WO2011054206A1 - 正确/错误应答消息和秩指示信令的编码方法及装置 - Google Patents
正确/错误应答消息和秩指示信令的编码方法及装置 Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0059—Convolutional codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0028—Formatting
- H04L1/003—Adaptive formatting arrangements particular to signalling, e.g. variable amount of bits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0057—Block codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0072—Error control for data other than payload data, e.g. control data
- H04L1/0073—Special arrangements for feedback channel
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
- H04L1/1671—Details of the supervisory signal the supervisory signal being transmitted together with control information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L2001/125—Arrangements for preventing errors in the return channel
Definitions
- the present invention relates to the field of communications, and in particular to a coding method and apparatus for correct/error response messages and rank indication signaling.
- BACKGROUND OF THE INVENTION The rapid development of digital communication systems places higher demands on the reliability of data communication, however, multipath interference and Doppler shift in harsh channels, especially in high data rate or high speed mobile environments. Etc. seriously affects system performance. Therefore, effective error control technology, especially Hybrid Automatic Repeat Request (HARQ) technology has become a hot research topic in the field of communication.
- HARQ Hybrid Automatic Repeat Request
- the code transmitted by the originator not only can detect errors, but also has certain error correction capability. After receiving the codeword, the receiver decoder first checks the error condition. If the error correction capability of the code is within, the error correction is automatically performed.
- the receiving end sends a decision signal to the sending end through the feedback channel, and requests the sending end to resend the information.
- the Acknowledgement/Negative Acknowledgement (ACK/NACK) control signaling is used to indicate that the transmission is correct or incorrect, and to determine whether retransmission is required.
- the ACK/NACK response message of the Physical Downlink Shared Channel (PDSCH) when the PDSCH contains only one transport block, the terminal (referred to as UE) is to feed back a 1-bit ACK/NACK response message.
- the UE When the PDSCH contains two transport blocks, the UE shall feed back a 2-bit ACK/NACK response message.
- the precoding technology is implemented by setting a codebook (a set of precoding matrices) through a UE and a base station (the eNodeB is referred to as an eNB), and the UE selects an optimal precoding matrix from the codebook according to a certain criterion.
- precoding matrix index precoding matrix index, abbreviated as PMI
- eNB only Burgundy data received PMI find the corresponding precoding matrix in a codebook, apply the precoding matrix in the downlink transmit the precoded Transmission, and also needs to feed back Rank Indicator (RI) signaling in the uplink channel, the signaling indicating the number of layers of downlink transmission.
- RI Rank Indicator
- the ACK/NACK response message is transmitted on the Physical Uplink Control Channel (PUCCH) in a format of 1/1 a/lb.
- PUCCH Physical Uplink Control Channel
- the ACK/NACK response message is transmitted in the Physical Uplink Shared Channel (PUSCH); the RI signaling is transmitted on the PUCCH, and if the UE needs to transmit data, the RI signaling is also transmitted in the PUSCH. Or when the acyclic CQI/PMI/RI is reported, the RI signaling is also transmitted on the PUSCH.
- FIG. 1 is a correct/error response message and a rank indication signaling in the PUSCH according to the related art in the LTE system. Transfer diagram on the top.
- the coding mode used is:
- Table 2 Schematic diagram of HARQ-ACK or RI after encoding
- the meaning of the ACK/NACK response message is: ⁇ X CK corresponds to the ACK/NACK feedback of codeword 0, O ⁇ corresponds to the feedback of codeword 1; the meaning of RI signaling is shown in Table 3, the coding used The mode is shown in Table 4 (2-bit ACK/NACK response message under different modulation symbols or encoding mode of RI signaling): Table 3 Schematic diagram of the correspondence between [of o] and RI
- Table 4 Schematic diagram of HARQ-ACK or RI after encoding
- the downlink transmission supports up to 4 layers, so the feedback of the 2-bit RI signaling is used, but for the ACK/NACK response message, in the TDD system, since the proportional relationship between the uplink and downlink subframes is configurable, therefore, when When the number of downlink subframes is greater than the number of uplink subframes, there is a case where an uplink subframe needs to feed back an ACK/NACK response message of a PDSCH corresponding to multiple downlink subframes. Therefore, an ACK/NACK response message is specified in the LTE system.
- LTE-A Long Term Evolution Advanced
- the existing standards of LTE Based on the existing LTE system, the bandwidth of the LTE system can be combined to obtain a larger bandwidth. This technology is called Carrier Aggregation (CA) technology, which can improve the IMT-Advance system.
- CA Carrier Aggregation
- the uplink bandwidth and the downlink bandwidth may include multiple component carriers.
- the base station schedules a PDSCH for a certain UE on multiple downlink component carriers, and when the UE has a PUSCH to transmit in the current subframe, the terminal needs to feed back the ACK of the PDSCH transmission of the multiple downlink component carriers on the PUSCH. NACK response message.
- the number of ACK/NACK response messages that need to be fed back is 40, if the codeword corresponding to each carrier is bound. Operation, then the number of ACK/NACK response messages that need to be fed back is 20.
- the feedback RI signaling is greater than 2 bits.
- the transmission of the 11-bit ACK/NACK response message or the 2-bit RI signaling is supported on the PUSCH. When the ACK/NACK response message requiring feedback is greater than 11 bits, the RI signaling is greater than 2 bits.
- the main object of the present invention is to provide a A coding method and apparatus for correct/error response messages and rank indication signaling to solve at least one of the above problems.
- an encoding method of a correct/error response message is provided.
- the encoding method of the correct/error response message includes: when the number of bits of the correct/error response message of the feedback is greater than M, the encoding of the correct/error response message is encoded by the encoding method of the convolutional code, wherein M is a positive integer greater than 2.
- the encoding of the correct/error response message by using the encoding method of the convolutional code includes: encoding the correct/error response message by using the encoding method of the tailing convolutional code; After the correct/error response message is encoded, the method further includes: repeating the bit information of the encoded correct/error response message, and extracting the repeated bits according to the target length of the feedback information from the start position of the repeated bit information. information.
- M comprises one of the following: 11, 12, 13.
- an encoding method of rank indication signaling is provided.
- the coding method of the rank indication signaling according to the present invention includes: when the number of bits of the feedback rank indication signaling is greater than 2, the rank indication signaling is encoded by the coding manner of the linear block code.
- encoding the rank indication signaling by using the coding method of the linear block code includes: when the number of bits is greater than 2 and less than or equal to N, the linear block code is used
- the coding mode encodes the rank indication signaling; when the number of bits is greater than N, the rank indication signaling is encoded by the coding manner of the convolutional code, where N is a positive integer greater than 2.
- the method further includes: repeating the bit information of the encoded rank indication information, from the start position of the repeated bit information, The bit information after the repetition is intercepted according to the target length of the feedback information.
- the coding of the rank indication signaling by using the coding mode of the convolutional code includes: performing coding of the rank indication signaling by using a coding method of the tailing convolutional code After encoding the rank indication signaling by using the encoding method of the tailing convolutional code, the method further includes: repeating the bit information of the encoded rank indication information, starting from the repeated bit information Position, according to the target length of feedback information, the weight taken The bit information after the repetition.
- N comprises one of the following: 11, 12, 13.
- the encoding device of the correct/error response message includes: a first encoding module: when the number of bits of the correct/error response message fed back is greater than M, the encoding method of the convolutional code is correct/error The response message is encoded, where M is a positive integer greater than two.
- an apparatus for encoding rank indication signaling is provided.
- the encoding apparatus of the rank indication signaling according to the present invention includes: a second encoding module: configured to encode the rank indication signaling by using a coding manner of the linear block code when the number of bits of the rank indication signaling of the feedback is greater than 2.
- the correct/error response message is encoded by the encoding method of the convolutional code, where M is a positive integer greater than 2;
- M is a positive integer greater than 2;
- the coding method of the linear block code is used to encode the rank indication signaling, which solves the problem that the prior art does not support that when the ACK/NACK response message requiring feedback is greater than 11 bits, the RI
- the problem that the signaling is greater than 2 bits in the PUSCH transmission achieves the effect of ensuring reliable transmission of the correct/error response message and the rank indication signaling in the PUSCH.
- FIG. 1 is a schematic diagram of transmission of a correct/error response message and rank indication signaling on a PUSCH in an LTE system according to the related art
- FIG. 2 is a constraint length of 7 and a code rate of 1/1 according to an embodiment of the present invention
- 3 is a schematic diagram of a tail biting convolutional code
- FIG. 3 is a block diagram showing the structure of an encoding apparatus for a correct/error response message according to an embodiment of the present invention
- FIG. 4 is a structural block diagram of an apparatus for encoding rank indication signaling according to an embodiment of the present invention.
- the embodiment of the present invention provides a correct/false response message and rank, in which the RI signaling is greater than 2 bits in the PUSCH transmission problem when the ACK/NACK response message requiring feedback is greater than 11 bits.
- the coding method and device for indicating signaling solve the problem that the RI signaling is greater than 2 bits in the PUSCH transmission when the ACK/NACK response message requiring feedback is greater than 11 bits, and the correct/error response is guaranteed.
- an encoding method of a correct/error response message comprising: when the number of bits of the correct/error response message fed back is greater than M, the encoding method of the convolutional code is used The correct/error response message is encoded, where M is a positive integer greater than two.
- the encoding of the correct/error response message by using the encoding method of the convolutional code includes: encoding the correct/error response message by using the encoding method of the tailing convolutional code; After the correct/error response message is encoded, the method further includes: repeating the bit information of the encoded correct/error response message, and extracting the repeated bits according to the target length of the feedback information from the start position of the repeated bit information. information. Among them, M prefers 11, 12 or 13. According to an embodiment of the present invention, an encoding method of rank indication signaling is provided, where the method includes: when the number of bits of the feedback rank indication signaling is greater than 2, the coding manner of the linear block code is used to rank indication signaling Encode.
- the coding method of the linear block code when the number of bits of the feedback is greater than 2 and less than or equal to N, the coding method of the linear block code is used to encode the rank indication signaling; when the number of bits is greater than N, the coding method of the convolutional code is used to indicate the rank.
- the signaling is encoded, where N is a positive integer greater than two.
- the method further includes: repeating the bit information of the encoded rank indication information, and intercepting the repeated bit information according to the target length of the feedback information from the start position of the repeated bit information.
- the encoding of the rank indication signaling by using the coding mode of the convolutional code includes: encoding the rank indication signaling by using the encoding method of the tailing convolutional code; After the indication signaling is encoded, the method further includes: repeating the bit information of the encoded rank indication information, and intercepting the repeated bit information according to the target length of the feedback information from the start position of the repeated bit information.
- the tail-biting convolutional code can use the tail-biting convolutional code with a constraint length of 7 and a code rate of 1/3 as shown in Fig. 2.
- ⁇ prefers 11 or 12 or 13; Implementation process described in detail embodiments of the present invention.
- Example 1 in the TDD system, after carrier aggregation, the number of ACK/NACK response messages that need to be fed back is 12, respectively o ⁇ encode the bite-tailed convolutional code with a constraint length of 7 and a code rate of 1/3 as shown in Figure 2, repeat the encoded information, and then encode the target length ⁇ according to the transmitted feedback information.
- the starting position intercepts the corresponding length of the encoded letter T ⁇ ACK facilitate ACK resort ACK
- Example 2 the number of ACK/NACK response messages that need to be fed back is 12, respectively, 0 ⁇ ⁇ ... 0 ; ⁇ ], then the cyclic redundancy of length 8 is used first.
- the code is cyclically redundant and added, and then encoded with a bite-tailed convolutional code with a constraint length of 7, and a code rate of 1/3 as shown in Figure 2, the encoded information is repeated, and then based on the feedback of the transmission.
- the target length is Q ACK , and the encoded information of the corresponding length is intercepted from the starting position.
- the target length after encoding the feedback information is Q M ;
- the linear packet code is a Reed-Muller code, and the basic sequence is as shown in Table 5 or As shown in Table 6, the basic sequence can also be replaced by the basic sequence shown in Table 5 or Table 6, as shown in Table 7 and Table 8.
- the Reed-Muller code uses the basic sequence shown in Table 5.
- the RI information that needs to be fed back is 3 bits, that is, [o ], because the number of bits that need to be fed back is greater than 2 bits, and linear grouping is used.
- the code is encoded, the encoded bit information is repeated, and the target length is encoded according to the transmitted feedback information, and the sequence of the encoded information of the corresponding length is intercepted from the starting position. m.
- the total number of bits of the RI that needs feedback is 9, expressed as ⁇ ,..., ] because of the need for feedback.
- M 13; Suppose there are 5 component carriers to be aggregated, and the number of bits of the RI that need to be fed back for each carrier is 3 bits, then the total number of bits of the RI that needs feedback is 15, which is represented by [o, because the RI of the feedback is needed.
- the code is checked, and then the tail-biting convolutional code with the constraint length of 7, the code rate of 1/3 is encoded, and then the encoded information is repeated, and finally the target length is encoded according to the transmitted feedback information.
- Encoding device. 3 is a structural block diagram of an apparatus for encoding a correct/error response message according to an embodiment of the present invention. As shown in FIG. 3, the apparatus includes: a first encoding module 32, configured to: when the number of bits of the correct/error response message fed back is greater than In the case of M, the correct/error response message is encoded by the convolutional code encoding method, where M is a positive integer greater than 2.
- FIG. 4 is a structural block diagram of an apparatus for encoding rank indication signaling according to an embodiment of the present invention.
- the apparatus includes: a second encoding module 42, configured to: when the number of bits of the feedback rank indication signaling is greater than 2 And encoding the rank indication signaling by using a coding method of the linear block code.
- the coding apparatus of the correct/error response message and the coding apparatus of the rank indication signaling described in the device embodiment correspond to the foregoing method embodiments, and the specific implementation process has been described in detail in the method embodiment. , no longer praise here.
- the ACK/NACK response message of the LTE-A system TDD which is greater than 11 bits under carrier aggregation, and the rank indication signal of more than 2 bits in the LTE-A system can be effectively solved by the embodiment of the present invention.
- the coding problem when transmitting on the PUSCH ensures reliable transmission of the ACK/NACK message and the rank indication signaling on the PUSCH.
- the invention is not limited to any specific combination of hardware and software.
- the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.
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Abstract
本发明公开了一种正确/错误应答消息和秩指示信令的编码方法及装置,其中,正确/错误应答消息的编码方法包括:当反馈的正确/错误应答消息的比特数大于M时,采用卷积码的编码方式对正确/错误应答消息进行编码,其中,M为大于2的正整数。通过本发明,解决了现有技术不支持当需要反馈的ACK/NACK应答消息大于11比特时,RI信令大于2比特在PUSCH传输的问题,进而保证正确/错误应答消息和秩指示信令在PUSCH可靠传输。
Description
正确 吴应答消息和秩指示信令的编码方法及装置 技术领域 本发明涉及通信领域, 具体而言, 涉及一种正确 /错误应答消息和秩指示 信令的编码方法及装置。 背景技术 数字通信系统的飞速发展对数据通信的可靠性提出了更高的要求,然而, 在恶劣的信道下, 尤其是高数据速率或高速移动环境中, 多径千扰及多普勒 频移等严重地影响着系统性能。 因此, 有效的差错控制技术, 尤其是混合自 动请求重传 ( Hybrid Automatic Repeat Request, 简称为 HARQ )技术就成为 通信领域致力研究的热点。 在 HARQ方式中, 发端发送的码不仅能够检错, 而且还具有一定的纠错能力。接收端译码器收到码字后, 首先检验错误情况, 如果在码的纠错能力以内, 则自动进行纠错; 如果错误很多, 超过了码的纠 错能力,但能检测错误出来, 则接收端通过反馈信道给发端发一个判决信号, 要求发端重发信息。 在 OFDM 系统中, 通过正确应答消息 /错误应答消息 ( Acknowledgement/Negative Acknowledgement , 简称为 ACK/NACK )控制 信令来表示传输正确或错误, 并以此判断是否需要重传。 在长期演进系统( Long Term Evolution, 简称为 LTE )的下行 HARQ中, 物理下行共享信道 ( Physical Downlink Shared Channel, 简称为 PDSCH ) 的 ACK/NACK 应答消息, 当 PDSCH 只包含一个传输块时, 终端 (User Equipment, 简称为 UE )要反馈 1比特的 ACK/NACK应答消息, 当 PDSCH 包含两个传输块时, UE要反馈 2比特的 ACK/NACK应答消息。 在 LTE系统中, 预编码技术的实现是在通过 UE和基站 ( eNodeB 简称 为 eNB )设置码本(预编码矩阵的集合 ), UE根据一定的准则从码本中选择 最佳的预编码矩阵, 并^ 1预编码矩阵索引 ( Precoding Matrix Index, 简称为 PMI )反馈给 eNB , eNB才艮据接收的 PMI在码本中寻找对应的预编码矩阵, 在下行发射中应用此预编码矩阵进行预编码传输, 并且, 还需要在上行信道 中反馈秩指示(Rank Indicator, 简称为 RI )信令, 该信令表示下行传输的层 数。
LTE 系统中, ACK/NACK 应答消息是在物理上行控制信道 ( Physical Uplink Control Channel , 简称为 PUCCH ) 以格式 1/1 a/ lb上传输, 为了保持 上行的单载波性, 当 UE需要发送数据时, ACK/NACK应答消息是在物理上 行共享信道 (Physical Uplink Shared Channel , 简称为 PUSCH ) 中传输; RI 信令在 PUCCH上传输, 如果 UE需要发送数据时, 则 RI信令也在 PUSCH 中传输, 或者非周期的 CQI/PMI/RI上报时, RI信令也会在 PUSCH上传输, 如图 1所示, 图 1是根据相关技术的 LTE系统中正确 /错误应答消息和秩指 示信令在 PUSCH上传输示意图。 当 ACK/NACK应答消息和 RI信令需要在物理上行共享信道上发送时, 釆用的编码方式 ¾口下:
( 1 ) 当 ACK/NACK应答消息或 RI信令为 1 比特时, 也就是 [O。] , 对 于 ACK/NACK应答消息的含义为: ACK应答消息对应于 ' Γ , NACK应答 消息对应于 '0' , 对于 RI信令的含义如表 1 所示, 釆用的编码方式如表 2 (不同调制符号下 1比特 ACK/NACK应答消息或 RI信令的编码方式)所示: 表 1 和 RI的对应关系表
表 2编码后的 HARQ-ACK或 RI的示意表
其中 Q™是调制方式, χ, y是占位符, 将上述编码的后的比特信息重复, 才艮据传输的反馈信息编码后目标长度 ^ , Qm , 截取相应长度的编码后信 息; ( 2 ) 当 ACK/NACK应答消息或 RI信令为 2比特时, 也就是 [O。O, ] ,
对于 ACK/NACK应答消息的含义为: <XCK对应于码字 0的 ACK/NACK反 馈, O ^对应于码字 1的反馈; 对于 RI信令的含义如表 3所示, 釆用的编 码方式如表 4 (不同调制符号下 2比特 ACK/NACK应答消息或 RI信令的编 码方式) 所示: 表 3 [of o ]和 RI的对应关系的示意表
表 4编码后的 HARQ-ACK或 RI的示意表
其中 是调制方式, χ, y是占位符, 其中 O2 = (0, + O。)mod 2 , 将上述 编码的后的比特信息重复, 根据传输的反馈信息编码后目标长度 QACK , Qm , 截取相应长度的编码后信息。
LTE系统中, 下行传输最多支持 4层, 所以使用 2比特 RI信令的反馈, 但是对于 ACK/NACK应答消息, 在 TDD系统中, 由于上下行子帧的比例关 系是可配置的, 因此, 当出现下行子帧数大于上行子帧数时, 就有一个上行 子帧需要反馈多个下行子帧相应的 PDSCH的 ACK/NACK应答消息的情况, 所以 LTE系统中规定了当 ACK/NACK应答消息大于 2比特时的编码方式: 当 ACK/NACK应答消息大于 2 比特时, 也就是
编 码后的比特序 为
, 是通过以下方式获得的:
qfK ·Μ 32)„) ιη0(12 , 其中 i=0, l,2_ ,QACK-1
为了满足高级国际电信联盟的要求,作为 LTE的演进标准的高级长期演 进 ( Long Term Evolution Advanced, 简称为 LTE-A ) 系统需要支持更大的系 统带宽 (最高可达 100MHz ), 并需要后向兼容 LTE现有的标准。 在现有的 LTE系统的基础上, 可以将 LTE系统的带宽进行合并来获得更大的带宽, 这 种技术称为载波聚合 ( Carrier Aggregation, 简称为 CA ) 技术, 该技术能够 提高 IMT- Advance系统的频谱利用率、 緩解频谱资源紧缺, 进而优化频谱资 源的利用。 LTE-A系统中, 为了支持下行的传输容量, 支持 8层的传输方式。 在釆用了频谱聚合技术后的 LTE-A系统中,上行带宽和下行带宽就可以 包括多个分量载波。 当基站在多个下行分量载波上都有调度给某 UE 的 PDSCH时, 且当 UE在当前子帧有 PUSCH要发送时, 终端需要在 PUSCH 上反馈这多个下行分量载波的 PDSCH传输的 ACK/NACK应答消息。根据载 波聚合的场景, 在 TDD 系统下, 如果沿用现有技术中的上下行子帧配置, 那么最多需要反馈 ACK/NACK应答消息个数是 40个,如果对各个载波对应 的码字进行绑定操作, 那么也需要反馈 ACK/NACK应答消息个数是 20个; 对于 RI信令来说, 由于下行支持 8层传输, 以及载波聚合技术的引入, 使 得反馈的 RI信令大于 2比特。 相关技术中, 在 PUSCH上最多支持 11比特的 ACK/NACK应答消息的 传输或者 2比特的 RI信令的传输, 当需要反馈的 ACK/NACK应答消息大于 11比特时, RI信令大于 2比特时, 其在 PUSCH上的传输存在问题, 目前尚 未提出有效的解决方案。 发明内容 针对相关技术中不支持当需要反馈的 ACK/NACK应答消息大于 11比特 时, RI信令大于 2比特在 PUSCH传输的问题而提出本发明, 为此, 本发明 的主要目的在于提供一种正确 /错误应答消息和秩指示信令的编码方法及装 置, 以解决上述问题至少之一。 为了实现上述目的, 根据本发明的一个方面, 提供了一种正确 /错误应答 消息的编码方法。
才艮据本发明的正确 /错误应答消息的编码方法包括: 当反馈的正确 /错误 应答消息的比特数大于 M 时, 釆用卷积码的编码方式对正确 /错误应答消息 进行编码, 其中, M为大于 2的正整数。 具体地, 釆用卷积码的编码方式对正确 /错误应答消息进行编码包括: 釆 用咬尾卷积码的编码方式对正确 /错误应答消息进行编码;在釆用卷积码的编 码方式对正确 /错误应答消息进行编码之后, 还包括: 夺编码后的正确 /错误 应答消息的比特信息进行重复, 从重复后的比特信息的起始位置, 按照反馈 信息的目标长度, 截取重复后的比特信息。 优选地, M包括以下之一: 11、 12、 13。 为了实现上述目的, 根据本发明的另一个方面, 提供了一种秩指示信令 的编码方法。 根据本发明的秩指示信令的编码方法包括: 当反馈的秩指示信令的比特 数大于 2时, 釆用线性分组码的编码方式对秩指示信令进行编码。 优选地, 当反馈的秩指示信令的比特数大于 2时, 釆用线性分组码的编 码方式对秩指示信令进行编码包括: 当比特数大于 2 , 小于等于 N时, 釆用 线性分组码的编码方式对秩指示信令进行编码; 当比特数大于 N时, 釆用卷 积码的编码方式对秩指示信令进行编码, 其中, N为大于 2的正整数。 优选地, 釆用线性分组码的编码方式对秩指示信令进行编码包括: 通过 以下公式使用基本序列的长度对秩指示信令进行编码: ^^ ^ . M mcK , 其中, i=0、 1、 2、 . . .、 B- l , ,表示编码后的比特, Β表示基 本序列的长度, Μ,.„表示基本序列 η中编号为 i的值, ο。、 ολ οσ— ,表示 秩指示信令; 在釆用线性分组码的编码方式对秩指示信令进行编码之后, 还 包括: 将编码后的秩指示信息的比特信息进行重复, 从重复后的比特信息的 起始位置, 按照反馈信息的目标长度, 截取重复后的比特信息。 优选地, 釆用卷积码的编码方式对秩指示信令进行编码包括: 釆用咬尾 卷积码的编码方式对秩指示信令进行编码; 在釆用咬尾卷积码的编码方式对 秩指示信令进行编码之后, 还包括: 将编码后的秩指示信息的比特信息进行 重复, 从重复后的比特信息的起始位置, 按照反馈信息的目标长度, 截取重
复后的比特信息。 优选地, N包括以下之一: 11、 12、 13。 为了实现上述目的, 根据本发明的又一方面, 提供了一种正确 /错误应答 消息的编码装置。 才艮据本发明的正确 /错误应答消息的编码装置包括: 第一编码模块: 用于 当反馈的正确 /错误应答消息的比特数大于 M 时, 釆用卷积码的编码方式对 正确 /错误应答消息进行编码, 其中, M为大于 2的正整数。 为了实现上述目的, 根据本发明的再一方面, 提供了一种秩指示信令的 编码装置。 根据本发明的秩指示信令的编码装置包括: 第二编码模块: 用于当反馈 的秩指示信令的比特数大于 2时, 釆用线性分组码的编码方式对秩指示信令 进行编码。 通过本发明, 釆用当反馈的正确 /错误应答消息的比特数大于 M 时, 釆 用卷积码的编码方式对正确 /错误应答消息进行编码, 其中, M为大于 2的正 整数; 当反馈的秩指示信令的比特数大于 2时, 釆用线性分组码的编码方式 对秩指示信令进行编码, 解决了现有技术不支持当需要反馈的 ACK/NACK 应答消息大于 11比特时, RI信令大于 2比特在 PUSCH传输的问题, 进而达 到了保证正确 /错误应答消息和秩指示信令在 PUSCH可靠传输的效果。 附图说明 此处所说明的附图用来提供对本发明的进一步理解, 构成本申请的一部 分, 本发明的示意性实施例及其说明用于解释本发明, 并不构成对本发明的 不当限定。 在附图中: 图 1是根据相关技术的 LTE 系统中正确 /错误应答消息和秩指示信令在 PUSCH上传输示意图; 图 2是根据本发明实施例的约束长度为 7, 码率为 1/3 的咬尾卷积码的 示意图; 图 3是 居本发明实施例的正确 /错误应答消息的编码装置结构框图;
图 4是根据本发明实施例的秩指示信令的编码装置结构框图。 具体实施方式 考虑到现有技术不支持当需要反馈的 ACK/NACK应答消息大于 11比特 时, RI信令大于 2比特在 PUSCH传输问题, 本发明实施例提供了一种正确 / 错误应答消息和秩指示信令的编码方法及装置, 解决了现有技术不支持当需 要反馈的 ACK/NACK应答消息大于 11比特时, RI信令大于 2比特在 PUSCH 传输的问题, 进而达到了保证正确 /错误应答消息和秩指示信令在 PUSCH可 靠传输的效果。 需要说明的是, 在不冲突的情况下, 本申请中的实施例及实施例中的特 征可以相互组合。 下面将参考附图并结合实施例来详细说明本发明。 才艮据本发明的实施例, 提供了一种正确 /错误应答消息的编码方法, 该方 法包括: 当反馈的正确 /错误应答消息的比特数大于 M 时, 釆用卷积码的编 码方式对正确 /错误应答消息进行编码, 其中, M为大于 2的正整数。 具体地, 釆用卷积码的编码方式对正确 /错误应答消息进行编码包括: 釆 用咬尾卷积码的编码方式对正确 /错误应答消息进行编码;在釆用卷积码的编 码方式对正确 /错误应答消息进行编码之后, 还包括: 夺编码后的正确 /错误 应答消息的比特信息进行重复, 从重复后的比特信息的起始位置, 按照反馈 信息的目标长度, 截取重复后的比特信息。 其中, M优先选择 11、 12或 13。 根据本发明的实施例,提供了一种秩指示信令的编码方法,该方法包括: 当反馈的秩指示信令的比特数大于 2时, 釆用线性分组码的编码方式对秩指 示信令进行编码。 具体地, 当反馈的比特数大于 2, 小于等于 N时, 釆用线性分组码的编 码方式对秩指示信令进行编码; 当比特数大于 N时, 釆用卷积码的编码方式 对秩指示信令进行编码, 其中, N为大于 2的正整数。 具体地, 釆用线性分组码的编码方式对秩指示信令进行编码包括, 通过 以下公式使用基本序列 的长度对多 个秩指示信令进行编码: ¾,. = ; (0„ . ,„) mod 2 ' 其中, i=0、 1、 2 B-1 , 表示编码后
的比特, B表示基本序列的长度, M,.„表示基本序列 n中编号为 i的值, o。、 ολ 0。—,表示秩指示信令; 在釆用线性分组码的编码方式对秩指示信令 进行编码之后, 还包括: 将上述编码后的秩指示信息的比特信息进行重复, 从重复后的比特信息的起始位置, 按照反馈信息的目标长度, 截取重复后的 比特信息。 其中, 釆用卷积码的编码方式对秩指示信令进行编码包括: 釆用咬尾卷 积码的编码方式对秩指示信令进行编码; 在釆用咬尾卷积码的编码方式对秩 指示信令进行编码之后, 还包括: 将编码后的秩指示信息的比特信息进行重 复, 从重复后的比特信息的起始位置, 按照反馈信息的目标长度, 截取重复 后的比特信息。 其中, 咬尾卷积码可以使用图 2所示的约束长度为 7 , 码率为 1/3 的咬 尾卷积码。 其中, Ν优先选择 11或 12或 13 ; 下面将结合实例对本发明实施例的实现过程进行详细描述。 实施例 1 在本实施例中, 对于 ACK/NACK应答消息, 传输反馈信息编码后的目 标长度为 acjc , 循环冗余校验对应的多项式为 gCRC8(D) = [D8 + D7 + D4 + D3 + D + 1] : 实例 1 在本实施例中, 在 TDD系统中, 载波聚合后, 需要反馈的 ACK/NACK 应答消息个数为 12个, 分别为
o 釆用图 2所示的约束长度 为 7 , 码率为 1/3 的咬尾卷积码进行编码, 将编码后的信息重复, 然后才艮据 传输的反馈信息编码后目标长度 ^ , 从起始位置截取相应长度的编码后信 T ^ACK „ACK „ACK „ACK 实例 2
在本实例中, 在 TDD系统中, 载波聚合后, 需要反馈的 ACK/NACK应 答消息个数为 12, 分别为 0ι ^… 0;^] , 那么先釆用长度为 8的循环冗余
码进行循环冗余校 -险添加, 然后釆用图 2 所示的约束长度为 7, 码率为 1/3 的咬尾卷积码进行编码, 将编码后的信息重复, 然后根据传输的反馈信息编 码后 目 标长度 QACK , 从起始位置截取相应长度的编码后信息
ACK ACK ACK ACK 实施例 2 在本实施例中, 对于 RI信令, 传输反馈信息编码后的目标长度为 QM; £设线性分组码釆用 Reed-Muller码, 基本序列如表 5所示或者表 6所示, 基本序列也可以釆用表 5或者表 6所示的基本序列进行行置换后的形式, 如 表 7和表 8所示, 当然不排除其它行置换后的形式, 那么对应的 M值分别为 M=13和 M=l 1 , £设循环冗余校-险对应的多项式为 gCRC8(D) = [D8 + D7 + D4 + D3 + D + 1]。
表 5 (32, O )码的基本序列一的示意表
实例 1
LTE-A系统中, Reed-Muller编码釆用表 5所示的基本序列, 需要反馈的 RI信息是 3比特, 也就是说 [o ] , 因为需要反馈的比特数大于 2比特, 釆用线性分组码进行编码, 将编码后的比特信息重复, 根据传输的反馈信息 编码后目标长度 , 从起始位置截取相应长度的编码后信息的序列为
m 。 实例 2 在本实例中, 载波聚合下, Reed-Muller 釆用表 6 所示的基本序列, 则 M=ll; 有 3个分量载波聚合, 每个载波需要反馈的 RI的比特数为 3比特, 则需要反馈的 RI 的总的比特数为 9, 以 ί ,..., ]表示, 因为需要反馈的
RI的比特数为 9, 大于 2比特, 小于 Μ ( M=ll ), 因此釆用线性分组码进行 编码, 然后将编码后的信息重复, 最后根据传输的反馈信息编码后目标长度
Qm , 从起始位置截取相应长度的编码后信息的序列为 q q^K 。 实例 3 在本实例中, 载波聚合下, Reed-Muller 釆用表 5 所示的基本序列, 则
M=13; 假设有 5个分量载波聚合, 每个载波需要反馈的 RI的比特数为 3比 特, 则需要反馈的 RI 的总的比特数为 15 , 以 [o 表示, 因为需要 反馈的 RI的比特数为 15 , 大于 M ( M=13 ), 所以釆用图 2所示约束长度为 7, 码率为 1/3的咬尾卷积码进行编码, 然后将编码后的信息重复, 最后根据 传输的反馈信息编码后目标长度 ,从起始位置截取相应长度的编码后信息 的序列为 ― i。 实例 4 在本实例中, 载波聚合下, Reed-Muller 釆用表 7 所示的基本序列, 则 M=13; 有 5个分量载波聚合, 每个载波需要反馈的 RI的比特数为 3比特, 则需要反馈的 RI的总的比特数为 15 , 以 [o 表示, 因为需要反馈 的 RI的总的比特数为 15 , 大于 M ( M=13 ), 所以先釆用长度为 8的循环冗 余码进行校验, 然后釆用图 2所示约束长度为 7, 码率为 1/3 的咬尾卷积码 进行编码, 然后将编码后的信息重复, 最后根据传输的反馈信息编码后目标 长度 ft„ ,从起始位置截取相应长度的编码后信息的序列为 g ,^7,^7, ..., ^^; 才艮据本发明的实施例, 提供了一种正确 /错误应答消息的编码装置。
图 3是 居本发明实施例的正确 /错误应答消息的编码装置结构框图,如 图 3 所示, 该装置包括: 第一编码模块 32 , 用于当反馈的正确 /错误应答消 息的比特数大于 M 时, 釆用卷积码的编码方式对正确 /错误应答消息进行编 码, 其中, M为大于 2的正整数。 根据本发明的实施例, 提供了一种秩指示信令的编码装置。 图 4是根据本发明实施例的秩指示信令的编码装置结构框图, 如图 4所 示, 该装置包括: 第二编码模块 42 , 用于当反馈的秩指示信令的比特数大于 2时, 釆用线性分组码的编码方式对秩指示信令进行编码。 需要说明的是,装置实施例中描述的正确 /错误应答消息的编码装置和秩 指示信令的编码装置对应于上述的方法实施例, 其具体的实现过程在方法实 施例中已经进行过详细说明, 在此不再赞述。 综上所述, 通过本发明实施例, 可以有效地解决 LTE-A系统 TDD中, 载波聚合下, 大于 11 比特的 ACK/NACK应答消息, 以及 LTE-A系统中, 大于 2 比特的秩指示信令在 PUSCH 上传输时的编码问题, 确保了 ACK/NACK消息和秩指示信令在 PUSCH的可靠传输。 显然, 本领域的技术人员应该明白, 上述的本发明的各模块或各步骤可 以用通用的计算装置来实现, 它们可以集中在单个的计算装置上, 或者分布 在多个计算装置所组成的网络上, 可选地, 它们可以用计算装置可执行的程 序代码来实现, 从而, 可以将它们存储在存储装置中由计算装置来执行, 或 者将它们分别制作成各个集成电路模块, 或者将它们中的多个模块或步骤制 作成单个集成电路模块来实现。 这样, 本发明不限制于任何特定的硬件和软 件结合。 以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本 领域的技术人员来说, 本发明可以有各种更改和变化。 凡在本发明的 ^"神和 原则之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发明的保护 范围之内。
Claims
1. 一种正确 /错误应答消息的编码方法, 其特征在于, 包括:
当反馈的正确 /错误应答消息的比特数大于 M 时, 釆用卷积码的编 码方式对所述正确 /错误应答消息进行编码,其中, M为大于 2的正整数。
2. 根据权利要求 1所述的方法, 其特征在于,
釆用所述卷积码的编码方式对所述正确 /错误应答消息进行编码包 括: 釆用咬尾卷积码的编码方式对所述正确 /错误应答消息进行编码; 在釆用所述卷积码的编码方式对所述正确 /错误应答消息进行编码 之后,还包括:将编码后的所述正确 /错误应答消息的比特信息进行重复; 从重复后的所述比特信息的起始位置, 按照反馈信息的目标长度, 截取 重复后的所述比特信息。
3. 根据权利要求 1所述的方法, 其特征在于, 所述 M包括以下之一: 11、 12、 13。
4. 一种秩指示信令的编码方法, 其特征在于, 包括:
当反馈的秩指示信令的比特数大于 2时, 釆用线性分组码的编码方 式对所述秩指示信令进行编码。
5. 根据权利要求 4所述的方法, 其特征在于, 当反馈的秩指示信令的比特 数大于 2时, 釆用所述线性分组码的编码方式对所述秩指示信令进行编 码包括:
当所述比特数大于 2, 小于等于 N时, 釆用线性分组码的编码方式 对所述秩指示信令进行编码;
当所述比特数大于 N时, 釆用卷积码的编码方式对所述秩指示信令 进行编码, 其中, N为大于 2的正整数。
6. 根据权利要求 4或 5所述的方法, 其特征在于,
釆用所述线性分组码的编码方式对所述秩指示信令进行编码包括: 通过以下公式使用基本序列的长度对所述秩指示信令进行编码: δ( = ^ (OK . . K )mod 2 , 其中, i=0、 1、 2 B- l , , 表示 编码后的比特, B表示基本序列的长度, M n表示基本序列 n中编号为 i 的值, ο。、 ολ 0。—,表示秩指示信令; 在釆用所述线性分组码的编码方式对所述秩指示信令进行编码之 后, 还包括:
将编码后的所述秩指示信息的比特信息进行重复; 从重复后的所述比特信息的起始位置, 按照反馈信息的目标长度, 截取重复后的所述比特信息。
7. 根据权利要求 5所述的方法, 其特征在于,
釆用卷积码的编码方式对所述秩指示信令进行编码包括: 釆用咬尾卷积码的编码方式对所述秩指示信令进行编码; 在釆用所述咬尾卷积码的编码方式对所述秩指示信令进行编码之 后, 还包括:
将编码后的所述秩指示信息的比特信息进行重复;
从重复后的所述比特信息的起始位置, 按照反馈信息的目标长度, 截取重复后的所述比特信息。
8. 根据权利要求 5所述的方法, 其特征在于, 所述 Ν包括以下之一: 11、 12、 13。
9. 一种正确 /错误应答消息的编码装置, 其特征在于, 包括:
第一编码模块: 用于当反馈的正确 /错误应答消息的比特数大于 Μ 时, 釆用卷积码的编码方式对所述正确 /错误应答消息进行编码, 其中, Μ为大于 2的正整数。
10. —种秩指示信令的编码装置, 其特征在于, 包括:
第二编码模块: 用于当反馈的秩指示信令的比特数大于 2时, 釆用 线性分组码的编码方式对所述秩指示信令进行编码。
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