CN106533616A - Reliable data transmission method - Google Patents
Reliable data transmission method Download PDFInfo
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- CN106533616A CN106533616A CN201610935433.5A CN201610935433A CN106533616A CN 106533616 A CN106533616 A CN 106533616A CN 201610935433 A CN201610935433 A CN 201610935433A CN 106533616 A CN106533616 A CN 106533616A
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- resource
- reference signal
- communication node
- bit block
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0061—Error detection codes
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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
-
- 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)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a reliable data transmission method. A first communication node allocates a first transmission resource and a second transmission resource for a second communication node. The second communication node generates a bit block of the to-be-transmitted data including the cyclic redundancy check information and having a length Y. The second communication node has three candidate demodulation reference signal transmission modes; the first communication node receives the demodulation reference signal on the first transmission resource and determines the transmission mode of the demodulation reference signal; and if the first communication node is successfully decoded on the first transmission resource, the procedures end. If the first communication node is not successfully decoded on the first transmission resource, the first communication node determines whether there exists a bit block with redundancy data on the second transmission resource or not; if there exists a bit block, the first communication node attempts to be successfully decoded through the utilization of the received bit block with redundancy data and the bit block of the to-be-transmitted data. The method of the invention can effectively enhance the robustness of data transmission so as to adapt for the business requirement of the fifth generation communication system.
Description
Technical field
The present invention relates to the transmission side data in moving communicating field, more particularly to a kind of 5th generation wireless communication system
Method.
Background technology
With rise and abundant, the data user's number in wireless communication system of wireless data application business of intelligent terminal
It is significantly increased, data content is no longer confined to traditional word or image, and future customer is to high definition video, mobile TV etc.
The demand of multimedia service is more and more, causes wireless network traffic to present the situation of explosive growth.According to market institution
Prediction, coming 10 years, wireless data service will increase by 500 ~ 1000 times, increase by 1.6 ~ 2 times every year on average, and this is to radio communication system
The network capacity of system is put forward higher requirement.
Towards the year two thousand twenty and future, mobile Internet and internet of things service will become the main driving of Mobile Communication Development
Power.5G will meet people living, work, the diversified business demand in leisure and the various regions such as traffic, even if it is intensive firmly
Quarter, office, stadium, outdoor rally, subway, through street, high ferro and wide area covering etc. has ultra high flux density, superelevation
Connection number density, the scene of ultrahigh-mobility feature, it is also possible to provide the user ultra high-definition video, virtual reality, augmented reality,
The ultimate attainment business experience such as cloud desktop, game on line.At the same time, 5G will also penetrate into Internet of Things and various industries field, with work
Industry facility, Medical Instruments, the fusion of vehicles even depth, effectively meet the diversified industry of the vertical industries such as industry, medical treatment, traffic
Business demand, realizes real " all things on earth interconnection ".
5G will solve the challenge that differentiation performance indications are brought under diversified application scenarios, the property that different application scene faces
Can challenge different, Consumer's Experience speed, flux density, time delay, efficiency and connection number are all likely to become choosing for different scenes
War property index.From mobile Internet and the main application scenarios of Internet of Things, business demand and challenge, continuous wide area can be summarized
Covering, focus high power capacity, the big connection of low-power consumption and the highly reliable four 5G major technique scenes of low time delay.
For the highly reliable technology scene of low time delay, need to improve the first success rate for passing of data as far as possible, but it is current
Transmission mechanism is designed with the first success rate for passing 90%, it is impossible to meet the design requirement of future broadband wireless communication systems.
The content of the invention
It is an object of the invention to the problems such as overcoming the difference of data transmission credibility present in the 5th generation wireless communication system,
A kind of reliable data transmission method is provided.
It is that, up to above-mentioned purpose, the present invention is achieved through the following technical solutions：
A kind of reliable data transmission method, comprises the following steps：1）First communication node is the second communication node distribution first
Send resource and second and send resource, wherein the first transmission resource is that second communication node occupies alone, it is described
Second transmission resource is that second communication node and other second communication nodes are shared, and described second sends the frequency domain of resource
Subcarrier number sends the subcarrier in frequency domain number of resource less than described first, and the time domain length of the second transmission resource is more than
Described first time domain length for sending resource, it is continuous in time domain that the second transmission resource sends resource with described first
, after the second transmission resource sends resource positioned at described first；2）Second communication node generates length treating for Y
Transmission data bit block, from the data to be transmitted bit block extracts X bit and generates redundant data bits block, wherein, X with
Y is positive integer, and X is less than Y, comprising cyclic redundancy check information in the data to be transmitted bit block；3）Second communication section
Point has three kinds of candidate's demodulated reference signal transmissions patterns, is referred to as the first demodulated reference signal transmissions pattern, the second demodulation ginseng
Examine signal transfer mode, the 3rd demodulated reference signal transmissions pattern, if second communication node is only determined using described the
One sends resource sends the data to be transmitted bit block, then second communication node uses first demodulated reference signal
Transmission mode is sent for demodulating the demodulated reference signal of the data to be transmitted bit block, and is sent in resource described first
The demodulated reference signal is sent with the data to be transmitted bit block；If second communication node is determined using described the
One sends resource sends the data to be transmitted bit block, and sends resource by spread spectrum, single precoding using described second
Mode sends the redundant data bits block, then second communication node uses the second demodulated reference signal transmissions pattern
Send for demodulating the demodulated reference signal of the data to be transmitted bit block, and send described first and send in resource described
Demodulated reference signal and the data to be transmitted bit block, send in resource by spread spectrum, single precoding side described second
Formula transmits the redundant data bits block；If second communication node determines that sending resource using described first sends described
Data to be transmitted bit block, and the redundant data bits are sent by open-loop precoding mode using the described second transmission resource
Block, then second communication node sent for demodulating the number to be transmitted using the 3rd demodulated reference signal transmissions pattern
According to the demodulated reference signal of bit block, and it is to be transmitted with described in the described first transmission resource to send the demodulated reference signal
Data bit block, transmits the redundant data bits block by spread spectrum, open-loop precoding mode in the described second transmission resource；
4）First communication node receives the described first demodulated reference signal sent in resource, determines the demodulated reference signal
Transmission mode, if first communication node is successfully decoded the data to be transmitted bit block in the first transmission resource,
Flow process terminates；If first communication node is unsuccessful in the first transmission resource to decode the data to be transmitted bit block,
Then first communication node determines the redundancy for whether having second communication node to send in the second transmission resource
Data bit block, if it has, then first communication node is using the redundant data bits block that receives and receives
The data to be transmitted bit block attempts the data to be transmitted bit block whether is successfully decoded, and flow process terminates, if it did not,
Then flow process terminates.
Further, the demodulated reference signal transmissions pattern at least includes one below or its combination：Reference signal makes
Sequence, the running time-frequency resource that reference signal is used, the pattern of reference signal.
Further, if second communication node forward direction described in the first communication node send data procedures in not
Generation data are retransmitted, then second communication node is sent for demodulating using the first demodulated reference signal transmissions pattern
State the demodulated reference signal of data to be transmitted bit block, and send in the described first transmission resource the demodulated reference signal with
The data to be transmitted bit block.
Further, if second communication node forward direction described in the first communication node send data procedures in send out
Raw data are retransmitted, and second communication node measures channel according to the measuring reference signals that first communication node sends
Correlation time is more than 0.5ms, then second communication node is sent using the second demodulated reference signal transmissions pattern and is used for
The demodulated reference signal of the data to be transmitted bit block is demodulated, and the demodulation reference is sent in the described first transmission resource
Signal and the data to be transmitted bit block, transmit institute by spread spectrum, single precoding mode in the described second transmission resource
State redundant data bits block.
Further, if second communication node forward direction described in the first communication node send data procedures in send out
Raw data are retransmitted, and second communication node measures channel according to the measuring reference signals that first communication node sends
Correlation time is less than or equal to 0.5ms, then second communication node is sent using the 3rd demodulated reference signal transmissions pattern
For demodulating the demodulated reference signal of the data to be transmitted bit block, and the demodulation is sent in the described first transmission resource
Reference signal and the data to be transmitted bit block, are passed by spread spectrum, open-loop precoding mode in the described second transmission resource
The defeated redundant data bits block.
Further, if second communication node is by measuring the measurement reference letter that first communication node sends
Number Signal to Interference plus Noise Ratio for obtaining is less than 20dB, and the measurement reference that second communication node sends according to first communication node
Signal measures the correlation time of channel more than 0.5ms, then second communication node is using the 3rd demodulated reference signal biography
Defeated pattern is sent for demodulating the demodulated reference signal of the data to be transmitted bit block, and is sent described first and send out in resource
Send the demodulated reference signal and the data to be transmitted bit block, described second send resource on by spread spectrum, it is single pre-
Coded system transmits the redundant data bits block.
Further, if second communication node is by measuring the measurement reference letter that first communication node sends
Number Signal to Interference plus Noise Ratio for obtaining is less than 20dB, and the measurement reference that second communication node sends according to first communication node
Signal measures the correlation time of channel less than or equal to 0.5ms, then second communication node is using the 3rd demodulation reference letter
Number transmission mode is sent for demodulating the demodulated reference signal of the data to be transmitted bit block, and sends resource described first
It is upper to send the demodulated reference signal and the data to be transmitted bit block, by spreading, opening in the described second transmission resource
Ring precoding mode transmits the redundant data bits block.
Further, second communication node using frequency expansion sequence to be first communication node logical by signaling
Know, if total subcarrier number that the second transmission resource is included is more than 256, frequency expansion sequence is pseudo-random sequence, such as
Less than or equal to 256, then frequency expansion sequence is walsh sequence to total subcarrier number that really described second transmission resource is included.
Further, transmission power ratio of second communication node on described second each subcarrier for sending resource
Described first sends big more than the 3dB of transmit power on each subcarrier in resource, or big log2（Second sends resource
Total number of sub-carriers/the first sends the total number of sub-carriers of resource）More than dB.
Further, the single precoding mode refers to that second communication node sends the every of resource described second
Carried out data transmission using identical pre-coding matrix on individual subcarrier.
Further, the open-loop precoding mode refers to second communication node in the described second son for sending resource
Predefined one group of pre-coding matrix is used alternatingly to carry out data transmission on carrier wave.
Further, predefined one group of pre-coding matrix is existed with the transmission mode of the demodulated reference signal and is reflected
Penetrate relation.
Further, second communication node sends described using wave beam BF-A is sent in the described first transmission resource
Data to be transmitted bit block, sends the redundant data bits block using wave beam BF-B is sent in the described second transmission resource,
The beam angle of the transmission wave beam BF-A is less than the transmission wave beam BF-B.
The invention has the beneficial effects as follows：The invention provides a kind of reliable data transmission method, including the first communication section
Point sends resource and second for the second communication node distribution first and sends resource；Second communication node is generated comprising cyclic redundancy school
Test the data to be transmitted bit block that information, length are Y；Second communication node has three kinds of candidate's demodulated reference signal transmissions patterns,
First communication node receives the described first demodulated reference signal sent in resource, determines the transmission mould of the demodulated reference signal
Formula, if first communication node is successfully decoded the data to be transmitted bit block, flow process knot in the first transmission resource
Beam；If first communication node sends the unsuccessful decoding data to be transmitted bit block in resource first, first
Communication node determines and whether have redundant data bits block in the second transmission resource, if it has, then first communication node is utilized
It is described to be transmitted whether the redundant data bits block for receiving and the data to be transmitted bit block trial for receiving can be successfully decoded
Data bit block, flow process terminate.Using the method for the invention and device（System）, compared with prior art, can be effectively increased
The robustness of data transfer is adapting to the business demand of the 5th generation wireless communication system.
Description of the drawings
Fig. 1 is the flow chart of the data transmission method of the present invention；
Fig. 2 is to send resource location schematic diagram；
Fig. 3 is pilot tone pattern schematic diagram.
Specific embodiment
Accompanying drawing is combined below by specific embodiment to be described in further detail the present invention.
As shown in Figure 1, method of the present invention flow process is as follows：
Step 102, the first communication node send resource and second to the second communication node distribution first and send resource, wherein described
First send resource be that second communication node occupies alone, it is described second transmission resource be second communication node and
What other second communication nodes were shared, the described second subcarrier in frequency domain number for sending resource sends resource less than described first
Subcarrier in frequency domain number, the described second time domain length for sending resource send the time domain length of resource more than described first, described
Second transmission resource is continuous with the described first transmission resource in time domain, and described second sends resource is located at described first
After sending resource；
Step 104, second communication node generate data to be transmitted bit block of the length for Y, from the data to be transmitted ratio
X bit is extracted in special block and generates redundant data bits block, wherein, X and Y is positive integer, and X is less than Y, the data to be transmitted ratio
Cyclic redundancy check information is included in special block；
Step 106, second communication node have three kinds of candidate's demodulated reference signal transmissions patterns, are referred to as the first demodulation ginseng
Examine signal transfer mode, the second demodulated reference signal transmissions pattern, the 3rd demodulated reference signal transmissions pattern, if described second
Communication node determines that only sending resource using described first sends the data to be transmitted bit block, then second communication node
Sent using the first demodulated reference signal transmissions pattern and believed for the demodulation reference for demodulating the data to be transmitted bit block
Number, and the demodulated reference signal is sent with the data to be transmitted bit block in the described first transmission resource；If described
Second communication node determines that sending resource using described first sends the data to be transmitted bit block, and uses described second
Resource is sent to send the redundant data bits block by spread spectrum, single precoding mode, then second communication node uses institute
State the second demodulated reference signal transmissions pattern to send for demodulating the demodulated reference signal of the data to be transmitted bit block, and
The demodulated reference signal and the data to be transmitted bit block are sent in the first transmission resource, money are sent described second
The redundant data bits block is transmitted by spread spectrum, single precoding mode on source；If second communication node determines made
Resource is sent with described first and sends the data to be transmitted bit block, and prelisted by open loop using the described second transmission resource
Code mode sends the redundant data bits block, then second communication node uses the 3rd demodulated reference signal transmissions mould
Formula is sent for demodulating the demodulated reference signal of the data to be transmitted bit block, and in the described first transmission resource sends institute
Demodulated reference signal and the data to be transmitted bit block are stated, is sent in resource by spread spectrum, open-loop precoding described second
Mode transmits the redundant data bits block；
Step 108, first communication node receive the described first demodulated reference signal sent in resource, determine the demodulation
The transmission mode of reference signal, if first communication node is successfully decoded the data to be transmitted in the first transmission resource
Bit block, then flow process terminate；If first communication node is unsuccessful in the first transmission resource to decode the number to be transmitted
According to bit block, then first communication node determines and whether have what second communication node sent in the second transmission resource
The redundant data bits block, if it has, then first communication node using the redundant data bits block for receiving and
The data to be transmitted bit block for receiving attempts the data to be transmitted bit block whether is successfully decoded, and flow process terminates,
If it did not, flow process terminates.
Embodiment 1
Base station to terminal A distribution first send resource and second send resource, wherein it is described first transmission resource be terminal alone
Occupy, the second transmission resource is that terminal A and other terminals are shared.Preferably, as shown in Figure 2, described second
Send the subcarrier in frequency domain number of resource less than the subcarrier in frequency domain number of the described first transmission resource, described second sends resource
Time domain length more than described first send resource time domain length, it is described second send resource with described first send resource when
It is continuous on domain, after the second transmission resource sends resource positioned at described first.
Terminal A generates the data to be transmitted bit block that length is 100, takes out from the data to be transmitted bit block equal intervals
Take 25 bits and generate redundant data bits block, the cyclic redundancy check information comprising 4 bits in the data to be transmitted bit block.
Terminal A has three kinds of candidate's demodulated reference signal transmissions patterns, is referred to as the first demodulated reference signal transmissions pattern,
Second demodulated reference signal transmissions pattern, the 3rd demodulated reference signal transmissions pattern.Preferably, the demodulated reference signal transmissions
Pattern at least includes one below or its combination：The sequence that reference signal is used, the running time-frequency resource that reference signal is used, with reference to letter
Number pattern（As shown in Figure 3）.
If terminal A determines that only sending resource using described first sends the data to be transmitted bit block, terminal A makes
Sent for demodulating the demodulated reference signal of the data to be transmitted bit block with the first demodulated reference signal transmissions pattern,
And the demodulated reference signal is sent with the data to be transmitted bit block in the described first transmission resource.
If terminal A determines that sending resource using described first sends the data to be transmitted bit block, and using described
Second transmission resource sends the redundant data bits block by spread spectrum, single precoding mode, then terminal A uses described second
Demodulated reference signal transmissions pattern is sent for demodulating the demodulated reference signal of the data to be transmitted bit block, and described
The demodulated reference signal and the data to be transmitted bit block are sent in one transmission resource, is sent described second and lead in resource
Cross spread spectrum, single precoding mode and transmit the redundant data bits block.
If terminal A determines that sending resource using described first sends the data to be transmitted bit block, and using described
Second transmission resource sends the redundant data bits block by open-loop precoding mode, then terminal A is using the described 3rd demodulation
Reference signal transmission pattern is sent for demodulating the demodulated reference signal of the data to be transmitted bit block, and at described first
Send, send in resource by expanding described second
Frequently, open-loop precoding mode transmits the redundant data bits block.
Base station receives the described first demodulated reference signal sent in resource, determines the transmission mould of the demodulated reference signal
Formula, if base station is successfully decoded the data to be transmitted bit block in the first transmission resource, flow process terminates；If base station exists
It is unsuccessful in first transmission resource to decode the data to be transmitted bit block, then transmission of the base station by the demodulated reference signal
Pattern determines the redundant data bits block for whether having terminal A to send in the second transmission resource, if it has, then base station profit
Attempt whether to be successfully decoded with the redundant data bits block for receiving and the data to be transmitted bit block for receiving
The data to be transmitted bit block, flow process terminates, if it did not, flow process terminates.
Embodiment 2
Base station to terminal A distribution first send resource and second send resource, wherein it is described first transmission resource be terminal alone
Occupy, the second transmission resource is that terminal A and other terminals are shared.Preferably, as shown in Figure 2, described second
Send the subcarrier in frequency domain number of resource less than the subcarrier in frequency domain number of the described first transmission resource, described second sends resource
Time domain length more than described first send resource time domain length, it is described second send resource with described first send resource when
It is continuous on domain, after the second transmission resource sends resource positioned at described first.
Terminal A generates the data to be transmitted bit block that length is 100, takes out from the data to be transmitted bit block equal intervals
Take 25 bits and generate redundant data bits block, the cyclic redundancy check information comprising 4 bits in the data to be transmitted bit block.
Terminal A has three kinds of candidate's demodulated reference signal transmissions patterns, is referred to as the first demodulated reference signal transmissions pattern,
Second demodulated reference signal transmissions pattern, the 3rd demodulated reference signal transmissions pattern.Preferably, the demodulated reference signal transmissions
Pattern at least includes one below or its combination：The sequence that reference signal is used, the running time-frequency resource that reference signal is used, with reference to letter
Number pattern.
If terminal A forward direction base station send data procedures in do not occur data re-transmission, terminal A use described first
Demodulated reference signal transmissions pattern is sent for demodulating the demodulated reference signal of the data to be transmitted bit block, and described
The demodulated reference signal is sent with the data to be transmitted bit block in one transmission resource.
Base station receives the described first demodulated reference signal sent in resource, determines the transmission mould of the demodulated reference signal
Formula, base station are successfully decoded the data to be transmitted bit block in the first transmission resource, then flow process terminates.
Embodiment 3
Base station to terminal A distribution first send resource and second send resource, wherein it is described first transmission resource be terminal alone
Occupy, the second transmission resource is that terminal A and other terminals are shared.Preferably, as shown in Figure 2, described second
Send the subcarrier in frequency domain number of resource less than the subcarrier in frequency domain number of the described first transmission resource, described second sends resource
Time domain length more than described first send resource time domain length, it is described second send resource with described first send resource when
It is continuous on domain, after the second transmission resource sends resource positioned at described first.
Terminal A generates the data to be transmitted bit block that length is 100, takes out from the data to be transmitted bit block equal intervals
Take 25 bits and generate redundant data bits block, the cyclic redundancy check information comprising 4 bits in the data to be transmitted bit block.
Terminal A has three kinds of candidate's demodulated reference signal transmissions patterns, is referred to as the first demodulated reference signal transmissions pattern,
Second demodulated reference signal transmissions pattern, the 3rd demodulated reference signal transmissions pattern.Preferably, the demodulated reference signal transmissions
Pattern at least includes one below or its combination：The sequence that reference signal is used, the running time-frequency resource that reference signal is used, with reference to letter
Number pattern.
If terminal A forward direction base station send data procedures in there are data and retransmit, and terminal A sends according to base station
Measuring reference signals measure the correlation time of channel more than 0.5ms, then terminal A is using the second demodulated reference signal transmissions mould
Formula is sent for demodulating the demodulated reference signal of the data to be transmitted bit block, and in the described first transmission resource sends institute
Demodulated reference signal and the data to be transmitted bit block are stated, is sent in resource by spread spectrum, single precoding described second
Mode transmits the redundant data bits block.Preferably, the single precoding mode refers to second communication node in institute
Carried out data transmission using identical pre-coding matrix on each subcarrier for stating the second transmission resource.
Base station receives the described first demodulated reference signal sent in resource, determines the transmission mould of the demodulated reference signal
Formula, if base station is successfully decoded the data to be transmitted bit block in the first transmission resource, flow process terminates；If base station exists
It is unsuccessful in first transmission resource to decode the data to be transmitted bit block, then transmission of the base station by the demodulated reference signal
Pattern determines the redundant data bits block for having terminal A to send in the second transmission resource, then base station utilizes what is received
It is described to be transmitted whether the redundant data bits block and the data to be transmitted bit block trial for receiving can be successfully decoded
Data bit block, flow process terminate.
Embodiment 4
Base station to terminal A distribution first send resource and second send resource, wherein it is described first transmission resource be terminal alone
Occupy, the second transmission resource is that terminal A and other terminals are shared.Preferably, as shown in Figure 2, described second
Send the subcarrier in frequency domain number of resource less than the subcarrier in frequency domain number of the described first transmission resource, described second sends resource
Time domain length more than described first send resource time domain length, it is described second send resource with described first send resource when
It is continuous on domain, after the second transmission resource sends resource positioned at described first.
Terminal A generates the data to be transmitted bit block that length is 100, takes out from the data to be transmitted bit block equal intervals
Take 25 bits and generate redundant data bits block, the cyclic redundancy check information comprising 4 bits in the data to be transmitted bit block.
Terminal A has three kinds of candidate's demodulated reference signal transmissions patterns, is referred to as the first demodulated reference signal transmissions pattern,
Second demodulated reference signal transmissions pattern, the 3rd demodulated reference signal transmissions pattern.Preferably, the demodulated reference signal transmissions
Pattern at least includes one below or its combination：The sequence that reference signal is used, the running time-frequency resource that reference signal is used, with reference to letter
Number pattern.
If terminal A forward direction base station send data procedures in occur data retransmit（For example with 5 transmissions before statistics
Whether occurred to retransmit during data as judgment basis）, and terminal A measured according to the measuring reference signals that base station sends
The correlation time of channel is less than or equal to 0.5ms, then terminal A is sent for solving using the 3rd demodulated reference signal transmissions pattern
The demodulated reference signal of the data to be transmitted bit block is adjusted, and the demodulation reference letter is sent in the described first transmission resource
Number with the data to be transmitted bit block, transmitted by spread spectrum, open-loop precoding mode in the described second transmission resource described
Redundant data bits block.Preferably, the open-loop precoding mode refers to terminal A on the described second subcarrier for sending resource
Predefined one group of pre-coding matrix is used alternatingly to carry out data transmission, predefined one group of pre-coding matrix with it is described
Demodulated reference signal using sequence there are mapping relations, for example, sequence A correspondence pre-coding matrix group A, sequence B correspondence prelist
Code matrix group B.
Base station receives the described first demodulated reference signal sent in resource, determines the transmission mould of the demodulated reference signal
Formula, if base station is successfully decoded the data to be transmitted bit block in the first transmission resource, flow process terminates；If base station exists
It is unsuccessful in first transmission resource to decode the data to be transmitted bit block, then transmission of the base station by the demodulated reference signal
Pattern determines the redundant data bits block for having terminal A to send in the second transmission resource, then base station utilizes what is received
It is described to be transmitted whether the redundant data bits block and the data to be transmitted bit block trial for receiving can be successfully decoded
Data bit block, flow process terminate.
Embodiment 5
Base station to terminal A distribution first send resource and second send resource, wherein it is described first transmission resource be terminal alone
Occupy, the second transmission resource is that terminal A and other terminals are shared.Preferably, as shown in Figure 2, described second
Send the subcarrier in frequency domain number of resource less than the subcarrier in frequency domain number of the described first transmission resource, described second sends resource
Time domain length more than described first send resource time domain length, it is described second send resource with described first send resource when
It is continuous on domain, after the second transmission resource sends resource positioned at described first.
Terminal A generates the data to be transmitted bit block that length is 100, takes out from the data to be transmitted bit block equal intervals
Take 25 bits and generate redundant data bits block, the cyclic redundancy check information comprising 4 bits in the data to be transmitted bit block.
Terminal A has three kinds of candidate's demodulated reference signal transmissions patterns, is referred to as the first demodulated reference signal transmissions pattern,
Second demodulated reference signal transmissions pattern, the 3rd demodulated reference signal transmissions pattern.Preferably, the demodulated reference signal transmissions
Pattern at least includes one below or its combination：The sequence that reference signal is used, the running time-frequency resource that reference signal is used, with reference to letter
Number pattern.
If terminal A is less than by measuring the Signal to Interference plus Noise Ratio that the measuring reference signals that first communication node sends are obtained
20dB, and second communication node according to the measuring reference signals that first communication node sends measure channel it is related when
Between be more than 0.5ms, then terminal A sent for demodulating the data to be transmitted using the second demodulated reference signal transmissions pattern
The demodulated reference signal of bit block, and the demodulated reference signal is sent with the number to be transmitted in the described first transmission resource
According to bit block, the redundant data bits block is transmitted by spread spectrum, single precoding mode in the described second transmission resource.It is excellent
Selection of land, the single precoding mode refer to that second communication node is made on each subcarrier of the described second transmission resource
Carried out data transmission with identical pre-coding matrix.
Base station receives the described first demodulated reference signal sent in resource, determines the transmission mould of the demodulated reference signal
Formula, if base station is successfully decoded the data to be transmitted bit block in the first transmission resource, flow process terminates；If base station exists
It is unsuccessful in first transmission resource to decode the data to be transmitted bit block, then transmission of the base station by the demodulated reference signal
Pattern determines the redundant data bits block for having terminal A to send in the second transmission resource, then base station utilizes what is received
It is described to be transmitted whether the redundant data bits block and the data to be transmitted bit block trial for receiving can be successfully decoded
Data bit block, flow process terminate.
Embodiment 6
Base station to terminal A distribution first send resource and second send resource, wherein it is described first transmission resource be terminal alone
Occupy, the second transmission resource is that terminal A and other terminals are shared.Preferably, as shown in Figure 2, described second
Send the subcarrier in frequency domain number of resource less than the subcarrier in frequency domain number of the described first transmission resource, described second sends resource
Time domain length more than described first send resource time domain length, it is described second send resource with described first send resource when
It is continuous on domain, after the second transmission resource sends resource positioned at described first.
Terminal A generates the data to be transmitted bit block that length is 100, takes out from the data to be transmitted bit block equal intervals
Take 25 bits and generate redundant data bits block, the cyclic redundancy check information comprising 4 bits in the data to be transmitted bit block.
Terminal A has three kinds of candidate's demodulated reference signal transmissions patterns, is referred to as the first demodulated reference signal transmissions pattern,
Second demodulated reference signal transmissions pattern, the 3rd demodulated reference signal transmissions pattern.Preferably, the demodulated reference signal transmissions
Pattern at least includes one below or its combination：The sequence that reference signal is used, the running time-frequency resource that reference signal is used, with reference to letter
Number pattern.
If terminal A is less than by measuring the Signal to Interference plus Noise Ratio that the measuring reference signals that first communication node sends are obtained
20dB, and second communication node according to the measuring reference signals that first communication node sends measure channel it is related when
Between be less than or equal to 0.5ms, then terminal A send described to be transmitted for demodulating using the 3rd demodulated reference signal transmissions pattern
The demodulated reference signal of data bit block, and it is to be passed with described in the described first transmission resource to send the demodulated reference signal
Transmission of data bit block, transmits the redundant data bits by spread spectrum, open-loop precoding mode in the described second transmission resource
Block.Preferably, the open-loop precoding mode refer to terminal A described second transmission resource subcarrier on be used alternatingly it is predetermined
One group of pre-coding matrix of justice carries out data transmission, predefined one group of pre-coding matrix and the demodulated reference signal
There is mapping relations, such as sequence A correspondence pre-coding matrix group A, sequence B correspondence pre-coding matrix group B in the sequence for using.
Base station receives the described first demodulated reference signal sent in resource, determines the transmission mould of the demodulated reference signal
Formula, if base station is successfully decoded the data to be transmitted bit block in the first transmission resource, flow process terminates；If base station exists
It is unsuccessful in first transmission resource to decode the data to be transmitted bit block, then transmission of the base station by the demodulated reference signal
Pattern determines the redundant data bits block for having terminal A to send in the second transmission resource, then base station utilizes what is received
It is described to be transmitted whether the redundant data bits block and the data to be transmitted bit block trial for receiving can be successfully decoded
Data bit block, flow process terminate.
Embodiment 7
Base station to terminal A distribution first send resource and second send resource, wherein it is described first transmission resource be terminal alone
Occupy, the second transmission resource is that terminal A and other terminals are shared.Preferably, as shown in Figure 2, described second
Send the subcarrier in frequency domain number of resource less than the subcarrier in frequency domain number of the described first transmission resource, described second sends resource
Time domain length more than described first send resource time domain length, it is described second send resource with described first send resource when
It is continuous on domain, after the second transmission resource sends resource positioned at described first.
Terminal A generates the data to be transmitted bit block that length is 100, takes out from the data to be transmitted bit block equal intervals
Take 25 bits and generate redundant data bits block, the cyclic redundancy check information comprising 4 bits in the data to be transmitted bit block.
Terminal A has three kinds of candidate's demodulated reference signal transmissions patterns, is referred to as the first demodulated reference signal transmissions pattern,
Second demodulated reference signal transmissions pattern, the 3rd demodulated reference signal transmissions pattern.Preferably, the demodulated reference signal transmissions
Pattern at least includes one below or its combination：The sequence that reference signal is used, the running time-frequency resource that reference signal is used, with reference to letter
Number pattern.
If terminal A determines that only sending resource using described first sends the data to be transmitted bit block, terminal A makes
Sent for demodulating the demodulated reference signal of the data to be transmitted bit block with the first demodulated reference signal transmissions pattern,
And the demodulated reference signal is sent with the data to be transmitted bit block in the described first transmission resource.
If terminal A determines that sending resource using described first sends the data to be transmitted bit block, and using described
Second transmission resource sends the redundant data bits block by spread spectrum, single precoding mode, then terminal A uses described second
Demodulated reference signal transmissions pattern is sent for demodulating the demodulated reference signal of the data to be transmitted bit block, and described
The demodulated reference signal and the data to be transmitted bit block are sent in one transmission resource, is sent described second and lead in resource
Cross spread spectrum, single precoding mode and transmit the redundant data bits block.Preferably, terminal A using frequency expansion sequence be base station
By what is signaled, if total subcarrier number that the second transmission resource is included is more than 256, frequency expansion sequence is puppet
Random sequences, if total subcarrier number that the second transmission resource is included is less than or equal to 256, frequency expansion sequence is Wal
Assorted sequence.Preferably, terminal A described second send resource each subcarrier on transmission power ratio described in first send money
Big more than the 3dB of transmit power on each subcarrier on source, or big log2（Second total number of sub-carriers/for sending resource
One total number of sub-carriers for sending resource）More than dB.
If terminal A determines that sending resource using described first sends the data to be transmitted bit block, and using described
Second transmission resource sends the redundant data bits block by open-loop precoding mode, then terminal A is using the described 3rd demodulation
Reference signal transmission pattern is sent for demodulating the demodulated reference signal of the data to be transmitted bit block, and at described first
Send, send in resource by expanding described second
Frequently, open-loop precoding mode transmits the redundant data bits block.Preferably, terminal A using frequency expansion sequence be that base station passes through
Signal, if total subcarrier number that the second transmission resource is included is more than 256, frequency expansion sequence is pseudorandom
Sequence, if total subcarrier number that the second transmission resource is included is less than or equal to 256, frequency expansion sequence is Walsh sequence
Row.Preferably, in the first transmission resource described in transmission power ratio of terminal A on described second each subcarrier for sending resource
Each subcarrier on big more than the 3dB of transmit power, or big log2（Second total number of sub-carriers/the first for sending resource
Send the total number of sub-carriers of resource）More than dB.
Base station receives the described first demodulated reference signal sent in resource, determines the transmission mould of the demodulated reference signal
Formula, if base station is successfully decoded the data to be transmitted bit block in the first transmission resource, flow process terminates；If base station exists
It is unsuccessful in first transmission resource to decode the data to be transmitted bit block, then transmission of the base station by the demodulated reference signal
Pattern determines the redundant data bits block for whether having terminal A to send in the second transmission resource, if it has, then base station profit
Attempt whether to be successfully decoded with the redundant data bits block for receiving and the data to be transmitted bit block for receiving
The data to be transmitted bit block, flow process terminates, if it did not, flow process terminates.
Embodiment 8
Base station to terminal A distribution first send resource and second send resource, wherein it is described first transmission resource be terminal alone
Occupy, the second transmission resource is that terminal A and other terminals are shared.Preferably, as shown in Figure 2, described second
Send the subcarrier in frequency domain number of resource less than the subcarrier in frequency domain number of the described first transmission resource, described second sends resource
Time domain length more than described first send resource time domain length, it is described second send resource with described first send resource when
It is continuous on domain, after the second transmission resource sends resource positioned at described first.
Terminal A generates the data to be transmitted bit block that length is 100, takes out from the data to be transmitted bit block equal intervals
Take 25 bits and generate redundant data bits block, the cyclic redundancy check information comprising 4 bits in the data to be transmitted bit block.
Terminal A has three kinds of candidate's demodulated reference signal transmissions patterns, is referred to as the first demodulated reference signal transmissions pattern,
Second demodulated reference signal transmissions pattern, the 3rd demodulated reference signal transmissions pattern.Preferably, the demodulated reference signal transmissions
Pattern at least includes one below or its combination：The sequence that reference signal is used, the running time-frequency resource that reference signal is used, with reference to letter
Number pattern（As shown in Figure 3）.
If terminal A determines that only sending resource using described first sends the data to be transmitted bit block, terminal A makes
Sent for demodulating the demodulated reference signal of the data to be transmitted bit block with the first demodulated reference signal transmissions pattern,
And send in resource by sending the wave beam BF-A transmissions demodulated reference signal and the data to be transmitted ratio described first
Special block.
If terminal A determines that sending resource using described first sends the data to be transmitted bit block, and using described
Second transmission resource sends the redundant data bits block by spread spectrum, single precoding mode, then terminal A uses described second
Demodulated reference signal transmissions pattern is sent for demodulating the demodulated reference signal of the data to be transmitted bit block, and described
The demodulated reference signal and the data to be transmitted bit block are sent in one transmission resource, is made in the described second transmission resource
The redundant data bits block is transmitted by spread spectrum, single precoding mode with wave beam BF-B is sent.
If terminal A determines that sending resource using described first sends the data to be transmitted bit block, and using described
Second transmission resource sends the redundant data bits block by open-loop precoding mode, then terminal A is using the described 3rd demodulation
Reference signal transmission pattern is sent for demodulating the demodulated reference signal of the data to be transmitted bit block, and at described first
Send, send to use in resource described second and send out
Wave beam BF-B is sent to transmit the redundant data bits block by spread spectrum, open-loop precoding mode.
Base station determines the demodulation using the demodulated reference signal received in wave beam BF-C receptions the first transmission resource
The transmission mode of reference signal, if base station is successfully decoded the data to be transmitted bit block in the first transmission resource, flows
Journey terminates；If base station is unsuccessful in the first transmission resource to decode the data to be transmitted bit block, base station is by described
The transmission mode of demodulated reference signal determines the redundant data bits for whether having terminal A to send in the second transmission resource
Block, if it has, then base station is using receiving wave beam BF-D using the redundant data bits block for receiving and described in receiving
Data to be transmitted bit block attempts the data to be transmitted bit block whether is successfully decoded, and flow process terminates, if it did not, flow process
Terminate.
Preferably, the beam angle of wave beam BF-A is sent less than wave beam BF-B is sent, receive the beam angle of wave beam BF-C
Less than wave beam BF-D is received, further, the beam coverage for sending wave beam BF-B is covered comprising the wave beam for sending wave beam BF-A
Lid scope, receives the beam coverage of wave beam BF-D comprising the beam coverage for receiving wave beam BF-C.
Test result indicate that, using method of the present invention, by flexibly being provided using distribution according to channel circumstance change
Source carries out redundant data transmissions, can be effective against severe channel variation situation in high-frequency communication, and the reliability of data transfer reaches
To more than 99%, data transfer delay is significantly reduced.
Above content is with reference to specific preferred implementation further description made for the present invention, it is impossible to assert
The present invention be embodied as be confined to these explanations.For general technical staff of the technical field of the invention,
On the premise of without departing from present inventive concept, some simple deduction or replace can also be made, should all be considered as belonging to the present invention's
Protection domain.
Claims (10)
1. a kind of reliable data transmission method, it is characterised in that：The method comprising the steps of：
1）First communication node is that the second communication node distribution first sends resource and the second transmission resource, wherein described first
Send resource to be that second communication node occupies alone, the second transmission resource be second communication node and other the
Two communication nodes sharings, the described second subcarrier in frequency domain number for sending resource sends frequency domain of resource less than described first
Variable number, it is described second send resource time domain length more than described first send resource time domain length, described second
Resource is sent to be continuous in time domain with the described first transmission resource, described second sends resource sends resource positioned at described first
Afterwards；
2）Second communication node generates data to be transmitted bit block of the length for Y, from the data to be transmitted bit block
Extract X bit and generate redundant data bits block, wherein, X and Y is positive integer, and X is less than Y, in the data to be transmitted bit block
Comprising cyclic redundancy check information；
3）Second communication node has three kinds of candidate's demodulated reference signal transmissions patterns, is referred to as the first demodulated reference signal
Transmission mode, the second demodulated reference signal transmissions pattern, the 3rd demodulated reference signal transmissions pattern, if second communication section
Point determines that only sending resource using described first sends the data to be transmitted bit block, then second communication node uses institute
State the first demodulated reference signal transmissions pattern to send for demodulating the demodulated reference signal of the data to be transmitted bit block, and
The demodulated reference signal is sent with the data to be transmitted bit block in the first transmission resource；If second communication
Node determines that using described first to send resource sends the data to be transmitted bit block, and it is logical to send resource using described second
Cross spread spectrum, single precoding mode and send the redundant data bits block, then second communication node is solved using described second
Reference signal transmission pattern is adjusted to send for demodulating the demodulated reference signal of the data to be transmitted bit block, and described first
Send and the demodulated reference signal and the data to be transmitted bit block are sent in resource, pass through in the described second transmission resource
Spread spectrum, single precoding mode transmit the redundant data bits block；If second communication node is determined using described the
One sends resource sends the data to be transmitted bit block, and sends resource by open-loop precoding mode using described second
The redundant data bits block is sent, then second communication node is sent using the 3rd demodulated reference signal transmissions pattern and used
In the demodulated reference signal for demodulating the data to be transmitted bit block, and the demodulation ginseng is sent in the described first transmission resource
Signal and the data to be transmitted bit block are examined, is transmitted by spread spectrum, open-loop precoding mode in the described second transmission resource
The redundant data bits block；
4）First communication node receives the described first demodulated reference signal sent in resource, determines the demodulation reference letter
Number transmission mode, if first communication node first transmission resource on the data to be transmitted bit is successfully decoded
Block, then flow process terminate；If first communication node is unsuccessful in the first transmission resource to decode the data to be transmitted ratio
Special block, then first communication node determine whether have second communication node to send in the second transmission resource described
Redundant data bits block, if it has, then first communication node is using the redundant data bits block and reception for receiving
To the data to be transmitted bit block attempt the data to be transmitted bit block whether is successfully decoded, flow process terminates, if
No, then flow process terminates.
2. data transmission method according to claim 1, it is characterised in that：The demodulated reference signal transmissions pattern is at least
Including one below or its combination：The sequence that reference signal is used, the running time-frequency resource that reference signal is used, the figure of reference signal
Sample.
3. data transmission method according to claim 1, it is characterised in that：If second communication node forward direction
There is no data re-transmission in first communication node, then second communication node is solved using described first in sending data procedures
Reference signal transmission pattern is adjusted to send for demodulating the demodulated reference signal of the data to be transmitted bit block, and described first
Send the demodulated reference signal is sent with the data to be transmitted bit block in resource.
4. data transmission method according to claim 1, it is characterised in that：If second communication node forward direction
There are data in sending data procedures and retransmit in first communication node, and second communication node is according to the described first communication
The measuring reference signals that node sends measure the correlation time of channel more than 0.5ms, then second communication node is using described
Second demodulated reference signal transmissions pattern is sent for demodulating the demodulated reference signal of the data to be transmitted bit block, and in institute
State and in the first transmission resource, send the demodulated reference signal and the data to be transmitted bit block, resource is sent described second
On by spread spectrum, single precoding mode transmit the redundant data bits block.
5. data transmission method according to claim 1, it is characterised in that：If second communication node forward direction
There are data in sending data procedures and retransmit in first communication node, and second communication node is according to the described first communication
The measuring reference signals that node sends measure the correlation time of channel less than or equal to 0.5ms, then the second communication node use
The 3rd demodulated reference signal transmissions pattern is sent for demodulating the demodulated reference signal of the data to be transmitted bit block, and
The demodulated reference signal and the data to be transmitted bit block are sent in the described first transmission resource, is sent described second
The redundant data bits block is transmitted by spread spectrum, open-loop precoding mode in resource.
6. data transmission method according to claim 1, it is characterised in that：If second communication node is by measurement
The Signal to Interference plus Noise Ratio that the measuring reference signals that first communication node sends are obtained is less than 20dB, and the second communication node root
The measuring reference signals sent according to first communication node measure the correlation time of channel more than 0.5ms, then described second leads to
Letter node is sent for demodulating the demodulation of the data to be transmitted bit block using the 3rd demodulated reference signal transmissions pattern
Reference signal, and the demodulated reference signal and the data to be transmitted bit block are sent in the described first transmission resource,
The redundant data bits block is transmitted by spread spectrum, single precoding mode in the second transmission resource；If described second
Communication node is less than 20dB, and institute by measuring the Signal to Interference plus Noise Ratio that the measuring reference signals that first communication node sends are obtained
State the second communication node according to the measuring reference signals that first communication node sends measure correlation time of channel less than etc.
In 0.5ms, then second communication node is sent for demodulating described treating using the 3rd demodulated reference signal transmissions pattern
The demodulated reference signal of transmission data bit block, and described first transmission resource on send the demodulated reference signal with it is described
Data to be transmitted bit block, transmits the redundant data by spread spectrum, open-loop precoding mode in the described second transmission resource
Bit block.
7. data transmission method according to claim 1, it is characterised in that：The spread spectrum sequence that second communication node is used
Row are that first communication node passes through to signal, if total subcarrier number that the second transmission resource is included is more than
256, then frequency expansion sequence is pseudo-random sequence, if total subcarrier number that the second transmission resource is included is less than or equal to
256, then frequency expansion sequence is walsh sequence.
8. data transmission method according to claim 1, it is characterised in that：Second communication node is at described second
Send the described in the transmission power ratio on each subcarrier of resource first transmit power sent on each subcarrier in resource big
More than 3dB, or big log2（Second total number of sub-carriers/the first for sending resource sends the total number of sub-carriers of resource）More than dB.
9. data transmission method according to claim 1, it is characterised in that：The single precoding mode refers to described
Two communication nodes are carried out data transmission using identical pre-coding matrix on each subcarrier of the described second transmission resource；Institute
State open-loop precoding mode refer to second communication node described second transmission resource subcarrier on be used alternatingly it is predetermined
One group of pre-coding matrix of justice carries out data transmission；Predefined one group of pre-coding matrix and the demodulated reference signal
There are mapping relations in transmission mode.
10. data transmission method according to claim 1, it is characterised in that：Second communication node uses send wave
Beam BF-A sends the data to be transmitted bit block in the described first transmission resource, using sending wave beam BF-B described second
Send, the beam angle of the transmission wave beam BF-A is less than the transmission wave beam
BF-B。
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