CN102571266A - Method and device for checking cyclic redundancy of transmission block - Google Patents
Method and device for checking cyclic redundancy of transmission block Download PDFInfo
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- CN102571266A CN102571266A CN2011100006396A CN201110000639A CN102571266A CN 102571266 A CN102571266 A CN 102571266A CN 2011100006396 A CN2011100006396 A CN 2011100006396A CN 201110000639 A CN201110000639 A CN 201110000639A CN 102571266 A CN102571266 A CN 102571266A
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Abstract
The embodiment of the invention provides a method and device for checking cyclic redundancy of a transmission block. The method comprises the steps of: receiving the transmission block sent by an upper level; carrying out cyclic redundancy check (CRC) code calculation on partial data in the transmission block, and obtaining CRC checking information; attaching the CRC checking information to the transmission block; and sending the transmission block attached with the CRC checking information to a receiving end. According to the invention, through importance difference of different data included by one transmission block, when the CRC calculation is carried out on the transmission block, one part of important data in the transmission block is subjected to CRC calculation, thus unnecessary retransmission caused by unimportant data transmission faults in the transmission block is reduced, retransmission times are reduced, and network resources are saved.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of method of transport block cyclic redundancy check and device.
Background technology
At WCDMA (WCDMA; Wideband Code Division Multiple Access) in the system; In order to improve message transmission rate, introduced high speed downlink packet access (HSDPA, High SpeedDownlink Packet Access) technology and high speed uplink packet and inserted (High Speed Uplink PacketAccess; HSUPA) technology, said HSDPA and HSUPA are referred to as HSPA.
Through HSPA bearer service data the time; CS voice in the WCDMA system generally are to adopt AMR (AMR, Adaptive Multi-Rate) coding, encode the speech into three substreams; Three substreams are represented the different importance of information in the speech coding; And different mistake tolerances, every substreams need use different service quality (QoS, Quality of Service) to guarantee.In three substreams, A is most important for son stream, and secondly son flows B, and C is least important for son stream.Need higher correctness during son stream A interface transmission aloft.
Because the CS speech business can be carried on the HSPA (CS over HSPA); Adopted mixed automatic repeat request (HARQ among the HSPA; Hybrid Automatic Repeat Request) in this process; ABC three substreams of AMR speech frame just are integrated into together at the PDCP layer, are delivered to physical layer, carry through a transmission block.Physical layer comprises that to this transmission block of A, B, C stream carries out CRC (CRC, Cyclic Redundancy Check) and calculates and append to data block, sends through after the chnnel coding; After receiving terminal carries out channel-decoding, the data block that obtains is carried out that same CRC calculates and compared with additional CRC, if equate; Show to receive correctly that receiving terminal returns affirmation (ACK, Acknowledgement) signal; If it is unequal; Show the reception mistake, receiving terminal returns does not confirm (NACK, Not Acknowledge) signal.Receive ack signal when making a start, just send new data, otherwise resend data packets for transmission last time.
In the existing implementation,, therefore, will cause whole AMR speech frame to retransmit, cause the waste of transfer resource when the CRC check mistake of this transmission block because three substreams of AMR speech frame are incorporated in a transport block transmission in physical layer.
Summary of the invention
The embodiment of the invention provides a kind of method and device of transport block cyclic redundancy check, to solve the number of retransmissions problem of higher of transmission block, saves Internet resources.
For solving the problems of the technologies described above, the embodiment of the invention provides a kind of transport block cyclic redundancy check method, and said method comprises:
Receive the high-rise transmission block that sends;
Partial data in the said transmission block is carried out CRC CRC calculate, obtain CRC check information;
With said CRC check information with said transmission block attached to, and will adhere to said CRC check transmission of Information piece and send to receiving terminal.
The embodiment of the invention also provides a kind of transport block cyclic redundancy check method, and said method comprises:
Confirm the size of said transmission block;
Data to receiving are decoded, and obtain a transmission block and a CRC checking information;
If it is pre-conditioned to judge that the size of said transmission block satisfies, then obtain the partial data in the said transmission block;
Said partial data is carried out CRC CRC calculate, obtain the second CRC check information;
If judge that the first CRC check information equates with the second CRC check information, confirm that then transmission is correct, feedback acknowledgment is replied.
The embodiment of the invention provides a kind of method of transport block cyclic redundancy check again, and said method comprises:
Confirm the size of said transmission block;
Data to receiving are decoded, and obtain a transmission block and a CRC checking information;
Satisfy when pre-conditioned if judge the size of said transmission block, then whole transmission block is carried out CRC and calculate, obtain the second CRC check information;
If judge that said second a CRC check information and a CRC checking information are unequal, then obtain the partial data in the said transmission block;
Said partial data is carried out CRC CRC calculate, obtain the 3rd CRC check information;
If judge that the first CRC check information equates with the 3rd CRC check information, confirm that then said transmission is correct, feedback acknowledgment is replied.
Accordingly, the embodiment of the invention provides a kind of device of transport block cyclic redundancy check, and said device comprises:
Receiving element is used to receive the high-rise transmission block that sends;
Verification unit is used for the partial data of said transmission block is carried out CRC CRC calculating, obtains CRC check information;
Adhesion unit, be used for said CRC check information with said transmission block attached to;
Transmitting element is used for sending to receiving terminal with adhering to said CRC check transmission of Information piece.
The embodiment of the invention also provides a kind of transport block cyclic redundancy check device, and said device comprises:
Confirm the unit, confirm the size of said transmission block;
Decoding unit is used for the data that receive are decoded, and obtains a transmission block and a CRC checking information;
Acquiring unit is used for satisfying when pre-conditioned in the size of judging said transmission block, obtains the partial data in the said transmission block;
First verification unit is used for that said partial data is carried out CRC CRC and calculates, and obtains the second CRC check information;
First feedback unit is used for when judging that the first CRC check information equates with the second CRC check information, confirms that transmission is correct, and feedback acknowledgment is replied.
The embodiment of the invention provides a kind of device of transport block cyclic redundancy check again, and said device comprises:
Confirm the unit, be used for confirming the size of said transmission block;
Decoding unit is used for the data that receive are decoded, and obtains a transmission block and a CRC checking information;
First verification unit is used for satisfying when pre-conditioned in the size of judging said transmission block, whole transmission block is carried out CRC calculate, and obtains the second CRC check information;
Acquiring unit is used for obtaining the partial data in the said transmission block judging that said second a CRC check information and a CRC checking information are unequal;
Second verification unit is used for that said partial data is carried out CRC CRC and calculates, and obtains the 3rd CRC check information;
Feedback unit is used for when judging that the said first CRC check information equates with the 3rd CRC check information, confirming that said transmission is correct that feedback acknowledgment is replied.
Can know by the foregoing description; In the embodiment of the invention, different through the importance of different pieces of information that a transmission block is comprised, when the CRC to this transmission block calculates; Select a part of significant data wherein of this transmission block to carry out CRC calculating; Reduced because the unnecessary re-transmission that inessential data transmission fault causes in the transmission block reduces number of retransmissions, saved Internet resources.
Description of drawings
The flow chart of the method for a kind of transport block cyclic redundancy check that Fig. 1 provides for the embodiment of the invention 1;
The flow chart of the method for a kind of transport block cyclic redundancy check that Fig. 2 provides for the embodiment of the invention 2;
The flow chart of the method for a kind of transport block cyclic redundancy check that Fig. 3 provides for the embodiment of the invention 3;
The flow chart of first application example of the method for a kind of transport block cyclic redundancy check that Fig. 4 provides for the embodiment of the invention 4;
The flow chart of second application example of the method for a kind of transport block cyclic redundancy check that Fig. 5 provides for the embodiment of the invention 5;
The structural representation of the device of a kind of transport block cyclic redundancy check that Fig. 6 provides for the embodiment of the invention 1;
The structural representation of the device of a kind of transport block cyclic redundancy check that Fig. 7 provides for the embodiment of the invention 2;
The structural representation of the device of a kind of transport block cyclic redundancy check that Fig. 8 provides for the embodiment of the invention 3.
Embodiment
In order to make those skilled in the art person understand the scheme of the embodiment of the invention better, the embodiment of the invention is done further to specify below in conjunction with accompanying drawing and execution mode.
See also Fig. 1, the flow chart of the method for a kind of transport block cyclic redundancy check that provides for the embodiment of the invention 1, said method comprises:
101: receive the high-rise transmission block that sends;
Wherein, This high level can be packet data convergence protocol (PDCP, Packet Data ConvergenceProtocol) layer, Radio Link control (RLC, Radio Link Control) layer, medium access control (MAC; Mdium Access Control) layer etc. but is not limited to this.
102: the partial data in the said transmission block is carried out CRC (CRC, cyclicredundancy check code) calculate, obtain CRC check information; Wherein, Partial data in the said transmission block can be the data of some bit numbers with definite starting and ending position; 5 bits that begin such as the original position from said transmission block, 10 bits or 20 are than top grade, the significant data that just carries in this transmission block etc., but be not limited to this.
103: with said CRC check information with said transmission block attached to, and will adhere to said CRC check transmission of Information piece and send to receiving terminal.
In the embodiment of the invention; Importance through different pieces of information that a transmission block is comprised is different; When again this transmission block loaded information being carried out CRC calculating, select a part of significant data in this transmission block to carry out CRC calculating, reduced the re-transmission of the whole transmission block that causes because of the non-significant data error of transmission in the transmission block; Thereby reduced number of retransmissions, saved transfer resource.
Preferably, said method can also comprise: if confirm that data carried by data is AMR (AMR, an Adaptive Multi Rate) speech frame in the said transmission block, then obtain the sub-flow data of A in the said AMR speech frame at least;
Wherein, the sub-flow data of A that obtains at least in the said AMR speech frame comprises: the number of coded bits of calculating said AMR speech frame according to the size of said transmission block; Confirm corresponding codes structure type number according to the number of coded bits of said AMR speech frame; Confirm the bit number of said A stream according to said coding structure style number.For descending, can perhaps strengthen the bit number that dedicated channel E-DCH (Enhanced Dedicated Channel) transmission block table and AMR coded data distribution table can be confirmed said A stream according to high speed downlink shared channel HS-DSCH (HighSpeed Downlink Shared Channel) the transmission block table of storage.For up, can confirm the bit number of said A stream according to strengthening dedicated channel E-DCH (EnhancedDedicated Channel) transmission block table and AMR coded data distribution table, but be not limited to this.
Saidly partial data in the said transmission block is carried out CRC CRC calculate, obtain CRC check information and be: the sub-flow data of said A is carried out CRC CRC calculate, obtain CRC check information.
Wherein, confirm that data carried by data is that AMR AMR speech frame specifically comprises in the said transmission block: data carried by data is the notice of AMR speech frame in the high-rise said transmission block that sends of reception; Confirm that according to said notice data carried by data is the AMR speech frame in the said transmission block.
That is to say; In this embodiment; Carry data instance with HS-DSCH, packet data convergence protocol PDCP layer lumps together ABC three substreams and forms the receiving terminal that a transmission block passes to physical layer, and high-rise simultaneously these data of receiving terminal through indication notice physical layer are the AMR speech frame; The receiving terminal of physical layer is according to transmission block size and AMR (AMR; Adaptive Multi Rate) coded data distribution table (table 1) and HS-DSCH transmission block table (table 2) can be confirmed the bit number of said A stream, and carry out adhering to of CRC bit, and send the said transmission block after adhering to.
Table 1 is at present to the A stream (Class A) of the AMR speech data of various type of codings, the data distribution of B stream Class B and C stream (Class C):
Table 1:AMR coded data distributes
One of form that the transmission block that table 2 possibly adopt for HS-DSCH is big or small; Add after PDCP, RLC, the added header of each layer of MAC according to the information bit of various AMR speech codings in the table 1; The data block length that passes to physical layer will be mapped to transmission block according to table 2, and the AMR number of speech frames that therefore passes to physical layer has one-to-one relationship according to the transmission block size shown in block length and the table 2.
Table 2HS-DSCH transmission block form
In the embodiment of the invention; Importance through different pieces of information that a transmission block is comprised is different; When the CRC to this transmission block calculates, select a part of significant data wherein of this transmission block to carry out CRC calculating, reduced because the unnecessary re-transmission that inessential data transmission fault causes in the transmission block; Reduce number of retransmissions, save Internet resources.
Also see also Fig. 2, the flow chart of a kind of transport block cyclic redundancy check method that provides for the embodiment of the invention 2, said method comprises:
201: the size (TBS, Transport Block Set) of confirming said transmission block;
A kind of definite mode is: directly receive the fast size of said transmission that control channel sends; For descending; Said control channel can comprise: high speed descending sharing channel (HS-DSCH; High SpeedDownlink Shared Channel), HS-DSCH shared control channel (HS-SCCH, Shared ControlChannel for HS-DSCH); For up, said control channel can be to strengthen dedicated channel E-DCH etc.
Another kind of definite mode is: according to the big or small blind Detecting data channel of pre-configured transmission block; Such as; Following behavior example can detect high-speed physical downlink shared channel (HS-PDSCH) (HS-PDSCH, High SpeedPhysical Downlink Shared Channel) etc.; And the transmission block that blind check is measured is confirmed the size of said transmission block through CRC check.But be not limited to this.
If the transmission block data carried by data is the AMR speech frame, then the big or small blind Detecting data channel according to pre-configured transmission block is specially: the big or small blind Detecting data channel of the transmission block that adopts of the AMR of institute speech frame then.But be not limited to this, can also comprise other definite mode, the embodiment of the invention does not limit.
202: the data to receiving are decoded, and obtain a transmission block and a CRC checking information;
Specifically can decode, obtain a transmission block and a CRC checking information the data that receive from high-speed physical downlink shared channel (HS-PDSCH) HS-PDSCH.
201 and 202 do not have sequencing in time, can carry out simultaneously yet, can successively carry out yet.
203:, then obtain the partial data in the said transmission block if it is pre-conditioned to judge that the size of said transmission block satisfies; Wherein, this partial data is the significant data that carries in the transmission block.
Wherein, be the size that satisfies the transmission block of AMR AMR speech frame employing if satisfy pre-conditioned, then obtain the A stream in the said transmission block at least;
204: said partial data is carried out CRC CRC calculate, obtain the second CRC check information; Wherein, said partial data can be the A stream that obtains at least in the said transmission block, but is not limited to this.
205: if judge that the first CRC check information equates with the second CRC check information, confirm that then said transmission is correct, feedback acknowledgment is replied.
Preferably, said method can also comprise: if the judgement first CRC check information and the second CRC check information are unequal, then whole transmission block are carried out CRC and calculate, obtain the 3rd CRC check information;
If judge that said the 3rd CRC check information equates with a CRC checking information, confirm that then transmission is correct, feedback acknowledgment is replied; Otherwise error of transmission is fed back non-affirmation and is replied.
Preferably, said method can also comprise:
Do not satisfy the transmission block size that AMR AMR speech frame is adopted if judge said transmission block size, then whole transmission block is carried out CRC and calculate, obtain the 4th CRC check information;
If judge that said the 4th CRC check information equates with the first CRC check information, confirm that then transmission is correct, feedback acknowledgment is replied; Otherwise, then confirm error of transmission, feed back non-affirmation and reply.
Also see also Fig. 3, the flow chart of the method for a kind of transport block cyclic redundancy check that provides for the embodiment of the invention 3, said method comprises:
301: the size of confirming said transmission block;
302: the data to receiving are decoded, and obtain a transmission block and a CRC checking information;
Wherein, 301 and 302 do not have sequencing in time, can carry out simultaneously yet, can successively carry out yet, and this enforcement does not limit.
303: satisfy when pre-conditioned if judge the size of said transmission block, then whole transmission block is carried out CRC and calculate, obtain the second CRC check information;
304:, then obtain the partial data in the said transmission block if said second a CRC check information of judgement and a CRC checking information are unequal;
305: said partial data is carried out CRC CRC calculate, obtain the 3rd CRC check information;
306: if judge that the first CRC check information equates with the 3rd CRC check information, confirm that then said transmission is correct, feedback acknowledgment is replied.
Preferably, in this embodiment, if judge that it is the size that satisfies the transmission block of AMR AMR speech frame employing that the size of said transmission block satisfies pre-conditioned; The partial data that then obtains in the said transmission block is: obtain the sub-flow data of A in the said transmission block at least; Saidly said partial data is carried out CRC CRC be calculated as: the sub-flow data of said A is carried out CRC CRC calculate, obtain the 3rd CRC check information.
Concrete implementation procedure based on Fig. 2 and Fig. 3 sees Fig. 4 and Fig. 5 for details:
Also see also Fig. 4; First application example of a kind of method for transport block cyclic redundancy check that provides for the embodiment of the invention 4; Among this embodiment; It is pre-conditioned that the size of said transmission block satisfies is example with the size that satisfies the transmission block that AMR AMR speech frame adopts, and what then obtain partial data in the said transmission block is example with what obtain the sub-flow data of A in the said transmission block at least.A kind of processing procedure for receiving terminal is:
401: confirm transmission block size TBS information; Wherein, the mode of confirming said TBS information comprises:
A kind of mode is: can carry by control channel, and like HS-SCCH, E-DPCCH, promptly receiving terminal receives the TBS information of control channel transmission.
Another kind of mode; For HS-SCCH less pattern or E-DPCCH; Because HS-SCCH or E-DPCCH channel do not send when just passing, receiving terminal can detect data channel HS-PDSCH or E-DPDCH according to pre-configured TBS information, and promptly receiving terminal is according to several kinds of TBS information blind Detecting data channel HS-PDSCH or the E-DPDCH of configuration; Judging the TBS that this transmission block uses through verification to CRC; Such as four kinds of TBS of configuration, possibly need four CRC checks, could from check results, confirm the TBS that this transmission block uses.
When having one of the TBS that possibly adopt to equate among the pre-configured TBS with the AMR speech frame; When the TBS that equates at one of TBS that uses these and AMR speech frame to adopt detects the HS-PDSCH channel; When CRC check, need the A stream of the extraction of verification simultaneously and the CRC of whole transmission block; And with data channel in detected CRC compare; As equating that with one of them of the CRC of A stream that extracts and whole data block then the TBS of definite this transmission block detects employed TBS for this.
For example pre-configured TBS comprises four kinds of TBS1, TBS2, TBS3, TBS4; And wherein one of TBS2 and AMR speech frame TBS that possibly adopt equates; Then when using TBS2 that the HS-PDSCH channel is carried out in the blind detection process; When the transmission block that blind check is gone out carries out CRC check, need the A stream that verification simultaneously extracts and the CRC of whole transmission block, and with data channel in detected CRC compare; As equating that with one of them of the CRC of A stream that extracts and whole data block then the TBS of definite this transmission block detects employed TBS2 for this.
402: the data to receiving are decoded, and obtain transmission block and corresponding C RC0 checking information; If be descending, then receive the data of HS-PDSCH, if up, receive the data of E-DCH etc.
Wherein, 401 and 302 do not have sequencing in time, can carry out simultaneously, can successively carry out yet, and this enforcement does not limit.
403: whether the size of judging said transmission block satisfies the size of the transmission block that AMR AMR speech frame adopts, if satisfy (one of TBS that to be said TBS possibly adopt with the AMR speech frame equates), then carries out 304; Otherwise, carry out 309;
404: from transmit soon, extract A stream according to TBS;
405: said A stream is carried out CRC CRC calculate, obtain the CRC1 check information;
406: judge whether said CRC1 equates with CRC0,, then carry out 407 if equate; Otherwise, carry out 409;
407, confirm that said transmission is correct, feedback acknowledgment is replied;
408: whole transmission block is carried out CRC calculate, obtain the CRC2 check information;
409: judge whether said CRC2 equates with CRC0,, then carry out 407 if equate; Otherwise, carry out 410
410: confirm that said transmission is correct, feedback acknowledgment is replied.
In this embodiment, judge whether the size of said transmission block satisfies the size of the transmission block of AMR AMR speech frame employing, if satisfy; Earlier said A stream is carried out CRC CRC and calculate, and whether the CRC that relatively calculates equate with the CRC that receives, if equal; Reply with regard to feedback acknowledgment, otherwise, the CRC of whole transmission block calculated again; And whether the CRC that relatively calculates whole transmission block equate with the CRC that receives, if equate, replys with regard to feedback acknowledgment; Otherwise, feed back non-affirmation and reply.If do not satisfy, then calculatings need be carried out CRC to whole transmission block and calculates, and whether the CRC that relatively calculates equate with the CRC that receives, if equal, reply with regard to feedback acknowledgment, otherwise, feed back non-affirmation and reply.It is different through the importance of different pieces of information that a transmission block is comprised to be present embodiment; When the CRC of this transmission block calculates; Select a part of significant data wherein of this transmission block to carry out CRC calculating; Carry out transmission block according to this CRC and whether receive the right judgement foundation, can reduce because a part of Internet resources are saved in the unnecessary re-transmission that inessential data transmission fault causes in the transmission block.
Also see also Fig. 5; Second application example of a kind of method for transport block cyclic redundancy check that provides for the embodiment of the invention 5; Among this embodiment; It is pre-conditioned that the size of said transmission block satisfies is example with the size that satisfies the transmission block that AMR AMR speech frame adopts still, and what then obtain partial data in the said transmission block is example with what obtain the sub-flow data of A in the said transmission block at least.Another kind of processing procedure for the receiving terminal of physical layer is:
501: confirm transmission block size TBS information;
502: the data to receiving are decoded, and obtain transmission block and corresponding C RC0 checking information;
Wherein, 501 and 502 can not have sequencing in time, can carry out simultaneously yet, certainly, can confirm the size of transmission block earlier yet, the data that receive are decoded etc. again.
503: whether the size of judging said transmission block satisfies the size of the transmission block that AMR AMR speech frame adopts, if satisfy (one of TBS that to be said TBS possibly adopt with the AMR speech frame equates), then carries out 504; Otherwise, carry out 508;
504: whole transmission block is carried out CRC calculate, obtain the CRC1 check information;
505: judge whether said CRC1 equates with CRC0,, then carry out 506 if equate; Otherwise, carry out 507;
506: confirm that said transmission is correct, feedback acknowledgment is replied;
507: from transmit soon, extract A stream according to TBS;
508: said A stream is carried out CRC CRC calculate, obtain the CRC2 check information;
509: judge whether said CRC2 equates with CRC0,, then carry out 506 if equate; Otherwise, carry out 510;
510: confirm that said transmission is incorrect, feed back non-affirmation and reply.
In the embodiment of the invention, judge whether the size of said transmission block satisfies the size of the transmission block of AMR AMR speech frame employing, if satisfy; Calculate earlier the CRC of whole transmission block, and whether the CRC that relatively calculates whole transmission block equate with the CRC that receives, if equal; Reply with regard to feedback acknowledgment, otherwise, said A stream is carried out CRC CRC calculate; And whether the CRC that relatively calculates A stream equates with the CRC that receives; If equate, reply with regard to feedback acknowledgment, reply otherwise feed back non-affirmation.It is different through the importance of different pieces of information that a transmission block is comprised to be present embodiment; When the CRC of this transmission block calculates; Select a part of significant data wherein of this transmission block to carry out CRC calculating; Carry out transmission block according to this CRC and whether receive the right judgement foundation, can reduce because a part of Internet resources are saved in the unnecessary re-transmission that inessential data transmission fault causes in the transmission block.
Based on the implementation procedure of said method, the embodiment of the invention 1 also provides a kind of device of transport block cyclic redundancy check, and its structural representation sees Fig. 6 for details; Said device comprises: receiving element 61; Verification unit 62, adhesion unit 63 and transmitting element 64, wherein; Receiving element 61 is used to receive the high-rise transmission block that sends; Verification unit 62 is used for the partial data of said transmission block is carried out CRC CRC calculating, obtains CRC check information; Adhesion unit 63, be used for said CRC check information with said transmission block attached to; Transmitting element 64 is used for sending to receiving terminal with adhering to said CRC check transmission of Information piece.
Preferably, said device can also comprise: confirm unit and acquiring unit, wherein, confirm the unit, be used for confirming whether said transmission block data carried by data satisfies AMR AMR speech frame; Acquiring unit is used in the definite result who confirms the unit obtaining the sub-flow data of A in the said AMR speech frame at least when satisfying.
Wherein, said definite unit comprises: receiving element and definite subelement, and wherein, receiving element is used for receiving high-rise said transmission block data carried by data of sending the notice that is the AMR speech frame; Confirm subelement, be used for confirming that according to said notice said transmission block data carried by data is the AMR speech frame.
Preferably, said acquiring unit comprises: computing unit, code signal confirm that unit and bit number confirm the unit, and wherein, computing unit is used for calculating according to the size of said transmission block the number of coded bits of said AMR speech frame; Code signal is confirmed the unit, is used for confirming corresponding codes structure type number according to the number of coded bits of said AMR speech frame; Bit number is confirmed the unit, is used for confirming according to said coding structure style number the bit number of said A stream.
Accordingly, also see also Fig. 7, a kind of structural representation of transport block cyclic redundancy check device also is provided for the embodiment of the invention 2; Said device comprises: confirm unit 71, decoding unit 72; Acquiring unit 73, the first verification unit 74 and first feedback unit 75, wherein; The size of said transmission block is confirmed in said definite unit 72; Said decoding unit 71 is used for the data that receive are decoded, and obtains a transmission block and a CRC checking information; Said acquiring unit 73 is used for satisfying when pre-conditioned in the size of judging said transmission block, obtains the partial data in the said transmission block; Said first verification unit 74 is used for that said partial data is carried out CRC CRC and calculates, and obtains the second CRC check information; Said first feedback unit 75 is used for when judging that the first CRC check information equates with the second CRC check information, confirms that transmission is correct, and feedback acknowledgment is replied.
Preferably, said acquiring unit specifically is used for when the size of judging said transmission block satisfies transmission block that AMR AMR speech frame adopts big or small, obtaining the sub-flow data of A in the said transmission block at least.
Preferably, said device can also comprise: first judging unit, said second verification unit; Second judging unit and said second feedback unit; Wherein, first judging unit is used to judge whether the first CRC check information equates with the second CRC check information; The judged result that equates is sent to said feedback unit, unequal judged result is sent to second verification unit; Said second verification unit is used for when receiving the unequal judged result of first judging unit transmission, whole transmission block being carried out CRC calculating, and obtains the 3rd CRC check information; Second judging unit is used to judge whether said the 3rd CRC check information equates with a CRC checking information, and the judged result that equates is sent said first feedback unit, and unequal judged result is sent to second feedback unit; Said second feedback unit is used for sending non-affirmation and replying receiving second judging unit when sending unequal judged result.
Wherein, said definite unit comprises: receiving element; And/or, detecting unit and the 3rd verification unit; Wherein, receiving element is used to receive the fast size of said transmission that control channel sends; Detecting unit is used for the size according to pre-configured transmission block, the blind Detecting data channel; The size of the transmission block that specifically can be adopted according to pre-configured AMR speech frame, blind Detecting data channel (such as high-speed physical downlink shared channel (HS-PDSCH) HS-PDSCH); The 3rd verification unit, and the transmission block that blind check is measured obtains the size of said transmission block through CRC check.
Accordingly, also see also Fig. 8, a kind of structural representation of transport block cyclic redundancy check device also is provided for the embodiment of the invention 3; Said device comprises: confirm unit 82, decoding unit 81, the first verification unit 83; Acquiring unit 84, the second verification unit 85 and feedback unit 86, wherein; Confirm unit 81, be used for confirming the size of said transmission block; Decoding unit 82 is used for the data that receive are decoded, and obtains a transmission block and a CRC checking information; First verification unit 83; Be used for satisfying when pre-conditioned that (a kind of embodiment is the size that satisfies the transmission block that AMR AMR speech frame adopts in the size of judging said transmission block; But be not limited to this), then whole transmission block is carried out CRC and calculate, obtain the second CRC check information; Acquiring unit 84 is used for judging that said second a CRC check information and a CRC checking information are unequal, obtains partial data in the said transmission block (flow such as A that obtains transmission block at least etc.); Second verification unit 85 is used for that said partial data (such as the A stream that obtains transmission block at least etc.) is carried out CRC CRC and calculates, and obtains the 3rd CRC check information; Feedback unit 83 is used for when judging that the said first CRC check information equates with the 3rd CRC check information, confirming that said transmission is correct that feedback acknowledgment is replied.
Preferably, in this embodiment, said first verification unit is used for satisfying in the size of judging said transmission block and pre-conditionedly is: the size that satisfies the transmission block that AMR AMR speech frame adopts;
Said acquiring unit, the partial data that is used for obtaining said transmission block is for obtain the sub-flow data of A in the said transmission block at least;
Said second verification unit is used for that the sub-flow data of said A is carried out CRC CRC and calculates, and obtains the 3rd CRC check information.
Preferably, in the above embodiment of the present invention, part significant data in the transmission block is calculated the method for CRC; Being not limited only to the CS speech business that HSPA carries the AMR coding, also can be other business or bearing mode, perhaps other communication systems; Like LTE, WiMax, systems such as TD-SCDMA; Its implementation procedure is similar to the above embodiments, specifically sees for details above-mentionedly, is not giving unnecessary details at this.
In the embodiment of the invention; Importance through different pieces of information that a transmission block is comprised is different; When the CRC of this transmission block calculates, select a part of significant data wherein of this transmission block to carry out CRC and calculate, carry out transmission block according to this CRC and whether receive the right judgement foundation; Can reduce because a part of Internet resources are saved in the unnecessary re-transmission that inessential data transmission fault causes in the transmission block.
Also need to prove; In this article; Relational terms such as first and second grades only is used for an entity or operation are made a distinction with another entity or operation, and not necessarily requires or hint relation or the order that has any this reality between these entities or the operation.And; Term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability; Thereby make and comprise that process, method, article or the equipment of a series of key elements not only comprise those key elements; But also comprise other key elements of clearly not listing, or also be included as this process, method, article or equipment intrinsic key element.Under the situation that do not having much more more restrictions, the key element that limits by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises said key element and also have other identical element.
Through the description of above execution mode, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding; The part that technical scheme of the present invention contributes to prior art in essence in other words can be come out with the embodied of software product; This computer software product can be stored in the storage medium, like ROM/RAM, magnetic disc, CD etc., comprises that some instructions are with so that a computer equipment (can be a personal computer; Server, the perhaps network equipment etc.) carry out the described method of some part of each embodiment of the present invention or embodiment.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (21)
1. a transport block cyclic redundancy check method is characterized in that, comprising:
Receive the high-rise transmission block that sends;
Partial data in the said transmission block is carried out CRC CRC calculate, obtain CRC check information;
With said CRC check information with said transmission block attached to, and will adhere to said CRC check transmission of Information piece and send to receiving terminal.
2. method according to claim 1 is characterized in that, also comprises:
If confirm that data carried by data is an AMR AMR speech frame in the said transmission block, then obtain the sub-flow data of A in the said AMR speech frame at least;
Saidly partial data in the said transmission block is carried out CRC CRC calculate, obtain CRC check information and be: the sub-flow data of said A is carried out CRC CRC calculate, obtain CRC check information.
3. method according to claim 2 is characterized in that, data carried by data is that AMR AMR speech frame specifically comprises in said definite said transmission block:
Data carried by data is the notice of AMR speech frame in the high-rise said transmission block that sends of reception;
Confirm that according to said notice data carried by data is the AMR speech frame in the said transmission block.
4. method according to claim 2 is characterized in that, the said sub-flow data of A that obtains at least in the said AMR speech frame comprises:
Calculate the number of coded bits of said AMR speech frame according to the size of said transmission block;
Confirm the bit number of said A stream according to the number of coded bits of said AMR speech frame.
5. a transport block cyclic redundancy check method is characterized in that, comprising:
Confirm the size of said transmission block;
Data to receiving are decoded, and obtain a transmission block and a CRC checking information;
If it is pre-conditioned to judge that the size of said transmission block satisfies, then obtain the partial data in the said transmission block;
Said partial data is carried out CRC CRC calculate, obtain the second CRC check information;
If judge that the first CRC check information equates with the second CRC check information, confirm that then transmission is correct, feedback acknowledgment is replied.
6. method according to claim 5 is characterized in that, if it is pre-conditioned to judge that the size of said transmission block satisfies, the partial data that then obtains in the said transmission block specifically comprises:
Satisfy the size of the transmission block of AMR AMR speech frame employing if judge the size of said transmission block, then obtain the sub-flow data of A in the said transmission block at least.
7. according to claim 5 or 6 described methods, it is characterized in that said method also comprises:
If judge that the first CRC check information and the second CRC check information are unequal, then whole transmission block is carried out CRC and calculate, obtain the 3rd CRC check information;
If judge that said the 3rd CRC check information equates with a CRC checking information, confirm that then transmission is correct, feedback acknowledgment is replied; Otherwise error of transmission is fed back non-affirmation and is replied.
8. according to claim 5 or 6 described methods, it is characterized in that said method also comprises:
Do not satisfy the transmission block size that AMR AMR speech frame is adopted if judge said transmission block size, then whole transmission block is carried out CRC and calculate, obtain the 4th CRC check information;
If judge that said the 4th CRC check information equates with the first CRC check information, confirm that then transmission is correct, feedback acknowledgment is replied; Otherwise, then confirm error of transmission, feed back non-affirmation and reply.
9. according to claim 5 or 6 described methods, it is characterized in that the size of said definite said transmission block comprises:
Receive the fast size of said transmission that control channel sends; Perhaps
According to the size of pre-configured transmission block, the blind Detecting data channel, and, confirm the size of said transmission block according to the CRC check that the transmission block that blind check is measured carries out.
10. the method for a transport block cyclic redundancy check is characterized in that, comprising:
Confirm the size of said transmission block;
Data to receiving are decoded, and obtain a transmission block and a CRC checking information;
Satisfy when pre-conditioned if judge the size of said transmission block, then whole transmission block is carried out CRC and calculate, obtain the second CRC check information;
If judge that said second a CRC check information and a CRC checking information are unequal, then obtain the partial data in the said transmission block;
Said partial data is carried out CRC CRC calculate, obtain the 3rd CRC check information;
If judge that the first CRC check information equates with the 3rd CRC check information, confirm that then said transmission is correct, feedback acknowledgment is replied.
11. method according to claim 10 is characterized in that, said satisfy pre-conditioned for satisfying the size of the transmission block that AMR AMR speech frame adopts;
The said partial data that obtains in the said transmission block is the sub-flow data of A that obtains at least in the said transmission block;
Saidly said partial data is carried out CRC CRC be calculated as: the sub-flow data of said A is carried out CRC CRC calculate, obtain the 3rd CRC check information.
12. the device of a transport block cyclic redundancy check is characterized in that, comprising:
Receiving element is used to receive the high-rise transmission block that sends;
Verification unit is used for the partial data of said transmission block is carried out CRC CRC calculating, obtains CRC check information;
Adhesion unit, be used for said CRC check information with said transmission block attached to;
Transmitting element is used for sending to receiving terminal with adhering to said CRC check transmission of Information piece.
13. device according to claim 12 is characterized in that, also comprises:
Confirm the unit, be used for confirming whether said transmission block data carried by data satisfies AMR AMR speech frame;
Acquiring unit is used in the definite result who confirms the unit obtaining the sub-flow data of A in the said AMR speech frame at least when satisfying.
14. device according to claim 13 is characterized in that, said definite unit comprises:
Receiving element is used for receiving high-rise said transmission block data carried by data of sending the notice that is the AMR speech frame;
Confirm subelement, be used for confirming that according to said notice said transmission block data carried by data is the AMR speech frame.
15. device according to claim 13 is characterized in that, said acquiring unit comprises:
Computing unit is used for calculating according to the size of said transmission block the number of coded bits of said AMR speech frame;
Code signal is confirmed the unit, is used for confirming corresponding codes structure type number according to the number of coded bits of said AMR speech frame;
Bit number is confirmed the unit, is used for confirming according to said coding structure style number the bit number of said A stream.
16. a transport block cyclic redundancy check device is characterized in that, comprising:
Confirm the unit, confirm the size of said transmission block;
Decoding unit is used for the data that receive are decoded, and obtains a transmission block and a CRC checking information;
Acquiring unit is used for satisfying when pre-conditioned in the size of judging said transmission block, obtains the partial data in the said transmission block;
First verification unit is used for that said partial data is carried out CRC CRC and calculates, and obtains the second CRC check information;
First feedback unit is used for when judging that the first CRC check information equates with the second CRC check information, confirms that transmission is correct, and feedback acknowledgment is replied.
17. device according to claim 16; It is characterized in that; Said acquiring unit specifically is used for when the size of judging said transmission block satisfies transmission block that AMR AMR speech frame adopts big or small, obtaining the sub-flow data of A in the said transmission block at least.
18. according to claim 16 or 17 described devices, it is characterized in that, also comprise:
First judging unit is used to judge whether the first CRC check information equates with the second CRC check information, and the judged result that equates is sent to said feedback unit, and unequal judged result is sent to second verification unit;
Said second verification unit is used for when receiving the unequal judged result of first judging unit transmission, whole transmission block being carried out CRC calculating, and obtains the 3rd CRC check information;
Second judging unit is used to judge whether said the 3rd CRC check information equates with a CRC checking information, and the judged result that equates is sent said first feedback unit, and unequal judged result is sent to second feedback unit;
Said second feedback unit is used for sending non-affirmation and replying receiving second judging unit when sending unequal judged result.
19., it is characterized in that said definite unit comprises according to claim 16 or 17 described devices:
Receiving element is used to receive the fast size of said transmission that control channel sends;
And/or
Detecting unit is used for the size according to pre-configured transmission block, the blind Detecting data channel;
The 3rd verification unit, and the transmission block that blind check is measured obtains the size of said transmission block through CRC check.
20. the device of a transport block cyclic redundancy check is characterized in that, comprising:
Confirm the unit, be used for confirming the size of said transmission block;
Decoding unit is used for the data that receive are decoded, and obtains a transmission block and a CRC checking information;
First verification unit is used for satisfying when pre-conditioned in the size of judging said transmission block, whole transmission block is carried out CRC calculate, and obtains the second CRC check information;
Acquiring unit is used for obtaining the partial data in the said transmission block judging that said second a CRC check information and a CRC checking information are unequal;
Second verification unit is used for that said partial data is carried out CRC CRC and calculates, and obtains the 3rd CRC check information;
Feedback unit is used for when judging that the said first CRC check information equates with the 3rd CRC check information, confirming that said transmission is correct that feedback acknowledgment is replied.
21. device according to claim 20 is characterized in that, said first verification unit is used for satisfying in the size of judging said transmission block and pre-conditionedly is: the size that satisfies the transmission block that AMR AMR speech frame adopts;
Said acquiring unit, the partial data that is used for obtaining said transmission block is for obtain the sub-flow data of A in the said transmission block at least;
Said second verification unit is used for that the sub-flow data of said A is carried out CRC CRC and calculates, and obtains the 3rd CRC check information.
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| CN201110000639.6A CN102571266B (en) | 2011-01-04 | 2011-01-04 | A kind of method of transport block cyclic redundancy check and device |
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