CN110311763A - 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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- CN110311763A CN110311763A CN201810259468.0A CN201810259468A CN110311763A CN 110311763 A CN110311763 A CN 110311763A CN 201810259468 A CN201810259468 A CN 201810259468A CN 110311763 A CN110311763 A CN 110311763A
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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
- H04L5/0001—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
- H04L5/0008—Wavelet-division
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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
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0092—Indication of how the channel is divided
Abstract
The embodiment of the present invention provides a kind of OFDM baseband signal generation method and device, is related to the communications field, is aligned to solve the problems, such as that the frequency offset of existing high-level signaling instruction is not able to satisfy the subcarrier 0 of Common RB.This method comprises: obtaining the configuration information of the first subcarrier spacing, the frequency of first carrier and the first instruction information；First subcarrier spacing is the corresponding subcarrier spacing of first resource collection transmitted on first carrier, first instruction information is used to indicate the target frequency offset that first resource concentrates the corresponding OFDM baseband signal of public resource block for including, which concentrates the frequency offset between the center frequency point of the frequency bandwidth of all public resource blocks for the center frequency point and first resource of first carrier；According to the configuration information, the frequency of first carrier and the first instruction information, target frequency offset is determined；According to the data symbol carried in target frequency offset and public resource block, 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, the subcarrier spacing SCS of the public resource block (Common RB) carried on carrier wave
(subcarrier spacing) can be set to 15* (2^n) kHz, and wherein n can take negative.That is, in NR system
In, SCS can be set to: 3.75kHz, 7.5kHz, 15kHz, 30kHz, 60kHz, 120kHz, 240kHz etc..Due to these SCS two
Integral multiple relation is not fully presented between two, therefore, with the son of the different SCS Common RB transmitted on same carrier wave
Very there may be certain frequency shift (FS)s greatly for carrier wave 0.However, needing to guarantee in existing OFDM baseband signal generating process
The subcarrier 0 in all Common RB transmitted on same carrier wave with different SCS is aligned.
In the prior art, the main frequency offset according to indicated by the high-level signaling that issues of high level of the network equipment,
Pass through the frequency offset in the generating process of OFDM baseband signal for each RE (resource element) in target frequency
Rate is sent on position, so that the boundary alignment of all Common RB on the carrier wave.
However, in existing OFDM baseband signal generating process, high level institute into the high-level signaling that the network equipment issues
The frequency offset of instruction is -6,0,6 these three values.It only can guarantee and transmitted with the frequency interval of 15kHz and 60kHz by SCS
The boundary alignment of Common RB do not ensured that for the Common RB transmitted with other frequency intervals by SCS
It can be with the boundary alignment of other Common RB, and so as to cause the OFDM baseband signal of generation, there may be phase offsets.
Summary of the invention
The embodiment of the present invention provides a kind of OFDM baseband signal generation method and device, refers to solve existing high-level signaling
The problem of subcarrier 0 that the frequency offset shown is not able to satisfy commen RB is aligned.
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:
Obtain the configuration information of the first subcarrier spacing, the frequency of first carrier and the first instruction information；
First subcarrier spacing is the corresponding subcarrier spacing of first resource collection that transmits on first carrier, described the
One instruction information is used to indicate the target frequency that the first resource concentrates the corresponding OFDM baseband signal of public resource block for including
Rate offset, the target frequency offset are all public for the center frequency point of the first carrier and first resource concentration
Frequency offset between the center frequency point of the frequency bandwidth of resource block；
According to the frequency and the first instruction information of the configuration information, the first carrier, determine that target frequency is inclined
Shifting amount；
According to the data symbol carried in the target frequency offset and the public resource block, the OFDM is generated
Baseband signal.
Second aspect, the embodiment of the invention provides a kind of OFDM baseband signal generating means, comprising:
Module is obtained, for obtaining the configuration information of the first subcarrier spacing, the frequency and the first instruction letter of first carrier
Breath；
Wherein, first subcarrier spacing is on the first carrier between the corresponding subcarrier of first resource collection that transmits
Every the first instruction information is used to indicate the first resource and concentrates the corresponding OFDM baseband signal of public resource block for including
Target frequency offset, the target frequency offset be the first carrier center frequency point and the first resource concentrate
Frequency offset between the center frequency point of the frequency bandwidth of all public resource blocks；
Determining module, for according to it is described acquisition module obtain the configuration information, the first carrier frequency and
The first instruction information, determines target frequency offset；
Generation module, the target frequency offset and the public resource for being determined according to the determining module
The data symbol carried on block generates the 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, which is executed by the processor
The step of Shi Shixian method as described in relation to the first aspect.
Fourth aspect, the embodiment of the invention provides a kind of computer readable storage medium, the computer-readable storage mediums
The step of storing computer program in matter, method as described in relation to the first aspect realized when which is executed by processor.
In embodiments of the present invention, during generating OFDM baseband signal, the embodiment of the present invention passes through compensation first
The center frequency point of the frequency bandwidth of all public resource blocks in the resource set transmitted as unit of different sub-carrier interval on carrier wave
With the frequency offset between the center frequency point of first carrier, come guarantee different sub-carrier interval transmission public resource block boundary
Alignment.
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 flow diagram one of OFDM baseband signal generation method provided in an embodiment of the present invention；
Fig. 3 is a kind of one of the carrier wave figure of OFDM baseband signal generation method application provided in an embodiment of the present invention；
Fig. 4 is the two of the carrier wave figure of a kind of OFDM baseband signal generation method application provided in an embodiment of the present invention；
Fig. 5 is a kind of one of structural schematic diagram of OFDM baseband signal generating means provided in an embodiment of the present invention；
Fig. 6 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 to
Machine, M2M), it is D2M, macro micro- communication, enhanced mobile Internet (enhance Mobile Broadband, eMBB), super
High reliability communicates (ultra Reliable&Low Latency Communication, uRLLC) and sea with ultralow time delay
Measure scenes such as Internet of Things Network Communication (Massive Machine Type Communication, mMTC).These scenes include but not
It is limited to: communication between communication or the network equipment and the network equipment or the network equipment and terminal room between terminal and terminal
In the scenes such as communication.The embodiment of the present invention can be applied to the network equipment in 5G communication system and the communication between terminal,
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.
Illustratively, the sending ending equipment 100 in the embodiment of the present invention, can be to OFDM after generating OFDM baseband signal
Baseband signal carries out upconverting to carrier frequency, is sent to receiving device 200.
In embodiments of the present invention, above-mentioned sending ending equipment 100 can be the network equipment, be also possible to be that terminal is set
Standby, the present invention is not construed as limiting.For example, being directed to downlink, sending ending equipment 100 is the network equipment, and receiving device 200 sets for terminal
Standby, for uplink, sending ending equipment 100 is terminal device, and receiving device 200 is the network equipment.
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..
The generating process of existing OFDM baseband signal is illustrated below:
One, by taking the OFDM baseband signal generating process except the other signals of Physical Random Access Channel as an example, a subframe
In lOFDM time domain baseband signalsGeneration formula it is as follows:
Wherein, p is the port numbering of signal, and t is the sampling time, and μ is the configuration information of subcarrier spacing, and Δ f indicates son
The subcarrier spacing when configuration information at carrier wave interval is μ, k is subcarrier number,For indicating the RB in bandwidth resources
Number,For indicating the subcarrier number in a RB,For indicating when the configuration information of subcarrier spacing is μ, l
The circulating prefix-length of a 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 match on the p of port corresponding to subcarrier spacing
First of OFDM symbol when setting 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 the configuration information of subcarrier spacing is 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
Wherein, above-mentionedIt is indicated by high-level signaling k0, is provided in existing agreement, in existing OFDM baseband signal
In generating process, need to guarantee that the subcarrier 0 in all Common RB transmitted on same carrier wave with different SCS is aligned,
The boundary of all Common RB under i.e. same carrier wave needs to be aligned.Currently, high-level signaling support k0 value be collection be combined into -6,
0,6 }.
Two, for Physical Random Access Channel (Physical Random Access Channel, PRACH), a son
LOFDM time domain baseband signals OFDM time domain baseband signals in frameGeneration formula it is as follows:
K=Δ f/ Δ fRA(formula 4)；
Wherein, p is the port numbering of signal, and t is the sampling time, and μ is the configuration information of subcarrier spacing, and Δ f indicates son
The subcarrier spacing when configuration information at carrier wave interval is μ, Δ f indicate the ascender of the initial activation where PRACH resource
The ascender band of activation where bandwidth (initial active uplink bandwidth part) or PRACH resource
The subcarrier spacing of wide (active uplink bandwidth part).K is subcarrier number.
Indicate the number of sub carrier wave of protection interval, unit is Δ fRA。
For indicating when the configuration information of subcarrier spacing is μ, the circulating prefix-length of first of OFDM symbol.
T in above-mentioned formula 3c=1/ (Δ fmax·Nf), wherein Δ fmax=480103Hz, Nf=4096.
For the symbol on k-th of subcarrier on the p of port, for sending PRACH preamble.For table
Show that configuration information is RB number in μ Time Bandwidth resource,For indicating the subcarrier number in a RB.
ΔfRAIndicate subcarrier spacing of the PRACH on frequency domain.
Indicate initial access phase by the ascender of the high-level signaling initial-UL-BWP initial activation obtained
The Common RB of lowest number in bandwidth；Otherwise,Indicate the ascending part by the high-level signaling UL-BWP activation obtained
Divide the Common RB of lowest number in bandwidth.
Indicate initial access phase by high-level signaling prach- relevant with initial activation ascender bandwidth
Frequency-start instruction frequency domain on PRACH transmission opportunity (PRACH transmission occasion) and initially
Activate the frequency shift (FS) between the PRB0 in ascender bandwidth；Otherwise,Indicate height relevant with activation ascender bandwidth
The minimum PRACH transmission occasion of frequency on the frequency domain of layer signaling prach-frequency-start instruction
Frequency shift (FS) between the PRB0 in activation ascender bandwidth.
nRAIt indicates on some time point (time instance refers to the time domain length of a PRACH transmission opportunity)
Number of the PRACH transmission occasion on frequency domain.
Indicate what accidental access signal frequency domain occupied, the number of the RB based on PUSCH subcarrier spacing.
For FR1, Δ fRA∈ { 1.25,5,15,30 } kHz, at this timeIndicate PRACH preamble in a subframe
Initial position.For FR2, Δ fRA∈ { 60,120 } kHz, at this timeIndicate PRACH preamble in a sub- intercarrier
It is divided into the initial position in the time slot of 60kHz.
LRAAnd NuThe ZC sequence length for respectively indicating Preamble and the time span after mapping.
Indicate CP length, in which:
As Δ fRAWhen ∈ { 1.25,5 } kHz, n=0；
As Δ fRAWhen ∈ { 15,30,60,120 } kHz, n is indicatedInclude in interval
The number of the primary sign of the field of 0.5ms.
Wherein, above-mentionedIt is indicated by high-level signaling k0, is provided in existing agreement, in existing OFDM baseband signal
In generating process, need to guarantee that the subcarrier 0 in all Common RB disposed on same carrier wave with different SCS is aligned,
The boundary of all Common RB under i.e. same carrier wave needs to be aligned.Currently, high-level signaling support k0 value set be -6,0,
6}。
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 obtain the configuration information of the first subcarrier spacing, the frequency of first carrier and the first instruction
Information.
Sending ending equipment in the embodiment of the present invention can be the sending ending equipment in communication system shown in Fig. 1, for example, base
It stands.
Wherein, the first above-mentioned subcarrier spacing is on first carrier between the corresponding subcarrier of first resource collection that transmits
Every the first resource collection includes at least one Common RB.The first above-mentioned instruction information is used to indicate first resource concentration
The target frequency offset of the corresponding OFDM baseband signal of the Common RB for including.Above-mentioned target frequency offset is first
The center frequency point and first resource of carrier wave concentrate the frequency offset between the center frequency point of the frequency bandwidth of all Common RB.
In embodiments of the present invention, the first above-mentioned instruction information, which can be carried, is handed down to the height of sending ending equipment in high level
In layer signaling.
In embodiments of the present invention, the configuration information of the first above-mentioned subcarrier spacing is used to indicate between the first subcarrier
Every μ value that is, above.
It should be noted that resource grid (resource specified in resource set, that is, standard in the embodiment of the present invention
grid)。
S202, sending ending equipment determine target frequency according to the configuration information of the first subcarrier spacing and the first instruction information
Rate offset.
In embodiments of the present invention, in above-mentioned target frequency offset, that is, formula 1 and formula 5
S203, sending ending equipment are generated according to the data symbol carried in target frequency offset and Common RB
OFDM baseband signal.
In embodiments of the present invention, above-mentioned first resource collection is mapped in M OFDM symbol, and an OFDM symbol is corresponding
One OFDM baseband signal.For any OFDM symbol in the M OFDM symbol, sending ending equipment is inclined according to the target frequency
Shifting amountAnd the data symbol of the resource particle carrying in the OFDM symbol, generate the corresponding OFDM base band letter of the OFDM symbol
Number.Specifically, the data symbol that sending ending equipment is carried according to the resource particle in the target frequency offset, the OFDM symbol
And OFDM baseband signal generates formula (e.g., formula 1 or formula 3), generates the corresponding OFDM baseband signal of the OFDM symbol.
For example, as shown in Figure 3, it is assumed that on carrier 1 respectively using 15kHZ, 30kHZ and 60kHZ between subcarrier
Every transmitting Common RB, wherein resource set 1 (i.e. the Common RB of the first row, a Common of the first row in Fig. 3
RB is 12*15kHz) it is to be transmitted by subcarrier spacing of 15kHZ, resource set 2 in Fig. 3 (i.e. the Common RB of the second row,
One Common RB of the second row is 12*30kHz) it is to be transmitted by subcarrier spacing of 30kHZ, the resource set 3 in Fig. 3 is (i.e.
A Common RB of the Common RB of the third line, the third line are 12*60kHz) it is to be transmitted by subcarrier spacing of 60kHZ
's.
As shown in figure 3, the center frequency point of the center frequency point of carrier wave 1 and the frequency bandwidth of all Common RB in resource set 1
It being overlapped, the center frequency point in resource set 1 in carrier wave 1 differs 6*15kHz (i.e. 6 15kHz) with the center frequency point of resource set 2,
Needing to deviate the subcarrier of 3 30kHz, and mobile to the frequency direction of low frequency due to needing, corresponding offset is-
The center of carrier wave 1 is in the subcarrier 0 and resource set 3 of 3, the Common RB of the center frequency point in resource set 1 in carrier wave 1
The subcarrier 0 of the Common RB of frequency point also differs 6*15kHz (i.e. 6 15kHz), that is, needs to deviate the son of 1.5 60kHz
Carrier wave, and it is mobile to the frequency direction of low frequency due to needing, corresponding offset is -1.5.As shown in figure 4, by resource set
Common RB in 2 is unified to deviate 3 to the left, deviates 1.5 to the right for the Common RB in resource set 3 is unified, can make money
The boundary of Common RB in source collection 1, resource set 2 and resource set 3 flushes.
Optionally, the determination process (i.e. S202) of the target frequency offset of OFDM baseband signal is as follows:
In embodiments of the present invention, S202 can at least be realized by following two implementation.
1, the first possible implementation:
Optionally, the first above-mentioned instruction information includes: first frequency offset, which is high-rise letter
Enable carry using the second subcarrier spacing as frequency offset indicated by unit frequency interval, wherein above-mentioned second son load
Wave spacing can be identical as the first subcarrier spacing, can also be different, and the embodiment of the present invention is without limitation.
Illustratively, when first frequency offset be 0, then show not deviate, corresponding target frequency offset is also 0.
Illustratively, S202 specifically includes S202a1 or S202a2, in which:
S202a1, when the frequency of first carrier belongs to first frequency range, sending ending equipment is deviated according to first frequency
Amount, the configuration information of the first subcarrier spacing and the first preset formula calculate target frequency offset.
Wherein, the first above-mentioned preset formula are as follows:
S202a2, when the frequency of first carrier belongs to second frequency range, sending ending equipment is deviated according to first frequency
Amount, the configuration information of the first subcarrier spacing and the second preset formula calculate target frequency offset.
Wherein, the second above-mentioned preset formula are as follows:
In embodiments of the present invention, above-mentionedFor target frequency offset, above-mentioned K0For first frequency offset, above-mentioned μ
For the configuration information of the first subcarrier spacing, above-mentioned μ0For the configuration information of the second subcarrier spacing.
In embodiments of the present invention, the configuration information μ for the subcarrier spacing that above-mentioned first frequency range is supported be less than or
Equal to 2, i.e., the subcarrier spacing that first frequency range is supported is 15/30/60kHZ, the son that above-mentioned second frequency range is supported
The configuration information μ at carrier wave interval is greater than or equal to 2, i.e., the subcarrier spacing that second frequency range is supported is 60/120/240kHZ.
Illustratively, if setting first frequency range as FR1, second frequency range is FR2, then the range of frequency bandwidths of FR1 are as follows:
The range of frequency bandwidths of 450MHZ-6000MHZ, FR2 are as follows: 24250MHZ-52600MHZ.
For example, it is assumed that first instruction information in include first frequency offset be high-level signaling carry be with 15kHZ
Frequency offset indicated by cell frequency interval, i.e., the value of the first instruction information first frequency offset for including belong to-
6,0,6 }, then above-mentioned formula 7 are as follows:
Example 1: if the frequency of first carrier belongs to FR1, the numerical value of first resource collection configures first in (numerology)
The configuration information μ of subcarrier spacing={ 0,1,2 }, i.e. subcarrier spacing are 15/30/60kHZ, and the first frequency of high level configuration is inclined
In the case that shifting amount k0 is { -6,0,6 }, k0 is substituted into formula 6 and is calculatedIt is calculatedSet be respectively -6,0,
6 }, { -3,0,3 }, { -1.5,0,1.5 }.
Example 2: if the frequency of first carrier belongs to FR2, the first subcarrier spacing in the numerology of first resource collection
Configuration information μ={ 2,3,4 }, i.e., subcarrier spacing be 60/120/240kHZ, high level configuration first frequency offset k0 be
In the case where { -6,0,6 }, k0 is substituted into formula 7 and is calculatedIt is calculatedSet be respectively { -6,0,6 }, -3,
0,3 }, { -1.5,0,1.5 }.
2, second of possible implementation:
Optionally, the first above-mentioned instruction information is used to indicate the corresponding shift state of target frequency offset.Mainly may be used
To be realized by two kinds of implementations.
1), the first implementation
In embodiments of the present invention, above-mentioned target offset amount includes frequency offseting value and shift state, the frequency shift (FS)
Value is specific offset, is the absolute value of target offset amount, is positive number.Wherein, above-mentioned shift state includes three kinds of states,
(commonly referred to as moving to left) is deviated to the center frequency point direction lower than first carrier, to the center frequency point direction for being higher than first carrier
It deviates (commonly referred to as moving to right) and does not deviate.
It should be noted that when the shift state of the first instruction information instruction is not deviate, then corresponding frequency shift (FS)
Value is 0.
Illustratively, when the shift state of the first instruction information instruction is inclined to the center frequency point direction lower than first carrier
It moves or is deviated to the center frequency point direction for being higher than first carrier, in embodiments of the present invention, S202 specifically comprises the following steps:
S202b1, sending ending equipment determine shift state according to the first instruction information.
Further alternative, the first above-mentioned instruction information includes first identifier, which is used to indicate target frequency
The corresponding shift state of rate offset.For example, first identifier can be set as to -1,1,0, wherein -1 indicates to lower than first
The center frequency point direction of carrier wave deviates, and 1 indicates to deviate to the center frequency point direction for being higher than first carrier, and 0 indicates not deviate, when
So, above-mentioned -1,1 is only a kind of example, in practical applications, can set other numbers or labels to indicate offset shape
State, here without limitation.
S202b2, sending ending equipment determine frequency offseting value according to configuration information.
In embodiments of the present invention, sending ending equipment can be based on after determining frequency offset and shift state
The shift state is that frequency offset addition is upper positive and negative, for example, it is assumed that frequency offset is 6, if shift state is to being lower than
The center frequency point direction of first carrier deviates, it is determined that target offset amount is -6, if shift state is to higher than first carrier
Center frequency point direction offset, it is determined that target offset amount is 6.
Further alternative, in embodiments of the present invention, above-mentioned S202b2 can at least pass through following two realization side
Formula is realized:
Mode 1:
Illustratively, S202b2 specifically comprises the following steps A1 or step A2, in which:
Step A1, when the frequency of first carrier belongs to first frequency range, sending ending equipment is according between the first subcarrier
Every configuration information and third preset formula, calculate frequency offseting value.
Wherein, above-mentioned third preset formula are as follows:
Step A2, when the frequency of first carrier belongs to second frequency range, sending ending equipment is according between the first subcarrier
Every configuration information and the 4th preset formula, calculate frequency offseting value.
Wherein, the 4th above-mentioned preset formula are as follows:
In embodiments of the present invention, K1For frequency offseting value, μ is the configuration information of the first subcarrier spacing.
It should be noted that the first frequency range in above-mentioned steps A1 is related to the second frequency range in step A2
Introduction is referred to detailed description, and which is not described herein again.
Example 1: if the frequency of first carrier belongs to FR1, in the numerical value configuration (numerology) of first resource collection the
The configuration information μ of one subcarrier spacing={ 0,1,2 }, i.e. subcarrier spacing are 15/30/60kHZ, then μ value are successively substituted into public affairs
In formula 8, calculated K1 is respectively 6,3,1.5.
Example 2: if the frequency of first carrier belongs to FR2, in the numerical value configuration (numerology) of first resource collection the
The configuration information μ of one subcarrier spacing={ 2,3,4 }, i.e. subcarrier spacing are 15/30/60kHZ, then μ value are successively substituted into public affairs
In formula 9, calculated K1 is respectively 6,3,1.5.
Mode 2:
Illustratively, S202b2 specifically comprises the following steps:
Step B1, sending ending equipment according to the first subcarrier spacing and the first corresponding relationship, determine frequency offseting value.
In embodiments of the present invention, the first above-mentioned corresponding relationship include: the first subcarrier spacing configuration information and
Corresponding relationship between frequency offseting value.
In a kind of example, above-mentioned first corresponding relationship can be the first mapping table, in first mapping table
Store the configuration information and at least one frequency offseting value of at least one subcarrier spacing, wherein subcarrier spacing
Configuration information corresponds to a frequency offseting value.Illustratively, above-mentioned mapping table can be as shown in table 2 below:
Table 2
Illustratively, sending ending equipment is in corresponding first son of frequency bandwidth and first resource collection for having known carrier wave
It, can be by table look-up (such as table 2), so that it is determined that the corresponding OFDM base band of first resource collection out after the configuration information at carrier wave interval
The target frequency offset of signal.
2), second of implementation
In embodiments of the present invention, the first above-mentioned instruction information includes first identifier, which is used to indicate mesh
Mark the corresponding shift state of frequency offset.
Further alternative, the value collection of above-mentioned first identifier is combined into { -1,0,1 }, the value set of the first identifier
In three values be used to indicate three kinds of states (move to left, move to right and do not deviate) of frequency shift (FS), wherein -1 indicates to higher-frequency
Direction offset, 1 indicates to deviate to compared with low frequency direction, and 0 indicates not deviate.Based on this, in embodiments of the present invention, S202 is specifically wrapped
Include following steps:
S202c1, when the frequency of first carrier belongs to first frequency range, sending ending equipment is according between the first subcarrier
Every configuration information and the 5th preset formula, calculate target frequency offset.
Wherein, the 5th above-mentioned preset formula are as follows:
S202c2, when the frequency of first carrier belongs to second frequency range, sending ending equipment is according between the first subcarrier
Every configuration information and the 6th preset formula, calculate target frequency offset.
Wherein, the 6th above-mentioned preset formula are as follows:
In embodiments of the present invention, above-mentionedFor target frequency offset, above-mentioned K0For first identifier, above-mentioned μ is first
The configuration information of subcarrier spacing.
OFDM baseband signal generation method provided in an embodiment of the present invention is led to during generating OFDM baseband signal
The frequency bandwidth of all Common RB in the resource set transmitted as unit of different sub-carrier interval on overcompensation first carrier
Frequency offset between center frequency point and the center frequency point of first carrier, to guarantee the Common of different sub-carrier interval transmission
The boundary alignment of RB.
Embodiment two:
As shown in figure 5, the embodiment of the present invention provides a kind of OFDM baseband signal generating means, which includes: to obtain
Module 301, determining module 302 and generation module 303, in which:
Module 301 is obtained, for obtaining the configuration information of the first subcarrier spacing, the frequency and the first instruction of first carrier
Information.
Wherein, above-mentioned first subcarrier spacing is the corresponding subcarrier spacing of first resource collection transmitted on first carrier,
Above-mentioned first instruction information is used to indicate the target that first resource concentrates the corresponding OFDM baseband signal of public resource block for including
Frequency offset, above-mentioned target frequency offset are that the center frequency point of first carrier and first resource concentrate all public resource blocks
Frequency bandwidth center frequency point between frequency offset.
Determining module 302, for according to configuration information, the first load for obtaining the first subcarrier spacing that module 301 obtains
The frequency of wave and the first instruction information, determine target frequency offset.
Generation module 303, for being held according on the determining target frequency offset of determining module 302 and public resource block
The data symbol of load generates OFDM baseband signal.
Optionally, above-mentioned first instruction information includes: high-level signaling carrying using the second subcarrier spacing as unit frequency
The indicated first frequency offset in interval；The determining module 302 is specifically used for: when first frequency offset be 0, then target frequency
Rate offset is 0；Alternatively, when the frequency of first carrier belongs to first frequency range, according to first frequency offset, the first son
The configuration information at carrier wave interval and the first preset formula calculate target frequency offset；Wherein, the first preset formula are as follows:The configuration information for the subcarrier spacing that first frequency range is supported is less than or equal to 2；Alternatively, working as the frequency of first carrier
It is default according to first frequency offset, the configuration information of the first subcarrier spacing and second when rate belongs to second frequency range
Formula calculates target frequency offset；Wherein, the second preset formula are as follows:The son that second frequency range is supported carries
The configuration information of wave spacing is greater than or equal to 2；Wherein, first frequency range and second frequency range be not be overlapped,For target frequency
Rate offset, K0For first frequency offset, μ is the configuration information of the first subcarrier spacing, μ0For matching for the second subcarrier spacing
Confidence breath.
Optionally, above-mentioned first instruction information is used to indicate the corresponding shift state of target frequency offset；Target offset
Amount includes frequency offseting value and shift state；Determining module 302 is specifically used for: shift state is determined according to the first instruction information,
And frequency offseting value is determined according to configuration information；Above-mentioned shift state include: do not deviate, to be lower than first carrier center frequency point
Direction offset is deviated to the center frequency point direction for being higher than first carrier；Wherein, when shift state is not deviate, then frequency is inclined
Shifting value is 0.
It is further alternative, it is to the center frequency point side for being lower than first carrier in the shift state of the first instruction information instruction
When deviating to offset or to the center frequency point direction for being higher than the first carrier, above-mentioned determining module 302 is also used to: when first carries
When the frequency of wave belongs to first frequency range, according to the configuration information of the first subcarrier spacing and third preset formula, calculate
Frequency offseting value；Wherein, third preset formula are as follows:The configuration information for the subcarrier spacing that first frequency range is supported
Less than or equal to 2；Alternatively, when the frequency of first carrier belongs to second frequency range, according to the configuration of the first subcarrier spacing
Information and the 4th preset formula calculate frequency offseting value；Wherein, the 4th preset formula are as follows:Second frequency range
The configuration information of the subcarrier spacing of support is greater than or equal to 2；Wherein, first frequency range and second frequency range be not be overlapped,
K1For frequency offseting value, μ is the configuration information of the first subcarrier spacing.
Optionally, above-mentioned determining module 302, is also used to: according to the configuration information of the first subcarrier spacing and first pair
It should be related to, determine frequency offseting value；Wherein, the first corresponding relationship includes: the corresponding pass between configuration information and frequency offseting value
System.
Optionally, above-mentioned first instruction information includes first identifier, and first identifier is used to indicate target frequency offset pair
The shift state answered.
OFDM baseband signal generating means provided in an embodiment of the present invention can be realized Fig. 2 in above method embodiment and extremely scheme
4 it is one of any shown in process, to avoid repeating, details are not described herein again.
OFDM baseband signal generating means provided in an embodiment of the present invention are led to during generating OFDM baseband signal
The frequency bandwidth of all public resource blocks in the resource set transmitted as unit of different sub-carrier interval on overcompensation first carrier
Center frequency point and first carrier center frequency point between frequency offset, to guarantee the public money of different sub-carrier interval transmission
The boundary alignment of source block.
Embodiment three:
A kind of hardware structural diagram of Fig. 6 OFDM baseband signal generating means of embodiment to realize the present invention, the dress
Setting 400 includes: processor 401, transceiver 402, memory 403, user interface 404 and bus interface.
Wherein, processor 401, for obtaining the configuration information of the first subcarrier spacing, the frequency and first of first carrier
Indicate information, the first subcarrier spacing is the corresponding subcarrier spacing of first resource collection transmitted on first carrier, the first instruction
Information is used to indicate the target frequency offset that first resource concentrates the corresponding OFDM baseband signal of public resource block for including, mesh
Mark frequency offset is the center that the center frequency point of first carrier concentrates the frequency bandwidth of all public resource blocks with first resource
Frequency offset between frequency point；According to configuration information, the frequency of first carrier and the first instruction information, determine that target frequency deviates
Amount；According to the data symbol carried in target frequency offset and the public resource block, OFDM baseband signal is generated.
OFDM baseband signal generating means provided in an embodiment of the present invention are led to during generating OFDM baseband signal
The frequency bandwidth of all public resource blocks in the resource set transmitted as unit of different sub-carrier interval on overcompensation first carrier
Center frequency point and first carrier center frequency point between frequency offset, to guarantee the public money of different sub-carrier interval transmission
The boundary alignment of source block.
In the embodiment of the present invention, in Fig. 6, 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 403 represented by processor 401 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 402 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 401, which is responsible for management bus architecture and common processing, memory 403, can store processor 401 and exists
Execute used data when operation.
In addition, OFDM baseband signal generating means 400 further include some unshowned functional modules, details are not described herein.
Example IV:
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 (16)
1. a kind of orthogonal frequency division multiplex OFDM baseband signal generation method, which is characterized in that this method comprises:
Obtain the configuration information of the first subcarrier spacing, the frequency of first carrier and the first instruction information；
Wherein, first subcarrier spacing is the corresponding subcarrier spacing of first resource collection transmitted on the first carrier,
The first instruction information is used to indicate the first resource and concentrates the corresponding OFDM baseband signal of public resource block for including
Target frequency offset, the target frequency offset concentrate institute for the center frequency point of the first carrier and the first resource
There is the frequency offset between the center frequency point of the frequency bandwidth of public resource block；
According to the frequency and the first instruction information of the configuration information, the first carrier, target frequency offset is determined；
According to the data symbol carried in the target frequency offset and the public resource block, the OFDM base band is generated
Signal.
2. the method according to claim 1, wherein the first instruction information includes: what high-level signaling carried
Using the second subcarrier spacing as first frequency offset indicated by unit frequency interval；
It is described according to the configuration information and it is described first instruction information, determine target frequency offset, comprising:
When the frequency of the first carrier belongs to first frequency range, according to the first frequency offset, it is described match confidence
Breath and the first preset formula, calculate the target frequency offset；First preset formula are as follows:Described
The configuration information for the subcarrier spacing that one frequency range is supported is less than or equal to 2；
Alternatively,
When the frequency of the first carrier belongs to second frequency range, according to the first frequency offset, it is described match confidence
Breath and the second preset formula, calculate the target frequency offset；Second preset formula are as follows:Described
The configuration information for the subcarrier spacing that two frequency ranges are supported is greater than or equal to 2；
Wherein, the first frequency range and the second frequency range be not be overlapped,For the target frequency offset, K0For
The first frequency offset, μ are the configuration information, μ0For the configuration information of second subcarrier spacing.
3. the method according to claim 1, wherein the first instruction information is used to indicate the target frequency
The corresponding shift state of offset；The target offset amount includes frequency offseting value and the shift state；The shift state
It include: not deviate, deviated to the center frequency point direction lower than the first carrier, to the center frequency point for being higher than the first carrier
Direction offset；Wherein, when the shift state is not deviate, then the frequency offseting value is 0.
4. according to the method described in claim 3, it is characterized in that, the shift state indicated in the first instruction information
For the offset of center frequency point direction or the center frequency point to higher than the first carrier to lower than the first carrier
Direction deviate when, it is described according to the configuration information and it is described first instruction information, determine target frequency offset, comprising:
The shift state is determined according to the first instruction information, and the frequency shift (FS) is determined according to the configuration information
Value.
5. according to the method described in claim 4, it is characterized in that, described determine the frequency shift (FS) according to the configuration information
Value, comprising:
When the frequency of the first carrier belongs to first frequency range, according to the configuration information and third preset formula,
Calculate the frequency offseting value；The third preset formula are as follows:Between the subcarrier that the first frequency range is supported
Every configuration information be less than or equal to 2；
Alternatively,
When the frequency of the first carrier belongs to second frequency range, according to the configuration information and the 4th preset formula,
Calculate the frequency offseting value；4th preset formula are as follows:Between the subcarrier that the second frequency range is supported
Every configuration information be greater than or equal to 2；
Wherein, the first frequency range and the second frequency range be not be overlapped, K1For the frequency offseting value, μ is described matches
Confidence breath.
6. according to the method described in claim 4, it is characterized in that, described determine the frequency shift (FS) according to the configuration information
Value, comprising:
According to the configuration information and the first corresponding relationship, the frequency offseting value is determined；Wherein, first corresponding relationship
It include: the corresponding relationship between the configuration information and the frequency offseting value.
7. method according to any one of claims 1 to 6, which is characterized in that the first instruction information includes the first mark
Know, the first identifier is used to indicate the corresponding shift state of the target frequency offset.
8. a kind of OFDM baseband signal generating means characterized by comprising
Module is obtained, for obtaining the configuration information of the first subcarrier spacing, the frequency and the first instruction information of first carrier；
Wherein, first subcarrier spacing is the corresponding subcarrier spacing of first resource collection transmitted on the first carrier,
The first instruction information is used to indicate the first resource and concentrates the corresponding OFDM baseband signal of public resource block for including
Target frequency offset, the target frequency offset concentrate institute for the center frequency point of the first carrier and the first resource
There is the frequency offset between the center frequency point of the frequency bandwidth of public resource block；
Determining module, the configuration information, the frequency of the first carrier for being obtained according to the acquisition module and described
First instruction information, determines target frequency offset；
Generation module, the target frequency offset and the public resource block for being determined according to the determining module
The data symbol of carrying generates the OFDM baseband signal.
9. device according to claim 8, which is characterized in that the first instruction information includes: what high-level signaling carried
Using the second subcarrier spacing as first frequency offset indicated by unit frequency interval；
The determining module is specifically used for:
When the frequency of the first carrier belongs to first frequency range, according to the first frequency offset, it is described match confidence
Breath and the first preset formula, calculate the target frequency offset；First preset formula are as follows:Described
The configuration information for the subcarrier spacing that one frequency range is supported is less than or equal to 2；
Alternatively,
When the frequency of the first carrier belongs to second frequency range, according to the first frequency offset, it is described match confidence
Breath and the second preset formula, calculate the target frequency offset；Second preset formula are as follows:Described
The configuration information for the subcarrier spacing that two frequency ranges are supported is greater than or equal to 2；
Wherein, the first frequency range and the second frequency range be not be overlapped,For the target frequency offset, K0For
The first frequency offset, μ are the configuration information, μ0For the configuration information of second subcarrier spacing.
10. device according to claim 8, which is characterized in that the first instruction information is used to indicate the target frequency
The corresponding shift state of rate offset；The target offset amount includes frequency offseting value and the shift state；The offset shape
State includes: not deviate, deviate to the center frequency point direction lower than the first carrier, to the center frequency for being higher than the first carrier
The offset of point direction；Wherein, when the shift state is not deviate, then the frequency offseting value is 0.
11. device according to claim 10, which is characterized in that in the offset shape of the first instruction information instruction
State is the center frequency point direction offset to lower than the first carrier or the center frequency to higher than the first carrier
When the offset of point direction, the determining module is specifically used for:
The shift state is determined according to the first instruction information, and the frequency shift (FS) is determined according to the configuration information
Value.
12. device according to claim 11, which is characterized in that the determining module is also used to:
When the frequency of the first carrier belongs to first frequency range, according to the configuration information and third preset formula,
Calculate the frequency offseting value；The third preset formula are as follows:Between the subcarrier that the first frequency range is supported
Every configuration information be less than or equal to 2；
Alternatively,
When the frequency of the first carrier belongs to second frequency range, according to the configuration information and the 4th preset formula,
Calculate the frequency offseting value；4th preset formula are as follows:Between the subcarrier that the second frequency range is supported
Every configuration information be greater than or equal to 2；
Wherein, the first frequency range and the second frequency range be not be overlapped, K1For the frequency offseting value, μ is described matches
Confidence breath.
13. device according to claim 11, which is characterized in that the determining module is also used to:
According to the configuration information and the first corresponding relationship, the frequency offseting value is determined；Wherein, first corresponding relationship
It include: the corresponding relationship between the configuration information and the frequency offseting value.
14. according to the described in any item devices of claim 8 to 13, which is characterized in that the first instruction information includes first
Mark, the first identifier are used to indicate the corresponding shift state of the target frequency offset.
15. 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
Described in any one of claims 1 to 7 the step of OFDM baseband signal generation method.
16. a kind of computer readable storage medium, which is characterized in that store computer journey on the computer readable storage medium
Sequence realizes that the OFDM baseband signal as described in any one of claims 1 to 7 is raw when the computer program is executed by processor
The step of at method.
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| CN113015248A (en) * | 2019-12-20 | 2021-06-22 | 维沃移动通信有限公司 | Position configuration method, terminal equipment and network equipment |
| WO2023216156A1 (en) * | 2022-05-11 | 2023-11-16 | 北京小米移动软件有限公司 | Method and apparatus for transmitting interference offset information, and readable storage medium |
| WO2023237002A1 (en) * | 2022-06-08 | 2023-12-14 | 维沃移动通信有限公司 | Information transmission method and apparatus, and first device and second device |
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