CN110012543A - Data transmission method, system and the storage medium of low control overhead in a kind of Internet of Things - Google Patents
Data transmission method, system and the storage medium of low control overhead in a kind of Internet of Things Download PDFInfo
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- CN110012543A CN110012543A CN201910249503.5A CN201910249503A CN110012543A CN 110012543 A CN110012543 A CN 110012543A CN 201910249503 A CN201910249503 A CN 201910249503A CN 110012543 A CN110012543 A CN 110012543A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0094—Indication of how sub-channels of the path are allocated
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention provides data transmission method, system and the storage mediums of low control overhead in a kind of Internet of Things, in the data transmission method, second communication node receives the first configuration information that the first communication node is sent, and by first configuration information storage into memory, first configuration information includes N number of access sequence group configuration information, N number of data resource configuration information, and the N is the integer more than or equal to 1；One candidate of selection accesses sequence to second communication node from the candidate access sequence group at random, second communication node sends the candidate access sequence, gives first communication node using channel data traffic bit sequence described in the candidate data resource transmission.The beneficial effects of the present invention are: the present invention compared with prior art, overcomes the problems, such as that spectrum efficiency is poor in existing Internet of Things, improves the spectrum efficiency of Internet of things system, reduces control overhead.
Description
Technical field
The present invention relates to a kind of transmission side datas of low control overhead in wireless communication technology field more particularly to Internet of Things
Method, system and storage medium.
Background technique
5G will meet people in the diversified business demand in the various regions such as inhabitation, work, leisure and traffic, even if close
Collect residential quarter, office, stadium, outdoor rally, subway, through street, high-speed rail and wide area covering etc. with ultra high flux density,
Superelevation connects number density, the scene of ultrahigh-mobility feature, or user provides ultra high-definition video, virtual reality, enhancing
The ultimate attainment business experiences such as reality, cloud desktop, game on line.At the same time, 5G will also penetrate into Internet of Things and various industries field,
It is merged with industrial plants, Medical Instruments, vehicles even depth, effectively meets the multiplicity of the vertical industries such as industry, medical treatment, traffic
Change business demand, realizes really " all things on earth interconnection ".
5G application scenarios can be divided into two major classes, i.e. mobile broadband (MBB, Mobile Broadband) and Internet of Things
(IoT, Internet of Things).Wherein, the major technique demand of mobile broadband access is high capacity, provides high data speed
Rate, to meet constantly increasing for data traffic requirement.Internet of Things is mainly by machine communication (MTC, Machine Type
Communication) the driving of demand can be further divided into two types, magnanimity machine communication including low rate (MMC,
Massive Machine Communication) and the highly reliable machine communication of low time delay.Wherein, for the magnanimity of low rate
Machine communication, the access of magnanimity node low rate, the data packet of transmission is usually smaller, and interval time can be relatively long, this kind of node
Cost and power consumption generally also can be very low；The machine communication highly reliable for low time delay, is mainly directed towards real-time and reliability is wanted
Ask relatively high machine communication, such as real-time alert, real time monitoring etc..
In 5th Generation Mobile Communication System, a kind of scene that needs are studied is the data biography of quick, lower control overhead
Transmission method, common solution main problem are that control overhead is very big, and propagation delay time is long, this results in the frequency of system
Spectrum efficiency is relatively low, how to increase the spectrum efficiency of Internet of things system, is Internet of things system major issue urgently to be resolved.
Summary of the invention
The present invention provides a kind of data transmission methods of low control overhead in Internet of Things, including successively execute following step
It is rapid:
Step 1: the second communication node receives the first configuration information that the first communication node is sent, and described first is configured
Information is stored into memory, and first configuration information includes N number of access sequence group configuration information, the configuration of N number of data resource
Information, the N are the integer more than or equal to 1；
Second communication node obtains the information source data traffic bits sequence for needing to send to first communication node,
According to preceding LOG2 (N) a bit of the information source data traffic bits sequence determine first configuration information determine need using
Candidate access sequence group；
Second communication node carries out channel coding to the information source data traffic bits sequence and obtains channel data industry
Business bit sequence, second communication node are determined according to a bit of preceding LOG2 (N) of the channel data traffic bit sequence
Candidate data resource；
Step 4: one candidate of selection accesses sequence to second communication node from the candidate access sequence group at random,
Second communication node sends the candidate access sequence, uses channel data traffic described in the candidate data resource transmission
Bit sequence gives first communication node.
As a further improvement of the present invention, the subcarrier number that the candidate data resource includes is 3*512, described
1/3 subcarrier is used to transmit demodulated reference signal in the subcarrier that candidate data resource includes, and transmits the demodulation reference letter
Number the subcarrier be evenly distributed in the 3*512 subcarrier that the candidate data resource includes.
As a further improvement of the present invention, it is used when carrying out channel coding to the information source data traffic bits sequence
Code rate is less than or equal to 1/2.
As a further improvement of the present invention, if the length of the channel data traffic bit sequence is less than or equal to 64,
Then second communication node uses the running time-frequency resource prior to the candidate data resource to send 1 candidate in time and connects
Enter sequence.
As a further improvement of the present invention, if the length of the channel data traffic bit sequence is greater than 64 and small
In being equal to 128, then second communication node uses the running time-frequency resource prior to the candidate data resource to repeat to send out in time
Send 2 candidate access sequences.
As a further improvement of the present invention, if the length of the channel data traffic bit sequence is more than or equal to 128,
Then second communication node respectively repeats to send 2 using the running time-frequency resource for being located at candidate data resource two sides in time
The candidate access sequence.
As a further improvement of the present invention, in every height when second communication node sends the candidate access sequence
Transmission power ratio on carrier wave sends the high 6dB of transmission power of the channel data traffic bit sequence on each subcarrier.
As a further improvement of the present invention, if second communication node is sending the channel data traffic ratio
In the 10ms of special sequence, the reception success feedback information of first communication node is not received, then second communication node
Two candidate data resources are determined using preceding 2*LOG2 (N) a bit of the channel data traffic bit sequence, described second
Communication node retransmits the channel data traffic bit sequence using described two candidate data resources.
The present invention also provides a kind of data transmission systems of low control overhead in Internet of Things, comprising: memory, processor
And it is stored in the computer program on the memory, the realization when computer program is configured to be called by the processor
The step of method of the present invention.
The present invention also provides a kind of computer readable storage medium, the computer-readable recording medium storage has calculating
The step of machine program, the computer program realizes method of the present invention when being configured to be called by processor.
The beneficial effects of the present invention are: the present invention compared with prior art, overcomes spectrum efficiency difference in existing Internet of Things
Problem improves the spectrum efficiency of Internet of things system, reduces control overhead.
Detailed description of the invention
Fig. 1 is flow chart of the method for the present invention.
Specific embodiment
As shown in Figure 1, the invention discloses a kind of data transmission methods of low control overhead in Internet of Things, as the present invention
Embodiment 1, the data transmission method include successively execute following steps:
The S1: the second communication node of step receives the first configuration information that the first communication node is sent, and described first is matched
Into memory, first configuration information includes that N number of access sequence group configuration information, N number of data resource are matched for confidence breath storage
Confidence breath, the N are the integer more than or equal to 1；
Step S2: second communication node obtains the information source data service ratio for needing to send to first communication node
Special sequence determines that first configuration information determines according to preceding LOG2 (N) a bit of the information source data traffic bits sequence
Need candidate access sequence group to be used；
Step S3: second communication node carries out channel coding to the information source data traffic bits sequence and obtains channel
Data traffic bits sequence, second communication node is according to a ratio of preceding LOG2 (N) of the channel data traffic bit sequence
Spy determines candidate data resource；
Step S4: one candidate of selection accesses sequence to second communication node from the candidate access sequence group at random
Column, second communication node send the candidate access sequence, use channel data described in the candidate data resource transmission
Service bits sequence gives first communication node.
First communication node is base station, and second communication node is terminal.
Embodiment 2: on the basis of embodiment 1, the subcarrier number that candidate data resource includes is 3*512, this
Value is determined after being analyzed based on the characteristics of Physical Network data packet, can be adapted for 90% or more internet of things data knot
Structure.
Embodiment 3: on the basis of embodiment 2,1/3 subcarrier is used in the subcarrier that the candidate data resource includes
To transmit demodulated reference signal.In general, the access sequence that terminal transmission can be used in base station carries out channel estimation, to go to demodulate
The upstream data that terminal is sent, the benefit for increasing demodulation pilot tone here are to improve the specific length business datum for needing to lay special stress on protecting
Precision of channel estimation, to promote the transmission success rate of such length business datum.
Embodiment 4: on the basis of embodiment 3, the subcarrier for transmitting demodulated reference signal is evenly distributed on candidate data
In the 3*512 subcarrier that resource includes.The advantage of doing so is that base station can be allowed, which relatively accurately to obtain terminal, sends data
The channel information of used resource improves the probability of data receiver power.
Embodiment 5: it on the basis of embodiment 1, is used when carrying out channel coding to information source data traffic bits sequence
Code rate is less than or equal to 1/2.The purpose required in this way is by extremely low code rate, it is ensured that even if data transmission is occurring between terminal
In the case where collision, the upstream data of terminal transmission can be also successfully decoded in base station.
Embodiment 6: on the basis of embodiment 1, if the length of the channel data traffic bit sequence is less than or equal to
64, then second communication node uses the running time-frequency resource prior to the candidate data resource to send 1 time in time
Choosing access sequence.The purpose for the arrangement is that when the source bits length due to terminal is smaller, even if access sequence is due to sending
In the case that energy is low to cause base station to fail reception access sequence, and then base station can not go decoding related data, to system
Spectrum efficiency influence it is smaller.
Embodiment 7: on the basis of embodiment 1, if the length of the channel data traffic bit sequence be greater than 64 and
Less than or equal to 128, then second communication node uses the running time-frequency resource repetition prior to the candidate data resource in time
Send 2 candidate access sequences.The purpose for the arrangement is that due to terminal source bits moderate length when, pass through as far as possible
The mode for repeating to send access sequence increases the energy that base station receives access sequence, is properly received the probability of access sequence, in turn
Increase the probability of base station successful data reception.
Embodiment 8: on the basis of embodiment 1, if the length of the channel data traffic bit sequence is more than or equal to
128, then second communication node respectively repeats to send out using the running time-frequency resource for being located at candidate data resource two sides in time
Send 2 candidate access sequences.The purpose for the arrangement is that due to terminal source bits moderate length when, pass through as far as possible weight
Recurrence send the mode of access sequence to increase the energy that base station receives access sequence, is properly received the probability of access sequence, Jin Erzeng
Add the probability of base station successful data reception.
Embodiment 9: on the basis of embodiment 1, every when second communication node sends the candidate access sequence
It is high that transmission power ratio on a subcarrier sends the transmission power of the channel data traffic bit sequence on each subcarrier
6dB.Reason for this is that data traffic bits coding gain, and accessing sequence does not have any coding gain, and accesses
Sequence has decisive impact the reception success or not of data service, so sending the side of power by increasing access sequence
Formula come improve base station receive upstream data service success rate.
Embodiment 10: on the basis of embodiment 1, if second communication node is sending the channel data industry
It is engaged in the 10ms of bit sequence, does not receive the reception success feedback information of first communication node, then second communication
Node determines two candidate data resources using preceding 2*LOG2 (N) a bit of the channel data traffic bit sequence, described
Second communication node retransmits the channel data traffic bit sequence using described two candidate data resources.The benefit done so
It is to obtain frequency diversity gain by increasing transfer resource as far as possible, to increase the successful probability of data receiver.
The invention also discloses a kind of data transmission systems of low control overhead in Internet of Things, comprising: memory, processor
And it is stored in the computer program on the memory, the realization when computer program is configured to be called by the processor
The step of method of the present invention.
The invention also discloses a kind of computer readable storage medium, the computer-readable recording medium storage has calculating
The step of machine program, the computer program realizes method of the present invention when being configured to be called by processor.
The beneficial effects of the present invention are: the present invention compared with prior art, overcomes spectrum efficiency difference in existing Internet of Things
Problem improves the spectrum efficiency of Internet of things system, reduces control overhead.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention
Protection scope.
Claims (10)
1. the data transmission method of low control overhead in a kind of Internet of Things, which is characterized in that including successively executing following steps:
Step 1: the second communication node receives the first configuration information that the first communication node is sent, and by first configuration information
It storing in memory, first configuration information includes N number of access sequence group configuration information, N number of data resource configuration information,
The N is the integer more than or equal to 1；
Step 2: second communication node obtains the information source data traffic bits sequence for needing to send to first communication node
Column determine that first configuration information determines needs according to preceding LOG2 (N) a bit of the information source data traffic bits sequence
The candidate access sequence group used；
Step 3: second communication node carries out channel coding to the information source data traffic bits sequence and obtains channel data
Service bits sequence, second communication node are true according to preceding LOG2 (N) a bit of the channel data traffic bit sequence
Determine candidate data resource；
Step 4: one candidate of selection accesses sequence to second communication node from the candidate access sequence group at random, described
Second communication node sends the candidate access sequence, uses channel data traffic bit described in the candidate data resource transmission
Sequence gives first communication node.
2. data transmission method according to claim 1, which is characterized in that the subcarrier that the candidate data resource includes
Number is 3*512, and 1/3 subcarrier is used to transmit demodulated reference signal in the subcarrier that the candidate data resource includes,
The subcarrier for transmitting the demodulated reference signal is evenly distributed on the 3*512 subcarrier that the candidate data resource includes
In.
3. data transmission method according to claim 1, which is characterized in that the information source data traffic bits sequence into
The code rate used when row channel coding is less than or equal to 1/2.
4. data transmission method according to claim 1, which is characterized in that if the channel data traffic bit sequence
Length be less than or equal to 64, then second communication node uses the running time-frequency resource prior to the candidate data resource in time
Send 1 candidate access sequence.
5. data transmission method according to claim 1, which is characterized in that if the channel data traffic bit sequence
Length be greater than 64 and be less than or equal to 128, then second communication node is used in time prior to the candidate data resource
Running time-frequency resource repeat to send 2 candidate access sequences.
6. data transmission method according to claim 1, which is characterized in that if the channel data traffic bit sequence
Length be more than or equal to 128, then second communication node in time using be located at candidate data resource two sides when
Frequency resource respectively repeats to send 2 candidate access sequences.
7. data transmission method according to claim 1, which is characterized in that second communication node sends the candidate
Transmission power ratio when accessing sequence on each subcarrier sends the channel data traffic bit sequence in each subcarrier
On the high 6dB of transmission power.
8. data transmission method according to claim 1, which is characterized in that if second communication node is being sent
In the 10ms of the channel data traffic bit sequence, the reception success feedback information of first communication node is not received,
Then second communication node determines two candidates using preceding 2*LOG2 (N) a bit of the channel data traffic bit sequence
Data resource, second communication node retransmit the channel data traffic bit sequence using described two candidate data resources
Column.
9. the data transmission system of low control overhead in a kind of Internet of Things characterized by comprising memory, processor and
The computer program being stored on the memory, the computer program are configured to realize right when being called by the processor
It is required that the step of method described in any one of 1-8.
10. a kind of computer readable storage medium, which is characterized in that the computer-readable recording medium storage has computer journey
The step of sequence, the computer program realizes method of any of claims 1-8 when being configured to be called by processor.
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Cited By (1)
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