CN110149293A - A kind of OFDM baseband signal generation method and device - Google Patents
A kind of OFDM baseband signal generation method and device Download PDFInfo
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- CN110149293A CN110149293A CN201810147101.XA CN201810147101A CN110149293A CN 110149293 A CN110149293 A CN 110149293A CN 201810147101 A CN201810147101 A CN 201810147101A CN 110149293 A CN110149293 A CN 110149293A
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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
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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
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2657—Carrier synchronisation
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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
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Abstract
The embodiment of the present invention provides a kind of OFDM baseband signal generation method and device, is related to field of communication technology, there are phase offsets to solve the problems, such as existing OFDM baseband signal.This method comprises: according to first frequency interval and cell frequency interval, or, the subcarrier spacing at first frequency interval and SSB, determines the frequency offset of the first OFDM baseband signal；Wherein, it is divided into first subcarrier of SSB between first frequency and transmits the frequency interval of first sub- intercarrier of first public resource block of the SSB；SSB is mapped in M OFDM symbol, and the corresponding OFDM baseband signal of an OFDM symbol, the first OFDM baseband signal is an OFDM baseband signal corresponding with the first OFDM symbol in M OFDM baseband signal；According to the data symbol of the resource particle carrying on frequency offset and the first OFDM symbol, the first OFDM baseband signal is generated.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of orthogonal frequency division multiplexing (Orthogonal Frequency
Division Multiplexing, OFDM) baseband signal generation method and device.
Background technique
Currently, in 5G NR system, synchronization signal block (Synchronisation signal&PBCH Block, SSB)
Subcarrier spacing (Subcarrier Spacing, SCS) and Physical Downlink Control Channel (Physical Downlink
Control Channel, PDCCH)/Physical Downlink Shared Channel (Physical Downlink Shared Channel,
PDSCH SCS) supports following combination: { SSB SCS, PDCCH/PDSCH SCS }={ 15,15 }, and { 15,30 }, 30,
15 }, { 30,30 }, { 120,60 }, { 120,120 }, { 240,60 }, { 240,120 } } kHz.Wherein, { 15,15 }, { 15,30 },
{ 30,15 }, { 30,30 } } kHz combination, be less than the combination that can be used in the case of 6GHz；{ 120,60 }, { 120,120 },
{ 240,60 }, { 240,120 } } kHz combination, be above the combination that can be used in the case of 6GHz.
In the prior art, the starting point of first subcarrier of the SSB in a resource block (Resource Block, RB)
It can not be the boundary of the RB, the i.e. son of first public resource block (Common RB) of the subcarrier 0 and transmission of the SSB SSB
There are frequency intervals between carrier wave 0.Wherein, when being lower than 6GHz, the digit of the frequency interval is 15kHz, 30,
15 }, { 30,30 } } kHz combination under, which may not be the integral multiple of the subcarrier spacing of SSB；It is being higher than 6GHz
In the case of, the digit of the frequency interval is the subcarrier spacing of PDCCH/PDSCH, { 120,60 }, { 240,60 },
{ 240,120 } } kHz combination under, which may not be the integral multiple of the subcarrier spacing of SSB.
However, the subcarrier 0 and transmission for not accounting for SSB should due in existing OFDM baseband signal generating process
The frequency interval of the subcarrier 0 of first Common RB of SSB may not be the integral multiple of SSB subcarrier spacing, so as to cause
There may be phase offset, i.e. SSB not to be sent in correct frequency for the OFDM baseband signal of generation.
Summary of the invention
The embodiment of the present invention provides a kind of OFDM baseband signal generation method and device, to solve existing OFDM base band letter
Number there are problems that phase offset.
In order to solve the above-mentioned technical problem, the present invention is implemented as follows:
In a first aspect, the embodiment of the invention provides a kind of OFDM baseband signal generation methods, this method comprises:
According to first frequency interval and cell frequency interval, or, the son at the first frequency interval and synchronization signal block SSB
Carrier wave interval determines the frequency offset of the first OFDM baseband signal；
Wherein, it is divided into first subcarrier of SSB between the first frequency and transmits first public resource of the SSB
The frequency interval of first sub- intercarrier of block；The SSB is mapped in M OFDM symbol, and an OFDM symbol is one corresponding
OFDM baseband signal, the first OFDM baseband signal are one corresponding with the first OFDM symbol in M OFDM baseband signal
OFDM baseband signal；
According to the data symbol of the resource particle carrying on the frequency offset and first OFDM symbol, institute is generated
State the first OFDM baseband signal.
Second aspect, the embodiment of the invention provides a kind of OFDM baseband signal generating means, comprising:
Determining module, for according to first frequency interval and cell frequency interval, or, the first frequency interval with it is synchronous
The subcarrier spacing of block SSB determines the frequency offset of the first OFDM baseband signal；
Wherein, it is divided into first subcarrier of SSB between the first frequency and transmits first public resource of the SSB
The frequency interval of first sub- intercarrier of block；The SSB is mapped in M OFDM symbol, and an OFDM symbol is one corresponding
OFDM baseband signal, the first OFDM baseband signal are one corresponding with the first OFDM symbol in M OFDM baseband signal
OFDM baseband signal；
Generation module, the frequency offset and first OFDM symbol for being determined according to the determining module
Resource particle carrying data symbol, generate the first OFDM baseband signal.
The third aspect, the embodiment of the invention provides a kind of OFDM baseband signal generating means, including processor, memory
And it is stored in the computer program that can be run on the memory and on the processor, the computer program is by the place
Manage the step of realizing OFDM baseband signal generation method as described in relation to the first aspect when device executes.
Fourth aspect, the embodiment of the present invention provide a kind of computer readable storage medium, the computer-readable storage medium
Computer program is stored in matter, and such as above-mentioned OFDM baseband signal generation method is realized when the computer program is executed by processor
The step of.
In embodiments of the present invention, in first subcarrier for getting SSB and first public resource for transmitting the SSB
Behind the first frequency interval of first sub- intercarrier of block, can according to the first frequency interval and cell frequency interval, alternatively,
The subcarrier spacing at first frequency interval and SSB determines the frequency offset of the first OFDM baseband signal, since the frequency is inclined
Shifting amount can embody the phase offset that the first OFDM baseband signal will will appear, and therefore, the embodiment of the present invention can be according to this
The data symbol of resource particle carrying in frequency offset the first OFDM symbol corresponding with the first OFDM baseband signal, it is raw
At the first OFDM baseband signal, phase offset occurs so as to avoid the first OFDM baseband signal, that is, avoids SSB not just
True frequency location is sent.
Detailed description of the invention
Fig. 1 is a kind of possible structural schematic diagram of communication system involved in the embodiment of the present invention；
Fig. 2 is a kind of one of flow diagram of OFDM baseband signal generation method provided in an embodiment of the present invention；
Fig. 3 is the two of a kind of flow diagram of OFDM baseband signal generation method provided in an embodiment of the present invention；
Fig. 4 be subcarrier schematic diagram applied by a kind of OFDM baseband signal generation method provided in an embodiment of the present invention it
One；
Fig. 5 be subcarrier schematic diagram applied by a kind of OFDM baseband signal generation method provided in an embodiment of the present invention it
Two；
Fig. 6 is the three of a kind of flow diagram of OFDM baseband signal generation method provided in an embodiment of the present invention；
Fig. 7 be subcarrier schematic diagram applied by a kind of OFDM baseband signal generation method provided in an embodiment of the present invention it
Three；
Fig. 8 be subcarrier schematic diagram applied by a kind of OFDM baseband signal generation method provided in an embodiment of the present invention it
Four；
Fig. 9 be subcarrier schematic diagram applied by a kind of OFDM baseband signal generation method provided in an embodiment of the present invention it
Five；
Figure 10 is subcarrier schematic diagram applied by a kind of OFDM baseband signal generation method provided in an embodiment of the present invention
Six；
Figure 11 is the four of a kind of flow diagram of OFDM baseband signal generation method provided in an embodiment of the present invention；
Figure 12 is a kind of one of structural schematic diagram of OFDM baseband signal generating means provided in an embodiment of the present invention；
Figure 13 is a kind of second structural representation of OFDM baseband signal generating means provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
Technical solution provided by the invention can be applied to various communication systems, for example, 5G communication system, the following evolution system
System or a variety of communication emerging systems etc..It may include plurality of application scenes, for example, Machine To Machine (Machine
ToMachine, M2M), D2M, macro micro- communication, enhanced mobile Internet (enhance Mobile Broadband, eMBB),
Ultrahigh reliability communicated with ultralow time delay (ultra Reliable&Low Latency Communication, uRLLC) and
The scenes such as magnanimity Internet of Things Network Communication (Massive Machine Type Communication, mMTC).These scenes include but
It is not limited to: communication between communication or the network equipment and the network equipment or the network equipment and terminal room between terminal and terminal
The scenes such as communication in.The embodiment of the present invention can be applied to logical with the network equipment in 5G communication system and between terminal
Letter or the communication between terminal and terminal or the communication between the network equipment and the network equipment.
Fig. 1 shows a kind of possible structural schematic diagram of communication system involved in the embodiment of the present invention.Such as Fig. 1 institute
Show, which includes sending ending equipment 100 and receiving device 200.
Wherein, sending ending equipment 100 can be the network equipment, and receiving device 200 can be terminal device.It is exemplary
, the sending ending equipment 100 in the embodiment of the present invention can carry out OFDM baseband signal after generating OFDM baseband signal
It is converted to carrier frequency, is sent to receiving device 200.
The above-mentioned network equipment 100 can be base station, equipment of the core network, transmitting receiving node (Transmission and
Reception Point, TRP), relay station or access point etc..The network equipment 100 can be global system for mobile communications
(Global System for Mobile communication, GSM) or CDMA (Code Division Multiple
Access, CDMA) base transceiver station (Base Transceiver Station, BTS) in network, it is also possible to broadband code
Divide the NB (NodeB) in multiple access (Wideband Code Division Multiple Access, WCDMA), can also be LTE
In eNB or eNodeB (evolutional NodeB).The network equipment 100 can also be cloud Radio Access Network (Cloud
Radio Access Network, CRAN) wireless controller under scene.The network equipment 100 can also be in 5G communication system
The network equipment or future evolution network in the network equipment.Right word is not construed as limiting the invention.
Terminal 200 can may be catv terminal for wireless terminal, which can be directed to user and provide language
The equipment of sound and/or other business datum connectivity has the handheld device of wireless communication function, calculates equipment or be connected to nothing
Other processing equipments, mobile unit, wearable device, the terminal in future 5G network or the following evolution of line modem
PLMN network in terminal etc..Wireless terminal can be through wireless access network (Radio Access Network, RAN) and one
Or multiple cores net is communicated, wireless terminal can be mobile terminal, such as mobile phone (or being " honeycomb " phone) and tool
There is the computer of mobile terminal, for example, it may be portable, pocket, hand-held, built-in computer or vehicle-mounted movement
Device, they exchange language and/or data and personal communication service (Personal with wireless access network
Communication Service, PCS) phone, wireless phone, Session initiation Protocol (Session Initiation
Protocol, SIP) phone, wireless local loop (Wireless Local Loop, WLL) stand, personal digital assistant
Equipment such as (Personal Digital Assistant, PDA), wireless terminal may be mobile device, user equipment (User
Equipment, UE), UE terminal, access terminal, wireless telecom equipment, terminal unit, terminal station, movement station (Mobile
Station), mobile station (Mobile), distant station (Remote Station), remote station, remote terminal (Remote
Terminal), subscriber unit (Subscriber Unit), subscriber station (Subscriber Station), user agent (User
Agent), terminal installation etc..
Part term involved in the present invention is explained below, is understood with helping reader:
1, subcarrier spacing SCS (subcarrier spacing)
In LTE/LTE-A, SCS is fixed 15kHz.And SCS will be set as 15* (2^n) kHz in NR system,
Middle n can take negative.That is, SCS can be set in NR system: 3.75kHz, 7.5kHz, 15kHz, 30kHz,
60kHz, 120kHz etc..
Currently, the son of synchronization signal block (Synchronisation signal block, SSB) carries in 5G NR system
Wave spacing (Subcarrier Spacing, SCS) and Physical Downlink Control Channel (Physical Downlink Control
Channel, PDCCH)/Physical Downlink Shared Channel (Physical Downlink Shared Channel, PDSCH) SCS
Mainly support following combination: { SSB SCS, PDCCH/PDSCH SCS }={ 15,15 }, { 15,30 }, { 30,15 }, 30,
30 }, { 120,60 }, { 120,120 }, { 240,60 }, { 240,120 } } kHz.
Wherein, the combination of { { 15,15 }, { 15,30 }, { 30,15 }, { 30,30 } } kHz, being less than in the case of 6GHz can be with
The combination used；The combination of { { 120,60 }, { 120,120 }, { 240,60 }, { 240,120 } } kHz, is above in the case of 6GHz
The combination that can be used.
2, (SSB is alternatively referred to as synchronization signal block (Synchronisation signal&PBCH Block, SSB): SS
block)
One SSB occupies continuous 4 OFDM symbols in time, occupies continuous 20*12 subcarrier on frequency domain,
In include primary synchronization signal (Primary Syncronization Signal, PSS), secondary synchronization signal (Secondary
Syncronization Signal, SSS) and physical broadcast signal (Physical Broadcast Channel, PBCH),
PBCH-DMRS.In addition, the starting point of first subcarrier of SSB can not be transmit the SSB first Common RB it is (public
Resource block) boundary, i.e. the first of SSB subcarrier can carry with first son for first Common RB for transmitting the SSB
There are frequency intervals between wave.
The case where for being lower than 6GHz, the digit (SCS unit) of the frequency interval are 15kHz, the subcarrier 0 of SSB
It is indicated with the number of sub carrier wave of the offset of subcarrier 0 for first Common RB for transmitting the SSB by high-level signaling, can be 0,
1,2 ..., 23 } (may be odd number subcarrier), specifically, under the combination of { { 30,15 }, { 30,30 } } kHz, the frequency
Rate interval may not be the integral multiple of the subcarrier spacing of SSB.The case where for being higher than 6GHz, the digit of the frequency interval
(SCS unit) is the subcarrier spacing of the PDCCH/PDSCH indicated by high-level signaling, the subcarrier 0 of SSB and transmits the SSB's
The number of sub carrier wave that the subcarrier 0 of first Common RB deviates is indicated by high-level signaling, can be { 0,1,2 ..., 11 }
(may be odd number subcarrier), specifically, under the combination of { { 120,60 }, { 240,60 }, { 240,120 } } kHz, the frequency
Rate interval may not be the integral multiple of the subcarrier spacing of SSB.
3, the generation of OFDM baseband signal
Illustratively, by taking downlink OFDM baseband signal generating process as an example, lOFDM time domain baseband signals in a subframeGeneration formula it is as follows:
Wherein, p is the port numbering of signal, and t is the sampling time, and the subcarrier spacing that μ is SSB configures, and Δ f indicates that son carries
Wave spacing is configured to subcarrier spacing when μ, and k is subcarrier number,It is indicated by high-level signaling k0,For indicating band
RB number in wide resource,For indicating the subcarrier number in a RB,For indicating to configure in subcarrier spacing
When for μ, the circulating prefix-length of first of OFDM symbol.T in above-mentioned formula 1c=1/ (Δ fmax·Nf), wherein Δ fmax=
480·103Hz, Nf=4096.The value range of t are as follows: To correspond between subcarrier on the p of port
First of OFDM symbol when configuring μ, the symbol on k-th of subcarrier.
It is as follows for the start time point of first of OFDM in the case where subcarrier spacing is configured to μ:
Wherein, each corresponding subcarrier spacing of μ value is as shown in table 1 below:
| μ | Δ f=2μ·15 |
| 0 | 15 |
| 1 | 30 |
| 2 | 60 |
| 3 | 120 |
| 4 | 240 |
| …… | …… |
Table 1
Due in existing OFDM baseband signal generating process, frequency domain symbolBe fromSon in a subcarrier
Carrier wave 0 arrives subcarrierTherefore, if the son that the starting point interval of the starting point of some subcarrier and subcarrier 0 is not SSB carries
The integral multiple of wave spacing can then have frequency shift (FS), which is mainly reflected in letter in the generating process of OFDM baseband signal
Number phase rotation, i.e. phase when generating baseband signal of subcarrier in SSB is simultaneously incorrect, so that SSB does not exist
Correct frequency location is sent.Therefore, based on existing OFDM baseband signal generating process OFDM base band letter generated
Number phase compared with the phase of correct OFDM baseband signal, there are certain phase deviations.
4, other terms
The terms "and/or", only a kind of incidence relation for describing affiliated partner, indicates that there may be three kinds of passes
System, for example, A and/or B, can indicate: individualism A exists simultaneously A and B, these three situations of individualism B.In addition, herein
Middle character "/" typicallys represent the relationship that forward-backward correlation object is a kind of "or"；In formula, character "/" indicates forward-backward correlation
Object is the relationship of a kind of " being divided by ".If explanation is not added, " multiple " herein refer to two or more.
For the ease of clearly describing the technical solution of the embodiment of the present invention, in an embodiment of the present invention, use " the
One ", the printed words such as " second " distinguish function or the essentially identical identical entry of effect or similar item, and those skilled in the art can
To understand that the printed words such as " first ", " second " are not defined quantity and execution order.
In the embodiment of the present invention, " illustrative " or " such as " etc. words for indicate make example, illustration or explanation.This hair
Be described as in bright embodiment " illustrative " or " such as " any embodiment or design scheme be not necessarily to be construed as than it
Its embodiment or design scheme more preferably or more advantage.Specifically, use " illustrative " or " such as " etc. words be intended to
Related notion is presented in specific ways.In embodiments of the present invention, unless otherwise indicated, the meaning of " plurality " is refer to two or
It is more than two.
The executing subject of OFDM baseband signal generation method provided in an embodiment of the present invention can be raw for OFDM baseband signal
At device, which can be sending ending equipment, or can be realized in the sending ending equipment
The functional module and/or functional entity of the OFDM baseband signal generation method, specifically can be determining according to actual use demand,
The embodiment of the present invention is not construed as limiting.It is raw to OFDM baseband signal provided in an embodiment of the present invention below by taking sending ending equipment as an example
Illustratively illustrated at method.
Embodiment one:
Fig. 2 shows a kind of flow diagram of OFDM baseband signal generation method provided in an embodiment of the present invention, such as Fig. 2
Shown, which may include:
S201, sending ending equipment determine the first OFDM baseband signal according to first frequency interval and cell frequency interval
Frequency offset.
In embodiments of the present invention, first subcarrier (i.e. subcarrier 0) and the transmission of SSB are divided between above-mentioned first frequency
Frequency interval between first subcarrier (i.e. subcarrier 0) of first public resource block of the SSB.Certainly, the first frequency
Interval or SSB the first subcarrier and transmit the SSB first public resource block the second subcarrier between frequency
Interval, above-mentioned first subcarrier are identical as the number of the second subcarrier.
In embodiments of the present invention, above-mentioned SSB is mapped in M OFDM symbol, the corresponding OFDM of an OFDM symbol
Baseband signal.Above-mentioned first OFDM baseband signal is an OFDM corresponding with the first OFDM symbol in M OFDM baseband signal
Baseband signal, i.e., the first above-mentioned OFDM baseband signal is any OFDM baseband signal in M OFDM baseband signal, above-mentioned
First OFDM symbol is the corresponding OFDM symbol of the first OFDM baseband signal.
In embodiments of the present invention, above-mentioned frequency offset can be the specific deviant of frequency, i.e., is single with kHZ
Position, is also possible to the frequency shift (FS) weight for characterizing frequency shift (FS) degree.
Illustratively, when above-mentioned frequency offset is frequency shift (FS) weight, OFDM baseband signal specifically needs to compensate
Frequency can be multiplied to obtain with the subcarrier spacing of SSB according to the frequency shift (FS) weight.For example, it is assumed that frequency shift (FS) weight
Subcarrier spacing for -0.5, SSB is 30kHZ, then specifically needing the frequency compensated is -15kHz (- 0.5*30kHz).
The data symbols that S202, sending ending equipment are carried according to the resource particle on frequency offset and the first OFDM symbol
Number, generate the first OFDM baseband signal.
1, the determination process (i.e. S201) of the frequency offset of the first OFDM baseband signal is as follows:
In embodiments of the present invention, S201 can at least be realized by following two implementation.
The first possible implementation:
Optionally, as shown in figure 3, in embodiments of the present invention, S201 specifically comprises the following steps:
S201a1, sending ending equipment determine the first ratio.
S201a2, sending ending equipment determine the frequency offset of the first OFDM baseband signal according to the first ratio.
In embodiments of the present invention, above-mentioned first ratio is the ratio at first frequency interval and cell frequency compartment.
Further alternative, in embodiments of the present invention, S201a2 specifically comprises the following steps:
Step A, sending ending equipment determines the frequency of the first OFDM baseband signal according to the first ratio and the first corresponding relationship
Offset.
In embodiments of the present invention, above-mentioned first corresponding relationship includes: the first ratio pass corresponding between frequency offset
System.
In a kind of example, above-mentioned first corresponding relationship can be the first mapping table, in first mapping table
Store the corresponding relationship between ratio and frequency offset, wherein it include first ratio at least one above-mentioned ratio, it is above-mentioned
At least one frequency offset include the first OFDM baseband signal frequency offset.Illustratively, above-mentioned first pair
Answer relation table as shown in table 2 below:
| Ratio | Frequency offset |
| Odd number | -0.5 |
| Even number | 0 |
Table 2
For example, being divided into the frequency interval of 15KHZ between cell frequency under the scene lower than 6GHz.
Example 1: as { SSB SCS, PDCCH/PDSCH SCS }={ 30,15 } kHz, k1∈{-0.5,0}.If the son of SSB
Carrier wave 0 and transmit the SSB first public resource block subcarrier 0 between frequency interval be odd number 15kHz subcarrier
When, k1=-0.5, otherwise k1=0.
Example 2: as { SSB SCS, PDCCH/PDSCH SCS }={ 30,30 } kHz, k1∈{-0.5,0}.If SSB's
Subcarrier 0 and transmit the SSB first public resource block subcarrier 0 between frequency interval be odd number 15kHz son carry
When wave, k1=-0.5, otherwise k1=0.
For example, being divided into the subcarrier spacing of PDCCH/PDSCH between cell frequency under the scene higher than 6GHz.
Example 3: as { SSB SCS, PDCCH/PDSCH SCS }={ 120,60 } kHz, k1∈{-0.5,0}.If SSB's
Subcarrier 0 and transmit the SSB first public resource block subcarrier 0 between frequency interval be odd number 60kHz son carry
When wave, k1=-0.5, otherwise k1=0.
Example 4: as { SSB SCS, PDCCH/PDSCH SCS }={ 240,120 } kHz, k1∈{-0.5,0}.If SSB
Subcarrier 0 and transmit the SSB first public resource block subcarrier 0 between frequency interval be odd number 120kHz son
When carrier wave, k1=-0.5, otherwise k1=0.
Further citing, as { SSB SCS, PDCCH/PDSCH SCS }={ 30,15 } kHz,
As shown in figure 4, if the subcarrier 0 of SSB and transmit the SSB first public resource block subcarrier 0 between phase
Poor 15kHz, the initial position for resulting in each subcarrier of SSB reduce 15kHz, then in the process for generating OFDM baseband signal
In, need to compensate the corresponding frequency offset k of frequency departure of 15kHz1Corresponding phase deviation；As shown in figure 5, if SSB
Subcarrier 0 and transmit the SSB first public resource block subcarrier 0 between difference 30kHz, due to the subcarrier of SSB
So that although the initial position of each subcarrier of SSB reduces 30kHz, but there is not phase deviation in 30kHz.
Second of possible implementation:
Optionally, as shown in fig. 6, in embodiments of the present invention, S201 specifically comprises the following steps:
S201b1, sending ending equipment determine the first ratio and the second ratio.
S201b2, sending ending equipment carry out after complementation operation obtained remainder and the to the second ratio according to the first ratio
Two ratios, determine frequency offset.
In embodiments of the present invention, above-mentioned first ratio is the ratio at first frequency interval and cell frequency compartment, on
State the ratio of subcarrier spacing and cell frequency interval that the second ratio is SSB.
Further alternative, in embodiments of the present invention, above-mentioned S201b2 can at least pass through following two realization side
Formula is realized:
1), the first implementation
Illustratively, S201b2 specifically comprises the following steps:
Step B, sending ending equipment carries out the remainder obtained after complementation operation, the second ratio to the second ratio according to the first ratio
Value and the second corresponding relationship, determine frequency offset.
In embodiments of the present invention, above-mentioned second corresponding relationship includes: that the first ratio carries out complementation operation to the second ratio
Corresponding relationship between the remainder, the second ratio and the frequency offset that obtain afterwards.
In a kind of example, above-mentioned second corresponding relationship can be the second mapping table, in first mapping table
Store at least one remainder and at least one frequency offset, wherein the corresponding frequency offset of a remainder.It is exemplary
, the second above-mentioned mapping table can be as shown in table 3 below:
Table 3
Example 5: when { SSB SCS, PDCCH/PDSCH SCS }={ 30,15 } { 30,30 } { 120,60 } 240kHz,
120kHz } kHz when, corresponding second ratio is 2, k1∈{-0.5,0}.If the subcarrier 0 of SSB and transmitting the SSB
When frequency interval between the subcarrier 0 of first public resource block is X cell frequency interval, if mod (X, 2)=1, k1
=-0.5, the i.e. subcarrier spacing of some subcarrier or resource particle (resource element) before the subcarrier 0 of SSB
For the half of SSB subcarrier spacing；If mod (X, 2)=0, k1=0.
Example 6: as { SSB SCS, PDCCH/PDSCH SCS }={ 240,60 } kHz, k1∈{-0.75,-0.5,-0.25,
0 }, corresponding second ratio is 4, if the subcarrier 0 of first public resource block of the subcarrier 0 of SSB and the transmission SSB
Between frequency interval be X cell frequency interval when, if mod (X, 4)=1, k1=-0.75；If mod (X, 4)=2, k1
=-0.5；If mod (X, 4)=3, k1=-0.25；If mod (X, 4)=0, k1=0.
2), second of implementation
Illustratively, S201b2 specifically comprises the following steps:
Step C, sending ending equipment carries out the remainder obtained after complementation operation, the second ratio to the second ratio according to the first ratio
Value and the first predetermined formula calculate frequency offset.
Wherein, the first above-mentioned predetermined formula are as follows:M is above-mentioned remainder, and N is above-mentioned second ratio, and K is
Said frequencies offset, M are not equal to 0.It should be noted that the first above-mentioned predetermined formula is only a kind of example, practical application
In, which may exist various deformation.
It should be noted that corresponding K is 0 when remainder M is 0.
Example 7: as { SSB SCS, PDCCH/PDSCH SCS }={ 30,15 } { 30,30 } { 120,60 } { 240,120 } kHz
When, corresponding second ratio is 2.If the subcarrier 0 of SSB and the sub of first public resource block for transmitting the SSB carry
When frequency interval between wave 0 is X cell frequency interval, mod (X, 2)=1,Mod (X, 2)=0,
k1=0.
Example 8: as { SSB SCS, PDCCH/PDSCH SCS }={ 240,60 } kHz, k1∈{-0.75,-0.5,-0.25,
0 }, corresponding second ratio is 4, if the subcarrier 0 of first public resource block of the subcarrier 0 of SSB and the transmission SSB
Between frequency interval be X cell frequency interval when, if mod (X, 4)=1,If mod (X,
4)=2,If mod (X, 4)=3,If mod (X, 4)=0,
k1=0.
It is further illustrated, as { SSB SCS, PDCCH/PDSCH SCS }={ 240,60 } kHz.
As shown in fig. 7, the subcarrier 0 of SSB and transmit the SSB first public resource block subcarrier 0 between difference
The subcarrier spacing of some subcarrier or resource particle before the subcarrier 0 of 60kHz, i.e. SSB is 60kHz, i.e. X=1, mod
(Isosorbide-5-Nitrae)=1, k1=-0.75, since the initial position of each subcarrier of SSB reduces 180kHz, then generating OFDM base band
During signal, need to supply the frequency departure of the subcarrier spacing of a SSB, i.e. compensation -180kHz (- 0.75*
Phase deviation corresponding to 240kHz).
As shown in figure 8, the subcarrier 0 of SSB and transmit the SSB first public resource block subcarrier 0 between difference
The subcarrier spacing of some subcarrier or resource particle before the subcarrier 0 of 120kHz, i.e. SSB be 120kHz, i.e. X=2,
Mod (2,4)=2, k1=-0.5, since the initial position of each subcarrier of SSB reduces 120kHz, then generating OFDM base
During band signal, need to supply the frequency departure of the subcarrier spacing of a SSB, i.e. compensation -120kHz (- 0.5*
Phase deviation corresponding to 240kHz).
As shown in figure 9, the subcarrier 0 of SSB and transmit the SSB first public resource block subcarrier 0 between difference
The subcarrier spacing of some subcarrier or resource particle before the subcarrier 0 of 180kHz, i.e. SSB be 180kHz, i.e. X=3,
Mod (3,4)=1, k1=-0.25, since the initial position of each subcarrier of SSB reduces 60kHz, then generating OFDM base
During band signal, need to supply the frequency departure of the subcarrier spacing of a SSB, i.e. compensation -60kHz (- 0.25*
Phase deviation corresponding to 240kHz).
As shown in Figure 10, the subcarrier 0 of SSB and transmit the SSB first public resource block subcarrier 0 between difference
240kHz, i.e. X=4, mod (4,4)=0, k1=0, since the subcarrier spacing of SSB is 240kHz, be with subcarrier spacing
The subcarrier of the Common RB of 240kHz is alignment, so phase does not shift, also with regard to without carrying out phase offset.
It should be noted that in embodiments of the present invention, being obtained after the first ratio carries out complementation operation to the second ratio
Remainder when not being 0, it is assumed that the son of the subcarrier spacing before the subcarrier 0 of SSB there are a subcarrier spacing less than SSB
Carrier wave or resource particle, and the complex values of the subcarrier corresponding resource particle can be set as to 0 carry out OFDM baseband signal generation；
Alternatively, directly thinking that this is less than the subcarrier of the subcarrier spacing of SSB is an invalid subcarrier, in OFDM baseband signal
In generation, it is not construed as carrying out a resource particle of all resource particles of OFDM baseband signal generation, in the son of SSB
The life that the resource particle that a complex values are 0 carries out OFDM baseband signal can be supplemented after the corresponding resource particle of carrier wave 239
At then the corresponding resource particle number of each subcarrier in SSB then reduces 1 compared to method described above, in this way
During generating OFDM baseband signal, need k calculated above1Add 1 on the basis of value again, and using the numerical value as frequency
Rate offset compensates；Or a new resource grid (resource grid) is defined, this resource grid is by SSB's
When subcarrier spacing is divided, the subcarrier boundary in resource grid is aligned with the subcarrier of SSB, is thus not necessarily to
OFDM is generated in formula process, and the resource particle that a complex values can be 0, Huo Zhe are supplemented before the subcarrier 0 of SSB
The resource particle that a complex values can be 0 is supplemented after the subcarrier 239 of SSB.
2, OFDM baseband signal generating process (S202) is as follows:
Optionally, in embodiments of the present invention, S202 can at least be realized by following three kinds of modes:
Mode 1: sending ending equipment can generate formula (i.e. formula 1) and first according to existing OFDM baseband signal
The data symbol of resource particle carrying in OFDM symbol, calculates initial first OFDM baseband signal, then inclined according to frequency
Shifting amount carries out corresponding phase compensation to initial first OFDM baseband signal, obtains the corresponding first OFDM base of the first OFDM symbol
Band signal.
Mode 2: the data that sending ending equipment can be carried according to the resource particle in frequency offset, the first OFDM symbol
Symbol and the first OFDM baseband signal generate formula, directly calculate the corresponding first OFDM base band letter of the first OFDM symbol
Number.
Illustratively, it is provided in an embodiment of the present invention improved that the first above-mentioned OFDM baseband signal, which generates formula,
OFDM baseband signal generates formula.The first above-mentioned OFDM baseband signal generates formula can be as follows shown in formula 3:
Formula (i.e. formula 1) is generated compared to existing OFDM baseband signal, the first OFDM provided in an embodiment of the present invention
Baseband signal generates in formula and introduces k1Value, k1For frequency offset.
Mode 3: sending ending equipment determines the phase pushing figure of the first OFDM baseband signal according to frequency offset, then,
According to the data symbol of the resource particle carrying on the phase pushing figure and the first OFDM symbol, it is corresponding to generate the first OFDM symbol
The first OFDM baseband signal.
In a kind of example, sending ending equipment is after the phase pushing figure for calculating the first OFDM baseband signal, Bian Kegen
It is generated according to the data symbol and the 2nd OFDM baseband signal of the resource particle carrying in the phase pushing figure, the first OFDM symbol
Formula generates the first OFDM baseband signal.
Illustratively, the 2nd above-mentioned OFDM baseband signal generation formula can be as follows shown in formula 4:
Wherein, formula (i.e. formula 1) is generated compared to existing OFDM baseband signal, provided in an embodiment of the present invention second
OFDM baseband signal generates the value that φ is introduced in formula, and above-mentioned φ is phase pushing figure,k1For frequency
Rate offset, φ are used as the compensation that frequency offset is carried out to the symbol of the carrying in the resource particle in SSB.
It should be noted that since OFDM baseband signal generates formula there are various deformation, above-mentioned formula 3 and public
Formula 4 is only a kind of example that OFDM baseband signal generates formula, and it is real that above-mentioned formula 3 and formula 4 can not become the present invention
Apply the limitation that OFDM baseband signal mentioned by example generates formula.
OFDM baseband signal generation method provided in an embodiment of the present invention in first subcarrier for getting SSB and passes
It, can be according to the first frequency behind the first frequency interval of first sub- intercarrier of first public resource block of the defeated SSB
Interval and cell frequency interval, determine the frequency offset of the first OFDM baseband signal, since the frequency offset being capable of body
Reveal the phase offset that the first OFDM baseband signal will will appear, therefore, the embodiment of the present invention can be according to the frequency offset
The data symbol of resource particle carrying in the first OFDM symbol corresponding with the first OFDM baseband signal, generates the first OFDM
Baseband signal occurs phase offset so as to avoid the first OFDM baseband signal, that is, avoids SSB not in correct frequency position
It sets and is sent.
Embodiment two:
Figure 11 shows a kind of flow diagram of OFDM baseband signal generation method provided in an embodiment of the present invention, such as schemes
Shown in 11, which may include:
S301, sending ending equipment determine the first OFDM baseband signal according to the subcarrier spacing at first frequency interval and SSB
Frequency offset.
The data symbols that S302, sending ending equipment are carried according to the resource particle on frequency offset and the first OFDM symbol
Number, generate the first OFDM baseband signal.
Optionally, in embodiments of the present invention, S301 specifically comprises the following steps:
S301a, sending ending equipment obtain after complementation operation to the subcarrier spacing of SSB according to first frequency interval
Remainder, the subcarrier spacing of SSB and the second predetermined formula, determine frequency offset.
Wherein, second predetermined formula are as follows:X is the subcarrier spacing of SSB, and Y is the remainder, and K is frequency
Offset, Y are not equal to 0.It should be noted that the second above-mentioned predetermined formula is only a kind of example, in practical application, this second
Predetermined formula may exist various deformation.
It should be noted that corresponding K is 0 when remainder Y is 0.
Optionally, in embodiments of the present invention, S301 specifically comprises the following steps:
S301b, sending ending equipment obtain after complementation operation to the subcarrier spacing of SSB according to first frequency interval
Remainder, the subcarrier spacing of SSB and third corresponding relationship, determine frequency offset.
In embodiments of the present invention, above-mentioned third corresponding relationship includes: the remainder and the subcarrier spacing and frequency of SSB
Corresponding relationship between rate offset.
In a kind of example, above-mentioned third corresponding relationship can be third mapping table, in the third mapping table
Store at least one remainder and at least one frequency offset, wherein the corresponding frequency offset of a remainder.It is exemplary
, the second above-mentioned mapping table can be as shown in table 4 below:
Table 4
It should be noted that the associated description of the S302 in the present embodiment, the phase being referred in the S202 in embodiment one
Description is closed, which is not described herein again.
It should be noted that in embodiments of the present invention, when first frequency interval, the subcarrier spacing to SSB carries out complementation
When the remainder obtained after operation is not 0, it is assumed that the son before the subcarrier 0 of SSB there are a subcarrier spacing less than SSB carries
The subcarrier or resource particle of wave spacing, and the complex values of the subcarrier corresponding resource particle can be set as to 0 carry out OFDM base
Band signal generates；Alternatively, directly thinking that this is less than the subcarrier of the subcarrier spacing of SSB is an invalid subcarrier,
In the generation of OFDM baseband signal, it is not construed as carrying out a resource of all resource particles of OFDM baseband signal generation
Particle can supplement the resource particle that a complex values are 0 after the corresponding resource particle of subcarrier 239 of SSB and carry out
The generation of OFDM baseband signal, then the corresponding resource particle of each subcarrier in SSB is numbered compared to side described above
Rule reduces 1, in this way during generating OFDM baseband signal, needs k calculated above1Add 1 on the basis of value again,
And it is compensated using the numerical value as frequency offset；Or a new resource grid (resource grid) is defined, this
When resource grid is divided by the subcarrier spacing of SSB, the subcarrier boundary in resource grid is aligned with the subcarrier of SSB
, thus without generating in formula process in OFDM, the money that a complex values can be 0 is supplemented before the subcarrier 0 of SSB
Source particle, or the resource particle that a complex values can be 0 is supplemented after the subcarrier 239 of SSB.
OFDM baseband signal generation method provided in an embodiment of the present invention in first subcarrier for getting SSB and passes
It, can be according between first frequency behind the first frequency interval of first sub- intercarrier of first public resource block of the defeated SSB
Every the subcarrier spacing with SSB, the frequency offset of the first OFDM baseband signal is determined, since the frequency offset being capable of body
Reveal the phase offset that the first OFDM baseband signal will will appear, therefore, the embodiment of the present invention can be according to the frequency offset
The data symbol of resource particle carrying in the first OFDM symbol corresponding with the first OFDM baseband signal, generates the first OFDM
Baseband signal occurs phase offset so as to avoid the first OFDM baseband signal, that is, avoids SSB not in correct frequency position
It sets and is sent.
Embodiment three:
Shown in Figure 12, the embodiment of the present invention provides a kind of OFDM baseband signal generating means, which generates
Device 400 comprises determining that module 401 and generation module 402, in which:
Determining module 401, for according to first frequency interval and cell frequency interval, or, the first frequency interval and same
The subcarrier spacing for walking block SSB, determines the frequency offset of the first orthogonal frequency division multiplex OFDM baseband signal；Wherein, should
It is divided into first subcarrier of SSB between first frequency and transmits first sub- intercarrier of first public resource block of the SSB
Frequency interval；The SSB is mapped in M OFDM symbol, and the corresponding OFDM baseband signal of an OFDM symbol, this first
OFDM baseband signal is an OFDM baseband signal corresponding with the first OFDM symbol in M OFDM baseband signal.
Generation module 402, the frequency offset and first OFDM symbol for being determined according to the determining module 401
Resource particle carrying data symbol, generate the first OFDM baseband signal.
Optionally, which is specifically used for: determining the first ratio；Wherein, the first ratio is first frequency interval
With the ratio of cell frequency compartment；According to the first ratio and the first corresponding relationship, the frequency offset is determined；Wherein, this
One ratio is the ratio at the first frequency interval and the cell frequency compartment；First corresponding relationship includes: first ratio
With the corresponding relationship between the frequency offset.
Optionally, which is specifically used for: determining the first ratio and the second ratio；Wherein, which is
The ratio at the first frequency interval and the cell frequency compartment；The subcarrier spacing and the unit that second ratio is the SSB
The ratio of frequency interval；According to the first ratio to the second ratio carry out complementation operation after obtain remainder, second ratio and
Second corresponding relationship determines the frequency offset；Wherein, which includes: the remainder, second ratio and the frequency
Corresponding relationship between rate offset.
Optionally, which is specifically used for: determining the first ratio and the second ratio；Wherein, which is
The ratio at the first frequency interval and the cell frequency compartment；The subcarrier spacing and the unit that second ratio is the SSB
The ratio of frequency interval；The remainder obtained after complementation operation, second ratio and the are carried out to the second ratio according to the first ratio
One predetermined formula calculates the frequency offset；Wherein, first predetermined formula are as follows:M is the remainder, and N is should
Second ratio, K are the frequency offset.
Optionally, which is specifically used for: according to the first frequency interval to the subcarrier spacing of the SSB into
The subcarrier spacing and the second predetermined formula of the remainder, the SSB that obtain after row complementation operation, calculate the frequency offset；Its
In, second predetermined formula are as follows:X is the subcarrier spacing of the SSB, and Y is the remainder, and K is the frequency offset.
Optionally, which is specifically used for: the frequency offset determined according to determining module 401 determines first
The phase pushing figure of OFDM baseband signal；According to the data symbols of the resource particle carrying on phase pushing figure and the first OFDM symbol
Number, generate the first OFDM baseband signal.
OFDM baseband signal generating device provided in an embodiment of the present invention in first subcarrier for getting SSB and passes
It, can be according to the first frequency behind the first frequency interval of first sub- intercarrier of first public resource block of the defeated SSB
Interval and cell frequency interval, alternatively, the subcarrier spacing at first frequency interval and SSB, determines the first OFDM baseband signal
Frequency offset, since the frequency offset can embody the phase offset that the first OFDM baseband signal will will appear, because
This, the embodiment of the present invention can be according in the frequency offset the first OFDM symbol corresponding with the first OFDM baseband signal
The data symbol of resource particle carrying, generates the first OFDM baseband signal, and phase occurs so as to avoid the first OFDM baseband signal
Position offset, that is, avoid SSB and do not sent in correct frequency location.
OFDM baseband signal generating device provided in an embodiment of the present invention, which can be realized Fig. 2 in above method embodiment, extremely schemes
11 it is one of any shown in process, to avoid repeating, details are not described herein again.
Example IV:
A kind of hardware structural diagram of Figure 13 OFDM baseband signal generating means of embodiment to realize the present invention, should
OFDM baseband signal generating means 500 include: processor 501, transceiver 502, memory 503 and bus interface.
Wherein, processor 501, for according to first frequency interval and cell frequency interval, or, the first frequency interval and
The subcarrier spacing of synchronization signal block SSB determines the frequency offset of the first orthogonal frequency division multiplex OFDM baseband signal；Wherein,
It is divided into first subcarrier of SSB between the first frequency and transmits first subcarrier of first public resource block of the SSB
Between frequency interval；The SSB is mapped in M OFDM symbol, and the corresponding OFDM baseband signal of an OFDM symbol, this first
OFDM baseband signal is an OFDM baseband signal corresponding with the first OFDM symbol in M OFDM baseband signal；According to the frequency
The data symbol of resource particle carrying in rate offset and first OFDM symbol, generates the first OFDM baseband signal.
OFDM baseband signal generating device provided in an embodiment of the present invention in first subcarrier for getting SSB and passes
It, can be according to the first frequency behind the first frequency interval of first sub- intercarrier of first public resource block of the defeated SSB
Interval and cell frequency interval, alternatively, the subcarrier spacing at first frequency interval and SSB, determines the first OFDM baseband signal
Frequency offset, since the frequency offset can embody the phase offset that the first OFDM baseband signal will will appear, because
This, the embodiment of the present invention can be according in the frequency offset the first OFDM symbol corresponding with the first OFDM baseband signal
The data symbol of resource particle carrying, generates the first OFDM baseband signal, and phase occurs so as to avoid the first OFDM baseband signal
Position offset, that is, avoid SSB and do not sent in correct frequency location.
In the embodiment of the present invention, in Figure 13, bus architecture may include the bus and bridge of any number of interconnection, specifically
The various circuits for the memory that the one or more processors and memory 503 represented by processor 501 represent link together.
Various other circuits of such as peripheral equipment, voltage-stablizer and management circuit or the like can also be linked at one by bus architecture
It rises, these are all it is known in the art, and therefore, it will not be further described herein.Bus interface provides interface.It receives
Hair machine 502 can be multiple element, that is, include transmitter and receiver, provide for over a transmission medium with various other devices
The unit of communication.Processor 501, which is responsible for management bus architecture and common processing, memory 503, can store processor 501 and exists
Execute used data when operation.
In addition, OFDM baseband signal generating means 500 further include some unshowned functional modules, details are not described herein.
Embodiment five:
Optionally, the embodiment of the present invention also provides a kind of sending ending equipment, including processor, and memory is stored in storage
On device and the computer program that can run on a processor, the computer program realize above-described embodiment one when being executed by processor
In OFDM baseband signal generation method process, and identical technical effect can be reached, it is no longer superfluous here to avoid repeating
It states.
The embodiment of the present invention also provides a kind of computer readable storage medium, and meter is stored on computer readable storage medium
Calculation machine program, the computer program realize the more of the OFDM baseband signal generation method in above-described embodiment when being executed by processor
A process, and identical technical effect can be reached, to avoid repeating, which is not described herein again.Wherein, computer-readable storage medium
Matter, such as read-only memory (Read-Only Memory, abbreviation ROM), random access memory (Random Access
Memory, abbreviation RAM), magnetic or disk etc..
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the device that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or device.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art
The part contributed out can be embodied in the form of software products, which is stored in a storage medium
In (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that a terminal (can be mobile phone, computer, service
Device, air conditioner or network equipment etc.) execute method described in various embodiments of the present invention.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form belongs within protection of the invention.
Claims (14)
1. a kind of orthogonal frequency division multiplex OFDM baseband signal generation method, which is characterized in that this method comprises:
According to first frequency interval and cell frequency interval, or, the subcarrier at the first frequency interval and synchronization signal block SSB
Interval, determines the frequency offset of the first OFDM baseband signal；
Wherein, it is divided into first subcarrier of SSB between the first frequency and transmits first public resource block of the SSB
The frequency interval of first sub- intercarrier；The SSB is mapped in M OFDM symbol, the corresponding OFDM of an OFDM symbol
Baseband signal, the first OFDM baseband signal are an OFDM corresponding with the first OFDM symbol in M OFDM baseband signal
Baseband signal；
According to the data symbol of the resource particle carrying on the frequency offset and first OFDM symbol, described the is generated
One OFDM baseband signal.
2. the method according to claim 1, wherein described according to the first frequency interval and unit frequency
Rate interval determines the frequency offset of the first OFDM baseband signal, comprising:
Determine the first ratio；Wherein, first ratio is the ratio at the first frequency interval and the cell frequency compartment
Value；
According to first ratio and the first corresponding relationship, the frequency offset is determined；Wherein, the first corresponding relationship packet
It includes: the corresponding relationship between first ratio and the frequency offset.
3. the method according to claim 1, wherein described according to the first frequency interval and unit frequency
Rate interval determines the frequency offset of the first OFDM baseband signal, comprising:
Determine the first ratio and the second ratio；Wherein, first ratio is the first frequency interval and the cell frequency
The ratio of compartment；Second ratio is the subcarrier spacing of the SSB and the ratio at the cell frequency interval；
The remainder obtained after complementation operation, second ratio and the are carried out to second ratio according to first ratio
Two corresponding relationships determine the frequency offset；Wherein, second corresponding relationship includes: the remainder, second ratio
Corresponding relationship between the frequency offset.
4. the method according to claim 1, wherein described according to the first frequency interval and unit frequency
Rate interval determines the frequency offset of the first OFDM baseband signal, comprising:
Determine the first ratio and the second ratio；Wherein, first ratio is the first frequency interval and the cell frequency
The ratio of compartment；Second ratio is the subcarrier spacing of the SSB and the ratio at the cell frequency interval；
The remainder obtained after complementation operation, second ratio and the are carried out to second ratio according to first ratio
One predetermined formula calculates the frequency offset；
Wherein, first predetermined formula are as follows:M is the remainder, and N is second ratio, and K is the frequency
Offset, M are not equal to 0.
5. the method according to claim 1, wherein described according to the first frequency interval and synchronization signal block
The subcarrier spacing of SSB determines the frequency offset of the first OFDM baseband signal, comprising:
The remainder, the SSB that obtain after complementation operation are carried out according to subcarrier spacing of the first frequency interval to the SSB
Subcarrier spacing and the second predetermined formula, calculate the frequency offset；
Wherein, second predetermined formula are as follows:X is the subcarrier spacing of the SSB, and Y is the remainder, and K is
The frequency offset, Y are not equal to 0.
6. method according to any one of claims 1 to 5, which is characterized in that described according to the frequency offset and institute
The data symbol for stating the resource particle carrying in the first OFDM symbol, generates the first OFDM baseband signal, comprising:
According to the frequency offset, the phase pushing figure of the first OFDM baseband signal is determined；
According to the data symbol of the resource particle carrying on the phase pushing figure and first OFDM symbol, described the is generated
One OFDM baseband signal.
7. a kind of orthogonal frequency division multiplex OFDM baseband signal generating means characterized by comprising
Determining module is used for according to first frequency interval and cell frequency interval, or, the first frequency interval and synchronization signal
The subcarrier spacing of block SSB determines the frequency offset of the first OFDM baseband signal；
Wherein, it is divided into first subcarrier of SSB between the first frequency and transmits first public resource block of the SSB
The frequency interval of first sub- intercarrier；The SSB is mapped in M OFDM symbol, the corresponding OFDM of an OFDM symbol
Baseband signal, the first OFDM baseband signal are an OFDM corresponding with the first OFDM symbol in M OFDM baseband signal
Baseband signal；
Generation module, the money on the frequency offset and first OFDM symbol for being determined according to the determining module
The data symbol of source particle carrying, generates the first OFDM baseband signal.
8. device according to claim 7, which is characterized in that the determining module is specifically used for:
Determine the first ratio；Wherein, first ratio is the ratio at the first frequency interval and the cell frequency compartment
Value；
According to first ratio and the first corresponding relationship, the frequency offset is determined；Wherein, first ratio is described
The ratio at first frequency interval and the cell frequency compartment；First corresponding relationship includes: first ratio and institute
State the corresponding relationship between frequency offset.
9. device according to claim 7, which is characterized in that the determining module is specifically used for:
Determine the first ratio and the second ratio；Wherein, first ratio is the first frequency interval and the cell frequency
The ratio of compartment；Second ratio is the subcarrier spacing of the SSB and the ratio at the cell frequency interval；
The remainder obtained after complementation operation, second ratio and the are carried out to second ratio according to first ratio
Two corresponding relationships determine the frequency offset；Wherein, second corresponding relationship includes: the remainder, second ratio
Corresponding relationship between the frequency offset.
10. device according to claim 7, which is characterized in that the determining module is specifically used for:
Determine the first ratio and the second ratio；Wherein, first ratio is the first frequency interval and the cell frequency
The ratio of compartment；Second ratio is the subcarrier spacing of the SSB and the ratio at the cell frequency interval；
Remainder, second ratio and first obtained after complementation operation is carried out to second ratio according to first ratio
Predetermined formula calculates the frequency offset；
Wherein, first predetermined formula are as follows:M is the remainder, and N is second ratio, and K is the frequency
Offset, M are not equal to 0.
11. device according to claim 7, which is characterized in that the determining module is specifically used for:
The remainder, the SSB that obtain after complementation operation are carried out according to subcarrier spacing of the first frequency interval to the SSB
Subcarrier spacing and the second predetermined formula, calculate the frequency offset；
Wherein, second predetermined formula are as follows:X is the subcarrier spacing of the SSB, and Y is the remainder, and K is institute
Frequency offset is stated, Y is not equal to 0.
12. according to the described in any item devices of claim 7 to 11, which is characterized in that the generation module is specifically used for:
According to the frequency offset that the determining module determines, the phase offset of the first OFDM baseband signal is determined
Amount；
According to the data symbol of the resource particle carrying on the phase pushing figure and first OFDM symbol, described the is generated
One OFDM baseband signal.
13. a kind of OFDM baseband signal generating means, which is characterized in that including processor, memory and be stored in the storage
On device and the computer program that can run on the processor, realized such as when the computer program is executed by the processor
The step of OFDM baseband signal generation method described in any one of claims 1 to 6.
14. a kind of computer readable storage medium, which is characterized in that store computer journey on the computer readable storage medium
Sequence is realized when the computer program is executed by processor as OFDM baseband signal described in any one of claims 1 to 6 is raw
The step of at method.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111669235A (en) * | 2020-05-15 | 2020-09-15 | 中国信息通信研究院 | High-frequency discovery signal transmission method, device and system |
| CN112218316A (en) * | 2020-10-09 | 2021-01-12 | 广东省新一代通信与网络创新研究院 | Frequency point configuration calculation method and device for 5GNR cell and storage medium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120177136A1 (en) * | 2011-01-12 | 2012-07-12 | Kabushiki Kaisha Toshiba | Wireless communication device |
| CN103081425A (en) * | 2010-08-30 | 2013-05-01 | 摩托罗拉移动有限责任公司 | Methods and apparatus for carrier frequency offset estimation and carrier frequency offset correction |
-
2018
- 2018-02-12 CN CN201810147101.XA patent/CN110149293B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103081425A (en) * | 2010-08-30 | 2013-05-01 | 摩托罗拉移动有限责任公司 | Methods and apparatus for carrier frequency offset estimation and carrier frequency offset correction |
| US20120177136A1 (en) * | 2011-01-12 | 2012-07-12 | Kabushiki Kaisha Toshiba | Wireless communication device |
Non-Patent Citations (1)
| Title |
|---|
| VIVO: "《3GPP TSG RAN WG1 Meeting Ad Hoc 1801 R1-1800172》", 26 January 2018 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111669235A (en) * | 2020-05-15 | 2020-09-15 | 中国信息通信研究院 | High-frequency discovery signal transmission method, device and system |
| CN111669235B (en) * | 2020-05-15 | 2022-04-22 | 中国信息通信研究院 | High-frequency discovery signal transmission method, device and system |
| CN112218316A (en) * | 2020-10-09 | 2021-01-12 | 广东省新一代通信与网络创新研究院 | Frequency point configuration calculation method and device for 5GNR cell and storage medium |
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