CN108306716A - A kind of data transmission method and data transmission device - Google Patents
A kind of data transmission method and data transmission device Download PDFInfo
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- CN108306716A CN108306716A CN201710025528.8A CN201710025528A CN108306716A CN 108306716 A CN108306716 A CN 108306716A CN 201710025528 A CN201710025528 A CN 201710025528A CN 108306716 A CN108306716 A CN 108306716A
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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
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/187—Details of sliding window management
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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
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
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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
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
- H04L1/1657—Implicit acknowledgement of correct or incorrect reception, e.g. with a moving window
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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
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
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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
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/1896—ARQ related signaling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- Mobile Radio Communication Systems (AREA)
Abstract
The present invention provides a kind of data transmission method and data transmission device, the present invention reduces time delay of eating dishes without rice or wine in terms of shortening the HARQ feedback time and reducing uplink authorization to upstream data transmission interval two.Interval is sent compared to existing fixed feedback time and fixed uplink, the embodiment of the present invention can be according to the processing capacity of terminal and base station, the sending time of the feedback time and uplink MAC PDU of flexible selection HARQ, the data delay to reduce the highly reliable business of low time delay provide technical support.In addition, example of the present invention can also be as needed, fast dispatch or rapid feedback are carried out for the highly reliable business of low time delay, fast dispatch or rapid feedback function can not be then opened for general service, accomplishes the backward compatibility to general service.
Description
Technical field
The present invention relates to mobile communication technology fields, and in particular to a kind of data transmission method and data transmission device.
Background technology
In next generation communication system (5G), the highly reliable business scenario of low time delay is introduced.This kind of business scenario such as vehicle
Networking, the requirement to data transmission delay and reliability are all relatively stringent.In current long term evolution (LTE) system, when data transmission
Prolong includes mainly protocol stack processing delay and time delay of eating dishes without rice or wine.For downlink data, time delay of eating dishes without rice or wine is mainly possible to eat dishes without rice or wine to mix
Automatic repeat request (HARQ) retransmits the time delay brought.For upstream data, time delay of eating dishes without rice or wine includes 3 parts：
1. send scheduling request or buffer state report (BSR) allocate resources to terminal (UE) to base station between when
Prolong；
2. resource allocation result to upstream data send between time delay；
3. the time delay of uplink data retransmission.
No matter for that situation, time delay caused by HARQ and ascending resource are assigned between upstream data transmission
Time delay be fixed, and account for certain proportion in overall propagation delay time.In existing LTE system, no matter adopt
With which kind of uplink-downlink configuration, the corresponding HARQ feedback of downlink data and upstream data between corresponding HARQ feedback when
Between interval be usually fixed.
The following table 1 gives the feedback sequential relationship of time division duplex (TDD) downlink HARQ, the lower line number in table 1 on subframe n-k
It is sent on sub-frame of uplink n according to corresponding HARQ feedback.For all sub-frame configurations, downlink data and corresponding HARQ feedback it
Between interval be fixed.Such as in the case of TDD sub-frame configurations 2, the corresponding HARQ feedback of downlink data of subframe of eating dishes without rice or wine 4
(time interval k=8) is sent in subframe 12, the corresponding HARQ feedback of downlink data of subframe of the eating dishes without rice or wine 5 (time in subframe 12
It is spaced k=7), the corresponding HARQ feedback of downlink data of subframe of eating dishes without rice or wine 6 is in subframe 12 (time interval k=6), subframe of eating dishes without rice or wine 8
The corresponding HARQ feedback of downlink data of transmission is also in subframe 12 (time interval k=4).
Table 1:The relevant K values of downlink HARQ in TDD
The following table 2 gives the example of the sequential relationship of TDD upstream datas and corresponding HARQ feedback in LTE system.It can be with
Find out no matter which kind of frame structure is configured, the time interval of upstream data and HARQ feedback is fixed.
Table 2:The interval k of HARQ feedback and PUSCH data in TDD
In existing LTE system, no matter uplink or downlink are usually fixed the HARQ feedback time, uplink authorization and upper
It is also to have fixed time interval between row data transmission, these can all cause the time delay of air interface transmission.In existing scheme, own
Terminal be required for being handled according to the timing relationship.
Invention content
Technical problems to be solved of the embodiment of the present invention are to provide a kind of data transmission method and data transmission device, to
The fixation timing relationship of change data transmission provides technical support to reduce data delay.
In order to solve the above technical problems, data transmission method provided in an embodiment of the present invention, including：
The first data are received, the first sending time of the first data is recorded；
According between first sending time, the preset length and the second data and the first data for sending window
Maximum delay, determine the second data first send window；
It is sent in window described first, sends second data；
Wherein, when first data are the first business datum, second data are the feedback of the first business datum
Information；When first data are the first uplink authorization information, second data are that the first uplink authorization information is corresponding
First upstream data.
Another kind data transmission method provided in an embodiment of the present invention, including：
The first data are sent, the first sending time of the first data is recorded；
According between first sending time, the preset length and the second data and the first data for sending window
Maximum delay, determine the second data first send window；
It is sent in window described first, receives second data；
Wherein, when first data are the first business datum, second data are the feedback of the first business datum
Information；When first data are the first uplink authorization information, second data are that the first uplink authorization information is corresponding
First upstream data.
A kind of data transmission device provided in an embodiment of the present invention, including：
First receiving unit records the first sending time of the first data for receiving the first data；
First determination unit, for according to first sending time, the preset length for sending window and the second number
According to the maximum delay between the first data, determine that the first of the second data sends window；
First transmission unit sends second data for being sent in window described first；
Wherein, when first data are the first business datum, second data are the feedback of the first business datum
Information；When first data are the first uplink authorization information, second data are that the first uplink authorization information is corresponding
First upstream data.
Another kind data transmission device provided in an embodiment of the present invention, including：
Transmission unit records the first sending time of the first data for sending the first data；
First determination unit, for according to first sending time, the preset length for sending window and the second number
According to the maximum delay between the first data, determine that the first of the second data sends window；
First receiving unit receives second data for being sent in window described first；
Wherein, when first data are the first business datum, second data are the feedback of the first business datum
Information；When first data are the first uplink authorization information, second data are that the first uplink authorization information is corresponding
First upstream data.
Data transmission method and data transmission device provided in an embodiment of the present invention, from shortening HARQ feedback time and reduction
Uplink authorization sends two aspect of interval to upstream data and reduces time delay of eating dishes without rice or wine.Compared to existing fixed feedback time and fixed uplink
Send interval, the embodiment of the present invention can according to the processing capacity of terminal and base station, the flexible feedback time for selecting HARQ and
The sending time of uplink MAC PDU, the data delay to reduce the highly reliable business of low time delay provide technical support.In addition, this hair
Bright embodiment can also be as needed, fast dispatch or rapid feedback is carried out for the highly reliable business of low time delay, for common
Business can not then open fast dispatch or rapid feedback function, accomplish the backward compatibility to general service.
Description of the drawings
Fig. 1 is a kind of flow diagram of data transmission method provided in an embodiment of the present invention；
Fig. 2 is the flow diagram of another data transmission method provided in an embodiment of the present invention；
Fig. 3 is the schematic diagram of the transmission window of downlink HARQ feedback in the embodiment of the present invention；
Fig. 4 is the schematic diagram of the transmission window of uplink HARQ feedback in the embodiment of the present invention；
Fig. 5 is the schematic diagram of the transmission window of upstream data in the embodiment of the present invention；
Fig. 6 is a kind of structural schematic diagram of data transmission device provided in an embodiment of the present invention；
Fig. 7 is the structural schematic diagram of another data transmission device provided in an embodiment of the present invention.
Specific implementation mode
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.In the following description, such as specific configuration is provided and the specific detail of component is only
In order to help comprehensive understanding the embodiment of the present invention.It therefore, it will be apparent to those skilled in the art that can be to reality described herein
Example is applied to make various changes and modifications without departing from scope and spirit of the present invention.In addition, for clarity and brevity, it is omitted pair
The description of known function and construction.
It should be understood that " one embodiment " or " embodiment " that specification is mentioned in the whole text mean it is related with embodiment
A particular feature, structure, or characteristic includes at least one embodiment of the present invention.Therefore, occur everywhere in the whole instruction
" in one embodiment " or " in one embodiment " not necessarily refer to identical embodiment.In addition, these specific feature, knots
Structure or characteristic can in any suitable manner combine in one or more embodiments.
In various embodiments of the present invention, it should be appreciated that the size of the serial number of following each processes is not meant to execute suitable
The execution sequence of the priority of sequence, each process should be determined by its function and internal logic, the implementation without coping with the embodiment of the present invention
Process constitutes any restriction.
In addition, the terms " system " and " network " are often used interchangeably herein.It should be understood that the terms
"and/or", only a kind of incidence relation of description affiliated partner, indicates may exist three kinds of relationships, for example, A and/or B, it can
To indicate：Individualism A exists simultaneously A and B, these three situations of individualism B.In addition, character "/" herein, typicallys represent
Forward-backward correlation object is a kind of relationship of "or".In embodiment provided herein, it should be appreciated that " B corresponding with A " is indicated
B is associated with A, and B can be determined according to A.It is also to be understood that determining that B is not meant to determine B only according to A according to A, may be used also
To determine B according to A and/or other information.
In the embodiment of the present invention, the form of the base station is unlimited, can be macro base station (Macro Base Station), micro-
Base station (Pico Base Station), Node B (address of the mobile base stations 3G), enhanced base station (eNB), the enhanced base of family
Stand (Femto eNB or Home eNode B or Home eNB or HeNB), relay station, access point, RRU (Remote Radio
Unit, far-end RF module), RRH (Remote Radio Head, remote radio head), the network side in 5G mobile communication system
Node, such as central location (CU, Central Unit) and distributed unit (DU, Distributed Unit) etc..The terminal
Can be mobile phone (or mobile phone) or other equipment that can send or receive wireless signal, including user equipment (UE),
Personal digital assistant (PDA), radio modem, wireless communication device, hand-held device, laptop computer, wireless phone,
Wireless local loop (WLL) stands, movable signal can be converted to CPE (the Customer Premise of WiFi signal
Equipment, client terminal) or intelligent movable hot spot, intelligent appliance or other obstructed remarkable operations can it is spontaneous with it is mobile
The equipment etc. of communication.
No matter uplink or downlink are usually fixed the HARQ feedback time to existing mobile communication system, uplink authorization and
It is also to have fixed time interval between transmitting uplink data.And with the enhancing of terminal and base station processing capacity, it is required
Processing time is gradually shortened.And existing timing relationship limits the time delay eated dishes without rice or wine, no matter for example, for which kind of business, HARQ
Feedback is required for waiting for the identical time.The embodiment of the present invention is from shortening HARQ feedback time delay, reduce uplink authorization and uplink tune
From the aspect of time interval two between degree, proposes a kind of data transmission method of the highly reliable business of new low delay, reduce
Data delay.
Fig. 1 is please referred to, data transmission method provided in an embodiment of the present invention can be applied to base station side or end side, including：
Step 11, the first data are received, the first sending time of the first data is recorded.
Here, the first data can be business datum, can also be uplink authorization information.In the embodiment of the present invention, the time
It can be indicated with the position of the time-domain transmission resource of transmission data.For example, the first sending time of the first data may be used
The position of time-domain transmission resource (subframe, the OFDM symbol of such as LTE system) where first data indicates, certainly, different
Communication system may use the time-domain transmission resource of different size.In addition, the time can also use other modes to indicate, such as system
Time etc..
Step 12, according to first sending time, the preset length for sending window and the second data and the first number
Maximum delay between determines that the first of the second data sends window.
Here, when first data are the first business datum, second data are the feedback of the first business datum
Information, i.e. HARQ feedback information, such as the ACK/NACK information for indicating data receiver success or failure.In first data
For the first uplink authorization information when, second data be corresponding first upstream data of the first uplink authorization information.
In the embodiment of the present invention, when base station side and end side have preset the maximum between the first data and the second data
Prolong, and preset the length for sending window, thus, it is possible to determine the specific location of transmission window.Specifically, can be with
According to formula K+N-L, determine that the first of the second data send the lower boundary of window, and, according to formula K+N, determine the second number
According to the first coboundary for sending window, wherein K indicates that the first sending time, N indicate between the second data and the first data
Maximum delay, L indicate to send the length of window.
Certainly, other than making an appointment, base station can also such as send MAC layer signaling or RRC by way of signaling message
Signaling carrys out the maximum delay between the first data of dynamic configuration and the second data, and has preset the length for sending window.
In addition, when first data are the first uplink authorization information, described in base station can carry in the first uplink authorization information
Send the parameters such as the maximum delay between the length and the second data and the first data of window.
Step 13, it is sent in window described first, sends second data.
By above step, the embodiment of the present invention changes the fixation timed-shutoff of the HARQ feedback in existing communication system
System, or changes the fixation timing relationship between uplink authorization and uplink, and thus base station equipment or terminal device can be with
According to own processing capabilities, the second data are sent sending the proper moment in window, technology is provided to reduce data delay
It supports.
For example, for delay sensitive business, prepare if transmission is completed when the lower boundary for sending window reaches, it can be with
It carries out sending the second data immediately, or is sent in the front half section for sending window.It, then can be with for the insensitive business of time delay
It is sent in any position for sending window, for example, being sent in the second half section for sending window
In order to consider that the compatibility with existing system, the embodiment of the present invention can be by the forms of functional switch, to determine
Whether transmission scheme shown in FIG. 1 is carried out.For example, after above-mentioned steps 11, the embodiment of the present invention can further judge institute
State whether corresponding first business of the first data is configured with low time delay transfer function：If so, into step 12~13, with
Window, which is sent, by first sends the second data；Otherwise, according to default fixed feedback sequential relationship, the first sending time pair is determined
The first sending time answered, and send second data when first sending time reaches.Here it is possible to according to existing
The similar realization method of technology determines the first sending time and carries out the transmission of the second data, and repeats no more herein.
When above-mentioned first data are the first business datum, second data are the feedback information of the first business datum.
In order to improve the transmission reliability of HARQ feedback information, in above-mentioned steps 13, can be sent in window described first, repeatedly
Send the feedback information of first data.In addition, when sending the feedback information of first data, it can be described first
Send the feedback information that first data are carried on the preconfigured transfer resource in window.Here transfer resource can be with
It is the time-frequency domain resources that base station is configured by signaling message.Furthermore for the flexible dynamic HARQ feedback of the embodiment of the present invention
Mechanism, the feedback letter of first data may include the ACK/ of the reception success or failure for indicating current institute's feedback data
Nack message further includes the instruction information for indicating current institute's feedback data, for example, indicate current feedback is the first data
ACK/NACK information.Above-mentioned instruction information can also be passed through by the corresponding HARQ process numbers of current institute's feedback data
The corresponding transmission sequence identification of current institute feedback data.Above two mark mode is by way of example only, any to can be used for referring to
The identification means for showing the first data, can be applied to the embodiment of the present invention.
When first data are the first uplink authorization information, second data correspond to for the first uplink authorization information
The first upstream data.At this point, the first uplink authorization information may include the transmission money for the uplink authorization for having the similar prior art
Can also include ascending HARQ course outside the information such as source, modulating-coding strategy (MCS) number, transmission power control (TPC) parameter
Number and redundancy versions (RV) information.In addition, base station can also carry the length for sending window in the first uplink authorization information
The parameters such as degree and the maximum delay between the second data and the first data, for determining the transmission window in step 12.
When sending first upstream data in above-mentioned steps 13, first can be sent in the first transmission window
Upstream data, and explicitly or implicitly send the ascending HARQ course number.Explicit send refers to being sent in window described first
In the message of the first upstream data sent, the ascending HARQ course number is directly carried.Implicit send refers to not in transmission
The ascending HARQ course number is directly carried in the message of first upstream data, but indicates ascending HARQ by other means
Process number, for example, can preset different demodulated reference signal occupy symbolic number (NDMRS) correspond to different HARQ into
Journey is sent when sending the first upstream data according to the corresponding NDMRS of the ascending HARQ course number, to which base station exists
When reception, MAC PDU can be gone out according to physical layer modulation, determine corresponding HARQ process numbers.
Corresponding with the above method, the embodiment of the present invention additionally provides a kind of data transmission method, above-mentioned to receive
The second data sent in step 13, the flow of this method are as shown in Figure 2.For example, working as method shown in Fig. 1 is applied to base station side
When, flow shown in Fig. 2 is then applied to end side；Conversely, when the method shown in Fig. 1 is applied to end side, flow shown in Fig. 2
Then it is applied to base station side.As shown in Fig. 2, the data transmission method includes：
Step 21, the first data are sent, the first sending time of the first data is recorded.
Step 22, according to first sending time, the preset length for sending window and the second data and the first number
Maximum delay between determines that the first of the second data sends window.
Here, when first data are the first business datum, second data are the feedback of the first business datum
Information；When first data are the first uplink authorization information, second data are that the first uplink authorization information is corresponding
First upstream data.Determine that the mode of the first transmission window may include：According to formula K+N-L, the first of the second data is determined
The lower boundary of window is sent, and, according to formula K+N, determine that the first of the second data sends the coboundary of window, wherein K tables
Show that the first sending time, N indicate that the maximum delay between the second data and the first data, L indicate to send the length of window.
When first data are the first uplink authorization information, base station can carry institute in the first uplink authorization information
State the parameters such as the maximum delay between the length and the second data and the first data that send window.At this point, in step 22, eventually
End obtains the length for sending window and the maximum delay parameter, Jin Ergen according to parsing in the first uplink authorization information
According to first sending time, it is preset send window length and the second data and the first data between maximum delay,
First that the second data are calculated sends window.
Step 23, it is sent in window described first, receives second data.
By above step, the embodiment of the present invention, which realizes, receives Correspondent Node is sent in the first transmission window second
Data realize the reception processing of data.
Here, when first data are the first business datum, in above-mentioned steps 23, further in first hair
It send on the preconfigured transfer resource in window, receives the feedback information of first data.The feedback of first data
Information specifically includes：Instruction information for indicating current institute's feedback data；For indicate the reception of current institute's feedback data at
Work(or the ACK/NACK information of failure.Wherein, described for indicating that the instruction information of current institute's feedback data can be current institute
The corresponding HARQ process numbers of feedback data；Or, the corresponding transmission sequence identification of current institute feedback data.
Here, when first data are the first uplink authorization information, on first uplink authorization information includes
Transfer resource, ascending HARQ course number and the redundancy version information that row authorizes；In above-mentioned steps 23, further receive it is explicit or
The ascending HARQ course number implicitly sent, and determine the corresponding uplink authorization of the ascending HARQ course number, according on this
The ascending resource and parameter that row authorizes, parsing obtain the first upstream data.
Similar, the embodiment of the present invention can also further increase a judgment step, to determine after above-mentioned steps 21
It is fixed whether to use reception scheme shown in Fig. 2.For example, after above-mentioned steps 21, the embodiment of the present invention can further judge
Whether corresponding first business of first data is configured with low time delay transfer function：If so, into step 22~23,
To receive the second data of window reception by first；Otherwise, according to default fixed feedback sequential relationship, the first sending time is determined
Corresponding first sending time, and receive second data when first sending time reaches.Here it is possible to according to existing
There is the realization method that technology is similar, determine the first sending time and carry out the reception of the second data, repeats no more herein.
Scene will be sent respectively in connection with HARQ feedback scene and upstream data below to make in more detail above example
Explanation.
HARQ feedback scene：
The embodiment of the present invention is by that based on the HARQ feedback mechanism for sending window, can shorten certain business (such as when low
Prolong highly reliable business) time delay, illustrated by taking LTE system as an example below, hereafter when illustrating, the time passes through subframe position
It sets to characterize.
As shown in figure 3, for the downlink subframe K for each needing HARQ feedbackDL, network side and end side can be preset
The corresponding subframe M of HARQ feedbackDLWith downlink subframe KDLBetween the upper limit N that is spacedDL(i.e. between the second data and the first data
Maximum delay) and HARQ feedback transmission length of window LDL.Above-mentioned preset parameter can be in advance at base station and terminal
It has been configured that, can also be to first pass through signaling message in advance by base station to be configured for terminal.Then, base station and terminal can roots
According to above-mentioned parameter preset, the transmission window for calculating downlink HARQ feedback information is KDL+NDL-LDL<MDL<=KDL+NDL, and then terminal
The transmission of HARQ feedback information can be carried out in above-mentioned transmission window, it is anti-that base station can carry out HARQ in above-mentioned transmission window
The reception of feedforward information.
As shown in figure 4, for the sub-frame of uplink K for each needing HARQ feedbackUL, network side and end side can be preset
The corresponding subframe M of HARQ feedbackULWith subframe KULBetween the upper limit N that is spacedUL(i.e. maximum between the second data and the first data
Time delay) and HARQ feedback transmission length of window LUL.Above-mentioned preset parameter can be configured at base station and terminal in advance
Alright, can also be to first pass through signaling message in advance by base station to be configured for terminal.Then, base station and terminal can be according to upper
Parameter preset is stated, the transmission window M of ascending HARQ is calculatedULFor KUL+NUL-LUL<MUL<=KUL+NUL, and then base station can be above-mentioned
The transmission that HARQ feedback information is carried out in window is sent, terminal can carry out connecing for HARQ feedback information in above-mentioned transmission window
It receives.
The fixed HARQ feedback time by being extended to the time window of one section of HARQ feedback by above scheme.If terminal
Or base station has faster processing capacity, then terminal/base station can be allowed to send HARQ in advance in HARQ feedback time window anti-
Feedback.Said program provides the time window range of HARQ feedback time, does not know the specific HARQ feedback time.Relative to traditional
Fixed HARQ feedback sequential, this programme so that HARQ feedback time point air interface transmission time of different user different business is flexible
Variable.Terminal and base station can report the feedback result of HARQ as soon as possible, timely feedback HARQ according to the processing capacity of itself
Information, to reduce the time delay of data.
In order to ensure the correct parsing of HARQ feedback, the influence to set time HARQ feedback is reduced, on the one hand, for low
The highly reliable business of time delay, the reliability of the transmission of feedback information need to improve, for example are sending window using HARQ feedback information
Interior multiplicating sending method is sent.On the other hand, on the basis of existing HARQ feedback information is transmitted, can increase
The transmission mechanism of HARQ feedback.
Can be transmission of the terminal in HARQ feedback in advance 1. for the flexible dynamic HARQ feedback of the embodiment of the present invention
The fixed transfer resource of configuration in window, to carry HARQ feedback information.The configuration of specific transfer resource, can pass through MAC
Layer signaling or RRC signaling are realized.By configuring fixed transfer resource, the HARQ that can simplify in the transmission window is anti-
The reception of feedforward information is handled, and is reduced and is received complexity, and successful receiving rate is improved.
2. for the flexible dynamic HARQ feedback of the embodiment of the present invention, can also redesign HARQ feedback information includes
Content.Specifically, the embodiment of the present invention can increase the corresponding data of HARQ feedback in feedback content.HARQ feedback and number
According to correspondence can mark in several ways：A kind of mode is identified by HARQ process numbers, and another kind will be needed currently
The HARQ information to be fed back, the sequencing sent according to corresponding data are identified, and when HARQ feedback carries this feedback coefficient
According to sequence identification.By way of example only, the present invention is not limited thereto for both the above mark mode.
Upstream data sends scene：
In existing LTE system, what the time interval between ascending resource distribution and upstream data transmission was usually fixed.Such as
Shown in the following table 3, uplink authorization information that subframe n is received corresponds in the upstream data on subframe n+k of eating dishes without rice or wine, uplink authorization and upper
Interval between row data is fixed interval.
Table 3:The interval k that uplink authorization and upstream data are sent in TDD
In order to further shorten the time delay eated dishes without rice or wine, the embodiment of the present invention proposes in a kind of data transmission method, it is assumed that
Subframe KDCIThe uplink authorization information received presets upstream data and sends subframe and subframe KDCIBetween the upper limit N that is spacedUL
The length L of the transmission window of (i.e. maximum delay between the second data and the first data) and upstream dataDCI, then, such as scheme
Shown in 5, the time r that the transmission window of upstream data can be calculated should meet KDCI+NDCI-LDCI<r<=KDCI+NDCI.Base
Standing can be when sending uplink authorization information, and the upstream data that a segment length is configured for terminal sends window, specifically, can be
The ginsengs such as the maximum delay between the length and the second data and the first data for sending window are carried in uplink authorization information
Number.In this way, terminal can extract above-mentioned parameter from uplink authorization information, and then determines and send the hair that window carries out upstream data
It send.
It is sent in addition, above scheme makes upstream data into on-fixed timing, also reforms into upstream Asynchronous HARQ, the present invention
Embodiment can increase ascending HARQ course number and redundancy versions (RV) information newly in the uplink authorization information that base station is sent, in addition
Terminal is dominant in the upstream data of transmission or recessive indicates ascending HARQ course number.In this way, base station is receiving upper line number
According to when, it is first determined whether there is upstream data, if so, then being carried according to the uplink authorization information of corresponding HARQ instance process number upper
Row transfer resource and parameter are parsed.
Since different business has time delay a different demands, the embodiment of the present invention further increases Fast HARQ feedback and fast
The configuration of fast uplink scheduling function.Above-mentioned function is only opened, the embodiment of the present invention is just according to the flow of above-mentioned Fig. 1 or Fig. 2
Carry out Fast HARQ feedback processing and the processing of fast uplink data dispatch；It, can be according to existing if not opening above-mentioned function
The realization method of technology is handled using the HARQ feedback or uplink data scheduling of fixed timing relationship.It, can by the functional configuration
To realize the backward compatibility with existing scheme.
The data transmission method of the embodiment of the present invention is described above.It is further provided below and implements setting for the above method
It is standby.Please refer to Fig. 6, a kind of data transmission device provided in an embodiment of the present invention, including：
First receiving unit 61 records the first sending time of the first data for receiving the first data；
First determination unit 62, for according to first sending time, the preset length and second for sending window
Maximum delay between data and the first data determines that the first of the second data sends window；
First transmission unit 63 sends second data for being sent in window described first；
Wherein, when first data are the first business datum, second data are the feedback of the first business datum
Information；When first data are the first uplink authorization information, second data are that the first uplink authorization information is corresponding
First upstream data.
Specifically, above-mentioned data transmission device can be set to base station side, at this point, first data are the first business number
According to (the specific can be that uplink business data of the first business), second data are the feedback information of the first business datum.
Above-mentioned data transmission device can also be set to end side, at this point, first data be the first business datum (specifically can be with
It is the downlink service data of the first business), second data are the feedback information of the first business datum；Alternatively, described first
Data are the first uplink authorization information, and second data are corresponding first upstream data of the first uplink authorization information.
Here, first determination unit is specifically used for, according to formula K+N-L, determining that the first of the second data sends window
The lower boundary of mouth, and, according to formula K+N, determine that the first of the second data sends the coboundary of window, wherein K indicates first
Sending time, N indicate that the maximum delay between the second data and the first data, L indicate to send the length of window.
Wherein, when first data are the first business datum, first transmission unit is further used for described
First sends in window, repeatedly sends the feedback information of first data, and, it is sent described first advance in window
The feedback information of first data is carried on the transfer resource of configuration.Specifically, the feedback letter of first data can wrap
It includes：Instruction information for indicating current institute's feedback data；Reception success or failure for indicating current institute's feedback data
ACK/NACK information etc..Wherein, described for indicating that the instruction information of current institute's feedback data may include then：Currently fed back
The corresponding HARQ process numbers of data；Or, the corresponding transmission sequence identification of current institute feedback data.
Wherein, when first data are the first uplink authorization information, on first uplink authorization information includes
Transfer resource, ascending HARQ course number and the redundancy version information that row authorizes；First transmission unit, is further used in institute
It states and sends the first upstream data in the first transmission window, and explicitly or implicitly send the ascending HARQ course number.
Further, above-mentioned data transmission device further includes：
Judging unit, for receiving the first data in first receiving unit, when recording the first transmission of the first data
Between after, judge whether corresponding first business of first data is configured with low time delay transfer function：If so, triggering first
Otherwise determination unit triggers the second determination unit；
Second determination unit, for according to default fixed feedback sequential relationship, determining the first sending time corresponding first
Sending time；
Second transmission unit, for sending second data when first sending time reaches.
Fig. 7 is please referred to, the embodiment of the present invention additionally provides another data transmission device, including：
Transmission unit 71 records the first sending time of the first data for sending the first data；
First determination unit 72, for according to first sending time, the preset length and second for sending window
Maximum delay between data and the first data determines that the first of the second data sends window；
First receiving unit 73 receives second data for being sent in window described first；
Wherein, when first data are the first business datum, second data are the feedback of the first business datum
Information；When first data are the first uplink authorization information, second data are that the first uplink authorization information is corresponding
First upstream data.
Specifically, above-mentioned data transmission device can be set to base station side, at this point, first data are the first business number
According to (the specific can be that uplink business data of the first business), second data are the feedback information of the first business datum；
Alternatively, first data are the first uplink authorization information, second data are the first uplink authorization information corresponding first
Upstream data.Above-mentioned data transmission device can also be set to end side, at this point, first data are the first business datum
(the specific can be that downlink service data of the first business), second data are the feedback information of the first business datum.
Here, first determination unit is specifically used for, according to formula K+N-L, determining that the first of the second data sends window
The lower boundary of mouth, and, according to formula K+N, determine that the first of the second data sends the coboundary of window, wherein K indicates first
Sending time, N indicate that the maximum delay between the second data and the first data, L indicate to send the length of window.
In the embodiment of the present invention, when first data are the first business datum, above-mentioned first receiving unit 73, into one
It walks on the preconfigured transfer resource for sending in window described first, receives the feedback information of first data.It is described
The feedback information of first data specifically includes：Instruction information for indicating current institute's feedback data；For indicating that current institute is anti-
Present the ACK/NACK information of the reception success or failure of data.Wherein, the instruction letter for indicating current institute's feedback data
Breath can be the corresponding HARQ process numbers of current institute's feedback data；Or, the corresponding transmission sequence identification of current institute feedback data.
Here, when first data are the first uplink authorization information, on first uplink authorization information includes
Transfer resource, ascending HARQ course number and the redundancy version information that row authorizes；Above-mentioned first receiving unit 73 further receives aobvious
Formula or the ascending HARQ course number implicitly sent, and determine the corresponding uplink authorization of the ascending HARQ course number, according to
The ascending resource and parameter of the uplink authorization, parsing obtain the first upstream data.
Further, above-mentioned data transmission device, may further include the following units：
Judging unit, for the transmission unit send the first data, record the first data the first sending time it
Afterwards, judge whether corresponding first business of first data is configured with low time delay transfer function：If so, triggering first determines
Otherwise unit triggers the second determination unit；
Second determination unit, for according to default fixed feedback sequential relationship, determining the first sending time corresponding first
Sending time；
Second transmission unit, for receiving second data when first sending time reaches.
To sum up, data transmission method and data transmission device provided in an embodiment of the present invention, can be from shortening HARQ feedback
Time and reduction uplink authorization send two aspect of interval to upstream data and reduce time delay of eating dishes without rice or wine.Compared to existing fixed feedback time
Interval is sent with fixed uplink, the embodiment of the present invention can be flexible to select HARQ's according to the processing capacity of terminal and base station
The sending time of feedback time and uplink MAC PDU, the data delay to reduce the highly reliable business of low time delay provide technical support.
In addition, the embodiment of the present invention can also be as needed, fast dispatch or rapid feedback are carried out for the highly reliable business of low time delay,
Fast dispatch or rapid feedback function can not be then opened for general service, accomplish the backward compatibility to general service.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, several improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (22)
1. a kind of data transmission method, which is characterized in that including：
The first data are received, the first sending time of the first data is recorded；
According to first sending time, it is preset send window length and the second data and the first data between most
Long time delay determines that the first of the second data sends window；
It is sent in window described first, sends second data；
Wherein, when first data are the first business datum, second data are the feedback information of the first business datum；
When first data are the first uplink authorization information, second data are in the first uplink authorization information corresponding first
Row data.
2. the method as described in claim 1, which is characterized in that described according to first sending time, preset transmission window
Maximum delay between the length and the second data and the first data of mouth determines that the first of the second data sends the step of window
Suddenly include：
According to formula K+N-L, determine that the first of the second data send the lower boundary of window, and, according to formula K+N, determine the
The first of two data sends the coboundary of window, wherein K indicates the first sending time, N indicate the second data and the first data it
Between maximum delay, L indicate send window length.
3. the method as described in claim 1, which is characterized in that first data be the first business datum when, it is described
Described first includes the step of sending in window, send second data：It is sent in window described first, repeatedly sends institute
State the feedback information of the first data.
4. the method as described in claim 1, which is characterized in that first data be the first business datum when, it is described
Described first includes the step of sending in window, send second data：Being pre-configured in the first transmission window
Transfer resource on carry the feedback informations of first data.
5. the method as described in claim 1, which is characterized in that the feedback information of first data includes：For indicating to work as
The instruction information of preceding institute's feedback data；ACK/NACK information for the reception success or failure for indicating current institute's feedback data.
6. method as claimed in claim 5, which is characterized in that the instruction packet for indicating current institute's feedback data
It includes：The corresponding HARQ process numbers of current institute feedback data；Or, the corresponding transmission sequence identification of current institute feedback data.
7. the method as described in claim 1, which is characterized in that when first data are the first uplink authorization information, institute
State the transfer resource, ascending HARQ course number and redundancy version information that the first uplink authorization information includes uplink authorization；It is described
It is described first send window in, send second data the step of include：First is sent in the first transmission window
Upstream data, and explicitly or implicitly send the ascending HARQ course number.
8. method as described in any one of claim 1 to 7, which is characterized in that in the first data of the reception, the first number of record
According to the first sending time the step of after, further include：
Judge whether corresponding first business of first data is configured with low time delay transfer function：
If so, into it is described according to first sending time, the preset length for sending window and the second data and the
Maximum delay between one data determines the step of the first of the second data sends window；
Otherwise, according to default fixed feedback sequential relationship, corresponding first sending time of the first sending time is determined, and described
First sending time sends second data when reaching.
9. a kind of data transmission method, which is characterized in that including：
The first data are sent, the first sending time of the first data is recorded；
According to first sending time, it is preset send window length and the second data and the first data between most
Long time delay determines that the first of the second data sends window；
It is sent in window described first, receives second data；
Wherein, when first data are the first business datum, second data are the feedback information of the first business datum；
When first data are the first uplink authorization information, second data are in the first uplink authorization information corresponding first
Row data.
10. method as claimed in claim 9, which is characterized in that described according to first sending time, preset transmission window
Maximum delay between the length and the second data and the first data of mouth determines that the first of the second data sends the step of window
Suddenly include：
According to formula K+N-L, determine that the first of the second data send the lower boundary of window, and, according to formula K+N, determine the
The first of two data sends the coboundary of window, wherein K indicates the first sending time, N indicate the second data and the first data it
Between maximum delay, L indicate send window length.
11. method as claimed in claim 9, which is characterized in that in the first data of the transmission, record the first of the first data
After the step of sending time, further include：
Judge whether corresponding first business of first data is configured with low time delay transfer function：
If so, into it is described according to first sending time, the preset length for sending window and the second data and the
Maximum delay between one data determines the step of the first of the second data sends window；
Otherwise, according to default fixed feedback sequential relationship, corresponding first sending time of the first sending time is determined, and described
First sending time receives second data when reaching.
12. a kind of data transmission device, which is characterized in that including：
First receiving unit records the first sending time of the first data for receiving the first data；
First determination unit, for according to first sending time, it is preset send window length and the second data with
Maximum delay between first data determines that the first of the second data sends window；
First transmission unit sends second data for being sent in window described first；
Wherein, when first data are the first business datum, second data are the feedback information of the first business datum；
When first data are the first uplink authorization information, second data are in the first uplink authorization information corresponding first
Row data.
13. data transmission device as claimed in claim 12, which is characterized in that first determination unit is specifically used for root
According to formula K+N-L, determine that the first of the second data send the lower boundary of window, and, according to formula K+N, determine the second data
The first coboundary for sending window, wherein K indicates that the first sending time, N indicate between the second data and the first data most
Long time delay, L indicate to send the length of window.
14. data transmission device as claimed in claim 12, which is characterized in that first data be the first business datum
When, first transmission unit is further used for sending in window described first, repeatedly sends the feedback of first data
Information.
15. data transmission device as claimed in claim 12, which is characterized in that first data be the first business datum
When, first transmission unit is further used for carrying on the preconfigured transfer resource in the first transmission window
The feedback information of first data.
16. data transmission device as claimed in claim 12, which is characterized in that the feedback information of first data includes：
Instruction information for indicating current institute's feedback data；ACK/ for the reception success or failure for indicating current institute's feedback data
Nack message.
17. data transmission device as claimed in claim 16, which is characterized in that described for indicating current institute's feedback data
Indicate that information includes：The corresponding HARQ process numbers of current institute feedback data；Or, the corresponding transmission sequence of current institute feedback data is marked
Know.
18. data transmission device as claimed in claim 12, which is characterized in that first data be the first uplink authorization
When information, first uplink authorization information includes the transfer resource, ascending HARQ course number and redundancy versions of uplink authorization
Information；First transmission unit is further used for sending the first upstream data in the first transmission window, and it is explicit or
Implicitly send the ascending HARQ course number.
19. such as claim 12 to 18 any one of them data transmission device, which is characterized in that further include：
Judging unit, for first receiving unit receive the first data, record the first data the first sending time it
Afterwards, judge whether corresponding first business of first data is configured with low time delay transfer function：If so, triggering first determines
Otherwise unit triggers the second determination unit；
Second determination unit, for according to default fixed feedback sequential relationship, determining that the first sending time corresponding first is sent
Time；
Second transmission unit, for sending second data when first sending time reaches.
20. a kind of data transmission device, which is characterized in that including：
Transmission unit records the first sending time of the first data for sending the first data；
First determination unit, for according to first sending time, it is preset send window length and the second data with
Maximum delay between first data determines that the first of the second data sends window；
First receiving unit receives second data for being sent in window described first；
Wherein, when first data are the first business datum, second data are the feedback information of the first business datum；
When first data are the first uplink authorization information, second data are in the first uplink authorization information corresponding first
Row data.
21. data transmission device as claimed in claim 20, which is characterized in that first determination unit is specifically used for root
According to formula K+N-L, determine that the first of the second data send the lower boundary of window, and, according to formula K+N, determine the second data
The first coboundary for sending window, wherein K indicates that the first sending time, N indicate between the second data and the first data most
Long time delay, L indicate to send the length of window.
22. data transmission device as claimed in claim 20, which is characterized in that further include：
Judging unit after the first sending time for recording the first data, is sentenced for sending the first data in the transmission unit
Whether corresponding first business of first data of breaking is configured with low time delay transfer function：If so, the first determination unit of triggering,
Otherwise the second determination unit is triggered；
Second determination unit, for according to default fixed feedback sequential relationship, determining that the first sending time corresponding first is sent
Time；
Second transmission unit, for receiving second data when first sending time reaches.
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| PCT/CN2018/071940 WO2018130146A1 (en) | 2017-01-13 | 2018-01-09 | Data transmission method and data transmission device |
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| CN108306716B (en) | 2020-04-14 |
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