CN101989897B - Confirmation feedback method and terminal - Google Patents

Abstract

The invention discloses a confirmation information feedback method and a terminal. The method comprises: the terminal divides the confirmation information of the PDSCH corresponding to an uplink subframe into M groups of predetermined values; The acknowledgment information corresponding to each group is respectively mapped to a predetermined amount of feedback information, where the acknowledgment information includes an acknowledgment message ACK or a non-acknowledgment message NACK; the terminal feeds back the feedback information on an uplink subframe. Through the present invention, the efficiency of confirmation information feedback is improved.

Description

Confirmation information feedback method and terminal

technical field

The present invention relates to the communication field, in particular, to a confirmation information feedback method and a terminal.

Background technique

The radio frame (Radio Frame) in the Long Term Evolution (referred to as LTE) system includes frequency division duplex (Frequency Division Duplex, referred to as FDD) mode and time division duplex (Time Division Duplex, referred to as TDD) mode frame structure. Fig. 1 is a schematic diagram of the frame structure in the FDD system according to the related art. As shown in Fig. 1, in the frame structure of the FDD mode, a wireless frame of 10 milliseconds (ms) consists of twenty lengths of 0.5 ms, numbered 0- 19 time slots (slot), and the time slots 2i and 2i+1 form a subframe (subframe) i (wherein, 0≤i≤9) with a length of 1 ms. Fig. 2 is a schematic diagram of the frame structure in the TDD system according to the related technology. As shown in Fig. 2, in the frame structure of the TDD mode, a 10ms wireless frame is composed of two half frames (half frames) with a length of 5ms, and a half frame A frame includes five subframes with a length of 1 ms, and a subframe i is defined as a combination of two time slots 2i and 2i+1 with a length of 0.5 ms (wherein, 0≤i≤9).

In the above two frame structures, when the standard cyclic prefix (Normal Cyclic Prefix, referred to as Normal CP) is used, a time slot contains 7 symbols with a length of 66.7 microseconds (us), and the CP length of the first symbol is is 5.21us, and the CP length of the remaining 6 symbols is 4.69us; when using the Extended Cyclic Prefix (Extended CP for short), a time slot contains 6 symbols, and the CP length of each symbol is 16.67us .

The uplink and downlink configurations supported by each subframe are shown in Table 1. Among them, "D" indicates a subframe dedicated to downlink transmission, "U" indicates a subframe dedicated to uplink transmission, "S" indicates a subframe used for DwPTS (Downlink Pilot Time Slot, downlink pilot time slot), guard interval (Guard Period, referred to as GP) and UpPTS (Uplink PilotTime Slot, uplink pilot time slot) are special subframes of these three domains.

Table 1 Schematic diagram of uplink and downlink configurations supported by each subframe

As can be seen from the above table, LTE TDD supports uplink and downlink switching periods of 5ms and 10ms. If the period of the downlink to uplink transition point is 5ms, the special subframe will exist in two half frames; if the period of the downlink to uplink transition point is 10ms, the special subframe will only exist in the first half frame; subframe #0 and subframe Frame #5 and DwPTS are always used for downlink transmission; UpPTS and the subframe immediately following the special subframe are dedicated for uplink transmission.

In the LTE system, PDCCH (Physical Downlink Control Channel, physical downlink control channel) is used to carry downlink control information (Downlink Control Information, referred to as DCI), including: uplink and downlink scheduling information and uplink power control information. The format of DCI (DCI format) is divided into the following types: DCI format 0, DCI format 1, DCI format 1A, DCI format 1B, DCI format 1C, DCI format 1D, DCI format 2, DCI format2A, DCI format 3 and DCI format 3A wait. The physical resource for transmitting PDCCH is based on the control channel element (ControlChannel Element, referred to as CCE), and the size of a CCE is 9 resource element groups (ResourceElement Group, referred to as REG), that is, 36 resource elements (Resource Element), one PDCCH may occupy 1, 2, 4 or 8 CCEs.

In the FDD system of LTE, since the uplink and downlink subframes are in one-to-one correspondence, when the PDSCH (PhysicalDownlink Shared Channel, physical downlink shared channel) contains only one transport block, the UE needs to feed back a 1-bit ACK (Acknowledge, correct response )/NACK (Non-Acknowledge, error response) response information; when the PDSCH contains two transport blocks, the UE needs to feed back 2-bit ACK/NACK response information. However, in the TDD system, the uplink and downlink subframes are not in one-to-one correspondence, that is to say, the ACK/NACK response information corresponding to multiple downlink subframes needs to be in the PUCCH (Physical Uplink Control Channel, Physical Uplink Control Channel) of an uplink subframe Uplink transmission, wherein a set of multiple downlink subframes corresponding to one uplink subframe forms a "bundling window (binding window)".

Therefore, there are two methods for sending ACK/NACK response information in the TDD system: one is the bundling method, and the core idea of this method is to correspond to each downlink subframe transmission block that needs to be fed back in the uplink subframe The ACK/NACK response information is logically ANDed according to the codeword stream index. If at least one of the downlink subframes contains 2 transport blocks, the UE will feed back 2-bit ACK/NACK response information. If each subframe contains For one transmission block, the UE needs to feed back 1-bit ACK/NACK response information; the other is the channel selection (multiplexing with channel selection, referred to as multiplexing) method, the core idea of which is to use different PUCCH channels and different PUCCH channels on the channel. The modulation symbol is used to represent the different feedback states of the downlink subframe that needs to be fed back in the uplink subframe. If the downlink subframe contains multiple transport blocks, then the ACK/NACK response information that is fed back to the multiple transport blocks of the downlink subframe first Perform a logical AND (also called spatial bundling) operation before performing channel selection, and then use PUCCH format1b to send, and up to 4 bits of ACK/NACK information can be transmitted.

In order to meet the requirements of the advanced International Telecommunication Union-Advanced (ITU-Advanced), the Long Term Evolution Advanced (LTE-A) system, which is an evolution standard of LTE, needs to support a larger system bandwidth ( Up to 100MHz), and needs to be backward compatible with existing LTE standards. On the basis of the existing LTE system, a larger bandwidth can be obtained by combining the bandwidth of the LTE system, and this technology is called a carrier aggregation (Carrier Aggregation, CA for short) technology. This technology can improve the spectrum utilization rate of the IMT-Advance system, alleviate the shortage of spectrum resources, and optimize the utilization of spectrum resources. The LTE system bandwidth of the carrier aggregation can be regarded as a component carrier frequency (Component Carrier, referred to as spectrum for short), and each component carrier frequency can also be called a cell (Cell), that is to say, a frequency spectrum can be composed of n component carrier frequencies (Cell) aggregated. The resources of an R10 UE (User Equipment, user equipment) are composed of n cells (component carriers) in the frequency domain, wherein one cell is called the primary cell (Primary cell), and the remaining cells are called secondary cells (Secondary cell).

One uplink subframe corresponds to multiple downlink subframes, and there are multiple cells on each downlink subframe. Figure 3 is a schematic diagram of an uplink subframe corresponding to a downlink configuration window in a carrier aggregation scenario according to related technologies, as shown in Figure 3 . Each cell can be transmitted by one transmission block or by two transmission blocks according to different transmission modes. In the LTE-A system, the number of acknowledgment information (ACK/NACK) information that the UE needs to feed back will increase exponentially.

To sum up, in the related art, in the carrier aggregation scenario, the number of feedback acknowledgment information doubles, resulting in excessive signaling load and even affecting normal service transmission.

Contents of the invention

The main purpose of the present invention is to provide a confirmation information feedback method and a terminal, so as to at least solve the problem in the above-mentioned related art in the carrier aggregation scenario that the signaling load is too heavy or even normal service transmission is affected due to the doubled number of feedback confirmation information.

In order to achieve the above object, according to one aspect of the present invention, a confirmation information feedback method is provided.

According to the acknowledgment information feedback method of the present invention: the terminal divides the acknowledgment information of the physical downlink shared channel PDSCH corresponding to an uplink subframe into M groups of predetermined values; the terminal divides each of the M groups of predetermined values into corresponding groups according to the downlink allocation information DAI The acknowledgment information is mapped to a predetermined amount of feedback information respectively, where the acknowledgment information includes an acknowledgment message ACK or a non-acknowledgment message NACK; the terminal feeds back the feedback information on the uplink subframe.

In order to achieve the above purpose, according to another aspect of the present invention, a terminal is also provided.

The terminal according to the present invention includes: a division module, which is used to divide the confirmation information of the physical downlink shared channel PDSCH corresponding to an uplink subframe into M groups of predetermined values; The acknowledgment information corresponding to each group in the group is respectively mapped to a predetermined amount of feedback information, wherein the acknowledgment information includes an acknowledgment message (ACK) or a non-acknowledgment message (NACK); the feedback module is used to feed back the feedback information on the uplink subframe .

Through the present invention, the confirmation information of the PDSCH corresponding to an uplink subframe is divided into M groups of predetermined values by the terminal; and each group in the M groups of predetermined values is corresponding The acknowledgment information is mapped to a predetermined number of feedback information, and then the feedback information is fed back on the uplink subframe, which solves the problem of excessive signaling load and even influence in the carrier aggregation scenario in the related art due to the doubled number of feedback acknowledgment information The problem of normal business transmission can be solved, thereby improving the efficiency of confirming information feedback.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the present invention and constitute a part of the application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations to the present invention. In the attached picture:

FIG. 1 is a schematic diagram of a frame structure in an FDD system according to related technologies;

FIG. 2 is a schematic diagram of a frame structure in a TDD system according to related technologies;

FIG. 3 is a schematic diagram of a downlink configuration window corresponding to an uplink subframe in a carrier aggregation scenario according to the related art;

FIG. 4 is a flow chart of a method for feeding back confirmation information according to an embodiment of the present invention;

Fig. 5 is a schematic diagram 1 of DAI representing the total number according to an embodiment of the present invention;

FIG. 6 is a second schematic diagram of DAI representation according to an embodiment of the present invention;

FIG. 7 is a third schematic diagram of DAI representation according to an embodiment of the present invention;

FIG. 8 is a schematic diagram 4 of DAI representation according to an embodiment of the present invention; and

Fig. 9 is a structural block diagram of a terminal according to an embodiment of the present invention.

Detailed ways

Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

This embodiment provides a method for feeding back confirmation information. FIG. 4 is a flowchart of a method for feeding back confirmation information according to an embodiment of the present invention. As shown in FIG. 4 , the method includes:

Step S402: the terminal divides the acknowledgment information of the physical downlink shared channel PDSCH corresponding to one uplink subframe into predetermined M groups.

Step S404: according to the downlink allocation information DAI, the terminal maps the acknowledgment information corresponding to each of the predetermined value M groups into a predetermined amount of feedback information respectively, wherein the acknowledgment information includes an acknowledgment message (ACK) or a non-acknowledgment message (NACK);

Step S406: the terminal feeds back the feedback information on the uplink subframe.

Through the above steps, the terminal divides the acknowledgment information of the PDSCH corresponding to an uplink subframe into M groups with a predetermined value; and maps the acknowledgment information corresponding to each of the M groups with a predetermined value into a predetermined amount of feedback information according to the DAI, Then, the feedback information is fed back on the uplink subframe, which solves the problem in the related art that the number of feedback confirmation information is doubled due to the doubled increase in the number of feedback confirmation information in the related art, which leads to excessive signaling load and even affects normal business transmission, thereby achieving the improvement of confirmation information. The effect of feedback efficiency.

Preferably, a preferred implementation manner of step S402 will be described below. The terminal divides the acknowledgment information corresponding to the downlink subframe i corresponding to the uplink subframe into Hi groups; the predetermined group M and the Hi group corresponding to the downlink subframe satisfy the following relationship: Where P is the number of downlink subframes corresponding to the uplink subframe. Through this preferred embodiment, the terminal uses the sum of the groups of corresponding acknowledgment information in the downlink subframe as the groups divided by the acknowledgment information of the downlink subframe. This method is simple and easy, and improves the efficiency of grouping the acknowledgment information.

Preferably, another preferred implementation manner of step S402 will be described below. The terminal divides the confirmation information into M groups of predetermined values according to at least one of the following methods:

When P is 1 and Q is 3, M is 3, wherein the confirmation information corresponding to each serving cell configured by the terminal is a group;

When P is 1 and Q is 4, M is 4, wherein the confirmation information corresponding to each serving cell configured by the terminal is a group;

When P is 1 and Q is 5, M is 4, wherein the confirmation information corresponding to two secondary cells in the serving cell configured by the terminal is a group, and each serving cell in other serving cells except the secondary cell corresponds to The confirmation information is a group;

When P is 2 and Q is greater than or equal to 2, M is 4, wherein the confirmation information corresponding to each downlink subframe corresponding to the uplink subframe is divided into 2 groups, and the confirmation information corresponding to the primary cell in the downlink subframe is divided into one group , the confirmation information corresponding to the secondary cell is another group;

When P is 3 and Q is greater than or equal to 2, M is 4, where the confirmation information corresponding to one downlink subframe in the downlink subframe corresponding to the uplink subframe is divided into two groups, and the confirmation information corresponding to the primary cell in the downlink subframe is one group, the acknowledgment information corresponding to the secondary cell is another group, and the acknowledgment information corresponding to each subframe in the remaining downlink subframes is divided into 1 group;

When P is 4 and Q is greater than or equal to 2, M is 4, wherein the confirmation information corresponding to each downlink subframe of the PDSCH is divided into 1 group;

When P is 3 and Q is greater than or equal to 2, M is 3, wherein the confirmation information corresponding to each downlink subframe of PDSCH is 1 group;

Wherein, P is the number of downlink subframes corresponding to the uplink subframe, and Q is the number of serving cells configured by the terminal. Through this preferred embodiment, the terminal determines the grouping according to the number P of downlink subframes corresponding to the uplink subframe and the number Q of serving cells configured by the terminal, which improves the flexibility of grouping confirmation messages.

Preferably, after step S402, the method further includes: the terminal sorts the preset value M groups according to the index of the downlink subframe and the sequence of the primary cell and the secondary cell of the serving cell on the same downlink subframe. Through this preferred embodiment, the predetermined value M groups are sorted, which improves the orderliness of the grouping.

Preferably, the terminal sorting the predetermined value M groups according to the index of the downlink subframe and the order of the primary cell and the secondary cell of the serving cell on the same downlink subframe includes:

The terminal uses one of the following methods to sort the predetermined value M groups according to the index of the downlink subframe and the order of the primary cell and the secondary cell of the serving cell on the same downlink subframe:

The terminal arranges the predetermined value M groups according to the index of the downlink subframe in ascending order, and the groups on the same downlink subframe are sorted in the order of the primary cell and then the secondary cell;

The terminal arranges a predetermined value of M groups according to the index of the downlink subframe in ascending order, and the groups on the same downlink subframe are sorted in the order of the secondary cell first and then the primary cell. Through this preferred embodiment, the terminal sorts the packets in the above manner, which improves the flexibility of sorting.

Preferably, the above method further includes: the terminal divides the acknowledgment information of the PDSCH without the physical downlink control channel PDCCH into predetermined groups. Through this preferred embodiment, the acknowledgment information of PDSCH without PDCCH is divided into predetermined groups, which improves the rationality of grouping. It should be noted that the PDSCH without the PDCCH may be the SPS.

Preferably, dividing the acknowledgment information of the PDSCH without the PDCCH into predetermined groups includes: the terminal divides the acknowledgment information of the PDSCH without the PDCCH into one of the following predetermined groups:

The first downlink subframe in the first group, the second group, and the downlink subframe corresponding to the uplink subframe of the predetermined value M groups The first downlink subframe in the downlink subframe corresponding to the group and the uplink subframe corresponding to the primary cell The group corresponding to the secondary cell, and the group determined according to the location of the downlink subframe where the acknowledgment information is located and the location of the serving cell. Through this preferred embodiment, the acknowledgment information of PDSCH without PDCCH is divided into the above-mentioned predetermined group, which is convenient for searching and improves the rationality and flexibility of grouping.

Preferably, in the downlink subframe window corresponding to the uplink subframe, the DAI allocates the PDSCH to the terminal for the downlink subframe where it is located and all the downlink subframes before the downlink subframe where it is located and identifies the semi-persistent scheduling (SPS) release PDCCH The total number of , where PDSCH is one of the following: PDSCH with PDCCH; PDCCH with PDCCH and PDSCH without PDCCH.

Preferably, a preferred implementation manner of step S404 is described below. The terminal maps the acknowledgment information corresponding to each of the predetermined M groups into a predetermined number of feedback information respectively through a logical AND operation according to the DAI, wherein the predetermined number is 1. Through this preferred embodiment, a plurality of confirmation information is mapped into a predetermined amount of feedback information through logical AND operation, which reduces the information amount of confirmation information feedback and improves the efficiency of confirmation information feedback.

Preferably, another preferred implementation manner of step S404 will be described below. The terminal determines that the PDCCH is lost according to the DAI, and then maps the acknowledgment information corresponding to the group where the lost PDCCH belongs to a non-acknowledgment message as NACK or a non-continuous state DTX. Through this preferred embodiment, when the terminal determines that the PDCCH is lost according to the DAI, specific information is fed back, which improves the correctness and efficiency of confirmation information feedback.

Preferably, the method further includes: the terminal determines that there is no corresponding acknowledgment message in the predetermined value M groups, and maps the acknowledgment messages corresponding to the groups without corresponding acknowledgment messages to NACK or DTX. Through this preferred embodiment, when there is no corresponding confirmation information in the group, specific information is fed back, which improves the correctness and efficiency of confirmation information feedback.

Preferably, the above method further includes: when the PDCCH corresponding to the acknowledgment information corresponding to one of the predetermined M groups is located in the primary cell, the PUCCH resource corresponding to the group corresponding to the acknowledgment message that the corresponding PDCCH is located in the primary cell is based on the Control channel element CCE position mapping is obtained. Through this preferred embodiment, the efficiency and accuracy of obtaining confirmation information when the PDCCH corresponding to the corresponding confirmation information is located in the primary cell are improved.

Preferably, the above method further includes: when the PDCCH corresponding to the confirmation message corresponding to one of the predetermined M groups is not located in the primary cell, the corresponding PDCCH is not located in the PUCCH resource corresponding to the group corresponding to the confirmation message of the primary cell Obtain according to the PUCCH resource configured by the high layer; or obtain the PUCCH resource corresponding to the group corresponding to the acknowledgment message that the corresponding PDCCH is not located in the primary cell according to the PUCCH resource configured by the high layer and ACK/NACK resource indication signaling (ARI). Through this preferred embodiment, the efficiency and accuracy of obtaining confirmation information when none of the PDCCHs corresponding to the corresponding confirmation information is located in the primary cell are improved.

Preferably, the PUCCH resource is obtained through the CCE with the smallest index among the CCEs on the primary cell; or

The PUCCH resource is acquired by the CCE with the smallest index among the CCEs corresponding to the cell with the highest priority in the predefined order on the primary cell.

Preferably, the above method further includes: when the corresponding acknowledgment information in one of the predetermined value M groups is only the acknowledgment information of PDSCH without PDCCH, the PUCCH resource corresponding to the group where the acknowledgment message of PDSCH without PDCCH is located is passed through without PDCCH or obtain the PUCCH resource corresponding to the PUCCH resource corresponding to the PDSCH without PDCCH; or obtain the PUCCH resource corresponding to the group where the PDSCH acknowledgment message without PDCCH is obtained through the PUCCH resource configured by the high layer and the predefined ACK/NACK resource indication signaling (ARI). Through this preferred embodiment, the efficiency and accuracy of obtaining acknowledgment information when the corresponding acknowledgment information in one group is only the acknowledgment information of PDSCH without PDCCH is improved.

Preferably, another preferred implementation manner of step S402 will be described below. The number of serving cells of the terminal is 2, and when the number of downlink subframes corresponding to the uplink subframe is greater than K, it is determined that M is equal to 2, wherein the confirmation information corresponding to each serving cell is 1 group, and K is equal to 1 or 2. Through this preferred embodiment, grouping is performed according to the number of serving cells and downlink subframes, which improves the efficiency and accuracy of grouping.

Preferably, the following is a preferred implementation manner of step S404 (corresponding to yet another preferred implementation manner of the above-mentioned step S402). The terminal maps the acknowledgment information corresponding to each of the predetermined M groups into 2-bit feedback information according to the DAI. Through this preferred embodiment, the amount of feedback information is reduced, thereby improving feedback efficiency.

Preferably, the DAI is the total number of PDSCHs allocated to the terminal in the downlink subframe of the serving cell where it is located in the downlink subframe window corresponding to the uplink subframe and all downlink subframes before the downlink subframe and the PDCCH identified by the SPS release PDCCH, wherein, The PDSCH is one of the following: PDSCH with PDCCH and PDSCH without PDCCH.

Another preferred implementation manner of step S404 will be described below. The terminal sorts the confirmation information according to the value of DAI corresponding to the confirmation information from small to large, and the confirmation information without DAI is placed before the confirmation information with DAI, wherein the confirmation information is the confirmation information in each group of M groups with a predetermined value ; The terminal maps the number of consecutive ACKs starting from the first acknowledgment information in the sorted acknowledgment information to a predetermined number of feedback information, wherein, when the PDSCH corresponds to two acknowledgment information, after performing a logical AND operation on the two acknowledgment information Perform a sort operation. Through this preferred embodiment, the number of sorted consecutive ACKs is mapped to feedback information, reducing the amount of feedback information.

Preferably, the DAI is the number of PDSCHs allocated to the downlink subframe of the serving cell where the DAI is located and all downlink subframes before the downlink subframe. Another preferred implementation of step S404 will be described below. The terminal maps the acknowledgment information corresponding to each of the predetermined value M groups into a predetermined amount of feedback information according to the DAI in one of the following ways:

The terminal performs a spatial logical AND operation on the acknowledgment information of each group of the predetermined value M groups, and then maps the number of ACKs to a predetermined number of feedback information, wherein the spatial logical AND operation is that when one PDSCH corresponds to two confirmation information, Map two confirmation information into one confirmation information through logical AND operation;

The terminal obtains one acknowledgment information (1-bit feedback information) from all the acknowledgment information of each of the predetermined M groups through logical AND operation, and, when the feedback information is ACK, feeds back the PDSCH received by the terminal in the group quantity;

The terminal maps all the acknowledgment information of each group in the predetermined value M groups through logical AND operation to map the two acknowledgment information into one acknowledgment information, and, when the feedback information is ACK, feeds back the information received by the terminal in the group The count value corresponding to the last DAI.

Through this preferred embodiment, the feedback information is mapped in the above manner, which reduces the amount of feedback information.

Preferably, when the above M is 2, the feedback order of the two groups of feedback information is first the feedback information of the corresponding group of the primary cell and then the feedback information of the corresponding group of the secondary cell; or the order of the two groups of feedback information is first the feedback information of the corresponding group of the secondary cell and then The feedback information of the corresponding group of the primary cell.

Preferably, the above method further includes: the terminal determines that the PDCCH is lost according to the DAI value, and then determines that the acknowledgment message corresponding to the lost PDCCH is NACK or DTX. Through this preferred embodiment, the terminal determines PDCCH loss according to the DAI value, and feeds back specific information, which improves the accuracy and efficiency of the feedback information.

Preferably, the above method further includes: when there is no acknowledgment information feedback in the predetermined value M groups, the terminal determines that the acknowledgment information of the group without acknowledgment information feedback is NACK or DTX; or the terminal determines that the feedback ACK of the group without acknowledgment information feedback The quantity is 0. Through this preferred embodiment, the accuracy and efficiency of feedback information are improved.

Preferably, another preferred implementation of step S402 is described below: when the number of serving cells of the terminal is 2 and the number of downlink subframes corresponding to the PDSCH configuration window is 2, it is determined that M is equal to 4, wherein each The acknowledgment information corresponding to each serving cell of the downlink subframe is 1 group; corresponding to the above steps, the preferred implementation of step S404 is: the terminal performs a logical AND operation on the acknowledgment information corresponding to each of the predetermined M groups according to the DAI It is mapped to a confirmation message (1bit feedback message). Through this preferred embodiment, the amount of feedback information is reduced, and the feedback efficiency is improved.

Preferably, the two PUCCHs of the corresponding group of the primary cell are obtained by mapping the CCE position of the control channel element corresponding to the PDCCH where the DAI is equal to 1 in the corresponding group of the primary cell and the CCE position mapping of the control channel element where the PDCCH is located where the DAI is equal to 2, wherein, When only one acknowledgment information with DAI equal to 1 is included in the corresponding group of the primary cell, the PUCCH resource is the PUCCH resource obtained by mapping the control channel element CCE position corresponding to the PDCCH where the DAI is 1 and configured by the high layer. When there is no acknowledgment information in the corresponding group of the primary cell, The PUCCH resources are PUCCH resources configured by higher layers. Through this preferred embodiment, the correctness of confirmation messages on the two PUCCHs of the corresponding group of the primary cell is improved.

Preferably, the two PUCCHs of the group corresponding to the secondary cell are obtained according to the PUCCH resource and the ARI configured by the high layer, or the two PUCCHs of the group corresponding to the secondary cell are obtained according to the PUCCH resource configured by the high layer. Through this preferred embodiment, the correctness of the acknowledgment information on the two PUCCHs of the corresponding group of the secondary cell is improved.

Embodiment one

This embodiment provides a confirmation information feedback method. This embodiment combines the foregoing embodiments and preferred implementation manners therein. In this embodiment, the feedback method is a frequency-domain bundling manner, which will be described in detail below.

Frequency domain bundling method

Step 1: In the carrier aggregation scenario, the UE divides the PDSCH acknowledgment information into M groups.

Step 2: Each group is mapped into N pieces of information, and the information corresponding to each group is determined according to the DAI, and the UE sends (M×N) pieces of information.

Wherein, in a configuration window corresponding to an uplink subframe, the DAI includes the downlink subframe i where the DAI is located and the PDSCH allocated to the terminal in all downlink subframes before the downlink subframe i and the total number of PDCCHs released by the SPS, and the downlink subframe The DAI values corresponding to the PDSCH allocated on i are the same, wherein the PDSCH may refer only to the PDSCH with the PDCCH, or may refer to the PDSCH with the PDCCH and the PDSCH without the PDCCH.

Preferably, the above DAI information can be represented by 2-bit data, and its value is 00, 01, 10 or 11, which can be used to represent 1, 2, 3, 4 (or other values, as shown in Table 2, as long as the base station It is enough for the UE side to know the correspondence between the bit data and the corresponding value), of course, the correspondence between the bit value and the actual value can be changed arbitrarily, and the DAI information can be included in the downlink control information format (DCI Format) representing the downlink scheduling information transmission.

Table 2 DAI Value Schematic Table

DAI signaling meaning 00 1/5/9/13/17.... 10 2/6/10/14/18... 01 3/7/11/15/19... 11 4/8/12/16/20...

Preferably, in step 1, the following method can be used for grouping: the acknowledgment information corresponding to the downlink subframe i is divided into H _i groups, where the number of downlink subframes corresponding to the configuration window is P, and Each group of corresponding acknowledgment information is mapped into N pieces of information through logical AND, and N is 1. At this time, it is equivalent to the UE feeding back M bits through channel selection.

Preferably, the following method can be used for grouping in step 1: the number of serving cells configured by the UE is Q, and the specific grouping scheme is as follows:

When P is 1 and Q is 3, M is 3, and the confirmation information corresponding to each serving cell is a group;

When P is 1 and Q is 4, M is 4, and the confirmation information corresponding to each serving cell is a group;

When P is 1, Q is 5, M is 4, the confirmation information corresponding to the two secondary cells is a group, and the confirmation information corresponding to each serving cell in the remaining serving cells is a group;

When P is 2, Q is greater than or equal to 2, M is 4, and the confirmation information corresponding to each subframe is divided into two groups, the confirmation information corresponding to the primary cell in the downlink subframe is one group, and the confirmation information corresponding to the secondary cell is another group.

When P is 3, Q is greater than or equal to 2, M is 4, and the confirmation information corresponding to a downlink subframe is divided into two groups, the confirmation information corresponding to the primary cell in the downlink subframe is one group, and the confirmation information corresponding to the secondary cell is divided into two groups. is another group, and the acknowledgment information corresponding to each subframe in the remaining downlink subframes is divided into one group.

Preferably, the downlink subframe divided into two groups is the last subframe in the configuration window, or the first subframe; other subframes are not excluded.

When P is 4 and Q is greater than or equal to 2, M is 4, and the acknowledgment information corresponding to each downlink subframe is divided into 1 group.

The corresponding relationship between the number of serving cells Q, the number of downlink subframes P and the number of groups M configured by the UE above is shown in Table 3:

Table 3 The corresponding relationship between the number Q of serving cells configured by UE, the number P of downlink subframes, and the number M of groups

P=1 P=2 P=3 P=4 Q=2 M=4 M=4 M=4 Q=3 M=3 M=4 M=4 M=4 Q=4 M=4 M=4 M=4 M=4 Q=5 M=4 M=4 M=4 M=4

When P is 3 and Q is greater than or equal to 2, M can also be 3, and the confirmation information corresponding to each subframe can also be divided into 1 group; at this time, the UE configures the number of serving cells Q, the number of downlink subframes P and the number of groups M The corresponding relationship is shown in Table 4:

Table 4 The corresponding relationship between the number of UE configured serving cells Q and the number of downlink subframes P and the number of groups M

P=1 P=2 P=3 P=4 Q=2 M=4 M=3 M=4 Q=3 M=3 M=4 M=3 M=4 Q=4 M=4 M=4 M=3 M=4 Q=5 M=4 M=4 M=3 M=4

Each group is arranged according to the subframe index, and the groups on the same subframe are arranged according to the size of the serving cell index, and the corresponding information of each group is transmitted according to the order of the arranged groups.

Preferably, the above sequence is to arrange the groups in ascending order of the subframe index, and to arrange the groups on the same subframe in the order of the primary cell and then the secondary cell, or to arrange in the order of the subframe index from small to large For each group, the groups on the same subframe are arranged in the order of the secondary cell first and then the primary cell.

Preferably, the acknowledgment information for PDSCH without PDCCH is divided into fixed groups.

Among them, the groups divided by the acknowledgment information of PDSCH without PDCCH are: the first group, or, the second group, or, the group corresponding to the primary cell in the first downlink subframe in the configuration window, or, the first downlink subframe in the configuration window The group corresponding to the secondary cell of the subframe, or the corresponding group is determined according to the above rules.

Preferably, in step 2, the UE judges whether there is a PDCCH loss according to the received DAI value, and the mapping information for the group that may lose the PDCCH is NACK or DTX.

Preferably, when no acknowledgment information is fed back in a group, the mapping information corresponding to the group is NACK or DTX.

Preferably, when the PDCCH corresponding to the acknowledgment information included in a group is located in the primary cell, the PUCCH resource corresponding to the group is obtained according to the CCE position mapping where the PDCCH is located.

Preferably, the PUCCH resource is obtained through the CCE with the smallest index among the CCEs on the primary cell; or the PUCCH resource is obtained through the CCE with the smallest index among the CCEs corresponding to the cell with the highest priority in a predefined order on the primary cell.

When the PDCCHs corresponding to the acknowledgment information included in a group are not located in the primary cell, the PUCCH resources corresponding to the group are obtained according to the PUCCH resources configured by the high layer, or the PUCCH resources corresponding to the group are obtained according to the PUCCH resources configured by the high layer and A/N Resource indicator (A/N Resource indicator, ARI for short).

Preferably, when the corresponding acknowledgment information in a group is only the acknowledgment information of PDSCH without PDCCH, the PUCCH resource corresponding to the group is acquired through the PUCCH resource corresponding to PDSCH without PDCCH, or the PUCCH resource corresponding to the group is configured according to the high layer The PUCCH resource and the predefined ARI are obtained.

Embodiment two

This embodiment provides a confirmation information feedback method. This embodiment combines Embodiment 1 and its preferred implementation modes. In this embodiment, one uplink subframe corresponds to a configuration window of P downlink subframes, the number of serving cells configured by the UE is Q, and the downlink subframe i is configured with The number of transport blocks transmitted by the cell j is Z _i,j , where P can be 1, 2, 3, 4, 9, Q can be 1, 2, 3, 4, 5, and Z _{i, j} can be 1,2.

When P=4, Q=5, it is assumed that the base station has scheduled an uplink subframe corresponding to all PDSCHs in the configuration window. FIG. The DAI of the first downlink subframe is 00, indicating that its value is 5; the DAI of the second downlink subframe is 10, indicating that its value is 10; the DAI of the third downlink subframe is 01, indicating that its value is 15. The DAI of the fourth downlink subframe is 11, indicating that its value is 20.

When P is 4, M is 4, the acknowledgment information corresponding to each subframe is divided into 1 group, and the acknowledgment information corresponding to each group is mapped into 1 information through logical AND, and the information is ACK, NACK, DTX or ACK, NACK .

The UE judges the value corresponding to the received DAI according to the received DAI value and the received PDSCH number.

For example, if the UE detects 3 PDSCHs in the first downlink subframe, and detects a DAI of 00 in the first downlink subframe, then the value represented by the DAI must be 5, and cannot be 1 or 9 Wait for other values, because, as can be seen from Table 2, the value corresponding to 00 is 1/5/9/13/17, etc., and the UE has detected 3, then it cannot be 1, and a subframe can give at most The number of PDSCHs of the UE is 5, which cannot be greater than 5, so it is impossible to be 9 or other values greater than 5.

It can be seen from the above that according to the DAI on the first downlink subframe, the number of PDSCHs sent by the base station to the UE on the first downlink subframe is 5, but the UE only receives 3 PDSCHs, and 2 PDSCHs are lost. The mapping information corresponding to the first downlink subframe is NACK.

The UE detects 2 PDSCHs on the second downlink subframe, and detects a DAI of 10 on the second downlink subframe. Then, the value represented by the DAI must be 10, and it cannot be 6 or 14, etc. value, because, as can be seen from Table 2, the value corresponding to 10 is 2/6/10/14/18, etc., the UE already knows that the number of PDSCH sent on the first subframe is 5, and detects The number of received PDSCHs is 2, then the number of PDSCHs sent on the first two subframes must be greater than 5+2=7, so the DAI on the second downlink subframe cannot be 6, and the maximum number of DAIs on one subframe The number of PDSCHs for the UE is 5, and the two subframes cannot be greater than 10, so it is impossible to be 14 or other values greater than 10.

Similarly, according to the DAI on the second downlink subframe, it can be seen that the number of PDSCHs sent by the base station to the UE in the second downlink subframe is 5, but the UE only receives 2 PDSCHs, and 3 PDSCHs are lost , the mapping information corresponding to the second downlink subframe is NACK.

The UE detects 5 PDSCHs in the third downlink subframe, and the DAI detected in the third downlink subframe is 01. Then, the value represented by the DAI must be 15, because the UE already knows the first two subframes The number of PDSCHs transmitted on the frame is 10, and 5 PDSCHs are detected on the third downlink subframe, then the DAI value corresponding to the third subframe must be 15, and the received data is received on the third downlink subframe The number of PDSCHs is 5, and no PDSCH is lost, and the confirmation information of the 5 PDSCHs is logically ANDed and mapped into one information.

The logical AND operation means that when the confirmation information of all logical AND operations is ACK, the result of the logical AND operation is ACK, and as long as one of the confirmation information of all logical AND operations is NACK, the result of the logical AND operation is NACK.

Assuming that the corresponding acknowledgment messages on the third downlink subframe are all ACKs, then the information mapped to the third subframe is ACK.

The UE detects 5 PDSCHs in the fourth downlink subframe, and detects a DAI of 11 in the third downlink subframe. Then, the value represented by the DAI must be 20, because the UE already knows the first three subframes The number of PDSCHs transmitted on the frame is 15, and 5 PDSCHs are detected on the fourth downlink subframe, then the DAI value corresponding to the fourth subframe must be 20, and the received data is received on the third downlink subframe The number of PDSCHs is 5, and no PDSCH is lost, and the confirmation information of 5 PDSCHs is logically ANDed into one information;

Assuming that the acknowledgment information in the corresponding acknowledgment message on the fourth downlink subframe is NACK, then the information mapped to the fourth subframe is NACK;

The information sent by the UE is NACK, NACK, ACK, NACK; the information is sent through channel selection;

Implementation three

This embodiment provides a confirmation information feedback method. This embodiment combines Embodiment 1 and its preferred implementation modes. In this embodiment, one uplink subframe corresponds to a configuration window of P downlink subframes, the number of serving cells configured by the UE is Q, and the downlink subframe i is configured with The number of transport blocks transmitted by the cell j is Z _i,j , where P can be 1, 2, 3, 4, 9, Q can be 1, 2, 3, 4, 5, and Z _{i, j} can be 1,2.

It should be noted that, in this embodiment, DAI refers to the number of PDSCHs with and without PDCCHs.

When P=3, Q=5, it is assumed that the base station schedules two PDSCHs on the first downlink subframe in the configuration window corresponding to an uplink subframe, and one of them is the PDSCH of the SPS without PDCCH. Figure 6 is based on The second schematic diagram of the DAI representation of the embodiment of the present invention, as shown in Figure 6, the DAI of the corresponding first downlink subframe is 01, indicating that its value is 2, and three PDSCHs are scheduled on the second downlink subframe, and the first The DAI of the two downlink subframes is 00, indicating that the value is 5; three PDSCHs are scheduled on the third downlink subframe, and the DAI of the third downlink subframe is 11, indicating that the value is 8.

When P is 3, M is 4, the confirmation information corresponding to the last downlink subframe is divided into two groups, the confirmation information corresponding to the primary cell in the downlink subframe is one group, and the confirmation information corresponding to the secondary cell is another group , the acknowledgment information corresponding to each subframe in the remaining downlink subframes is divided into 1 group; the acknowledgment information corresponding to each group is mapped into 1 information through logical AND, and the information is ACK, NACK, DTX or ACK, NACK.

The UE judges the value corresponding to the received DAI according to the received DAI value and the received PDSCH number.

For example: UE does not detect PDSCH with PDCCH in the first downlink subframe, and receives a PDSCH of SPS without PDCCH, then UE does not receive DAI in the first downlink subframe, and does not know the first downlink The number of PDSCHs sent on the subframe, the UE detects 2 PDSCHs in the second downlink subframe, and the DAI detected in the second downlink subframe is 00, then the value represented by the DAI must be 5, not It may be other values such as 1 or 9, because, as can be seen from Table 2, the value corresponding to 00 is 1/5/9/13/17, etc., UE already knows that there is a PDSCH in the first subframe, and, in the second The number of PDSCHs detected on subframes is 2, then the number of PDSCHs sent on the first two subframes must be greater than 1+2=3, so the DAI on the second downlink subframe cannot be 1, and the UE will assume that The probability that 4 or more PDCCHs are lost is very small and will not occur. If DAI indicates 9, then it is equivalent to 4 PDCCHs being lost. Therefore, it is impossible to be 9 or other values greater than 9.

According to the DAI on the second downlink subframe, the UE knows that the number of PDSCHs sent by the base station to the UE in the first two downlink subframes is 5, but the UE only receives 3 PDSCHs, and 2 PDSCHs are lost. The PDSCH may occur in the first downlink subframe or in the second downlink subframe, then, the mapping information corresponding to the first downlink subframe is NACK, and the mapping information corresponding to the second downlink subframe is NACK.

The UE detects 3 PDSCHs on the third downlink subframe, and detects a DAI of 11 on the third downlink subframe. Then, the value represented by the DAI must be 8, because the UE already knows the first two subframes The number of PDSCHs transmitted on the frame is 5, and 3 PDSCHs are detected on the third downlink subframe, then the DAI value corresponding to the third subframe must be 8, and the received data is received on the third downlink subframe The number of PDSCHs is 3, no PDSCH is lost, the confirmation information corresponding to the primary cell is one group, the confirmation information corresponding to the secondary cell is another group, and the confirmation information corresponding to each subframe in the remaining downlink subframes is divided into one group; the 3 The acknowledgment information of a PDSCH is mapped into two pieces of information by grouping logical AND operation.

Assuming that the corresponding acknowledgment messages on the third downlink subframe are all ACK, then the information mapped to the third subframe is ACK, ACK.

The information sent by the UE is NACK, NACK, ACK, ACK; the information is sent through channel selection.

Implementation four

This embodiment provides a confirmation information feedback method. This embodiment combines the above-mentioned embodiments and the preferred implementation modes thereof. In this embodiment, one uplink subframe corresponds to a configuration window of P downlink subframes, the number of serving cells configured by the UE is Q, and the downlink subframe i is configured with The number of transport blocks transmitted by the cell j is Z _i,j , where P can be 1, 2, 3, 4, 9, Q can be 1, 2, 3, 4, 5, and Z _{i, j} can be 1,2.

It should be noted that, in this embodiment, the DAI has the number of PDSCHs of the PDCCH.

When P=3, Q=5, it is assumed that the base station schedules 3 PDSCHs on the first downlink subframe in the configuration window corresponding to an uplink subframe, wherein there is one PDSCH on the primary cell, and FIG. 7 is according to the present invention The third schematic diagram of the DAI representation of the embodiment, as shown in Figure 7, the DAI of the corresponding first downlink subframe is 10, indicating that its value is 3, and three PDSCHs are scheduled on the second downlink subframe, and the second The DAI of the downlink subframe is 01, indicating that its value is 6, and three PDSCHs are scheduled on the third downlink subframe, where the PDSCH of the primary cell is the PDSCH of the SPS without PDCCH, and the DAI of the third downlink subframe is 11, indicating that its value is 8 (excluding PDSCH without PDCCH).

When P is 3, M is 4, the confirmation information corresponding to the first downlink subframe is divided into two groups, the confirmation information corresponding to the primary cell in the downlink subframe is one group, and the confirmation information corresponding to the secondary cell is another group , the acknowledgment information corresponding to each subframe in the remaining downlink subframes is divided into 1 group; the acknowledgment information corresponding to each group is mapped into 1 information through logical AND, and the information is ACK, NACK, DTX or ACK, NACK;

The UE judges the value corresponding to the received DAI according to the received DAI value and the received PDSCH number.

As can be seen from the above: UE detects 3 PDSCHs with PDCCH in the first downlink subframe, and the DAI detected in the first downlink subframe is 10, then the value represented by the DAI must be 3, corresponding to the primary cell The acknowledgment information corresponding to the secondary cell is ACK, and the acknowledgment information corresponding to the secondary cell is ACK and NACK. Then, the mapping information of the two groups corresponding to the first downlink subframe is ACK and NACK respectively.

In the second downlink subframe, the UE detects that there are 3 PDSCHs with PDCCH, and the detected DAI is 01. Then, the value represented by the DAI must be 6, and the corresponding confirmation information is ACK, ACK and ACK, then, The mapping information of the group corresponding to the second downlink subframe is ACK.

The UE only receives a PDSCH without a PDCCH in the third downlink subframe, and the confirmation information corresponding to the PDSCH is NACK, which is divided into a group with the confirmation information of the first group for logical AND operation.

According to the above description, according to the order of subframes from low to high, each group is arranged in the order of the primary cell and then the secondary cell on a subframe, and the information corresponding to the first group is ACK, then, it is mapped with the PDSCH without PDCCH After that, the information corresponding to the first group is NACK.

If the UE does not receive the PDSCH with the PDCCH in the third downlink subframe, then the mapping information of the group corresponding to the third downlink subframe is NACK.

The information sent by the UE is NACK, NACK, ACK, NACK; the information is sent through channel selection.

Implementation five

This embodiment provides a confirmation information feedback method. This embodiment combines the foregoing embodiments and preferred implementation manners thereof. In this embodiment, the feedback method is a time-domain bundling manner, which will be described in detail below.

Step 1: In the carrier aggregation scenario, the UE divides the PDSCH acknowledgment information into M groups.

Step 2: Each group is mapped into N pieces of information; the corresponding information of each group is determined according to the DAI, and the UE sends (M×N) pieces of information;

Among them, DAI is expressed as the total number of PDSCHs allocated to the terminal in the downlink subframe of the serving cell and all downlink subframes before the subframe in the downlink subframe window corresponding to an uplink subframe, and the total number of PDCCHs released by the SPS, wherein, The PDSCH may refer only to the PDSCH with the PDCCH, or may refer to the PDSCH with the PDCCH and the PDSCH without the PDCCH.

Preferably, the DAI information can be represented by 2-bit data, and its value is 00, 01, 10 or 11, which can be used to represent 1, 2, 3, 4 (or other values, as shown in Table 3, as long as the base station and The UE side only needs to know the corresponding relationship between the bit data and the corresponding value), of course, the corresponding relationship between the bit value and the actual value can be changed arbitrarily, and the DAI information can be transmitted in the downlink control information format (DCI Format) representing the downlink scheduling information .

Table 5 DAI Value Schematic Table

DAI signaling meaning 00 1/5/9.... 10 2/6/... 01 3/7/... 11 4/8/...

Preferably, the number of serving cells configured by the UE is 2, and when the number of corresponding downlink subframes in the configuration window is greater than K, M is 2, and the confirmation information corresponding to each serving cell is divided into 1 group, and each group is mapped to N-bit information, where K can be 1 or 2, and N is 2.

The various mapping methods in step 2 will be described in detail below.

(1) Mapping method one

According to the DAI value corresponding to the confirmation information, the confirmation information in a group is arranged from small to large, and the confirmation information without DAI in the group is located in front of the confirmation information with DAI in the group, and the N-bit information indicates that the information from the confirmation information The number of consecutive ACKs starting from the first acknowledgment information in the array, where, when one PDSCH corresponds to two acknowledgments, sort them from small to large according to the code substream index, or perform a logical AND operation on one PDSCH corresponding to two acknowledgments As a confirmation message, the result of the logical AND operation is sorted as confirmation information.

N pieces of information can be represented by 2-bit data, and its value is 00, 01, 10 or 11, which can be used to represent 1, 2, 3, 4 (or other values, as shown in Table 4, as long as the base station and UE side It only needs to know the corresponding relationship between the bit data and the corresponding value), of course, the corresponding relationship between the bit value and the actual value can be changed arbitrarily.

Table 6N Information Meaning Table 1

When no acknowledgment information is fed back in a group, the number of ACKs fed back is 0.

(2) Mapping method two

The N-bit information indicates the number of ACKs in the confirmation information after the spatial logical AND operation in a group, wherein the spatial logical AND operation is to map the two confirmation information through the logical AND operation when one PDSCH corresponds to two confirmation information as a confirmation message.

N pieces of information can be represented by 2-bit data, and its value is 00, 01, 10 or 11, which can be used to represent 1, 2, 3, 4 (or other values, as shown in Table 5, as long as the base station and UE side It only needs to know the corresponding relationship between the bit data and the corresponding value), of course, the corresponding relationship between the bit value and the actual value can be changed arbitrarily.

Table 7 N information meaning table 2

When no acknowledgment information is fed back in a group, the number of ACKs fed back is 0.

(3) Mapping method three

All acknowledgment information in a group is mapped into one piece of information through logical AND operation, the N-bit information represents the information, and when the information is ACK, the number of PDSCHs received by the UE in the group is fed back.

N pieces of information can be represented by 2-bit data, and its value is 00, 01, 10 or 11, which can be used to represent 1, 2, 3, 4 (or other values, as shown in Table 6, as long as the base station and UE side It only needs to know the corresponding relationship between the bit data and the corresponding value), of course, the corresponding relationship between the bit value and the actual value can be changed arbitrarily.

Table 8 N information meanings Table 3

When there is no confirmation information feedback in a group, the default is NACK or DTX;

(4) Mapping method four

Map all acknowledgment information in a group to 1 information through logical AND operation, the N-bit information represents the information, and when the information is ACK, feed back the count value corresponding to the last DAI received by the UE in the group .

The order of the two sets of feedback information is first the feedback information of the corresponding group of the primary cell and then the feedback information of the corresponding group of the secondary cell; or the order of the two sets of feedback information is first the feedback information of the corresponding group of the secondary cell and then the feedback information of the corresponding group of the primary cell.

N pieces of information can be represented by 2-bit data, and its value is 00, 01, 10 or 11, which can be used to represent 1, 2, 3, 4 (or other values, as shown in Table 7, as long as the base station and UE side It only needs to know the corresponding relationship between the bit data and the corresponding value), of course, the corresponding relationship between the bit value and the actual value can be changed arbitrarily.

Table 9 N information meanings Schematic Table 4

When there is no confirmation information feedback in a group, the default is NACK or DTX;

In addition, when K is 2, the number of serving cells configured by the UE is 2, the number of corresponding downlink subframes in the configuration window is 2, M is 4, and the confirmation information corresponding to each serving cell in each subframe is divided into 1 group, each group is mapped to 1-bit information in a logical AND manner; the UE judges whether there is a PDCCH loss according to the received DAI value, and the confirmation information corresponding to the DAI of the lost PDCCH is NACK or DTX.

Embodiment six

This embodiment provides a confirmation information feedback method. This embodiment combines Embodiment 5 and the preferred implementation modes therein. In this implementation, one uplink subframe corresponds to a configuration window of P downlink subframes, and the service configured by the UE The number of cells is Q, and the number of transport blocks transmitted by cell j configured on downlink subframe i is Z _{i, j} , where P can be 1, 2, 3, 4, 9, and Q can be 1, 2, 3, 4, 5 , Z _{i, j} can be 1, 2.

Wherein, DAI only refers to the number of PDSCHs with PDCCHs.

When P=4, Q=2, it is assumed that the base station schedules 3 PDSCHs on the primary cell in the configuration window corresponding to an uplink subframe, which are located in the first downlink subframe, the second downlink subframe and the third PDSCH respectively. Downlink subframe, wherein, the PDSCH of the second downlink subframe is a PDSCH without PDCCH; there are 4 PDSCHs scheduled on the secondary cell, which are respectively located in the first to fourth downlink subframes. FIG. 8 is according to the embodiment of the present invention The schematic diagram 4 of the DAI representation, and the corresponding DAI values are shown in Figure 8.

The UE receives the PDSCH of the first subframe, the second subframe and the third subframe on the main cell, and the corresponding confirmation information is ACK, NACK, (ACK, NACK), according to the received DAI value 1, 2, It can be seen that no PDSCH is lost; among them, the acknowledgment information corresponding to the PDSCH without PDCCH is the second acknowledgment information NACK;

Arrange the subframes in ascending order. When a PDSCH corresponds to two acknowledgments, sort them according to the code substream index from small to large. At this time, the order of the acknowledgment information of the primary cell is NACK, ACK, (ACK, NACK) ;

In this embodiment, the mapping is performed in the following ways:

(1) Mapping method one

According to the mapping method in Table 6, the N pieces of information mapped by the primary cell group are 0, and the corresponding bit is 00;

The UE receives the PDSCH of the first subframe, the third subframe and the fourth subframe on the secondary cell, and the corresponding confirmation information is ACK, (ACK, NACK), NACK, according to the received DAI value 1, 3, 4. It can be seen that the PDSCH of the second subframe is lost; then, the confirmation information corresponding to the second subframe is NACK;

The subframes are arranged in ascending order. When a PDSCH corresponds to two acknowledgments, they are sorted from small to large according to the code substream index. At this time, the order of acknowledgment information of the secondary cell is ACK, NACK, (ACK, NACK) , NACK;

According to the mapping method in Table 6, the N pieces of information mapped by the secondary cell group are 1, and the corresponding bit is 01;

The information sent by the UE is 0, 0, 0, 1; the information is sent through channel selection;

0 can also be regarded as NACK, 1 can also be regarded as ACK, then, the information sent by the UE is NACK, NACK, NACK, ACK; the information is sent through channel selection; (0 can also be regarded as ACK, 1 can also be regarded as for NACK,)

(2) Mapping method two

The UE receives the PDSCH of the first subframe, the second subframe and the third subframe on the main cell, and the corresponding confirmation information is ACK, NACK, (ACK, NACK), according to the received DAI value 1, 2, It can be seen that no PDSCH is lost; among them, the confirmation information corresponding to the PDSCH without PDCCH is the second confirmation information NACK;

According to the mapping method in Table 7, the acknowledgment information corresponding to the primary cell group is ACK, NACK, and NACK. Among them, the two acknowledgment information corresponding to the PDSCH on the third downlink subframe are NACK after the spatial logical AND operation, and the primary cell group mapping The corresponding bits of the N pieces of information are 01.

The UE receives the PDSCH of the first subframe, the third subframe and the fourth subframe on the secondary cell, and the corresponding confirmation information is ACK, (ACK, NACK), NACK, according to the received DAI value 1, 3, 4. It can be seen that the PDSCH of the second subframe is lost; then, the confirmation information corresponding to the second subframe is NACK;

According to the mapping method in Table 7, the acknowledgment information corresponding to the secondary cell group is ACK, NACK, NACK, and NACK. Among them, the two acknowledgment information corresponding to the PDSCH on the third downlink subframe are NACK after spatial logical AND operation. The corresponding bits of the N pieces of information in the group mapping are 01.

The information sent by the UE is 0, 1, 0, 1; the information is sent through channel selection.

It should be noted that 0 can also be regarded as NACK, and 1 can also be regarded as ACK, then, the information sent by the UE is NACK, ACK, NACK, ACK; the information is sent through channel selection; (0 can also be regarded as ACK , 1 can also be regarded as NACK,)

(3) Mapping method three

The UE receives the PDSCH of the first subframe, the second subframe and the third subframe on the primary cell, and the corresponding confirmation information is ACK, ACK, (ACK, ACK). According to the received DAI value 1, 2, 3. It can be seen that no PDSCH is lost.

According to the mapping method in Table 8, the acknowledgment information corresponding to the primary cell group is ACK, ACK, (ACK, ACK), and the logical AND operation is performed on all the acknowledgment information in the group, and the result is ACK, and the N pieces of information mapped by the primary cell group are ACK , and feedback that the number of PDSCHs with PDCCHs received by the UE in the primary cell group is 3, and the corresponding bit is 11.

The UE receives the PDSCH of the first subframe, the third subframe and the fourth subframe on the secondary cell, and the corresponding confirmation information is ACK, (ACK, NACK), NACK, according to the received DAI value 1, 3, 4. It can be seen that the PDSCH of the second subframe is lost (equivalent to PDCCH loss); then, the confirmation information corresponding to the second subframe is NACK;

According to the mapping method in Table 8, if there is PDCCH loss in the secondary cell group, the N pieces of information mapped by the secondary cell group are NACK, and the corresponding bit is 00.

The information sent by the UE is 1, 1, 0, 0; the information is sent through channel selection.

It should be noted that 0 can also be regarded as NACK, and 1 can also be regarded as ACK, then the information sent by the UE is ACK, ACK, NACK, NACK; the information is sent through channel selection; (0 can also be regarded as ACK , 1 can also be regarded as NACK).

(4) Mapping method four

The UE receives the PDSCH of the first subframe and the third subframe on the primary cell, and the corresponding confirmation information is ACK, (ACK, ACK). According to the received DAI values of 1 and 2, no PDSCH is lost.

According to the mapping method in Table 7, the acknowledgment information corresponding to the primary cell group is ACK, (ACK, ACK), and the logical AND operation is performed on all the acknowledgment information in the group, the result is ACK, and the N pieces of information mapped by the primary cell group are ACK, and Feedback the last DAI value 2 received by the UE in the primary cell group, and the corresponding bit is 10.

The UE receives the PDSCH of the first subframe, the third subframe and the fourth subframe on the secondary cell, and the corresponding confirmation information is ACK, (ACK, NACK), NACK, according to the received DAI value 1, 3, 4. It can be seen that the PDSCH of the second subframe is lost (equivalent to the loss of the PDCCH); then, the acknowledgment information corresponding to the second subframe is NACK.

According to the mapping method in Table 9, if there is PDCCH loss in the secondary cell group, the N pieces of information mapped by the secondary cell group are NACK, and the corresponding bit is 00.

The information sent by the UE is 1, 0, 0, 0; the information is sent through channel selection.

It should be noted that 0 can also be regarded as NACK, and 1 can also be regarded as ACK, then, the information sent by the UE is ACK, NACK, NACK, NACK; the information is sent through channel selection; (0 can also be regarded as ACK , 1 can also be regarded as NACK).

Preferably, the two PUCCHs of the corresponding group of the primary cell are obtained by mapping the CCE position of the control channel element corresponding to the PDCCH where the DAI is equal to 1 in the corresponding group of the primary cell and the CCE position mapping of the control channel element where the PDCCH is located where the DAI is equal to 2, wherein, When only one acknowledgment information with DAI equal to 1 is included in the corresponding group of the primary cell, the PUCCH resource is the PUCCH resource obtained by mapping the control channel element CCE position corresponding to the PDCCH where the DAI is 1 and configured by the high layer. When there is no acknowledgment information in the corresponding group of the primary cell, The PUCCH resource is a PUCCH resource configured by a higher layer;

Preferably, the two PUCCHs of the group corresponding to the secondary cell are obtained according to the PUCCH resource and the ACK/NACK resource indication signaling ARI configured by the high layer, or the two PUCCHs of the group corresponding to the secondary cell are obtained according to the PUCCH resource configured by the high layer.

This embodiment provides a terminal. FIG. 9 is a structural block diagram of a terminal according to an embodiment of the present invention. As shown in FIG. 9, the terminal includes: a division module 92, a mapping module 94, and a feedback module 96. The above structure is described below Describe in detail.

The division module 92 is used to divide the acknowledgment information of the physical downlink shared channel PDSCH corresponding to an uplink subframe into M groups of predetermined values; the mapping module 94 is connected to the division module 92 and is used to divide the division module 92 according to the downlink allocation information DAI The acknowledgment information corresponding to each group in the divided predetermined value M groups is respectively mapped to a predetermined amount of feedback information, wherein the acknowledgment information includes an acknowledgment message (ACK) or a non-acknowledgment message (NACK); the feedback module 96 is connected to the mapping module 94 , for feeding back the feedback information mapped by the mapping module 94 on the uplink subframe.

Preferably, the dividing module 92 is used to divide the acknowledgment information corresponding to the downlink subframe i corresponding to the uplink subframe into Hi groups, and the predetermined group M and the Hi group corresponding to the downlink subframe i satisfy the following relationship: Where P is the number of downlink subframes corresponding to the uplink subframe.

The division module 92 includes: a first division submodule, configured to divide the confirmation information into M groups of predetermined values according to at least one of the following methods:

When P is 1 and Q is 3, M is 3, wherein the confirmation information corresponding to each serving cell configured by the terminal is a group;

When P is 1 and Q is 4, M is 4, wherein the confirmation information corresponding to each serving cell configured by the terminal is a group;

When P is 1 and Q is 5, M is 4, wherein the confirmation information corresponding to two secondary cells in the serving cell configured by the terminal is a group, and each serving cell in other serving cells except the secondary cell corresponds to The confirmation information is a group;

When P is 2 and Q is greater than or equal to 2, M is 4, wherein the confirmation information corresponding to each downlink subframe corresponding to the uplink subframe is divided into 2 groups, and the confirmation information corresponding to the primary cell in the downlink subframe is divided into one group , the confirmation information corresponding to the secondary cell is another group;

When P is 3 and Q is greater than or equal to 2, M is 4, where the confirmation information corresponding to one downlink subframe in the downlink subframe corresponding to the uplink subframe is divided into two groups, and the confirmation information corresponding to the primary cell in the downlink subframe is one group, the acknowledgment information corresponding to the secondary cell is another group, and the acknowledgment information corresponding to each subframe in the remaining downlink subframes is divided into 1 group;

When P is 4 and Q is greater than or equal to 2, M is 4, wherein the confirmation information corresponding to each downlink subframe of the PDSCH is divided into 1 group;

When P is 3 and Q is greater than or equal to 2, M is 3, where the confirmation information corresponding to each downlink subframe of PDSCH is 1 group; where P is the number of downlink subframes corresponding to the uplink subframe, and Q is The number of serving cells configured by the terminal.

Preferably, the terminal further includes: a sorting module, configured to sort according to the index of the downlink subframe and the index of the serving cell on the same downlink subframe.

Preferably, the sorting module is used to sort the predetermined value M groups according to the index of the downlink subframe and the order of the primary cell and the secondary cell of the serving cell on the same downlink subframe in one of the following ways: according to the index of the downlink subframe from the smallest Arrange M groups of predetermined value in the order from largest to largest, and the groups on the same downlink subframe are sorted in the order of the primary cell first and then the secondary cell; Groups on subframes are sorted in the order of the secondary cell first and then the primary cell.

Preferably, the above-mentioned terminal further includes: a predetermined division module, configured to divide the confirmation information of the PDSCH without the physical downlink control channel PDCCH into predetermined groups.

Preferably, the predetermined dividing module is used to divide the acknowledgment information of PDSCH without PDCCH into one of the following predetermined groups: the first group, the second group, and the downlink subframe corresponding to the uplink subframe of the predetermined value M groups The group corresponding to the primary cell in the first downlink subframe, the group corresponding to the secondary cell in the first downlink subframe in the downlink subframe corresponding to the uplink subframe, the location of the downlink subframe according to the confirmation information, and the location of the serving cell identified group.

Preferably, in the downlink subframe window corresponding to the uplink subframe, the DAI allocates the PDSCH to the terminal for the downlink subframe where it is located and all the downlink subframes before the downlink subframe where it is located, and the PDSCH that identifies the semi-persistent scheduling SPS release PDCCH , where the PDSCH is one of the following: PDSCH with PDCCH; PDSCH with PDCCH and PDSCH without PDCCH.

Preferably, the mapping module 94 includes: a logical AND sub-module, configured to map the confirmation information corresponding to each of the predetermined value M groups into a predetermined number of feedback information through a logical AND operation according to the DAI, wherein the predetermined number is 1 .

The mapping module 94 also includes: a determination submodule and a feedback submodule, wherein: the determination submodule is used to determine that the PDCCH is lost according to the DAI; the feedback submodule is connected to the determination submodule, and is used to determine the loss of the PDCCH by the determination submodule The acknowledgment information corresponding to the group it belongs to is mapped to a non-acknowledgment message (NACK) or a discontinuous state (DTX).

The above-mentioned terminal also includes: a message confirmation module and a message mapping module, wherein the message confirmation module is used to determine that there is no corresponding confirmation message in the predetermined value M groups; the message mapping module is used to confirm that there is no corresponding confirmation message in the message confirmation module The acknowledgment message corresponding to the group is mapped to NACK or DTX.

Preferably, when the PDCCH corresponding to the acknowledgment information corresponding to one of the predetermined M groups is located in the primary cell, the corresponding PDCCH is located in the primary cell. The mapping is obtained. Wherein, the PUCCH resource is obtained through the CCE with the smallest index among the CCEs on the primary cell; or the PUCCH resource is obtained through the CCE with the smallest index among the CCEs corresponding to the cell with the highest priority in the predetermined order on the primary cell.

Preferably, when the PDCCH corresponding to the confirmation message in one of the predetermined M groups is not located in the primary cell, the corresponding PDCCH is not located in the primary cell. The PUCCH resource corresponding to the group corresponding to the confirmation message is configured according to the PUCCH Resource acquisition; or the corresponding PDCCH is not located in the primary cell The PUCCH resource corresponding to the group corresponding to the confirmation message is obtained according to the PUCCH resource configured by the higher layer and the ACK/NACK resource indication signaling ARI.

Preferably, when the acknowledgment information corresponding to one of the predetermined M groups is the acknowledgment information of PDSCH without PDCCH, the PUCCH resource corresponding to the group where the acknowledgment message of PDSCH without PDCCH is located passes through the PUCCH resource corresponding to PDSCH without PDCCH Obtain; or obtain the PUCCH resource corresponding to the group where the PDSCH acknowledgment message without PDCCH is located through the PUCCH resource configured by the higher layer and the predefined ACK/NACK resource indication signaling ARI.

Preferably, the division module 92 includes: a second division submodule, configured to determine that M is equal to 2 when the number of serving cells of the terminal where the terminal is located is 2 and the number of downlink subframes corresponding to the uplink subframe is greater than K, wherein each The confirmation information corresponding to each serving cell is one group, and K is equal to 1 or 2. The mapping module 94 also includes: an information mapping submodule, connected to the second division submodule, for mapping the confirmation information corresponding to each group in the predetermined value M groups divided by the second division submodule into 2-bit feedback according to the DAI information.

Preferably, the mapping module 94 is also used to sort the confirmation information according to the value of DAI corresponding to the confirmation information from small to large, and the confirmation information without DAI is located in front of the confirmation information with DAI, wherein the confirmation information is M groups of predetermined values The acknowledgment information in each group of the acknowledgment information; the number of continuous ACKs starting from the first acknowledgment information in the sorted acknowledgment information is mapped to a predetermined number of feedback information, wherein, when the PDSCH corresponds to two acknowledgment information, the two After the confirmation information is logically ANDed, the sorting operation is performed.

Preferably, the mapping module 94 further includes: a mapping submodule, which is used to map the confirmation information corresponding to each group of the predetermined value M groups into a predetermined amount of feedback information according to the DAI in one of the following ways:

The terminal performs a spatial logical AND operation on the acknowledgment information of each group of the predetermined value M groups, and then maps the number of ACKs to a predetermined number of feedback information, wherein the spatial logical AND operation is that when one PDSCH corresponds to two confirmation information, Map two confirmation information into one confirmation information through logical AND operation;

The terminal obtains one acknowledgment information (1-bit feedback information) from all the acknowledgment information of each of the predetermined M groups through logical AND operation, and, when the feedback information is ACK, feeds back the PDSCH received by the terminal in the group quantity;

The terminal maps all the acknowledgment information of each group in the predetermined value M groups through logical AND operation to map the two acknowledgment information into one acknowledgment information, and, when the feedback information is ACK, feeds back the information received by the terminal in the group The count value corresponding to the last DAI.

Preferably, the order of the two sets of feedback information is first the feedback information of the corresponding group of the primary cell and then the feedback information of the corresponding group of the secondary cell; or the order of the two sets of feedback information is the feedback information of the corresponding group of the secondary cell first and then the feedback information of the corresponding group of the primary cell information.

Preferably, the division module 92 is also used to determine that M is equal to 4 when the number of serving cells of the terminal where it is located is 2 and the number of downlink subframes corresponding to the PDSCH configuration window is 2, wherein each downlink subframe of each The acknowledgment information corresponding to each serving cell is 1 group; the mapping module 94 is also used to map the acknowledgment information corresponding to each of the M groups of predetermined values into one acknowledgment information through logical AND operation according to DAI at the terminal where it is located.

It should be noted that the terminal described in the device embodiment corresponds to the above-mentioned method embodiment, and its specific implementation process has been described in detail in the method embodiment, and will not be repeated here.

To sum up, according to the above embodiments of the present invention, a confirmation information feedback method and a terminal are provided. The terminal divides the acknowledgment information of the PDSCH corresponding to an uplink subframe into M groups of predetermined value; and maps the acknowledgment information corresponding to each of the M groups of predetermined value into a predetermined amount of feedback information according to the DAI, and then feeds back The information is fed back on the uplink subframe, which solves the problem in related technologies that the number of feedback acknowledgment information doubles and causes excessive signaling load or even affects normal business transmission in the carrier aggregation scenario, thereby achieving the goal of improving the efficiency of acknowledgment information feedback Effect.

Obviously, those skilled in the art should understand that each module or each step of the above-mentioned present invention can be realized by a general-purpose computing device, and they can be concentrated on a single computing device, or distributed in a network formed by multiple computing devices Alternatively, they may be implemented in program code executable by a computing device so that they may be stored in a storage device to be executed by a computing device, and in some cases in an order different from that shown here The steps shown or described are carried out, or they are separately fabricated into individual integrated circuit modules, or multiple modules or steps among them are fabricated into a single integrated circuit module for implementation. As such, the present invention is not limited to any specific combination of hardware and software.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (23)

1. A feedback method for confirming information, comprising: The terminal divides the confirmation information of the physical downlink shared channel PDSCH corresponding to an uplink subframe into M groups of predetermined values; The terminal maps the acknowledgment information corresponding to each of the predetermined value M groups to a predetermined amount of feedback information according to the downlink allocation information DAI, wherein the acknowledgment information includes an acknowledgment message ACK or a non-acknowledgment message NACK; The terminal feeds back the feedback information on the uplink subframe; Wherein, the terminal divides the acknowledgment information of the physical downlink shared channel PDSCH corresponding to an uplink subframe into M groups of predetermined values, including: The terminal divides the confirmation information into M groups of predetermined values according to at least one of the following methods: When P is 1 and Q is 3, M is 3, wherein the confirmation information corresponding to each serving cell configured by the terminal is a group; When P is 1 and Q is 4, M is 4, wherein the confirmation information corresponding to each serving cell configured by the terminal is a group; When P is 1 and Q is 5, M is 4, wherein the confirmation information corresponding to two secondary cells in the serving cell configured by the terminal is a set, and each of the other serving cells except the secondary cell The confirmation information corresponding to each serving cell is a group; When P is 2 and Q is greater than or equal to 2, M is 4, wherein, the acknowledgment information corresponding to each downlink subframe corresponding to the uplink subframe is divided into 2 groups, and the acknowledgment information corresponding to the primary cell in the downlink subframe The information is one group, and the confirmation information corresponding to the secondary cell is another group; When P is 3 and Q is greater than or equal to 2, M is 4, wherein the acknowledgment information corresponding to one downlink subframe in the downlink subframe corresponding to the uplink subframe is divided into two groups, and in the downlink subframe The confirmation information corresponding to the primary cell is one group, the confirmation information corresponding to the secondary cell is another group, and the confirmation information corresponding to each downlink subframe in the remaining downlink subframes is divided into one group; When P is 4 and Q is greater than or equal to 2, M is 4, wherein the acknowledgment information corresponding to each downlink subframe of the PDSCH is divided into 1 group; When P is 3 and Q is greater than or equal to 2, M is 3, wherein the confirmation information corresponding to each downlink subframe of the PDSCH is 1 group; Wherein, P is the number of downlink subframes corresponding to the uplink subframe, and Q is the number of serving cells configured by the terminal; Wherein, the terminal divides the acknowledgment information of the PDSCH into M groups of predetermined values and further includes: The number of serving cells of the terminal is 2, and when the number of downlink subframes corresponding to the uplink subframe is greater than K, it is determined that M is equal to 2, wherein the confirmation information corresponding to each serving cell is 1 group, and K is equal to 1 or 2; The terminal divides the acknowledgment information of the PDSCH without a physical downlink control channel PDCCH into a predetermined group; Wherein, the dividing the acknowledgment information of the PDSCH without PDCCH into a predetermined group includes: The terminal divides the acknowledgment information of the PDSCH without PDCCH into one of the following predetermined groups: The first group, the second group, the first downlink subframe corresponding to the primary cell in the downlink subframe corresponding to the uplink subframe, and the downlink subframe corresponding to the uplink subframe The group corresponding to the secondary cell of the first downlink subframe, and the group determined according to the location of the downlink subframe where the acknowledgment information is located and the location of the serving cell. 2. The method according to claim 1, wherein the terminal divides the acknowledgment information of the Physical Downlink Shared Channel (PDSCH) into predetermined groups comprising: The terminal divides the acknowledgment information corresponding to the downlink subframe i corresponding to the uplink subframe into Hi groups; The predetermined group M and the Hi group corresponding to the downlink subframe i satisfy the following relationship: Where P is the number of downlink subframes corresponding to the uplink subframe. 3. The method according to claim 1, characterized in that, after the terminal divides the confirmation information of the physical downlink shared channel PDSCH into a predetermined group M, further comprising: The terminal sorts according to the index of the downlink subframe and the index of the serving cell on the same downlink subframe. 4. The method according to claim 3, wherein the terminal calculates the predetermined value M according to the index of the downlink subframe and the sequence of the primary cell and the secondary cell of the serving cell on the same downlink subframe Groups to sort include: The terminal sorts the M groups of predetermined values according to the index of the downlink subframe and the order of the primary cell and the secondary cell of the serving cell on the same downlink subframe in one of the following ways: The terminal arranges the predetermined value M groups according to the index of the downlink subframe in ascending order, and the groups on the same downlink subframe are sorted in the order of the primary cell and then the secondary cell; The terminal arranges the predetermined value M groups according to the index of the downlink subframe in ascending order, and the groups on the same downlink subframe are sorted in the order of the secondary cell first and then the primary cell. 5. The method according to claim 1, characterized in that, in the downlink subframe window corresponding to the uplink subframe, the DAI is the downlink subframe where it is located and all the previous downlink subframes where it is located The total number of PDSCH allocated to the terminal in the downlink subframe and PDCCH indicating the release of the semi-persistent scheduling SPS, wherein the PDSCH is one of the following: PDSCH with PDCCH; PDSCH with PDCCH and PDSCH without PDCCH. 6. The method according to claim 1, wherein, according to the DAI, the terminal maps the confirmation information corresponding to each of the M groups of the predetermined value to a predetermined amount of feedback information respectively, including: The terminal maps the acknowledgment information corresponding to each of the M groups of the predetermined value into a predetermined number of feedback information respectively through a logical AND operation according to the DAI, where the predetermined number is 1. 7. The method according to claim 6, wherein, according to the DAI, the terminal maps the confirmation information corresponding to each of the M groups of the predetermined value to a predetermined amount of feedback information respectively, including: The terminal determines that the PDCCH is lost according to the DAI, and maps the acknowledgment information corresponding to the group in which the PDCCH is lost to the non-acknowledgment message as NACK or DTX in a discontinuous state. 8. The method according to claim 6, further comprising: the terminal determining that there is no corresponding acknowledgment message among the groups of the predetermined value M, and sending the acknowledgment messages corresponding to the groups without corresponding acknowledgment messages Mapped as NACK or DTX. 9. The method of claim 1, further comprising: When the PDCCH corresponding to the acknowledgment information corresponding to one of the predetermined M groups is located in the primary cell, the PUCCH resource corresponding to the group corresponding to the acknowledgment message that the corresponding PDCCH is located in the primary cell is based on the location of the PDCCH. Control channel element CCE position mapping is obtained. 10. The method of claim 9, further comprising: The PUCCH resource is acquired through the CCE with the smallest index among the CCEs on the primary cell; or The PUCCH resource is acquired through the CCE with the smallest index among the CCEs corresponding to the cell with the highest priority in a predefined order on the primary cell. 11. The method of claim 1, further comprising: When the PDCCH corresponding to the acknowledgment information in one of the predetermined value M groups is not located in the primary cell, the corresponding PDCCH is not located in the primary cell. The PUCCH resource corresponding to the group corresponding to the acknowledgment message is configured according to the upper layer PUCCH resource acquisition; or The PUCCH resource corresponding to the group corresponding to the acknowledgment message that the corresponding PDCCH is not located in the primary cell is obtained according to the PUCCH resource configured by the higher layer and the ACK/NACK resource indication signaling ARI. 12. The method of claim 1, further comprising: When the acknowledgment information corresponding to one of the M groups of the predetermined value is only the acknowledgment information of PDSCH without PDCCH, the PUCCH resource corresponding to the group where the acknowledgment message of PDSCH without PDCCH is located passes through the PDSCH resource corresponding to PDSCH without PDCCH PUCCH resource acquisition; or The PUCCH resource corresponding to the group where the PDSCH acknowledgment message without PDCCH is located is acquired through the PUCCH resource configured by the higher layer and the predefined ACK/NACK resource indication signaling ARI. 13. The method of claim 1, wherein, According to the DAI, the terminal maps the confirmation information corresponding to each group of the predetermined value M groups into a predetermined amount of feedback information, including: The terminal maps the acknowledgment information corresponding to each of the predetermined M groups into 2-bit feedback information according to the DAI. 14. The method according to claim 1, wherein when the number of serving cells of the terminal is 2 and the number of downlink subframes corresponding to the uplink subframe is greater than K, it is determined that M is equal to 2, wherein, The acknowledgment information corresponding to each serving cell is 1 group, and when K is equal to 1 or 2, The DAI is the PDSCH allocated to the terminal in the downlink subframe of the serving cell where it is located in the downlink subframe window corresponding to the uplink subframe and all downlink subframes before the downlink subframe and the identifier SPS releases the PDCCH , wherein the PDSCH is one of the following: PDSCH with PDCCH; PDSCH with PDCCH and PDSCH without PDCCH. 15. The method according to claim 1, wherein when the number of serving cells of the terminal is 2 and the number of downlink subframes corresponding to the uplink subframe is greater than K, it is determined that M is equal to 2, wherein, The acknowledgment information corresponding to each serving cell is 1 group, and when K is equal to 1 or 2, According to the DAI, the terminal maps the confirmation information corresponding to each group of the predetermined value M groups into a predetermined amount of feedback information, including: The terminal sorts the confirmation information according to the value of the DAI corresponding to the confirmation information from small to large, and the confirmation information without the DAI is located before the confirmation information with the DAI, wherein, The confirmation information is the confirmation information in each group of the predetermined value M groups; The terminal maps the number of consecutive ACKs starting from the first acknowledgment information in the sorted acknowledgment information to a predetermined number of feedback information, wherein when the PDSCH corresponds to two acknowledgment information, the two The sorting operation is performed after the logical AND operation is performed on the confirmation information. 16. The method according to claim 15, wherein the terminal maps the acknowledgment information corresponding to each of the predetermined value M groups into a predetermined amount of feedback information according to the DAI in one of the following ways: : The terminal performs a spatial logical AND operation on the acknowledgment information of each group of the predetermined value M groups to map the number of ACKs to a predetermined number of feedback information, wherein the spatial logical AND operation is when one PDSCH corresponds to When there are two confirmation messages, the two confirmation messages are mapped to one confirmation message through a logical AND operation; The terminal performs a logical AND operation on all the acknowledgment information of each of the M groups of the predetermined value into one acknowledgment information, the acknowledgment information is 1-bit feedback information, and, when the feedback information is ACK , feeding back the number of PDSCHs received by the terminal in the group; The terminal maps all the acknowledgment information of each group of the predetermined value M groups through a logical AND operation to map the two acknowledgment information into one acknowledgment information, and when the feedback information is ACK, Feedback the count value corresponding to the last DAI received by the terminal in the group. 17. The method according to claim 1, wherein when the number of serving cells of the terminal is 2 and the number of downlink subframes corresponding to the uplink subframe is greater than K, it is determined that M is equal to 2, wherein, The acknowledgment information corresponding to each serving cell is 1 group, and when K is equal to 1 or 2, it also includes: The order of the two groups of feedback information is first the feedback information of the corresponding group of the primary cell and then the feedback information of the corresponding group of the secondary cell; or The order of the two groups of feedback information is first the feedback information of the group corresponding to the secondary cell and then the feedback information of the group corresponding to the primary cell. 18. The method according to claim 1, wherein when the number of serving cells of the terminal is 2 and the number of downlink subframes corresponding to the uplink subframe is greater than K, it is determined that M is equal to 2, wherein, The acknowledgment information corresponding to each serving cell is 1 group, and when K is equal to 1 or 2, it also includes: The terminal determines that the PDCCH is lost according to the DAI value, and then determines that the acknowledgment message corresponding to the lost PDCCH is NACK or DTX. 19. The method according to claim 1, wherein when the number of serving cells of the terminal is 2 and the number of downlink subframes corresponding to the uplink subframe is greater than K, it is determined that M is equal to 2, wherein, The acknowledgment information corresponding to each serving cell is 1 group, and when K is equal to 1 or 2, it also includes: When there is no acknowledgment information feedback in the predetermined value M groups, the terminal determines that the acknowledgment information of the group without acknowledgment information feedback is NACK or DTX; or The terminal determines that the number of feedback ACKs of the group without acknowledgment information feedback is 0. 20. The method of claim 1, wherein, The terminal divides the acknowledgment information of the PDSCH into M groups of predetermined values, including: The number of serving cells of the terminal is 2, and when the number of downlink subframes corresponding to the configuration window of the PDSCH is 2, it is determined that M is equal to 4, wherein each of the serving cells of each of the downlink subframes corresponds to The said confirmation information is 1 group; According to the DAI, the terminal maps the confirmation information corresponding to each group of the predetermined value M groups into a predetermined amount of feedback information, including: The terminal maps, according to the DAI, confirmation information corresponding to each of the M groups of the predetermined value into one confirmation information through a logical AND operation. 21. The method according to claim 1, wherein when the number of serving cells of the terminal is 2 and the number of downlink subframes corresponding to the uplink subframe is greater than K, it is determined that M is equal to 2, wherein, The acknowledgment information corresponding to each serving cell is 1 group, and when K is equal to 1 or 2, The two PUCCHs of the corresponding group of the primary cell are obtained by mapping the control channel element CCE position corresponding to the PDCCH where the DAI is equal to 1 in the corresponding group of the primary cell and the control channel element CCE position mapping where the PDCCH is located where the DAI is equal to 2, wherein , when only one acknowledgment message that DAI is equal to 1 is included in the corresponding group of the primary cell, the PUCCH resource is the PUCCH resource obtained by mapping the CCE position of the control channel element corresponding to the PDCCH where the DAI is equal to 1 and configured by the high layer, when the corresponding group of the primary cell When there is no acknowledgment information in , the PUCCH resource is a PUCCH resource configured by a higher layer. 22. The method according to claim 1, wherein when the number of serving cells of the terminal is 2 and the number of downlink subframes corresponding to the uplink subframe is greater than K, it is determined that M is equal to 2, wherein, The acknowledgment information corresponding to each serving cell is 1 group, and when K is equal to 1 or 2, The two PUCCHs of the group corresponding to the secondary cell are obtained according to the PUCCH resource and the ARI configured by the high layer, or the two PUCCHs of the group corresponding to the secondary cell are obtained according to the PUCCH resource configured by the high layer. 23. A terminal, characterized by comprising: A division module, configured to divide the acknowledgment information of the physical downlink shared channel PDSCH corresponding to an uplink subframe into M groups of predetermined values; A mapping module, configured to map the acknowledgment information corresponding to each of the predetermined value M groups into a predetermined amount of feedback information according to the downlink allocation information DAI, wherein the acknowledgment information includes an acknowledgment message ACK or a non-acknowledgment message NACK; a feedback module, configured to feed back the feedback information on the uplink subframe; Wherein, the terminal divides the acknowledgment information of the physical downlink shared channel PDSCH corresponding to an uplink subframe into M groups of predetermined values, including: The terminal divides the confirmation information into M groups of predetermined values according to at least one of the following methods: When P is 1 and Q is 3, M is 3, wherein the confirmation information corresponding to each serving cell configured by the terminal is a group; When P is 1 and Q is 4, M is 4, wherein the confirmation information corresponding to each serving cell configured by the terminal is a group; When P is 1 and Q is 5, M is 4, wherein the confirmation information corresponding to two secondary cells in the serving cell configured by the terminal is a set, and each of the other serving cells except the secondary cell The confirmation information corresponding to each serving cell is a group; When P is 2 and Q is greater than or equal to 2, M is 4, wherein, the acknowledgment information corresponding to each downlink subframe corresponding to the uplink subframe is divided into 2 groups, and the acknowledgment information corresponding to the primary cell in the downlink subframe The information is one group, and the confirmation information corresponding to the secondary cell is another group; When P is 3 and Q is greater than or equal to 2, M is 4, wherein the acknowledgment information corresponding to one downlink subframe in the downlink subframe corresponding to the uplink subframe is divided into two groups, and in the downlink subframe The confirmation information corresponding to the primary cell is one group, the confirmation information corresponding to the secondary cell is another group, and the confirmation information corresponding to each downlink subframe in the remaining downlink subframes is divided into one group; When P is 4 and Q is greater than or equal to 2, M is 4, wherein the acknowledgment information corresponding to each downlink subframe of the PDSCH is divided into 1 group; When P is 3 and Q is greater than or equal to 2, M is 3, wherein the confirmation information corresponding to each downlink subframe of the PDSCH is 1 group; Wherein, P is the number of downlink subframes corresponding to the uplink subframe, and Q is the number of serving cells configured by the terminal; Wherein, the terminal divides the acknowledgment information of the PDSCH into M groups of predetermined values and further includes: The number of serving cells of the terminal is 2, and when the number of downlink subframes corresponding to the uplink subframe is greater than K, it is determined that M is equal to 2, wherein the confirmation information corresponding to each serving cell is 1 group, and K is equal to 1 or 2; The terminal divides the acknowledgment information of the PDSCH without a physical downlink control channel PDCCH into a predetermined group; Wherein, the dividing the acknowledgment information of the PDSCH without PDCCH into a predetermined group includes: The terminal divides the acknowledgment information of the PDSCH without PDCCH into one of the following predetermined groups: The first group, the second group, the first downlink subframe corresponding to the primary cell in the downlink subframe corresponding to the uplink subframe, and the downlink subframe corresponding to the uplink subframe The group corresponding to the secondary cell of the first downlink subframe, and the group determined according to the location of the downlink subframe where the acknowledgment information is located and the location of the serving cell.