7,5,-1,-5,1}；
{5,-5,-7,3,-3,-1,-3,-1}；{5,-3,-3,7,1,5,1,3}；{5,1,-3,1,-1,1,7,-5}；
{5,3,1,-5,5,-5,1,3}；{7,-7,3,-7,3,1,7,-7}；{7,-7,3,-7,7,1,3,1}；
{7,-7,3,-3,-5,1,7,-7}；{7,-7,5,-1,-7,-5,3,7}；{7,-7,5,1,7,5,-7,-3}；
{7,-5,-7,5,1,5,-1,5}；{7,-5,3,-1,-7,-7,-5,-3}；{7,-5,7,3,1,5,7,-3}；
{7,-3,-7,5,7,1,5,-7}；{7,-3,-7,7,5,-5,-5,-1}；{7,-3,-5,-7,5,-5,3,7}；
{7,-3,7,5,1,3,7,-5}；{7,1,-5,-7,7,-7,-5,1}；{7,1,-5,-7,7,-3,3,5}；
{7,1,-3,5,-7,3,5,7}；{7,3,1,7,-1,-1,-3,3}；{7,5,-5,5,7,-3,-5,-3}；
{7,5,-1,5,-1,1,-1,1}；{7,5,3,-7,3,-3,-1,5}；{7,5,3,-3,7,-7,-5,1}。
optionally, the network side device in the embodiment of the present invention may further include:
and a mapping module, configured to map the target reference signal to the resource elements REs by using transmission precoding and based on a Comb3 resource mapping pattern.
It can be understood that the network side device provided in the embodiment of the present invention can implement the foregoing method for generating a reference signal executed by the network side device, and the relevant descriptions about the method for generating a reference signal are all applicable to the network side device, and are not described herein again.
In the embodiment of the invention, when the target reference signal transmission is adopted is known according to the indication information for indicating whether the network side equipment adopts the target reference signal transmission, the target sequence is selected, the PAPR of the reference signal symbol generated based on the target sequence can be reduced, namely, the problem caused by the fact that the PAPR of the reference signal symbol is higher than that of the data symbol when a service channel or a control channel adopts transmission precoding can be properly improved or solved by reducing the PAPR of the reference signal symbol; specifically, according to the indication information, the target sequence is sequentially subjected to target modulation and discrete fourier transform modulation to generate a corresponding target reference signal, wherein the length of the target sequence is 8 or 16. Therefore, the effects of improving the power amplification efficiency of the network side equipment, reducing the power consumption of the network side equipment, improving the demodulation performance of the terminal equipment and ensuring the downlink coverage range can be achieved.
Fig. 6 is a block diagram of a terminal device of another embodiment of the present invention. The terminal device 400 shown in fig. 6 includes: at least one processor 401, memory 402, at least one network interface 404, and a user interface 403. The various components in the terminal device 400 are coupled together by a bus system 405. It is understood that the bus system 405 is used to enable connection communication between these components. The bus system 405 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled as bus system 405 in fig. 6.
The user interface 403 may include, among other things, a display, a keyboard, or a pointing device (e.g., a mouse, trackball, touch pad, or touch screen, among others.
It will be appreciated that memory 402 in embodiments of the invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data rate Synchronous Dynamic random access memory (ddr SDRAM ), Enhanced Synchronous SDRAM (ESDRAM), Synchlink DRAM (SLDRAM), and direct memory bus RAM (DRRAM). The memory 402 of the systems and methods described in this embodiment of the invention is intended to comprise, without being limited to, these and any other suitable types of memory.
In some embodiments, memory 402 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof: an operating system 4021 and application programs 4022.
The operating system 4021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is configured to implement various basic services and process hardware-based tasks. The application programs 4022 include various application programs, such as a Media Player (Media Player), a Browser (Browser), and the like, for implementing various application services. A program for implementing the method according to the embodiment of the present invention may be included in the application 4022.
In this embodiment of the present invention, the terminal device 400 further includes: a computer program stored on the memory 402 and executable on the processor 401, the computer program when executed by the processor 401 performing the steps of:
according to the indication information, sequentially carrying out target modulation and discrete Fourier transform modulation on the target sequence to generate a target reference signal;
wherein the length of the target sequence is 8 or 16; the indication information is used for indicating whether the sending end equipment adopts target reference signal transmission.
The method disclosed in the above embodiments of the present invention may be applied to the processor 401 or implemented by the processor 701. The processor 401 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 401. The Processor 401 may be a general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable Gate Array (FPGA) or other programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software modules may reside in ram, flash memory, rom, prom, or eprom, registers, among other computer-readable storage media known in the art. The computer readable storage medium is located in the memory 402, and the processor 401 reads the information in the memory 402 and performs the steps of the above method in combination with the hardware thereof. In particular, the computer readable storage medium has stored thereon a computer program which, when being executed by the processor 401, realizes the steps of the above-mentioned reference signal generation method embodiments.
It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the processing units may be implemented within one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units designed to perform the functions described herein, or a combination thereof.
For a software implementation, the techniques described in this disclosure may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described in this disclosure. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.
The terminal device 400 can implement the processes implemented by the terminal device in the foregoing embodiments, and in order to avoid repetition, the detailed description is omitted here.
In the embodiment of the invention, under the condition that the target reference signal transmission is adopted according to the indication information for indicating whether the terminal equipment adopts the target reference signal transmission, the target sequence is selected, the PAPR of the reference signal symbol generated based on the target sequence can be reduced, namely, the problem caused by the fact that the PAPR of the reference signal symbol is higher than that of the data symbol when a service channel or a control channel adopts the transmission precoding can be properly improved or solved by reducing the PAPR of the reference signal symbol; specifically, according to the indication information, the target sequence is sequentially subjected to target modulation and discrete fourier transform modulation to generate a corresponding target reference signal, wherein the length of the target sequence is 8 or 16. Therefore, the effects of improving the power amplification efficiency of the terminal equipment, reducing the power consumption of the terminal equipment, improving the demodulation performance of the network side equipment and ensuring the uplink coverage range can be achieved.
Referring to fig. 7, fig. 7 is a structural diagram of a network side device applied in the embodiment of the present invention, which can implement details of the foregoing reference signal generation method and achieve the same effect. As shown in fig. 7, the network side device 500 includes: a processor 501, a transceiver 502, a memory 503, a user interface 504, and a bus interface 505, wherein:
in this embodiment of the present invention, the network side device 500 further includes: a computer program stored on a memory 503 and executable on a processor 501, the computer program when executed by the processor 501 implementing the steps of:
according to the indication information, sequentially carrying out target modulation and discrete Fourier transform modulation on the target sequence to generate a target reference signal;
wherein the length of the target sequence is 8 or 16; the indication information is used for indicating whether the sending end equipment adopts target reference signal transmission.
In fig. 7, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 501 and various circuits of memory represented by memory 503 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. Bus interface 505 provides an interface. The transceiver 502 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. For different user devices, the user interface 504 may also be an interface capable of interfacing with a desired device externally, including but not limited to a keypad, display, speaker, microphone, joystick, etc.
The processor 501 is responsible for managing the bus architecture and general processing, and the memory 503 may store data used by the processor 501 in performing operations.
In the embodiment of the invention, when the target reference signal transmission is adopted is known according to the indication information for indicating whether the network side equipment adopts the target reference signal transmission, the target sequence is selected, the PAPR of the reference signal symbol generated based on the target sequence can be reduced, namely, the problem caused by the fact that the PAPR of the reference signal symbol is higher than that of the data symbol when a service channel or a control channel adopts transmission precoding can be properly improved or solved by reducing the PAPR of the reference signal symbol; specifically, according to the indication information, the target sequence is sequentially subjected to target modulation and discrete fourier transform modulation to generate a corresponding target reference signal, wherein the length of the target sequence is 8 or 16. Therefore, the effects of improving the power amplification efficiency of the network side equipment, reducing the power consumption of the network side equipment, improving the demodulation performance of the terminal equipment and ensuring the downlink coverage range can be achieved.
Preferably, an embodiment of the present invention further provides a terminal device, which includes a processor, a memory, and a computer program stored in the memory and capable of running on the processor, where the computer program, when executed by the processor, implements each process of the above-mentioned reference signal generation method embodiment, and can achieve the same technical effect, and details are not repeated here to avoid repetition.
Preferably, an embodiment of the present invention further provides a network-side device, which includes a processor, a memory, and a computer program stored in the memory and capable of running on the processor, where the computer program, when executed by the processor, implements each process of the above-mentioned reference signal generation method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again.
The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the above-mentioned reference signal generation method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (12)
1. A method for generating a reference signal, the method comprising:
according to the indication information, sequentially carrying out target modulation and discrete Fourier transform modulation on the target sequence to generate a target reference signal;
wherein the length of the target sequence is 8 or 16; the indication information is used for indicating whether the sending end equipment adopts the target reference signal transmission.
2. The method of claim 1,
the target modulation includes at least one of pi/2-Binary Phase Shift Keying (BPSK) modulation, Quadrature Phase Shift Keying (QPSK) modulation, and 8-Phase Shift Keying (PSK) modulation.
3. The method according to claim 1, wherein in case that the target sequence has a length of 8 and the target modulation is QPSK modulation, the target sequence comprises at least one of the following sequences:
{-3,1,1,-3,1,-3,1,-3}；{-3,1,1,-1,3,-1,3,-3}；{-1,1,-1,-1,1,-3,3,-3}；
{-1,3,-3,1,-1,3,1,-3}；{1,-3,-3,-1,3,-1,3,1}；{1,-3,3,1,3,-1,-3,1}；
{1,-1,-3,-1,-3,-1,-3,3}；{1,-1,1,-3,3,-1,-1,1}；{1,3,-3,-1,-3,1,3,3}；
{1,3,-3,1,-1,1,3,3}；{1,3,-3,3,-1,1,-1,-3}；{1,3,-1,-3,3,-3,3,-3}；
{1,3,-1,1,1,3,3,-3}；{3,-3,-3,1,-1,3,-3,3}；{3,-3,-3,3,1,3,1,1}；
{3,-3,-1,1,-1,-3,3,1}；{3,-3,-1,1,-1,1,-1,1}；{3,-3,1,-1,-3,-1,-3,1}；
{3,-3,3,1,3,1,-1,1}；{3,-1,-3,3,-3,1,-1,1}；{3,1,-1,-3,-1,-1,1,-3}；
{3,1,-1,-3,1,-3,1,3}；{3,1,-1,-1,1,-1,1,-3}；{3,1,-1,1,3,1,3,-3}；
{3,1,-1,1,3,3,-3,3}；{3,1,-1,3,-3,-3,-1,-3}；{3,1,-1,3,-3,3,-3,-3}；
{3,1,1,3,-3,3,-1,1}；{3,1,3,1,-1,1,-1,1}；{3,3,-3,1,-1,3,-3,-3}。
4. the method according to claim 1, wherein in case that the target sequence has a length of 16 and the target modulation is QPSK modulation, the target sequence comprises at least one of the following sequences:
{-3,3,1,3,-3,3,1,-1,-3,-1,1,-1,1,-1,-3,3}；{-3,3,1,3,1,-1,-3,-1,1,-1,1,-1,-3,3,1,3}；
{-3,3,1,3,1,3,-3,-1,-3,-1,1,-1,-3,-1,1,3}；{-1,-3,3,-3,-3,1,3,1,-1,-3,3,1,3,-3,-1,-3}；
{-1,-3,3,-3,-1,-3,-1,1,3,1,3,1,-1,1,3,-3}；{-1,-3,3,-3,3,-3,-1,1,-1,-3,3,1,-1,1,3,-3}；
{-1,-3,3,1,-1,1,3,-3,3,-3,3,1,3,-3,-1,1}；{-1,-3,3,1,-1,1,3,-3,3,1,3,1,3,-3,-1,1}；
{-1,1,3,1,-1,1,-1,-3,3,-3,3,-3,-1,-3,3,1}；{-1,1,3,1,-1,1,-1,-3,3,-3,3,-3,-1,1,3,1}；
{-1,1,3,1,-1,1,3,-3,-1,-3,-1,-3,3,1,3,1}；{-1,1,3,1,-1,1,3,-3,-1,-3,3,-3,3,-3,-1,1}；
{-1,1,3,1,3,1,-1,-3,-1,-3,3,-3,-1,-3,3,1}；{1,-1,-3,3,1,3,-3,-1,1,-1,-3,-1,-3,-1,1,3}；
{1,-1,1,-1,-3,-1,1,3,-3,3,1,3,-3,3,-3,-1}；{1,-1,1,-1,-3,3,1,3,-3,3,1,3,1,-1,-3,-1}；
{1,-1,1,-1,1,-1,-3,3,1,3,-3,3,-3,-1,1,3}；{1,-1,1,3,1,-1,-3,3,-3,3,-3,3,1,3,-3,-1}；
{1,-1,1,3,1,3,-3,-1,1,-1,1,-1,1,-1,-3,3}；{1,3,1,-1,-3,3,-3,3,1,3,-3,3,-3,-1,1,3}；
{1,3,1,3,-3,3,1,-1,-3,-1,1,-1,-3,-1,-3,3}；{1,3,1,3,1,-1,-3,-1,-3,3,-3,-1,-3,3,-3,-1}；
{3,-3,3,-3,-1,-3,3,-3,3,1,-1,-3,-1,-3,-1,1}；{3,-3,3,-3,-1,1,3,1,-1,1,-1,1,-1,-3,3,1}；
{3,-3,3,-3,-1,1,3,1,-1,1,3,1,-1,1,-1,-3}；{3,-3,3,1,3,-3,-1,1,-1,1,3,1,-1,-3,3,-3}；
{3,1,-1,-3,3,-3,-1,1,3,1,3,1,-1,1,3,-3}；{3,1,3,1,-1,1,3,-3,3,1,-1,-3,3,-3,-1,1}；
{3,1,3,1,3,-3,-1,1,-1,-3,3,1,-1,1,3,-3}；{3,1,3,1,3,-3,-1,1,-1,1,3,1,-1,1,-1,-3}。
5. the method of claim 1, wherein if the target sequence has a length of 16 and the target modulation scheme is pi/2-BPSK modulation, the target sequence comprises at least one of the following sequences:
{0,0,0,0,1,1,1,0,0,1,1,1,0,0,1,0}；{0,0,1,1,0,1,1,1,1,1,0,1,1,1,1,0}；
{0,1,0,0,1,1,0,1,1,0,1,0,1,1,0,1}；{0,1,0,1,0,0,1,0,1,0,1,1,0,0,1,0}；
{0,1,1,1,0,1,1,0,0,0,0,0,1,1,0,0}；{0,1,1,1,1,1,0,0,1,0,0,0,0,1,0,0}；
{1,0,0,0,1,1,0,0,0,1,1,1,1,1,0,1}；{1,0,0,0,1,1,0,1,1,0,1,1,0,1,0,1}；
{1,0,0,1,0,0,0,0,0,1,1,1,0,0,1,1}；{1,0,0,1,0,0,0,1,0,1,1,1,0,0,1,0}；
{1,0,0,1,0,0,1,0,0,1,1,0,1,0,1,0}；{1,0,0,1,0,0,1,0,0,1,1,1,0,0,1,0}；
{1,0,0,1,0,1,0,1,1,0,1,0,1,1,0,1}；{1,0,0,1,1,1,0,0,1,0,0,0,0,0,0,0}；
{1,0,0,1,1,1,0,0,1,0,1,0,0,1,0,0}；{1,0,1,0,0,0,1,1,0,1,0,1,1,0,1,1}；
{1,0,1,1,0,1,0,1,1,0,0,0,1,1,0,1}；{1,0,1,1,0,1,1,0,0,1,0,1,0,1,1,0}；
{1,1,0,0,0,0,0,1,0,0,1,1,1,0,0,1}；{1,1,0,0,1,0,0,0,0,0,1,1,1,0,0,1}；
{1,1,0,1,0,1,1,0,0,0,1,0,1,1,1,0}；{1,1,0,1,1,0,1,1,0,1,1,1,1,0,1,0}；
{1,1,1,0,0,0,0,0,0,0,0,1,1,0,0,0}；{1,1,1,0,0,0,1,1,0,0,0,1,1,0,1,1}；
{1,1,1,0,0,1,1,1,0,0,0,1,1,1,1,1}；{1,1,1,0,1,0,0,1,0,0,0,0,1,0,0,1}；
{1,1,1,0,1,1,1,0,0,0,0,0,1,1,0,1}；{1,1,1,1,0,0,0,1,0,0,0,0,1,0,0,1}；
{1,1,1,1,0,1,1,0,0,0,0,0,1,1,1,0}；{1,1,1,1,1,1,0,1,1,0,0,0,1,1,0,1}。
6. the method according to claim 1, wherein in case that the length of the target sequence is 8 and the target modulation scheme is 8-PSK modulation, the target sequence comprises at least one of the following sequences:
{-7,-5,7,5,-1,5,1,5}；{3,-3,-5,-3,-7,-3,1,7}；{3,5,-1,-7,5,7,7,-5}；
{3,7,1,-5,-5,3,5,7}；{5,-7,5,1,-5,-1,5,7}；{5,-7,5,7,5,-1,-5,1}；
{5,-5,-7,3,-3,-1,-3,-1}；{5,-3,-3,7,1,5,1,3}；{5,1,-3,1,-1,1,7,-5}；
{5,3,1,-5,5,-5,1,3}；{7,-7,3,-7,3,1,7,-7}；{7,-7,3,-7,7,1,3,1}；
{7,-7,3,-3,-5,1,7,-7}；{7,-7,5,-1,-7,-5,3,7}；{7,-7,5,1,7,5,-7,-3}；
{7,-5,-7,5,1,5,-1,5}；{7,-5,3,-1,-7,-7,-5,-3}；{7,-5,7,3,1,5,7,-3}；
{7,-3,-7,5,7,1,5,-7}；{7,-3,-7,7,5,-5,-5,-1}；{7,-3,-5,-7,5,-5,3,7}；
{7,-3,7,5,1,3,7,-5}；{7,1,-5,-7,7,-7,-5,1}；{7,1,-5,-7,7,-3,3,5}；
{7,1,-3,5,-7,3,5,7}；{7,3,1,7,-1,-1,-3,3}；{7,5,-5,5,7,-3,-5,-3}；
{7,5,-1,5,-1,1,-1,1}；{7,5,3,-7,3,-3,-1,5}；{7,5,3,-3,7,-7,-5,1}。
7. the method according to any one of claims 1 to 6, further comprising:
mapping the target reference signals onto Resource Elements (REs) with transmission precoding and based on a Comb3 resource mapping pattern.
8. A terminal device, characterized in that the terminal device comprises:
the generating module is used for sequentially carrying out target modulation and discrete Fourier transform modulation on the target sequence according to the indication information to generate a target reference signal;
wherein the length of the target sequence is 8 or 16; the indication information is used for indicating whether the sending end equipment adopts the target reference signal transmission.
9. A network side device, wherein the network side device comprises:
the generating module is used for sequentially carrying out target modulation and discrete Fourier transform modulation on the target sequence according to the indication information to generate a target reference signal;
wherein the length of the target sequence is 8 or 16; the indication information is used for indicating whether the sending end equipment adopts the target reference signal transmission.
10. A terminal device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the method according to any one of claims 1 to 7.
11. A network-side device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the method according to any one of claims 1 to 7.
12. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 7.
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