CN101499876A - Method and apparatus for adaptively executing CRC check in wireless link - Google Patents
Method and apparatus for adaptively executing CRC check in wireless link Download PDFInfo
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- CN101499876A CN101499876A CNA2008100089804A CN200810008980A CN101499876A CN 101499876 A CN101499876 A CN 101499876A CN A2008100089804 A CNA2008100089804 A CN A2008100089804A CN 200810008980 A CN200810008980 A CN 200810008980A CN 101499876 A CN101499876 A CN 101499876A
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Abstract
The invention discloses a method and a device that are used for self-adaptive CRC checking in wireless links and used in the technical field of wireless transmission. The self-adaptive CRC checking method and device judge link states according to link channel quality indicating (CQI) information, user equipment movement speed information, NACK indicating statistical information and transmission data block length information, etc.; a CRC checking scheme based on transmission blocks is adopted for links in good state, and the error detection and the retransmission adopt the unit of a data transmission block; a CRC checking scheme based on code blocks is adopted for links in bad state, and the error detection and the retransmission adopt the unit of a code block. Emitters and receivers switch link state information in an explicit or implicit way. The self-adaptive CRC checking method and device can realize self-adaptive CRC checking according to link states, find balance between system cost and retransmission efficiency, and improve system transmission efficiency.
Description
Technical field
The present invention relates to the technical field of wireless data transmission, specifically is a kind ofly to carry out the method for Cyclic Redundancy Check adaptively according to wireless chaining status, and transmitter apparatus and the receiver device of realizing this method.
Background technology
In wireless communication system, CRC check is a kind of bit error detection method commonly used.The basic principle of CRC check is, the CRC check sign indicating number is removed the binary numeral of this data flow by a constant and got, and quotient is abandoned, and remainder is appended to data stream trailer as the CRC check sign indicating number, produces new data flow and sends.At receiving terminal, new data flow is removed by same constant, checks whether remainder is a constant (being generally 0).If remainder is a constant, just thinks that transmission is correct, otherwise just think and mistake takes place in the transmission.
The CRC check sign indicating number usually is added on detected data message back and data and sends together, and its length is specific several bits, detects this frame data as the redundant information of frame data for receiving apparatus and uses.Because its strong detectability and the characteristics of carrying out have easily obtained utilization widely.
CRC check is used with mixing automatic repeat requests (HARQ) technology usually, thereby improves the efficient of wireless transmission, guarantees the service quality of data communication.Receiving terminal produces feedback acknowledgment information according to the CRC check result, and when the CRC check failure, then feedback needs retransmission information, and CRC check is correct, and then feedback need not retransmission information.After transmitting terminal receives feedback information, determine whether to carry out retransmission operation according to its information indication.
Fig. 6 has provided the document of 3GPP LTE (Long Term Evolution) tissue: TS 36.300 V8.1.0 " 3GPP TSG RAN EUTRA and EUTRAN Overall description; Stage 2 (Release 8) " in the downlink physical layer model that provides.As shown in Figure 6, at the base station end, user's transmission data block enters chnnel coding and rate-matched module after adding CRC check sign indicating number and code block cutting operation through the CRC module, then carries out operations such as data interlacing, symbol-modulated, Radio Resource mapping and antenna mapping.
At the subscriber equipment end, go that mapping, Radio Resource go that mapping, symbol demodulation, data deinterleave, behind rate-matched and the channel-decoding, enter the CRC check module and carry out data error detection and code block union operation through antenna.If the mistake of detecting then notify the HARQ module to carry out retransmission operation.
Literature search through prior art is found, many renowned companies such as Nortel, Qualcomm, LGElectronics, NTT DoCoMo proposed in the 50th meeting of 3GPP TSG RAN1 that Athens, GRE is held and multiple CRC check scheme have been discussed (referring to LTE motion R1-073268 on August 20th～24,2007, R1-073310, R1-073108, R1-073438).
Scheme as shown in Figure 7 is a most basic a kind of scheme, and transmission data block is added the CRC check sign indicating number, carries out cutting apart of code block again.Its advantage is that expense is less relatively, and shortcoming is after error of transmission takes place, and can't judge which code block makes mistakes, and needs to retransmit whole transmission block, thereby has reduced throughput of system.
Scheme as shown in Figure 8 is another kind of basic scheme, this scheme is carried out code block to the longer transmission piece and is cut apart, respectively each code block is added the CRC check sign indicating number then, after the CRC of code block detection makes mistakes, only need to retransmit this code block, need not to retransmit whole transmission block, saved the resource of system to a certain extent, but the more last scheme of this scheme has increased a certain amount of overhead.
Three kinds of improved CRC check schemes as shown in Figure 9, the pattern of attempting to set up a mixing merges the advantage of two kinds of schemes, but the expense that these schemes are introduced do not obtain reducing, and whether its performance has advantage also among further research.Given this, be necessary to continue further exploration, need find out a kind of efficient and simple mechanism that is suitable for, advantage that can two kinds of basic schemes of more effective fusion further improves the transmission performance of system.
Summary of the invention
The advantage that the objective of the invention is to two kinds of basic CRC check schemes of effective fusion, the method of adaptive CRC check in a kind of Radio Link is provided, it comprehensively indicates the link-state information statistics and the transmission data block length that Link State is evaluated and tested such as CQI, subscriber equipment translational speed, NACK, carries out corresponding C RC verification operation according to evaluation result.The adaptive approach that the present invention proposes flexibly effectively and be easy to realize.
In order to realize the advantage of these and other, and according to purpose of the present invention, as concrete and describe widely herein, the present invention is embodied in the method and apparatus of adaptive CRC check in a kind of Radio Link, it is convenient to carry out corresponding CRC check dynamically according to Link State in wireless transmission, thereby improves the transmission performance of system.
In a first aspect of the present invention, a kind of self adaptation CRC check sign indicating number adding method has been proposed, comprise step: obtain link-state information; Adjudicate the represented state of described link-state information; And the transmission data that will launch are added the CRC check code operations according to described court verdict.
In a second aspect of the present invention, a kind of self adaptation CRC check method has been proposed, comprise step: obtain link-state information; Adjudicate the represented state of described link-state information; And according to described court verdict the transmission data that receive are carried out CRC check and operate.
In a third aspect of the present invention, a kind of transmitter apparatus has been proposed, comprising: the link-state information acquiring unit is used to obtain link-state information; Decision unit is adjudicated the represented state of described link-state information; And CRC check sign indicating number adding device, according to described court verdict the transmission data that will launch are added the CRC check code operations.
In a fourth aspect of the present invention, a kind of receiver device has been proposed, comprising: the link-state information receiving element, obtain link-state information; Decision unit is adjudicated the represented state of described link-state information; And the CRC check unit, according to described court verdict the transmission data that receive are carried out the CRC check operation.
Utilize method of the present invention and corresponding transmitter and receiver equipment, can carry out corresponding C RC verification according to Link State neatly, thereby improve the data transmission efficiency of wireless system.
Description of drawings
From the detailed description below in conjunction with accompanying drawing, above-mentioned feature and advantage of the present invention will be more obvious, wherein:
Fig. 1 shows according to the embodiment of the invention and carries out the base station of self adaptation CRC check method and the functional block diagram of subscriber equipment;
Fig. 2 shows the detail flowchart according to the self adaptation CRC check method of first embodiment of the invention;
Fig. 3 shows the detail flowchart according to the self adaptation CRC check method of second embodiment of the invention;
Fig. 4 shows the detail flowchart according to the self adaptation CRC check method of third embodiment of the invention;
Fig. 5 shows the detail flowchart according to the self adaptation CRC check method of fourth embodiment of the invention;
Fig. 6 is the down physical layer model framework chart of the cell mobile communication systems of 3GPP LTE tissue definition;
Fig. 7 is based on the schematic diagram that transmission block adds the CRC check sign indicating number;
Fig. 8 is based on the schematic diagram that code block adds the CRC check sign indicating number; And
Fig. 9 is the schematic diagram that hybrid mode is added the CRC check sign indicating number.
Embodiment
The embodiment of first-selection of the present invention will be described below in conjunction with the accompanying drawings.In the description process below, having omitted is unnecessary details and function for the present invention, obscures to prevent that the understanding of the present invention from causing.
For clear detailed elaboration performing step of the present invention, specific embodiments of the invention have been provided below.Need to prove, the invention is not restricted to this application, but applicable to other communication systems.
Fig. 1 shows according to the embodiment of the invention and carries out the base station of self adaptation CRC check method and the functional block diagram of subscriber equipment.Embodiments of the invention will be described the situation of down link on down physical layer model based as shown in Figure 6.
As shown in Figure 1, comprise HARQ processing unit 101 according to the base station of the embodiment of the invention, it receives ACK/NACK information from subscriber equipment from ascending control channel, and determines the data that will retransmit according to nack message.
Link State acquiring unit 103 is used to obtain the link-state information such as CQI information, moving user equipment and NACK statistical information, and link-state information is input in the decision device 104.
In addition, data block input unit 102 reads the data block that will send from the storage device such as buffer, be input in the decision device 104.
In decision device 104, judge that the link-state information of input shows that channel is greater than predetermined threshold value, perhaps less than predetermined threshold value, thereby determine that Link State is better (first state) or relatively poor (second state).Simultaneously, this decision device 104 also sends to subscriber equipment by down control channel with this link-state information.
When decision device 104 judges that the link-state information of input shows that Link State is better (first state), transmission block CRC adding device 106 adds the CRC check bit directly for this transmission block afterbody, second cutting unit 108 is divided into a plurality of code blocks with the transmission block that has added the CRC check bit then, and then carries out chnnel coding by chnnel coding unit 109.
When decision device 104 judges that the link-state information of input shows that Link State is relatively poor (second state), first cutting unit 105 directly is divided into a plurality of code blocks with this transmission block, code block CRC adding device 107 adds separately CRC check bit to each afterbody of a plurality of code blocks of cutting apart then, and then carries out chnnel coding by chnnel coding unit 109.
Like this, the Link State indicated according to the link-state information that is obtained can carry out the interpolation of CRC check bit adaptively.
At the subscriber equipment end, as shown in Figure 1, Link State receiving element 203 receives link-state information from the base station from down control channel, and is entered in the selector 204.
As another embodiment, Link State receiving element 203 also can be as the link-state information of Link State acquiring unit 103 direct acquisitions such as CQI information, moving user equipment and NACK statistical message.
In addition, the symbol after the 209 pairs of demodulation in channel-decoding unit carries out channel-decoding, exports corresponding code block to selector 204.
At selector 204, determine Link State according to link-state information, for example first state (better) or second state (relatively poor).
Under the situation of first state, because Link State is better, first merge cells 206 directly merges channel-decoding unit 209 code block that obtains of decoding, and forms transmission block, is combined the transmission block that obtains by transmission block CRC error detection unit 208 then and carries out the CRC error detection.
Under the wrong situation of this transmission block, transmission block CRC error detection unit 208 sends wrong indication to HARQ unit 201, indicates in this transmission block wrongly, sends the NACK message at this transmission block.Show do not have in this transmission block under the wrong situation in the crc check result, data block output unit 202 is used for follow-up processing with this data block output, for example shows.
On the other hand, under second state, because the channel shape is relatively poor, code block CRC error detection unit 205 at first carries out CRC check to this each code block, is not having under the wrong situation, and second merge cells 207 is removed the CRC check sign indicating number, and each code block is merged into data block.Check out under the wrong situation of certain code block in code block CRC error detection unit 205, send wrong indication to HARQ unit 201, this HARQ unit 201 is by the NACK message of ascending control channel transmission at this code block.
Like this, NACK message at transmission block or code block can be obtained by ascending control channel in the base station, retransmits corresponding transmission block or code block according to this NACK message then.
Below in conjunction with the method for accompanying drawing 2～5 detailed descriptions according to the embodiment of the invention.Fig. 2 shows the detail flowchart according to the self adaptation CRC check method of first embodiment of the invention.
As shown in Figure 2, at step S101, subscriber equipment by such as the channel of PUCCH or PUSCH to base station reporting links information, this link information comprises the CQI information of its down link.
At step S102, the decision device 104 of base station is set Link State decision rule, and adjudicates the Link State of its down link according to the link information of this criterion and user equipment to report.For example, decision device 104 setting thresholding CQI values are q
Th, Link State I can be by a bit flag, wherein I ∈ 0,1}, 1 labeled link state is good, 0 labeled link state difference, acquiescence I=1.The Link State judgement standard is, if the CQI value of subscriber equipment feedback is greater than thresholding CQI value q
ThJudge that then Link State is good, I=1 is arranged, if the CQI value of subscriber equipment feedback is less than thresholding CQI value q
ThJudge that then Link State is poor, I=0 is arranged.
At step S103, the decision device 104 of base station sends to subscriber equipment to the link-state information I that judgement among the step S102 obtains by the PDCCH channel with signaling method.
Preferably, the link-state information in this step can periodically send, the transmission that can also happen suddenly in the mode of difference.Detailed process can be described as, consistent as the Link State of adjudicating among the step S102 with a preceding court verdict, then can skip this step, do not send any information to subscriber equipment, inconsistent as the Link State and a preceding court verdict of adjudicating among the step S102, then the base station need send Link State through this step and changes the information notification subscriber equipment, make it upgrade Link State, and this information can be with a bit flag.
At step S104, the Link State that the base station obtains according to judgement among the step S102 carries out corresponding C RC operation.
As mentioned above, if described Link State good (first state), then the transmission data block of 106 pairs of transmission of transmission block CRC adding device data adds the CRC check sign indicating number, and second cutting unit 108 is divided into code block with described transmission data block then.If Link State is poor, then first cutting unit 105 is divided into code block with transmission data block, and code block CRC adding device 107 is respectively each code block and adds CRC check bit (sign indicating number) then.
At step S105, the code block that 109 pairs of the chnnel coding unit of base station have added check bit carries out chnnel coding, by the PDSCH channel transmission data of adding the CRC check sign indicating number is sent to subscriber equipment then.
At step S106, the Link State receiving element 203 receiving link status information of subscriber equipment, and selector 204 is judged Link State according to aforesaid method, and according to the link-state information that receives the transmission data that receive among the step S105 is carried out the CRC error detection.
If Link State is good, then first merge cells 206 will receive the code block that transmits data and be merged into transmission data block, and the 208 pairs of transmission data blocks in transmission block CRC error detection unit carry out the CRC error detection.If Link State is poor, then the code block of the transmission data that receive of 205 pairs of code block CRC error detection unit carries out the CRC error detection respectively, and second merge cells, 207 code-aiming blocks remerge into transmission data block after removing the CRC check sign indicating number.
At step S107, the HARQ unit 201 of subscriber equipment is according to the CRC error detection result of error detection unit 208 or code block error detection unit 205, by PUCCH or PUSCH to base station feedback ACK/NACK information.For the feedback information of different Link States, its information bit length is also different.The situation that Link State is good, its ACK/NACK information can be by bit flag, and the situation of Link State difference, how much its ACK/NACK information can have a plurality of bit flag according to code block.
At step S108, the HARQ processing unit 101 of base station receives ACK/NACK message, transmits the retransmission operation of data accordingly according to the feedback information that receives.
For example, if the nack message of 1 bit is received in the base station, then whole transmission data block is retransmitted in the base station, if the ACK/NACK information of a plurality of bits is received in the base station, then according to the bit of makeing mistakes of its sign, retransmits corresponding code block.
Like this, to step S108, just can ensure that the base station of wireless area and all subscriber equipmenies normally move by circulation execution in step S101.
Fig. 3 shows the detail flowchart according to the self adaptation CRC check method of second embodiment of the invention.
As shown in Figure 3, at step S201, the link-state information acquiring unit 103 contribution link information of base station equipment are sent to decision device 104 then and adjudicate.
According to present embodiment, this decision rule can be set in advance for system.Its link information can comprise CQI information, subscriber equipment translational speed information, NACK indication statistical information and the transport block size information of link.
Simultaneously, the base station is adjudicated the Link State receiving element 203 that the link-state information that obtains sends to subscriber equipment to decision device 104 by control channel.As mentioned above, this send mode can be periodic transmission, also can paroxysmal transmission when Link State changes.
At step S202, the selector 204 of subscriber equipment is judged the Link State of down link.For example, selector 204 setting thresholding CQI values are q
Th, Link State I can be by a bit flag, wherein I ∈ 0,1}, 1 labeled link state is good, 0 labeled link state difference, acquiescence I=1.The Link State judgement standard is, if the CQI value is greater than thresholding CQI value q
ThJudge that then Link State is good, I=1 is arranged, if the CQI value is less than thresholding CQI value q
ThJudge that then Link State is poor, I=0 is arranged.
At step S203, subscriber equipment sends to the base station by the PUCCH/PUSCH channel with the link-state information that judgement obtains.
At step S204, the base station is carried out the CRC check sign indicating number according to the Link State court verdict and is added operation.
If Link State is good, then 106 pairs of transmission data blocks of transmission block CRC adding device add the CRC check sign indicating number, and second cutting unit 108 carries out the cutting operation of code block then.If Link State is poor, then 105 pairs of transmission data blocks of first cutting unit carry out cutting apart of code block, and code block CRC adding device 107 is respectively each code block interpolation CRC check sign indicating number then.
At step S205, the chnnel coding unit 109 of base station sends to subscriber equipment through wireless channel after each code block is carried out chnnel coding.
At step S206, the Link State that subscriber equipment receives according to Link State receiving element 203 carries out the CRC error detection.
If Link State is good, then first merge cells 206 directly merges each code block that receives, and the data block after transmission block CRC error detection unit 208 is combined is then carried out the CRC error detection.
If Link State is poor, then code block CRC error detection unit 205 carries out the CRC error detection to the code block that receives respectively, obtains receiving data block by the merging of carrying out code block after second merge cells, the 207 removal CRC error detection codes again.
205 check under the situation about making mistake, to HARQ unit 201 misdirections in transmission block CRC error detection unit 208 or code block error detection unit.
At step S207, the HARQ unit 201 of subscriber equipment according to CRC error detection result by feedback channel to base station feedback ACK/NACK information.
At step S208, the HARQ processing unit 101 of base station carries out the corresponding retransmission operation according to Link State and the feedback information that receives.For example, the feedback information of receiving in the base station is under the situation of NACK, if Link State is good, then retransmits whole transmission data block, if Link State is poor, then the code block of makeing mistakes of NACK indication is retransmitted.
Like this, to step S208, can guarantee normal operation by circulation execution in step S201 with base station and subscriber equipment.
Fig. 4 shows the detail flowchart according to the self adaptation CRC check method of third embodiment of the invention.
As shown in Figure 4, at step S301, the base station sends Link State decision rule to subscriber equipment.For example, this decision rule can be set in advance for system, sends once before transfer of data begins.This decision rule can also the dynamic cycle or irregular transmission.This decision rule can send to receiver by the mode of broadcasting or with means of signaling.
At step S302, the Link State acquiring unit 103 contribution link information of base station are so that adjudicated Link State according to decision rule by decision device 104.This link information can comprise CQI information, subscriber equipment translational speed information, NACK indication statistical information and the transport block size information of link.
Simultaneously, at step S303, the Link State receiving element 203 of subscriber equipment and selector 204 carry out the identical operations with step S302.
At step S304, the CRC check operation is carried out according to Link State in the base station.If Link State is good, then transmission block CRC adding device 106 adds the CRC check sign indicating number to its transmission data block, and second cutting unit 108 carries out the cutting operation of code block then.If Link State is poor, then 105 pairs of transmission data blocks of first cutting unit carry out cutting apart of code block, and code block CRC adding device 107 is respectively each code block interpolation CRC check sign indicating number then.
At step S305, the base station sends to subscriber equipment through wireless channel after each code block is carried out chnnel coding.
At step S306, subscriber equipment carries out the CRC error detection according to the Link State of judgement.If Link State is good, then first merge cells 206 merges each code block that receives, and the data block after transmission block CRC error detection unit 208 is combined is carried out the CRC error detection.If Link State is poor, then code block CRC error detection unit 205 carries out the CRC error detection to the code block that receives respectively, obtains receiving data block by the merging of carrying out code block after second merge cells, the 207 removal CRC error detection codes again.
At step S307, subscriber equipment according to CRC error detection result by feedback channel to base station feedback ACK/NACK information.
At step S308, the corresponding retransmission operation is carried out according to Link State and the feedback information that receives in the base station.The feedback information that receive the base station is NACK, if Link State is good, then retransmits whole transmission data block, if Link State is poor, then the code block of makeing mistakes of NACK indication is retransmitted.
Like this, to step S309, guarantee the normal operation of base station and subscriber equipment by circulation execution in step S301.
Fig. 5 shows the detail flowchart according to the self adaptation CRC check method of fourth embodiment of the invention.
As shown in Figure 5, at step S401, the setting Link State decision rule of static state in base station and subscriber equipment.
At step S402, the Link State acquiring unit 103 contribution link information of base station are adjudicated Link State according to the decision rule of prior setting.This link information can comprise CQI information, subscriber equipment translational speed information, NACK indication statistical information and the transport block size information of link.
At step S403, the Link State receiving element 203 contribution link information of subscriber equipment are adjudicated Link State according to the decision rule that realizes setting.This link information can comprise CQI information, subscriber equipment translational speed information, NACK indication statistical information and the transport block size information of link.
At step S404, the Link State that the base station obtains according to judgement carries out the CRC check operation.If Link State is good, then transmission block CRC adding device 106 adds the CRC check sign indicating number to its transmission data block, and second cutting unit 108 carries out the cutting operation of code block then.If Link State is poor, then 105 pairs of transmission data blocks of first cutting unit carry out cutting apart of code block, and code block CRC adding device is respectively each code block interpolation CRC check sign indicating number then.
At step S405, the chnnel coding unit 109 of base station sends to subscriber equipment through wireless channel after each code block is carried out chnnel coding.
At step S406, subscriber equipment carries out the CRC error detection according to the Link State that judgement obtains.If Link State is good, then first merge cells 206 merges each code block that receives, and the data block after being combined by transmission block CRC error detection unit 208 is carried out the CRC error detection.If Link State is poor, then code block CRC error detection unit 205 carries out the CRC error detection to the code block that receives respectively, obtains receiving data block by the merging of carrying out code block after second merge cells, the 207 removal CRC error detection codes again.
At step S407, subscriber equipment according to CRC error detection result by feedback channel to base station feedback ACK/NACK information.
At step S408, the corresponding retransmission operation is carried out according to Link State and the feedback information that receives in the base station.The feedback information that receive the base station is NACK, if Link State is good, then retransmits whole transmission data block, if Link State is poor, then the code block of makeing mistakes of NACK indication is retransmitted.
Like this, to step S408, can guarantee the normal operation of base station and subscriber equipment by circulation execution in step S401.
The above; only be the embodiment among the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with the people of this technology in the disclosed technical scope of the present invention; the conversion that can expect easily or replacement all should be encompassed in of the present invention comprising within the scope.Therefore, protection scope of the present invention should be as the criterion with the protection range of claims.
Claims (28)
1. self adaptation CRC check sign indicating number adding method comprises step:
Obtain link-state information;
Adjudicate the represented state of described link-state information; And
According to described court verdict the transmission data that will launch are added the CRC check code operations.
2, the method for claim 1, wherein the step of the transmission data that will launch being added the CRC check code operations according to described court verdict comprises:
If described link-state information is represented first state, the transmission data block interpolation CRC check sign indicating number to described transmission data is divided into code block with described transmission data block then; And
If described link-state information is represented second state, described transmission data block is divided into code block, be respectively each described code block then and add the CRC check sign indicating number.
3, the method for claim 1, the wherein said step of obtaining link-state information comprises:
From transmitter receiving link status information.
4, the step of the represented state of the described link-state information of the method for claim 1, wherein described judgement comprises:
According in transmitter and receiver, setting Link State decision rule in advance Link State is adjudicated.
5, the method for claim 1, the step of the state that the described link-state information of wherein said judgement is represented comprises:
Link State decision rule according to prior setting is adjudicated Link State; And
Send described link-state information with signaling method to receiver.
6, the method for claim 1, wherein said link information comprise CQI information, subscriber equipment translational speed information, NACK indication statistical information and transmission data block length information one of at least.
7, method as claimed in claim 6, wherein said NACK indication statistical information comprise in the ratio of the frequency of number of times, link feedback NACK of link feedback NACK and NACK number of feedback and feeding back ACK number of times one of at least.
8, the method for claim 1, wherein transmitter periodically sends link-state information to receiver.
9, the method for claim 1, wherein receiver periodically sends link-state information to transmitter.
10, the method for claim 1, wherein transmitter paroxysmally sends link-state information to receiver when sending Link State and change.
11, the method for claim 1, wherein receiver paroxysmally sends link-state information to transmitter when sending Link State and change.
12, a kind of self adaptation CRC check method comprises step:
Obtain link-state information;
Adjudicate the represented state of described link-state information; And
According to described court verdict the transmission data that receive are carried out the CRC check operation.
13, method as claimed in claim 12, wherein, described step of the transmission data that receive being carried out the CRC check operation according to described court verdict comprises:
If described link-state information is represented first state, the code block of the transmission data that receive is merged into transmission data block, and described transmission data block is carried out the CRC error detection; And
If described link-state information is represented second state, the code block of the transmission data that receive is carried out the CRC error detection respectively, after being removed the CRC check sign indicating number, described code block remerges into transmission data block.
14, method as claimed in claim 12, the wherein said step of obtaining link-state information comprises:
From transmitter receiving link status information.
15, method as claimed in claim 12, wherein, the step of the state that the described link-state information of described judgement is represented comprises:
According in transmitter and receiver, setting Link State decision rule in advance Link State is adjudicated.
16, method as claimed in claim 12, the step of the state that the described link-state information of wherein said judgement is represented comprises:
Link State decision rule according to prior setting is adjudicated Link State; And send described link-state information to transmitter with signaling method.
17, method as claimed in claim 12, wherein said link information comprise CQI information, subscriber equipment translational speed information, NACK indication statistical information and transmission data block length information one of at least.
18, method as claimed in claim 17, wherein said NACK indication statistical information comprise in the ratio of the frequency of number of times, link feedback NACK of link feedback NACK and NACK number of feedback and feeding back ACK number of times one of at least.
19, method as claimed in claim 12, wherein transmitter periodically sends link-state information to receiver.
20, method as claimed in claim 12, wherein receiver periodically sends link-state information to transmitter.
21, method as claimed in claim 12, wherein transmitter paroxysmally sends link-state information to receiver when sending Link State and change.
22, method as claimed in claim 12, wherein receiver paroxysmally sends link-state information to transmitter when sending Link State and change.
23. a transmitter apparatus comprises:
The link-state information acquiring unit is used to obtain link-state information;
Decision unit is adjudicated the represented state of described link-state information; And
CRC check sign indicating number adding device adds the CRC check code operations according to described court verdict to the transmission data that will launch.
24, transmitter apparatus as claimed in claim 23, wherein, if described link-state information is represented first state, described CRC check sign indicating number adding device comprises:
Transmission block CRC check sign indicating number adds part, to the transmission data block interpolation CRC check sign indicating number of described transmission data; And
Partitioning portion is divided into code block with described transmission data block.
25, transmitter apparatus as claimed in claim 23; Wherein, if described link-state information is represented second state, described CRC check sign indicating number adding device comprises:
Partitioning portion is divided into code block with described transmission data block; And
Code block CRC check sign indicating number adds part, is respectively each described code block and adds the CRC check sign indicating number.
26, a kind of receiver device comprises:
The link-state information receiving element obtains link-state information;
Decision unit is adjudicated the represented state of described link-state information; And
The CRC check unit carries out the CRC check operation according to described court verdict to the transmission data that receive.
27, receiver device as claimed in claim 26, wherein, if described link-state information is represented first state, described CRC check unit comprises:
Assembling section is merged into transmission data block with the code block of the transmission data that receive; And
Transmission block CRC check part is carried out the CRC error detection to described transmission data block.
28, receiver device as claimed in claim 26, wherein, if described link-state information is represented second state, described CRC check unit comprises:
Code block CRC check part is carried out the CRC error detection respectively to the code block of the transmission data that receive; And
Assembling section is to remerging into transmission data block behind the described code block removal CRC check sign indicating number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100089804A CN101499876A (en) | 2008-02-02 | 2008-02-02 | Method and apparatus for adaptively executing CRC check in wireless link |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100089804A CN101499876A (en) | 2008-02-02 | 2008-02-02 | Method and apparatus for adaptively executing CRC check in wireless link |
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| CN101499876A true CN101499876A (en) | 2009-08-05 |
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| WO2010148691A1 (en) * | 2009-11-18 | 2010-12-29 | 中兴通讯股份有限公司 | Method, device and system for self-adaptive retransmission |
| WO2011063550A1 (en) * | 2009-11-26 | 2011-06-03 | 上海贝尔股份有限公司 | Channel decoding method and device thereof |
| CN102111254A (en) * | 2010-04-30 | 2011-06-29 | 电信科学技术研究院 | Feedback information transmission method and user equipment |
| CN102572705A (en) * | 2010-12-27 | 2012-07-11 | 上海贝尔股份有限公司 | User feedback-based scheduling method and equipment in multicast system and multicast system |
| WO2012092833A1 (en) * | 2011-01-06 | 2012-07-12 | 华为技术有限公司 | Method, base station and system for managing resources |
| WO2015154642A1 (en) * | 2014-08-21 | 2015-10-15 | 中兴通讯股份有限公司 | Method, base station, and terminal for wireless link processing |
| WO2017121275A1 (en) * | 2016-01-15 | 2017-07-20 | 中兴通讯股份有限公司 | Scheduling method, scheduler and network access device |
| WO2018059066A1 (en) * | 2016-09-27 | 2018-04-05 | Qualcomm Incorporated | Encoding and decoding techniques |
| CN109150413A (en) * | 2017-06-16 | 2019-01-04 | 华为技术有限公司 | The method and apparatus for sending and receiving feedback information |
| CN110431875A (en) * | 2017-02-01 | 2019-11-08 | 株式会社Ntt都科摩 | User terminal and wireless communications method |
| CN114337922A (en) * | 2021-12-27 | 2022-04-12 | 合肥联信电源有限公司 | Uninterrupted power source with wireless data transmission function |
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| WO2010148691A1 (en) * | 2009-11-18 | 2010-12-29 | 中兴通讯股份有限公司 | Method, device and system for self-adaptive retransmission |
| WO2011063550A1 (en) * | 2009-11-26 | 2011-06-03 | 上海贝尔股份有限公司 | Channel decoding method and device thereof |
| CN102111254A (en) * | 2010-04-30 | 2011-06-29 | 电信科学技术研究院 | Feedback information transmission method and user equipment |
| CN102111254B (en) * | 2010-04-30 | 2014-11-19 | 电信科学技术研究院 | Feedback information transmission method and user equipment |
| CN102572705B (en) * | 2010-12-27 | 2015-05-13 | 上海贝尔股份有限公司 | User feedback-based scheduling method and equipment in multicast system and multicast system |
| CN102572705A (en) * | 2010-12-27 | 2012-07-11 | 上海贝尔股份有限公司 | User feedback-based scheduling method and equipment in multicast system and multicast system |
| US9301162B2 (en) | 2011-01-06 | 2016-03-29 | Huawei Technologies Co., Ltd. | Method, base station and system for managing resources |
| WO2012092833A1 (en) * | 2011-01-06 | 2012-07-12 | 华为技术有限公司 | Method, base station and system for managing resources |
| WO2015154642A1 (en) * | 2014-08-21 | 2015-10-15 | 中兴通讯股份有限公司 | Method, base station, and terminal for wireless link processing |
| US10362155B2 (en) | 2014-08-21 | 2019-07-23 | Zte Corporation | Method, base station, and terminal for wireless link processing |
| WO2017121275A1 (en) * | 2016-01-15 | 2017-07-20 | 中兴通讯股份有限公司 | Scheduling method, scheduler and network access device |
| WO2018059066A1 (en) * | 2016-09-27 | 2018-04-05 | Qualcomm Incorporated | Encoding and decoding techniques |
| US11211946B2 (en) | 2016-09-27 | 2021-12-28 | Qualcomm Incorporated | Encoding and decoding techniques |
| CN110431875A (en) * | 2017-02-01 | 2019-11-08 | 株式会社Ntt都科摩 | User terminal and wireless communications method |
| CN110431875B (en) * | 2017-02-01 | 2023-04-25 | 株式会社Ntt都科摩 | User terminal and wireless communication method |
| CN109150413A (en) * | 2017-06-16 | 2019-01-04 | 华为技术有限公司 | The method and apparatus for sending and receiving feedback information |
| CN114337922A (en) * | 2021-12-27 | 2022-04-12 | 合肥联信电源有限公司 | Uninterrupted power source with wireless data transmission function |
| CN114337922B (en) * | 2021-12-27 | 2023-11-14 | 合肥联信电源有限公司 | Uninterruptible power supply with wireless data transmission function |
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Application publication date: 20090805 |