CN106656433A - Downlink data feedback method, equipment and system thereof - Google Patents
Downlink data feedback method, equipment and system thereof Download PDFInfo
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- CN106656433A CN106656433A CN201510741183.7A CN201510741183A CN106656433A CN 106656433 A CN106656433 A CN 106656433A CN 201510741183 A CN201510741183 A CN 201510741183A CN 106656433 A CN106656433 A CN 106656433A
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- mac pdu
- eec
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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]
-
- 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
-
- 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
Abstract
The invention provides a downlink data feedback method, equipment and a system thereof. The method is characterized in that UE carries out CRC verification and EEC verification on each MAC PDU and determines a feedback type (a CRC type or an EEC type) of each MAC PDU and a feedback result corresponding to the feedback type; the UE sends feedback information containing the feedback type of each MAC PDU and the feedback result to a base station; and the base station acquires the feedback type of each MAC PDU and the feedback result according to the feedback information so that the UE can determines the feedback information containing the feedback result corresponding to the CRC type and/or the EEC type and sends the feedback information to the base station. The UE can carry out downlink data feedback on the base station according to a CRC verification result and an EEC verification result.
Description
Technical field
The present embodiments relate to the communication technology, more particularly to a kind of downlink data feedback method, equipment and
System.
Background technology
In current wireless communication system, in order under severe channel, especially high data rate or height
In fast mobile environment, there is provided the high data communication of reliability, hybrid automatic repeat-request (HARQ, Hybrid
Automatic Repeat Request) technology is a kind of error-control technique for generally adopting.For example, base
Stand using HARQ technologies to user equipment (UE, User Equipment) transmission data.
In existing HARQ technologies, UE receives medium education (MAC, the Media of base station transmission
Access Control) protocol Data Unit (PDU, Protocol Data Unit) when, using cyclic redundancy
The verification MAC PDU of (CRC, Cyclic Redundancy Check) to receiving are verified, and
Downlink data feedback is carried out to base station according to CRC check result.Specifically, if CRC check passes through,
Then return to base station and confirm (ACK)；If CRC check does not pass through, to base station non-acknowledgement is returned
(NACK).When UE returns NACK, base station to UE retransmits the MAC PDU；When UE is returned
When returning ACK, base station to UE sends next one MAC PDU.Due to CRC check it is obstructed out-of-date,
UE can not send the position of the data made a mistake in the MAC PDU to base station, so base station needs
To be retransmitted for whole MAC PDU, be wasted larger downlink bandwidth resource；Therefore, at present
Propose and a kind of MAC PDU are retransmitted and the re-transmission side for combining is retransmitted for the partial data that makes a mistake
Method；Wherein, the position of the data for making a mistake can by UE using wrong estimated coding (EEC,
Error Estimating Coding) verify to determine.
But, there is base station in prior art can not obtain UE according to CRC check result and EEC schools
Test the problem of the downlink data feedback of result acquisition.
The content of the invention
The embodiment of the present invention provides a kind of downlink data feedback method, equipment and system, existing to solve
Base station can not obtain the lower line number that UE is obtained according to CRC check result and EEC check results in technology
According to the problem of feedback.
In a first aspect, the embodiment of the present invention provides a kind of downlink data feedback method, including：
User equipment (UE) receives at least one media access control MAC protocol data cell that base station sends
PDU；
The UE is circulated superfluous to each the MAC PDU at least one MAC PDU
Remaining check (CRC) checksum error estimated coding EEC verifications, it is determined that each MAC PDU
Feedback kind and feedback result corresponding with the feedback kind；The feedback kind include CRC types and
EEC types；
The UE to the base station sends feedback message, and the feedback message includes described each MAC
The feedback kind and feedback result of PDU.
With reference in a first aspect, in the first mode in the cards of first aspect, the UE is to institute
Stating each MAC PDU carries out CRC check and EEC verifications, it is determined that described each MAC PDU
Feedback kind and feedback result corresponding with the feedback kind, including：
The UE carries out CRC schools to each the MAC PDU at least one MAC PDU
Test；
If the CRC check of each MAC PDU passes through, it is determined that described each MAC PDU
Feedback kind be CRC types, feedback result for confirm ACK, otherwise to described each MAC PDU
Carry out EEC verifications；
If the wrong EEC packet counts of each MAC PDU are more than or equal to preset value, it is determined that
The feedback kind of each MAC PDU is CRC types, feedback result is non-acknowledgement NACK,
The feedback kind for otherwise determining each MAC PDU is EEC types, feedback result for representing
The check results of each EEC packets.
With reference to the first mode in the cards of first aspect or first aspect, the second of first aspect
In mode kind in the cards, the corresponding feedback result of the EEC types is to be equal to using length's
The sequence number of the erroneous packet that bit sequence is represented, n is EEC grouping numbers.
With reference to first aspect or first aspect the first to second any one mode in the cards,
In the third mode in the cards of first aspect, the form of the feedback message includes：TYPE words
Section and F fields；Wherein, the TYPE field represents the feedback kind of each MAC PDU；
The F fields represent the feedback result of each MAC PDU.
With reference to the third mode in the cards of first aspect, the 4th kind in first aspect may be realized
Mode in, the form of the feedback message also includes：NUM fields, the NUM fields represent institute
State the number of MAC PDU.
Second aspect, the embodiment of the present invention provides a kind of downlink data feedback method, including：
Base station to user equipment (UE) sends at least one media access control MAC protocol data cell
PDU；
The base station receives the feedback information that the UE sends, and the feedback information includes described at least one
The feedback kind and feedback result of each MAC PDU in individual MAC PDU；The feedback kind bag
Include cyclic redundancy check (CRC) type and wrong estimated coding EEC types；
The base station according to the feedback information, obtain each MAC PDU feedback kind and
Feedback result.
With reference to second aspect, in the first mode in the cards of second aspect, the EEC types
Corresponding feedback result is to be equal to using lengthThe sequence number of erroneous packet that represents of bit sequence, n
For EEC grouping numbers.
With reference to the first mode in the cards of second aspect or second aspect, the second of second aspect
In planting mode in the cards, the form of the feedback message includes：TYPE field and F fields；Its
In, the TYPE field represents the feedback kind of each MAC PDU；The F field lists
Show the feedback result of each MAC PDU.
With reference to second mode in the cards of second aspect, the third in second aspect may be realized
Mode in, the form of the feedback message also includes：NUM fields, the NUM fields represent institute
State the number of MAC PDU.
The third aspect, the embodiment of the present invention provides a kind of user equipment (UE), including：
Receiver module, for receiving at least one media access control MAC protocol data of base station transmission
Unit PDU；
Processing module, for carrying out to each the MAC PDU at least one MAC PDU
Cyclic redundancy check (CRC) checksum error estimated coding EEC is verified, it is determined that described each MAC
The feedback kind of PDU and feedback result corresponding with the feedback kind；The feedback kind includes CRC
Type and EEC types；
Sending module, for sending feedback message to the base station, the feedback message includes described each
The feedback kind and feedback result of individual MAC PDU.
With reference to the third aspect, in the first mode in the cards of the third aspect, the processing module,
Specifically for：
CRC check is carried out to each the MAC PDU at least one MAC PDU；
If the CRC check of each MAC PDU passes through, it is determined that described each MAC PDU
Feedback kind be CRC types, feedback result for confirm ACK, otherwise to described each MAC PDU
Carry out EEC verifications；
If the wrong EEC packet counts of each MAC PDU are more than or equal to preset value, it is determined that
The feedback kind of each MAC PDU is CRC types, feedback result is non-acknowledgement NACK,
The feedback kind for otherwise determining each MAC PDU is EEC types, feedback result for representing
The check results of each EEC packets.
With reference to the first mode in the cards of the third aspect or the third aspect, the second of the third aspect
In mode kind in the cards, the corresponding feedback result of the EEC types is to be equal to using length's
The sequence number of the erroneous packet that bit sequence is represented, n is EEC grouping numbers.
With reference to the third aspect or the third aspect the first to second any one mode in the cards,
In the third mode in the cards of the third aspect, the form of the feedback message includes：TYPE words
Section and F fields；Wherein, the TYPE field represents the feedback kind of each MAC PDU；
The F fields represent the feedback result of each MAC PDU.
With reference to the third mode in the cards of the third aspect, the 4th kind in the third aspect may be realized
Mode in, the form of the feedback message also includes：NUM fields, the NUM fields represent institute
State the number of MAC PDU.
Fourth aspect, the embodiment of the present invention provides a kind of base station, including：
Sending module, for sending at least one media access control MAC protocol number to user equipment (UE)
According to unit PDU；
Receiver module, for receiving the feedback information that the UE sends, the feedback information includes described
The feedback kind and feedback result of each MAC PDU at least one MAC PDU；The feedback
Type includes cyclic redundancy check (CRC) type and wrong estimated coding EEC types；
Processing module, for according to the feedback information, obtaining the feedback of each MAC PDU
Type and feedback result.
With reference to fourth aspect, in the first mode in the cards of fourth aspect, the EEC types
Corresponding feedback result is to be equal to using lengthThe sequence number of erroneous packet that represents of bit sequence, n
For EEC grouping numbers.
With reference to the first mode in the cards of fourth aspect or fourth aspect, the second of fourth aspect
In planting mode in the cards, the form of the feedback message includes：TYPE field and F fields；Its
In, the TYPE field represents the feedback kind of each MAC PDU；The F field lists
Show the feedback result of each MAC PDU.
With reference to second mode in the cards of fourth aspect, the third in fourth aspect may be realized
Mode in, the form of the feedback message also includes：NUM fields, the NUM fields represent institute
State the number of MAC PDU.
5th aspect, the embodiment of the present invention provides a kind of system, including：The third aspect or the third aspect
The first to the 4th kind of user equipment (UE) and fourth aspect or fourth aspect described in any one the first
Base station to the third described in any one.
Downlink data feedback method provided in an embodiment of the present invention, equipment and system；By UE to each
Individual MAC PDU carry out CRC check and EEC verifications, determine the feedback sort of each MAC PDU
Type (CRC types or EEC types) and feedback result corresponding with feedback kind；UE to base station sends
The feedback information of feedback kind and feedback result including each MAC PDU；Base station is according to anti-
Feedforward information, obtains the feedback kind and feedback result of each MAC PDU；So that UE can determine
Go out the feedback information including CRC types and/or the corresponding feedback result of EEC types, and by feedback information
Send to base station；UE is realized according to CRC check result and EEC check results to carry out to base station
The feedback of downlink data.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to reality
Apply the accompanying drawing to be used needed for example or description of the prior art to be briefly described, it should be apparent that, under
Accompanying drawing in the description of face is some embodiments of the present invention, for those of ordinary skill in the art,
On the premise of not paying creative labor, can be with according to these other accompanying drawings of accompanying drawings acquisition.
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 form of feedback message of the present invention；
Fig. 5 is the CDF curve maps of EEC erroneous packets number of the present invention；
Fig. 6 is the present invention and error bit number in prior art and number of retransmissions relation comparison diagram；
Fig. 7 is the structural representation of user equipment embodiment one of the present invention；
Fig. 8 is the structural representation of user equipment embodiment two of the present invention.
Specific embodiment
To make purpose, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with this
Accompanying drawing in bright embodiment, is clearly and completely described to the technical scheme in the embodiment of the present invention,
Obviously, described embodiment is a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained under the premise of creative work is not made
The every other embodiment for obtaining, belongs to the scope of protection of the invention.
Fig. 1 is the application scenarios schematic diagram of downlink data feedback method of the present invention；As shown in figure 1, this
The application scenarios of embodiment can include：Base station 11 and UE 12.Wherein, the UE can be hand
Machine, notebook computer, panel computer etc..Descending employing HARQ machines between base station 11 and UE 12
Transmission data processed.At present, it is proposed that a kind of to retransmit MAC PDU and part number for making a mistake
According to the repeating method for retransmitting combination；Wherein, the position of the data for making a mistake can adopt EEC by UE
Verify to determine.But, exist in prior art base station can not obtain UE according to CRC check result and
The problem of the downlink data feedback that EEC check results are obtained.
Wherein, it is multiple EEC packets by MAC PDU point in EEC；Carrying out EEC verifications
When, verified for each EEC packet, determine the check results of each EEC packet；If
Verification is correct, then illustrate that the data of the EEC packets are correct；If verification failure, illustrates the EEC point
There is mistake in the data of group.It can be seen which EEC is the check results of EEC verifications can determine that
There is wrong (granularity is little) in packet, and the result of CRC check may only determine that the MAC PDU are
It is no to exist wrong (granularity is big).Therefore, MAC PDU are retransmitted and part number for making a mistake
According to the repeating method for retransmitting combination, re-transmission data volume can be reduced, so as 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 this reality
Applying the method for example can 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；When
Can be the part for needing to retransmit in MAC PDU1 when base station sends MAC PDU to UE for the second time
And MAC PDU2；When base station third time to UE send MAC PDU when, can for MAC PDU1,
Part and the MAC PDU3 for retransmitting is needed in MAC PDU2；……；When base station the 9th time is sent out to UE
Can be part and the MAC for needing to retransmit in MAC PDU2-MAC PDU8 when sending MAC PDU
PDU9。
It should be noted that be here to be equal to 8 with sending times, and each MAC PDU is being passed every time
All exist when defeated and illustrated based on partial data error of transmission；And when sending times are 8, then
Represent and need that the part retransmitted is dropped when sending times are equal to 8, no longer retransmit (for example, above-mentioned the
MAC PDU1 in nine times).
As can be seen that a HARQ process can safeguard multiple MAC PDU in the present invention.
Step 202, the UE enter to each the MAC PDU at least one MAC PDU
Row CRC check and EEC are verified, it is determined that the feedback kind of each MAC PDU and with it is described
The corresponding feedback result of feedback kind；The feedback kind includes CRC types and EEC types；
Step 203, the UE to the base station sends feedback message, and the feedback message includes described every
The feedback kind and feedback result of one MAC PDU；
Step 204, the base station obtain each MAC PDU's according to the feedback information
Feedback kind and feedback result.
In the present embodiment, CRC check and EEC verifications are carried out to each MAC PDU by UE,
Determine each MAC PDU feedback kind (CRC types or EEC types) and with feedback kind pair
The feedback result answered；UE sends the feedback kind and feedback for including each MAC PDU to base station
As a result feedback information；Base station according to feedback information, obtain each MAC PDU feedback kind and
Feedback result；So that UE is capable of determining that feedback knot corresponding including CRC types and/or EEC types
The feedback information of fruit, and feedback information is sent to base station；UE is realized according to CRC check result and
EEC check results are carrying out the feedback of downlink data to base station.
Fig. 3 is the flow chart of downlink data feedback method embodiment two of the present invention；As shown in figure 3, step
203 a kind of optional implementation includes：
Step 301, the UE enter to each the MAC PDU at least one MAC PDU
Row CRC check；
If CRC check passes through, execution step 302；Otherwise, execution step 303.
Step 302, the UE determine the feedback kind of each MAC PDU be CRC types,
Feedback result is confirmation ACK；
It should be noted that step 302 terminates after having performed.
Step 303, the UE carry out EEC verifications to described each MAC PDU；
If the wrong EEC packet counts of each MAC PDU are more than or equal to preset value, perform
Step 304；Otherwise, execution step 305.
Optionally, the preset value is directly proportional to EEC grouping number n；For example, the preset value can be with
For n/4.
It should be noted that when mistake EEC packet counts are more than or equal to preset value, then illustrating the MAC
The packet count that mistake occurs in PDU is more；At this moment, it may be considered that the MAC PDU are retransmitted, and
No longer it is to be retransmitted for mistake EEC packets.When wrong EEC packet counts are less than preset value, then
Illustrate that wrong packet count occur in the MAC PDU less；At this moment, it may be considered that for wrong EEC point
Group is retransmitted, rather than the MAC PDU are retransmitted.
Step 304, the UE determine the feedback kind of each MAC PDU be CRC types,
Feedback result is non-acknowledgement NACK；
It should be noted that step 304 terminates after having performed.
Step 305, the UE determine the feedback kind of each MAC PDU be EEC types,
Feedback result is used to represent the check results of each EEC packets.
In the present embodiment, if the CRC check by each MAC PDU passes through, it is determined that institute
The feedback kind for stating each MAC PDU is CRC types, feedback result is confirmation ACK, otherwise
EEC verifications are carried out to described each MAC PDU；If the mistake of each MAC PDU
EEC packet counts are more than or equal to preset value, it is determined that the feedback kind of each MAC PDU is
CRC types, feedback result are non-acknowledgement NACK, otherwise determine that each MAC PDU's is anti-
Feedback type is EEC types, feedback result for representing the check results that each EEC is grouped；Enable UE
The feedback information including CRC types and/or the corresponding feedback result of EEC types is enough determined, and will be anti-
Feedforward information is sent to base station；UE is realized according to CRC check result and EEC check results come to base
Station carries out the feedback of downlink data.
Downlink data feedback method embodiment three
Optionally, on the basis of downlink data feedback method embodiment one of the present invention or embodiment two, institute
Stating the form of feedback message includes：TYPE field and F fields；Wherein, the TYPE field is represented
The feedback kind of each MAC PDU；The F fields represent described each MAC PDU
Feedback result.
Further alternative, the form of the feedback message also includes：NUM fields, the NUM words
Segment table shows the number of the MAC PDU.
Below, illustrated by 8 (namely the value of NUM fields is for 8) of the number of MAC PDU,
A kind of form of feedback message can as shown in Figure 4 (Fig. 4 be feedback message of the present invention form signal
Figure).Wherein each field parameter is explained as follows：
1) NUM fields, 3 bits (bit)：In current HARQ process, the feedback message is included
MAC PDU quantity.Typically the maximum retransmission of HARQ is set as 8, so each HARQ
At most safeguard 8 difference MAC PDU in process, therefore need at most transmit 8 MAC PDU's
Check results.
2) TYPE field, 1～8bit：Each bit represents the feedback kind of correspondence MAC PDU.
The length of the TYPE field is specified by NUM fields.That is, if need to transmit k (k≤8) individual for feedback message
The feedback information (feedback information include feedback kind and feedback result) of MAC PDU, then NUM
The value of field is k, and the length of TYPE field is k, and every bit values of TYPE field represent correspondence
The feedback kind of MAC PDU.Also, the bit orders of TYPE field are passed first with MAC PDU
(for example, the 1st bit of TYPE field represents the MAC PDU1 in step 201 to defeated sequence consensus
Feedback kind, the 8th bit of TYPE field represent the anti-of the MAC PDU8 in step 201
Feedback type).
Optionally, the feedback kind representated by the value of the every bit in TYPE field is as follows：
0：CRC types, its corresponding feedback result is 1bit ACK/NACK (such as in Fig. 4
F_1 son fields)；
1：EEC types, its corresponding feedback result is used to represent the check results (example of each EEC packets
Such as the F_2 son fields in Fig. 4).
3) F fields：Including eight son fields of F_1-F_8, each son field represents a feedback result.
The feedback kind that son field F_1 is represented with the 1st bit in TYPE field is corresponding, F_2 and TYPE
The feedback kind correspondence ... ... that the 2nd bit in field is represented, in F_8 and TYPE field
The feedback kind correspondence that 8th bit is represented.
Optionally, when son field (such as the F_1 son fields in Fig. 4) corresponding with CRC types,
The length of son field is 1bit, is that 0 interval scale CRC check does not pass through, and is 1 interval scale CRC schools
Test and pass through.
When son field (such as the F_2 son fields in Fig. 4) corresponding with EEC types, the length of son field
Degree can be EEC number of packet bit, and every bit represents the verification knot of correspondence one EEC packets
Really, it is that 0 interval scale EEC verifications pass through, is that 1 interval scale EEC verifications do not pass through.
For example, it is assumed that current EEC packet counts are n, then the son field has n bits；If in n bits
3rd bit is equal to 0, then it represents that the EEC verifications of the 3rd EEC packets of correspondence MAC PDU
Pass through, otherwise represent that EEC verifications do not pass through if the 3rd bit is equal to 1.
Optionally, the form of the feedback message also includes filling (Padding), gathers together enough for byte.
Fig. 5 is cumulative distribution parameter (CDF, the Cumulative of EEC erroneous packets number of the present invention
Distribution Function) curve map；Wherein, Fig. 5 is tested and existed so that EEC packet counts are for 40 as an example
The mean parameter of EEC erroneous packet quantity in simulated conditions next one MAC PDU.Can be seen by Fig. 5
Go out, erroneous packet number is less than 2% less than the probability close 95% for being equal to 2, the probability more than 5.Therefore,
Can draw, if carrying out EEC feedback results in the manner described above, it may appear that more than 01 few situation.
Therefore, based on above-mentioned simulation result, following compression improvement can be done for the feedback result of EEC types：
If EEC number of packet is n, length value len is：Then using the ratio of one group of len length
Special sequence can characterize the sequence number of EEC packets (for example, when the value of the bit sequences of length len is 1
When, represent the 1st EEC packet；When length is n for the value of the bit sequences of len, n-th is represented
Individual EEC packets).
Therefore, a kind of feedback result of improved EEC types can be：It is equal to using length's
The sequence number of the erroneous packet that bit sequence is represented, n is EEC grouping numbers.
It should be noted thatExpression rounds up to X；For example,Result be 2.
For example, if the number of packet n=40 of EEC, one can be represented per the bit sequence of 6bits length
The sequence number of EEC packets.If it is further assumed that the serial number 4 of the EEC erroneous packets of current MAC PDU
With 11, then feedback result is 000100001011.Compared to uncompressed front feedback result
000100000010000 ..., save nearly 70% resource.
Long Term Evolution (LTE, Long Term Evolution) defines 2 kinds of different modes for sending
Up L1/L2 control information, specifically, if UE is not previously allocated for transmission in present sub-frame
The ascending resource of row shared channel (UL-SCH, Uplink Shared Channel) data, then UE make
It is up to send with Physical Uplink Control Channel (PUCCH, Physical Uplink Control Channel)
L1/L2 control information；If UE is assigned for sending the up of UL-SCH data in present sub-frame
Resource, then UE use Physical Uplink Shared Channel (PUSCH, Physical Uplink Shared Channel)
To send up L1/L2 control information；And for same UE, in a sub- frame in simultaneous transmission is unable to
PUCCH and PUSCH.
In prior art, when UE sends up L1/L2 control information using PUCCH, according to UE
The difference of the ascending control information of transmission, the form such as table 1 of PUCCH are needed in a sub-frame of uplink
It is shown；
Table 1
Because the HARQ information in the ascending control information of UE needs transmission in prior art is
ACK/NACK, and in the present invention UE need HARQ information in the ascending control information of transmission with it is existing
There is technology to compare change；Therefore the present invention is on the basis of table 1, it is proposed that new PUCCH format,
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 processes maintenance, and n represents a MAC PDU
EEC packet quantity；HARQ represents HARQ information.
Fig. 6 is the present invention and error bit number in prior art and number of retransmissions relation comparison diagram；Such as Fig. 6
It is shown, on the basis of the feedback message based on the downlink data of EEC+CRC using the present invention, base
The corresponding HARQ retransmission mechanism of feedback information is taken (to retransmit MAC PDU and for making a mistake in station
Partial data retransmit the retransmission mechanism for combining, namely new HARQ mechanism)；With the HARQ of prior art
Mechanism (MAC PDU are retransmitted, namely former HARQ mechanism) compare, greatly reduce MAC PDU
Number of retransmissions, reduce bandwidth consumption.
Fig. 7 is the structural representation of user equipment embodiment one of the present invention；As shown in fig. 7, the present embodiment
User equipment can include：Receiver module 701, processing module 702 and sending module 703；Wherein,
Receiver module 701, for receiving at least one media access control MAC protocol data sheet of base station transmission
First PDU；Processing module 702, for each the MAC PDU at least one MAC PDU
Be circulated redundancy check CRC check and wrong estimated coding EEC verifications, it is determined that it is described each
The feedback kind of MAC PDU and feedback result corresponding with the feedback kind；The feedback kind bag
Include CRC types and EEC types；Sending module 703, for sending feedback message, institute to the base station
State feedback kind and feedback result of the feedback message including each MAC PDU.
Optionally, processing module 702, specifically for：
CRC check is carried out to each the MAC PDU at least one MAC PDU；
If the CRC check of each MAC PDU passes through, it is determined that described each MAC PDU
Feedback kind be CRC types, feedback result for confirm ACK, otherwise to described each MAC PDU
Carry out EEC verifications；
If the wrong EEC packet counts of each MAC PDU are more than or equal to preset value, it is determined that
The feedback kind of each MAC PDU is CRC types, feedback result is non-acknowledgement NACK,
The feedback kind for otherwise determining each MAC PDU is EEC types, feedback result for representing
The check results of each EEC packets.
Optionally, the corresponding feedback result of the EEC types is to be equal to using lengthBit sequence
The sequence number of the erroneous packet that row are represented, n is EEC grouping numbers.
Optionally, the form of the feedback message includes：TYPE field and F fields；Wherein, it is described
TYPE field represents the feedback kind of each MAC PDU；The F fields represent described every
The feedback result of one MAC PDU.
Optionally, the form of the feedback message also includes：NUM fields, the NUM fields are represented
The number of the MAC PDU.
The user equipment of the present embodiment, can be used for performing downlink data feedback method embodiment two, three
Technical scheme and the technical scheme of the UE sides of downlink data feedback method embodiment one, it realizes principle and skill
Art effect is similar to, and here is omitted.
Base station embodiment one
The structure of the base station of the present embodiment is similar with the structure described in Fig. 7, equally including sending module, place
Reason module and receiver module.Wherein, sending module, for sending at least one matchmaker to user equipment (UE)
Body access control MAC protocol data cell PDU；Receiver module, for receiving what the UE sent
Feedback information, the feedback information includes each MAC PDU at least one MAC PDU
Feedback kind and feedback result；The feedback kind includes that cyclic redundancy check (CRC) type and mistake are estimated
Meter coding EEC types；Processing module, for according to the feedback information, obtaining described each MAC
The feedback kind and feedback result of PDU.
Optionally, the corresponding feedback result of the EEC types is to be equal to using lengthBit sequence
The sequence number of the erroneous packet that row are represented, n is EEC grouping numbers.
Optionally, the form of the feedback message includes：TYPE field and F fields；Wherein, it is described
TYPE field represents the feedback kind of each MAC PDU；The F fields represent described every
The feedback result of one MAC PDU.
Optionally, the form of the feedback message also includes：NUM fields, the NUM fields are represented
The number of the MAC PDU.
The base station of the present embodiment, can be used for performing the skill of the base station side of downlink data feedback method embodiment one
Art scheme, it realizes that principle is similar with technique effect, and here is omitted.
The present invention also provides a kind of system, including：UE and base station reality described in user equipment embodiment one
Apply the base station described in example one.
The base station of the present embodiment, can be used for performing downlink data feedback method embodiment one, embodiment two
And the technical scheme of embodiment three, it realizes that principle is similar with technique effect, and here is omitted.
Fig. 8 is the structural representation of user equipment embodiment two of the present invention；As shown in figure 8, the present embodiment
User equipment can include：Receiver 801, processor 802 and transmitter 803；Wherein, receiver
801, for receiving at least one media access control MAC protocol data cell PDU of base station transmission；
Processor 802, for following to each the MAC PDU at least one MAC PDU
Ring redundancy check CRC check and wrong estimated coding EEC verifications, it is determined that described each MAC PDU
Feedback kind and feedback result corresponding with the feedback kind；The feedback kind includes CRC types
With EEC types；Transmitter 803, for sending feedback message, the feedback message bag to the base station
Include the feedback kind and feedback result of each MAC PDU.
Optionally, processor 802, specifically for：
CRC check is carried out to each the MAC PDU at least one MAC PDU；
If the CRC check of each MAC PDU passes through, it is determined that described each MAC PDU
Feedback kind be CRC types, feedback result for confirm ACK, otherwise to described each MAC PDU
Carry out EEC verifications；
If the wrong EEC packet counts of each MAC PDU are more than or equal to preset value, it is determined that
The feedback kind of each MAC PDU is CRC types, feedback result is non-acknowledgement NACK,
The feedback kind for otherwise determining each MAC PDU is EEC types, feedback result for representing
The check results of each EEC packets.
Optionally, the corresponding feedback result of the EEC types is to be equal to using lengthBit sequence
The sequence number of the erroneous packet that row are represented, n is EEC grouping numbers.
Optionally, the form of the feedback message includes：TYPE field and F fields；Wherein, it is described
TYPE field represents the feedback kind of each MAC PDU；The F fields represent described every
The feedback result of one MAC PDU.
Optionally, the form of the feedback message also includes：NUM fields, the NUM fields are represented
The number of the MAC PDU.
The user equipment of the present embodiment, can be used for performing downlink data feedback method embodiment two, three
Technical scheme and the technical scheme of the UE sides of downlink data feedback method embodiment one, it realizes principle and skill
Art effect is similar to, and here is omitted.
Base station embodiment two
The structure of base station is similar with the structure shown in Fig. 8 in the present embodiment, equally including transmitter, processes
Device and receiver；Wherein, transmitter, for sending at least one media to user equipment (UE) control is accessed
Medium Access Control (MAC) Protocol Data Unit PDU processed；Receiver, for receiving the feedback information that the UE sends,
The feedback information includes the feedback kind of each MAC PDU at least one MAC PDU
And feedback result；The feedback kind includes cyclic redundancy check (CRC) type and wrong estimated coding EEC
Type；Processor, for according to the feedback information, obtaining the feedback of each MAC PDU
Type and feedback result.
Optionally, the corresponding feedback result of the EEC types is to be equal to using lengthBit sequence
The sequence number of the erroneous packet that row are represented, n is EEC grouping numbers.
Optionally, the form of the feedback message includes：TYPE field and F fields；Wherein, it is described
TYPE field represents the feedback kind of each MAC PDU；The F fields represent described every
The feedback result of one MAC PDU.
Optionally, the form of the feedback message also includes：NUM fields, the NUM fields are represented
The number of the MAC PDU.
The base station of the present embodiment, can be used for performing the skill of the base station side of downlink data feedback method embodiment one
Art scheme, it realizes that principle is similar with technique effect, and here is omitted.
One of ordinary skill in the art will appreciate that：Realize all or part of step of above-mentioned each method embodiment
Suddenly can be completed by the related hardware of programmed instruction.Aforesaid program can be stored in a computer can
In reading storage medium.The program upon execution, performs the step of including above-mentioned each method embodiment；And
Aforesaid storage medium includes：ROM, RAM, magnetic disc or CD etc. are various can be with store program codes
Medium.
Finally it should be noted that：Various embodiments above is only illustrating technical scheme rather than right
Its restriction；Although being described in detail to the present invention with reference to foregoing embodiments, this area it is common
Technical staff should be understood：It still can modify to the technical scheme described in foregoing embodiments,
Either equivalent is carried out to which part or all technical characteristic；And these modifications or replacement, and
The scope of the essence disengaging various embodiments of the present invention technical scheme of appropriate technical solution is not made.
Claims (19)
1. a kind of downlink data feedback method, it is characterised in that include：
User equipment (UE) receives at least one media access control MAC protocol data cell that base station sends
PDU；
The UE is circulated superfluous to each the MAC PDU at least one MAC PDU
Remaining check (CRC) checksum error estimated coding EEC verifications, it is determined that each MAC PDU
Feedback kind and feedback result corresponding with the feedback kind；The feedback kind include CRC types and
EEC types；
The UE to the base station sends feedback message, and the feedback message includes described each MAC
The feedback kind and feedback result of PDU.
2. method according to claim 1, it is characterised in that the UE to it is described each
MAC PDU carry out CRC check and EEC verifications, it is determined that the feedback sort of each MAC PDU
Type and feedback result corresponding with the feedback kind, including：
The UE carries out CRC schools to each the MAC PDU at least one MAC PDU
Test；
If the CRC check of each MAC PDU passes through, it is determined that described each MAC PDU
Feedback kind be CRC types, feedback result for confirm ACK, otherwise to described each MAC PDU
Carry out EEC verifications；
If the wrong EEC packet counts of each MAC PDU are more than or equal to preset value, it is determined that
The feedback kind of each MAC PDU is CRC types, feedback result is non-acknowledgement NACK,
The feedback kind for otherwise determining each MAC PDU is EEC types, feedback result for representing
The check results of each EEC packets.
3. method according to claim 1 and 2, it is characterised in that the EEC types correspondence
Feedback result be to be equal to using lengthThe sequence number of erroneous packet that represents of bit sequence, n is
EEC grouping numbers.
4. the method according to any one of claim 1-3, it is characterised in that the feedback message
Form includes：TYPE field and F fields；Wherein, the TYPE field represents described each MAC
The feedback kind of PDU；The F fields represent the feedback result of each MAC PDU.
5. method according to claim 4, it is characterised in that the form of the feedback message is also wrapped
Include：NUM fields, the NUM fields represent the number of the MAC PDU.
6. a kind of downlink data feedback method, it is characterised in that include：
Base station to user equipment (UE) sends at least one media access control MAC protocol data cell
PDU；
The base station receives the feedback information that the UE sends, and the feedback information includes described at least one
The feedback kind and feedback result of each MAC PDU in individual MAC PDU；The feedback kind bag
Include cyclic redundancy check (CRC) type and wrong estimated coding EEC types；
The base station according to the feedback information, obtain each MAC PDU feedback kind and
Feedback result.
7. method according to claim 6, it is characterised in that the EEC types are corresponding anti-
Feedback result is to be equal to using lengthThe sequence number of erroneous packet that represents of bit sequence, n is EEC point
Group number.
8. the method according to claim 6 or 7, it is characterised in that the form of the feedback message
Including：TYPE field and F fields；Wherein, the TYPE field represents described each MAC PDU
Feedback kind；The F fields represent the feedback result of each MAC PDU.
9. method according to claim 8, it is characterised in that the form of the feedback message is also wrapped
Include：NUM fields, the NUM fields represent the number of the MAC PDU.
10. a kind of user equipment (UE), it is characterised in that include：
Receiver module, for receiving at least one media access control MAC protocol data of base station transmission
Unit PDU；
Processing module, for carrying out to each the MAC PDU at least one MAC PDU
Cyclic redundancy check (CRC) checksum error estimated coding EEC is verified, it is determined that described each MAC
The feedback kind of PDU and feedback result corresponding with the feedback kind；The feedback kind includes CRC
Type and EEC types；
Sending module, for sending feedback message to the base station, the feedback message includes described each
The feedback kind and feedback result of individual MAC PDU.
11. UE according to claim 10, it is characterised in that the processing module, it is concrete to use
In：
CRC check is carried out to each the MAC PDU at least one MAC PDU；
If the CRC check of each MAC PDU passes through, it is determined that described each MAC PDU
Feedback kind be CRC types, feedback result for confirm ACK, otherwise to described each MAC PDU
Carry out EEC verifications；
If the wrong EEC packet counts of each MAC PDU are more than or equal to preset value, it is determined that
The feedback kind of each MAC PDU is CRC types, feedback result is non-acknowledgement NACK,
The feedback kind for otherwise determining each MAC PDU is EEC types, feedback result for representing
The check results of each EEC packets.
12. UE according to claim 10 or 11, it is characterised in that the EEC types pair
The feedback result answered is to be equal to using lengthThe sequence number of erroneous packet that represents of bit sequence, n is
EEC grouping numbers.
13. UE according to any one of claim 10-12, it is characterised in that the feedback message
Form include：TYPE field and F fields；Wherein, the TYPE field represent it is described each
The feedback kind of MAC PDU；The F fields represent the feedback result of each MAC PDU.
14. UE according to claim 13, it is characterised in that the form of the feedback message is also
Including：NUM fields, the NUM fields represent the number of the MAC PDU.
15. a kind of base stations, it is characterised in that include：
Sending module, for sending at least one media access control MAC protocol number to user equipment (UE)
According to unit PDU；
Receiver module, for receiving the feedback information that the UE sends, the feedback information includes described
The feedback kind and feedback result of each MAC PDU at least one MAC PDU；The feedback
Type includes cyclic redundancy check (CRC) type and wrong estimated coding EEC types；
Processing module, for according to the feedback information, obtaining the feedback of each MAC PDU
Type and feedback result.
16. base stations according to claim 15, it is characterised in that the EEC types are corresponding to feed back knot
Fruit is to be equal to using lengthThe sequence number of erroneous packet that represents of bit sequence, n is EEC grouping numbers.
17. base stations according to claim 15 or 16, it is characterised in that the feedback message
Form includes：TYPE field and F fields；Wherein, the TYPE field represents described each MAC
The feedback kind of PDU；The F fields represent the feedback result of each MAC PDU.
18. base stations according to claim 17, it is characterised in that the form of the feedback message is also
Including：NUM fields, the NUM fields represent the number of the MAC PDU.
19. a kind of systems, it is characterised in that include：User described in any one of claim 10-14
Base station described in equipment UE and any one of claim 15-18.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510741183.7A CN106656433B (en) | 2015-11-04 | 2015-11-04 | Downlink data feedback method, equipment and system |
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| CN106656433B CN106656433B (en) | 2019-09-20 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US20110126068A1 (en) * | 2007-09-10 | 2011-05-26 | Lg Electronics Inc. | Signal transmission method using multiple harq |
| 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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2015
- 2015-11-04 CN CN201510741183.7A patent/CN106656433B/en active Active
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2016
- 2016-11-01 WO PCT/CN2016/104207 patent/WO2017076272A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110126068A1 (en) * | 2007-09-10 | 2011-05-26 | Lg Electronics Inc. | Signal transmission method using multiple harq |
| 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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|---|---|
| CN106656433B (en) | 2019-09-20 |
| WO2017076272A1 (en) | 2017-05-11 |
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