CN107809403A - One parameter configuration method and device - Google Patents
One parameter configuration method and device Download PDFInfo
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- CN107809403A CN107809403A CN201610814841.5A CN201610814841A CN107809403A CN 107809403 A CN107809403 A CN 107809403A CN 201610814841 A CN201610814841 A CN 201610814841A CN 107809403 A CN107809403 A CN 107809403A
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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
-
- 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
-
- 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
- H04L27/2666—Acquisition of further OFDM parameters, e.g. bandwidth, subcarrier spacing, or guard interval length
-
- 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
- H04L27/2668—Details of algorithms
- H04L27/2673—Details of algorithms characterised by synchronisation parameters
- H04L27/2676—Blind, i.e. without using known symbols
- H04L27/2678—Blind, i.e. without using known symbols using cyclostationarities, e.g. cyclic prefix or postfix
-
- 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
- H04L27/2668—Details of algorithms
- H04L27/2681—Details of algorithms characterised by constraints
- H04L27/2688—Resistance to perturbation, e.g. noise, interference or fading
-
- 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
Abstract
The invention discloses a parameter configuration method, including：Determine that OFDM wireless signal forms the number of the cyclic prefix of time slot；Determine the length of the cyclic prefix；The invention also discloses a kind of parameter configuration device.
Description
Technical field
The present invention relates to communication technical field, more particularly to a parameter configuration method and device.
Background technology
OFDM (Orthogonal Frequency Division Multiplexing, OFDM) is as a kind of
The modulation system of wireless signal, channel distortion experienced is mapped to Fast Fourier Transform (FFT) (Inverse Fast Fourier
Transform, IFFT) input in, IFFT conversion result as transmitting modulate signal source；C is adjusted based on OFDM wireless signals
The introducing of the cyclic prefix (Cyclic Prefix, CP) of system, further enhancing the ability of the anti-intersymbol interference of system (ISI),
The orthogonality between subcarrier is also better maintained simultaneously.
IFFT conversion formula be：Wherein, i=0,1..., N-1；
The above method generation signal a number of sampling point of afterbody copy to signal previously as CP, so as to be formed
One complete symbol (Symbol)；CP can protect to the multipath component of signal, prevent intersymbol interference.According to N
The difference of point value and the difference of subcarrier spacing, the length of symbol are also variable；Equipment is transmitted by launching continuous symbol
Data, the continuous signal schematic diagram of equipment transmitting, as shown in figure 1, include the aerial signal of continuous multiple symbols, and symbol lengths
It is indefinite.
Ofdm signal generates schematic diagram, as shown in Fig. 2 the equipment of different transmitted bandwidths can also frequency division in OFDM upward signals
It is multiplexed into together, is received the decode for same radio reception device.
Because the UE of different transmitted bandwidths needs frequency division multiplexing to same frame, and the parameter such as their sample rate, FFT points
It is different；Therefore, the CP of different bandwidth can be caused can not align in time, and then cause effective CP length to reduce, increase difference
Interference between OFDM parameters.
The content of the invention
In view of this, the embodiment of the present invention it is expected to provide a parameter configuration method and device, enables to different bandwidth
CP approximate alignments in time, reduce the interference between different OFDM parameters, reduce the sample rate of equipment.
What the technical scheme of the embodiment of the present invention was realized in：
The embodiment of the present invention provides a parameter configuration method, and methods described includes：Determine that OFDM wireless is believed
Number form time slot cyclic prefix number；Determine the length of the cyclic prefix.
In one embodiment, the number for determining OFDM wireless signal and forming the cyclic prefix of time slot, bag
Include：
The number for determining the cyclic prefix is four cyclic prefix with the first length and three with the second length
Cyclic prefix；Or,
The number for determining the cyclic prefix is two cyclic prefix with the 3rd length and five with the 4th length
Cyclic prefix；Or,
The number for determining the cyclic prefix is a cyclic prefix with the 5th length and six with the 6th length
Cyclic prefix.
In one embodiment, the length for determining the cyclic prefix, including：It is orthogonal frequency to determine first length
Divide multiplexed symbols cycle T 10 times, second length is 8T；It is 12T to determine the 3rd length, and the 4th length is
8T；It is 16T to determine the 5th length, and the 4th length is 8T.
In one embodiment, methods described also includes：Length according to the cyclic prefix determines the cyclic prefix
Distribution sequence is：
{ 10T, 8T, 10T, 8T, 10T, 8T, 10T }, or { 10T, 10T, 8T, 10T, 8T, 10T, 8T }；Or,
{ 12T, 8T, 8T, 12T, 8T, 8T, 8T }, or { 12T, 8T, 8T, 8T, 12T, 8T, 8T }；Or,
{ 16T, 8T, 8T, 8T, 8T, 8T, 8T }.
In one embodiment, after the content of cyclic prefix signal frequency division multiplexing symbol corresponding with the cyclic prefix
The content that face is equal to the length of the cyclic prefix is consistent.
A kind of parameter configuration device is also disclosed in the embodiment of the present invention, and described device includes：First determining module and second true
Cover half block；Wherein,
First determining module, for determining that OFDM wireless signal forms of the cyclic prefix of time slot
Number；
Second determining module, for determining the length of the cyclic prefix.
In one embodiment, first determining module, specifically for determining the number of the cyclic prefix as four tools
There are the cyclic prefix and three cyclic prefix with the second length of the first length；Or,
The number for determining the cyclic prefix is two cyclic prefix with the 3rd length and five with the 4th length
Cyclic prefix；Or, determine that the number of the cyclic prefix is a cyclic prefix with the 5th length and six with the
The cyclic prefix of six length.
In one embodiment, second determining module, it is specifically that OFDM accords with determination first length
10 times of number cycle T, second length is 8T；
It is 12T to determine the 3rd length, and the 4th length is 8T；
It is 16T to determine the 5th length, and the 4th length is 8T.
In one embodiment, described device also includes：3rd determining module, it is true for the length according to the cyclic prefix
The distribution sequence of the cyclic prefix is calmly：
{ 10T, 8T, 10T, 8T, 10T, 8T, 10T }, or { 10T, 10T, 8T, 10T, 8T, 10T, 8T }；Or,
{ 12T, 8T, 8T, 12T, 8T, 8T, 8T }, or { 12T, 8T, 8T, 8T, 12T, 8T, 8T }；Or,
{ 16T, 8T, 8T, 8T, 8T, 8T, 8T }.
In one embodiment, after the content of cyclic prefix signal frequency division multiplexing symbol corresponding with the cyclic prefix
The content that face is equal to the length of the cyclic prefix is consistent.
The method for parameter configuration and device that the embodiment of the present invention is provided, determine that OFDM wireless signals form the CP's of time slot
Number and length, and provide the distribution situation of CP in preferable time slot；In this way, under same system bandwidth, at least four
Different OFDM parameters can face frequency and be multiplexed, and mutual interference is minimum；Described at least two different OFDM parameters
When facing frequency using extremely low sampling rate and LTE and being multiplexed, symbol can also approximate alignment, reduce between different OFDM parameters
Interference.
Brief description of the drawings
Fig. 1 is the continuous signal schematic diagram of equipment of embodiment of the present invention transmitting；
Fig. 2 is that ofdm signal of the embodiment of the present invention generates schematic diagram；
Fig. 3 is OFDM of embodiment of the present invention subcarrier maps schematic diagram；
Fig. 4 is the handling process schematic diagram of the parameter configuration method of the embodiment of the present invention one；
Fig. 5 is the schematic diagram that the OFDM parameters of different sample rates in the embodiment of the present invention coexist；
Fig. 6 is a kind of composition structural representation of parameter configuration device of the embodiment of the present invention.
Embodiment
To more fully understand the embodiment of the present invention, OFDM is described in detail below.
Multiple symbols are included in OFDM each frame signal, the length of the symbol can be different；Due to ofdm signal category
It is therefore, constant when the sample frequency of ofdm signal is in frame in data signal.Therefore the sampling that symbol lengths take with the symbol
Points have a corresponding relation, OFDM subcarrier maps schematic diagram, as shown in Figure 3, it can be seen that symbol lengths and IFFT's is defeated
Enter point value N to be consistent.
With the development of the communication technology, in order to meet the needs of different service types, a variety of differences in 5G system designs
OFDM parameter configurations coexist in same carrier frequency；Wherein, different OFDM parameters include：Different subcarrier spacings, CP/GP length
Degree etc..Using the type of service frequency division multiplexing of different OFDM parameters, if subcarrier spacing or symbol lengths are different, can lead
Cause crosstalk between subcarrier be present between different sub-band.In order to reduce interference as far as possible, need to keep as far as possible between different OFDM parameters
The relation of integral multiple；Such as：It is integral multiple relation between different subcarrier spacings, is integer between different time-domain symbol length
Times relation.
The handling process of the parameter configuration method of the embodiment of the present invention one, as shown in figure 4, comprising the following steps：
Step 101, determine that OFDM wireless signals form the number of the cyclic prefix of time slot；
Specifically, a time slot is made up of the OFDM symbol comprising 7 CP, and the total length in time domain is 960T；It is determined that
The number of the cyclic prefix is four cyclic prefix and three cyclic prefix with the second length with the first length；
Or, the number of the determination cyclic prefix is two cyclic prefix and five circulations with the 4th length with the 3rd length
Prefix；Or, determine that the number of the cyclic prefix is a cyclic prefix with the 5th length and six with the 6th length
Cyclic prefix；
Here, in order to reduce sample rate, first length, the second length, the 3rd length, the 4th length are even number；
Wherein,M is the fraction of positive integer or positive integer；
Data are sent and received to be correct, the sample rate R=n/T of equipment, wherein, n is the fraction of positive integer or positive integer.
Step 102, the length of the cyclic prefix is determined；
Specifically, using ensure the difference of each length it is small be that principle determines first length as OFDM OFDMs
10 times of symbol period T, second length are 8T；It is 12T to determine the 3rd length, and the 4th length is 8T；It is determined that
5th length is 16T, and the 4th length is 8T.
Thus, it may be determined that the distribution situation of the CP is { 10T*4,8T*3 }, or { 12T*2,8T*5 }, or { 16T*1,8T*
6}；
Wherein, described follow is equal to behind the content of cyclic prefix signal OFDM symbol corresponding with the cyclic prefix
The content of the length of ring prefix is consistent；The length of the OFDM symbol is 128T, and the length for the CP that illustrates is A, then length is A
CP content and the 128T length OFDM symbol in count OFDM symbol content one of the length for A forward since last ing
Cause.
The method for parameter configuration also includes：
Step 103, the length according to the cyclic prefix determines the distribution sequence of the cyclic prefix；
Specifically, it is determined that the distribution sequence of the cyclic prefix is { 10T, 8T, 10T, 8T, 10T, 8T, 10T }, or 10T,
10T, 8T, 10T, 8T, 10T, 8T }；Or, { 12T, 8T, 8T, 12T, 8T, 8T, 8T }, or { 12T, 8T, 8T, 8T, 12T, 8T, 8T }；
Or, { 16T, 8T, 8T, 8T, 8T, 8T, 8T }.
CP distribution in the preferable time slot in cycle of the embodiment of the present invention so that different under same system bandwidth
OFDM parameters can be multiplexed with adjacent frequency, and to disturb minimum between the OFDM parameters of multiplexing.
Embodiment one
In the embodiment of the present invention one, a time slot is made up of 7 OFDM symbols, the length difference of the OFDM symbol comprising CP
For { 10T+128T, 8T+128T, 10T+128T, 8T+128T, 10T+128T, 8T+128T, 10T+128T }；Wherein, each OFDM
128T parts come from IFFT conversion behind symbol；In the embodiment of the present invention, m=1,
In the embodiment of the present invention, a kind of preferable sample rate is each T corresponding sampled point for a long time, during n=1, is adopted
Sample rate R=1.92m/s, now, IFFT points are 128 points.
In the embodiment of the present invention, another preferable sample rate is that every 2 T correspond to a sampled point, n=1/2 for a long time
When, sample rate R=0.96m/s, now, IFFT points are 64 points.
In the embodiment of the present invention, there is the OFDM symbol of a 128T length behind each CP, and CP signals are in time domain
It is to be repeated to being equal to the time domain of the CP length behind the OFDM symbol.
The length of the CP of each OFDM symbol in OFDM parameters is provided in the embodiment of the present invention, and is provided preferably
Time slot in CP distribution situation；Pass through the embodiment of the present invention, under same system bandwidth, at least two different OFDM parameters
Frequency can be faced to be multiplexed, and mutual interference is minimum；Described at least two different OFDM parameters utilize extremely low sampling
When speed and LTE face frequency and are multiplexed, symbol can also approximate alignment, reduce the interference between different OFDM parameters；In this way, by adopting
With suitable m and n scaleds, the sample rate of equipment is reduced, the transmitting of equipment is significantly reduced and receives power consumption；CP's sets
Fixed also to keep relatively uniform in each frame, when being multiple proportion between different OFDM parameter sampling rates, OFDM parameters exist
It can also be multiple proportion between each CP points, so simplify the setting of Base-Band Processing process and air interface.
Embodiment two
In the embodiment of the present invention two, a time slot is made up of 7 OFDM symbols, the length difference of the OFDM symbol comprising CP
For { 12T+128T, 8T+128T, 8T+128T, 8T+128T, 12T+128T, 8T+128T, 8T+128T }；Wherein, each OFDM symbols
128T parts come from IFFT conversion behind number；In the embodiment of the present invention, m=1,
In the embodiment of the present invention, a kind of preferable sample rate is each T corresponding sampled point for a long time, during n=1, is adopted
Sample rate R=1.92m/s, now, IFFT points are 128 points.
In the embodiment of the present invention, another preferable sample rate is that every 2 T correspond to a sampled point, n=1/2 for a long time
When, sample rate R=0.96m/s, now, IFFT points are 64 points.
In the embodiment of the present invention, another preferable sample rate is that every 4 T correspond to a sampled point, n=1/4 for a long time
When, sample rate R=0.48m/s, now, IFFT points are 32 points.
In the embodiment of the present invention, there is the OFDM symbol of a 128T length behind each CP, and CP signals are in time domain
It is to be repeated to being equal to the time domain of the CP length behind the OFDM symbol.
The length of the CP of each OFDM symbol in OFDM parameters is provided in the embodiment of the present invention, and is provided preferably
Time slot in CP distribution situation；Pass through the embodiment of the present invention, under same system bandwidth, at least three kinds different OFDM parameters
Frequency can be faced to be multiplexed, and mutual interference is minimum；Described at least two different OFDM parameters utilize extremely low sampling
When speed and LTE face frequency and are multiplexed, symbol can also approximate alignment, reduce the interference between different OFDM parameters；In this way, by adopting
With suitable m and n scaleds, the sample rate of equipment is reduced, the transmitting of equipment is significantly reduced and receives power consumption；CP's sets
Fixed also to keep relatively uniform in each frame, when being multiple proportion between different OFDM parameter sampling rates, OFDM parameters exist
It can also be multiple proportion between each CP points, so simplify the setting of Base-Band Processing process and air interface.
Embodiment three
In the embodiment of the present invention three, a time slot is made up of 7 OFDM symbols, the length difference of the OFDM symbol comprising CP
For { 16T+128T, 8T+128T, 8T+128T, 8T+128T, 8T+128T, 8T+128T, 8T+128T }；Wherein, each OFDM symbols
128T parts come from IFFT conversion behind number；In the embodiment of the present invention, m=1,
In the embodiment of the present invention, a kind of preferable sample rate is each T corresponding sampled point for a long time, during n=1, is adopted
Sample rate R=1.92m/s, now, IFFT points are 128 points.
In the embodiment of the present invention, another preferable sample rate is that every 2 T correspond to a sampled point, n=1/2 for a long time
When, sample rate R=0.96m/s, now, IFFT points are 64 points.
In the embodiment of the present invention, another preferable sample rate is that every 4 T correspond to a sampled point, n=1/4 for a long time
When, sample rate R=0.48m/s, now, IFFT points are 32 points.
In the embodiment of the present invention, another preferable sample rate is that every 8 T correspond to a sampled point, n=1/8 for a long time
When, sample rate R=0.48m/s, now, IFFT points are 16 points.
In the embodiment of the present invention, there is the OFDM symbol of a 128T length behind each CP, and CP signals are in time domain
It is to be repeated to being equal to the time domain of the CP length behind the OFDM symbol.
The length of the CP of each OFDM symbol in OFDM parameters is provided in the embodiment of the present invention, and is provided preferably
Time slot in CP distribution situation；Pass through the embodiment of the present invention, under same system bandwidth, at least four different OFDM parameters
Frequency can be faced to be multiplexed, and mutual interference is minimum；Described at least two different OFDM parameters utilize extremely low sampling
When speed and LTE face frequency and are multiplexed, symbol can also approximate alignment, reduce the interference between different OFDM parameters；In this way, by adopting
With suitable m and n scaleds, the sample rate of equipment is reduced, the transmitting of equipment is significantly reduced and receives power consumption；CP's sets
Fixed also to keep relatively uniform in each frame, when being multiple proportion between different OFDM parameter sampling rates, OFDM parameters exist
It can also be multiple proportion between each CP points, so simplify the setting of Base-Band Processing process and air interface.
Example IV
In the embodiment of the present invention four, a time slot is made up of 7 OFDM symbols, the length difference of the OFDM symbol comprising CP
For { 12T+128T, 8T+128T, 8T+128T, 8T+128T, 12T+128T, 8T+128T, 8T+128T }；Wherein, each OFDM symbols
128T parts come from IFFT conversion behind number；In the embodiment of the present invention, m=1,
In the embodiment of the present invention, a kind of preferable sample rate is each T corresponding sampled point for a long time, during n=1, is adopted
Sample rate R=1.92m/s, now, IFFT points are 128 points.
In the embodiment of the present invention, another preferable sample rate is that every 2 T correspond to a sampled point, n=1/2 for a long time
When, sample rate R=0.96m/s, now, IFFT points are 64 points.
In the embodiment of the present invention, there is the OFDM symbol of a 128T length behind each CP, and CP signals are in time domain
It is to be repeated to being equal to the time domain of the CP length behind the OFDM symbol.
Schematic diagram coexists in the OFDM parameters of different sample rates in the above embodiment of the present invention, as shown in figure 5, two different
The sample rate of OFDM parameters is different, and subcarrier spacing is identical with symbol lengths, can so realize that unprotect band coexists.
The length of the CP of each OFDM symbol in OFDM parameters is provided in the embodiment of the present invention, and is provided preferably
Time slot in CP distribution situation；Pass through the embodiment of the present invention, under same system bandwidth, at least two different OFDM parameters
Frequency can be faced to be multiplexed, and mutual interference is minimum；Described at least two different OFDM parameters utilize extremely low sampling
When speed and LTE face frequency and are multiplexed, symbol can also approximate alignment, reduce the interference between different OFDM parameters；In this way, by adopting
With suitable m and n scaleds, the sample rate of equipment is reduced, the transmitting of equipment is significantly reduced and receives power consumption；CP's sets
Fixed also to keep relatively uniform in each frame, when being multiple proportion between different OFDM parameter sampling rates, OFDM parameters exist
It can also be multiple proportion between each CP points, so simplify the setting of Base-Band Processing process and air interface.
To realize above-mentioned parameter collocation method, the embodiment of the present invention also provides a kind of parameter configuration device, described device
Structure is formed, as shown in fig. 6, including：First determining module 10 and the second determining module 20；Wherein,
First determining module 10, for determining that OFDM wireless signal forms of the cyclic prefix of time slot
Number；
Second determining module 20, for determining the length of the cyclic prefix.
In one embodiment, first determining module 10, the number specifically for determining the cyclic prefix are four
Cyclic prefix and three cyclic prefix with the second length with the first length；Or, determine the number of the cyclic prefix
For two cyclic prefix with the 3rd length and five cyclic prefix with the 4th length；Or, determine the cyclic prefix
Number be a cyclic prefix and six cyclic prefix with the 6th length with the 5th length.
In one embodiment, second determining module, it is specifically that OFDM accords with determination first length
10 times of number cycle T, second length is 8T；
It is 12T to determine the 3rd length, and the 4th length is 8T；
It is 16T to determine the 5th length, and the 4th length is 8T.
In one embodiment, described device also includes：3rd determining module 30, for the length according to the cyclic prefix
The distribution sequence for determining the cyclic prefix is：
{ 10T, 8T, 10T, 8T, 10T, 8T, 10T }, or { 10T, 10T, 8T, 10T, 8T, 10T, 8T }；Or, 12T, 8T,
8T, 12T, 8T, 8T, 8T }, or { 12T, 8T, 8T, 8T, 12T, 8T, 8T }；Or, { 16T, 8T, 8T, 8T, 8T, 8T, 8T }.
In one embodiment, after the content of cyclic prefix signal frequency division multiplexing symbol corresponding with the cyclic prefix
The content that face is equal to the length of the cyclic prefix is consistent.
In one embodiment, a time slot is made up of the OFDM symbol comprising 7 CP, in time domain
Total length is 960T；Wherein,M is the fraction of positive integer or positive integer；
Data are sent and received to be correct, the sample rate R=n/T of equipment, wherein, n is the fraction of positive integer or positive integer.
CP length determined by method for parameter configuration and device provided in an embodiment of the present invention and number of samples are used for equipment
The transmitting and reception of ofdm signal.
It should be noted that in actual applications, first determining module 10, the second determining module 20 and the 3rd determine
The function of module 30 can by centrally located processor (CPU) or microprocessor (MPU) or digital signal processor (DSP) or
Programmable gate array (FPGA) or other IC Hardwares are realized.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.
Claims (10)
- A 1. parameter configuration method, it is characterised in that methods described includes：Determine that OFDM wireless signal forms the number of the cyclic prefix of time slot；Determine the length of the cyclic prefix.
- 2. method for parameter configuration according to claim 1, it is characterised in that the determination OFDM wireless signal structure Into the number of the cyclic prefix of time slot, including：The number for determining the cyclic prefix is four cyclic prefix and three following with the second length with the first length Ring prefix；Or,The number for determining the cyclic prefix is two cyclic prefix and five following with the 4th length with the 3rd length Ring prefix；Or,The number for determining the cyclic prefix is a cyclic prefix and six following with the 6th length with the 5th length Ring prefix.
- 3. method for parameter configuration according to claim 1 or claim 2, it is characterised in that the length for determining the cyclic prefix, Including：10 times that first length is OFDM symbol cycle T are determined, second length is 8T；It is 12T to determine the 3rd length, and the 4th length is 8T；It is 16T to determine the 5th length, and the 4th length is 8T.
- 4. method for parameter configuration according to claim 3, it is characterised in that methods described also includes：Before the circulation The length sewed determines that the distribution sequence of the cyclic prefix is：{ 10T, 8T, 10T, 8T, 10T, 8T, 10T }, or { 10T, 10T, 8T, 10T, 8T, 10T, 8T }；Or,{ 12T, 8T, 8T, 12T, 8T, 8T, 8T }, or { 12T, 8T, 8T, 8T, 12T, 8T, 8T }；Or,{ 16T, 8T, 8T, 8T, 8T, 8T, 8T }.
- 5. method for parameter configuration according to claim 1 or claim 2, it is characterised in that the content of the cyclic prefix signal and institute The content for stating the length corresponding to cyclic prefix behind frequency division multiplexing symbol equal to the cyclic prefix is consistent.
- 6. a kind of parameter configuration device, it is characterised in that described device includes：First determining module and the second determining module；Its In,First determining module, for determining that OFDM wireless signal forms the number of the cyclic prefix of time slot；Second determining module, for determining the length of the cyclic prefix.
- 7. parameter configuration device according to claim 6, it is characterised in that first determining module, specifically for determining The number of the cyclic prefix is four cyclic prefix and three cyclic prefix with the second length with the first length； Or,The number for determining the cyclic prefix is two cyclic prefix and five following with the 4th length with the 3rd length Ring prefix；Or,The number for determining the cyclic prefix is a cyclic prefix and six following with the 6th length with the 5th length Ring prefix.
- 8. according to the parameter configuration device of claim 6 or 7, it is characterised in that second determining module, specific determination First length is 10 times of OFDM symbol cycle T, and second length is 8T；It is 12T to determine the 3rd length, and the 4th length is 8T；It is 16T to determine the 5th length, and the 4th length is 8T.
- 9. parameter configuration device according to claim 8, it is characterised in that described device also includes：3rd determining module, use The distribution sequence for determining the cyclic prefix in the length according to the cyclic prefix is：{ 10T, 8T, 10T, 8T, 10T, 8T, 10T }, or { 10T, 10T, 8T, 10T, 8T, 10T, 8T }；Or,{ 12T, 8T, 8T, 12T, 8T, 8T, 8T }, or { 12T, 8T, 8T, 8T, 12T, 8T, 8T }；Or,{ 16T, 8T, 8T, 8T, 8T, 8T, 8T }.
- 10. according to the parameter configuration device of claim 6 or 7, it is characterised in that the content of the cyclic prefix signal and institute The content for stating the length corresponding to cyclic prefix behind frequency division multiplexing symbol equal to the cyclic prefix is consistent.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610814841.5A CN107809403A (en) | 2016-09-09 | 2016-09-09 | One parameter configuration method and device |
| PCT/CN2017/100931 WO2018045984A1 (en) | 2016-09-09 | 2017-09-07 | Parameter configuration method and apparatus, and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610814841.5A CN107809403A (en) | 2016-09-09 | 2016-09-09 | One parameter configuration method and device |
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| Publication Number | Publication Date |
|---|---|
| CN107809403A true CN107809403A (en) | 2018-03-16 |
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| CN201610814841.5A Pending CN107809403A (en) | 2016-09-09 | 2016-09-09 | One parameter configuration method and device |
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| WO (1) | WO2018045984A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022166975A1 (en) * | 2021-02-08 | 2022-08-11 | 展讯通信（上海）有限公司 | Cyclic prefix extension generation and indication method and apparatus, and readable storage medium |
| CN115211039A (en) * | 2020-02-27 | 2022-10-18 | 哲库科技有限公司 | Bus traffic reduction mechanism and related method of operation |
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| CN101286787A (en) * | 2007-04-11 | 2008-10-15 | 北京三星通信技术研究有限公司 | Device and method to transfer synchronous channel |
| CN101425839B (en) * | 2007-10-31 | 2011-09-14 | 电信科学技术研究院 | Method, system and apparatus for transmission offset determination |
| CN101742698B (en) * | 2008-11-10 | 2012-10-17 | 华为技术有限公司 | Indication and acquisition method, device and system of CP length configuration |
| EP2529525B1 (en) * | 2010-01-28 | 2014-09-17 | Telefonaktiebolaget L M Ericsson (PUBL) | Method and arrangement in a telecommunication system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115211039A (en) * | 2020-02-27 | 2022-10-18 | 哲库科技有限公司 | Bus traffic reduction mechanism and related method of operation |
| CN115211039B (en) * | 2020-02-27 | 2023-09-01 | 哲库科技(上海)有限公司 | Method for operating a communication device, communication device and non-transitory computer readable medium |
| WO2022166975A1 (en) * | 2021-02-08 | 2022-08-11 | 展讯通信（上海）有限公司 | Cyclic prefix extension generation and indication method and apparatus, and readable storage medium |
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| WO2018045984A1 (en) | 2018-03-15 |
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