TW200926671A - Method of data transmission using HARQ - Google Patents

Abstract

A method of transmitting data from a user terminal to a base station using a hybrid automatic repeat request (HARQ) scheme with a plurality of redundancy versions of said data, each of the redundancy versions (RV) indicating a transmission start position of a data block in a circular buffer is disclosed. For each retransmission, the redundancy version to be used by considering the previously used redundancy version and a predetermined sequence is determined. Within one sequence, at least two redundancy versions following each other have non consecutive start positions.

Description

200926671 VI. Description of the Invention: [Technical Field] The present invention relates to wireless communication, and more particularly to a data transmission method using hybrid automatic repeat request (HARQ). [Prior Art] Error correction rules can be utilized to ensure communication reliability. Examples of this error correction rule include the Forward Error Correction (FEC) rule and the Automatic Repeat Request (HRQ) rule. In the FEC rule, the transmitter encodes the information bits by using an additional error correction code and then # sends the information bits. A receiver demodulates the received signals, then encodes the error correction code, and then recovers the transmitted information. According to the decoding procedure, the received signal error can be corrected. In contrast, in the ARQ rule, the transmitter performs error correction by retransmitting the data. Examples of the ARQ rule include stop and wait (SAW), go-back-N (GBN), selective repeat (SR), and the like. The turbo code is an error correction code. The turbo code includes a recursive system rotary encoder and an interleaver. A quadrant polynomial scrambling (QPP) interleaver is an interleaver paradigm that can be used to assist in parallel decoding when implementing the turbo code. The QPP interleaver is known to maintain a good performance only when a data block has a particular size. The larger the size of the data block, the better the performance of the turbo code in 200926671. However, in order to facilitate the implementation, when a data block has a size larger than a specific size in the actual communication system, the data block is divided into a plurality of smaller data blocks to perform the division of the code division. The smaller data block is called a digital block. In general, the digital blocks of the same size have the same size. However, due to the size limitation in the QPP interleaver, there may be more than one digital block in different digital blocks having different sizes. . The purpose of performing interleaving is to reduce the effects of glitch errors that occur when transmitting data over a wireless channel. After being transmitted, the interlaced assets are mapped to an actual radio resource. A fixed amount of radio resources is utilized when actually transmitting. Thus, a coded digital block requires rate matching processing. In general, this rate matching process can be accomplished by placing or repeating the job. The rate matching process can be performed in units of digital blocks, and the code blocks are encoded, i.e., similar to the third generation partner (3Gpp) wideband coded multiple access (WCDMA). *> The advantage of this FEC rule is a small time delay' and there is no need to exchange information between the transmit/receive ends. However, the disadvantage of the fec rule is that system efficiency is degraded in a good channel environment. The ARQ rule can be utilized to improve transmission reliability. However, the disadvantage of the aRq rule is that the time delay occurs and the system efficiency is inferior in a bad channel environment. To address these shortcomings, a hybrid automatic repeat request (HARQ) rule can be proposed by combining the FEC and the ARQ. According to the HARQ rule, it is determined whether or not a material received by a physical layer contains an unrecoverable error, and a retransmission is requested when an error occurs, thereby improving performance. e H The HARQ-style retransmission rule can be classified into synchronous harq and asynchronous HARQ. Synchronous HARQ is one of the rules for data retransmission at a point when the transmitter and receiver are known. In the synchronous harq rule, the command like the HARQ processor number can be omitted. The asynchronous HARQ is a rule in which resources for retransmission are configured at any point in time. In this non-synchronous HARQ rule, expenses will arise due to additional orders.

The HARQ can be classified into an adaptive HARQ F adaptation HARQ according to the transmission attribute. The transport attribute includes resource configuration, modulation rules, transport block size, and so on. In this adaptability, the 1' transmission attribute changes completely or partially depending on the channel condition. In this non-adaptive & HARQ, the transmission properties for the first transmission are continuously applied regardless of changes in channel conditions. When the error is not detected in the received bedding, the receiver transmits a true MACK) signal (4) as a 1 signal, and thus informs the transmitter of successful reception. The receiver transmits a negative error (NACK) (4) as a 1 (4) when an error is made from the (4) material, and thus notifies the transmitter of the detection error. The transmitter can retransmit 200926671 when receiving the Μ· signal. The HARQ-type receiver basically attempts to perform error correction of the received data' and uses an error detection code to determine whether the weight should be performed. pass. The error debt test code may be a cyclic redundancy check (CRC). When an error is detected from the received data via a CRC detection procedure, the receiver transmits the NACKi message to the transmitter. . When the NACK signal is received, the transmitter will transmit-properly retransmit the data according to the HARQ mode (i.e., a chase merge mode or an incremental redundancy (IR) mode). According to the redundancy version (rv) of the data block feature that is not retransmitted, the HARQ mode can be classified into a chase merge mode and a buddy mode. In the chase merge mode, in order to obtain -, ^ 仏唬 to the noise ratio (SNR), the error data port will be detected and the data will be retransmitted instead of throwing the wrong data. In the IH mode, additional and redundant information is incrementally transmitted along with the retransmitted data to obtain a coding gain and reduce the use of the circular buffer capture rate in the m mode due to the retransmission operation. The rv typically represents the transmission start position of the data block transmitted or retransmitted by the self-loop buffer. That is, a # & 』 means that a certain number of transmission start positions must be defined in the circular buffer.

X and where the specific number is equal to the number of RVs. When the channel conditions are not good, it is necessary to retransmit. Unwanted, every time data retransmission is performed, the 200926671 encoding rate, modulation law, and resource configuration used in the first transmission are still used. The court is unable to properly consider the channel conditions that were changed when the information was retransmitted. Therefore, if the marshalling rate or modulation law changes in time, a method of transmitting data is required, so that an error correction rate can be improved by adaptively selecting the transmission starting position of the data. SUMMARY OF THE INVENTION The present invention provides a data transmission method for improving error correction materials by efficiently selecting a redundancy version using a hybrid automatic repeat request (HARQ). The present invention also provides a method for utilizing a predetermined redundancy version for data transfer based on a transmission number in a synchronous HARQ. The present invention describes a method of transmitting data from a user terminal to a base station in accordance with an embodiment of the present invention. The method utilizes a hybrid automatic repeat request (HARQ) rule of a plurality of redundant versions of the data. 'These versions (Rv) are each represented by a data block in the -circulation buffer. Transfer start position. The method includes performing, in the user terminal, performing the following steps: “borrowing—the 5th C version uses the HARQ rule to perform the first transmission of the data; and using the redundancy version to utilize the HARQ method 200926671 to execute the data. At least one retransmission; and for each retransmission, the redundancy version used is determined by considering the redundancy version and the predetermined sequence used previously. In the -sequence, at least two redundant versions that follow each other have a non-contiguous starting position.隽 * In one embodiment, the sequence is cyclically applied to perform a heavy k retransmission operation. Advantageously, the plurality of redundancy versions comprise four redundancy versions, and in the circular buffer individually there are four different starting positions. In a particular embodiment, the sequence, taking into account its starting position, consists of a redundancy version set in the following order: first, third, fourth and second redundancy versions. Or the other version of the redundancy version with the first starting position is only used for the first transmission and retransmitted, considering the starting point position with a sequence consisting of the following: • The set redundancy version: Third and second redundancy versions. 4 - In a specific embodiment, a redundancy version is specifically used for the first transmission wheel. Advantageously, there are such redundancy versions all having the same size and The circular buffer has an equidistantly separated starting position. In another embodiment, the method further comprises: performing, in the user, performing the following steps: receiving schedule information from the base station; according to the starting point of the row The starting position of the position Ο 200926671 Cheng sft selected a redundant version of the voyage · money version, borrowed - 敎 redundancy version and by considering the w w w 余 余 执行 执行 执行 敎 敎 敎 敎 敎 敎 敎 敎 敎 敎 敎 敎 敎 敎 敎 敎 敎 敎 敎 四 四 四 四 四 四 四 四 四 四Further data retransmission. Advantageously - the schedule information includes - an indicator of the selected redundancy version, or alternatively, the schedule information includes an indicator of the current communication condition, and is selected - immediately adjacent to the office Pass the last redundancy A redundancy version of the location of the point. In another embodiment, the schedule information includes a new data indicator, and the user terminal performs a first transmission when it is received. The invention is also related to a corresponding user terminal, a base station and a communication system. Advantageous effects can be achieved by the efficiency of two hybrid automatic repeat request (HARQ), even if schedule information is not provided. Also, the data of a circular buffer can be transmitted as quickly as possible 'thus, the data transmission throughput can be improved. In addition, the efficiency of using a synchronous HARQ uplink transmission can be increased. [Embodiment] FIG. 1 shows a Wireless communication system. The wireless communication system can be widely deployed for the wide 200926671 to provide various communication services, such as voice, packet data, etc. Referring now to Figure 1 'the wireless communication system includes a base station (BS) 20 and At least one user equipment (UE) 10. The UE 1 may be fixed or mobile, and may be referred to as another term, such as a mobile station (Mg), a user terminal (UT), and a User station SS), a wireless device, etc. Talks BS 20 is generally a fixed station that communicates with the UE 1 and can be referred to as another term, such as a Node-B, a base transceiver a beta system (BTS), an access point, etc. There may be one or more cells within the coverage of the BS 20. The lower chain represents a communication link from the BS 20 to the UE 10, and The uplink is a communication link from the UE 10 to the BS 20. In the lower chain, a transmitter can be part of the BS 20, and a receiver can be part of the UE 10. In the upper chain, the transmitter can be part of the '1〇 and the receiver can be part of the BS 20.不同 Different multiple access rules can be used for downlink and uplink transmission. For example, Quadrature Frequency Division Multiple Access (OFDM) may be utilized for downlink transmission, and single carrier-frequency multiple access (SC-FDMA) may be utilized for uplink transmission. There are no restrictions on the multiple access rules used in this wireless communication system. The multiple access rules may be based on coded multiple access (CDma), timed multiple access (TDMA), frequency multiply access (FDMA), single carrier 200926671 -FDMA (SC-FDMA), orthogonal Frequency multiple access (〇fdMA) or other well-known modulation laws. In these modulation laws, the number received from multiple users is demodulated to refer to the capacity of the communication system. For the sake of simplicity, the OFDMA type wireless communication system will be described later. The OFDMA law utilizes a plurality of orthogonal subcarriers. In addition, the OFDM algorithm utilizes inverse fast Fourier transform (IFFT) and fast Fourier transforms.

Orthogonality between conversions (FFTs). The transmitter transmits the data by performing an IFFT. The receiver recovers the original data by performing an FFT on a received signal. The transmitter uses IFFT to combine a plurality of subcarriers, and the receiver uses the FFT to partition a plurality of subcarriers. According to the 〇fdm rule, the complexity of the receiver can be reduced in a frequency selective fading environment of a wideband channel, and the channel characteristics can be different by using the $-subcarrier, and the selective scheduling in the frequency domain can be transmitted. Processing to improve spectral efficiency...OF. · The law is a 0-cognitive multiple access rule. According to the OFDMA law, a radio resource can be used more efficiently by configuring different sub-compartments for each user. The 罘2 diagram is a block diagram, one of which is not a channel coding procedure. The -in-digital block is transmitted in the format of channel encoding, interleaving, and rate matching. The (four) 'sister with a certain size

The private data block is for channel coding processing. C. The digital blocks may have a large size, or may have different sizes. 12 200926671 Referring to FIG. 2, one channel encoder 110 performs an input digital block. Channel code. The channel encoder 110 can utilize a full wheel code. The turbo code includes a recursive systemic rotary encoder and an interleaver. The turbo code generates a plurality of systematic bits 'and parity bits in a bitwise manner from the input digital block. Here, it can be assumed that a systematic block S and two alignment blocks P1 and P2 are generated by utilizing a 1/3 number of collision rates. The systematic block is a systemic set of bits. The alignment block is a set of a pair of bit units. An interleaver 120 performs interleaving processing on the channel encoded digital blocks' thereby reducing the effects of a glitch error. The interleaver 120 can perform interleaving processing on the systematic blocks S and the two alignment blocks pi and P2. A rate matching unit 130 matches the channel coded digital block to

Adapted to the size of a radio resource. This rate matching process can be performed in units of channel-coded digital blocks. Alternatively, the rate matching process can be performed by dividing the two alignment blocks P1 and P2. Figure 3 shows the transmission start position according to a redundancy version (RV) in a system using rate matching processing in a circular buffer. Here, it will be assumed that the coding rate of a turbo code is 1/3, and a schedule individual for data transmission operations exists in a receiver β, that is, when the receiver will transmit a data transmission format and resource indicator ( TFRI) is transmitted to the transmitter where the resource indicator is - indicating the resource and the transmission format of the data to be transmitted by the transmitter 13 200926671 夕 4t _ 払 该 该 该 该 该 该 该 该 该 该 该Data transfer. In the following text, T疋 will refer to the redundancy version as an RV. Referring to Figure 3, „ 圃 a circular buffer contains 36 logical data blocks in the horizontal direction.

And 1/3 of the logical data blocks (that is, 12 data F ^ blocks) are systematic blocks, and the subsequent 2/3 parts of the logical data blocks are 〜η~* The object (that is, 24 data blocks) is the alignment block. There are four RVs here, as well as dp ❹ P RV0 to RV3. The spacing between the RVs can be obtained by dividing a total circulator buffer by the number of the RVs. The RV is determined when the data transmission from the #fQ request (HARQ) fails. The transmission or retransmission starting position of a block of material changes according to the RV. These RV0 to rV3 are redundant versions indicating the locations of different transmission or retransmission starting points. In the case of the 0th redundancy version (hereinafter referred to as RV0), the transmission is started from the second data block in the circular buffer. In the first! In the case of the redundant version (hereinafter referred to as 1〇^丨), the transmission starts from the 11th data block in the circular buffer. In the case of the second redundancy version (hereinafter referred to as RV2), the transmission is started from the second data block in the circular buffer. In the case of the third redundancy version (hereinafter referred to as RV3), the transmission starts from the 29th data block in the circular buffer. Here, it has been assumed that the turbo code has a coding rate of 1/3 and the number of rvs is four. However, these are for exemplary purposes only, and thus different encoding rates, different numbers of RVs, and different Rv starting positions may be utilized in the present invention 200926671. For the schedule information of the first transmission (that is, as scheduled), it must be transmitted. For retransmission schedule information, it is selective transmission. That is, in the case where there is no schedule information for retransmission, it is necessary for the user terminal to independently define an RV to be used for the transmission job.

❹ A method of adaptively selecting an RV for data retransmission in a HARQ program will be described later. For example, the fixed Rv for the first transmission and the data retransmission can be determined in the -cyclic buffer, and the M1 material is used to transmit the data using the HARQ. That is, as shown in Fig. 3, the squeezing device can be divided into a 闳 θ θ from the meditation master and the data block, thereby determining the fixed transmission starting position of the Rv. In this case, although it is decided to transmit the data of the circulation buffer 35 & ice balance 15, as quickly as possible, the throughput can be improved. If the total size of the oil of the circular buffer of Fig. 3 is 4, the portion occupied by the circular buffer according to the encoding rate can be as shown in Table 1 below. [Table 1]

15 200926671

Table H can be selected—the group is inactive when it is used. (4) The rv is used, that is, the first transmission is independent of the coding rate. It will be assumed here that rvg is an RV that is always used for the first pass. I: Table 2] ~—---- ΤχNumber----- '---- The first-Rv combination ^L, 2 __ 4 ---- The first Rv combination LRv〇_ RV2 RV1 RV3 ~~~ ~~~-- RV2 RV3 RV1 According to Table 2, it is selected that there will be 4 transmissions. In the first rv combination, RV0 - Tx number ' RV2 is selected as the second number 16 200926671 and so on. The selected RVs in the third and fourth numbers are individually different between the first and second RV combinations. Starting from a 5th transmission number, an RV set of Table 2 may be repeated, or a new fixed RV combination may be defined to transmit data. In this case, even if the schedule information for retransmission is transmitted and the encoding rate is changed, the data is still transmitted according to the previous fixed RV set. The bottom table 5 below shows the RV combination (i.e., the third e to sixth RV combination) when five or more transmissions are performed. [Table 3] Τχ No. 1 2 3 4 5 6 7 Third RV combination RV0 RV2 RV1 RV3 RV0 RV2 RV1 Fourth RV combination RV0 RV2 RV1 RV3 RV2 RV1 RV3 Fifth RV combination RV0 RV2 RV3 RV1 RV0 RV2 RV3 Sixth RV combination RV0 RV2 RV3 RV1 RV2 RV3 RV1 Referring now to Table 3, in a third RV combination, the first via combination of Table 1 above is repeated twice. In a fourth RV combination, the first RV combination of Table 1 above is repeated twice, while the RVO with systematic bits is excluded from the second overlap. In a fifth RV combination, the second RV combination of Table 2 above is repeated twice. In a sixth RV combination, the second RV group 17 200926671 of Table 1 above is repeated twice, but the RV0 with systematic bits is excluded in the second overlap, according to which, when determined as possible When the data of the circular buffer is quickly transmitted, the throughput can be improved. The aforementioned fixed RV combination is for exemplary purposes only. Therefore, the RV combination can be changed according to the Tx number. That is, as another example, a predetermined RV combination may be combined according to a coding rate, and then when the schedule information for retransmission is transmitted, the modified coding rate may be considered to be transmitted by selecting an RV. Use the HARQ data. It is assumed that the RV set is determined based on an initial coding rate (CR), as shown in Table 4. [Table 4] The encoding rate is based on the Tx numbered RV combination 2/3 <CRO<l RV0->RV1->RV2->RV3 4/9<CRl<2/3 RV0->RV2->RV1 ->RV3 l/3<CR2<4/9 RV0->RV3->RV2-> RV1 Referring to Table 4, one RV is determined based on a previous RV. For example, if the previous RV is RV2, then when the data is transmitted by the encoding rate of RV0, the next RV is RV3. Table 5 shows a method in which RV is selected when the RV combination is determined according to the code rate of 200926671, that is, as shown in Table 4 above, when the coding rate is changed when the schedule information for retransmission is transmitted. . [Table 5] Τχ No. 1 2 3 4 Coding rate CR0 CR1 CR1 CR2 RV RV0 RV1 RV3 RV0

Referring now to Table 5, the first Tx number; has a 4 rate CR0, and thus the first transmission is determined to be RV0 according to Table 4 above. Since the coding rate is changed to CR1 at the second frame number, the next RV is determined to be RV1. This is to adjust a data amount according to the changed coding rate by selecting an RV immediately adjacent to the last RV at a point in time at which the coding rate is changed. The coding rate is maintained at CR1 at a third number. Therefore, an RV sequence can be determined based on the RV combination based on CR1. Since the previous RV is RV1, the next RV is determined to be RV3 according to Table 4 above. The encoding rate is changed to CR2 at the last fourth Τχ number. Therefore, RV0 is again selected, which is the RV next to RV3. Accordingly, an RV can be selected adaptively according to a prior RV and a coding rate to improve the transmission efficiency. The change in coding rate is only one example of a communication situation in which the method includes selecting an RV that is immediately adjacent to the previously transmitted RV and is independent of the RV combination currently used. Other predetermined communication conditions, such as a modulation change, etc., may also trigger this particular embodiment. In the case of uplink transmission, a synchronous HARQ can be utilized to reduce the modem expenditure. In this case, the command + expenditure can be reduced by utilizing a predetermined RV. In addition, the improved throughput of HARQ, β, will now describe the reporting method for a selected RV. In a synchronous HAR (J, the point in time at which the data transmission is performed at the transmission/reception end is known. Therefore, if an RV sequence is explicitly determined between the transmission/reception ends, then for Rv The order is unnecessary.

Taking this into consideration, gp requires a way to report an RV by using previous control information without additional commands. For example, 'a new data indicator (NDI) can be used to report a RVe. When sending a data block, $coffee is the report - whether the data block currently transmitted is the necessary information for the new data block. In this method, the RV uses the face to report implicitly, rather than explicitly reporting the rv. As a result, expenses incurred by additional RV orders can be reduced. Table 6 shows a method of using the table NDI to select an RV. The third RV of 3 is combined according to the bit. Here, if the NDI is 】, this means 20 200926671 and this means retransmission. Of course, the new data transmission wheel; if the NDI is 〇, it can be carried out in other ways. [Table 6] ---- _ Tx No. 1 2 3 4 5 6 7 Third RV combination NDI 1 0 0 0 0 0 0 • · · RV RV0 RV2 RV1 RV3 RV0 RV2 RV1 • · · Refer to Table 6 ' At the first Τχ number, the NDI is 1, and this is represented as new material. Since this is the first transmission', RV0 is utilized to transmit the data. Then 'the NDI continuously indicates 0' which means retransmission. Therefore, the next RV for the second frame number is determined to be RV2 by a previous rv (RV0), as in the third RV combination. That is, as another example, a retransmission sequence number (RSN) can be utilized to report _ RV ° in the case of the synchronization HARq. The time point at which the transmission/reception end transmits the data block is known. Thus, the RSN can be utilized instead of the NDI to report the RV. ^ In this case, a particular value of the RSN is defined to represent the first transmission. If the RSN is 1-bit information, the RSN may be 〇 or 1' where "〇" indicates the first transmission and "1" indicates retransmission. If the RSN is a 2-bit information, "0" indicates the first transmission, 21 200926671 and may be transmitted according to an RSN of a sequence of "0->l->2->3". After the fourth transmission, the RSN can be continuously maintained at "3". This method is used in the High Speed Uplink Packet Access (HSUPA) of the 3rd Generation Partnership Project (3 GPP). The RSN is transmitted from a transmitter to a receiver. 'Table 7 shows a method of selecting an RV based on a 1-bit RSN when using the fourth and fifth RV combinations of Table 3 above. © [Table 7] Τχ No. 1 2 3 4 5 6 7 Fourth RV combination RSN 0 1 1 1 1 1 1 RV RV0 RV2 RV1 RV3 RV2 RV1 RV3 Fifth RV combination RSN 0 1 1 1 1 1 1 RV RV0 RV2 RV1 RV3 RV0 RV2 RV1 Referring now to Table 7, the RSN is 0 at the first Tx number, and this represents the first transmission. The RSN is exactly 1 at the second to seventh number, and this means retransmission. In this case, the RV can be determined according to the fourth and fifth RV combinations of Table 3 above. That is, as mentioned above, the RSN is not always transmitted, but only when the schedule information exists. Therefore, even if the RSN is not transmitted in the middle of the transmission process, the receiver must still use the RSN in consideration of this situation. 22 200926671 Table 8 shows a method of selecting an RV based on a 2-bit RSN when using the third and fourth RV combinations of Table 3 above. [Table 8] Tx No. 1 2 3 4 5 6 7 • · · Third RV combination RSN 0 1 2 3 3 3 3 • · * RV RV0 RV2 RV1 RV3 RV0 RV2 RV1 • « · Fourth RV combination RSN 0 1 2 3 1 2 3 RV RV0 RV2 RV1 RV3 RV2 RV1 RV3 • · ❹ Referring to Table 8, when using a third RV combination 'If the rSN is 3, the actual transmitted RV can be changed according to a Tx number. This must be agreed in advance between the transmitter and the receiver. For example, a sub-frame number currently being transmitted can be utilized. When a fourth RV is used, the RSN and the transmitted RV have a 1: i matching relationship. Therefore, the Rv can be learned from the RSN included in the schedule information for retransmission. That is, when the rsn is represented by one 2-bit, the RSN is transmitted in the form of 3, 3... or 〇, 丨, 2, 3, Bu 2, 3, ... and the assignment corresponds to each RSN. RV. *Over, there will be - where the schedule information for retransmission is not transmitted. Therefore, when there is no RSN, an RV to be used for retransmission can be selected and used in a different manner according to an RV that is used in the first transmission 23 200926671. Table 9 shows a method in which an RV is selected in the case where the third and fourth RV combinations of the above Table 3 are used, and the schedule information for retransmission is not transmitted without the RSN. [Table 9] Third RV combination Fourth RV combination i-1th RV i-th RV i-1th RV i-th RV RV0 RV2 RVO (first transmission only) RV2 (first transmission only) RV1 RV3 RV1 RV3 RV2 RV1 RV2 RV1 RV3 RVO RV3 RV2 Referring now to Table 9, in a third RV combination, the (i-1) RV is RV0 and the schedule information for retransmission is not transmitted at the iTx number. In the absence of RSN, an iRV is selected as RV2 by considering a previous RV0 and according to a sequence of a third RV combination, once at the RV of the RV0. Further, in a fourth RV combination, in the case where the (i-1)th RV is RV3 and the schedule information for retransmission is not transmitted at the i-thx number without the RSN, an i-th The RV is selected as 24 200926671 RV2 'by the RV of the RV3 by considering a previous RV3 and according to a sequence of a fourth RV combination. Next, a method of explicitly reporting an RV command will be described. The following table 1 〇 shows the fourth rv combination according to Table 3 above to explicitly report the rv signaling method. [Table 10] Τχ 键 1 2 3 4 5 6 7 Fourth RV combination RV value 0 2 1 3 2 1 3 RV RVO RV2 RV1 RV3 RV2 RV1 RV3

All of the above functions may be performed by a processor, such as a microprocessor, a controller, a microcontroller, and an application specific integrated circuit (ASIC), depending on the software or code used to perform the functions. Executed. The code may be designed, developed, and implemented based on the teachings of the present invention and is well known to those skilled in the art. 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 The spirit and scope of the invention as defined by the appended claims. The exemplary embodiments are to be considered in all respects as illustrative and not restrictive. Therefore, the scope of the present invention is not intended to be limited by the scope of the present invention, and all the differences within the scope of the invention are intended to be included in the invention. [Simple description of the diagram] Figure 1 shows a wireless communication system. Figure 2 is a block diagram showing a channel encoding procedure. Figure 3 shows the transmission start position according to a redundancy version (RV) in a system using rate matching processing in a circular buffer. [Main component symbol description] 10 User equipment (UE) 2〇 Base station (BS) channel encoder 12〇 interleaver 130 rate matching unit 26

Claims (1)

200926671 VII. Scope of application for patents: 1. A method of transmitting the data from a terminal to a base station by means of a multiple redundancy version of the data using a hybrid automatic repeat request (HARQ) rule. Each of the redundancy versions (11¥) indicates a transmission start position of a data block in a circular buffer, the method comprising performing the following steps in the user terminal: utilizing a first redundancy version, utilizing The HARQ rule performs a first transmission of the data; and performs, by means of the various redundancy versions, at least one retransmission of the data using the HARQ rule, wherein the method further comprises, for each retransmission, by considering the previously used The remaining version and a predetermined sequence 'determine the redundancy version used, and wherein in a sequence 'at least two redundant versions following each other have a non-contiguous starting position. 2. The method of claim 1, wherein the sequence is used cyclically to perform repeated retransmission operations. 3. The method of claim 1, wherein the plurality of redundancy versions comprise four redundancy versions, and wherein the circular buffer has four different starting positions individually. 27 200926671 4. A method for considering the first, third, fourth and second redundancy versions of the redundancy version set in the following order as described in claim 3, wherein the sequence consists of its starting position: 5. If the redundancy version of the patent application point location is only the starting point, it is executed by a sequence: the third, the third item, the earth, the earthwork, which has the first for the first transmission; and the retransmission It is considered to be the fourth and second redundancy versions of the redundancy version of its % (four). 6. The method of claim 1 is specifically for the first transmission. One of the redundant versions, such as the first version of the patent application, has the same starting point for the separation of the size. The method of claim 1, wherein all such verbose and equated in the quasar buffer are further included in the method of using the method described in claim 1. The base station receives the schedule information; selects a redundancy version according to the schedule information; 28 200926671 performs a transmission by using the selected redundancy version; and utilizes multiple redundancy versions by considering the selected redundancy version and the predetermined sequence Performing further data retransmissions. [beta] The method of claim 8, wherein the schedule information* includes an indicator of a selected redundancy version. The method of claim 8, wherein the schedule information includes an indicator of the current communication condition, and the selected redundancy version has a starting point immediately adjacent to the last redundant version of the transmission. The starting point of the location. 11. The method of claim 8, wherein the schedule information includes a new data indicator, and the user terminal performs a first transmission upon receipt of the new data indicator. Ο 12. A user terminal adapted to transfer the data using a hybrid automatic repeat request (HARQ) rule by a plurality of redundancy versions of the data, each of the redundancy versions (RV) Representing a transmission start position of a data block in a circular buffer, the user terminal includes a controller adapted to: use the HARQ rule to perform the data by a first redundancy version 29 200926671 a transmission; and utilizing the HARQ rule by using various redundancy versions to perform at least one retransmission of the data, wherein the controller is further adapted to: for each retransmission, by considering the redundancy version used first and one The predetermined sequence determines the redundancy version of the threat used; and in a sequence, at least two redundant versions following each other have a non-contiguous starting position. 〇13. The terminal of claim 12, wherein The sequence is used cyclically to perform repeated retransmission operations. 14. The terminal of claim 12, wherein the plurality of redundancy versions includes four redundancy versions. In this case, there are four different starting positions individually in the circular buffer. Wherein the sequence consists of point locations: 15. As described in claim 14, the redundancy version set in the following order takes into account the first, third, fourth and second redundancy version. 16· If the cold end, in the cold end, the redundant version with the first point location is only used for the first value, ^ is lost; and the retransmission is considered to be the starting position of 30 200926671, The system is executed by a sequence of redundancy versions set in the following order: third, fourth and second redundancy versions. Composition 17. The terminal of claim 12, wherein a redundancy version is specifically for the first transmission. Small, and has equals in the circular buffer. :版聪Γ.'its... From the starting point of the separation 19·If the terminal is as described in item 12 of the special (4), the controller is more adapted to: receive scheduling information from the base station; The schedule information selects a redundancy version; performing a transmission by the selected redundancy version; and performing more data retransmission with multiple redundancy and versions by considering the selected redundancy version and the predetermined sequence. 2〇·如申 Contains a terminal as described in item 19 of the π patent scope, wherein the schedule information is an indicator of the selected redundancy version. 31 200926671 21. The terminal of claim 19, wherein the schedule information includes an indicator of current communication status and selects a redundancy version that is immediately adjacent to the beginning of the last redundant version of the transmission. The starting point of the location. 22. The terminal of claim 19, wherein the schedule information comprises a new data indicator, and the user terminal performs a first transmission upon receipt of the new data indicator. A base station adapted to transmit the data using a hybrid automatic repeat request (HARQ) rule by means of a plurality of redundant versions of the data. The redundancy versions (RV) are each represented in a a transmission start position of a data block in the circular buffer, the base station including a controller adapted to: perform a first transmission of the data by using the HARQ rule by a first redundancy version; and The redundancy version uses the HARQ rule to perform at least one retransmission of the data, wherein the controller is further adapted to: for each retransmission, by considering the previously used redundancy version and a predetermined sequence, determining the used A redundancy version; and in a sequence, at least two redundant versions following each other have non-contiguous starting positions. 32 200926671 24. A data transmission system that utilizes a hybrid automatic repeat request (HARQ) rule to perform data transmission between a base station and at least one user terminal by means of a plurality of redundancy versions of the data, wherein The user terminal is the user terminal as described in claim 12, and the base station is as the base station described in claim 23 of the patent application. ❹ 33