CN101252421A - Encoding and decoding method and apparatus of short answering / no answering - Google Patents
Encoding and decoding method and apparatus of short answering / no answering Download PDFInfo
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- CN101252421A CN101252421A CNA200710147320XA CN200710147320A CN101252421A CN 101252421 A CN101252421 A CN 101252421A CN A200710147320X A CNA200710147320X A CN A200710147320XA CN 200710147320 A CN200710147320 A CN 200710147320A CN 101252421 A CN101252421 A CN 101252421A
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Abstract
The invention implementation example provides an encoding method of the short answering/denial answering PAN. The method includes that based on the time or the single temporary block flow TBF operation, the structure of the PAN based on the starting block sequence number SSN includes an information field and an supplement field which has the same bit number as the bit number included in the temporary block flow indication TFI; the information field and the supplement field are set; the field which has the same bit number as the supplement field in the CRC cycle redundancy code corresponding to the PAN is selected to process XOR operation with the supplement field; the result of the XOR operation is combined with the other fields which are not processed with the XOR operation; the combination and the information field in the PAN are used as the encoding result of the PAN. The invention also discloses a PAN encoding device, a PAN decoding method and a device. The encoding method of the short answering/denial answering PAN is adopted to simplify and unify the PAN encoding and decoding modes.
Description
Technical field
The present invention relates to encoding and decoding technique, particularly a kind of short answering/no answering (PiggybackedAcknowledged/Non Acknowledged, decoding method PAN) and device.
Background technology
At global system for mobile communications (Gobal System for Mobile Communication, GSM), GPRS (General Packet Radio Service, GPRS), strengthen GPRS (Enhanced GPRS, EGPRS) in the system, a time division multiple access (Time Division MultipleAccess, TDMA) frame is made up of 8 time slots, and transfer of data is radio block (Block) at the minimum scheduling unit of physical layer at present, and this radio block can be divided into two classes.The first kind wherein, each radio block is made up of 4 time slots, and lays respectively at 4 continuous tdma frames, and the Transmission Time Interval of each radio block all is 20 milliseconds, this radio block is called basis transmission time (Basic TransmitTime Interval, BTTI) radio block; Second class, keep the big or small constant of each radio block, utilize multicarrier or multi-slot that the Transmission Time Interval of each radio block is reduced to 10 milliseconds, for example in time domain, 4 time slots of each radio block can be arranged in 2 continuous tdma frames, comprise 2 time slots in each tdma frame, this radio block is called Transmission Time Interval (ReducedTransmit Time Interval, the RTTI) radio block of minimizing.Fig. 1 is the schematic diagram of BTTI and RTTI radio block in the prior art, and the horizontal direction among Fig. 1 is represented different tdma frames, vertical direction represent different Packet Data Channels (Packet Data Channel, PDCH).
In communication system, each logic link control (Logic Link Control, LLC) frame is controlled (Radio Link Control by a series of Radio Links, RLC) data block is formed, each RLC data block all has corresponding piece sequence number BSN, and transmits from the sending direction recipient according to the order of BSN.The recipient has only all RLC data blocks that correctly receive a LLC frame could submit to the upper strata to handle.RLC data block is usually included in the access control of RLC/ medium, and (Media Access Control, MAC) in the data block, and the transmission of RLC/MAC data block is by BTTI or the carrying of RTTI radio block.
In order to optimize the transfer of data under the packet switched mode, being transmitted under RLC affirmation mode and the non-persistent mode of RLC data block is subjected to ask again automatically (Auto Repeat Request, ARQ) mechanism control, be that the recipient can be periodically or by the transmit leg poll, reception condition at data block is returned affirmation/non-affirmation (Acknowledge/Non Acknowledge to transmit leg, ACK/NACK) report, which RLC data block of notice transmit leg receives correct, which RLC data block receives mistake, and the concrete mode that sends is that the recipient will feed back to transmit leg in the ACK/NACK report insertion RLC/MAC data block.Transmit leg can be retransmitted according to the ACK/NACK report and receive wrong RCL data block.In the manner described above, when the recipient finds the incorrect reception of some data block, could send the ACK/NACK report in the time of can only waiting for feedback cycle arrival or transmit leg poll, the group packet delay on upper strata is bigger.
In order to reduce the group packet delay on upper strata, notifying transmit leg to retransmit does not as early as possible have the correct RCL data block that receives, and the recipient inserts PAN in the RLC/MAC data block, with the reception condition of PAN feedback RLC data block.
At present, the PAN that is inserted in the RLC/MAC data block has two kinds of structures, a kind of starting block sequence number (Starting Sequence Number, PAN SSN), a kind of PAN that is based on the time of being based on.
At PAN based on SSN, at down direction, promptly send to the PAN that inserts in the RCL/MAC data block of terminal at network, must comprise Temporary Block Flow sign (Temporary Flow Identity, TFI), TFI represent under the RCL data block Temporary Block Flow (Temporary Block Flow, TBF).The length of the PAN of this TFI of comprising is generally 25 bits, is called the PAN based on SSN under many TBF operations; At up direction, be that terminal sends to the PAN that inserts in the RLC/MAC data block of network, only all support just to comprise TFI in many TBF operations at network and terminal, wherein the either party does not support many TBF, promptly under single TBF operation, just do not comprise TFI among the PAN, the PAN that does not comprise TFI is generally 20 bits, is called the PAN based on SSN under single TBF operation.Fig. 2 is that many TBF operation is down based on the structural representation of the PAN of SSN in the prior art, and horizontal direction is bit number from right to left in the diagram, and vertical direction is byte number from top to bottom.Wherein window initial (Begin Of Window, BOW) expression receive window/send window start bit, length is 1 bit, its value correspondence is not the earliest by the BSN of the RLC data block that correctly receives or lose; Short SSN represents short starting block sequence number, length is 7 bit to 11 bits, when using a plurality of PAN to feed back the reception condition of the RLC data block that once receives, this sequence number is represented the starting block sequence number of the RLC data block of each PAN feedback, and value is identical with the BSN of RLC data block; TFI represents the Temporary Block Flow sign, and length is 5 bits, the data flow under the expression RCL data block; RB represents the bit map reported, length is 8 bit to 14 bits, the reception condition of the corresponding RLC data block of each bit representation of bit map, available " 0 " and " 1 " expression, for example can correctly receive, and represent that with " 0 " receiving terminal does not correctly receive or loses with " 1 " expression receiving terminal.In the PAN structure based on SSN under many TBF operations, described BOW, ShortSSN and RB can be referred to as information field.If structure shown in Figure 2 does not comprise TFI, then be the following PAN structure of single TBF operation based on SSN.
Only be used for down direction at time-based PAN, send at network promptly that to insert length in the RCL/MAC data block of terminal be the PAN of 20 bits, and 20 bits are bit map.Fig. 3 is the structural representation of time-based PAN in the prior art, wherein includes only bit map, identical among the effect of bit map and Fig. 2.In time-based PAN structure, also can call information field to RB.
When the receive direction transmit leg feeds back the reception condition of RLC data block in the mode of PAN, need carry out transmitting again after the chnnel coding, transmit leg is by knowing the reception condition of RLC data block to the decoding of PAN then.At above-mentioned PAN and time-based PAN, there is the corresponding codes method in the prior art respectively based on SSN.
Coding at based on the PAN of SSN has following two kinds of situations.
If comprise TFI among first PAN, be that 25 bits are example with the total length of common PAN, to the information field of 20 bits, utilize generator polynomial D
5+ D
4+ D
3+ D
2+ D
1+ 1 calculates cyclic redundancy code (the Cyclic Redundancy Code of 6 bits, CRC), can be designated as CRC-6,5 again that last 5 bits of CRC-6 are corresponding with TFI bits carry out XOR, 1 bit that has neither part nor lot in XOR among XOR result and the CRC-6 is formed TFI-CRC, the information field of TFI-CRC and PAN is formed the coding result of 26 bits.Above-mentioned generator polynomial can be the information field according to PAN, utilizes modes such as emulation, empirical value to determine.Fig. 4 shows the process of under this mode PAN being encoded, and Fig. 4 has also reflected the position after the information field combination among TFI-CRC and the PAN.
If do not comprise TFI among second PAN, be that 20 bits are example with the total length of common PAN, to the 20 bit information fields of PAN, directly utilize generator polynomial D
5+ D
4+ D
3+ D
2+ D
1+ 1 calculates the CRC-6 of 6 bits, the information field of the PAN of CRC-6 and 20 bits is formed the coding result of 26 bits.Fig. 5 shows the process of under this mode PAN being encoded, and Fig. 5 has also reflected the position after the information field among CRC-6 and the PAN makes up.
At time-based PAN, its coding method is identical with second kind of coding method of above-mentioned PAN based on SSN.
At above-mentioned several modes, draw coding result to PAN after, also need carry out the subsequent communication channel coding step.
As seen in the prior art, PAN based on SSN has two kinds of bit lengths, for example normally used many TBF operations are 25 bits based on the PAN of SSN down, single TBF operation is 20 bits based on the PAN of SSN down, time-based PAN length also is 20 bits, also inequality based on the PAN length of SSN down with many TBF operations, when chnnel coding, will design coding method respectively like this to the PAN of these two kinds of length, and make decoding one end need support the decoding of the PAN of two kinds of length, bring bigger complexity.
Summary of the invention
The embodiment of the invention provides the coding method of a kind of PAN, and this method can be in communication system, and the recipient adopts PAN to transmit leg feedback during to the reception condition of RLC data block, simplifies and the coded system of unified PAN.
The embodiment of the invention provides the coding/decoding method of a kind of PAN, and this method can be in communication system, and the recipient adopts PAN to transmit leg feedback during to the reception condition of RLC data block, simplifies and the decoding process of unified PAN.
The embodiment of the invention provides the code device of a kind of PAN, and this device can be in communication system, and the recipient adopts PAN to transmit leg feedback during to the reception condition of RLC data block, simplifies and the coded system of unified PAN.
The embodiment of the invention provides the decoding device of a kind of PAN, and this device can be in communication system, and the recipient adopts PAN to transmit leg feedback during to the reception condition of RLC data block, simplifies and the decoding process of unified PAN.
The embodiment of the invention provides the coding method of a kind of PAN, and the recipient in the communication system encodes to PAN, adopts the reception condition of described PAN to transmit leg feedback Radio Link control RLC data block, and the recipient comprises the coding method of described PAN:
Setting comprises the information field that carries the RLC data block reception condition based on the structure of the PAN of starting block sequence number SSN down based on the operation of time or single Temporary Block Flow TBF, and number of bits is indicated the identical supplemental field of number of bits that TFI comprises with Temporary Block Flow;
In the cyclic redundancy code CRC of the information field correspondence of described PAN, select the field with described supplemental field same bits figure place, carry out XOR with described supplemental field;
With the field combination except that participating in XOR among described XOR result and the described CRC, add the information field among the described PAN, as coding result to described PAN.
The embodiment of the invention provides the coding/decoding method of a kind of PAN, and the recipient in the communication system encodes to PAN, adopts the reception condition of described PAN to transmit leg feedback RLC data block, and the coding/decoding method of the PAN of transmit leg after to described coding comprises:
Use with encode after PAN in the identical field of field bit figure place except that information field, carry out XOR with the field except that information field among the PAN behind the described coding;
Use the CRC of information field among the PAN after generator polynomial obtains corresponding described coding;
When more described CRC and described XOR come to the same thing, with the information field among the PAN behind the described coding as decoded result.
The embodiment of the invention provides the code device of a kind of PAN, and this device comprises:
Module is set, is used to obtain based on time or the following PAN based on SSN of single TBF operation, the structure that described PAN is set comprises information field and the number of bits supplemental field identical with number of bits that TFI comprises;
Computing module is used for selecting field with described supplemental field same bits figure place at the CRC of the information field correspondence of described PAN, carries out XOR with described supplemental field;
Composite module is used for XOR result that described computing module is drawn, with the field combination except that participating in XOR among the described CRC, adds the information field among the described PAN, as the coding result to described PAN.
The embodiment of the invention provides the decoding device of a kind of PAN, and this device comprises:
Computing module is used to receive the PAN behind the coding that the recipient sends, use with described coding after PAN in the identical field of field bit figure place except that information field, carry out XOR with the field except that information field among the PAN behind the described coding;
The CRC generation module is used for using generator polynomial to obtain the CRC of the PAN information field behind the corresponding described coding;
Acquisition module, when being used for more described CRC and described XOR and coming to the same thing, the information field among the PAN behind the coding that described computing module is received is as decoded result.
As seen, the coding method of the PAN that the embodiment of the invention provides and device, setting comprises information field based on the structure of the PAN of SSN down based on time or single TBF operation, and the identical supplemental field of number of bits that comprises of number of bits and TFI, the length that makes described PAN and many TBF operations length based on the PAN of SSN down are identical, thereby can use described many TBF operation down based on the coding method of the PAN of SSN, and need not that the PAN to two kinds of length designs coding method respectively when chnnel coding, thereby simplify and unified the coded system of PAN.
The coding/decoding method of the PAN that the embodiment of the invention provides and device, based on the PAN behind the coding of unified length, use the identical field of field bit figure place except that information field in the coding result with the PAN that receives, carry out XOR with the field except that information field in the coding result of described PAN, when the CRC of information field is identical in the coding result of this XOR result and corresponding PAN, information field from the coding result of PAN obtains the reception condition of recipient to RLC data block, and need not to design different coding/decoding methods respectively at the coding result of the PAN of different length, unified and simplified the coding/decoding method of PAN.
Description of drawings
Fig. 1 is the schematic diagram of BTTI and RTTI radio block in the prior art;
Fig. 2 be in the prior art many TBF operation down based on the structural representation of the PAN of SSN;
Fig. 3 is the structural representation of time-based PAN in the prior art;
Fig. 4 is the following PAN cataloged procedure schematic diagram based on SSN of many TBF operations in the prior art;
Fig. 5 is the following PAN cataloged procedure schematic diagram based on SSN of single TBF operation in the prior art;
The coding method flow chart of the PAN that Fig. 6 provides for the embodiment of the invention;
The cataloged procedure schematic diagram of first kind of better embodiment of coding method of the PAN that Fig. 7 provides for the embodiment of the invention;
The coding/decoding method flow chart of the PAN that Fig. 8 provides for the embodiment of the invention;
The code device structural representation of the PAN that Fig. 9 provides for the embodiment of the invention;
The decoding device structural representation of the PAN that Figure 10 provides for the embodiment of the invention.
Embodiment
For the purpose and the advantage that make the embodiment of the invention is clearer, the embodiment of the invention is described in further detail below in conjunction with accompanying drawing.
At first, introduce the coding method of the PAN that the embodiment of the invention provides.
In communication system, the sending direction recipient sends RLC data block, and the recipient adopts PAN to feed back which RLC data block to transmit leg and correctly received according to self reception condition to RLC data block, and which RLC data block is not correctly received.Above-mentioned PAN is needing to encode by before the receive direction transmit leg feedback, the coding method of the PAN that the embodiment of the invention provides, be exactly under the above-mentioned situation in the coding method of recipient's PAN.
The coding method flow chart of the PAN that Fig. 6 provides for the embodiment of the invention, this flow process comprises:
Step 601: be provided with based on time or single TBF operation and comprise information field based on the structure of the PAN of SSN down, and the identical supplemental field of number of bits that comprises of number of bits and TFI.
In this step, at the PAN based on SSN, under the situation of recipient and/or the single TBF of transmit leg support, at up direction, promptly terminal sends among the PAN of network, does not comprise TFI; At time-based PAN, be the reception condition of benchmark feedback data piece with time, because it only is used for down direction, at down direction, promptly network sends among the PAN of terminal, does not comprise TFI.At above-mentioned two kinds of situations that do not comprise TFI, the structure that described PAN can be set comprises information field, and the supplemental field identical with the TFI number of bits.
Step 602: in the CRC of the information field correspondence of described PAN, select the field with described supplemental field same bits figure place, carry out XOR with described supplemental field.
In this step, when in the CRC of the information field correspondence of PAN, selecting the field with described supplemental field same bits figure place, can select according to the actual needs of using.For example, when supplemental field is 5 bits, can from CRC, select preceding 5 bits or back 5 bits and supplemental field to carry out XOR.
Step 603:, add the information field among the PAN, as coding result to PAN with the field combination except that participating in XOR among described XOR result and the described CRC.
In this step, can be with the ordinal relation combination of the field except that participating in XOR among described XOR result and the CRC according to bit, for example suppose that CRC has 6 bits, select back 5 bits and supplemental field to carry out XOR, then the result of XOR also is 5 bits, the XOR result of this 5 bit can be combined to the 1st bit back that CRC has neither part nor lot in XOR.After the combinations thereof, combined result can be added in the information field back among the PAN, as coding result to PAN.Certainly, above-mentioned XOR result with except that participating in the field combination of XOR, and the result after the combination adds information field among the PAN, different compound modes can also be arranged, this compound mode as long as coding one end and the end of decoding are made an appointment.Coding result in this step, also need carry out the subsequent communication channel coding step could send from the receive direction transmit leg, concrete channel coding method is not the emphasis that the embodiment of the invention is discussed, and is those skilled in the art's common practise, repeats no more here.
The coding method of the PAN that the embodiment of the invention provides, setting comprises information field based on the structure of the PAN of SSN down based on time or single TBF operation, and the identical supplemental field of number of bits that comprises of number of bits and TFI, make that the length based on the following PAN based on SSN of the length of the PAN of SSN and many TBF operations is identical down based on time or single TBF operation, thereby can use described many TBF operation down based on the coding method of the PAN of SSN, and need not that the PAN to two kinds of length designs coding method respectively when chnnel coding, thereby simplify and unified the coded system of PAN.
Above-mentioned time-based PAN, owing to only be the reception condition of benchmark feedback RLC data block with time, so itself just need not to carry TFI.Be example based on PAN and the time-based PAN of SSN down at single TBF operation respectively below, enumerate two concrete better embodiment.
Down based on the PAN of SSN, suppose that application scenarios is: the information field length of PAN is 20 bits at single TBF operation, and generator polynomial is D
5+ D
4+ D
3+ D
2+ D
1+ 1, the CRC that calculates is 6 bits, i.e. CRC-6, and TFI is 5 bits.Based on above-mentioned hypothesis application scenarios, can pass through the coding of following dual mode realization again to PAN:
The first, at first, the field of replenishing for PAN is 5 bits, and the value of each bit, and is identical with the value of each bit among TBF is corresponding under the RLC data block that PAN will feed back the TFI.For example, the TFI of TBF correspondence is 00110 under the RLC data block that PAN will feed back, and also is 00110 for the value in the 5 additional bit fields of PAN then.
Secondly, utilize generator polynomial to obtain CRC-6, keep the 1st bit among the CRC-6 constant, back 5 bit fields with CRC-6 carry out XOR with supplemental field.
At last,, can be called TFI-CRC, add the information field among the PAN, as coding result to PAN with the 1st bit back of XOR result combinations to CRC-6.
Fig. 7 shows in above-mentioned first kind of better embodiment the cataloged procedure to PAN.
The second, at first, the field of replenishing for PAN is 5 bits, and the value of each additional bit is 0.
Secondly, utilize generator polynomial to obtain CRC-6, keep the 1st bit among the CRC-6 constant, back 5 bit fields with CRC-6 carry out XOR with supplemental field.Because each bit value of supplemental field all is 0, the result of XOR still is CRC itself here.
At last, the XOR result combinations to CRC-6 the 1st bit back, is added the information field among the PAN, as the coding result to PAN.
Same as shown in Figure 7 in above-mentioned second kind of better embodiment to the cataloged procedure of PAN.
At time-based PAN, suppose that application scenarios is: the information field of PAN is 20 bits, and generator polynomial is D
5+ D
4+ D
3+ D
2+ D
1+ 1, the CRC that calculates is 6 bits, i.e. CRC-6, and TFI is 5 bits.Under this application scenarios, to the cataloged procedure of PAN with in the coding method based on the PAN that does not comprise TFI of SSN, described second kind of better embodiment is identical, repeats no more here.
Except the above-mentioned better embodiment of enumerating,, can also take other execution mode for the value of each bit in the supplemental field.For example, the value that recipient and transmit leg all can be discerned is set, this value is write in the supplemental field, after the coding method of the PAN that provides according to the embodiment of the invention of coding one end is encoded like this, because the value in the supplemental field is that recipient and transmit leg all can be discerned, therefore decode an end according to agreement, can be correctly decoded PAN equally, thereby know the reception condition of RLC data block the supplemental field value.
In the above-mentioned better embodiment, information field with PAN is that 20 bits are example, but be not limited to this situation, the information field of PAN can also be other number of bits, can determine corresponding generator polynomial according to the information field of different PAN, the concrete method of determining is a general knowledge as well known to those skilled in the art, repeats no more here.
The coding method of the PAN that provides at the invention described above embodiment, the end of decoding can be taked to decode with the inverse process of above-mentioned coding method, the coding/decoding method of the PAN that Fig. 8 provides for the embodiment of the invention, after corresponding transmit leg is received PAN behind the coding that the recipient feeds back, PAN behind the coding is decoded, with the reception condition of the RLC data block that obtains recipient's feedback.Flow process shown in Figure 8 comprises:
Step 801: use with encode after PAN in the identical field of field bit figure place except that information field, carry out XOR with the field except that information field among the PAN behind the described coding.
Step 802: the CRC that uses information field among the PAN after generator polynomial obtains corresponding described coding.
Step 803: when more described CRC and described XOR come to the same thing, with the information field among the PAN behind the described coding as decoded result.
In this step, purpose relatively is that transmit leg need confirm the whether reception condition of the RLC data block of the corresponding TBF that self need feed back of the current PAN that receives, if, think that then the information field among the PAN behind this coding has comprised the reception condition of the RLC data block of the TBF that self need feed back, can be with the information field among the PAN after should coding as decoded result.Then, proceed the follow-up operation of recipient of obtaining, otherwise can not process the reception condition of RLC data block.
The coding/decoding method of the PAN that the embodiment of the invention provides, the coding method of the PAN that provides based on the invention process, the end of decoding need not to possess the decoding capability at the different coding method, promptly need not at the different different coding/decoding methods of coding method design, simplify and unified the coding/decoding method of PAN, reduced the complexity that the end of decoding is realized.
The identical field of field bit figure place in the coding result of above-mentioned and the PAN that receives except that information field, the value of each bit can have several situations.
The first, each bit value is 0, and correspondence each bit of supplemental field in the coding method of PAN is 0 situation.
The second, the value of each bit also can be the pairing TFI value of TBF of described transmit leg configuration, and correspondence each bit of supplemental field in the coding method of PAN is got the TFI of its TBF correspondence that will feed back; In this case, the described XOR of step 801 can be the identical field of the pairing TFI value of TBF of using the configuration of described transmit leg, respectively with the coding result of described PAN in field except that information field carry out XOR, draw a plurality of XOR results; And the relatively more described CRC in the step 803 and described XOR result can for: whether more above-mentioned respectively a plurality of XOR results and described CRC identical.
Three, the value of each bit can be arranged according to both sides, and the value of the supplemental field in the coding of corresponding PAN is set to the value of both sides' agreement.
Secondly, introduce the code device of the PAN that the embodiment of the invention provides.
The code device of the PAN that Fig. 9 provides for the embodiment of the invention, this device comprises: field is provided with module, computing module and composite module.
Module is set, is used to obtain based on time or the following PAN based on SSN of single TBF operation, the structure that described PAN is set comprises information field and the number of bits supplemental field identical with number of bits that TFI comprises.
Computing module is used for carrying out XOR in the field of the CRC of described PAN correspondence selection with described supplemental field same bits figure place with described supplemental field.
Composite module is used for XOR result that described computing module is drawn, with the field combination except that participating in XOR among the described CRC, adds the information field among the PAN, as the coding result to PAN.
The code device of the PAN that the embodiment of the invention provides, setting comprises the identical supplemental field of number of bits that information field and number of bits and TFI comprise based on the structure of the PAN of SSN down based on time or single TBF operation, make that the length based on the following PAN based on SSN of the length of the PAN of SSN and many TBF operations is identical down based on time or single TBF operation, thereby can use many TBF operation down based on the coding method of the PAN of SSN, and need not that the PAN to two kinds of length designs coding method respectively when chnnel coding, thereby simplify and unified the coded system of PAN.
In the code device of the PAN that the embodiment of the invention provides, can also comprise that value is provided with module, be used to each bit in the described supplemental field that the module setting is set that value is set.
In this case, module being set can comprise: value read module and Executive Module is set.
The value read module is used for from described value module being set, and reads the value of described each bit.
Executive Module is set, be used to obtain based on time or the following PAN of single TBF operation based on SSN, the structure that described PAN is set comprises information field and the number of bits supplemental field identical with number of bits that TFI comprises, from described value read module, read the value of described each bit, write in each bit of described supplemental field.
The structural representation of the decoding device of the PAN that Figure 10 provides for the embodiment of the invention, this device comprises:
Computing module is used to receive the PAN behind the coding that the recipient sends, use with described coding after PAN in the identical field of field bit figure place except that information field, carry out XOR with the field except that information field among the PAN behind the described coding.
The CRC generation module is used for using generator polynomial to obtain the CRC of the PAN information field behind the corresponding described coding.
Acquisition module, when being used for more described CRC and described XOR and coming to the same thing, the information field among the PAN behind the coding that described computing module is received is as decoded result.
The decoding device of the PAN that the embodiment of the invention provides, the code device of the PAN that provides based on the embodiment of the invention, need not to possess decoding capability at the different coding method, promptly need not at the different different coding/decoding methods of coding method design, simplify and unified the decoding process of PAN, reduced the complexity that the end of decoding is realized.
In the decoding device of the PAN that the embodiment of the invention provides, can also comprise that value is provided with module, be used to that described computing module uses with described coding after PAN in the identical field of field bit figure place except that information field, value is set.
Down, described computing module can comprise: value read module and computing Executive Module in view of the situation.
The value read module is used for from described value module being set, be read as with described coding after the field bit figure place identical field of PAN except that information field, the value of setting.
The computing Executive Module, be used to receive the PAN behind the coding that the recipient sends, from described value read module, read with encode after PAN in the identical corresponding value of field of field bit figure place except that information field, write in each bit of this field, and use among the PAN behind this field and the described coding field except that information field to carry out XOR.
The code device of the PAN that the embodiment of the invention provides, the coding method work of the PAN that can provide according to the embodiment of the invention, this device can be positioned at the inside of equipment that the recipient uses, and perhaps is positioned at the outside of equipment that the recipient uses, but possesses annexation with recipient institute use equipment.Similarly, the decoding device of the PAN that the embodiment of the invention provides, the coding/decoding method work of the PAN that can provide according to the embodiment of the invention, this device can be positioned at the inside of equipment that the recipient uses, perhaps be positioned at the outside of equipment that the recipient uses, but possess annexation with recipient institute use equipment.
In sum, more than be preferred embodiment of the present invention only, be not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. the coding method of a short answering/no answering, recipient in the communication system encodes to short answering/no answering PAN, adopt the reception condition of described PAN, it is characterized in that the recipient comprises the coding method of described PAN to transmit leg feedback Radio Link control RLC data block:
Setting comprises the information field that carries the RLC data block reception condition based on the structure of the PAN of starting block sequence number SSN down based on the operation of time or single Temporary Block Flow TBF, and number of bits is indicated the identical supplemental field of number of bits that TFI comprises with Temporary Block Flow;
In the cyclic redundancy code CRC of the information field correspondence of described PAN, select the field with described supplemental field same bits figure place, carry out XOR with described supplemental field;
With the field combination except that participating in XOR among described XOR result and the described CRC, add the information field among the described PAN, as coding result to described PAN.
2. coding method as claimed in claim 1 is characterized in that the number of bits that described TFI comprised is 5, and the value of each bit correspondence is 0 in the described supplemental field.
3. coding method as claimed in claim 1, it is characterized in that, the number of bits that described TFI comprised is 5, the value of each bit correspondence is in the described supplemental field: the TFI of TBF correspondence under the Radio Link control RLC data block that will feed back according to described PAN, with the value of each bit of the TFI of this TBF correspondence, as the value of each bit correspondence in the described supplemental field.
4. the coding/decoding method of a short answering/no answering, the recipient in the communication system encodes to PAN, adopts the reception condition of described PAN to transmit leg feedback RLC data block, it is characterized in that, and the coding/decoding method of the PAN of transmit leg after to described coding comprises:
Use with encode after PAN in the identical field of field bit figure place except that information field, carry out XOR with the field except that information field among the PAN behind the described coding;
Use the CRC of information field among the PAN after generator polynomial obtains corresponding described coding;
When more described CRC and described XOR come to the same thing, with the information field among the PAN behind the described coding as decoded result.
5. coding/decoding method as claimed in claim 4 is characterized in that, the field value that field bit figure place except that information field is identical among the PAN behind described and the coding is 0.
6. coding/decoding method as claimed in claim 4 is characterized in that, the field value that field bit figure place except that information field is identical among the PAN behind described and the coding is: the pairing TFI value of TBF that described transmit leg disposes.
7. coding/decoding method as claimed in claim 6 is characterized in that, the identical field of field bit figure place except that information field among the PAN behind described use and the coding is carried out XOR with the field except that information field among the PAN behind the described coding and is:
Use the identical field of the pairing TFI value of TBF of described transmit leg configuration, respectively with described coding after PAN in field except that information field carry out XOR.
8. the code device of a short answering/no answering is characterized in that, this device comprises:
Module is set, is used to obtain based on time or the following PAN based on SSN of single TBF operation, the structure that described PAN is set comprises information field and the number of bits supplemental field identical with number of bits that TFI comprises;
Computing module is used for selecting field with described supplemental field same bits figure place at the CRC of the information field correspondence of described PAN, carries out XOR with described supplemental field;
Composite module is used for XOR result that described computing module is drawn, with the field combination except that participating in XOR among the described CRC, adds the information field among the described PAN, as the coding result to described PAN.
9. code device as claimed in claim 8 is characterized in that further comprise in this device: value is provided with module, is used to each bit in the described supplemental field that the module setting is set that value is set;
The described module that is provided with comprises: value read module and Executive Module is set;
Described value read module is used for from described value module being set, and reads the value of described each bit;
The described Executive Module that is provided with, be used to obtain based on time or the following PAN of single TBF operation based on SSN, the structure that described PAN is set comprises information field and the number of bits supplemental field identical with number of bits that TFI comprises, from described value read module, read the value of described each bit, write in each bit of described supplemental field.
10. the decoding device of a short answering/no answering is characterized in that, this device comprises:
Computing module is used to receive the PAN behind the coding that the recipient sends, use with described coding after PAN in the identical field of field bit figure place except that information field, carry out XOR with the field except that information field among the PAN behind the described coding;
The CRC generation module is used for using generator polynomial to obtain the CRC of the PAN information field behind the corresponding described coding;
Acquisition module, when being used for more described CRC and described XOR and coming to the same thing, the information field among the PAN behind the coding that described computing module is received is as decoded result.
11. decoding device as claimed in claim 10, it is characterized in that, further comprise in this device: value is provided with module, be used to that described computing module uses with coding after PAN in the identical field of field bit figure place except that information field, value is set;
Described computing module comprises: value read module and computing Executive Module;
Described value read module is used for from described value module being set, be read as with encode after PAN in the identical field of field bit figure place except that information field, the value of setting;
Described computing Executive Module, be used to receive the PAN behind the coding that the recipient sends, from described value read module, read with encode after PAN in the identical corresponding value of field of field bit figure place except that information field, write in each bit of this field, and use among the PAN behind this field and the described coding field except that information field to carry out XOR.
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Cited By (5)
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| WO2010025689A1 (en) * | 2008-09-05 | 2010-03-11 | 华为技术有限公司 | A method, a device and a system for submitting and reading measuring report |
| CN101359980B (en) * | 2008-09-05 | 2011-02-09 | 华为技术有限公司 | Exception processing method in RLC data transmission process |
| CN101854222B (en) * | 2009-03-31 | 2014-04-02 | 华为技术有限公司 | Data processing method, communication device and system |
| CN108418658A (en) * | 2017-09-08 | 2018-08-17 | 华为技术有限公司 | Coding method and device |
| US10425190B2 (en) | 2017-09-08 | 2019-09-24 | Huawei Technologies Co., Ltd. | Channel encoding method and apparatus in wireless communications |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1379033A1 (en) * | 2002-07-01 | 2004-01-07 | Siemens Mobile Communications S.p.A. | Method for releasing single downlink TBFs in a mobile radio system |
| US7414989B2 (en) * | 2003-05-07 | 2008-08-19 | Motorola, Inc. | ACK/NACK determination reliability for a communication device |
| CN100578959C (en) * | 2004-04-07 | 2010-01-06 | Lg电子株式会社 | The method and apparatus of processing control information in many input/multi-output communication systems |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2010025689A1 (en) * | 2008-09-05 | 2010-03-11 | 华为技术有限公司 | A method, a device and a system for submitting and reading measuring report |
| CN101359980B (en) * | 2008-09-05 | 2011-02-09 | 华为技术有限公司 | Exception processing method in RLC data transmission process |
| CN101854222B (en) * | 2009-03-31 | 2014-04-02 | 华为技术有限公司 | Data processing method, communication device and system |
| CN108418658A (en) * | 2017-09-08 | 2018-08-17 | 华为技术有限公司 | Coding method and device |
| CN108418658B (en) * | 2017-09-08 | 2019-03-26 | 华为技术有限公司 | Coding method and device |
| US10425190B2 (en) | 2017-09-08 | 2019-09-24 | Huawei Technologies Co., Ltd. | Channel encoding method and apparatus in wireless communications |
| US10999009B2 (en) | 2017-09-08 | 2021-05-04 | Huawei Technologies Co., Ltd. | Channel encoding method and apparatus in wireless communications |
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| CN101252421B (en) | 2011-01-19 |
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