CN102215081B - Coding method and device for controlling control information transmitted on channel - Google Patents

Abstract

The invention relates to the communication field, and discloses a coding method for control information transmitted on a control channel. In the method, the information bit sequence of the control information is encoded according to the (18, A) code, and a codeword bit sequence with a length of 18 is output; or the information bit sequence of the control information is encoded according to the (20, A) code, A codeword bit sequence with a length of 20 is output, and then the codeword bit sequence is punctured to output a codeword bit sequence with a length of 18. The invention also discloses a coding device for the control information transmitted on the control channel. The overall performance of the communication system can be improved through the encoding method and device for the control information transmitted on the control channel disclosed in the present invention.

Description

Coding method and device for control information transmitted on control channel

technical field

The invention relates to the communication field, in particular to a method and device for encoding control information transmitted on a control channel.

Background technique

In the LTE (Long Term Evolution, long-term evolution) system, for the control information transmitted on the PUCCH (Physical Uplink Control channel, Physical Uplink Control Channel) of Format2, Format2a or Format2b, codes of (20, A) are used for encoding. Wherein, the encoding matrix of the (20, A) code is shown in Table 1:

Table 1

i M _i,0 M _i,1 Mi _{, 2} Mi _{, 3} Mi _{, 4} Mi _{, 5} Mi _{, 6} Mi _{, 7} Mi _{, 8} Mi _{, 9} Mi _{, 10} Mi _{, 11} Mi _{, 12} 0 1 1 0 0 0 0 0 0 0 0 1 1 0 1 1 1 1 0 0 0 0 0 0 1 1 1 0 2 1 0 0 1 0 0 1 0 1 1 1 1 1 3 1 0 1 1 0 0 0 0 1 0 1 1 1 4 1 1 1 1 0 0 0 1 0 0 1 1 1 5 1 1 0 0 1 0 1 1 1 0 1 1 1 6 1 0 1 0 1 0 1 0 1 1 1 1 1 7 1 0 0 1 1 0 0 1 1 0 1 1 1 8 1 1 0 1 1 0 0 1 0 1 1 1 1 9 1 0 1 1 1 0 1 0 0 1 1 1 1 10 1 0 1 0 0 1 1 1 0 1 1 1 1 11 1 1 1 0 0 1 1 0 1 0 1 1 1 12 1 0 0 1 0 1 0 1 1 1 1 1 1 13 1 1 0 1 0 1 0 1 0 1 1 1 1 14 1 0 0 0 1 1 0 1 0 0 1 0 1 15 1 1 0 0 1 1 1 1 0 1 1 0 1 16 1 1 1 0 1 1 1 0 0 1 0 1 1 17 1 0 0 1 1 1 0 0 1 0 0 1 1 18 1 1 0 1 1 1 1 1 0 0 0 0 0 19 1 0 0 0 0 1 1 0 0 0 0 0 0

In the LTE system, A represents the number of information bits of the control information, and the value ranges from 1 to 13; 20 represents the number of encoded codeword bits. For the information bit sequence a ₀ , a ₁ , a ₂ , ..., a _(A-1) of the input control information, the output codeword bit sequence after encoding is:

$b_i=\underset{\mathrm{no}=0}{\overset{A-1}{\mathrm{\&Sigma;}}}(a_{\mathrm{no}}\&Center\; Dot;m_{i,\mathrm{no}})\mathrm{<figure-callout\; id="2"\; label="mod"\; filenames="HSA00000057041500021.png"\; state="\{\{state\}\}">mod</figure-callout>}2,$ i=0, 1, 2, . . . , B-1.

Wherein, M _{i, n} (i=0, 1, 2, ..., B-1, n = 0, 1, 2, ..., A-1) is row i+1 in the coding matrix shown in Table 1, The element corresponding to the n+1th column, B=20.

In the LTE-A (Long Term Evolution-Advanced, advanced long-term evolution) system, in order to improve the throughput of cell edge users, increase cell coverage and improve temporary network processing capabilities, the relay (Relay) technology is introduced. Considering the interference between the sending and receiving signals, the relay node is half-duplex communication, that is, the sending and receiving signals need conversion time. Therefore, in the uplink from the relay to the eNB (eNodeB evolved base station), one SC-FDMA (Single Carrier-Frequency Division Multiple Access, Single Carrier-Frequency Division Multiple Access) symbol time is required to perform the transceiving conversion. Therefore, the R-PUCCH (Relay-Physical Uplink Control channel) in the LTE-A system needs to transmit one symbol less than the PUCCH in the LTE system to meet the above-mentioned transmission and reception switching requirements.

Since the R-PUCCH sends one symbol less than the PUCCH, the number of required codeword bits is reduced from 20 bits to 18 bits accordingly. In the prior art, the (18, A) code is obtained by puncturing the last two codewords of the (20, A) code, so as to encode the control information of the R-PUCCH.

Through simulation, the inventors of the present invention found that the above coding scheme for the control information transmitted on the R-PUCCH has a large performance loss when the number of information bits is large.

Contents of the invention

The present invention provides a coding method and device for control information transmitted on a control channel to improve coding performance.

One aspect of the present invention provides a method for encoding control information transmitted on a control channel, including:

Encoding the information bit sequence of the control information according to the (18, A) code; and outputting a codeword bit sequence with a length of 18; wherein, A ranges from 1 to 13.

Another aspect of the present invention also provides a method for encoding control information transmitted on a control channel, including:

The information bit sequence of the control information is encoded according to the (20, A) code, and the output length is a code word bit sequence of 20; Word bits are punctured or the 13th and 18th codeword bits are punctured to output a codeword bit sequence with a length of 18; wherein, the value of A ranges from 1 to 13.

Another aspect of the present invention also provides an encoding device for control information transmitted on a control channel, including: an encoding unit, configured to encode the information bit sequence of the control information according to the (18, A) code, and output the length is a codeword bit sequence of 18; wherein, the value range of A is 1 to 13.

Still another aspect of the present invention provides an encoding device for control information transmitted on a control channel, including: an encoding unit and a puncturing unit.

The encoding unit is configured to encode the information bit sequence of the control information according to the (20, A) code, and output a codeword bit sequence with a length of 20, wherein the value range of A is 1 to 13; the punching The unit is used to puncture the 13th and 16th codeword bits of the codeword bit sequence with a length of 20 or puncture the 13th and 18th codeword bits, and output a length of 18 codeword bit sequence.

The overall performance of the communication system can be improved through the encoding method and device for the control information transmitted on the control channel provided by the present invention; in addition, the same punching scheme is adopted under all information bit numbers, which can simplify the system design and facilitate implementation.

Description of drawings

FIG. 1 is a simulation result diagram of a puncture pattern of control information transmitted on an R-PUCCH in the prior art;

FIG. 2 is a schematic flowchart of a method for encoding control information transmitted on the R-PUCCH provided by an embodiment of the present invention;

FIG. 3 is a simulation result diagram of the puncture pattern of the control information transmitted on the R-PUCCH provided by an embodiment of the present invention;

FIG. 4 is a schematic flowchart of a method for obtaining a puncture pattern of control information transmitted on an R-PUCCH provided by an embodiment of the present invention;

FIG. 5 is a schematic flowchart of a method for encoding control information transmitted on the R-PUCCH according to another embodiment of the present invention;

FIG. 6 is a schematic structural diagram of an apparatus for encoding control information transmitted on the R-PUCCH provided by an embodiment of the present invention;

Fig. 7 is a schematic structural diagram of an apparatus for encoding control information transmitted on the R-PUCCH provided by another embodiment of the present invention.

Detailed ways

The inventors of the present invention simulated the scheme in which the last two codeword bits of the codeword bits obtained after encoding the control information transmitted on the R-PUCCH in the prior art are punctured, and the obtained simulation results are shown in Figure 1 . Among them, the simulation parameters are: the modulation mode is QPSK (Quadrature Phase Shift Keying, quadrature phase shift keying), AWGN (Additive White Gaussian Noise, additive white Gaussian noise) channel.

As can be seen from the simulation results shown in Figure 1, when the number of information bits is large, such as when the number of information bits is 11, 12 and 13, the puncture pattern is relatively optimal compared to the optimal puncture pattern (the optimal puncture pattern shown in Figure 1 The optimal solution) has a performance loss of about 0.6 decibels (dB); and, the punctured pattern when the number of information bits is 4 also has a performance loss of about 0.4 dB compared with the optimal punctured pattern. Wherein, the optimal puncture pattern refers to the optimal puncture pattern corresponding to the number of each information bit. The optimal puncture pattern corresponding to the number of information bits can be obtained by the following method. For example, for a certain number of information bits, on the basis of the number of codeword bits that need to be punctured, after all punctures The optimal code weight distribution of the code word is searched by computer, and then the puncture pattern corresponding to the optimal code weight distribution is obtained, which is the optimal puncture pattern.

In view of this, an embodiment of the present invention provides a method for encoding control information transmitted on the R-PUCCH. As shown in FIG. 2, the method may include:

Step 210: Encode the information bit sequence of the control information according to the (20, A) code, and output a codeword bit sequence with a length of 20.

In the LTE-A system, the value of the number of bits A of the information bit sequence of the control information is 1 to 13 bits; the encoding matrix of the (20, A) code can adopt the encoding matrix shown in Table 1, which can be kept the same as that of the LTE system good compatibility.

Step 220, puncture the codeword bit sequence with a length of 20, and output a codeword bit sequence with a length of 18.

In this embodiment, the 13th and 16th codeword bits of the codeword bit sequence output in step 210 may be punctured; or the 13th and 18th codeword bits may be punctured. Fig. 3 shows the punctured pattern (scheme 2 shown in Fig. 3) of the 13th and the 16th codeword bit, and the punctured pattern of the 13th and the 18th codeword bit (Fig. 3 The simulation results of scenario 3) are shown. Wherein, the simulation parameters (conditions) are the same as the simulation parameters (conditions) shown in FIG. 1 .

It can be seen from Figure 3 that, compared with the optimal puncture pattern corresponding to the number of information bits (that is, the optimal solution shown in Figure 3), there is a performance loss of about 0.2dB only when the number of information bits is 8 , there is a performance loss of about 0.1 dB when the number of information bits is 10. Therefore, the overall performance of the communication system can be improved by adopting the encoding method of this embodiment; in addition, since the same puncturing scheme is adopted for all information bit numbers, system design can be simplified and implementation is facilitated.

A few more examples are given below to describe the process of obtaining the above perforated pattern. Fig. 4 shows a schematic flow chart of a method for obtaining a perforated pattern provided by an embodiment of the present invention, the method comprising:

Step 410, obtaining the position of the optimal punctured codeword bit corresponding to the number of information bits of the first priority.

In this step, on the basis of the number of codeword bits that need to be punctured (for example, the number of codeword bits that are punctured is 2), all puncture patterns corresponding to the number of information bits of the first priority can be obtained; then The puncture pattern corresponding to the optimal code redistribution is searched by computer to obtain the position of the optimal punctured codeword bit corresponding to the number of information bits of the first priority. In this step, there may be more than one optimal puncture pattern for the number of information bits of the first priority; therefore, there may be more than one optimal punctured codeword bit position corresponding to the number of information bits of the first priority.

In this step, the number of information bits with the first priority may be the number of information bits with the highest occurrence probability or the number of information bits with the highest performance requirement.

Step 420, according to the priority order of the number of information bits and the optimal puncture position corresponding to the number of information bits of the previous priority, sequentially obtain the positions of optimal punctured codeword bits corresponding to the number of other information bits.

In this step, the priority order may be sorted according to the probability of occurrence of the number of information bits or performance requirements.

In this step, the position of the optimal punctured codeword bit corresponding to the number of information bits of a certain priority is in the position of the optimal punctured codeword bit corresponding to the number of information bits of the previous priority (possibly more than one) In this way, the same puncturing scheme can be used for all information bits to simplify system design.

Those skilled in the art can understand that the ordering is performed only by the occurrence probability of the number of information bits or performance requirements, and the performance of some numbers of information bits may need to be further improved. For example, taking the number of information bits of R-PUCCH as an example, the order of priority is obtained only by the probability of occurrence of the number of information bits: {4, 6, 8, 9, 11, 2, 1, 3, 5, 7, 10, 12, 13}. The simulation results of the perforated patterns obtained according to this arrangement sequence are shown in Scheme 1 shown in FIG. 3 . It can be seen from Fig. 3 that, when the number of information bits is large, such as 11bits, 12bits and 13bits, the punching pattern of scheme 1 has a performance loss of about 0.6dB relative to the optimal punching scheme.

Therefore, the probability of occurrence of the number of information bits can be combined with performance requirements for ranking. Taking the number of information bits of the control information transmitted on the R-PUCCH as an example, according to the performance requirements, the priority order is adjusted as follows: {11, 13, 12, 4, 6, 8, 9, 2, 1, 3, 5, 7 , 10}, or {13, 11, 12, 4, 6, 8, 9, 2, 1, 3, 5, 7, 10}. The simulation results of punching patterns obtained according to these two priority orders are shown in Scheme 2 and Scheme 3 in FIG. 3 . It can be seen from Fig. 3 that schemes 2 and 3 have a performance loss of about 0.2dB when the number of information bits is 8, and a performance loss of about 0.1dB when the number of information bits is 10, maintaining good global performance.

There are other possible ways to obtain the punching pattern shown in Figure 3, such as Scheme 2 and Scheme 3. For example, firstly obtain the positions of the optimal punctured codeword bits corresponding to the number of each information bit (that is: the optimal puncture pattern corresponding to the number of each information bit); The positions of the word bits are intersected, and the punching patterns shown in scheme 2 and scheme 3 in FIG. 3 can also be obtained. Wherein, the method for obtaining the position of the optimal punctured codeword bit for each number of information bits may refer to step 410 in FIG. 4 .

FIG. 5 is a schematic flowchart of a method for encoding control information transmitted on the R-PUCCH provided by another embodiment of the present invention. As shown in Figure 5, the method may include:

Step 510, encode the information bit sequence of the control information according to the (18, A) code.

Step 520, output a codeword bit sequence with a length of 18.

In this embodiment, the encoding matrix of the (18, A) code can be as shown in Table 2 or Table 3:

Table 2

i M _i,0 M _i,1 Mi _{, 2} Mi _{, 3} Mi _{, 4} Mi _{, 5} Mi _{, 6} Mi _{, 7} Mi _{, 8} Mi _{, 9} Mi _{, 10} Mi _{, 11} Mi _{, 12} 0 1 1 0 0 0 0 0 0 0 0 1 1 0 1 1 1 1 0 0 0 0 0 0 1 1 1 0 2 1 0 0 1 0 0 1 0 1 1 1 1 1 3 1 0 1 1 0 0 0 0 1 0 1 1 1 4 1 1 1 1 0 0 0 1 0 0 1 1 1 5 1 1 0 0 1 0 1 1 1 0 1 1 1 6 1 0 1 0 1 0 1 0 1 1 1 1 1 7 1 0 0 1 1 0 0 1 1 0 1 1 1 8 1 1 0 1 1 0 0 1 0 1 1 1 1 9 1 0 1 1 1 0 1 0 0 1 1 1 1 10 1 0 1 0 0 1 1 1 0 1 1 1 1 11 1 1 1 0 0 1 1 0 1 0 1 1 1 12 1 1 0 1 0 1 0 1 0 1 1 1 1 13 1 0 0 0 1 1 0 1 0 0 1 0 1 14 1 1 1 0 1 1 1 0 0 1 0 1 1 15 1 0 0 1 1 1 0 0 1 0 0 1 1 16 1 1 0 1 1 1 1 1 0 0 0 0 0 17 1 0 0 0 0 1 1 0 0 0 0 0 0

table 3

i M _i,0 M _i,1 Mi _{, 2} Mi _{, 3} Mi _{, 4} Mi _{, 5} Mi _{, 6} Mi _{, 7} Mi _{, 8} Mi _{, 9} Mi _{, 10} Mi _{, 11} Mi _{, 12} 0 1 1 0 0 0 0 0 0 0 0 1 1 0 1 1 1 1 0 0 0 0 0 0 1 1 1 0 2 1 0 0 1 0 0 1 0 1 1 1 1 1 3 1 0 1 1 0 0 0 0 1 0 1 1 1 4 1 1 1 1 0 0 0 1 0 0 1 1 1 5 1 1 0 0 1 0 1 1 1 0 1 1 1 6 1 0 1 0 1 0 1 0 1 1 1 1 1 7 1 0 0 1 1 0 0 1 1 0 1 1 1 8 1 1 0 1 1 0 0 1 0 1 1 1 1 9 1 0 1 1 1 0 1 0 0 1 1 1 1 10 1 0 1 0 0 1 1 1 0 1 1 1 1 11 1 1 1 0 0 1 1 0 1 0 1 1 1 12 1 1 0 1 0 1 0 1 0 1 1 1 1 13 1 0 0 0 1 1 0 1 0 0 1 0 1 14 1 1 0 0 1 1 1 1 0 1 1 0 1 15 1 1 1 0 1 1 1 0 0 1 0 1 1 16 1 1 0 1 1 1 1 1 0 0 0 0 0 17 1 0 0 0 0 1 1 0 0 0 0 0 0

i＝0，1，2，...，B-1对所述信息比特序列进行编码。该公式中，a_n(n＝0，1，2，…，A-1)为信息比特序列中的信息比特，b_i(i＝0，1，2，…，B-1)为输出的码字比特序列中的码字比特，M_i，n(i＝0，1，2，…，B-1，n＝0，1，2，…，A-1)为表2或表3所示编码矩阵中第i+1行、第n+1列对应的元素，B＝18。In this example, according to the formula

i=0, 1, 2, . . . , B-1 encodes the information bit sequence. In this formula, a _n (n=0, 1, 2, ..., A-1) is the information bit in the information bit sequence, b _i (i = 0, 1, 2, ..., B-1) is the output The codeword bits in the codeword bit sequence, M _{i, n} (i=0, 1, 2, ..., B-1, n = 0, 1, 2, ..., A-1) are listed in Table 2 or Table 3 Indicates the elements corresponding to row i+1 and column n+1 in the encoding matrix, B=18.

The simulation result of encoding the information bit sequence using the encoding matrix shown in Table 2 is scheme 2 shown in Figure 3; the simulation result of encoding the information bit sequence using the encoding matrix shown in Table 3 is the scheme 2 shown in Figure 3 Option 3. Therefore, the overall performance of the communication system can be improved through the encoding method provided in this embodiment; in addition, since the same puncturing scheme is used for all information bit numbers, system design can be simplified and implementation is facilitated.

FIG. 6 is a schematic structural diagram of an encoding device for transmitting control information on an R-PUCCH provided by an embodiment of the present invention. As shown in FIG. 6 , the encoding device 60 may include: an encoding unit 610 and a punching unit 620 .

The encoding unit 610 is configured to encode the information bit sequence of the control information according to the (20, A) code, and output a codeword bit sequence with a length of 20.

The puncturing unit 620 is configured to puncture the codeword bit sequence output by the encoding unit 610 to output a codeword bit sequence with a length of 18.

Taking the control information transmitted on the R-PUCCH in the LTE-A system as an example, the number of information bits A of the information bit sequence ranges from 1 to 13 bits; the encoding matrix of the (20, A) code can be as shown in Table 1 The encoding matrix can maintain good compatibility with the LTE system.

In this embodiment, the 13th and 16th codeword bits of the codeword bit sequence output by the encoding unit 610 may be punctured; or the 13th and 18th codeword bits may be punctured. Fig. 3 shows the punctured pattern (scheme 2 shown in Fig. 3) of the 13th and the 16th codeword bit, and the punctured pattern of the 13th and the 18th codeword bit (Fig. 3 The simulation results of scenario 3) are shown.

Using the encoding device 60 provided in this embodiment to encode the information bits of the control information transmitted on the R-PUCCH can improve the overall performance of the communication system; in addition, since the same puncturing scheme is used for all information bits, the system design can be simplified , which is easy to implement.

Fig. 7 is a schematic structural diagram of an apparatus for encoding control information transmitted on the R-PUCCH provided by another embodiment of the present invention. As shown in Figure 7, the encoding device 70 may include:

The encoding unit 710 is configured to encode the information bit sequence of the control information according to the (18, A) code; and output a codeword bit sequence with a length of 18. Wherein, the encoding matrix of the (18, A) code may be as shown in Table 2 or Table 3, which will not be repeated here.

i＝0，1，2，...，B-1对信息比特序列进行编码。该公式中，a_n(n＝0，1，2，…，A-1)为信息比特序列中的信息比特，b_i(i＝0，1，2，…，B-1)为输出的码字比特序列中的码字比特，M_i，n(i＝0，1，2，…，B-1，n＝0，1，2，…，A-1)为表2或表3所示编码矩阵中第i+1行、第n+1列对应的元素，B＝18。In this embodiment, the encoding unit 710 can be further used according to the formula

i=0, 1, 2, . . . , B-1 codes the information bit sequence. In this formula, a _n (n=0, 1, 2, ..., A-1) is the information bit in the information bit sequence, b _i (i = 0, 1, 2, ..., B-1) is the output The codeword bits in the codeword bit sequence, M _{i, n} (i=0, 1, 2, ..., B-1, n = 0, 1, 2, ..., A-1) are listed in Table 2 or Table 3 Indicates the elements corresponding to row i+1 and column n+1 in the encoding matrix, B=18.

Using the encoding device 70 provided in this embodiment to encode the information bit sequence of the control information transmitted on the R-PUCCH can improve the overall performance of the communication system; in addition, because the same puncturing scheme is used for all information bits, the system can be simplified. Designed for easy implementation.

In the embodiment of the present invention, the (20, A) or (18, A) code may be an RM (Reed-Muller) code.

Wherein, the control information transmitted on the R-PUCCH may include: channel quality information; or channel quality information and ACK/NACK (Acknowledged/non-acknowledged, acknowledgment/non-acknowledgement). Wherein, the channel quality information may include: CQI (Channel Quality Indicator, channel quality indication) and/or PMI (Precoding Matrix Indicator, precoding matrix indication) and/or RI (Rank Indication, rank indication), etc.

The 18-length codeword bit sequence output through the above encoding process is transmitted through the R-PUCCH. Those skilled in the art can understand that the transmission through the R-PUCCH mentioned in the embodiment of the present invention may include other operations, for example, the output codeword bit sequence with a length of 18 may also be modulated, such as QPSK (Quadrature Phase Shift Keying, Quadrature phase shift keying) modulation and other operations, and then mapped to a control channel (for example, R-PUCCH) for transmission.

Those skilled in the art can understand that the above method and device for encoding the control information transmitted on the R-PUCCH are only illustrative, and the control information transmitted on the control channel in other communication systems can also use the above implementation under similar circumstances. Example description methods and apparatus for transmission.

Those of ordinary skill in the art can understand that all or part of the steps for realizing the above method embodiments can be completed by hardware related to program instructions, and the program can be stored in a computer-readable storage medium. When the program is executed, the execution includes: In the steps of the above method embodiments, the aforementioned storage medium may include various media capable of storing program codes such as ROM, RAM, magnetic disk or optical disk.

The above are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (6)

1. A coding method for control information transmitted on a control channel, characterized in that, comprising: The information bit sequence of the control information is encoded according to the (20, A) code, and the output length is a code word bit sequence of 20, wherein the value range of A is 1 to 13; Puncture the 13th and 16th codeword bits of the codeword bit sequence with a length of 20 or puncture the 13th and 18th codeword bits, and output a codeword bit sequence with a length of 18 . 2. method according to claim 1, is characterized in that, the coding matrix of described (20, A) sign indicating number is: i M _i,0 M _i,1 Mi _{, 2} Mi _{, 3} Mi _{, 4} Mi _{, 5} Mi _{, 6} Mi _{, 7} Mi _{, 8} Mi _{, 9} Mi _{, 10} Mi _{, 11} Mi _{, 12} 0 1 1 0 0 0 0 0 0 0 0 1 1 0 1 1 1 1 0 0 0 0 0 0 1 1 1 0 2 1 0 0 1 0 0 1 0 1 1 1 1 1 3 1 0 1 1 0 0 0 0 1 0 1 1 1 4 1 1 1 1 0 0 0 1 0 0 1 1 1 5 1 1 0 0 1 0 1 1 1 0 1 1 1 6 1 0 1 0 1 0 1 0 1 1 1 1 1 7 1 0 0 1 1 0 0 1 1 0 1 1 1 8 1 1 0 1 1 0 0 1 0 1 1 1 1 9 1 0 1 1 1 0 1 0 0 1 1 1 1 10 1 0 1 0 0 1 1 1 0 1 1 1 1 11 1 1 1 0 0 1 1 0 1 0 1 1 1 12 1 0 0 1 0 1 0 1 1 1 1 1 1 13 1 1 0 1 0 1 0 1 0 1 1 1 1 14 1 0 0 0 1 1 0 1 0 0 1 0 1 15 1 1 0 0 1 1 1 1 0 1 1 0 1 16 1 1 1 0 1 1 1 0 0 1 0 1 1 17 1 0 0 1 1 1 0 0 1 0 0 1 1 18 1 1 0 1 1 1 1 1 0 0 0 0 0 19 1 0 0 0 0 1 1 0 0 0 0 0 0 . 3. The method according to claim 1 or 2, wherein the control information includes: Channel quality information transmitted on the relay physical uplink control channel R-PUCCH; or channel quality information and acknowledgment/non-acknowledgement ACK/NACK transmitted on the R-PUCCH. 4. A coding device for control information transmitted on a control channel, characterized in that it comprises: The encoding unit is used to encode the information bit sequence of the control information according to the (20, A) code, and output a code word bit sequence with a length of 20, wherein the value range of A is 1 to 13; A punching unit, used to puncture the 13th and 16th codeword bits of the codeword bit sequence with a length of 20 or puncture the 13th and 18th codeword bits, and the output length is 18 codeword bit sequences. 5. The device according to claim 4, wherein the encoding matrix of the (20, A) code is: 1 M _i,0 M _i,1 Mi _{, 2} Mi _{, 3} Mi _{, 4} Mi _{, 5} Mi _{, 6} Mi _{, 7} Mi _{, 8} Mi _{, 9} Mi _{, 10} Mi _{, 11} Mi _{, 12} 0 1 1 0 0 0 0 0 0 0 0 1 1 0 1 1 1 1 0 0 0 0 0 0 1 1 1 0 2 1 0 0 1 0 0 1 0 1 1 1 1 1 3 1 0 1 1 0 0 0 0 1 0 1 1 1 4 1 1 1 1 0 0 0 1 0 0 1 1 1 5 1 1 0 0 1 0 1 1 1 0 1 1 1 6 1 0 1 0 1 0 1 0 1 1 1 1 1 7 1 0 0 1 1 0 0 1 1 0 1 1 1 8 1 1 0 1 1 0 0 1 0 1 1 1 1 9 1 0 1 1 1 0 1 0 0 1 1 1 1 10 1 0 1 0 0 1 1 1 0 1 1 1 1 11 1 1 1 0 0 1 1 0 1 0 1 1 1 12 1 0 0 1 0 1 0 1 1 1 1 1 1 13 1 1 0 1 0 1 0 1 0 1 1 1 1 14 1 0 0 0 1 1 0 1 0 0 1 0 1 15 1 1 0 0 1 1 1 1 0 1 1 0 1 16 1 1 1 0 1 1 1 0 0 1 0 1 1 17 1 0 0 1 1 1 0 0 1 0 0 1 1 18 1 1 0 1 1 1 1 1 0 0 0 0 0 19 1 0 0 0 0 1 1 0 0 0 0 0 0 . 6. The device according to claim 4 or 5, wherein the control information includes: Channel quality information transmitted on the relay physical uplink control channel R-PUCCH; or channel quality information and acknowledgment/non-acknowledgement ACK/NACK transmitted on the R-PUCCH.

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