WO2011085582A1 - Multicarrier system and method for sending acknowledgement/ negative acknowledgement messages - Google Patents

Abstract

A multicarrier system with big bandwidth and a method for sending Acknowledgement/negative acknowledgement (ACK/NACK) messages in the multicarrier system are disclosed. In the multicarrier system including a base station and a terminal, the base station instructs the downlink allocation index in the physical downlink control channel; according to the received downlink allocation index, the actual detected number of the component carriers and the ACK/NACK messages corresponding to every code word stream of the downlink component carrier transferred in the physical downlink shared channel obtained by the physical downlink shared channel detecting, the terminal sends the ACK/NACK messages according to the bundling or multiplexing mode configured by the base station in the physical uplink shared channel or physical uplink control channel. When sending the negative acknowledgement messages, the reason causing the negative acknowledgement messages is send in bundling or multiplexing mode according to the configuration by the base station. The system and method can send ACK/NACK messages when the downlink configuration information maybe lost.

Description

 Multi-carrier system and method for transmitting correct/error response message

Technical field

 The present invention relates to the field of digital communications, and in particular to a multi-carrier system with a large bandwidth and a method for transmitting a correct/error response message in the multi-carrier system.

Background technique

 The rapid development of digital communication systems places higher demands on the reliability of data communication. However, in harsh channels, especially in high data rate or high-speed mobile environments, multipath interference and Doppler shift are severely Affects system performance. Therefore, effective error control techniques, especially Hybrid Automatic Repeat Request (HARQ) technology, have become a hot research topic in the field of communication.

 In the HARQ mode, 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. If the error is too much, the error correction capability of the code is exceeded, but the error can be detected. The receiving end sends a decision signal to the sending end through the feedback channel, and requests the originating end to resend the information. In the Orthogonal Frequency Division Multiplexing (OFDM) system, the correct or error message is transmitted by the ACK/NACK: Acknowledgement/Negative Acknowledgement control signaling, and the judgment is made. Whether you need to retransmit.

 In the downlink HARQ of the Long Term Evolution (LTE), the ACK/NACK response message of the Physical Downlink Shared Channel (PDSCH), when the terminal (UE: User Equipment) has no physical uplink in the current subframe. When the shared channel (PUSCH: Physical Uplink Shared Channel) is transmitted on the physical uplink control channel (PUCCH: Physical Uplink Control Channel), when the UE has a PDSCH to transmit in the current subframe, the ACK/NACK information is multiplexed. On the PUSCH, it is transmitted together with the data modulation using the same modulation and coding scheme.

When the PDSCH contains only one transport block, the terminal shall feed back a 1-bit ACK/NACK response. Message, when the PDSCH contains two transport blocks, the terminal shall feed back a 2-bit ACK/NACK response message.

 In the International Mobile Telecommunications-Advanced (IMT-Advanced) system, it can realize high-speed data transmission and has a large system capacity. In the case of low-speed mobile and hotspot coverage, the IMT-Advanced system The peak rate can reach 1Gbit/s. In the case of high-speed mobile and wide-area coverage, the peak rate of the IMT-Advanced system can reach 100Mbit/s.

 In order to meet the requirements of the International Telecommunication Union-Advanced (ITU-Advanced), the Long Term Evolution Advanced (LTE-A) system, which is the evolution standard of LTE, needs to support larger systems. Bandwidth (up to 100MHz) and requires backward compatibility with existing LTE standards. 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. The spectrum utilization, mitigation of spectrum resources shortage, and optimize the utilization of spectrum resources.

 After the introduction of carrier aggregation, in the current discussion about the relationship between the downlink component carrier and the PDSCH transport block and the HARQ process, a basic working assumption is that when no space division multiplexing is used, one downlink component carrier corresponds to one PDSCH transport block and one HARQ process. That is, the UE needs to feed back 1-bit ACK/NACK response information for one PDSCH transport block of each component carrier.

 In addition, a current working assumption of LTE-A is that for a PDSCH transmission of non-semi-persistent scheduling (SPS) on each downlink component carrier, it has a corresponding PDCCH to carry its corresponding downlink configuration information. And the PDCCH carrying the downlink configuration information and the PDSCH may be on the same component carrier (when there is no carrier indicator (CI) in the DCI), or on different component carriers (when the CII is introduced in the DCI) Time) .

In the LTE-A system after spectrum aggregation technology, the uplink bandwidth and the downlink bandwidth may include multiple component carriers. When the base station schedules a PDSCH for a certain UE on multiple downlink component carriers, and when the UE does not transmit a PUSCH in the current subframe, the terminal needs to feed back the ACK of the PDSCH transmission of the multiple downlink component carriers on the PUCCH. The NACK acknowledges the message, and when the UE has a PUSCH to transmit on the current subframe, the terminal may reply to the ACK/NACK response message. Used on PUSCH, sent simultaneously with data. Therefore, for LTE-A, even in an FDD system, it is necessary to feed back the ACK/NACK response message of the PDSCH corresponding to multiple downlink component carriers in one uplink subframe, which is related to the frequency division duplex (FDD of LTE-8 LTE). The system is different.

 For the case of sending an ACK/NACK response message on the PUCCH, the following three methods can be used:

 (1) A direct method is to feed back multiple ACK/NACK response messages in the same manner as LTE on multiple PUCCH channels corresponding to multiple downlink component carriers. This method is relatively simple and can maintain compatibility with LTE. However, because multiple PUCCH channels are transmitted simultaneously on the uplink, the uplink single carrier characteristics are destroyed. When the UE power is limited, the ACK/NACK detection will be affected. Performance, or the performance of the uplink coverage is degraded.

 (2) Another method is the binding method, which is to perform feedback operation (bundling, that is, logical AND operation) on ACK/NACK response messages of multiple downlink carriers, and then feed back on a single PUCCH channel.

 (3) In addition, there is a method of channel selection based on time division duplex (TDD) system (also called multiplexing with channel selection, referred to as multiplexing). The core idea of the method is to use different PUCCH channels and different channels. Modulation symbols to indicate different feedback states for all carriers. Since the method feeds back only on one PUCCH channel, there is no problem of destroying the single carrier characteristic, and the problem of throughput reduction caused by the binding method is avoided, so the method is supported by a plurality of companies.

 The above three methods, the first one is called NxPUCCH, the second is called bundling, and the third is called multiplexing. Because of the latter two ACK/NACK feedback modes, the uplink single carrier is guaranteed, and thus, in the LTE-A system. Both of these methods can be used as a candidate for the feedback scheme when the ACK/NACK response message in the LTE-A system is transmitted on the PUCCH. However, the downlink configuration information (bearing on the corresponding PDCCH) of the PDSCH on some component carriers is lost, and the UE cannot correctly detect the loss of the downlink configuration information due to the lack of a corresponding mechanism, thereby causing the UE not to correctly feed back the ACK/NACK. Reply message.

Therefore, detecting the loss of downlink configuration information on the UE side or the base station side in the LTE-A system is an urgent problem to be solved in the design of the ACK/NACK feedback scheme. For the case of transmitting an ACK/NACK response message on the PUSCH, there is currently no corresponding solution. Summary of the invention

 The technical problem to be solved by the present invention is to provide a multi-carrier system with a large bandwidth and a method for transmitting a correct/error response message in the multi-carrier system, and to solve the problem that the downlink configuration information may be lost in the multi-carrier system. Next, how to implement the sending of an ACK/NACK response message.

 In order to solve the above problem, the present invention provides a method for transmitting a correct/error response message in a multi-carrier system, including:

 The base station indicates a downlink allocation index related to the physical downlink shared channel transmission on the physical downlink control channel related to the physical downlink transmission and/or indicates a downlink related to the physical downlink shared channel transmission on the physical downlink control channel related to the physical uplink transmission. Allocating an index, sending a physical downlink shared channel and a corresponding physical downlink control channel to the terminal;

The terminal detects the physical downlink control channel, and obtains the downlink allocation index of the subframe n according to the physical downlink control channel related to the physical downlink transmission, and obtains the downlink allocation index of the subframe n according to the physical downlink control channel related to the physical uplink transmission as ^; The number of component carriers that are actually detected by the physical downlink shared channel with the corresponding physical downlink control channel is U, and the number of component carriers transmitted by the physical downlink shared channel without the corresponding physical downlink control channel is N _sps ;

 The terminal performs physical downlink shared channel detection according to the detected downlink configuration information of the physical downlink control channel, and obtains a correct/error response message corresponding to each codeword stream of the physical downlink shared channel of the corresponding downlink component carrier;

 The terminal performs correct/error response on the physical uplink shared channel or the physical uplink control channel according to the combination of the i, v^, u, according to the binding or multiplexing manner of the base station configuration to the terminal in the subframe n+K. The sending of the message.

 The method further includes: when the terminal sends an error response message in the subframe n+K, the terminal indicates the cause of the error response message to the base station according to the binding or multiplexing manner configured by the base station to the terminal.

The step of indicating, by the base station, the downlink allocation index related to the physical downlink shared channel transmission on the physical downlink control channel related to the physical downlink transmission, includes: in a downlink control information format of the physical downlink control channel related to the physical downlink shared channel transmission Add a downlink allocation index DAI a field, used to indicate the number of downlink component carriers used for performing physical downlink shared channel transmission, which is allocated to the current downlink component carrier in the current subframe according to a certain carrier scheduling order;

 The step of indicating, by the base station, the downlink allocation index related to the physical downlink shared channel transmission on the physical downlink control channel related to the physical uplink transmission, includes: in a downlink control information format of the physical downlink control channel related to the physical uplink shared channel transmission A downlink allocation index DAI field is added to indicate the number of downlink component carriers allocated for the physical downlink shared channel transmission in the current subframe.

 The step of detecting, by the terminal, the physical downlink control channel, and obtaining the downlink allocation index of the subframe n according to the physical downlink control channel related to the physical downlink transmission, includes: the terminal performing physical downlink control channel detection according to a certain carrier sequence, and detecting the terminal The value of the DAI field in the downlink control information format associated with the physical uplink shared channel transmission;

 The step of detecting, by the terminal, the physical downlink control channel, and obtaining the downlink allocation index of the subframe n according to the physical downlink control channel related to the physical uplink transmission, includes: the terminal detecting that there is a physical downlink control channel related to the physical uplink shared channel transmission, Then, the value of the DAI field in the downlink control information format of the corresponding physical downlink control channel is set.

 The terminal performs correct/error response on the physical uplink shared channel or the physical uplink control channel according to the combination of the i and v^u according to the binding or multiplexing mode of the base station configuration to the terminal in the subframe n+K. The step of transmitting the message includes: if the terminal has a physical uplink shared channel PUSCH to be transmitted on the subframe n+K, then the correct/error response message is fed back on the physical uplink shared channel, otherwise, the feedback on the physical uplink control channel is correct/ Error response message. among them:

 The terminal uses the binding mode, and when the physical uplink shared channel feeds back the correct/error response message, the step of feeding back the correct/error response message on the physical uplink shared channel includes: first determining whether at least one downlink configuration information is lost, if any Then, all the codeword streams generate an error response signal; if not, the ί/^ + Λ^ independent physical downlink shared channel transmits the corresponding correct/error response message of each codeword stream, and the binding is performed. The correct/error response message is then shared in the physical uplink shared channel.

After the terminal binds the correct/error response message, if the error response signal is obtained, the step of the binding correct/error response message in the physical uplink shared channel feedback includes: determining the corresponding binding number, and using the binding The number selects scrambling for the error response message. The terminal uses the binding mode, and when the physical uplink control channel feeds back the correct/error response message, the step of feeding back the correct/error response message on the physical uplink control channel includes: first determining whether at least one downlink configuration information is lost, if any , the terminal does not send any correct/error response signal; otherwise, the U _{DA1 +} N _SPS independent physical downlink shared channel transmits the corresponding correct/error response message of each codeword stream, and the binding is correct/ The error response message is fed back on the physical uplink control channel. The terminal uses the format la or lb of the physical uplink control channel to send the bound correct/error response message.

 The terminal uses the multiplexing mode, and when the physical uplink shared channel feeds back the correct/error response message, the step of feeding back the correct/error response message on the physical uplink shared channel includes: first, according to the number of downlink component carriers in the downlink component carrier set Or the I determines the number of feedback bits of the correct/error response message, and then performs the binding operation between the codeword streams on the correct/error response message detected on each codeword stream, and then maps the binding value to the number of feedback bits. In the corresponding bit.

 The terminal uses the multiplexing mode, and when the physical uplink control channel feeds back the correct/error response message, the step of feeding back the correct/error response message on the physical uplink control channel includes: first, according to the number of downlink component carriers in the downlink component carrier set Determining the number of feedback bits of the correct/error response message, and performing a binding operation between the codeword streams on the correct/error response message detected on each codeword stream, and obtaining a number of bound correct/error response messages after the feedback bits Then select an available physical uplink control channel and use the format lb to send the bound correct/error response message.

 The value of the K is determined according to the timing relationship of the downlink hybrid automatic request retransmission HARQ. The physical downlink control channel associated with the physical uplink shared channel transmission transmits only one of the downlink component carrier sets.

The present invention also provides a multi-carrier system, including: a base station and a terminal, where:

 The base station is configured to: indicate a downlink allocation index related to physical downlink shared channel transmission on a physical downlink control channel related to physical downlink transmission, and/or indicate and physical downlink on a physical downlink control channel related to physical uplink transmission Sharing a downlink allocation index related to channel transmission, and sending a physical downlink shared channel and a corresponding physical downlink control channel to the terminal;

The terminal is set to: detect the physical downlink control channel, according to the physical related to the physical downlink transmission The downlink control channel acquires the downlink allocation index of the subframe n, and obtains the downlink allocation index of the subframe n according to the physical downlink control channel related to the physical uplink transmission as ^; the actually detected physical downlink shared channel with the corresponding physical downlink control channel The number of component carriers transmitted is u _DAI , and the number of component carriers transmitted by the physical downlink shared channel without the corresponding physical downlink control channel is N _SPS ;

 The terminal is further configured to: perform physical downlink shared channel detection according to the detected downlink configuration information of the physical downlink control channel, and obtain a correct/error response message corresponding to each codeword stream of the physical downlink shared channel of the corresponding downlink component carrier; The terminal is on the subframe n+K, according to the I, C,

The combination of U _DAI and the physical uplink shared channel or the physical uplink control channel performs the transmission of the correct/error response message according to the binding or multiplexing mode of the base station configuration to the terminal.

 The terminal is further configured to: when performing the error response message transmission on the subframe n+K, indicate the cause of the error response message to the base station according to the binding or multiplexing manner of the base station configuration to the terminal.

 The base station is configured to indicate a downlink allocation index related to physical downlink shared channel transmission on a physical downlink control channel related to physical downlink transmission in a manner of: downlink control of a physical downlink control channel related to physical downlink shared channel transmission Adding a downlink allocation index DAI field to the information format, which is used to indicate the number of downlink component carriers used for physical downlink shared channel transmission allocated to the current downlink component carrier in the current subframe according to a certain carrier scheduling order;

 The base station is configured to indicate a downlink allocation index related to physical downlink shared channel transmission on a physical downlink control channel related to physical uplink transmission in a manner of: downlink control of a physical downlink control channel related to physical uplink shared channel transmission A downlink allocation index DAI field is added to the information format, and is used to indicate the number of downlink component carriers allocated for the physical downlink shared channel transmission in the current subframe.

 The terminal is configured to detect the physical downlink control channel in the following manner, and obtain the downlink allocation index of the subframe n according to the physical downlink control channel related to the physical downlink transmission to be I: perform physical downlink control channel detection according to a certain carrier sequence, The value of the DAI field in the downlink control information format related to the physical uplink shared channel transmission detected by the terminal;

The terminal is configured to detect the physical downlink control channel in the following manner, and obtain a downlink allocation index of the subframe n according to the physical downlink control channel related to the physical uplink transmission: 3⁄4: detecting a physical downlink related to the physical uplink shared channel transmission Control channel, then let v be the corresponding physical downlink The value of the DAI field in the downlink control information format of the control channel.

 The terminal is configured to send a correct/error response message in the following manner: if the terminal has a physical uplink shared channel PUSCH to be transmitted on the subframe n+K, the correct/error response message is fed back on the physical uplink shared channel, otherwise, The correct/error response message is fed back on the physical uplink control channel. among them,

 The terminal is configured to use the binding mode in the following manner, and feedback the correct/error response message on the physical uplink shared channel: first, it is determined whether at least one downlink configuration information is lost, and if so, all the codeword streams generate an error response signal; Otherwise, the correct/error response message of each codeword stream corresponding to each of the independent physical downlink shared channels is bound, and the bound correct/error response message is fed back on the physical uplink shared channel. After the terminal binds the correct/error response message, it needs to send an error response signal to determine the corresponding binding number, and use the binding number to select the scrambling error message.

The terminal is configured to use the binding mode in the following manner, and feed back the correct/error response message on the physical uplink control channel: first, it is determined whether at least one downlink configuration information is lost, and if yes, the terminal does not send any correct/error response signal; Otherwise, the U _DM + N _sps independent physical downlink shared channel transmits the corresponding correct/error response message of each codeword stream, and the bound correct/error response message is fed back on the physical uplink control channel. The terminal uses the format la or lb of the physical uplink control channel to send the bound correct/error response message.

 The terminal is configured to use the multiplexing mode in the following manner to feed back the correct/error response message in the physical uplink shared channel: first, determine the feedback of the correct/error response message according to the number of downlink component carriers in the downlink component carrier set or the i After the number of bits, the correct/error response message detected on each codeword stream is subjected to a binding operation between the codeword streams, and the binding value is mapped to the corresponding bit in the feedback bit number.

The terminal is configured to use the multiplexing mode in the following manner, and feed back the correct/error response message on the physical uplink control channel: first, determine the number of feedback bits of the correct/error response message according to the number of downlink component carriers in the downlink component carrier set, After the correct/error response message detected on each codeword stream is subjected to the binding operation between the codeword streams, a number of bound correct/error response messages are obtained from the feedback bits; and then an available physical uplink control channel is selected, 釆The formatted _{lb is} used to send the bound correct/error response message.

The value of the K is determined according to the timing relationship of the downlink hybrid automatic request retransmission HARQ. The physical downlink control channel sent by the base station and related to the physical uplink shared channel transmission is only sent in the downlink component carrier set.

The multi-carrier system under the large bandwidth of the present invention, and the method for transmitting the correct/error response message in the multi-carrier system, can implement the sending of the ACK/NACK response message when the downlink configuration information may be lost in the multi-carrier system. . Further, if the NACK response message is fed back, the terminal may also indicate to the base station the reason why the NACK response occurs when transmitting. There are two ways to use the two channels for feedback, which has good applicability and flexibility. BRIEF abstract

 Figure 1 is a schematic diagram of ACK/NACK when transmitted in bundling mode;

 2 is a schematic diagram of ACK/NACK transmission in bundling mode, and when downlink configuration information is lost;

 FIG. 3 is a schematic diagram of the ACK/NACK multiplexing mode, when transmitted on the PUSCH;

 4 is a schematic diagram of the ACK/NACK multiplexing mode, which is transmitted on the PUSCH and the downlink transmission includes the SPS PDSCH;

 FIG. 5 is a schematic diagram of the ACK/NACK multiplexing mode, when the PUSCH is transmitted and the downlink configuration information is lost;

 6 is another schematic diagram of the ACK/NACK multiplexing mode, which is transmitted on the PUSCH, and the SPS PDSCH transmission is included in the downlink transmission, and the downlink configuration information is lost;

 7 is a schematic diagram of an ACK/NACK multiplexing mode, which is transmitted on a PUSCH (but the PUSCH does not have a corresponding PDCCH) or is transmitted on a PUCCH;

 Figure 8 shows the ACK/NACK multiplexing mode, which is sent on the PUSCH (but this

A schematic diagram when the PUSCH does not have a corresponding PDCCH or is transmitted on the PUCCH and the downlink transmission includes the SPS PDSCH;

Figure 9 is an ACK/NACK multiplexing mode, which is sent on the PUSCH (but this A schematic diagram when the PUSCH does not have a corresponding PDCCH or is sent on the PUCCH and the downlink configuration information is lost;

 10 is a schematic diagram of the ACK/NACK multiplexing mode, which is transmitted on the PUSCH (but the PUSCH does not have a corresponding PDCCH) or is transmitted on the PUCCH, the SPS PDSCH transmission is included in the downlink transmission, and the downlink configuration information is lost. ;

 11 is a schematic diagram of the ACK/NACK multiplexing mode, which is transmitted on the PUSCH and the number of downlink component carriers is 5. Preferred embodiment of the invention

 In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings.

 The present invention provides a multi-carrier system and a method for transmitting a correct/error response message in the multi-carrier system. The present invention is particularly applicable to the ACK/NACK response message transmission in the LTE-A system, and can ensure that the UE side can correctly feed back the ACK/NACK response message, and the base station side can correctly detect the UE receiving the PDSCH. The present invention is primarily directed to FDD systems.

In a system using a carrier aggregation technology (for example, an LTE-A system), it is assumed that a base station configures a Downlink Component Carrier Set S by using a high-level signaling, where S includes M downlink component carriers. That is s = { cc. , c , cc ₂ ,..., cc _M — j. Each time the base station performs downlink scheduling on the UE, the PDSCH transmission is performed by using one or more component carriers in the downlink component carrier set S. At the same time, it is assumed that the mode in which the base station configures the UE to feed back the ACK/NACK response message is bundling or multiplexing.

 A multi-carrier system of the present invention includes: a base station and a terminal, wherein:

 a base station, configured to indicate a downlink allocation index related to physical downlink shared channel transmission on a physical downlink control channel related to physical downlink transmission, and/or to indicate and physical downlink on a physical downlink control channel related to physical uplink transmission Sharing a downlink allocation index related to channel transmission, and sending a physical downlink shared channel and a corresponding physical downlink control channel to the terminal;

The terminal is configured to detect a physical downlink control channel, and obtain a downlink allocation index of the subframe n according to the physical downlink control channel related to the physical downlink transmission, according to the physical uplink transmission related object The downlink downlink control channel acquires the downlink allocation index of the subframe n as ^; the actually detected number of component carriers of the physical downlink shared channel transmission with the corresponding physical downlink control channel is u _DM , and the physical downlink shared channel without the corresponding physical downlink control channel The number of component carriers transmitted is N _SPS ;

 The terminal is further configured to perform physical downlink shared channel detection according to the downlink configuration information of the detected physical downlink control channel, and obtain a correct/error response message corresponding to each codeword stream of the physical downlink shared channel of the corresponding downlink component carrier; The terminal is on the subframe n+K, according to the i, v,

The combination of U _DAI and the physical uplink shared channel or the physical uplink control channel performs the transmission of the correct/error response message according to the binding or multiplexing mode of the base station configuration to the terminal.

 The terminal is further configured to indicate, to the base station, the cause of the error response message according to the binding or multiplexing manner of the base station configuration to the terminal when the error response message is sent on the subframe n+K.

The method for transmitting a correct/error response message in a multi-carrier system of the present invention includes: indicating, by a base station, a downlink allocation index related to physical downlink shared channel transmission and/or in a physical downlink control channel related to physical downlink transmission The physical downlink control channel related to the physical uplink transmission indicates a downlink allocation index related to the physical downlink shared channel transmission, and sends the physical downlink shared channel and the corresponding physical downlink control channel to the terminal;

The terminal detects the physical downlink control channel, and obtains the downlink allocation index of the subframe n according to the physical downlink control channel related to the physical downlink transmission, and obtains the downlink allocation index of the subframe n according to the physical downlink control channel related to the physical uplink transmission as ^; The number of component carriers that are actually detected by the physical downlink shared channel with the corresponding physical downlink control channel is u _DAI , and the number of component carriers transmitted by the physical downlink shared channel without the corresponding physical downlink control channel is N _SPS ;

 The terminal performs physical downlink shared channel detection according to the detected downlink configuration information of the physical downlink control channel, and obtains a correct/error response message corresponding to each codeword stream of the physical downlink shared channel of the corresponding downlink component carrier;

 The terminal performs correct/error response on the physical uplink shared channel or the physical uplink control channel according to the combination of the i, v^, u, according to the binding or multiplexing mode of the base station configuration to the terminal in the subframe n+K. The sending of the message.

When the terminal sends an error response message on the subframe n+K, the terminal further configures according to the base station. The binding or multiplexing mode set to the terminal indicates to the base station the cause of the error response message.

In the foregoing multi-carrier system and the method for transmitting the correct/error response message, the base station adds a downlink allocation index (DAI) in the downlink control information (DCI) of the physical downlink control channel, specifically, A, the base station is sharing the channel with the physical downlink. Physical downlink control channel related to PDSCH transmission

A DCI (Downlink Assignment Index) field is added to the DCI format of the PDCCH, and is used to indicate that the current downlink subframe is allocated to the UE in the current carrier scheduling order. The number of downlink component carriers.

 It is assumed here that the downlink component carriers in the downlink component carrier set are numbered in a certain order, and when scheduling is performed, PDSCH scheduling is sequentially performed on the corresponding carrier in this order.

 B. The base station adds a DAI (Downlink Assignment Index) field to the DCI format of the physical downlink control channel PDCCH related to the physical uplink shared channel PUSCH transmission, and is used to indicate the downlink allocated for the PDSCH transmission allocated to the UE in the current subframe. Number of component carriers; If the current subframe has no PDSCH to be transmitted, the value of DAI is set to 4. It is assumed here that in one downlink component carrier set, at most only one DCI format is included for PUSCH transmission of the uplink component carrier.

 When the DAI field added above is 2 bits, the specific meanings are as follows:

 Downstream allocation index DAI value

The value of the DAI field may also be more bits, for example, m bits. The specific bit combination definition may be set according to actual conditions, and details are not described herein again. DAI field in DCI format related to physical uplink shared channel PUSCH transmission When the value of the uplink DAI is 1, and the DCI format associated with the downlink PDSCH transmission is detected, the value of the uplink DAI is 1 and the number of component carriers for the PDSCH transmission is 5;

 Similarly, when the DAI field (referred to as the downlink DAI) in the DCI format related to the physical downlink shared channel PDSCH transmission has a value of 1 and more than one DCI format related to the downlink PDSCH transmission is detected, the downlink DAI is taken. A value of 1 indicates that the number of component carriers accumulated to the PDSCH transmission that the current component carrier has allocated to the terminal is five.

After configuring the DAI according to the foregoing, the base station may send the physical downlink shared channel PDSCH and the corresponding physical downlink control channel PDCCH to the terminal according to a certain scheduling algorithm in the subframe n.

 The terminal detects the subframe n, and the detection process includes:

 • The terminal performs PDCCH detection according to a certain carrier sequence, and sets VZ to be detected by the terminal.

• If the terminal detects that there is a PDCCH related to the PUSCH transmission, set the value of the DAI field in the corresponding DCI format;

 · The number of component carriers of the PDSCH transmission with the corresponding PDCCH actually detected by the terminal is set.

• The number of component carriers actually detected by the terminal without PDSCH transmission of the corresponding PDCCH is set to N _SPS ;

 • The terminal performs PDSCH detection according to the detected downlink configuration information of the PDCCH, and obtains a PDSCH transmission of the corresponding downlink component carrier corresponding to each codeword stream.

ACK/NACK response message; wherein, for a PDSCH transmission without a corresponding PDCCH (such as SPS PDSCH transmission), the terminal performs PDSCH detection according to the configuration information of the previous transmission, and obtains a corresponding PDSCH transmission of the component carrier corresponding to each codeword stream. ACK/NACK response message.

The process of feeding back the ACK/NACK to the base station in the subframe n+K according to the result of the detection on the subframe n, including four combinations:

(1) ACK/NACK bundlin binding mode, physical uplink shared channel PUSCH Feedback

 (2) using the ACK/NACK bundling binding mode, in the physical uplink control channel PUCCH feedback;

 (3) using the ACK/NACK multiplexing mode to share the PUSCH feedback on the physical uplink;

 (4) using ACK/NACK multiplexing mode, in the physical uplink control channel PUCCH feedback;

 The four feedback cases are described in detail below.

 The first type uses the ACK/NACK bundling mode to share the PUSCH feedback on the physical uplink;

 If the terminal has a physical uplink shared channel PUSCH to transmit on the subframe n+K, a correct/error response message is fed back on the physical uplink shared channel PUSCH.

 Al, when the PUSCH transmits a corresponding PDCCH, if the detection process according to the terminal in the subframe n is:

C ≠ (U _DA1 -l) mod4 + l , (here, taking DAI as 2 bits as an example) The terminal can determine that at least one downlink configuration information is lost, and then generate a NACK signal for all codeword streams (per Each codeword stream corresponds to a NACK signal), and there is

' ⁰

Otherwise, the terminal considers that there is no downlink configuration information loss, and the terminal binds the ACK/NACK response message of each codeword stream corresponding to the t/^+A^ independent PDSCH sent to the terminal in the downlink subframe n ( Bundling, also called "logical AND", only when all ACK/NACK response messages are ACK, ACK after binding, otherwise NACK), get 1 bit (corresponding to only one codeword stream) or 2 bits ( The bound ACK/NACK response message corresponding to the case of two codeword streams, and w _bmidM = ^ at this time.

When ₊ 7\^ = 0 and = 4, the terminal will not send an ACK/NACK signal.

A2, when the PUSCH transmission does not have a corresponding PDCCH, at this time, if the terminal is in the sub The detection process of frame n has _≠ ([/ _M -l)m. D4 ₊ l , the terminal can determine that at least one downlink configuration information is lost, and then generate a NACK signal for each codeword stream (each codeword stream corresponds to a NACK signal).

Otherwise, the terminal considers that there is no downlink configuration information loss, and the terminal performs a binding operation on the ACK/NACK response message of each corresponding codeword stream transmitted to the terminal in the downlink subframe n. A bound ACK/NACK response message of 1 bit (corresponding to the case of only one codeword stream) or 2 bits (corresponding to the case of two codeword streams) is obtained. At this time, ^ = (U _{DAI +} N _{SPS ) A} has no detected loss, and the value of N _bundled is the same.

When u + N _SPS = 0, the UE will not transmit an ACK/NACK signal.

 A3. In the above A1 or A2, the selection of the scrambling code sequence for scrambling the encoded ACK/NACK information is used for differentiating the base station side detection, and the UE feedback is caused by the downlink configuration information loss. NACK and the case where the UE feeds back NACK due to an error in PDSCH detection. The base station can be informed of the specific reason for the terminal to feed back the NACK.

Second, the ACK/NACK bundling mode is used to control the PUCCH feedback on the physical uplink control channel;

 If the terminal does not have a physical uplink shared channel PUSCH to transmit on the subframe n+K, the correct/error response message ACK/NACK is fed back on the physical uplink control channel PUCCH.

B1, if there is _≠ ([/ _M -i) _m according to the detection process of the terminal in subframe n. D4 ₊ i , the terminal determines that at least one downlink configuration information is lost. Since the UE detects that the downlink configuration information is lost, the UE does not send any signal on the PUCCH (in this case, the state of the UE is called DTX, discontinuous transmission), and the base station detects and detects the predetermined PUCCH. It is possible to judge that the configuration information of the terminal has been lost without signaling. This is because the base station does not have the same detection result for sending ACK, transmitting NACK, and not transmitting any signal.

Otherwise, it indicates downlink configuration information is not lost, the terminal will be sent in downlink subframe n of the terminal ^ + w _sra independently PDSCH transmission corresponding ACK / NACKs for each codeword stream binding operation, to obtain a 1-bit (corresponding to the case of only one codeword stream) or 2 bits (corresponding to two codewords) The ACK/NACK response message after the binding)

 B2, then use the PUCCH format la or lb to send the bound ACK/NACK on the PUCCH channel resource agreed by both the terminal and the base station.

Third, the ACK/NACK multiplexing mode is used to share the PUSCH feedback on the physical uplink;

 If the terminal has a physical uplink shared channel PUSCH to transmit on the subframe n+K, the correct/error response message ACK/NACK is fed back on the physical uplink shared channel PUSCH.

C1, when the PUSCH transmits the corresponding PDCCH, the UE does not feed back ACK/NACK information except for 4 and SP N _SPS = o, and the number of feedback bits of the ACK/NACK in other cases.

• In particular, when = 1 and more than 1 DCI format associated with downlink PDSCH transmission is detected, o ^ACX = +4=5

At this time, the ACK/NACK response message corresponding to each codeword stream of the PDSCH transmission demodulated according to the PDCCH on the downlink component carrier i first performs a binding operation between the codeword streams to obtain a bound ACK/NACK response message. , mapped to the 4th _{H of the} bits, where 4 _H represents the value of the DAI field in the DCI associated with the PDCCH downlink transmission.

 • In particular, when = 1 and more than one DCI format associated with downlink PDSCH transmission is detected, =5.

If the sub-frame n includes the SPS PDSCH transmission, that is, the Λ^> Ο, the ACK/NACK response message corresponding to each codeword stream transmitted by the SPS PDSCH without the PDCCH is first bound between the codeword streams. The operation will map to the last N _SPS bits in the bits in a certain order.

C2, when there is no corresponding PDCCH in the PUSCH transmission, the terminal determines, according to the size of the downlink component carrier set S configured by the base station, the number of bits to be fed back the ACK/NACK response message, o ^ACK = M, where M is the downlink configured for the UE. The number of downlink component carriers in the component carrier set.

The ACK/NACK response message corresponding to each codeword stream of the PDSCH transmission on the downlink component carrier i performs a binding operation between the codeword streams to obtain a bound ACK/NACK response message. When no PDSCH transmission is detected in a certain downlink component carrier (both with and without PDCCH detected), the corresponding ACK/NACK feedback bit is set to NACK.

The fourth type adopts ACK/NACK multiplexing mode to control PUCCH feedback on the physical uplink control channel;

If the terminal does not have a PUSCH to transmit on the subframe n+K, the terminal determines, according to the size of the downlink component carrier set S configured by the base station, the number of bits that need to feed back the ACK/NACK response message, o ^ACK = M, and M is configured for the UE. The number of downlink component carriers in the downlink component carrier set.

 Then, the ACK/NACK response message corresponding to each codeword stream transmitted by the PDSCH of each downlink component carrier is respectively subjected to a binding operation between the codeword streams to obtain M bound ACK/NACK response messages.

 If no corresponding PDCCH is detected on the downlink component carrier(s), the corresponding feedback state is DTX, and then according to the relationship between the preset feedback state and the available PUCCH channel and b(0)b(l), Select an available PUCCH channel and use format lb to send b(0)b(l). This method is also called channel selection.

In the above four transmission modes, the value of K will be sent only one of the component carrier sets according to the timing relationship of the downlink HARQ.

 The present invention provides a complete ACK/NACK feedback scheme, which is applied to a system using carrier aggregation technology, and implements ACK/NACK transmission in PUB and PUCCH in bundling or multiplexing mode.

Embodiment 1: The correct/error response message (ACK/NACK) is fed back on the physical uplink shared channel PUSCH in the bundling mode.

Embodiment 1-1: As shown in FIG. 1, the downlink component carrier set configured by the base station to the terminal is S,

S = {DLCC ₀ , DLCC, , DLCC ₂ , DLCC ₃ , DLCC ₄ } , sharing M = 4 downlink component carriers. Up in the child The component carrier for PDSCH transmission of a terminal UE is {DLCCo'DLCC DLCC, according to the first feedback mode,

 Assuming that there is no SPS transmission on the current subframe n, and the base station transmits a PDCCH related to PUSCH transmission on a certain downlink component carrier, the DAI field of the PDCCH takes a value of 3 after the present invention is used. The ACK/NACK feedback mode of the terminal is pre-configured by the base station as bundling.

 On the receiving side, assuming that the terminal correctly receives the PDCCH, the terminal obtains during the detection process:

 DL

VD, AI 3 ^J , V ^y D ^u A ^lj I = 3 ^J , 1 ^u 1 , DAI 3, N SPS 0

 Since the terminal detects that there is a PDCCH related to PUSCH transmission on the subframe n, the ACK/NACK information to be fed back by the terminal on the subframe n+K is to be transmitted on the PUSCH.

According to the detection result: (f + A^ -l oiH+ l ^ ^^ , so the terminal configuration information is not lost during the detection process, so W _bmdM = ^ = 3. Meanwhile,

 For transport block #0, the terminal will be bound to a bit information b(0) according to the detection result of the PDSCH on carriers 0, 1 and 3.

 For transport block #1, the terminal will be bound to another bit information b(l) according to the detection result of the PDSCH on carriers 0, 3.

Finally, the ACK/NACK feedback information sent on the PUSCH is b(0)b(l), and b(0)b(l) is encoded, scrambled, modulated, and mapped to the agreed resource unit (RE), and PUSCH is sent out. Among them, in the scrambling process, the choice of scrambling code depends on the value of w _bmdl .

Embodiment 1-2: As shown in FIG. 2, the downlink component carrier set configured by the base station to the terminal is S,

S = {DLCC ₀ , DLCC, , DLCC ₂ , DLCC ₃ , DLCC ₄ } , sharing M = 4 downlink component carriers. The component carrier that is scheduled to transmit PDSCH to a terminal UE in the sub-interface 为 is WLCC^DLC^DLCC, according to the first feedback mode, 2,

Assuming that there is no SPS transmission on the current subframe n, and the base station transmits a PDCCH related to PUSCH transmission on a certain downlink component carrier, the DAI field of the PDCCH takes a value of 3 after the present invention is used. The ACK/NACK feedback mode of the terminal is pre-configured by the base station as bundling.

 On the receiving side, if the terminal does not correctly receive the PDCCH corresponding to the PDSCH on component carrier #1, the terminal obtains during the detection process:

v ^y D ^U A ^L I = 3 ^J ' V ' DAI = 3 (I ΌΑ1 = 2 N SPS

 Since the terminal detects that there is a PDCCH related to PUSCH transmission on the subframe n, the ACK/NACK information to be fed back by the terminal on the subframe n+K is to be transmitted on the PUSCH.

According to the test results: (f +

Therefore, the downlink configuration information of at least one component carrier in the terminal determination detection process is lost, and thus ^^ = ^ + 2 = 5.

At the same time, the feedback bits b(0)b(l) on both transport blocks (#0, #1) will be set to NACK; finally the ACK/NACK feedback information sent on the PUSCH is b(0)b(l ), b(0)b(l) is encoded, scrambled, modulated, mapped to the agreed resource unit (RE), and sent out with the PUSCH. Among them, in the scrambling process, the choice of scrambling code depends on the value of w _bmdl .

 For the above two embodiments 1-1, 1-2,

 If the two-bit feedback information b(0)b(l) obtained in the embodiment 1-1 is NACK according to the PDSCH detection result, the b(0)b fed back in Embodiment 1-1 and Embodiment 1-2 (l) The information is the same, both are NACK, but the reasons for the two are different.

Embodiment 1-1 is because the PDSCH is not correctly detected, and Embodiment 1-2 is due to the loss of downlink configuration information of a certain downlink component carrier, and thus, by the bit encoded by b(0)b(l) During the scrambling process, different scrambling codes are selected to distinguish between the two cases. As can be seen from the above analysis, for Embodiment 1-1, the scrambling code selection will be selected according to w _bmdM = 3, and in Embodiment 1-2, the scrambling code selection will be selected according to N _hM = 5.

After receiving the ACK/NACK fed back by the terminal, the base station side can determine whether the received NACK is caused by the descrambling of the scrambling code sequence. Embodiment 1-3 As shown in FIG. 1, the configuration on the base station side is basically the same as that in Embodiment 1-1 except that the base station does not transmit the PDCCH related to PUSCH transmission on the current subframe n.

On the receiving side, if the terminal correctly receives the PDCCH, the terminal obtains during the detection process:

According to the configuration, the terminal has a PUSCH to be transmitted on the subframe n+K, but the configuration information of the PUSCH is not obtained on the subframe n, and the corresponding situation is generally SPS PUSCH transmission. According to the test results: (f -l) _m . D4 ₊ l = 3 = C Therefore, the terminal configuration information is not lost during the detection process, so ^^ = ^; ^ + ^^ = 3. Simultaneously,

 For transport block #0, the terminal will be bound to a bit information b(0) according to the detection result of the PDSCH on carriers 0, 1 and 3.

 For transport block #1, the terminal will be bound to another bit information b(l) according to the detection result of the PDSCH on carriers 0, 3.

Finally, the ACK/NACK feedback information sent on the PUSCH is b(0)b(l), and b(0)b(l) is encoded, scrambled, modulated, and mapped to the agreed resource unit (RE), and PUSCH is sent out. Among them, in the scrambling process, the choice of scrambling code depends on the value of w _bmdl .

Embodiment 1-4, as shown in Fig. 2, the configuration on the base station side is the same as that in Embodiment 1-3.

On the receiving side, if the terminal does not correctly receive the PDCCH corresponding to the PDSCH on component carrier #1, the terminal obtains during the detection process:

Since the terminal detects that there is a PDCCH related to PUSCH transmission on the subframe n, the ACK/NACK information to be fed back by the terminal on the subframe n+K is to be transmitted on the PUSCH. According to the test results: ([/ _M -l)m. D4 ₊ l = 2 _≠ ^ , so the terminal determines that the downlink configuration information of at least one component carrier is lost during the detection process, and thus W _bmdM = ^ ₊ W _sra = 2.

At the same time, the feedback bits b(0)b(l) on both transport blocks will be set to NACK; finally the ACK/NACK feedback information sent on PUSCH is b(0)b(l), b(0)b (1) After being encoded, scrambled, modulated, and mapped to the agreed resource unit (RE), it is sent out together with the PUSCH. Among them, in the scrambling process, the choice of scrambling code depends on the value of w _bmdM . For the above two embodiments 1-3, 1-4, if the two-bit feedback information b(0)b(l) finally obtained in the embodiment 1-3 is NACK according to the PDSCH detection result, the embodiment 1 -3 and the b(0)b(l) information fed back in Embodiments 1-4 are the same, both are NACK, but the causes of the two are different. Embodiment 1-3 is due to the PDSCH not being correctly detected. In the embodiment 1-4, the downlink configuration information of a certain downlink component carrier is lost, and therefore, different scrambling codes are selected by scrambling the bit encoded by b(0)b(l). Distinguish between these two situations.

As can be seen from the above analysis, for Embodiments 1-3, the scrambling code selection will be selected according to w _bmdM = 3, and in Embodiments 1-4, the scrambling code selection will be selected according to w _bmdM = 5. Finally, the base station side can determine whether the received NACK is caused by the descrambling of the scrambling code sequence.

Embodiment 2: ACK/ACK is in the multiplexing mode and is fed back on the PUSCH. Embodiment 2-1: As shown in Fig. 3, the configuration on the base station side is basically the same as that in Embodiment 1-1 except that the ACK/NACK configuration of the terminal is in the multiplexing mode.

 The base station is configured to give the terminal the next component of the carrier set to S,

S = {DLCC ₀ , DLCC, , DLCC ₂ , DLCC ₃ , DLCC ₄ } , sharing M = 4 downlink component carriers. The component carrier that is scheduled to transmit PDSCH to a terminal UE in the sub-interface 为 is WLCC^DLC^DLCC, according to the first feedback mode,

 Assuming that there is no SPS transmission on the current subframe n, and the base station transmits a PDCCH related to PUSCH transmission on a certain downlink component carrier, the DAI field of the PDCCH takes a value of 3 after the present invention is used. The ACK/NACK of the terminal is configured as the multiplexing mode.

 On the receiving side, assuming that the terminal correctly receives the PDCCH, the terminal obtains during the detection process:

V ' D ^D A ^L I = 3 J, V'D"A ¹ -I = 3 U DAI = 3 ^, N ¹ , SPS = 0 "

Since the terminal detects that there is a PDCCH related to PUSCH transmission on the subframe n, the terminal The ACK/NACK information to be fed back on the subframe n+K will be transmitted on the PUSCH.

According to the test result: = 3 , U _{DA! +} N _SPS = 3 , so the number of ACK/NACK bits that the terminal needs to feed back Ο = ^=3. The DAI fields of the PDCCH corresponding to the PDSCHs of the downlink component carriers #0, #1, and #3 are 1, 2, 3, respectively, and therefore the ACK/NACK response messages of the PDSCH transmission of the downlink component carriers #0, #1, #3 are passed. The corresponding ACK/NACK response message {HARQ_ACK(0), HARQ_ACK(1), HARQ_ACK(2)} obtained after the bundling operation between codeword streams will be mapped to the first, second and third of the 3 bits respectively. Bit. Since there is no SPS PDSCH transmission in the subframe n, the terminal finally feeds back {HARQ_ACK(0), HARQ_ACK(1), HARQ_ACK(2)} with a total of 3 bits of information. After the 3 bits of information are coded and modulated, the mapping is good. On the resource unit (RE), it is sent out with the PUSCH.

Embodiment 2-2: As shown in Fig. 4, the configuration on the base station side is basically the same as that in Embodiment 2-1 except that there is SPS PDSCH transmission of the UE on component carrier #2.

 On the receiving side, assuming that the terminal correctly receives the PDCCH, the terminal obtains during the detection process:

v ^V D ^D A ^L I = 3 ^J , V ^V D ^U A ^L I = 3 ^J -> I ^U I DAI =3 ^J -> ^L N SPS =0 ^U

Since the terminal detects that there is a PDCCH related to PUSCH transmission on the subframe n, the ACK/NACK information to be fed back by the terminal on the subframe n+K is to be transmitted on the PUSCH. According to the test results, we have: =4 , U _{DAI +} N _SPS = 4 , so the number of ACK/NACK bits that the terminal needs to feed back o ^{ACK =} v = 4. The DAI fields of the PDCCH corresponding to the PDSCHs of the downlink component carriers #0, #1, #3 are 1, 2, 3 respectively, and therefore the ACK/NACK response messages of the PDSCH transmission of the downlink component carriers #0, #1, #3 are passed. The corresponding ACK/NACK response message {HARQ_ACK(0), HARQ_ACK(1), HARQ_ACK(2)} obtained after the bundling operation between codeword streams will be mapped to the first, second and third of the 4 bits respectively. Bit.

Since the SPS PDSCH transmission is performed on the component carrier #2 of the subframe n, the ACK/NACK response message corresponding to the SPS PDSCH transmission passes the bundling between the codeword streams, and the corresponding ACK/NACK response message HARQ_ACK(3) Will be mapped to the last bit of these 4 bits, together with {HARQ_ACK(0), HARQ_ACK(1), HARQ_ACK(2)}, and finally get {HARQ_ACK(0), HARQ_ACK(1), HARQ_ACK(2), HARQ_ACK (3)} a total of 4 bit letters After the coded modulation, the 4-bit information is mapped to the agreed resource unit (RE) and transmitted together with the PUSCH.

Embodiment 2-3: As shown in FIG. 5, the configuration on the base station side is the same as that in Embodiment 2-1.

 On the receiving side, it is assumed that the terminal does not correctly receive the PDSCH corresponding to component carrier #1.

PDCCH, the terminal gets during the detection process:

v ' D ^D A ^L I = 3 J, V' D ^U A ^L I = 3 U DAI = 2, N " SPS = 0 "

Since the terminal detects that there is a PDCCH related to PUSCH transmission on the subframe n, the ACK/NACK information to be fed back by the terminal on the subframe n+K is to be transmitted on the PUSCH. According to the test result: v = 3 , U _{DAI +} N _SPS = 2 , so the number of ACK/NACK bits that the terminal needs to feed back is o = _m m(^^, 4)=3. The DAI fields of the PDCCH corresponding to the PDSCHs of the downlink component carriers #0, #3 are 1, 3 respectively, and therefore the ACK/NACK response message of the PDSCH transmission of the downlink component carriers #0, #3 passes the bundling operation between the codeword streams. The resulting corresponding ACK/NACK response message {HARQ_ACK(0), HARQ_ACK(2)} will be mapped to the 1st and 3rd bits of the 3 bits, respectively. The terminal can determine that the downlink configuration information of a downlink component carrier is lost, and according to the DAI information of the component carriers #0 and #3, the terminal can determine the downlink component carrier #1 or #2. The PDCCH corresponding to the PDSCH transmission is lost, and the specific downlink component carrier terminal cannot be known. However, the terminal only needs to set the feedback information of HARQ_ACK(1) to NACK, and the terminal will eventually feed back {HARQ_ACK(0), HARQ_ACK(1), HARQ_ACK(2)} has a total of 3 bits of information. After the 3 bits of information are coded and modulated, they are mapped to a reserved resource unit (RE) and transmitted together with the PUSCH.

 When the base station side detects that the information corresponding to the HARQ_ACK(1) is NACK, it can be determined that the downlink component carrier #1 has a downlink configuration information loss or a PDSCH detection error.

Embodiment 2-4: As shown in FIG. 6, the configuration on the base station side is the same as that in Embodiment 2-2.

 On the receiving side, if the terminal does not correctly receive the PDCCH corresponding to the PDSCH on component carrier #1, the terminal obtains during the detection process:

V ^y DAI = 3 ^J ^ V ^y DAI = 4 ( ^U I DAI = 2 ¹ N ^V SPS = 1 ¹ Since the terminal detects that there is a PDCCH related to PUSCH transmission on the subframe n, the ACK/NACK information to be fed back by the terminal on the subframe n+K is to be transmitted on the PUSCH. According to the test result: v = U _{DAI +} N _sps = 2 , so the number of ACK/NACK bits that the terminal needs to feed back is o = _m m(^^, 4) = 4. The DAI fields of the PDCCH corresponding to the PDSCHs of the downlink component carriers #0 and #3 are 1, 3 respectively, and therefore the ACK/NACK response message of the PDSCH transmission of the downlink component carriers #0, #3 passes the bundling operation between the codeword streams. The resulting corresponding ACK/NACK response message {HARQ_ACK(0), HARQ_ACK(2)} will be mapped to the 1st and 3rd bits of the 3 bits, respectively.

 Since the SPS PDSCH transmission is performed on the component carrier #2 of the subframe n, the ACK/NACK response message corresponding to the SPS PDSCH transmission passes the bundling between the codeword streams, and the corresponding ACK/NACK response message HARQ_ACK(3) Will map to the last of these 4 bits.

The terminal can determine that the downlink configuration information of a certain downlink component carrier is lost, and according to the DAI information of the component carriers #0 and #3, and the terminal knows that there is SPS PDSCH transmission on the downlink component carrier #2, because ^≠ U _{DAI +} N _SPS The terminal may determine that the PDCCH corresponding to the PDSCH transmission on the downlink component carrier #1 is lost.

 Therefore, the terminal sets the feedback information of HARQ_ACK(l) to NACK, and finally gets

{HARQ_ACK(0), HARQ_ACK(1), HARQ_ACK(2), HARQ_ACK(3)} A total of 4 bits of information, which is coded and modulated, mapped to a reserved resource unit (RE), together with PUSCH Send it out.

 When the base station side detects that the information corresponding to the HARQ_ACK(1) is NACK, it can be determined that the downlink component carrier #1 has a downlink configuration information loss or a PDSCH detection error.

 It can be seen from Embodiments 2-1 to 2-4 that when the corresponding PDCCH is transmitted in the PUSCH, the number of feedback bits of the ACK/NACK multiplexed in the multiplexing mode fed back on the PUSCH will depend on O = mm (VZ, 4), then determining the position of the ACK/NACK bit of the corresponding component carrier in the bit according to the DAI field of the PDCCH;

For a downlink component carrier that does not detect the PDSCH, its corresponding ACK/NACK bit will be set to NACK, and finally the ACK/NACK bit corresponding to the SPS PDSCH is mapped to the last bits of the bit. Embodiment 2-5, as shown in FIG. 7, the configuration on the base station side is basically the same as that in Embodiment 2-1 except that the base station does not transmit the PDCCH related to the PUSCH transmission on the current subframe n.

 On the receiving side, assuming that the terminal correctly receives the PDCCH, the terminal obtains during the detection process:

U _DAI = N _SPS = 0 According to the configuration, the terminal has a PUSCH to be transmitted on the subframe n+K, but the configuration information of the PUSCH is not obtained on the subframe η, and the corresponding situation is generally SPS PUSCH transmission. At this time, the number of ACK/NACK bits to be fed back by the terminal is . = M=4. That is, each downlink component carrier corresponds to 1 bit of ACK/NACK feedback information (that is, regardless of whether or not the PDSCH transmission is detected on the component carrier, the corresponding ACK/NACK is fed back, and if the PDSCH transmission is not detected, the corresponding The feedback bit is set to NACK), the number of the carrier component is sequentially corresponding to the 4-bit information of the final feedback, and the ACK/NACK response message of the PDSCH transmission of the downlink component carriers #0, #1, #3 passes the bundling operation between the codeword streams. The corresponding ACK/NACK response message {HARQ_ACK(0), HARQ_ACK(1), HARQ_ACK(3)} obtained later will be mapped to the 1st, 2nd, and 4th bits of the 4 bits, respectively.

 Since the terminal does not detect the PDSCH transmission on the downlink component carrier #2, the ACK/NACK feedback bit HARQ_ACK(2) corresponding to the component carrier #2 will be set to NACK. In addition, there is no SPS PDSCH transmission in the subframe n, therefore, the terminal finally feeds back {HARQ_ACK(0), HARQ_ACK(1), HARQ_ACK(2), HARQ_ACK(3)} with 4 bits of information, and the 4 bits of information are passed. After the coded modulation, it is mapped to the agreed resource unit (RE) and sent out together with the PUSCH.

Embodiment 2-6: As shown in Fig. 8, the configuration on the base station side is basically the same as that in Embodiment 2-2 except that the base station does not transmit the PDCCH related to the PUSCH transmission on the current subframe n.

 On the receiving side, assuming that the terminal correctly receives the PDCCH, the terminal obtains during the detection process:

According to the configuration, the terminal has a PUSCH to be transmitted on the subframe n+K, but the configuration information of the PUSCH is not obtained on the subframe n, and the corresponding situation is generally SPS PUSCH transmission. At this time, the number of ACK/NACK bits to be fed back by the terminal is . = M=4. That is, each downlink component The wave corresponds to 1 bit of ACK/NACK feedback information (that is, regardless of whether or not the PDSCH transmission is detected on the component carrier, the corresponding ACK/NACK is fed back, and if the PDSCH transmission is not detected, the corresponding feedback bit is set to NACK. The number of the carrier component corresponds to the 4-bit information of the final feedback, and the ACK/NACK response message of the PDSCH transmission of the downlink component carriers #0, #1, #3 passes the corresponding ACK obtained after the bundling operation between the codeword streams. The /NACK response message {HARQ_ACK(0), HARQ_ACK(1), HARQ_ACK(3)} will be sequentially mapped to the 1st, 2nd, and 4th bits of the 4 bits.

 In addition, there is SPS PDSCH transmission on the component carrier #2 on the subframe η. Therefore, the terminal maps the corresponding ACK/NACK feedback information HARQ_ACK(2) to the 3rd bit of the 4 bits, and the terminal finally feeds back {HARQ_ACK. (0), HARQ - ACK (1), HARQ - ACK (2), HARQ - ACK (3)} a total of 4 bits of information, the 4 bits of information are encoded and modulated, mapped to the agreed resource unit (RE) , sent out with PUSCH.

Embodiment 2-7: As shown in Fig. 9, the configuration on the base station side is the same as that in Embodiment 2-3 except that the base station does not transmit the PDCCH related to PUSCH transmission on the current subframe n.

 On the receiving side, if the terminal does not correctly receive the PDCCH corresponding to the PDSCH on component carrier #1, the terminal obtains during the detection process:

v ^V D ^D A ^L I = 3 ^J ' V ^V D ¹ ^AI = 3 ^J , UU DAI = 2厶, ¹ N SPS = 0 ^U

 According to the configuration, the terminal has a PUSCH to be transmitted in the subframe n+K, but the configuration information of the PUSCH is not obtained in the subframe n, and the corresponding situation is generally SPS PUSCH transmission. At this time, the number of ACK/NACK bits to be fed back by the terminal is . =M=4. That is, each downlink component carrier corresponds to 1 bit of ACK/NACK feedback information (that is, regardless of whether or not the PDSCH transmission is detected on the component carrier, the corresponding ACK/NACK is fed back, and if the PDSCH transmission is not detected, the corresponding The feedback bit is set to NACK), the number of the carrier component is sequentially corresponding to the 4-bit information of the final feedback, and the ACK/NACK response message of the PDSCH transmission of the downlink component carrier #0, #3 is obtained by the bundling operation between the codeword streams. The corresponding ACK/NACK response message {HARQ ACK(O), HARQ_ACK(3)} will be mapped to the 1st and 4th bits of the 4 bits, respectively.

Since the terminal does not detect the PDSCH transmission on the downlink component carrier #2, The ACK/NACK feedback bit HARQ_ACK(2) corresponding to wave #2 will be set to NACK.

 Meanwhile, since the terminal does not correctly receive the PDCCH corresponding to the PDSCH on the component carrier #1, the terminal cannot demodulate the PDSCH on the component carrier #1, and therefore, the ACK/NACK feedback bit corresponding to the component carrier #1 HARQ_ACK(l) will also be set to NACK.

 In addition, there is no SPS PDSCH transmission in subframe n, therefore, the terminal finally feeds back {HARQ_ACK(0), HARQ_ACK(1), HARQ_ACK(2), HARQ_ACK(3)} with 4 bits of information, and the 4 bits of information are coded and modulated. After that, it is mapped to the agreed resource unit (RE) and sent out together with the PUSCH.

Embodiment 2-8: As shown in Fig. 10, the configuration on the base station side is the same as that in Embodiment 2-4 except that the base station does not transmit the PDCCH related to PUSCH transmission on the current subframe n.

 On the receiving side, if the terminal does not correctly receive the PDCCH corresponding to the PDSCH on component carrier #1, the terminal obtains during the detection process:

T uT DAI = 2 N SPS = 1 ¹

 According to the configuration, the terminal has a PUSCH to be transmitted in the subframe n+K, but the configuration information of the PUSCH is not obtained in the subframe n, and the corresponding situation is generally SPS PUSCH transmission. At this time, the number of ACK/NACK bits to be fed back by the terminal is . = M=4. That is, each downlink component carrier corresponds to 1 bit of ACK/NACK feedback information (that is, regardless of whether or not the PDSCH transmission is detected on the component carrier, the corresponding ACK/NACK is fed back, and if the PDSCH transmission is not detected, the corresponding The feedback bit is set to NACK), the number of the carrier component is sequentially corresponding to the 4-bit information of the final feedback, and the ACK/NACK response message of the PDSCH transmission of the downlink component carrier #0, #3 is obtained by the bundling operation between the codeword streams. The corresponding ACK/NACK response message {HARQ ACK(O), HARQ_ACK(3)} will be mapped to the 1st and 4th bits of the 4 bits, respectively.

 Since the terminal does not correctly receive the PDCCH corresponding to the PDSCH on the component carrier #1, the terminal cannot demodulate the PDSCH on the component carrier #1, and therefore, the ACK/NACK feedback bit HARQ corresponding to the component carrier #1— ACK(l) will also be set to NACK.

In addition, there is SPS PDSCH transmission on the component carrier #2 on the subframe n. Therefore, the terminal maps the corresponding ACK/NACK feedback information HARQ_ACK(2) to the third bit of the 4 bits, and the terminal finally Feedback {HARQ_ACK(0), HARQ_ACK(1), HARQ_ACK(2), HARQ_ACK(3)} A total of 4 bits of information, which are encoded and modulated and mapped to the agreed resources. On the unit (RE), it is sent out together with the PUSCH.

It can be seen from Embodiments 2-5 to 2-8 that when there is no corresponding PDCCH in the PUSCH transmission, the number of feedback bits of the ACK/NACK multiplexed in the multiplexing mode fed back on the PUSCH will depend on O^=M, where M is the number of downlink component carriers in the downlink component carrier set allocated to the UE, and no matter whether the PDSCH transmission is detected on the component carrier, the corresponding ACK/NACK is fed back, and the PDSCH transmission is not detected (including the base station The PDSCH scheduling is not performed on the component carrier and the corresponding PDCCH is lost. The corresponding feedback bits are all set to NACK.

Example 2-9:

 As shown in FIG. 11, the downlink component carrier set configured by the base station to the terminal is S.

S = {DLCC ₀ , DLCC _X , DLCC ₂ , DLCC, , DLCC ₄ } , total Μ = 5 downlink component carriers. The component carrier that schedules a PDSCH transmission for a certain UE on the subframe n is {DLCCo'DLC 'DLC 'DLC 'DLCCJ , then after using the present invention,

 The base station transmits a PDCCH related to the PUSCH transmission on a certain downlink component carrier. After the present invention, the DAI field of the PDCCH has a value of 1. The ACK/NACK feedback mode of the terminal is used for multiplexing.

 On the receiving side, assuming that the terminal correctly receives the PDCCH, the terminal obtains during the detection process:

v ^y D ^U A ^L I = 3 ^J ' V ' DAI = 3 (I ΌΑ1 = 3 ^J ' N丄, SPS Since the terminal detects that there is a PDCCH related to PUSCH transmission on the subframe n, the ACK/NACK information to be fed back by the terminal on the subframe n+K is to be transmitted on the PUSCH. According to the detection result: v = U _{DAI +} N _sps = 3 , since the terminal detects more than one DCI format related to downlink PDSCH transmission (here, actually ⁵ PDCCHs related to PDSCH transmission are detected), the terminal The number of ACK/NACK bits that need feedback = ^+4=5. The DAI fields of the PDCCH corresponding to the PDSCHs of the downlink component carriers #0, #1, #2, #3 are 1, 2, 3, 4, respectively, and therefore the PDSCHs of the downlink component carriers #0, #1, #2, #3 The corresponding ACK/NACK response message {HARQ_ACK(0), HARQ_ACK(1), HARQ_ACK(2), HARQ_ACK(3)} obtained by the transmitted ACK/NACK response message after the bundling operation between the codeword streams will be separately mapped. To the 5th, 1st, 2nd, 3rd and 4th places.

 For downlink component carrier #4, since its terminal = ι, its terminal detects more than one PDCCH related to downlink PDSCH transmission, therefore, the ACK/NACK response message of PDSCH transmission of downlink component carrier #4 passes between codeword streams The ACK/NACK response message HARQ_ACK(4) obtained after the bundling operation will be mapped to the 5th bit of the 5-bit feedback information to be finally transmitted.

 Since there is no SPS PDSCH transmission on subframe n, the final feedback of the terminal

{HARQ_ACK(0), HARQ_ACK(1), HARQ_ACK(2), HARQ_ACK(3), HARQ_ACK(4)} A total of 5 bits of information, which are encoded and modulated and mapped to the agreed resource unit (RE) Up, send out with PUSCH.

Embodiment 3: ACK/NACK is in bundling mode and is fed back on PUCCH.

 Embodiment 3-1: As shown in FIG. 1, the downlink component carrier set configured by the base station to the terminal is S,

S = {DLCC ₀ , DLCC, , DLCC ₂ , DLCC ₃ , DLCC ₄ } , sharing M = 4 downlink component carriers. After the component carrier that is scheduled to transmit PDSCH to the UE in the sub-interface n is WLCCo'DLC 'DLCC, after using the present invention,

Assume that there is no SPS transmission on the current subframe n, and the base station transmits on a certain downlink component carrier. After the PDCCH associated with the PUSCH transmission, the DAI field of the PDCCH has a value of three. The ACK/NACK feedback mode of the terminal is configured as bundling

 On the receiving side, assuming that the terminal correctly receives the PDCCH, the terminal obtains during the detection process:

y DAI ^J ' ^y DAI ^J -> ^u DAI ^J ' ^v 5 5 ^w

Since the terminal does not have a PUSCH to transmit on the subframe n+K, the ACK/NACK information to be fed back by the terminal on the subframe n+K is to be transmitted on the PUCCH. According to the detection result: (U _DA1 + N _SPS -l) mod4 + l = 3 = ^ , so the terminal determines that no downlink configuration information is lost during the detection process. For the transmission block #0, the terminal will be based on the carriers 0, 1 and 2. The detection result of the PDSCH is bound to one bit information b(0). For the transport block #1, the terminal binds the detection result of the PDSCH on the carrier 0, 2 to another bit information b(l); Then, the PUCCH format lb is used to transmit the bundled ACK/NACK bit information b(0)b(l) on the PUCCH channel resource agreed by both the terminal and the base station.

Embodiment 3-2: As shown in Fig. 2, the configuration on the base station side is the same as that in Embodiment 3-1.

 On the receiving side, it is assumed that the terminal does not correctly receive the PDSCH corresponding to component carrier #1.

PDCCH, the terminal gets during the detection process:

v ^y D ^D A ^L I =― ^J , V ^v D ^U A ^L I ii — ³ , UU DAI = ^Δ 2-> ^ N SPS = 0 ^v

Since the terminal does not have a PUSCH to transmit on the subframe n+K, the ACK/NACK information to be fed back by the terminal on the subframe n+K is to be transmitted on the PUCCH. According to the detection result: {U _DAI + N _SPS -l) mod4 + l = 2≠ ^ , so the terminal determines that the downlink configuration information of at least one downlink component carrier is lost during the detection process, and the terminal will not send any signal at this time.

Embodiment 4: ACK/NACK is in the multiplexing mode and is fed back on the PUCCH. As shown in Figure 7, the configuration of the base station side is the same as that of the embodiment 3-1 except that the feedback mode of the ACK/NACK is _ _ for the „

Since the terminal does not have a PUSCH to transmit on the subframe n+K, the ACK/NACK information to be fed back by the terminal on the subframe n+K is to be transmitted on the PUCCH. The terminal determines, according to the size of the downlink component carrier set S configured by the base station, the number of bits that need to feed back the ACK/NACK response message ^= Μ=4, and then separately transmits the ACK/NACK response message of the corresponding codeword stream to the PDSCH of each downlink component carrier. The binding operation is performed to obtain M binding feedback states {HARQ_ACK(0), HARQ_ACK(1), ―., HARQ ACK(Ml)}, and no corresponding detection is detected on the downlink component carrier(s). For the PDCCH, the corresponding feedback state is DTX, and then according to the relationship between the preset feedback state and the available PUCCH channel and b(0)b(l), an available PUCCH channel is selected, and format lb is used to send b ( 0) b(l).

 The mapping relationship between the feedback status {HARQ_ACK(0), HARQ_ACK(1), ―., HARQ ACK(M-l)} and the available PUCCH channel and b(0)b(l) is related to the value of M. Tables 2 to 5 below show some specific examples of the mapping relationship at M=5/4/3/2.

 Table 2: Mapping relationship between feedback state and available PUCCH channel and b(0)b(l) when M=5

NACK/DTX ACK ACK NACK/DTX ACK 〃PUCCH,1 1,0

NACK/DTX ACK NACK/DTX NACK/DTX ACK 〃PUCCH,1 1,0

ACK NACK/DTX ACK ACK NACK/DTX 〃PUCCH, 2 1,0

ACK NACK/DTX ACK NACK/DTX NACK/DTX 〃PUCCH, 2 1,0

NACK/DTX ACK NACK/DTX ACK ACK 〃PUCCH,3 1,0

NACK/DTX ACK NACK/DTX ACK NACK/DTX 〃PUCCH,3 1,0

NACK/DTX ACK ACK NACK/DTX ACK 〃PUCCH, 4 1,0

NACK/DTX ACK NACK/DTX NACK/DTX ACK 〃PUCCH,4 1,0

ACK NACK/DTX NACK/DTX NACK/DTX NACK/DTX 〃PUCCH, 0 0,1

ACK NACK/DTX NACK/DTX NACK/DTX ACK 〃PUCCH, 0 0,1

NACK/DTX ACK NACK/DTX NACK/DTX NACK/DTX 〃PUCCH, 1 0,1

ACK ACK NACK/DTX NACK/DTX NACK/DTX 〃PUCCH, 1 0,1

NACK/DTX NACK/DTX ACK NACK/DTX NACK/DTX 〃PUCCH, 2 0,1

NACK/DTX ACK ACK NACK/DTX NACK/DTX 〃PUCCH, 2 0,1

NACK/DTX NACK/DTX NACK/DTX ACK NACK/DTX 〃PUCCH, 3 0,1

NACK/DTX NACK/DTX ACK ACK NACK/DTX 〃PUCCH, 3 0,1

NACK/DTX NACK/DTX NACK/DTX NACK/DTX ACK 〃PUCCH, 4 0,1

NACK/DTX NACK/DTX NACK/DTX ACK ACK 〃PUCCH, 4 0,1

NACK NACK/DTX NACK/DTX NACK/DTX NACK/DTX 〃PUCCH,0 0,0

DTX NACK NACK/DTX NACK/DTX NACK/DTX 〃PUCCH,1 0,0

DTX DTX NACK NACK/DTX NACK/DTX 〃PUCCH, 2 0,0

DTX DTX DTX NACK NACK/DTX 〃PUCCH, 3 0,0

DTX DTX DTX DTX NACK N/AN/A DTX DTX DTX DTX DTX N/AN/A Table 3: Mapping relationship between feedback state and available PUCCH channel and b(0)b(l) when M=4

Table 4: Mapping relationship between feedback state and available PUCCH channel and b(0)b(l) when M=3

Table 5: Mapping relationship between feedback state and available PUCCH channel and b(0)b(l) when M=2

The above is only the 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, equivalents, improvements, etc., made within the spirit and scope of the invention are intended to be included within the scope of the appended claims.

Industrial applicability

 The multi-carrier system under the large bandwidth of the present invention, and the method for transmitting the correct/error response message in the multi-carrier system, can implement the sending of the ACK/NACK response message when the downlink configuration information may be lost in the multi-carrier system. . Further, if the NACK response message is fed back, the terminal may also indicate to the base station the reason why the NACK response occurs when transmitting. There are two ways to use the two channels for feedback, which has good applicability and flexibility.

Claims

Claim

 A method for transmitting a correct/error response message in a multi-carrier system, comprising:

 The base station indicates a downlink allocation index related to the physical downlink shared channel transmission on the physical downlink control channel related to the physical downlink transmission and/or indicates a downlink related to the physical downlink shared channel transmission on the physical downlink control channel related to the physical uplink transmission. Allocating an index, sending a physical downlink shared channel and a corresponding physical downlink control channel to the terminal;

The terminal detects the physical downlink control channel, and obtains the downlink allocation index of the subframe n according to the physical downlink control channel related to the physical downlink transmission, and obtains the downlink allocation index of the subframe n according to the physical downlink control channel related to the physical uplink transmission as ^; The number of component carriers that are actually detected by the physical downlink shared channel with the corresponding physical downlink control channel is u _DAI , and the number of component carriers transmitted by the physical downlink shared channel without the corresponding physical downlink control channel is N _sps ;

 The terminal performs physical downlink shared channel detection according to the detected downlink configuration information of the physical downlink control channel, and obtains a correct/error response message corresponding to each codeword stream of the physical downlink shared channel of the corresponding downlink component carrier;

 The terminal performs correct/error response on the physical uplink shared channel or the physical uplink control channel according to the combination of the i, v^, u, according to the binding or multiplexing mode of the base station configuration to the terminal in the subframe n+K. The sending of the message.

 2. The transmitting method according to claim 1, further comprising:

 When the terminal sends an error response message on the subframe n+K, the terminal indicates to the base station the cause of the error response message according to the binding or multiplexing mode configured by the base station to the terminal.

 3. The transmitting method according to claim 1, wherein

 The step of indicating, by the base station, the downlink allocation index related to the physical downlink shared channel transmission on the physical downlink control channel related to the physical downlink transmission, includes: in a downlink control information format of the physical downlink control channel related to the physical downlink shared channel transmission Adding a downlink allocation index DAI field, which is used to indicate the number of downlink component carriers used for physical downlink shared channel transmission allocated to the terminal of the current downlink component carrier in the current subframe according to a certain carrier scheduling order;

The step of indicating, by the base station, the downlink allocation index related to the physical downlink shared channel transmission on the physical downlink control channel related to the physical uplink transmission includes: transmitting the channel with the physical uplink A downlink allocation index DAI field is added to the downlink control information format of the associated physical downlink control channel, and is used to indicate the number of downlink component carriers allocated for the physical downlink shared channel transmission in the current subframe.

 4. The transmitting method according to claim 3, wherein

 The step of detecting, by the terminal, the physical downlink control channel, and obtaining the downlink allocation index of the subframe n according to the physical downlink control channel related to the physical downlink transmission, includes: the terminal performing physical downlink control channel detection according to a certain carrier sequence, and detecting the terminal The value of the DAI field in the downlink control information format associated with the physical uplink shared channel transmission;

 The step of detecting, by the terminal, the physical downlink control channel, and obtaining the downlink allocation index of the subframe n according to the physical downlink control channel related to the physical uplink transmission, includes: the terminal detecting that there is a physical downlink control channel related to the physical uplink shared channel transmission, Then, the value of the DAI field in the downlink control information format of the corresponding physical downlink control channel is set.

 The transmission method according to claim 1, wherein the terminal is configured on the physical uplink shared channel or the physical uplink control channel according to the combination of the I and vu in the subframe n+K, according to the configuration of the base station to the terminal. The steps of binding or multiplexing the correct/error response message are:

 If the terminal has a physical uplink shared channel to transmit on the subframe n+K, the correct/error response message is fed back on the physical uplink shared channel, and if not, the correct/error response message is fed back on the physical uplink control channel.

 6. The transmitting method according to claim 5, wherein

 The terminal uses the binding mode, and when the physical uplink shared channel feeds back the correct/error response message, the step of feeding back the correct/error response message on the physical uplink shared channel includes: first determining whether at least one downlink configuration information is lost, if any Then, all the codeword streams generate an error response signal; if not, the ί/^+Λ^ independent physical downlink shared channel transmits the corresponding correct/error response message of each codeword stream, and the binding is performed. The correct/error response message is then shared in the physical uplink shared channel.

 7. The transmitting method according to claim 6, wherein

After the terminal binds the correct/error response message, if the error response signal is obtained, the terminal will be tied. The step of determining the correct/error response message in the physical uplink shared channel includes: determining the corresponding binding number, and selecting the scrambling error message for the error response message.

 8. The transmitting method according to claim 5, wherein

The terminal uses the binding mode, and when the physical uplink control channel feeds back the correct/error response message, the step of feeding back the correct/error response message on the physical uplink control channel includes: first determining whether at least one downlink configuration information is lost, if any , the terminal does not send any correct/error response signal; otherwise, the U _{DA1 +} N _SPS independent physical downlink shared channel transmits the corresponding correct/error response message of each codeword stream, and the binding is correct/ The error response message is fed back on the physical uplink control channel.

 The transmitting method according to claim 8, wherein the step of feeding back the bound correct/error response message on the physical uplink control channel comprises:

 The terminal uses the format l a or lb of the physical uplink control channel to send the bound correct/error response message.

 10. The transmitting method according to claim 5, wherein

 The terminal uses the multiplexing mode, and when the physical uplink shared channel feeds back the correct/error response message, the step of feeding back the correct/error response message on the physical uplink shared channel includes: first, according to the number of downlink component carriers in the downlink component carrier set Or the i determines the number of feedback bits of the correct/error response message, and after performing the binding operation between the codeword streams on the correct/error response message detected on each codeword stream, mapping the binding value to the feedback bit number In the corresponding bit.

 The transmitting method according to claim 5, wherein

 The terminal uses the multiplexing mode. When the physical uplink control channel feeds back the correct/error response message, the step of feeding back the correct/error response message on the physical uplink control channel includes:

 First, the number of feedback bits of the correct/error response message is determined according to the number of downlink component carriers in the downlink component carrier set, and the correct/error response message detected on each codeword stream is subjected to a binding operation between codeword streams. Feedback bit number of bound correct/error response messages;

 Then select an available physical uplink control channel and use the format lb to send the correct binding.

/ error response message.

The transmitting method according to claim 1 or 5, wherein The value of the K is determined according to the timing relationship of the downlink hybrid automatic request retransmission.

 The transmitting method according to claim 1 or 3, wherein the physical downlink control channel associated with the physical uplink shared channel transmission transmits only one of the downlink component carrier sets.

 14. A multi-carrier system, comprising: a base station and a terminal, wherein:

 The base station is configured to: indicate a downlink allocation index related to physical downlink shared channel transmission on a physical downlink control channel related to physical downlink transmission, and/or indicate physical downlink on a physical downlink control channel related to physical uplink transmission Sharing a downlink allocation index related to channel transmission, and sending a physical downlink shared channel and a corresponding physical downlink control channel to the terminal;

The terminal is configured to: detect a physical downlink control channel, obtain a downlink allocation index of the subframe n according to the physical downlink control channel related to the physical downlink transmission, and obtain a downlink of the subframe η according to the physical downlink control channel related to the physical uplink transmission. The allocation index is ^; the actually detected number of component carriers of the physical downlink shared channel transmission with the corresponding physical downlink control channel is u _DM , and the number of component carriers transmitted by the physical downlink shared channel without the corresponding physical downlink control channel is N _SPS ;

 The terminal is further configured to: perform physical downlink shared channel detection according to the detected downlink configuration information of the physical downlink control channel, and obtain a correct/error response corresponding to each codeword stream of the physical downlink shared channel of the corresponding downlink component carrier. Message; on the subframe n+K, according to the I, C,

The combination of U _DAI and the physical uplink shared channel or the physical uplink control channel performs the transmission of the correct/error response message according to the binding or multiplexing mode of the base station configuration to the terminal.

 15. The multi-carrier system according to claim 14, wherein

 The terminal is further configured to: when performing the error response message transmission on the subframe n+K, indicate the cause of the error response message to the base station according to the binding or multiplexing manner of the base station configuration to the terminal.

 16. The multi-carrier system according to claim 14, wherein

The base station is configured to indicate a downlink allocation index related to physical downlink shared channel transmission on a physical downlink control channel related to physical downlink transmission in a manner of: downlink control of a physical downlink control channel related to physical downlink shared channel transmission Adding a downlink allocation index DAI field to the information format, which is used to indicate the number of downlink component carriers used for physical downlink shared channel transmission allocated to the current downlink component carrier in the current subframe according to a certain carrier scheduling order; The base station is configured to indicate a downlink allocation index related to physical downlink shared channel transmission on a physical downlink control channel related to physical uplink transmission in a manner of: downlink control of a physical downlink control channel related to physical uplink shared channel transmission A downlink allocation index DAI field is added to the information format, and is used to indicate the number of downlink component carriers allocated for the physical downlink shared channel transmission in the current subframe.

 17. The multi-carrier system according to claim 16, wherein

 The terminal is configured to detect the physical downlink control channel in the following manner, and obtain the downlink allocation index of the subframe n according to the physical downlink control channel related to the physical downlink transmission to be I: perform physical downlink control channel detection according to a certain carrier sequence, The value of the DAI field in the downlink control information format related to the physical uplink shared channel transmission detected by the terminal;

 The terminal is configured to detect the physical downlink control channel in the following manner, and obtain a downlink allocation index of the subframe n according to the physical downlink control channel related to the physical uplink transmission: 3⁄4: detecting a physical downlink related to the physical uplink shared channel transmission The control channel is set to the value of the DAI field in the downlink control information format of the corresponding physical downlink control channel.

 18. The multi-carrier system according to claim 14, wherein

 The terminal is configured to send a correct/error response message in the following manner: if there is a physical uplink shared channel to be transmitted on the subframe n+K, the correct/error response message is fed back on the physical uplink shared channel, otherwise, in the physical A correct/error response message is fed back on the uplink control channel.

 19. The multi-carrier system of claim 18, wherein

 The terminal is configured to use the binding mode to feed back a correct/error response message on the physical uplink shared channel: first, it is determined whether at least one downlink configuration information is lost, and if so, all codeword streams generate an error response. Signal; otherwise, the ί/^ +Λ^ independent physical downlink shared channel transmits the corresponding correct/error response message of each codeword stream, and the bound correct/error response message is in the physical uplink shared channel feedback. .

 20. The multi-carrier system of claim 18, wherein

The terminal is configured to use the binding mode to feed back a correct/error response message on the physical uplink control channel: first, it is determined whether at least one downlink configuration information is lost, and if yes, the terminal does not send any correct/error response. Signal; otherwise an independent physical downlink shared letter The channel transmits the correct/error response message of each codeword stream to be bound, and the bound correct/error response message is fed back on the physical uplink control channel.

 21. The multi-carrier system of claim 18, wherein

 The terminal is configured to use a multiplexing mode to feed back a correct/error response message on the physical uplink shared channel in the following manner: first, according to the number of downlink component carriers in the downlink component carrier set or the determining the correct/error response message The number of feedback bits is used, and after the binding operation between the codeword streams is performed on the correct/error response message detected on each codeword stream, the binding value is mapped to the corresponding bit in the feedback bit number.

 22. The multi-carrier system of claim 18, wherein

 The terminal is configured to use a multiplexing mode to feed back a correct/error response message on the physical uplink control channel:

 First, the number of feedback bits of the correct/error response message is determined according to the number of downlink component carriers in the downlink component carrier set, and the correct/error response message detected on each codeword stream is subjected to a binding operation between codeword streams. Feedback bit number of bound correct/error response messages;

 Then select an available physical uplink control channel and use the format lb to send the correct binding.

/ error response message.