CN105519063B - A kind of method, apparatus and system for sending, receiving data - Google Patents
A kind of method, apparatus and system for sending, receiving data Download PDFInfo
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- CN105519063B CN105519063B CN201480000126.7A CN201480000126A CN105519063B CN 105519063 B CN105519063 B CN 105519063B CN 201480000126 A CN201480000126 A CN 201480000126A CN 105519063 B CN105519063 B CN 105519063B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
- H04L5/0046—Determination of how many bits are transmitted on different sub-channels
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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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- Computer Networks & Wireless Communication (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
Abstract
The invention discloses a kind of method, apparatus and system for sending, receiving data, in this scenario, each subcarrier uses channel coding method corresponding with the bit number of load is supported to encode data, therefore, each subcarrier obtains maximum gain, is all made of peak transfer rate and sends data, therefore, it solves that serious waste of resources existing in the prior art, gain be lower, the lower defect of transmission rate, improves resource utilization, improves gain and transmission rate.
Description
Technical field
The present invention relates to the data transmission technology of the communications field, in particular to a kind of method, apparatus for sending, receiving data
And system.
Background technique
Data flow may generate error code due to various reasons in the transmission, thus make receiving end generate image jump and not
Phenomena such as continuous.In order to solve this problem, it proposes and respective treated scheme is carried out to data stream by channel coding, make to pass
Defeated system has certain error correcting capability and anti-interference ability, can greatly avoid the generation of error code in data stream.
The process of channel coding is that some symbols are inserted in source traffic, carries out sentencing mistake and entangle in receiving end to reach
Wrong purpose.In the fixed channel of bandwidth, total transmission code rate is also fixation, since channel coding increases data volume,
Its result can only transmit useful information code rate as cost to reduce, wherein code efficiency is useful bit number divided by total bit
Several ratio, different coding modes, code efficiency are different.
Currently, only with a kind of coding mode in the entire available band of a system, although which can also reach
To the generation for avoiding error code in data stream, still, for this single coding mode, coding gain is not in institute
Scene under be all it is highest, in entire available frequency band, the SNR(Signal to Noise of low frequency subcarrier
Ratio, signal-to-noise ratio) it is higher, the bit number that can be carried is more, and opposite expense is less, thus, it is possible to obtain higher increasing
Benefit, and the SNR of high-frequency subcarrier is lower, the bit number that can be carried is less, and opposite expense is larger, therefore, obtainable
The case where gain is less, and the transmission rate of data flow is lower, the space that gain is also promoted, there are the wastings of resources.This list
One coding mode, so that the case where transmission rate of the data flow of whole system is lower, and there are the wastings of resources.
Summary of the invention
The embodiment of the present invention provides a kind of method, apparatus and system for sending, receiving data, to solve in the prior art
Existing serious waste of resources, the problem that gain is lower, transmission rate is lower.
Specific technical solution provided in an embodiment of the present invention is as follows:
In a first aspect, providing a kind of method for sending data, comprising:
Determine the Signal to Noise Ratio (SNR) of subcarrier in assigned frequency band；
Determine that the subcarrier supports the bit number of load according to the SNR；And
Channel coding side by the corresponding channel coding method of bit number for supporting load, as the subcarrier
Formula；
Channel coding is carried out to the data sent on the subcarrier using the channel coding method, and will be after coding
Data sent on the subcarrier.
With reference to first aspect, in the first possible implementation, the signal-to-noise ratio of subcarrier in assigned frequency band is determined
SNR is specifically included:
Preset fixed sequence program signal is sent to receiving end in the subcarrier；
Receive that the receiving end sends according to the fixed sequence program signal and receive what the difference between signal was determined
SNR。
With reference to first aspect or the first possible implementation of first aspect, second of possible realization side
In formula, determines that the subcarrier supports the bit number of load according to the SNR, specifically includes:
Determine that the subcarrier supports the bit number of load according to the SNR using shannon formula；
Wherein, the subcarrier supports the bit number of load to be positively correlated with the SNR.
With reference to first aspect, in the third possible implementation, by the corresponding letter of bit number for supporting load
Road coding mode is specifically included as the channel coding method of the subcarrier:
Determine the corresponding maxgain value of bit number for supporting load；
And using the corresponding channel coding method of the maxgain value as the channel coding method of the subcarrier.
With reference to first aspect, in the fourth possible implementation, the bit number for supporting load is corresponding
Channel coding method, after the channel coding method as the subcarrier, further includes:
The signal for carrying the channel coding method information of the subcarrier is sent to receiving end.
With reference to first aspect, in a fifth possible implementation, the bit number for supporting load is corresponding
Channel coding method, after the channel coding method as the subcarrier, using the channel coding method in the son
The data sent on carrier wave carry out before channel coding, further includes:
Determine that the subcarrier carries out the memory of channel coding consumption using corresponding channel coding method；
If the memory of the consumption is greater than preset value, the corresponding channel coding method of the subcarrier is redefined, directly
The preset value is less than using the memory that corresponding channel coding method carries out channel coding consumption to the subcarrier.
The 5th kind of possible implementation with reference to first aspect, in a sixth possible implementation, after coding
Data sent on the subcarrier before, further includes:
Rate adaptation operating is carried out to the data after the coding.
Second aspect provides a kind of method for receiving data, comprising:
Receive the signal of the channel coding method information for the carrying subcarrier that transmitting terminal is sent；
Using channel decoding process corresponding with the channel coding method, to the data arrived in the received over subcarriers
Carry out channel decoding.
In conjunction with second aspect, in the first possible implementation, in the carrying subcarrier for receiving transmitting terminal transmission
Before the signal of channel coding method information, further includes:
Receive the preset fixed sequence program signal that transmitting terminal is sent in the subcarrier；
The Signal to Noise Ratio (SNR) determined according to the fixed sequence program signal and the practical difference received between signal；
The SNR is sent to the transmitting terminal, so that the transmitting terminal determines the subcarrier according to the SNR
Channel coding method.
The third aspect provides a kind of device for sending data, comprising:
Signal-to-noise ratio determination unit, for determining the Signal to Noise Ratio (SNR) of subcarrier in assigned frequency band；
Bit number determination unit, for determining that the subcarrier supports the bit number of load according to the SNR；
Channel coding method determination unit, for making the corresponding channel coding method of bit number for supporting load
For the channel coding method of the subcarrier；
Transmission unit, for carrying out channel volume to the data sent on the subcarrier using the channel coding method
Code, and the data after coding are sent on the subcarrier.
In conjunction with the third aspect, in the first possible implementation, the signal-to-noise ratio determination unit is specifically used for:
Preset fixed sequence program signal is sent to receiving end in the subcarrier；
Receive that the receiving end sends according to the fixed sequence program signal and receive what the difference between signal was determined
SNR。
In conjunction with the possible implementation of the first of the third aspect or the third aspect, second of possible realization side
In formula, the bit number determination unit is specifically used for:
Determine that the subcarrier supports the bit number of load according to the SNR using shannon formula；
Wherein, the subcarrier supports the bit number of load to be positively correlated with the SNR.
In conjunction with the third aspect, in the third possible implementation, the channel coding method determination unit is specifically used
In:
Determine the corresponding maxgain value of bit number for supporting load；
And using the corresponding channel coding method of the maxgain value as the channel coding method of the subcarrier.
In conjunction with the third aspect, in the fourth possible implementation, the transmission unit is also used to:
The signal for carrying the channel coding method information of the subcarrier is sent to receiving end.
Further include judging unit in a fifth possible implementation in conjunction with the third aspect, determines that the subcarrier is adopted
The memory of channel coding consumption is carried out with corresponding channel coding method；
If the memory of the consumption is greater than preset value, the corresponding channel coding method of the subcarrier is redefined, directly
The preset value is less than using the memory that corresponding channel coding method carries out channel coding consumption to the subcarrier.
In conjunction with the 5th kind of possible implementation of the third aspect, in a sixth possible implementation, the transmission
Unit is also used to:
Rate adaptation operating is carried out to the data after the coding.
Fourth aspect provides a kind of device for receiving data, comprising:
Receiving unit, the signal of the channel coding method information of the carrying subcarrier for receiving transmitting terminal transmission；
Decoding unit, for using channel decoding process corresponding with the channel coding method, in the subcarrier
On the data that receive carry out channel decoding.
It further include SNR determination unit in the first possible implementation in conjunction with fourth aspect, the SNR determines single
Member is used for:
Receive the preset fixed sequence program signal that transmitting terminal is sent in the subcarrier；
The Signal to Noise Ratio (SNR) determined according to the fixed sequence program signal and the practical difference received between signal；
The SNR is sent to the transmitting terminal, so that the transmitting terminal determines the subcarrier according to the SNR
Channel coding method.
5th aspect, provides a kind of data Transmission system, comprising:
The device as described above for sending data, and the device as described above for receiving data.
The present invention has the beneficial effect that:
Under the prior art, only with a kind of coding mode in the entire available band of a system, due to each
The SNR of subcarrier may be different, then gain is possible to different, the lower, resource that in turn results in when sending data that there are transmission rates
The case where waste, and in method provided in an embodiment of the present invention, determine the SNR of subcarrier in assigned frequency band；Son is determined according to SNR
Carrier wave supports the bit number of load；And the corresponding channel coding method of bit number that will support load, the channel as subcarrier
Coding mode；Channel coding is carried out to the data that send on sub-carriers using channel coding method, and by the data after coding
It sends on sub-carriers, in this scenario, each subcarrier is using the corresponding channel coding method pair of bit number for supporting load
Data are encoded, it is thereby achieved that each subcarrier, which is all made of peak transfer rate, sends data, are most increased
Therefore benefit solves that serious waste of resources existing in the prior art, gain be lower, the lower defect of transmission rate, improve
Resource utilization improves gain and transmission rate.
Detailed description of the invention
Fig. 1 is the method flow diagram that data are sent in the embodiment of the present invention；
Fig. 2 is one embodiment that data are sent in the embodiment of the present invention；
Fig. 3 is one embodiment that data are received in the embodiment of the present invention；
Fig. 4 is the illustrative view of functional configuration that the device of data is sent in the embodiment of the present invention；
Fig. 5 is the illustrative view of functional configuration that the device of data is received in the embodiment of the present invention；
Fig. 6 is the schematic diagram of data receiving-transmitting system in the embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
All other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
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".
The techniques described herein may be used in various communication systems, such as current 2G, 3G communication system and next generation communication
System, such as global system for mobile communications (GSM, Global System for Mobile communications), code point are more
Location (CDMA, Code Division Multiple Access) system, time division multiple acess (TDMA, Time Division
Multiple Access) system, wideband code division multiple access (WCDMA, Wideband Code Division Multiple
Access Wireless), frequency division multiple access (FDMA, Frequency Division Multiple Addressing) system, just
Frequency division multiple access (OFDMA, the Orthogonal Frequency-Division Multiple Access) system of friendship, single carrier
FDMA (SC-FDMA) system, General Packet Radio Service (GPRS, General Packet Radio Service) system are long
Phase evolution (LTE, Long Term Evolution) system and other such communication systems.
In the embodiment of the present invention, a kind of method for sending data is provided, in this method: determining subcarrier in assigned frequency band
SNR；Determine that subcarrier supports the bit number of load according to SNR；And the corresponding channel coding method of bit number that will support load,
Channel coding method as subcarrier；Channel coding is carried out to the data sent on sub-carriers using channel coding method,
And send the data after coding on sub-carriers, in this scenario, each subcarrier is corresponding using the bit number of support load
Channel coding method data are encoded, it is thereby achieved that each subcarrier be all made of peak transfer rate send number
According to, equal acquisition maximum gain, therefore, solve serious waste of resources existing in the prior art, gain be lower, transmission rate compared with
Low defect improves resource utilization, improves gain and transmission rate.
The preferred embodiment of the present invention is described in detail with reference to the accompanying drawing.
As shown in fig.1, providing a kind of method for sending data in the embodiment of the present invention, the detailed process of this method is such as
Under:
Step 100: determining the SNR of subcarrier in assigned frequency band；
Step 110: determining that subcarrier supports the bit number of load according to SNR；And
Step 120: will support the corresponding channel coding method of bit number of load, the channel coding side as subcarrier
Formula；
Step 130: channel coding being carried out to the data sent on sub-carriers using channel coding method, and will be after coding
Data send on sub-carriers.
In the embodiment of the present invention, the subcarrier in step 100 can be a subcarrier, be also possible to multiple subcarriers,
Wherein, when for multiple subcarriers, as unit of each subcarrier, it is determined channel coding method, at this point, each subcarrier
Channel coding method can be respectively different, alternatively, can also by multiple subcarrier groupings, as unit of each group of subcarrier,
It is determined channel coding method, each group of subcarrier respectively corresponds different channel coding methods, same group of subcarrier pair
Answer identical channel coding method.
It, optionally, can be in the following way when determining the SNR of subcarrier in assigned frequency band in the embodiment of the present invention:
Preset fixed sequence program signal is sent to receiving end in subcarrier；
Receive the SNR determined according to the difference between fixed sequence program signal and reception signal that receiving end is sent.
Certainly, if it is confirmed that in assigned frequency band when the SNR of each group of subcarrier in step 100, at this point, for any one
Group subcarrier, sends known fixed training signal at each subcarrier, and receiving end is calculated in the subcarrier reception signal
The difference between signal and known training signal is received, and SNR is calculated according to difference, calculates the average value of whole SNR, and will
SNR of the average value of SNR as this group of subcarrier, the SNR for calculating subcarrier is the prior art, is no longer carried out herein one by one in detail
It states.
In the embodiment of the present invention, according to SNR determine subcarrier support load bit number mode there are many, optionally,
It can be in the following way:
Determine that the subcarrier supports the bit number of load according to the SNR of the subcarrier using shannon formula；
Wherein, subcarrier supports the SNR of the bit number and the subcarrier of load to be positively correlated.
In practical applications, it is positively correlated (Positive correlation), refers to that two variables variation directions are identical, one
When a variable is descending or ascending variation, another variable is also descending or ascending variation.I.e. its data is bent
The tangent slope of line is consistently greater than zero.Such as height and weight, height is longer, and weight is heavier.That is, in positively related feelings
Under condition, the variation that the same direction occurs with the variation of another variable for a variable (two variables while becoming larger or becoming
It is small).Wherein, cause variation amount be called independent variable (i.e. oneself changed amount), another variable be called dependent variable (i.e. with
Independent variable variation amount).In the embodiment of the present invention, subcarrier supports the bit number of load to increase with the raising of SNR, with
The reduction of SNR and reduce.
It is above-mentioned only to determine that any one subcarrier supports one embodiment of the bit number of load according to corresponding SNR,
In practical application, there are also other a variety of implementations, are no longer described in detail one by one herein.
In the embodiment of the present invention, shannon formula is as shown in formula one:
B=log2 (1+SNR) (formula one)
Wherein, B is the bit number for supporting load.
In the embodiment of the present invention, there are many channel coding methods, is Reed Solomon code, convolutional code, Turbo optionally
Code, TCM(Terllis Coded Modulation, also known as trellis coded modulation) code, LDPC (Low Density Parity
Check Code, low-density checksum) one of code or any combination, certainly, in practical applications, there are also its other party
Formula is no longer described in detail one by one herein.
In the embodiment of the present invention, the corresponding channel coding method of bit number of load will be supported, the channel as subcarrier
There are many realization rates of coding mode, for example, can be in the following way:
Determine the corresponding maxgain value of bit number for supporting load；
And using the corresponding channel coding method of maxgain value as the channel coding method of subcarrier.
Certainly, it there are also other implementations, is no longer described in detail one by one herein.
In the embodiment of the present invention, subcarrier, support load bit number, gain, channel coding corresponding relationship such as 1 institute of table
Show:
1 subcarrier of table, support load bit number, gain, channel coding corresponding relationship
| Subcarrier | Support the bit number of load | Channel coding | Gain |
| Subcarrier 1 | 8 | TCM code | 50 |
| Subcarrier 1 | 8 | LDPC code | 100 |
| Subcarrier 1 | 8 | Turbo code | 150 |
| Subcarrier 2 | 18 | LDPC code | 200 |
| Subcarrier 2 | 18 | TCM code | 250 |
| Subcarrier 2 | 18 | Turbo code | 400 |
| Subcarrier 3 | 8 | LDPC code | 700 |
| Subcarrier 3 | 8 | TCM code | 250 |
| Subcarrier 3 | 8 | Turbo code | 300 |
As shown in table 1, subcarrier 1 supports that the bit number of load is 8, and the corresponding channel coding of maximum gain 150 is Turbo
Code, therefore, subcarrier 1 carry out channel coding to sent data using Turbo code, and the data after coding are sent out
It send；Subcarrier 2 supports that the bit number of load is 18, and the corresponding channel coding of maximum gain 400 is Turbo code, therefore, sub- load
Wave 2 carries out channel coding to sent data using Turbo code, and the data after coding are sent；Subcarrier 3 is supported
The bit number of load is 8, and the corresponding channel coding of maximum gain 700 is LDPC code, and therefore, subcarrier 3 is treated using LDPC code
The data of transmission carry out channel coding, and the data after coding are sent.
In practical applications, since every kind of channel coding method all includes different code length, for example, LDPC code,
It includes the code lengths such as 1/2,2/3,5/6, and wherein molecules present effective word joint number, denominator represent total bytes, and denominator subtracts
The resulting byte number of molecule represents expense, that is to say, that and the code efficiency of different coding length is different, therefore, 1 the inside of table
Gain be more all will be based in identical code efficiency, the gain of different coding mode is compared.
Since the data that receiving end sends the transmitting terminal received carry out channel coding, the embodiment of the present invention
In, will support load the corresponding channel coding method of bit number further include after the channel coding method of subcarrier
Following operation:
The signal for carrying the channel coding method information of subcarrier is sent to receiving end.
The purpose of aforesaid operations is, so that receiving end, which obtains, receives channel coding side used by the subcarrier of data
Formula, and then go to be decoded the data received on the channel according to corresponding channel decoding process.
In practical applications, if subcarrier, which is all made of the corresponding channel coding of maximum gain, carries out channel coding to data
When, memory consumption is likely larger than preset value, for example, preset value is the memory source that sends the device of data and can provide, therefore,
Channel coding side in the embodiment of the present invention, in the corresponding channel coding method of bit number that will support load, as subcarrier
Further include operating as follows before carrying out channel coding to the data sent on sub-carriers using channel coding method after formula:
Determine that subcarrier carries out the memory of channel coding consumption using corresponding channel coding method；
If the memory of consumption is greater than preset value, the corresponding channel coding method of subcarrier is redefined, until subcarrier
Preset value is less than using the memory that corresponding channel coding method carries out channel coding consumption.
Certainly, if the memory of consumption is less than preset value, channel coding method is directlyed adopt on sub-carriers sending
Data carry out channel coding, do not need to redefine the corresponding channel coding method of subcarrier.
For example, frequency band shares 3 groups of subcarriers: subcarrier 1, subcarrier 2, subcarrier 3, subcarrier 1 uses channel coding c1
1 mode (needing to consume memory m1), subcarrier 2 use channel coding c2 mode (needing to consume memory m2), subcarrier 3 use
2 modes (needing to consume memory m3) of channel coding c1, and the device that m1+m2+m3 is greater than practical transmission data is available interior
It deposits, then needs to redefine the channel coding method of subcarrier, for example, redefining the channel coding method of subcarrier 1, use
2 modes (needing to consume memory m4) of channel coding c1, if the device that m4+m2+m3 is less than practical transmission data is available interior
It deposits, at this point, 2 modes, channel coding c2 mode, letter of channel coding c1 are respectively adopted in subcarrier 1, subcarrier 2, subcarrier 3
2 modes that road encodes c1 carry out channel coding to sent data, and send to the data after coding.
In transmission process, in order to flexibly grasp the transmission rate of data, in the embodiment of the present invention, by the data after coding
Before being sent on this group of subcarrier, data to be sent are also subjected to rate adaptation operating and (including punch operation or repeat to grasp
Make).It is mistake (the i.e. partial information weight occurred in detection/correction transmission process using correlation in channel coding
Multiple, loss, error can still restore normal sequence).Cheesing techniques are exactly to utilize this characteristic, and partial redundance information loss is gone forward side by side
Rearrangement, to adapt to new transmission rate, to receiving end after again by decoding restore prime information sequence.And repeat techniques are exactly pair
Partial information is repeated to realize lower code rate.
That is, further including operating as follows before the data after coding are sent on sub-carriers:
Rate adaptation operating is carried out to the data after coding.
Wherein, rate adaptation operating is carried out to data, comprising:
Punch operation is carried out to data or repetitive operation is carried out to data.
In the embodiment of the present invention, step 100-130 can be particularly applicable in DSL(Digital Subscriber Line, number
Word subscribers' line) in, e.g., in the ADSL in the VDSL in DSL or in DSL.
As shown in fig.2, providing a kind of method for receiving data in the embodiment of the present invention, the detailed process of this method is such as
Under:
Step 200: receiving the signal of the channel coding method information for the carrying subcarrier that transmitting terminal is sent；
Step 210: channel decoding process corresponding with channel coding method is used, to the data received on sub-carriers
Carry out channel decoding.
In the embodiment of the present invention, receive transmitting terminal send carrying subcarrier channel coding method information signal it
Before, further include operating as follows:
Receive the preset fixed sequence program signal that transmitting terminal is sent in subcarrier；
The SNR determined according to fixed sequence program signal and the practical difference received between signal；
SNR is sent to transmitting terminal, so that transmitting terminal determines the channel coding method of subcarrier according to SNR.
Concrete application scene is given below in embodiment for a better understanding of the present invention, for the process for sending data, makees
It is described in further detail out, as shown in Figure 3:
Step 300: determining the corresponding SNR of 3 groups of subcarriers in frequency band；
Step 310: determining that 3 groups of subcarriers support that the bit number of load is respectively 8,18,8 respectively according to formula one；
Wherein, 3 groups of subcarriers: subcarrier 1, subcarrier 2, subcarrier 3 are compiled with the bit number of load, channel is supported respectively
Code, the corresponding relationship of gain are as shown in table 1.
Step 320: determining the corresponding channel coding of 1 maximum gain of subcarrier for Turbo code, subcarrier 2 most according to table 1
The corresponding channel coding of large gain is Turbo code, the corresponding channel coding of 3 maximum gain of subcarrier is LDPC code；
Step 330: Turbo code, Turbo code, LDPC code is respectively adopted in subcarrier 1, subcarrier 2, subcarrier 3, treats
The data of transmission carry out channel coding；
Step 340: punch operation being carried out to the data after coding, and the data after punching are sent.
It based on the above-mentioned technical proposal, should as shown in fig.4, the embodiment of the present invention provides a kind of device 400 for sending data
Device 400 includes signal-to-noise ratio determination unit 40, bit number determination unit 41, channel coding method determination unit 42, and is sent single
Member 43, wherein
Signal-to-noise ratio determination unit 40, for determining the Signal to Noise Ratio (SNR) of subcarrier in assigned frequency band；
Bit number determination unit 41, for determining that subcarrier supports the bit number of load according to SNR；
Channel coding method determination unit 42, for that will support the corresponding channel coding method of bit number of load, as
The channel coding method of subcarrier；
Transmission unit 43, for carrying out channel coding to the data sent on sub-carriers using channel coding method, and
Data after coding are sent on sub-carriers.
Optionally, in the embodiment of the present invention, signal-to-noise ratio determination unit 40 is specifically used for:
Preset fixed sequence program signal is sent to receiving end in subcarrier；
Receive the SNR determined according to the difference between fixed sequence program signal and reception signal that receiving end is sent.
Optionally, in the embodiment of the present invention, bit number determination unit 41 is specifically used for:
Determine that subcarrier supports the bit number of load according to SNR using shannon formula；
Wherein, subcarrier supports the bit number of load to be positively correlated with SNR.
Optionally, in the embodiment of the present invention, channel coding method determination unit 42 is specifically used for:
Determine the corresponding maxgain value of bit number for supporting load；
And using the corresponding channel coding method of maxgain value as the channel coding method of subcarrier.
It optionally, further include judging unit 44, judging unit 44 is for determining subcarrier use pair in the embodiment of the present invention
The channel coding method answered carries out the memory of channel coding consumption；
If the memory of consumption is greater than preset value, the corresponding channel coding method of subcarrier is redefined, until subcarrier
Preset value is less than using the memory that corresponding channel coding method carries out channel coding consumption.
Further, in the embodiment of the present invention, transmission unit 43 is also used to:
Rate adaptation operating is carried out to the data after coding.
It based on the above-mentioned technical proposal, should as shown in fig.5, the embodiment of the present invention provides a kind of device 500 for receiving data
Device 500 includes receiving unit 50, decoding unit 51, wherein
Receiving unit 50, the signal of the channel coding method information of the carrying subcarrier for receiving transmitting terminal transmission；
Decoding unit 51, for using channel decoding process corresponding with channel coding method, to receiving on sub-carriers
The data arrived carry out channel decoding.
Further, in the embodiment of the present invention, which further includes SNR determination unit 52, and SNR determination unit 52 is used for:
Receive the preset fixed sequence program signal that transmitting terminal is sent in subcarrier；
The Signal to Noise Ratio (SNR) determined according to fixed sequence program signal and the practical difference received between signal；
SNR is sent to transmitting terminal, so that transmitting terminal determines the channel coding method of subcarrier according to SNR.
Based on the above-mentioned technical proposal, as shown in fig.6, the embodiment of the present invention provides a kind of data receiving-transmitting system, the data
Receive-transmit system includes:
The device 400 of transmission data as shown in Figure 4, and the device 500 of reception data as shown in Figure 4.
In conclusion in the embodiment of the present invention, a kind of method for sending data is provided, in this method: determining assigned frequency band
The SNR of interior subcarrier；Determine that subcarrier supports the bit number of load according to SNR；And the corresponding letter of bit number that will support load
Road coding mode, the channel coding method as subcarrier；Using channel coding method to the data sent on sub-carriers into
Row channel coding, and the data after coding are sent on sub-carriers, in this scenario, each subcarrier is using support load
The corresponding channel coding method of bit number encodes data, it is thereby achieved that each subcarrier is all made of maximum transmitted
Rate sending data, acquisition maximum gain, therefore, solve serious waste of resources existing in the prior art, gain it is lower,
The lower defect of transmission rate improves resource utilization, improves gain and transmission rate.
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device of present one or more flows of the flowchart and/or the function in one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
Function in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function in a box or multiple boxes.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, those skilled in the art can carry out various modification and variations without departing from this hair to the embodiment of the present invention
The spirit and scope of bright embodiment.In this way, if these modifications and variations of the embodiment of the present invention belong to the claims in the present invention
And its within the scope of equivalent technologies, then the present invention is also intended to include these modifications and variations.
Claims (19)
1. a kind of method for sending data characterized by comprising
Determine the Signal to Noise Ratio (SNR) of subcarrier in assigned frequency band；
Determine that the subcarrier supports the bit number of load according to the SNR；And
By the corresponding channel coding method of bit number for supporting load, as the channel coding method of the subcarrier,
In, the corresponding channel coding method of at least two subcarriers is different；
Channel coding is carried out to the data that send on the subcarrier using the channel coding method, and by the number after coding
It is sent according on the subcarrier.
2. the method as described in claim 1, which is characterized in that determine the Signal to Noise Ratio (SNR) of subcarrier in assigned frequency band, it is specific to wrap
It includes:
Preset fixed sequence program signal is sent to receiving end in the subcarrier；
Receive the SNR determined according to the difference between the fixed sequence program signal and reception signal that the receiving end is sent.
3. method according to claim 1 or 2, which is characterized in that determine that the subcarrier supports load according to the SNR
Bit number specifically includes:
Determine that the subcarrier supports the bit number of load according to the SNR using shannon formula；
Wherein, the subcarrier supports the bit number of load to be positively correlated with the SNR.
4. the method as described in claim 1, which is characterized in that by the corresponding channel coding side of bit number for supporting load
Formula is specifically included as the channel coding method of the subcarrier:
Determine the corresponding maxgain value of bit number for supporting load；
And using the corresponding channel coding method of the maxgain value as the channel coding method of the subcarrier.
5. the method as described in claim 1, which is characterized in that in the corresponding channel coding of bit number for loading the support
Mode, after the channel coding method as the subcarrier, further includes:
The signal for carrying the channel coding method information of the subcarrier is sent to receiving end.
6. the method as described in claim 1, which is characterized in that in the corresponding channel coding of bit number for loading the support
Mode after the channel coding method as the subcarrier, is sent out using the channel coding method on the subcarrier
The data sent carry out before channel coding, further includes:
Determine that the subcarrier carries out the memory of channel coding consumption using corresponding channel coding method；
If the memory of the consumption is greater than preset value, the corresponding channel coding method of the subcarrier is redefined, until institute
It states subcarrier and the preset value is less than using the memory that corresponding channel coding method carries out channel coding consumption.
7. method as claimed in claim 6, which is characterized in that before the data after coding are sent on the subcarrier,
Further include:
Rate adaptation operating is carried out to the data after the coding.
8. a kind of method for receiving data characterized by comprising
Receive the signal of the channel coding method information for the carrying subcarrier that transmitting terminal is sent；
Using channel decoding process corresponding with the channel coding method, the data arrived in the received over subcarriers are carried out
Channel decoding, wherein the corresponding channel coding method of the subcarrier is that the subcarrier supports the bit number of load corresponding
Channel coding method.
9. method according to claim 8, which is characterized in that in the channel coding for receiving the carrying subcarrier that transmitting terminal is sent
Before the signal of mode information, further includes:
Receive the preset fixed sequence program signal that transmitting terminal is sent in the subcarrier；
The Signal to Noise Ratio (SNR) determined according to the fixed sequence program signal and the practical difference received between signal；
The SNR is sent to the transmitting terminal, so that the transmitting terminal determines the channel of the subcarrier according to the SNR
Coding mode.
10. a kind of device for sending data characterized by comprising
Signal-to-noise ratio determination unit, for determining the Signal to Noise Ratio (SNR) of subcarrier in assigned frequency band；
Bit number determination unit, for determining that the subcarrier supports the bit number of load according to the SNR；
Channel coding method determination unit, the corresponding channel coding method of bit number for loading the support, as institute
State the channel coding method of subcarrier, wherein the corresponding channel coding method of at least two subcarriers is different；
Transmission unit, for carrying out channel coding to the data sent on the subcarrier using the channel coding method,
And the data after coding are sent on the subcarrier.
11. device as claimed in claim 10, which is characterized in that the signal-to-noise ratio determination unit is specifically used for:
Preset fixed sequence program signal is sent to receiving end in the subcarrier；
Receive the SNR determined according to the difference between the fixed sequence program signal and reception signal that the receiving end is sent.
12. device as described in claim 10 or 11, which is characterized in that the bit number determination unit is specifically used for:
Determine that the subcarrier supports the bit number of load according to the SNR using shannon formula；
Wherein, the subcarrier supports the bit number of load to be positively correlated with the SNR.
13. device as claimed in claim 10, which is characterized in that the channel coding method determination unit is specifically used for:
Determine the corresponding maxgain value of bit number for supporting load；
And using the corresponding channel coding method of the maxgain value as the channel coding method of the subcarrier.
14. device as claimed in claim 10, which is characterized in that the transmission unit is also used to:
The signal for carrying the channel coding method information of the subcarrier is sent to receiving end.
15. device as claimed in claim 10, which is characterized in that further include judging unit, the judging unit is for determining
The subcarrier carries out the memory of channel coding consumption using corresponding channel coding method；
If the memory of the consumption is greater than preset value, the corresponding channel coding method of the subcarrier is redefined, until institute
It states subcarrier and the preset value is less than using the memory that corresponding channel coding method carries out channel coding consumption.
16. device as claimed in claim 15, which is characterized in that the transmission unit is also used to:
Rate adaptation operating is carried out to the data after the coding.
17. a kind of device for receiving data characterized by comprising
Receiving unit, the signal of the channel coding method information of the carrying subcarrier for receiving transmitting terminal transmission；
Decoding unit connects for using channel decoding process corresponding with the channel coding method on the subcarrier
The data that receive carry out channel decoding, wherein the corresponding channel coding method of the subcarrier is that the subcarrier supports load
The corresponding channel coding method of bit number.
18. device as claimed in claim 17, which is characterized in that further include SNR determination unit, the SNR determination unit is used
In:
Receive the preset fixed sequence program signal that transmitting terminal is sent in the subcarrier；
The Signal to Noise Ratio (SNR) determined according to the fixed sequence program signal and the practical difference received between signal；
The SNR is sent to the transmitting terminal, so that the transmitting terminal determines the channel of the subcarrier according to the SNR
Coding mode.
19. a kind of data receiving-transmitting system characterized by comprising
The device as described in claim 10 or 11 for sending data, and the dress of the reception data as described in claim 17 or 18
It sets.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2014/072553 WO2015127597A1 (en) | 2014-02-26 | 2014-02-26 | Data transmitting and receiving method, device and system |
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| CN105519063A CN105519063A (en) | 2016-04-20 |
| CN105519063B true CN105519063B (en) | 2019-07-12 |
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| KR20190034240A (en) * | 2016-08-03 | 2019-04-01 | 광동 오포 모바일 텔레커뮤니케이션즈 코포레이션 리미티드 | Data transfer method and apparatus |
| WO2021031052A1 (en) * | 2019-08-18 | 2021-02-25 | Qualcomm Incorporated | Network coding design |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101022440A (en) * | 2006-03-30 | 2007-08-22 | 鲍东山 | Compatiable DAB ground mobile multimedia broadcast receiving and transmitting method and system |
| CN101166080A (en) * | 2006-10-20 | 2008-04-23 | 鲍东山 | Method and system for realizing high data rate ODFM WLAN |
| CN101170531A (en) * | 2006-10-24 | 2008-04-30 | 北京大学 | A channel estimate method and corresponding communication method and system |
| CN103124249A (en) * | 2011-11-18 | 2013-05-29 | Vixs系统公司 | Carrier tracking without pilots |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005006638A2 (en) * | 2003-06-18 | 2005-01-20 | University Of Florida | Wireless lan compatible multi-input multi-output system |
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- 2014-02-26 WO PCT/CN2014/072553 patent/WO2015127597A1/en active Application Filing
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101022440A (en) * | 2006-03-30 | 2007-08-22 | 鲍东山 | Compatiable DAB ground mobile multimedia broadcast receiving and transmitting method and system |
| CN101166080A (en) * | 2006-10-20 | 2008-04-23 | 鲍东山 | Method and system for realizing high data rate ODFM WLAN |
| CN101170531A (en) * | 2006-10-24 | 2008-04-30 | 北京大学 | A channel estimate method and corresponding communication method and system |
| CN103124249A (en) * | 2011-11-18 | 2013-05-29 | Vixs系统公司 | Carrier tracking without pilots |
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| WO2015127597A1 (en) | 2015-09-03 |
| CN105519063A (en) | 2016-04-20 |
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