CN102201900A - Method and base station for reporting ACK(acknowledge character)/NACK (negative acknowledgement) information - Google Patents
Method and base station for reporting ACK(acknowledge character)/NACK (negative acknowledgement) information Download PDFInfo
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Abstract
The invention discloses a method and a base station for reporting ACK(acknowledge character)/NACK (negative acknowledgement) information so as to increase the decoding speed of ACK/NACK information, ensure timely report of ACK/NACK information, improve the reliability and accuracy of resource scheduling and improve the service quality of business. The method comprises the following steps: receiving the first data from a first time slot and receiving the second data from a second time slot in the same uplink data frame, wherein the first time slot arrives ahead of the second time slot; extracting the first ACK/NACK information from the first data, decoding and storing; extracting the second ACK/NACK information from the second data, and performing revised decoding operation on the first ACK/NACK information; when the set report time comes, determining whether the revised decoding operation is finished; and if the revised decoding operation is not finished, reporting the stored decoded first NAC/NACK information to MAC (medium access control).
Description
Technical field
The present invention relates to the communications field, relate in particular to the method and the base station of a kind of ACK of reporting (Acknowledge Character confirms to reply)/NACK (Negative Acknowledgement, negative response) information.
Background technology
At LTE (Long Term Evolution, Long Term Evolution) in the system, usually at PUSCH channel (Physical Uplink Shared Channel, Physical Uplink Shared Channel) goes up loading ACK/nack message, the ACK/NACK information via of this carrying and control information to be sent and data message carry out after the channel interleaving, and two of appointment time slots in uplink data frames (concrete can referring to 3GPP TS 36.212 (860) agreements) are gone up transmission; The mapping position of ACK/NACK information correspondence is positioned at the lowermost end of the shared resource of user, PRB (the Physical Resource Block that ACK/NACK information is shared, Physical Resource Block) quantity uncertain, to shine upon length uncertain etc., receiving terminal is when detecting, need detect according to the sequencing of running time-frequency resource, after having detected all running time-frequency resources, again ACK/NACK information is deciphered.Under single user's peak rate scene, because it is the whole system bandwidth that the user sends the shared frequency domain bandwidth of data, therefore, needs to finish the detection demodulation of whole system bandwidth before the decoding of carrying out ACK/NACK information, therefore, ACK/NACK is deciphered the time delay that needs than long.In addition, for requiring ACK feedback sequential is the sub-frame of uplink of the subframe relation of N+4, processing pressure is heavier, in concrete timing Design, occur calling time on the ACK/NACK information when arriving easily, also do not finish the detection demodulation to running time-frequency resource, therefore causing calling time in time to report the problem of ACK/NACK information when arriving.
In the LTE system, the PUSCH channel obtains two time slot data mapping position and deinterleaving pattern respectively through after detection, descrambling and the demodulation of receiving terminal to two time slots.The mapping position of ACK/NACK information has following feature: (1) is positioned at several PRB of end of user data; (2) has fixing column position; (3) because parameters such as modulation system, HARQ-ACK offset, digital coding rate are uncertain, therefore, the mapping length of ACK/NACK is uncertain.
The calculating feedback method of existing ACK/NACK is for to decipher ACK/NACK information after the data demodulates result who obtains two time slots again.Obtain ACK/NACK information in the prior art, and report the mode of this ACK/NACK information to be mainly: all PRB of whole system bandwidth are carried out after whole demodulation, extract ACK/NACK information, and the ACK/NACK information that extracts deciphered, ACK/NACK information after will deciphering again writes in the message buffering district, at last give MAC (Medium Access Control, medium access control) in the last ACK/NACK feedback information that calls time when arriving during message buffering gone.
Though the existing complete easy to understand of mode that obtains ACK/NACK information and report, but processing delay is very big under the abominable scene of some configuration load height, channel circumstance, therefore, be easy to exist the ACK/NACK information that calls time after also not obtaining deciphering when arriving, fail when arriving in time to cause MAC to lack the problem of HARQ process then thereby cause calling time to the problem of MAC feeding back ACK/nack message; The technical problem of further bringing is as follows: when number of users after a little while, MAC can can't dispatch interface-free resources because lacking the HARQ process, thereby causes the waste of interface-free resources; When the user more for a long time, may can not in time to receive the scheduling that causes retransmitting not prompt enough owing to HARQ-ACK information, cause problems such as service quality such as time delay is excessive, business packet abandons.
Summary of the invention
Above-mentioned technical problem at the prior art existence, the embodiment of the invention provides a kind of method and base station of the ACK/NACK of reporting information, to improve decoding speed to ACK/NACK information, guarantee in time to report ACK/NACK information, with the reliability and the accuracy of raising scheduling of resource, thereby improve QoS.
A kind of method that reports ACK/NACK information comprises:
First time slot in same uplink data frames receives first data and receives second data at second time slot, and described first time slot arrives in second time slot in advance;
Go out first from described first extracting data and confirm that replying ACK/ negative response nack message deciphers and store; Carry out again from described second extracting data and go out the 2nd ACK/NACK information is revised decoding to a described ACK/NACK information operation;
On setting, call time when arriving, determine whether described correction decoded operation is finished, if not, the ACK/NACK information after the decoding of storage is reported media access control MAC.
A kind of base station comprises:
Receiving element is used for receiving first data and receiving second data at second time slot at first time slot of same uplink data frames, and described first time slot arrives in second time slot in advance;
First confirms to reply ACK/ negative response nack message processing unit, is used for going out an ACK/NACK information from described first extracting data and deciphers and store;
The 2nd ACK/NACK information process unit is used for going out the 2nd ACK/NACK information is revised decoding to a described ACK/NACK information operation from described second extracting data;
Judging unit is used for calling time when arriving on setting, and determines whether described correction decoded operation is finished;
Report the unit, be used in described judgment unit judges result the ACK/NACK information after the decoding of storage being reported media access control MAC for not the time.
The technical scheme that adopts the embodiment of the invention to provide, can realize the data of the time slot of elder generation's arrival in two time slots are carried out demodulation, be stored in the buffer area after the extraction of ACK/NACK information and the decoding, do not need the data of two time slots are carried out demodulation, restart ACK/NACK decoding flow process after a series of processing such as descrambling, therefore having overcome needs in the prior art two time slots are carried out data demodulates, after the descrambling, the ACK/NACK information that demodulates is deciphered again and caused time delay bigger, may cause then calling time to report the problem of the ACK/NACK information after the decoding when arriving; Therefore, adopt technical solution of the present invention, improved the speed that ACK/NACK information is deciphered, guaranteeing can be timely to MAC feeding back ACK/nack message when arriving last calling time, so that MAC can carry out scheduling of resource and retransfer scheduling according to the ACK/NACK information that in time reports, thereby improve the reliability and the accuracy of scheduling of resource, improve QoS.
Description of drawings
Fig. 1 is the schematic diagram of the deinterleaving pattern under the Normal pattern in the embodiment of the invention;
Fig. 2 A is the method flow diagram that the base station reports ACK/NACK information in the embodiment of the invention one;
Fig. 2 B is the method flow diagram that the base station reports ACK/NACK information in the embodiment of the invention two;
Fig. 3 A is the schematic diagram that writes an ACK/NACK information in the embodiment of the invention in the decode results data field of buffer area;
The schematic diagram of Fig. 3 B on the basis of Fig. 3 A, adopting null value that a described ACK/NACK information is revised;
Fig. 3 C is for revising the schematic diagram of the resulting ACK/NACK information in decoding back to an ACK/NACK information according to the 2nd ACK/NACK information;
Fig. 4 is the structural representation of base station in the embodiment of the invention.
Embodiment
Above-mentioned technical problem at the prior art existence, the embodiment of the invention provides a kind of method and base station of the ACK/NACK of reporting information, to improve decoding speed to ACK/NACK information, guarantee in time to report ACK/NACK information, with the reliability and the accuracy of raising scheduling of resource, thereby improve QoS.Report the method for ACK/NACK information to comprise: first time slot in same uplink data frames receives first data and receives second data at second time slot, and described first time slot arrives in second time slot in advance; Going out an ACK/NACK information from described first extracting data deciphers and stores; Carry out again from described second extracting data and go out the 2nd ACK/NACK information is revised decoding to a described ACK/NACK information operation; On setting, call time when arriving, determine whether described correction decoded operation is finished, if not, the ACK/NACK information after the decoding of storage is reported MAC.The technical scheme that adopts the embodiment of the invention to provide, can realize the data of the time slot of elder generation's arrival in two time slots are carried out demodulation, be stored in the buffer area after the extraction of ACK/NACK information and the decoding, do not need the data of two time slots are carried out demodulation, restart ACK/NACK decoding flow process after a series of processing such as descrambling, therefore having overcome needs in the prior art two time slots are carried out data demodulates, after the descrambling, the ACK/NACK information that demodulates is deciphered again and caused time delay bigger, may cause then calling time to report the problem of the ACK/NACK information after the decoding when arriving; Therefore, adopt technical solution of the present invention, improved the speed that ACK/NACK information is deciphered, guaranteeing can be timely to MAC feeding back ACK/nack message when arriving last calling time, so that MAC can carry out scheduling of resource and retransfer scheduling according to the ACK/NACK information that in time reports, thereby improve the reliability and the accuracy of scheduling of resource, improve QoS.
In the embodiment of the invention, the row inserted mode of ACK/NACK information comprises two kinds of patterns as shown in table 1 (being respectively Normal pattern and Extended pattern); The base station receives first data and second time slot when receiving second data at first time slot, respectively first data and second data are carried out demodulation, obtain deinterleaving pattern as shown in Figure 1 respectively, obtain the complete decoding initial information pattern of corresponding ACK/NACK information more respectively according to the deinterleaving pattern, promptly as the a0 among Fig. 1, a1, a2... and (R '
Start-1) * C
Mux+ 2, (R '
Start-1) * C
Mux+ 9, R '
Start* C
MuxThe corresponding relation of+2...; Deinterleaving pattern shown in Figure 1 number is example for row after having deducted two row frequency pilot signs under the Normal pattern; The deinterleaving process can be described 3GPP TS 36.212 (860) referring to the protocol channels interleaving process, 5.2.2.8 joint Channel interleaver) content, do not repeat them here.
Table 1 is that the row of ACK/NACK information insert mapping table
| CP?configuration | Column?Set |
| Normal | {2，3，8，9} |
| Extended | {1，2，6，7} |
In the embodiment of the invention, the base station can adopt following four kinds of modes to handle first data and second data when receiving the user in first data of first time slot transmission with in second data that second time slot sends:
Before mode one, the arrival of on setting, calling time, earlier first data are carried out demodulation, determine an ACK/NACK positional information, and the extracting data that obtains from demodulation according to a described ACK/NACK positional information goes out an ACK/NACK information; Adopt null value that a described ACK/NACK information is revised, and a revised ACK/NACK information is deciphered the decode results data field that is stored to buffer area afterwards; The time of setting reports MAC with an ACK/NACK information of storing in the decode results data field when arriving.
Before mode two, the arrival of on setting, calling time, earlier first data are carried out demodulation, determine an ACK/NACK positional information, and the extracting data that obtains from demodulation according to a described ACK/NACK positional information goes out an ACK/NACK information, and is stored to the decode results data field in the buffer memory after an ACK/NACK information deciphered;
If on the also no show of calling time, then continue second data are carried out demodulation, determine the 2nd ACK/NACK positional information, and the extracting data that obtains from demodulation according to described the 2nd ACK/NACK positional information goes out the 2nd ACK/NACK information; If also not on call time, according to described the 2nd ACK/NACK information a described ACK/NACK information is revised that (process of correction is actual in ACK/NACK information and the 2nd ACK/NACK information are merged, revert to complete ACK/NACK information), and a revised ACK/NACK information deciphered and is stored to the decode results data field, call time when arriving a revised ACK/NACK information is deciphered resulting ACK/NACK information report MAC with storage last; Call time if revise imperfect tense just to have arrived, then the ACK/NACK information after the decoding that will store reports MAC.
Below in conjunction with Figure of description technical solution of the present invention is described in detail.
Referring to Fig. 2 A, for base station in the embodiment of the invention one reports the method flow diagram of ACK/NACK information, this method comprises:
Call time when arriving on setting in step 104, base station, whether the correction decoded operation in the determining step 103 is finished, and if not, the ACK/NACK information after the decoding of storage reported MAC.
Preferably, above-mentioned steps 104 also can comprise step: the base station is called time when arriving on setting, determine that described correction decoded operation is finished, the ACK/NACK information after then storage correction is deciphered, and the ACK/NACK information after the correction that will the store decoding reports described MAC.
Preferably, in the above-mentioned steps 102, specifically can comprise: described first data are carried out demodulation, determine an ACK/NACK positional information, and the extracting data that obtains from demodulation according to a described ACK/NACK positional information goes out an ACK/NACK information, being stored in the decode results data field of memory block after an ACK/NACK information being deciphered again.
With the Normal pattern is example, the ACK/NACK information setting is in the 2nd row, the 3rd row, the 8th row and the 9th row, the one ACK/NACK information of coming out from first extracting data can be as the A0 Fig. 3 A, A2, A5, A6, A9 etc., and the A0, the A2 that obtain, A5, A6, A9 etc. are written in the information extraction data field.
Preferably, in the above-mentioned steps 102, before a described ACK/NACK information deciphered, adopt null value that an ACK/NACK information that extracts is revised, a revised ACK/NACK information can be shown in Fig. 3 B.
In the above-mentioned steps 103, specifically can comprise: described second data are carried out demodulation, determine the 2nd ACK/NACK positional information, and the extracting data that obtains from demodulation according to described the 2nd ACK/NACK positional information goes out the 2nd ACK/NACK information; According to the 2nd ACK/NACK information the one ACK/NACK information is revised again, and a revised ACK/NACK information is deciphered the ACK/NACK information that obtains revising after the decoding.Revising the ACK/NACK information that obtains after the decoding can be shown in Fig. 3 C.
For further in detail, clearly technical solution of the present invention is described, describe with a concrete example below, concrete method flow is shown in Fig. 2 B.
Referring to Fig. 2 B, for base station in the embodiment of the invention two reports the method flow diagram of ACK/NACK information, this method comprises:
Demodulation is carried out to described first data before calling time and arriving in step 202, base station on setting, determine an ACK/NACK positional information.
Call time and whether arrive on before step 209, decoding are finished, if execution in step 210 then, otherwise execution in step 211.
More preferably, in the embodiment of the invention, the mode of determining an ACK/NACK positional information and the 2nd ACK/NACK positional information can be as follows: described first data are carried out after the demodulation, according to an ACK/NACK mapping principle of setting in the agreement (3GPP TS 36.212 (860) agreements), determine an ACK/NACK positional information; Second data are carried out after the demodulation,, determine the 2nd ACK/NACK positional information according to the 2nd ACK/NACK mapping principle of setting in the agreement (3GPP TS36.212 (860) agreement).
More preferably, call time and to be provided with flexibly according to factors such as customer volume, traffic carrying capacity, subframe proportionings in the embodiment of the invention, determine according to the actual requirements.
More preferably, in the embodiment of the invention, loading ACK/nack message in the PUSCH channel.
Based on the identical inventive concept of said method flow process, the embodiment of the invention also provides a kind of base station, and the structure of this base station as shown in Figure 4.
Referring to Fig. 4, be the structural representation of base station in the embodiment of the invention, this base station can comprise:
Receiving element 41 is used for receiving first data and receiving second data at second time slot at first time slot of same uplink data frames, and described first time slot arrives in second time slot in advance.
The one ACK/NACK information process unit 42 is used for going out an ACK/NACK information from described first extracting data and deciphers and store.
The 2nd ACK/NACK information process unit 43 is used for going out the 2nd ACK/NACK information is revised decoding to a described ACK/NACK information operation from described second extracting data.
Judging unit 44 is used for calling time when arriving on setting, and determines whether the 43 correction decoded operations of described the 2nd ACK/NACK information process unit are finished.
Preferably, the 2nd ACK/NACK information process unit 43 is further used for, and calls time on setting and has finished when arriving when revising decoded operation, and the ACK/NACK information after the decoding is revised in storage;
Preferably, an ACK/NACK information process unit 42 also comprises:
Primary importance information is determined subelement 421, is used for described first data are carried out demodulation, determines first and confirms to reply ACK/ negative response NACK positional information;
The first information extracts subelement 422, is used for going out an ACK/NACK information according to the extracting data that a described ACK/NACK positional information obtains from demodulation;
First information storing sub-units 423 is used for a described ACK/NACK information is deciphered the decode results data field that is stored to buffer area afterwards;
Described the 2nd ACK/NACK information process unit 43 also comprises:
Second place information is determined subelement 431, is used for described second data are carried out demodulation, determines the 2nd ACK/NACK positional information;
The second information extraction subelement 432 is used for going out the 2nd ACK/NACK information according to the extracting data that described the 2nd ACK/NACK positional information obtains from demodulation;
The second information stores subelement 433 is used for described the 2nd ACK/NACK information is deciphered the decode results data field that is stored to buffer area afterwards.
Preferably, first information storing sub-units 423 is further used for, and before a described ACK/NACK information is deciphered, adopts null value that a described ACK/NACK information is revised.
Preferably, receiving element 41 specifically is used for: receive described first data and described second data from PUSCH.
In the embodiment of the invention, the technical scheme that adopts the embodiment of the invention to provide, can realize the data of the time slot of elder generation's arrival in two time slots are carried out demodulation, be stored in the buffer area after the extraction of ACK/NACK information and the decoding, do not need the data of two time slots are carried out demodulation, restart ACK/NACK decoding flow process after a series of processing such as descrambling, therefore having overcome needs in the prior art two time slots are carried out data demodulates, after the descrambling, the ACK/NACK information that demodulates is deciphered again and caused time delay bigger, may cause then calling time to report the problem of the ACK/NACK information after the decoding when arriving; Therefore, adopt technical solution of the present invention, improved the speed that ACK/NACK information is deciphered, guaranteeing can be timely to MAC feeding back ACK/nack message when arriving last calling time, so that MAC can carry out scheduling of resource and retransfer scheduling according to the ACK/NACK information that in time reports, thereby improve the reliability and the accuracy of scheduling of resource, improve QoS.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (10)
1. a method that reports ACK/NACK information is characterized in that, comprising:
First time slot in same uplink data frames receives first data and receives second data at second time slot, and described first time slot arrives in second time slot in advance;
Go out first from described first extracting data and confirm that replying ACK/ negative response nack message deciphers and store; Carry out again from described second extracting data and go out the 2nd ACK/NACK information is revised decoding to a described ACK/NACK information operation;
On setting, call time when arriving, determine whether described correction decoded operation is finished, if not, the ACK/NACK information after the decoding of storage is reported media access control MAC.
2. the method for claim 1 is characterized in that, also comprises:
On setting, call time when arriving, determine that described correction decoded operation is finished, the ACK/NACK information after then storage correction is deciphered, and the ACK/NACK information after the correction that will the store decoding reports described MAC.
3. the method for claim 1, it is characterized in that, go out an ACK/NACK information from described first extracting data, comprise: described first data are carried out demodulation, determine an ACK/NACK positional information, and the extracting data that obtains from demodulation according to a described ACK/NACK positional information goes out an ACK/NACK information;
Go out the 2nd ACK/NACK information from described second extracting data, comprise: described second data are carried out demodulation, determine the 2nd ACK/NACK positional information, and the extracting data that obtains from demodulation according to described the 2nd ACK/NACK positional information goes out the 2nd ACK/NACK information.
4. the method for claim 1 is characterized in that, also comprises:
Before a described ACK/NACK information deciphered, adopt null value that an ACK/NACK information that extracts is revised.
5. as each described method of claim 1～4, it is characterized in that the channel of described first time slot and the second time slot correspondence is Physical Uplink Shared Channel PUSCH.
6. a base station is characterized in that, comprising:
Receiving element is used for receiving first data and receiving second data at second time slot at first time slot of same uplink data frames, and described first time slot arrives in second time slot in advance;
First confirms to reply ACK/ negative response nack message processing unit, is used for going out an ACK/NACK information from described first extracting data and deciphers and store;
The 2nd ACK/NACK information process unit is used for going out the 2nd ACK/NACK information is revised decoding to a described ACK/NACK information operation from described second extracting data;
Judging unit is used for calling time when arriving on setting, and determines whether described correction decoded operation is finished;
Report the unit, be used in described judgment unit judges result the ACK/NACK information after the decoding of storage being reported media access control MAC for not the time.
7. base station as claimed in claim 6 is characterized in that, described the 2nd ACK/NACK information process unit is further used for, and calls time on setting and has finished when arriving when revising decoded operation, and the ACK/NACK information after the decoding is revised in storage;
The described unit that reports is further used for, and when being, the ACK/NACK information after the correction decoding of storage is reported described MAC in described judgment unit judges result.
8. base station as claimed in claim 7 is characterized in that, a described ACK/NACK information process unit also comprises:
Primary importance information is determined subelement, is used for described first data are carried out demodulation, determines first and confirms to reply ACK/ negative response NACK positional information;
The first information extracts subelement, is used for going out an ACK/NACK information according to the extracting data that a described ACK/NACK positional information obtains from demodulation;
First information storing sub-units is used for a described ACK/NACK information is deciphered the decode results data field that is stored to buffer area afterwards;
Described the 2nd ACK/NACK information process unit also comprises:
Second place information is determined subelement, is used for described second data are carried out demodulation, determines the 2nd ACK/NACK positional information;
The second information extraction subelement is used for going out the 2nd ACK/NACK information according to the extracting data that described the 2nd ACK/NACK positional information obtains from demodulation;
The second information stores subelement is used for described the 2nd ACK/NACK information is deciphered the decode results data field that is stored to buffer area afterwards.
9. base station as claimed in claim 8 is characterized in that, described first information storing sub-units is further used for, and before a described ACK/NACK information is deciphered, adopts null value that a described ACK/NACK information is revised.
10. as each described base station of claim 6～9, it is characterized in that described receiving element specifically is used for: receive described first data and described second data from Physical Uplink Shared Channel PUSCH.
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