CN109391434A - The configuration method and device of reference signal - Google Patents
The configuration method and device of reference signal Download PDFInfo
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- CN109391434A CN109391434A CN201710687671.3A CN201710687671A CN109391434A CN 109391434 A CN109391434 A CN 109391434A CN 201710687671 A CN201710687671 A CN 201710687671A CN 109391434 A CN109391434 A CN 109391434A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
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Abstract
The present invention provides a kind of configuration method of reference signal and device, the method for one of them includes: the selection rule of configuration phase tracking reference signal；According to the selection rule, K kind mapping mode is selected, and generates phase tracking reference signal, wherein, K be positive integer through the invention, solve the mode the technical issues of impacting to spectrum efficiency or peak-to-average force ratio is caused to become larger for adding phase tracking reference signal in the related technology.
Description
Technical field
The present invention relates to the communications fields, in particular to the configuration method and device of a kind of reference signal.
Background technique
In high band, uplink single-carrier transmission technology is similarly subjected to the influence of phase noise, and with modulation demodulation system
The raising of grade, the influence of phase noise is with regard to more serious, and uplink single-carrier is the orthogonal of discrete Fourier transform spread spectrum at present
Frequency division multiplexing multiple access access technology scheme (Discrete-Fourier-transform spread optical Orthogonal
Frequency Division Multiplexed, DFT-S-OFDM).Two kinds of uplink single-carrier transmission are proposed in the related technology
The method of middle addition phase tracking reference signal.
The first is that phase tracking reference signal is added that is, in data sample before discrete Fourier transform module,
Data and phase tracking reference signal carry out discrete Fourier transform simultaneously, and data and phase tracking reference signal are mixed into later
Carry out other processing, i.e. Pre-DFT phase tracking reference signal together as shown in Figure 1, Fig. 1 be the present invention in the related technology
The structural schematic diagram of re-DFT phase tracking reference signal.But the ability after receiving end needs to carry out inverse discrete fourier transform
Phase tracking reference signal is obtained, 1a illustrates the block structure of phase tracking reference signal.
Second method is to add phase tracking reference signal again after discrete Fourier transform, the Post-DFT
Phase tracking reference signal be after data finish discrete Fourier transform insertion phase track reference signal, at this time can be with
According to phase tracking reference signal whether need punch operation in data symbol positions, i.e. the discrete Fourier transform of front
Whether points wait symbolic numbers all later, possible in the presence of two kinds at this time to determine the position of phase tracking reference signal: the
A kind of points for discrete Fourier transform are identical with symbolic number, and Fig. 2 is present invention Post-DFT phase tracking in the related technology
The structural schematic diagram of reference signal, including 2a and 2b, as shown in 2a, at this time discrete fourier variation after data symbol position
On, it needs partial symbols to be punching, insertion phase tracks reference signal on the sign bit of these punchings；Another kind is discrete
The points of Fourier transformation are less than required sign bit data, for example, if M data are needed, and the point of discrete Fourier transform
Several is M-K, some does not have data on the transformed character position of process at this time, can be believed phase noise reference at this time
It number is placed on these character positions, as shown in 2b.
First method will cause phase tracking reference signal and be diffused into entire frequency domain after finishing discrete Fourier transform,
It is more complicated when causing to demodulate, while spectrum efficiency may be impacted, second method will cause peak-to-average force ratio and become larger, excessively high
Peak-to-average force ratio be unacceptable in single carrier transmission technology.
For the above problem present in the relevant technologies, at present it is not yet found that the solution of effect.
Summary of the invention
The embodiment of the invention provides a kind of configuration method of reference signal and devices, at least to solve to add in the related technology
The technical issues of adding the mode of phase tracking reference signal to impact spectrum efficiency or peak-to-average force ratio caused to become larger.
According to one embodiment of present invention, a kind of configuration method of reference signal is provided, comprising: configuration phase tracking
The selection rule of reference signal；According to the selection rule, K kind mapping mode is selected, and generate phase tracking reference signal,
In, K be positive integer optionally,
According to one embodiment of present invention, the configuration method of another reference signal is provided, comprising: according to following letter
Cease the density of configuration phase tracking reference signal: the grade of modulation demodulation system, bandwidth, the phase tracking of configuration for distributing resource
The orthogonal port number of reference signal.
According to another embodiment of the invention, a kind of configuration device of reference signal is provided, comprising: configuration module,
Selection rule for configuration phase tracking reference signal；Processing module, for selecting the mapping of K kind according to the selection rule
Mode, and generate phase tracking reference signal, wherein K is positive integer.
According to another embodiment of the invention, the configuration device of another reference signal is provided, comprising: configuration mould
Block, for the density according to following information configuration phase tracking reference signal: the grade of modulation demodulation system, the band for distributing resource
The orthogonal port number of wide, configuration phase tracking reference signal.
According to still another embodiment of the invention, a kind of storage medium is additionally provided.The storage medium is set as storage and uses
In the program code for executing following steps:
Configuration phase tracks the selection rule of reference signal；
According to the selection rule, K kind mapping mode is selected, and generate phase tracking reference signal, wherein K is positive whole
Number.
Through the invention, by defining a kind of rule, in communications system transmission scene, different mappings mode can be selected
Phase tracking reference signal configuration, the characteristics of due to single carrier transmission mode, while considering processing phase tracking reference
The complexity and addition phase tracking reference signal of signal can be influenced caused by the peak-to-average force ratio of single-carrier system.It solves
The technology that the mode of phase tracking reference signal impacts to spectrum efficiency or cause peak-to-average force ratio to become larger is added in the related technology
Problem.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of Pre-DFT phase tracking reference signal in the related technology of the invention；
Fig. 2 is the structural schematic diagram of Post-DFT phase tracking reference signal in the related technology of the invention；
Fig. 3 is a kind of flow chart of the configuration method of reference signal according to an embodiment of the present invention；
Fig. 4 is the flow chart of the configuration method of another reference signal according to an embodiment of the present invention；
Fig. 5 is a kind of structural block diagram of the configuration device of reference signal according to an embodiment of the present invention；
Fig. 6 is the structural block diagram of the configuration device of another reference signal according to an embodiment of the present invention；
Fig. 7 is in the embodiment of the present invention while to use Pre-DFT phase tracking reference signal and Post-DFT phase tracking
The schematic diagram of reference signal；
Fig. 8 is schematic diagram when using the discrete Fourier transform of different points in the embodiment of the present invention；
Fig. 9 is the schematic diagram of the Density and distribution of phase tracking reference signal in the embodiment of the present invention；
Figure 10 is to configure the Post-DFT phase tracking reference signal compared with low-density in the embodiment of the present invention while configuring phase
To the schematic diagram of the Pre-DFT phase tracking reference signal of higher density；
Figure 11 is the schematic diagram of the lower Pre-DFT phase tracking reference signal of configuration density in the embodiment of the present invention；
Figure 12 is the schematic diagram that the embodiment of the present invention configures 8 orthogonal phase tracking reference signal ports；
Figure 13 is the schematic diagram for 8 orthogonal ports PTRS that the embodiment of the present invention is configured with the non-theoretical density of time domain；
Figure 14 is the schematic diagram that the frequency domain density of phase tracking reference signal in the embodiment of the present invention is 1/2；
Figure 15 is to determine that frequency domain is close according to the orthogonal port number of MCS grade and PTRS and with frame in the embodiment of the present invention
The schematic diagram that degree is 1/4.
Specific embodiment
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and in combination with Examples.It should be noted that not conflicting
In the case of, the features in the embodiments and the embodiments of the present application can be combined with each other.
It should be noted that description and claims of this specification and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.
Embodiment 1
A kind of configuration method of reference signal is provided in the present embodiment, and Fig. 3 is one kind according to an embodiment of the present invention
The flow chart of the configuration method of reference signal, as shown in figure 3, the process includes the following steps:
Step S302, configuration phase track the selection rule of reference signal；
Step S304 selects K kind mapping mode, and generates phase tracking reference signal according to selection rule, wherein K is
Positive integer.
Through the above steps, by defining a kind of rule, in communications system transmission scene, different mappings side can be selected
The configuration of the phase tracking reference signal of formula the characteristics of due to single carrier transmission mode, while considering processing phase tracking ginseng
Examine the complexity and addition phase tracking reference signal influence caused by the peak-to-average force ratio of single-carrier system of signal.It solves
The skill that the mode of phase tracking reference signal impacts to spectrum efficiency or cause the peak-to-average force ratio become larger is added in the related technology
Art problem.
Optionally, the executing subject of above-mentioned steps can for base station, terminal etc., but not limited to this.
In the present embodiment, mapping mode include the following three types in one of: the first mapping mode: be discrete Fu in data
In phase tracking reference signal is added before leaf transformation；Second mapping mode: it is added after data do discrete Fourier transform
Phase tracking reference signal；Third mapping mode: while before data do discrete Fourier transform and in discrete fourier
Phase tracking reference signal is added after transformation.
Optionally, select rule for first signaling, wherein the first signaling is high-level signaling or physical layer signaling.
Alternatively, select rule for predefined rule, including at least one of: the specified threshold of modulation demodulation system, bandwidth allocation
Specified threshold.
Optionally, according to the selection rule, selection K kind mapping mode includes:
The mapping of phase tracking reference signal is determined according to the size relation between at least one of and specified threshold
Mode: the bandwidth of current modulation demodulation system, distribution.
Optionally, third mapping mode further include: the first phase added before data do discrete Fourier transform chases after
The predefined density of track reference signal and the second phase added after discrete Fourier transform tracking reference signal.
Optionally, density passes through the second signal deployment, wherein the second signaling includes high-level signaling or physical layer signaling.
In the present embodiment, density is described one of in the following manner: being respectively first phase tracking reference signal
With second phase tracking reference signal configuration density, first phase track reference signal and second phase tracking reference signal it
Between density content.
Optionally, third mapping mode further include: first phase tracks reference signal and second phase tracks reference signal
The grade of corresponding modulation demodulation system.
Optionally, third mapping mode further include: first phase tracks reference signal and second phase tracks reference signal
Relative to the opposite variation grades for being allocated to end modification demodulation mode.
Optionally, selecting the phase tracking reference signal of a variety of mapping modes by selection rule includes: to carry out in terminal
When the orthogonal frequency division multiple access technical solution transmission of discrete Fourier transform spread spectrum, reflected by the way that selection rule selection is a variety of
Penetrate the phase tracking reference signal of mode.
The configuration method of another reference signal is provided in the present embodiment, and Fig. 4 is according to an embodiment of the present invention another
A kind of flow chart of the configuration method of reference signal, as shown in figure 4, the process includes the following steps:
Step S402, according to the density of following information configuration phase tracking reference signal: the grade of modulation demodulation system is divided
The orthogonal port number of the phase tracking reference signal of bandwidth, configuration with resource.
Optionally, method further include: the first threshold of the orthogonal port number of setting phase tracking reference signal, and setting phase
The second threshold of the density of position tracking reference signal.
Optionally, the close of reference signal is tracked according to the orthogonal port number configuration phase of the phase tracking reference signal of configuration
Degree includes: the configuration phase tracking when the orthogonal port number of the phase tracking reference signal of configuration is greater than the first threshold
The time domain density of reference signal is less than the second threshold.
Through the above description of the embodiments, those skilled in the art can be understood that according to above-mentioned implementation
The method of example can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but it is very much
In the case of the former be more preferably embodiment.Based on this understanding, technical solution of the present invention is substantially in other words to existing
The part that technology contributes can be embodied in the form of software products, which is stored in a storage
In medium (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that a terminal device (can be mobile phone, calculate
Machine, server or network equipment etc.) execute method described in each embodiment of the present invention.
Embodiment 2
Additionally provide a kind of configuration device of reference signal in the present embodiment, the device for realizing above-described embodiment and
Preferred embodiment, the descriptions that have already been made will not be repeated.As used below, predetermined function may be implemented in term " module "
The combination of the software and/or hardware of energy.It is hard although device described in following embodiment is preferably realized with software
The realization of the combination of part or software and hardware is also that may and be contemplated.
Fig. 5 is a kind of structural block diagram of the configuration device of reference signal according to an embodiment of the present invention, as shown in figure 5, should
Device includes:
Configuration module 50, the selection rule for configuration phase tracking reference signal；
Processing module 52, for selecting K kind mapping mode, and generate phase tracking reference signal according to selection rule,
In, K is positive integer.
Optionally, mapping mode includes following one: the first mapping mode: being added before data do discrete Fourier transform
Add phase tracking reference signal；Second mapping mode: phase tracking is added after data do discrete Fourier transform with reference to letter
Number；Third mapping mode: while phase is added before data do discrete Fourier transform and after discrete Fourier transform
Position tracking reference signal.
Fig. 6 is the structural block diagram of the configuration device of another reference signal according to an embodiment of the present invention, as shown in fig. 6,
The device includes: configuration module 60, for the density according to following information configuration phase tracking reference signal: modulation demodulation system
Grade, distribute the orthogonal port number of the bandwidth of resource, the phase tracking reference signal of configuration.
Optionally, device further include: setup module, for the first threshold of the orthogonal port number of phase tracking reference signal,
And the second threshold of the density of setting phase tracking reference signal.
Optionally, configuration module is tracked according to the orthogonal port number configuration phase of the phase tracking reference signal of configuration and is referred to
The density of signal includes: the configuration phase when the orthogonal port number of the phase tracking reference signal of configuration is greater than first threshold
The time domain density for tracking reference signal is less than second threshold.
It should be noted that above-mentioned modules can be realized by software or hardware, for the latter, Ke Yitong
Following manner realization is crossed, but not limited to this: above-mentioned module is respectively positioned in same processor；Alternatively, above-mentioned modules are with any
Combined form is located in different processors.
Embodiment 3
The present embodiment is according to an alternative embodiment of the invention, for combining specific example to carry out specifically the application
It is bright:
The present embodiment defines a kind of rule, in communications system transmission scene, can select the phase of different mappings mode
Track the configuration of reference signal；I.e. DFT-S-OFDM transmit when, can choose Pre-DFT phase tracking reference signal or
Post-DFT phase tracking reference signal selects both reference signals while using.
The rule can be one signaling of configuration, and three kinds of selections of above-mentioned phase tracking reference signal are signaled by this
Mode can will use Pre-DFT and Post-DFT PTRS as the configuration of default simultaneously, this signaling can be high-level signaling
Either physical layer signaling；
The rule can be is to confirm using DFT points (or density of Post-DFT PTRS) and current MCS grade
No the case where being existed simultaneously there are two kinds of PTRS；
The rule can be the threshold value by setting modulation demodulation system and bandwidth, to determine above-mentioned phase tracking with reference to letter
Number three kinds of selection modes, in the case that modulation demodulation system is higher ranked, need simultaneously using two kinds of phase trackings with reference to letter
Number；
When defaulting while using Pre-DFT and Post-DFT phase tracking reference signal, the density of the two is individually to adopt
With a kind of half (or some proportion) of the density of phase tracking reference signal inserted mode, expense is more saved at this time；
When by signaling while using Pre-DFT and Post-DFT phase tracking reference signal, the density point of the two
With situation, this signaling can be high-level signaling either physical layer signaling；
It can be the density that the two is respectively configured, need that a signaling is respectively configured for two kinds of PTRS at this time；
It can be the density content of the two, i.e., come according to a certain percentage by a signaling according to current MCS grade
Distribute the density of two kinds of reference signals；
It can be relative to terminal MCS grade, the reference MCS grade of two kinds of PTRS.
The present embodiment, including in attached drawing, the pattern (mode) of DMRS, phase tracking reference signal are example,
There are the pattern of diversified forms to be also applied for method described below for he.
Phase noise causes very big influence to communication system in high band, when using the modulation system of higher-order,
The influence of same phase noise can not be ignored.Simultaneously because the characteristics of single carrier transmission mode, need to consider simultaneously to handle phase
The complexity and addition phase tracking reference signal of position tracking reference signal can be caused by the peak-to-average force ratios of single-carrier system
It influences.
The method for compensating the phase noise of single carrier can chase after for phase is added before data do discrete Fourier transform
Track reference signal, or phase tracking reference signal is added on time-frequency domain after data finish discrete Fourier transform.
Method in the related technology or it will cause phase tracking reference signal and be diffused into entire frequency after finishing discrete Fourier transform
Domain, it is more complicated when causing to demodulate, while may impact or will cause peak-to-average force ratio to spectrum efficiency and become larger, it is excessively high
Peak-to-average force ratio is unacceptable in single carrier transmission technology.
Specific embodiment mode 1a:
One signaling is set, to indicate the service condition of Pre-DFT and Post-DFT phase tracking reference signal.It can be with
It is single use Pre-DFT phase tracking reference signal or Post-DFT phase tracking reference signal either while using
Pre-DFT and Post-DFT phase tracking reference signal；
The Pre-DFT phase tracking reference signal is that phase tracking ginseng is added before doing discrete Fourier transform
Signal is examined, insertion phase tracks reference signal between data sample, and phase tracking reference signal at this time can be with arbitrary size
Block structure, in conjunction with embodiment above-mentioned, as shown in the 1a of Fig. 1, block size 2, and be inserted into density and modulation /demodulation side
Formula grade is related to bandwidth, and the advantage of Pre-DFT is not will increase the peak-to-average force ratio of single carrier transmission, but there is also certain
Deficiency, that is, the complexity designed is higher, and phase tracking reference signal and data can mix after finishing discrete Fourier transform
To together, the complexity and accuracy of phase tracking reference signal and data demodulation will affect in demodulation；The Post-
DFT phase tracking reference signal is the insertion phase tracking reference signal after data finish discrete Fourier transform, that is, is existed
Insertion phase tracks reference signal on certain sign bits of the frequency domain position of selection, including two methods, as Fig. 2 2a and
It shown in 2b, using figure method as shown in 2a, needs to punch a part of data, so will cause a part of data waste, make
It is larger to implement difficulty using the discrete Fourier transform of different points for the method shown in Fig. 2 b, so which is specifically chosen
The mode of kind insertion needs to be selected in advance according to practical situation.
It can choose different phase tracking reference signals according to the difference of scene, such as in view of may cause peak-to-average force ratio
Excessively high scene can cause serious influence to the transmission of single carrier, can be at this time Pre-DFT phase by the signal deployment
Track reference signal；In view of peak-to-average force ratio will not be too high scene, will cause data using Pre-DFT phase tracking reference signal
It is only admixed together later to finish discrete Fourier transform again with reference signal, deals with more complexity, can lead at this time
Crossing the signal deployment is Post-DFT phase tracking reference signal.
Individually using Pre-DFT phase tracking reference signal or Post-DFT phase tracking reference signal compared to same
When it is more simple using the configuration method of two kinds of phase tracking reference signals；But join using the bigger phase tracking of density
When examining signal, Pre-DFT phase tracking reference signal is after DFT and data are admixed together, to phase tracking reference signal
Compensation effect influence bigger, and more highdensity phase tracking reference signal can make Post-DFT phase tracking reference signal
Peak-to-average force ratio is excessive, is not suitable for using in the environment of single carrier, be can be set at this time for the same terminal, while using Pre-
DFT and Post-DFT phase tracking reference signal, in the case where modulation demodulation system is higher ranked to phase tracking with reference to letter
Number density requirement it is higher, therefore joined simultaneously using two kinds of phase tracking reference signals compared to a certain phase tracking is only used
Signal is examined, the density that phase tracking reference signal at this time is inserted into before DFT or is inserted into after DFT can be reduced, it is close
Degree reduction, which is meant that, can reduce the shortcomings that certain inserted mode is brought to DFT-S-OFDM.As shown in Figure 1.
Fig. 7 is in the embodiment of the present invention while to use Pre-DFT phase tracking reference signal and Post-DFT phase tracking
The schematic diagram of reference signal.In order to reduce certain signaling overheads, can will be chased after simultaneously using Pre-DFT and Post-DFT phase
Track reference signal is set as the configuration of default, the signaling of 1 bit is arranged furthermore to notify to be single use Pre-DFT still
Post-DFT phase tracking reference signal.I.e. when simultaneously using Pre-DFT and Post-DFT phase tracking reference signal when be not required to
The transmission of any indication signaling is wanted, transmitting terminal is defaulted while using both phase tracking reference signal, and what receiving end was defaulted
It is demodulated according to both methods.And a certain method in two kinds of phase tracking reference signals is used alone if necessary
When, need to signal use Pre-DFT phase tracking reference signal using which kind of phase tracking reference signal, such as 1 representative,
And 0 indicates to use Post-DFT phase tracking reference signal.And this signaling can be high-level signaling either physical layer signaling.
When using the discrete Fourier transform of different points, two kinds of phase tracking reference signals are used while above-mentioned
Situation is still set up, and the discrete Fourier transform of difference points brings certain complexity, but can effectively eliminate number
The case where according to being perforated, as shown in figure 8, Fig. 8 is when using the discrete Fourier transform of different points in the embodiment of the present invention
Schematic diagram.
Specific embodiment mode 1b: if Post-DFT phase tracking reference signal uses the discrete fourier of (M-K) point
It, can be according to K value size (K) and modulation demodulation system grade, to determine whether exist while being configured with Pre-DFT when transformation
With Post-DFT phase tracking reference signal.
The points of DFT are less than required M point sample value at this time, i.e., determine that the phase tracking reference signal used includes at this time
Post-DFT phase tracking reference signal, because only that non-perforated Post-DFT just can have points and the sample value needed not
Same situation.The density of available Post-DFT phase tracking reference signal at this time, and according to current modulation demodulation system
Grade, if available be only configured with the density that Post-DFT phase tracking reference signal is phase tracking reference signal, root
Determine whether to deposit according to the density (or size of DFT points) of the density and current Post-DFT phase tracking reference signal
In Pre-DFT.
As shown in Figure 8, it is assumed that modulation demodulation system is 64QAM at this time, that is, needs the phase tracking reference signal of big density,
If when obtaining value according to this modulation demodulation system grade and being configured with Post-DFT phase tracking reference signal, phase tracking reference
The density of signal is each time-domain symbol configuration phase tracking reference signal, and at this time according to the current Post-DFT phase of configuration
The points of the density size either discrete Fourier transform of position tracking reference signal, can determine Post-DFT phase at this time
Track reference signal density whether and the Post-DFT phase tracking reference signal that is obtained according to modulation demodulation system grade
Density is identical.If density (or the phase obtained according to the points of discrete Fourier transform of Post-DFT configuration at this time
Track the relevant parameter of density of reference signal) it is also that each time-domain symbol is configured with phase tracking reference signal, i.e., currently
The density of the Post-DFT phase tracking reference signal of configuration and the phase tracking reference obtained according to modulation demodulation system grade
Signal density is identical, then it is assumed that is only configured with Post-DFT phase tracking reference signal at this time.And if the Post- configured at this time
The density of DFT phase tracking reference signal is less than the Post-DFT phase tracking reference compareed according to modulation demodulation system
The density of signal may determine that there are Pre-DFT phase tracking reference signals, and Pre-dFT phase tracking reference signal at this time
Density equally can according to configuration Post-DFT phase tracking reference signal density and modulation demodulation system grade control
Relationship obtains.
Specific embodiment mode 1c: determine Pre-DFT's and Post-DFT according to modulation demodulation system grade and bandwidth
Service condition；
Modulation demodulation system grade and bandwidth will affect the density of phase tracking reference signal, i.e. modulation demodulation system grade
More perhaps Doppler frequency shift bring influences more serious mutually to make an uproar or Doppler frequency shift to preferably compensate high phase noise
It influences, the phase tracking reference signal density needed is bigger.And the increase of phase tracking reference signal density, it is meant that Pre-
DFT phase tracking reference signal and Post-DFT phase tracking reference signal bring influence also bigger.
The density of phase tracking reference signal if necessary is excessively high, at this time need to set simultaneously using Pre-DFT and
Post-DFT because simultaneously use both reference signals, can it is appropriate reduce phase tracking reference signal density, can
Effective high density phase tracking reference signal of alleviating influences system bring；If the density of phase tracking reference signal is not
Greatly, at this time using a kind of phase tracking reference signal relative to simultaneously using two kinds of phase tracking reference signals it is more simple,
Influence to system energy simultaneously will not be too big, therefore can basis and the relevant modulatedemodulate of phase tracking reference signal density
The grade of tune mode come confirm configure which kind of phase tracking reference signal；
The threshold value M1 for setting modulation demodulation system grade, when modulation demodulation system grade is less than M1, needed for thinking at this time
Phase tracking reference signal density it is lower, the inserted mode that a certain phase tracking reference signal is used alone will not be carried to single
Wave system system introduces biggish complexity and peak-to-average force ratio, when modulation demodulation system grade is greater than threshold value M1, modulation /demodulation side at this time
Formula is higher ranked, needs highdensity phase tracking reference signal, can use two kinds of phases of Pre-DFT and Post-DFT simultaneously
The inserted mode of reference signal is tracked to reduce and the close of Pre-DFT Post-DFT phase tracking reference signal is being used alone
Degree.
When determining configuration individually a certain phase tracking reference signal according to the grade of modulation demodulation system, can set
Bandwidth threshold B1.When bandwidth is larger, it is better than Post-DFT phase tracking reference signal using the effect of Pre-DFT；Work as band
When wide smaller, it is better than Pre-DFT using the effect of Post-DFT.Therefore when the bandwidth allocation of the terminal is less than threshold value B1,
It then selects to use Post-DFT phase tracking reference signal when single carrier transmission, and when the band of the terminal distribution is wider than threshold value B1
When, then it selects to use Pre-DFT phase tracking reference signal when single carrier transmission.
When determining configuration individually a certain phase tracking reference signal according to the grade of modulation demodulation system, can set
Only selection Pre-DFT phase tracking reference signal because compared with low-density phase tracking reference signal bring complexity and
Being finished discrete Fourier transform as phase tracking reference signal and be diffused into caused by entire frequency domain influences not to be very greatly, still
Post-DFT can introduce certain PAPR, so that the characteristic to single carrier damages, so can not select Post- at this time
DFT phase tracking reference signal.
When determining configuration individually a certain phase tracking reference signal according to the grade of modulation demodulation system, can set
One signaling for bit configures Pre-DFT phase tracking reference signal or Post-DFT phase tracking reference signal, root
Different instructions is sent according to the difference of actual scene, wherein it is envisaged that the scene process phase tracking reference signal sum number
Ability according to mixed complexity and the sensitivity that is influenced by PAPR.
Specific embodiment mode 2a: default simultaneously using Pre-DFT and Post-DFT phase tracking reference signal when, the two
Density be individually using a kind of phase tracking reference signal inserted mode density half either it is predefined certain
Density content；
It is to reduce individually using a certain using the purpose of Pre-DFT and Post-DFT phase tracking reference signal simultaneously
Kind phase tracking reference signal bring influences, so the inserted mode of both phase tracking reference signals ought be used simultaneously
When, it can choose the lower density of configuration.
Fig. 9 is the schematic diagram of the Density and distribution of phase tracking reference signal in the embodiment of the present invention, including 9a-9d, due to
The density of Pre-DFT Post-DFT phase tracking reference signal can be according to the grade and bandwidth of modulation demodulation system come really
It is fixed, so when using both methods simultaneously the density of the two can be defaulted as that a certain inserted mode is used alone
When density the half Density and distribution of a grade (or reduce), such as according to current relatively high modulation /demodulation side
When the grade of formula can determine exclusive use Pre-DFT, the density of phase tracking reference signal is set as every 4 sample values and places one
A phase tracking reference signal is as shown in 9a, and the density of phase tracking reference signal is set as each when Post-DFT is used alone
Time-domain symbol places a phase tracking reference signal as shown in 9c.At this time if only configuration individually a certain phase tracking reference
Signal, may complexity to system and PAPR etc. cause very big influence, so two methods of configuration use simultaneously, according to
The setting of default can set the density of Pre-DFT phase tracking reference signal to every 8 sample values and place a phase tracking
Reference signal sets every two symbol for the density of Post-DFT phase tracking reference signal and places a phase as shown in 9b
Reference signal is tracked as shown in 9d.
The density of two kinds of phase tracking reference signals of this default, which is not limited only to take, is separately configured a certain phase tracking ginseng
The half for examining the density of signal can be the configuration of any one default, can be and a certain phase tracking reference is separately configured
The a certain ratio value of the density of signal can be a kind of configuration for current modulation demodulation system grade, can be set to work as
The previous grade (or some preceding grade) of preceding modulation demodulation system, such as current modulation demodulation system grade is
256QAM can modulate the reference of Pre-DFT Post-DFT phase tracking reference signal at this time according to the setting of default
Demodulation mode grade is defaulted as being 64QAM, and both phase tracking reference signals configure suitably according to the 64QAM of default
Density.
Certainly it is different tune that the parameter of this default, which can be Pre-DFT and Post-DFT phase tracking reference signal,
Modulation demodulation system grade or different default density contents.
Specific embodiment mode 2b: setting signals while using Pre-DFT and Post-DFT phase tracking with reference to letter
Number when, the density distribution situation of the two；
Density by signaling phase tracking reference signal uses phase compared to the Pre-DFT and Post-DFT of default
With density rating when have more the expense of some signalings, but can be achieved on the flexible configuration of the density of above two mode；Such as
Fruit, which configures a signaling, can be the density rating ratio of two kinds of phase tracking reference signals, such as transmission signaling can recognize for 1
Density and distribution to be Pre-DFT phase tracking reference signal is higher than Post-DFT phase tracking reference signal density 1 etc.
Grade, this value is for example, not representing the meaning for being only limitted to above-mentioned expression；Two can be indicated respectively if configuring two signalings
The density rating of kind phase tracking reference signal, such as can will be obtained at this time according to modulation demodulation system grade at this time independent
The density for configuring a certain phase tracking reference signal gives Pre-DFT and Post-DFT phase tracking to refer to respectively according to this signaling
Signal configures different density, while this signaling is also possible to directly handle for one of modulation demodulation system grade, i.e.,
For Pre-DFT and Post-DFT phase tracking reference signal each signaling respectively indicate be allocated at this time Pre-DFT and
Variation of the modulation demodulation system grade of Post-DFT phase tracking reference signal relative to former modulation demodulation system grade, such as
The signaling for being allocated to Pre-DFT is 0, indicates the modulation /demodulation for being allocated to the density reference of Pre-DFT phase tracking reference signal
Mode grade is that current modulation demodulation system grade declines a grade, is allocated to the letter of Post-DFT phase tracking reference signal
Enabling is 1, indicates that the modulation demodulation system grade for being allocated to the density reference of Post-DFT phase tracking reference signal is current adjusts
Modulation demodulation system grade declines two grades.Assuming that modulation demodulation system grade at this time is that 256QAM can according to above-mentioned signaling
To judge that the modulation demodulation system grade for being allocated to Pre-DFT phase tracking reference signal as 64QAM, and is allocated to Post-DFT
The modulation demodulation system grade of phase tracking reference signal is 16QAM.
Due to different scenes may requirement to Pre-DFT or Post-DFT it is different, in different scenes
The different density rating of two kinds of phase tracking reference signals of middle configuration can preferably adapt to different scene demands.Such as right
The more sensitive uplink of peak-to-average force ratio can configure the Post-DFT phase tracking reference signal of low-density and relatively highly dense
The Pre-DFT phase tracking reference signal of degree, phase tracking reference signal and data due to caused by Pre-DFT are mixed into one
Rise, and it is poor for the processing of the data ability when, can with the higher Post-DFT phase tracking reference signal of configuration density,
The lower Pre-DFT phase tracking reference signal of configuration density simultaneously.
At the same time using in the scene of Pre-DFT and Post-DFT phase tracking reference signal, signaling can be set to match
Set the density of two kinds of phase tracking reference signals.When peak-to-average force ratio when being affected, can configure compared with low-density uplink
Post-DFT phase tracking reference signal configure relatively highdensity Pre-DFT phase tracking reference signal, Figure 10 simultaneously
It is to be configured in the embodiment of the present invention compared with the Post-DFT phase tracking reference signal of low-density while being configured relatively highdensity
The schematic diagram of Pre-DFT phase tracking reference signal, for Pre-DFT phase tracking ginseng is separately configured shown in the 9a such as Fig. 9
Examining signal is the case where every 4 sample values are inserted into a phase tracking reference signal, and as shown in Figure 10, Pre-DFT phase chases after at this time
Every 6 sample values of track reference signal configuration are inserted into phase tracking reference signal, while being configured with Post-DFT phase tracking
Reference signal is that every 4 symbols place a phase tracking reference signal.Every 4 sample values are reduced in this way is inserted into 1 phase
The reference signal processing complexity excessively high to system bring is tracked, while too high PAPR will not be introduced.
When for phase tracking reference signal and the slightly worse mixed data demodulation ability of data, can with configuration density compared with
Low Pre-DFT phase tracking reference signal, the according to demand density of appropriate adjustment Post-DFT phase tracking reference signal.Such as
Shown in Figure 11, Figure 11 is the schematic diagram of the lower Pre-DFT phase tracking reference signal of configuration density in the embodiment of the present invention,
Every 10 sample values of Pre-DFT phase tracking reference signal configuration are inserted into phase tracking reference signal, Post-DFT phase
Tracking reference signal configuration is that every 2 symbols are inserted into a phase tracking reference signal.
Embodiment 4
The present embodiment is for illustrating to configure PTRS's according to MCS grade and bandwidth and the orthogonal PTRS port number of configuration
Density:
The difference of MCS grade, communication system are influenced also different by phase noise, and when MCS is higher ranked, phase is made an uproar
The influence of sound is also bigger, needs to configure the phase tracking reference signal of higher time domain density at this time to mend to phase noise
It repays.The different frequency domain density for also influencing phase tracking reference signal of same bandwidth.Phase due to being allocated to user at present is made an uproar
The orthogonal port number of acoustic reference signal is different, so the orthogonal port number and configuration phase of phase tracking reference signal track ginseng
The configurable number of resources of the Effects of Density data of signal is examined, therefore also will affect the spectrum efficiency of communication system.
Assuming that higher MCS grade, such as the modulation system of 256QAM are configured with according to actual scene demand at this time, because
This needs to configure the phase tracking reference signal of time domain theoretical density at this time, it is assumed that configures 8 orthogonal phase tracking references at this time
Signal port, as shown in figure 12, Figure 12 are the signals that the embodiment of the present invention configures 8 orthogonal phase tracking reference signal ports
Figure.
It can be recognized from fig. 12 that PTRS has taken all OFDM symbols in the time domain at this time, and because it is being configured with 8 just
The port PTRS of friendship can be allocated to the money of data transmission so PTRS occupies 8 subcarriers on the PRB at this time at this time
Source number is very little, influences spectrum efficiency, so the port number of the orthogonal phase tracking reference signal of configuration also needs to consider
In the Density and distribution factor of phase tracking reference signal.
So other than needing to consider MCS grade and bandwidth, should also consider orthogonal PTRS when the density of configuration PTRS
Port number.As shown in figure 13, Figure 13 is showing for 8 orthogonal ports PTRS that the embodiment of the present invention is configured with the non-theoretical density of time domain
It is intended to, at this time due to being configured with 8 orthogonal ports PTRS, when configuring the time domain density of PTRS, it is entirely close is not reconfigured time domain
The PTRS of degree can have more resource distributions to hair if being configured to time domain every two OFDM symbol places a PTRS
Send data.So 4 or 8 are greater than if the port number of the phase tracking reference signal of system configuration is more at this time,
The time domain density of phase tracking reference signal cannot be configured to full bandwidth density at this time.
Bandwidth contributions the frequency domain density of phase tracking reference signal, when bandwidth is larger, phase tracking reference signal
Frequency domain density is smaller, and when the bandwidth is small, the frequency domain density of phase tracking reference signal is larger.It is false by taking lesser bandwidth as an example
If 4 PRB of work at this time, when MCS is higher ranked, with Time Bandwidth very little, phase tracking reference signal frequency domain density at this time compared with
Greatly, as shown in figure 14, Figure 14 is the schematic diagram that the frequency domain density of phase tracking reference signal in the embodiment of the present invention is 1/2, this
When phase tracking reference signal frequency domain density be 1/2, i.e. every two PRB is that port PTRS configures a subcarrier.
It can see from Figure 14 at this time, the RE number that can transmit data is very few, influences the spectrum efficiency of system, at this time may be used
To determine frequency domain density according to the orthogonal port number of MCS grade and PTRS and with frame, as shown in figure 15, Figure 15 is the present invention
Determine that frequency domain density is 1/4 schematic diagram in embodiment according to the orthogonal port number of MCS grade and PTRS and with frame, relatively
In Figure 14, time domain density is not configured to theoretical density at this time, configures a PTRS from original every 2 PRB with time-frequency domain density
Resource is reduced to every 4 PRB and configures a PTRS port resource, can significantly increase the efficiency of transmission of data.
Embodiment 5
The embodiments of the present invention also provide a kind of storage mediums.Optionally, in the present embodiment, above-mentioned storage medium can
To be arranged to store the program code for executing following steps:
S1, configuration phase track the selection rule of reference signal；
S2 selects K kind mapping mode, and generate phase tracking reference signal, wherein K is positive according to the selection rule
Integer.
Optionally, in the present embodiment, above-mentioned storage medium can include but is not limited to: USB flash disk, read-only memory (ROM,
Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or
The various media that can store program code such as CD.
Optionally, in the present embodiment, processor executes configuration phase according to program code stored in storage medium
Track the selection rule of reference signal；
Optionally, in the present embodiment, processor is executed according to according to program code stored in storage medium
Selection rule, selects K kind mapping mode, and generate phase tracking reference signal, wherein K is positive integer.
The present embodiment additionally provides a kind of configuration equipment of reference signal, comprising: memory, and with the memory coupling
The processor connect, the processor is for running program, wherein the program code of following steps is executed when described program is run:
S1, configuration phase track the selection rule of reference signal；
S2 selects K kind mapping mode, and generate phase tracking reference signal, wherein K is positive according to the selection rule
Integer.
Optionally, the specific example in the present embodiment can be with reference to described in above-described embodiment and optional embodiment
Example, details are not described herein for the present embodiment.
Obviously, those skilled in the art should be understood that each module of the above invention or each step can be with general
Computing device realize that they can be concentrated on a single computing device, or be distributed in multiple computing devices and formed
Network on, optionally, they can be realized with the program code that computing device can perform, it is thus possible to which they are stored
It is performed by computing device in the storage device, and in some cases, it can be to be different from shown in sequence execution herein
Out or description the step of, perhaps they are fabricated to each integrated circuit modules or by them multiple modules or
Step is fabricated to single integrated circuit module to realize.In this way, the present invention is not limited to any specific hardware and softwares to combine.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (21)
1. a kind of configuration method of reference signal characterized by comprising
Configuration phase tracks the selection rule of reference signal；
According to the selection rule, K kind mapping mode is selected, and generate phase tracking reference signal, wherein K is positive integer.
2. the method according to claim 1, wherein the mapping mode includes following one:
First mapping mode: phase tracking reference signal is added before data do discrete Fourier transform；
Second mapping mode: phase tracking reference signal is added after data do discrete Fourier transform；
Third mapping mode: while phase is added before data do discrete Fourier transform and after discrete Fourier transform
Position tracking reference signal.
3. the method according to claim 1, wherein described select rule for first signaling, wherein described
First signaling is high-level signaling or physical layer signaling.
4. the method according to claim 1, wherein described select rule for predefined rule, including with down toward
It is one of few: specified threshold, the specified threshold of bandwidth allocation of modulation demodulation system.
5. according to the method described in claim 4, it is characterized in that, selecting K kind mapping mode packet according to the selection rule
It includes:
The mapping of phase tracking reference signal is determined according to the size relation between at least one of and the specified threshold
Mode: the bandwidth of current modulation demodulation system, distribution.
6. according to the method described in claim 2, it is characterized in that, the third mapping mode further include: done in data discrete
The second phase that the first phase added before Fourier transformation is tracked reference signal and added after discrete Fourier transform
Track the predefined density of reference signal.
7. according to the method described in claim 6, it is characterized in that, the density passes through the second signal deployment, wherein described the
Two signalings include high-level signaling or physical layer signaling.
8. according to the method described in claim 6, it is characterized in that, the density is described one of in the following manner: point
Not Wei the first phase track reference signal and the second phase tracks the density of reference signal configuration, the first phase
Track the density content between reference signal and second phase tracking reference signal.
9. according to the method described in claim 6, it is characterized in that, the third mapping mode further include:
The first phase tracking reference signal and the second phase track the corresponding modulation demodulation system of reference signal
Grade.
10. according to the method described in claim 6, it is characterized in that, the third mapping mode further include:
The modulation /demodulation side of the first phase tracking reference signal and second phase tracking reference signal relative to configuration
The opposite variation grades of formula.
11. the method according to claim 1, wherein selecting a variety of mapping modes by the selection rule
Phase tracking reference signal includes:
In the orthogonal frequency division multiple access technical solution transmission for carrying out discrete Fourier transform spread spectrum, pass through the selection
Rule selects the phase tracking reference signal of a variety of mapping modes.
12. a kind of configuration method of reference signal characterized by comprising
According to the density of following information configuration phase tracking reference signal: the grade of modulation demodulation system, the bandwidth for distributing resource,
The orthogonal port number of the phase tracking reference signal of configuration.
13. according to the method for claim 12, which is characterized in that the method also includes:
The first threshold of the orthogonal port number of phase tracking reference signal is set, and the density of phase tracking reference signal is set
Second threshold.
14. according to the method for claim 13, which is characterized in that according to the orthogonal end of the phase tracking reference signal of configuration
The density of mouthful number configuration phase tracking reference signal includes:
When the orthogonal port number of the phase tracking reference signal of configuration is greater than the first threshold, configuration phase tracking reference
The time domain density of signal is less than the second threshold.
15. a kind of configuration device of reference signal characterized by comprising
Configuration module, the selection rule for configuration phase tracking reference signal；
Processing module, for selecting K kind mapping mode, and generate phase tracking reference signal according to the selection rule,
In, K is positive integer.
16. device according to claim 15, which is characterized in that the mapping mode includes following one:
First mapping mode: phase tracking reference signal is added before data do discrete Fourier transform；
Second mapping mode: phase tracking reference signal is added after data do discrete Fourier transform；
Third mapping mode: while phase is added before data do discrete Fourier transform and after discrete Fourier transform
Position tracking reference signal.
17. a kind of configuration device of reference signal characterized by comprising
Configuration module, for the density according to following information configuration phase tracking reference signal: the grade of modulation demodulation system is divided
The orthogonal port number of the phase tracking reference signal of bandwidth, configuration with resource.
18. device according to claim 17, which is characterized in that described device further include:
Setup module, for the first threshold of the orthogonal port number of phase tracking reference signal, and setting phase tracking is with reference to letter
Number density second threshold.
19. device according to claim 18, which is characterized in that the configuration module is referred to according to the phase tracking of configuration
Signal orthogonal port number configuration phase tracking reference signal density include:
When the orthogonal port number of the phase tracking reference signal of configuration is greater than the first threshold, configuration phase tracking reference
The time domain density of signal is less than the second threshold.
20. a kind of storage medium, which is characterized in that the storage medium includes the program of storage, wherein when described program is run
Method described in any one of perform claim requirement 1 to 14.
21. a kind of configuration equipment of reference signal characterized by comprising memory, and the place with memory coupling
Device is managed, the processor is for running program, wherein perform claim requires described in any one of 1 to 14 when described program is run
Method.
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