CN106656433B - Downlink data feedback method, equipment and system - Google Patents
Downlink data feedback method, equipment and system Download PDFInfo
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- CN106656433B CN106656433B CN201510741183.7A CN201510741183A CN106656433B CN 106656433 B CN106656433 B CN 106656433B CN 201510741183 A CN201510741183 A CN 201510741183A CN 106656433 B CN106656433 B CN 106656433B
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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
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
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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
- H04L1/1887—Scheduling and prioritising arrangements
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention provides a kind of downlink data feedback method, equipment and system；CRC check is carried out to each MAC PDU by UE and EEC is verified, determines the feedback kind (CRC type or EEC type) and feedback result corresponding with feedback kind of each MAC PDU；It includes the feedback kind of each MAC PDU and the feedback information of feedback result that UE is sent to base station；Base station obtains the feedback kind and feedback result of each MAC PDU according to feedback information；So that UE is capable of determining that the feedback information including CRC type and/or the corresponding feedback result of EEC type, and feedback information is sent to base station；Realize UE according to CRC check result and EEC check results come to base station carry out downlink data feedback.
Description
Technical field
The present embodiments relate to the communication technology more particularly to a kind of downlink data feedback methods, equipment and system.
Background technique
In current wireless communication system, in order under severe channel, especially high data rate or high-speed mobile ring
In border, the data communication of high reliablity, hybrid automatic repeat-request (HARQ, Hybrid Automatic Repeat are provided
Request) technology is a kind of error-control technique generallyd use.For example, base station using HARQ technology to user equipment (UE,
User Equipment) transmission data.
In existing HARQ technology, UE receives media access control (MAC, the Media Access of base station transmission
Control) when protocol Data Unit (PDU, Protocol Data Unit), using cyclic redundancy check (CRC, Cyclic
Redundancy Check) the MAC PDU received is verified, and lower line number is carried out to base station according to CRC check result
According to feedback.Specifically, returning to confirmation (ACK) to base station if CRC check passes through；If CRC check does not pass through, returned to base station
It returns non-acknowledgement (NACK).When UE returns to NACK, base station retransmits the MAC PDU to UE；When UE returns to ACK, base station is sent out to UE
Send next MAC PDU.Since CRC check is obstructed out-of-date, the position of the data of mistake can not will occur in the MAC PDU for UE
It is sent to base station, so base station needs to be retransmitted for entire MAC PDU, wastes biggish downlink bandwidth resource；Therefore,
It is currently suggested a kind of repeating method retransmitted MAC PDU and combination is retransmitted for the partial data that mistake occurs；Wherein, it sends out
It the position of the data of raw mistake can be by UE using erroneous estimation coding (EEC, Error Estimating Coding) verification
To determine.
But base station, which exists in the prior art, cannot obtain UE according under CRC check result and the acquisition of EEC check results
The problem of row data feedback.
Summary of the invention
The embodiment of the present invention provides a kind of downlink data feedback method, equipment and system, to solve base in the prior art
The problem of UE is fed back according to the downlink data that CRC check result and EEC check results obtain cannot be obtained by standing.
In a first aspect, the embodiment of the present invention provides a kind of downlink data feedback method, comprising:
User equipment (UE) receives at least one media access control MAC protocol data cell PDU that base station is sent；
The UE to each of at least one MAC PDU MAC PDU carry out cyclic redundancy check (CRC) verification and
Erroneous estimation encodes EEC verification, determines the feedback kind and feedback corresponding with the feedback kind of each MAC PDU
As a result；The feedback kind includes CRC type and EEC type；
The UE sends feedback message to the base station, and the feedback message includes the feedback of each MAC PDU
Type and feedback result.
With reference to first aspect, in the first mode in the cards of first aspect, the UE is to each described MAC
PDU carries out CRC check and EEC verification, determines the feedback kind of each MAC PDU and corresponding with the feedback kind
Feedback result, comprising:
The UE carries out CRC check to each of at least one MAC PDU MAC PDU；
If the CRC check of each MAC PDU passes through, it is determined that the feedback kind of each MAC PDU is
CRC type, feedback result are confirmation ACK, otherwise carry out EEC verification to each described MAC PDU；
If the wrong EEC packet count of each MAC PDU be greater than or equal to preset value, it is determined that it is described each
The feedback kind of MAC PDU is CRC type, feedback result is non-acknowledgement NACK, otherwise determines that each MAC PDU's is anti-
Feedback type is EEC type, feedback result for indicating the check results of each EEC grouping.
With reference to first aspect or the first mode in the cards of first aspect, second in first aspect are possible real
In existing mode, the corresponding feedback result of the EEC type is to be equal to using lengthThe mistake point that indicates of bit sequence
The serial number of group, n are EEC grouping number.
With reference to first aspect or first aspect the first to second of any mode in the cards, in first aspect
The third mode in the cards in, the format of the feedback message includes: TYPE field and F field；Wherein, the TYPE
Field indicates the feedback kind of each MAC PDU；The F field indicates the feedback result of each MAC PDU.
The third mode in the cards with reference to first aspect, in the 4th kind of mode in the cards of first aspect
In, the format of the feedback message further include: NUM field, the NUM field indicate the number of the MAC PDU.
Second aspect, the embodiment of the present invention provide a kind of downlink data feedback method, comprising:
Base station sends at least one media access control MAC protocol data cell PDU to user equipment (UE)；
The base station receives the feedback information that the UE is sent, and the feedback information includes at least one described MAC PDU
In each MAC PDU feedback kind and feedback result；The feedback kind includes cyclic redundancy check (CRC) type and mistake
Estimated coding EEC type；
The base station obtains the feedback kind and feedback result of each MAC PDU according to the feedback information.
In conjunction with second aspect, in the first mode in the cards of second aspect, the corresponding feedback of the EEC type
It as a result is to be equal to using lengthBit sequence indicate erroneous packet serial number, n be EEC grouping number.
In conjunction with the first of second aspect or second aspect mode in the cards, second in second aspect may be real
In existing mode, the format of the feedback message includes: TYPE field and F field；Wherein, the TYPE field indicates described every
The feedback kind of one MAC PDU；The F field indicates the feedback result of each MAC PDU.
In conjunction with second of mode in the cards of second aspect, in the third mode in the cards of second aspect
In, the format of the feedback message further include: NUM field, the NUM field indicate the number of the MAC PDU.
The third aspect, the embodiment of the present invention provide a kind of user equipment (UE), comprising:
Receiving module, for receiving at least one media access control MAC protocol data cell PDU of base station transmission；
Processing module, for carrying out cyclic redundancy check to each of at least one MAC PDU MAC PDU
CRC check and erroneous estimation coding EEC verification, determine each MAC PDU feedback kind and with the feedback kind
Corresponding feedback result；The feedback kind includes CRC type and EEC type；
Sending module, for sending feedback message to the base station, the feedback message includes each described MAC PDU
Feedback kind and feedback result.
In conjunction with the third aspect, in the first mode in the cards of the third aspect, the processing module is specific to use
In:
CRC check is carried out to each of at least one MAC PDU MAC PDU；
If the CRC check of each MAC PDU passes through, it is determined that the feedback kind of each MAC PDU is
CRC type, feedback result are confirmation ACK, otherwise carry out EEC verification to each described MAC PDU；
If the wrong EEC packet count of each MAC PDU be greater than or equal to preset value, it is determined that it is described each
The feedback kind of MAC PDU is CRC type, feedback result is non-acknowledgement NACK, otherwise determines that each MAC PDU's is anti-
Feedback type is EEC type, feedback result for indicating the check results of each EEC grouping.
In conjunction with the first of the third aspect or the third aspect mode in the cards, second in the third aspect may be real
In existing mode, the corresponding feedback result of the EEC type is to be equal to using lengthThe mistake point that indicates of bit sequence
The serial number of group, n are EEC grouping number.
In conjunction with the first of the third aspect or the third aspect to second of any mode in the cards, in the third aspect
The third mode in the cards in, the format of the feedback message includes: TYPE field and F field；Wherein, the TYPE
Field indicates the feedback kind of each MAC PDU；The F field indicates the feedback result of each MAC PDU.
In conjunction with the third mode in the cards of the third aspect, in the 4th kind of mode in the cards of the third aspect
In, the format of the feedback message further include: NUM field, the NUM field indicate the number of the MAC PDU.
Fourth aspect, the embodiment of the present invention provide a kind of base station, comprising:
Sending module, for sending at least one media access control MAC protocol data cell PDU to user equipment (UE)；
Receiving module, the feedback information sent for receiving the UE, the feedback information include at least one described MAC
The feedback kind and feedback result of each MAC PDU in PDU；The feedback kind include cyclic redundancy check (CRC) type and
Erroneous estimation encodes EEC type；
Processing module, for obtaining the feedback kind and feedback knot of each MAC PDU according to the feedback information
Fruit.
In conjunction with fourth aspect, in the first mode in the cards of fourth aspect, the corresponding feedback of the EEC type
It as a result is to be equal to using lengthBit sequence indicate erroneous packet serial number, n be EEC grouping number.
In conjunction with the first of fourth aspect or fourth aspect mode in the cards, second in fourth aspect may be real
In existing mode, the format of the feedback message includes: TYPE field and F field；Wherein, the TYPE field indicates described every
The feedback kind of one MAC PDU；The F field indicates the feedback result of each MAC PDU.
In conjunction with second of mode in the cards of fourth aspect, in the third mode in the cards of fourth aspect
In, the format of the feedback message further include: NUM field, the NUM field indicate the number of the MAC PDU.
5th aspect, the embodiment of the present invention provides a kind of system, comprising: the first of the third aspect or the third aspect to the
The first of four kinds of any user equipment (UE)s and fourth aspect or fourth aspect are to the third any base
It stands.
Downlink data feedback method, equipment and system provided in an embodiment of the present invention；By UE to each MAC PDU into
Row CRC check and EEC verification, determine the feedback kind (CRC type or EEC type) and and feedback kind of each MAC PDU
Corresponding feedback result；It includes the feedback kind of each MAC PDU and the feedback letter of feedback result that UE is sent to base station
Breath；Base station obtains the feedback kind and feedback result of each MAC PDU according to feedback information；So that UE is capable of determining that packet
The feedback information of CRC type and/or the corresponding feedback result of EEC type is included, and feedback information is sent to base station；Realize UE
The feedback of downlink data is carried out to base station according to CRC check result and EEC check results.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the application scenarios schematic diagram of downlink data feedback method of the present invention；
Fig. 2 is the flow chart of downlink data feedback method embodiment one of the present invention；
Fig. 3 is the flow chart of downlink data feedback method embodiment two of the present invention；
Fig. 4 is the schematic diagram of the format of feedback message of the present invention；
Fig. 5 is the CDF curve graph of EEC erroneous packet number of the present invention；
Fig. 6 is the present invention and number of error bits in the prior art and number of retransmissions relationship comparison diagram；
Fig. 7 is the structural schematic diagram of user equipment embodiment one of the present invention；
Fig. 8 is the structural schematic diagram of user equipment embodiment two of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Fig. 1 is the application scenarios schematic diagram of downlink data feedback method of the present invention；As shown in Figure 1, the application of the present embodiment
Scene may include: base station 11 and UE 12.Wherein, the UE can be mobile phone, laptop, tablet computer etc..Base station 11
Downlink transmits data using HARQ mechanism between UE 12.Currently, proposing, a kind of by MAC PDU to retransmit and be directed to generation wrong
Partial data accidentally retransmits the repeating method combined；Wherein, the position that the data of mistake occur can be verified by UE using EEC
To determine.But base station, which exists in the prior art, cannot obtain UE according under CRC check result and the acquisition of EEC check results
The problem of row data feedback.
Wherein, in EEC, MAC PDU is divided for multiple EEC grouping；When carrying out EEC verification, for each EEC points
Group is verified, and determines the check results of each EEC grouping；If verification is correct, illustrate that the data of EEC grouping are correct；
If verification failure, illustrate the EEC grouping data there are mistakes.It can be seen that the check results of EEC verification can be determined
Which EEC grouping occurs wrong (granularity is small), and the result of CRC check may only determine the MAC PDU with the presence or absence of mistake
Accidentally (granularity is big).Therefore, MAC PDU is retransmitted and retransmits the repeating method combined for the partial data that mistake occurs, it can be with
Reduce and retransmit data volume, to reduce downlink data amount.
Fig. 2 is the flow chart of downlink data feedback method embodiment one of the present invention；As shown in Fig. 2, the method for the present embodiment
May include:
Step 201, base station send at least one MAC PDU to user equipment (UE)；
For example, can be MAC PDU1 when base station sends MAC PDU to UE for the first time；It is sent out to UE for second when base station
It can be the part for needing to retransmit in MAC PDU1 and MAC PDU2 when sending MAC PDU；When base station third time sends MAC to UE
It can be the part for needing to retransmit in MAC PDU1, MAC PDU2 and MAC PDU3 when PDU；……；When base station the 9th time is to UE
It can be the part for needing to retransmit in MAC PDU2-MAC PDU8 and MAC PDU9 when sending MAC PDU.
It should be noted that being to be equal to 8 with sending times, and there are portions in each transmission by each MAC PDU here
It illustrates based on divided data error of transmission；And when sending times are 8, then it represents that needed when sending times are equal to 8
The part of repeating transmission is dropped, no longer repeating transmission (for example, MAC PDU1 in above-mentioned 9th time).
As can be seen that a HARQ process can safeguard multiple MAC PDU in the present invention.
Step 202, the UE carry out CRC check and EEC to each of at least one MAC PDU MAC PDU
Verification determines the feedback kind and feedback result corresponding with the feedback kind of each MAC PDU；The feedback sort
Type includes CRC type and EEC type；
Step 203, the UE send feedback message to the base station, and the feedback message includes each described MAC
The feedback kind and feedback result of PDU；
Step 204, the base station obtain the feedback kind of each MAC PDU and anti-according to the feedback information
Present result.
In the present embodiment, CRC check is carried out to each MAC PDU by UE and EEC is verified, determines each MAC
The feedback kind (CRC type or EEC type) of PDU and feedback result corresponding with feedback kind；It includes institute that UE is sent to base station
State the feedback kind of each MAC PDU and the feedback information of feedback result；Base station obtains each MAC according to feedback information
The feedback kind and feedback result of PDU；So that UE is capable of determining that including CRC type and/or the corresponding feedback result of EEC type
Feedback information, and feedback information is sent to base station；UE is realized according to CRC check result and EEC check results come to base
It stands and carries out the feedback of downlink data.
Fig. 3 is the flow chart of downlink data feedback method embodiment two of the present invention；As shown in figure 3, one kind of step 203 can
The implementation of choosing includes:
Step 301, the UE carry out CRC check to each of at least one MAC PDU MAC PDU；
If CRC check passes through, 302 are thened follow the steps；Otherwise, step 303 is executed.
Step 302, the UE determine that the feedback kind of each MAC PDU is CRC type, feedback result is confirmation
ACK；
It should be noted that step 302 terminates after having executed.
Step 303, the UE carry out EEC verification to each described MAC PDU；
If the wrong EEC packet count of each MAC PDU is greater than or equal to preset value, 304 are thened follow the steps；It is no
Then, step 305 is executed.
Optionally, the preset value is directly proportional to EEC grouping number n；For example, the preset value can be n/4.
It should be noted that then illustrating that mistake occurs in the MAC PDU when mistake EEC packet count is greater than or equal to preset value
Packet count it is more；At this moment, it may be considered that the MAC PDU is retransmitted, and is no longer to carry out weight for mistake EEC grouping
It passes.When wrong EEC packet count is less than preset value, then it is less to illustrate that wrong packet count occurs in the MAC PDU；It at this moment, can be with
Consider to be retransmitted for mistake EEC grouping, rather than the MAC PDU is retransmitted.
Step 304, the UE determine that the feedback kind of each MAC PDU is CRC type, feedback result is non-true
Recognize NACK；
It should be noted that step 304 terminates after having executed.
Step 305, the UE determine that the feedback kind of each MAC PDU is EEC type, feedback result for table
Show the check results of each EEC grouping.
In the present embodiment, if the CRC check by each MAC PDU passes through, it is determined that each described MAC
The feedback kind of PDU is CRC type, feedback result is confirmation ACK, otherwise carries out EEC verification to each described MAC PDU；
If the wrong EEC packet count of each MAC PDU is greater than or equal to preset value, it is determined that each MAC PDU's
Feedback kind is CRC type, feedback result is non-acknowledgement NACK, otherwise determines that the feedback kind of each MAC PDU is
EEC type, feedback result are used to indicate the check results of each EEC grouping；So that UE be capable of determining that including CRC type and/or
The feedback information of the corresponding feedback result of EEC type, and feedback information is sent to base station；UE is realized according to CRC check knot
Fruit and EEC check results to carry out the feedback of downlink data to base station.
Downlink data feedback method embodiment three
Optionally, on the basis of downlink data feedback method embodiment one of the present invention or embodiment two, the feedback disappears
The format of breath includes: TYPE field and F field；Wherein, the TYPE field indicates the feedback sort of each MAC PDU
Type；The F field indicates the feedback result of each MAC PDU.
It is further alternative, the format of the feedback message further include: NUM field, the NUM field indicate the MAC
The number of PDU.
In the following, be that 8 (namely the value of NUM field is 8) are illustrated with the number of MAC PDU, a kind of lattice of feedback message
Formula can be as shown in Figure 4 (schematic diagram of format of the Fig. 4 for feedback message of the present invention).Wherein each field parameter is explained as follows:
1) NUM field, 3 bits (bit): in current HARQ process, MAC PDU quantity which includes.Generally
The maximum retransmission of HARQ is set as 8, so at most safeguarding 8 difference MAC PDU in each HARQ process, therefore is at most needed
Transmit the check results of 8 MAC PDU.
2) TYPE field, 1~8bit: each bit represents the feedback kind of corresponding MAC PDU.The length of the TYPE field
It is specified by NUM field.That is, if feedback message need to transmit the feedback information of a MAC PDU of k (k≤8), (feedback information includes anti-
Present type and feedback result), then the value of NUM field is k, and the length of TYPE field is k, and every bit value of TYPE field represents
The feedback kind of corresponding MAC PDU.Also, TYPE field bit sequence transmitted for the first time with MAC PDU sequence consensus (for example,
1st bit of TYPE field represents the feedback kind of the MAC PDU1 in step 201, the 8th bit ride instead of walk of TYPE field
The feedback kind of MAC PDU8 in rapid 201).
Optionally, feedback kind representated by the value of every bit in TYPE field is as follows:
0:CRC type, corresponding feedback result are 1bit ACK/NACK (such as F_1 subfield in Fig. 4)；
1:EEC type, corresponding feedback result are used to indicate check results (such as the F_2 in Fig. 4 of each EEC grouping
Subfield).
3) F field: including eight subfields of F_1-F_8, each subfield indicates a feedback result.Subfield F_1 with
The feedback kind that the 1st bit in TYPE field is indicated is corresponding, the feedback sort that the 2nd bit in F_2 and TYPE field is indicated
Type is corresponding ... ..., and F_8 is corresponding with the feedback kind that the 8th bit in TYPE field is indicated.
Optionally, when subfield (such as F_1 subfield in Fig. 4) corresponding with CRC type, the length of subfield is
1bit represents CRC check when being 0 and does not pass through, and represents CRC check when being 1 and passes through.
When subfield (such as F_2 subfield in Fig. 4) corresponding with EEC type, the length of subfield can be EEC points
Group quantity bit, and every bit represents the check results of corresponding EEC grouping, and EEC verification is represented when being 0 and is passed through, was 1 epoch
Table EEC verification does not pass through.
For example, it is assumed that current EEC packet count is n, then the subfield has n bits；If third bit in n bits etc.
In 0, then it represents that the EEC verification of the 3rd EEC grouping of corresponding MAC PDU passes through, otherwise indicates if third bit is equal to 1
EEC verification does not pass through.
Optionally, the format of the feedback message further includes filling (Padding), is gathered together enough for byte.
Fig. 5 is cumulative distribution parameter (CDF, the Cumulative Distribution of EEC erroneous packet number of the present invention
Function) curve graph；Wherein, Fig. 5 is by taking EEC packet count is 40 as an example, test EEC in the next MAC PDU of simulated conditions
The mean parameter of erroneous packet quantity.As seen from Figure 5, erroneous packet number is less than the probability equal to 2 close to 95%, more than 5
Probability be lower than 2%.Therefore, it can be deduced that, if carrying out EEC feedback result in the manner described above, it may appear that more than 01 few situation.
Therefore, it is based on above-mentioned simulation result, following compression improvement can be done for the feedback result of EEC type:
If EEC number of packet is n, length value len are as follows:It then can be with using the bit sequence of one group of len long
The serial number for characterizing EEC grouping (for example, when the value of the bit sequence of length len is 1, indicates the 1st EEC grouping；Work as length
When value for the bit sequence of len is n, n-th of EEC grouping is indicated).
Therefore, a kind of feedback result of improved EEC type can be with are as follows: is equal to using lengthBit sequence table
The serial number for the erroneous packet shown, n are EEC grouping number.
It should be noted thatExpression rounds up to X；For example,Result be 2.
For example, if the bit sequence of the number of packet n=40, every 6bits long of EEC can represent the sequence of EEC grouping
Number.If it is further assumed that the serial number 4 and 11 of the EEC erroneous packet of current MAC PDU, feedback result are
000100001011.Compared to uncompressed preceding feedback result 000100000010000 ..., nearly 70% resource is saved.
Long term evolution (LTE, Long Term Evolution) defines 2 kinds of different modes for sending uplink L1/L2
Information is controlled, specifically, if UE is not previously allocated in current subframe for sending Uplink Shared Channel (UL-SCH, Uplink
Shared Channel) data ascending resource, then UE use Physical Uplink Control Channel (PUCCH, Physical Uplink
Control Channel) come send uplink L1/L2 control information；If UE is assigned in current subframe for sending UL-
The ascending resource of SCH data, then UE uses Physical Uplink Shared Channel (PUSCH, Physical Uplink Shared
Channel) information is controlled to send uplink L1/L2；And for the same UE, simultaneous transmission PUCCH is unable in a subframe
And PUSCH.
In the prior art, when UE sends uplink L1/L2 control information using PUCCH, according to UE in a sub-frame of uplink
The difference of the interior ascending control information for needing to send, the form of PUCCH are as shown in table 1；
Table 1
The HARQ information in ascending control information for needing to transmit due to UE in the prior art is ACK/NACK, and of the invention
Middle UE needs the HARQ information in the ascending control information transmitted to have variation compared with prior art；Therefore the present invention is in table 1
On the basis of, new PUCCH format is proposed, as shown in table 2；
Table 2
| PUCCH format | Modulation scheme | No.of Bits/Per Subframe | Information |
| format 4a | QPSK | (3+2*m)~(3+m*n) bits | HARQ with/without SR |
| format 4b | QPSK | 20+ { (3+2*m)~(3+m*n) } bits | CQI+HARQ |
Wherein, m represents the quantity of the MAC PDU of HARQ process maintenance, and n represents the number of the EEC grouping of a MAC PDU
Amount；HARQ represents HARQ information.
Fig. 6 is the present invention and number of error bits in the prior art and number of retransmissions relationship comparison diagram；As shown in fig. 6, adopting
On the basis of feedback message with the downlink data of the invention based on EEC+CRC, the corresponding HARQ of feedback information is taken in base station
MAC PDU (is retransmitted and is retransmitted the retransmission mechanism combined, namely new HARQ machine for the partial data that mistake occurs by retransmission mechanism
System)；Compared to the HARQ mechanism (MAC PDU is retransmitted, namely former HARQ mechanism) of the prior art, greatly reduces MAC PDU's
Number of retransmissions reduces bandwidth consumption.
Fig. 7 is the structural schematic diagram of user equipment embodiment one of the present invention；As shown in fig. 7, the user equipment of the present embodiment
It may include: receiving module 701, processing module 702 and sending module 703；Wherein, receiving module 701, for receiving base station hair
At least one the media access control MAC protocol data cell PDU sent；Processing module 702, for at least one described MAC
Each of PDU MAC PDU carries out cyclic redundancy check (CRC) checksum error estimated coding EEC verification, determines described each
The feedback kind of a MAC PDU and feedback result corresponding with the feedback kind；The feedback kind include CRC type and
EEC type；Sending module 703, for sending feedback message to the base station, the feedback message includes each described MAC
The feedback kind and feedback result of PDU.
Optionally, processing module 702 are specifically used for:
CRC check is carried out to each of at least one MAC PDU MAC PDU；
If the CRC check of each MAC PDU passes through, it is determined that the feedback kind of each MAC PDU is
CRC type, feedback result are confirmation ACK, otherwise carry out EEC verification to each described MAC PDU；
If the wrong EEC packet count of each MAC PDU be greater than or equal to preset value, it is determined that it is described each
The feedback kind of MAC PDU is CRC type, feedback result is non-acknowledgement NACK, otherwise determines that each MAC PDU's is anti-
Feedback type is EEC type, feedback result for indicating the check results of each EEC grouping.
Optionally, the corresponding feedback result of the EEC type is to be equal to using lengthBit sequence indicate mistake
The accidentally serial number of grouping, n are EEC grouping number.
Optionally, the format of the feedback message includes: TYPE field and F field；Wherein, the TYPE field indicates institute
State the feedback kind of each MAC PDU；The F field indicates the feedback result of each MAC PDU.
Optionally, the format of the feedback message further include: NUM field, the NUM field indicate the MAC PDU's
Number.
The user equipment of the present embodiment can be used for executing the technical solution of downlink data feedback method embodiment two, three
And the technical solution of one side UE of downlink data feedback method embodiment, it is similar that the realization principle and technical effect are similar, no longer superfluous herein
It states.
Base station embodiment one
The structure of the base station of the present embodiment is similar with structure described in Fig. 7, equally includes sending module, processing module and connecing
Receive module.Wherein, sending module, for sending at least one media access control MAC protocol data cell to user equipment (UE)
PDU；Receiving module, the feedback information sent for receiving the UE, the feedback information include at least one described MAC PDU
In each MAC PDU feedback kind and feedback result；The feedback kind includes cyclic redundancy check (CRC) type and mistake
Estimated coding EEC type；Processing module, for obtaining the feedback kind of each MAC PDU according to the feedback information
And feedback result.
Optionally, the corresponding feedback result of the EEC type is to be equal to using lengthBit sequence indicate mistake
The accidentally serial number of grouping, n are EEC grouping number.
Optionally, the format of the feedback message includes: TYPE field and F field；Wherein, the TYPE field indicates institute
State the feedback kind of each MAC PDU；The F field indicates the feedback result of each MAC PDU.
Optionally, the format of the feedback message further include: NUM field, the NUM field indicate the MAC PDU's
Number.
The base station of the present embodiment can be used for executing the technical solution of one base station side of downlink data feedback method embodiment,
That the realization principle and technical effect are similar is similar for it, and details are not described herein again.
The present invention also provides a kind of systems, comprising: described in UE described in user equipment embodiment one and base station embodiment one
Base station.
The base station of the present embodiment can be used for executing downlink data feedback method embodiment one, embodiment two and embodiment
Three technical solution, it is similar that the realization principle and technical effect are similar, and details are not described herein again.
Fig. 8 is the structural schematic diagram of user equipment embodiment two of the present invention；As shown in figure 8, the user equipment of the present embodiment
It may include: receiver 801, processor 802 and transmitter 803；Wherein, receiver 801 are sent at least for receiving base station
One media access control MAC protocol data cell PDU；Processor 802, for every at least one described MAC PDU
One MAC PDU carries out cyclic redundancy check (CRC) checksum error estimated coding EEC verification, determines each described MAC PDU
Feedback kind and feedback result corresponding with the feedback kind；The feedback kind includes CRC type and EEC type；Hair
Device 803 is sent, for sending feedback message to the base station, the feedback message includes the feedback sort of each MAC PDU
Type and feedback result.
Optionally, processor 802 are specifically used for:
CRC check is carried out to each of at least one MAC PDU MAC PDU；
If the CRC check of each MAC PDU passes through, it is determined that the feedback kind of each MAC PDU is
CRC type, feedback result are confirmation ACK, otherwise carry out EEC verification to each described MAC PDU；
If the wrong EEC packet count of each MAC PDU be greater than or equal to preset value, it is determined that it is described each
The feedback kind of MAC PDU is CRC type, feedback result is non-acknowledgement NACK, otherwise determines that each MAC PDU's is anti-
Feedback type is EEC type, feedback result for indicating the check results of each EEC grouping.
Optionally, the corresponding feedback result of the EEC type is to be equal to using lengthBit sequence indicate mistake
The accidentally serial number of grouping, n are EEC grouping number.
Optionally, the format of the feedback message includes: TYPE field and F field；Wherein, the TYPE field indicates institute
State the feedback kind of each MAC PDU；The F field indicates the feedback result of each MAC PDU.
Optionally, the format of the feedback message further include: NUM field, the NUM field indicate the MAC PDU's
Number.
The user equipment of the present embodiment can be used for executing the technical solution of downlink data feedback method embodiment two, three
And the technical solution of one side UE of downlink data feedback method embodiment, it is similar that the realization principle and technical effect are similar, no longer superfluous herein
It states.
Base station embodiment two
The structure of base station is similar with structure shown in Fig. 8 in the present embodiment, equally includes transmitter, processor and reception
Device；Wherein, transmitter, for sending at least one media access control MAC protocol data cell PDU to user equipment (UE)；It connects
Device is received, the feedback information sent for receiving the UE, the feedback information includes each at least one described MAC PDU
The feedback kind and feedback result of MAC PDU；The feedback kind includes cyclic redundancy check (CRC) type and erroneous estimation coding
EEC type；Processor, for obtaining the feedback kind and feedback knot of each MAC PDU according to the feedback information
Fruit.
Optionally, the corresponding feedback result of the EEC type is to be equal to using lengthBit sequence indicate mistake
The accidentally serial number of grouping, n are EEC grouping number.
Optionally, the format of the feedback message includes: TYPE field and F field；Wherein, the TYPE field indicates institute
State the feedback kind of each MAC PDU；The F field indicates the feedback result of each MAC PDU.
Optionally, the format of the feedback message further include: NUM field, the NUM field indicate the MAC PDU's
Number.
The base station of the present embodiment can be used for executing the technical solution of one base station side of downlink data feedback method embodiment,
That the realization principle and technical effect are similar is similar for it, and details are not described herein again.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above-mentioned each method embodiment can lead to
The relevant hardware of program instruction is crossed to complete.Program above-mentioned can be stored in a computer readable storage medium.The journey
When being executed, execution includes the steps that above-mentioned each method embodiment to sequence；And storage medium above-mentioned include: ROM, RAM, magnetic disk or
The various media that can store program code such as person's CD.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (17)
1. a kind of downlink data feedback method characterized by comprising
User equipment (UE) receives at least one media access control MAC protocol data cell PDU that base station is sent；
The UE carries out cyclic redundancy check (CRC) checksum error to each of at least one MAC PDU MAC PDU
Estimated coding EEC verification determines the feedback kind and feedback corresponding with feedback kind knot of each MAC PDU
Fruit；The feedback kind includes CRC type and EEC type；
The UE sends feedback message to the base station, and the feedback message includes the feedback kind of each MAC PDU
And feedback result；
The UE carries out CRC check to each described MAC PDU and EEC is verified, and determines the feedback of each MAC PDU
Type and feedback result corresponding with the feedback kind, comprising:
The UE carries out CRC check to each of at least one MAC PDU MAC PDU；
If the CRC check of each MAC PDU passes through, it is determined that the feedback kind of each MAC PDU is CRC class
Type, feedback result are confirmation ACK, otherwise carry out EEC verification to each described MAC PDU；
If the wrong EEC packet count of each MAC PDU is greater than or equal to preset value, it is determined that each described MAC
The feedback kind of PDU is CRC type, feedback result is non-acknowledgement NACK, otherwise determines the feedback sort of each MAC PDU
Type is EEC type, feedback result for indicating the check results of each EEC grouping.
2. the method according to claim 1, wherein the corresponding feedback result of the EEC type is to use length
It is equal toBit sequence indicate erroneous packet serial number, n be EEC grouping number.
3. method according to claim 1 or 2, which is characterized in that the format of the feedback message include: TYPE field and
F field；Wherein, the TYPE field indicates the feedback kind of each MAC PDU；The F field indicates described each
The feedback result of a MAC PDU.
4. according to the method described in claim 3, it is characterized in that, the format of the feedback message further include: NUM field, institute
Stating NUM field indicates the number of the MAC PDU.
5. a kind of downlink data feedback method characterized by comprising
Base station sends at least one media access control MAC protocol data cell PDU to user equipment (UE)；
The base station receives the feedback information that the UE is sent, and the feedback information includes every at least one described MAC PDU
The feedback kind and feedback result of one MAC PDU；The feedback kind includes cyclic redundancy check (CRC) type and erroneous estimation
Encode EEC type；
The base station obtains the feedback kind and feedback result of each MAC PDU according to the feedback information；
The feedback kind and feedback result of each MAC PDU is one of following at least one described MAC PDU: feedback
Type is CRC type and feedback result is confirmation ACK, feedback kind is CRC type and feedback result is non-acknowledgement NACK, feedback
Type is the check results that EEC type and feedback result are used to indicate each EEC grouping；
The feedback kind is CRC type and feedback result is confirmation ACK, indicates the UE to each MAC PDU's
CRC check passes through；
The feedback kind is CRC type and feedback result is non-acknowledgement NACK, indicates the UE to each described MAC PDU
CRC check do not pass through, and EEC check results are mistake EEC packet count more than or equal to preset value；
The feedback kind is the check results that EEC type and feedback result are used to indicate each EEC grouping, indicates the UE to institute
The CRC check for stating each MAC PDU does not pass through, and EEC check results are that mistake EEC packet count is less than preset value.
6. according to the method described in claim 5, it is characterized in that, the corresponding feedback result of the EEC type is to use length
It is equal toBit sequence indicate erroneous packet serial number, n be EEC grouping number.
7. method according to claim 5 or 6, which is characterized in that the format of the feedback message include: TYPE field and
F field；Wherein, the TYPE field indicates the feedback kind of each MAC PDU；The F field indicates described each
The feedback result of a MAC PDU.
8. the method according to the description of claim 7 is characterized in that the format of the feedback message further include: NUM field, institute
Stating NUM field indicates the number of the MAC PDU.
9. a kind of user equipment (UE) characterized by comprising
Receiving module, for receiving at least one media access control MAC protocol data cell PDU of base station transmission；
Processing module, for carrying out cyclic redundancy check (CRC) school to each of at least one MAC PDU MAC PDU
Test with erroneous estimation coding EEC verification, determine the feedback kind of each MAC PDU and corresponding with the feedback kind
Feedback result；The feedback kind includes CRC type and EEC type；
Sending module, for sending feedback message to the base station, the feedback message includes the anti-of each MAC PDU
Present type and feedback result；
The processing module, is specifically used for:
CRC check is carried out to each of at least one MAC PDU MAC PDU；
If the CRC check of each MAC PDU passes through, it is determined that the feedback kind of each MAC PDU is CRC class
Type, feedback result are confirmation ACK, otherwise carry out EEC verification to each described MAC PDU；
If the wrong EEC packet count of each MAC PDU is greater than or equal to preset value, it is determined that each described MAC
The feedback kind of PDU is CRC type, feedback result is non-acknowledgement NACK, otherwise determines the feedback sort of each MAC PDU
Type is EEC type, feedback result for indicating the check results of each EEC grouping.
10. UE according to claim 9, which is characterized in that the corresponding feedback result of the EEC type is to use length etc.
InBit sequence indicate erroneous packet serial number, n be EEC grouping number.
11. UE according to claim 9 or 10, which is characterized in that the format of the feedback message include: TYPE field and
F field；Wherein, the TYPE field indicates the feedback kind of each MAC PDU；The F field indicates described each
The feedback result of a MAC PDU.
12. UE according to claim 11, which is characterized in that the format of the feedback message further include: NUM field, institute
Stating NUM field indicates the number of the MAC PDU.
13. a kind of base station characterized by comprising
Sending module, for sending at least one media access control MAC protocol data cell PDU to user equipment (UE)；
Receiving module, the feedback information sent for receiving the UE, the feedback information include at least one described MAC PDU
In each MAC PDU feedback kind and feedback result；The feedback kind includes cyclic redundancy check (CRC) type and mistake
Estimated coding EEC type；
Processing module, for obtaining the feedback kind and feedback result of each MAC PDU according to the feedback information；
The feedback kind and feedback result of each MAC PDU is one of following at least one described MAC PDU: feedback
Type is CRC type and feedback result is confirmation ACK, feedback kind is CRC type and feedback result is non-acknowledgement NACK, feedback
Type is the check results that EEC type and feedback result are used to indicate each EEC grouping；
The feedback kind is CRC type and feedback result is that confirmation ACK indicates the UE to each described MAC PDU
CRC check passes through；
The feedback kind is CRC type and feedback result is that non-acknowledgement NACK indicates the UE to each described MAC PDU
CRC check do not pass through, and EEC check results are mistake EEC packet count more than or equal to preset value；
The feedback kind is the check results that EEC type and feedback result are used to indicate each EEC grouping, indicates the UE to institute
The CRC check for stating each MAC PDU does not pass through, and EEC check results are that mistake EEC packet count is less than preset value.
14. base station according to claim 13, which is characterized in that the corresponding feedback result of the EEC type is using length
Degree is equal toBit sequence indicate erroneous packet serial number, n be EEC grouping number.
15. base station described in 3 or 14 according to claim 1, which is characterized in that the format of the feedback message includes: TYPE word
Section and F field；Wherein, the TYPE field indicates the feedback kind of each MAC PDU；Described in the F field expression
The feedback result of each MAC PDU.
16. base station according to claim 15, which is characterized in that the format of the feedback message further include: NUM field,
The NUM field indicates the number of the MAC PDU.
17. a kind of communication system characterized by comprising the described in any item user equipment (UE)s of claim 9-12 and right
It is required that the described in any item base stations 13-16.
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| CN201510741183.7A CN106656433B (en) | 2015-11-04 | 2015-11-04 | Downlink data feedback method, equipment and system |
| PCT/CN2016/104207 WO2017076272A1 (en) | 2015-11-04 | 2016-11-01 | Downlink data feedback method, equipment, and system |
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|---|---|---|---|---|
| CN101699780A (en) * | 2009-10-30 | 2010-04-28 | 上海华为技术有限公司 | Data transmission method, user equipment, base station and data transmission system |
| CN101990242A (en) * | 2009-07-31 | 2011-03-23 | 夏普株式会社 | Adaptive retransmission method and user equipment in frequency spectrum polymerization system |
| CN102595624A (en) * | 2011-01-17 | 2012-07-18 | 华为技术有限公司 | Scheduling method based on group, UE and base station |
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| KR101531503B1 (en) * | 2007-09-10 | 2015-06-26 | 엘지전자 주식회사 | Signal transmission method using multiple HARQ |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101990242A (en) * | 2009-07-31 | 2011-03-23 | 夏普株式会社 | Adaptive retransmission method and user equipment in frequency spectrum polymerization system |
| CN101699780A (en) * | 2009-10-30 | 2010-04-28 | 上海华为技术有限公司 | Data transmission method, user equipment, base station and data transmission system |
| CN102595624A (en) * | 2011-01-17 | 2012-07-18 | 华为技术有限公司 | Scheduling method based on group, UE and base station |
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