WO2018028337A1

WO2018028337A1 - Ack/nack feedback information transmission method and related device

Info

Publication number: WO2018028337A1
Application number: PCT/CN2017/091164
Authority: WO
Inventors: 高雪娟; 司倩倩; 潘学明
Original assignee: 电信科学技术研究院
Priority date: 2016-08-12
Filing date: 2017-06-30
Publication date: 2018-02-15
Also published as: CN107733584B; CN107733584A

Abstract

Disclosed in the present application are an ACK/NACK feedback information transmission method and a related device, which are used to solve the problem in the existing mechanisms of inconsistent understanding of a terminal and of a base station regarding the number of bits of ACK/NACK feedback and that correct parsing of ACK/NACK cannot be guaranteed. The method comprises: determining, by the terminal, ACK/NACK indication information, wherein the ACK/NACK indication information contains at least information used to determine the number of bits of the ACK/NACK feedback information transmitted by the terminal; and reporting, by the terminal, the ACK/NACK indication information and the ACK/NACK feedback information corresponding to the ACK/NACK indication information.

Description

ACK/NACK feedback information transmission method and related equipment

The present application claims priority to Chinese Patent Application No. 201610666325.2, entitled "A ACK/NACK Feedback Information Transmission Method and Related Equipment", filed on August 12, 2016, the entire contents of which are hereby incorporated by reference. Combined in this application.

Technical field

The present application relates to the field of communications technologies, and in particular, to an ACK/NACK feedback information transmission method and related device.

Background technique

I. Existing LTE frame structure (LTE Rel-8/9/10/11/12/13)

The existing Long Term Evolution (LTE) Frequency Division Duplex (FDD) system uses Frame Structure Type 1, FS1. In FDD systems, the uplink and downlink transmissions use different carrier frequencies, and the uplink and downlink transmissions use the same frame structure. Figure 1 shows the structure of FS1. On each carrier, a 10ms-length radio frame contains 10 1ms subframes. Each subframe is divided into two 0.5ms-length slots, and uplink and downlink data are sent. The Transmission Time Interval (TTI) is 1 ms.

The existing LTE Time Division Duplex (TDD) system uses Frame Structure Type 2 (FS2). In a TDD system, uplink and downlink transmissions use different subframes or different time slots on the same frequency. Figure 2 shows the structure of the FS2. Each 10 ms length radio frame in FS2 consists of two 5 ms length half frames, each of which contains five 1 ms length subframes. The sub-frames in FS2 are classified into three types: downlink sub-frames, uplink sub-frames, and special sub-frames. Each special sub-frame consists of Downlink Pilot Time Slot (DwPTS) and Guard Period (Guard Period, GP) and Uplink Pilot Time Slot (UpPTS) are composed of three parts. The DwPTS can be used to transmit downlink pilot, downlink service data, and downlink control signaling; the GP does not transmit any signal; the UpPTS can only be used to transmit random access signals and Sounding Reference Symbols (SRS), which cannot be used for transmission. Uplink service or uplink control information. Each field includes at least one downlink subframe and at least one uplink subframe, and at most one special subframe. Table 7 lists the seven uplink and downlink subframe configurations supported by FS2.

Table 1: Uplink and downlink configurations

Second, the existing LTE FDD / TDD ACK / NACK feedback timing

In the LTE Rel-8 system, for the FDD system, since there are uplink resources in each subframe, the ACK/NACK feedback information of the downlink subframe numbered n is transmitted in the uplink subframe numbered n+k.

For the TDD system, since the uplink and downlink transmissions share the frequency domain resources, the uplink and downlink subframe division as shown in Table 1 needs to be performed. Therefore, the ACK/NACK feedback information of different downlink subframes may need to be transmitted in the same uplink subframe. As shown in Table 2, according to each element in the set K: {k ₀ , k ₁ , ... k _M-1 } corresponding to the uplink subframe numbered n, it can be determined that ACK needs to be performed in the uplink subframe. The downlink subframe of the /NACK feedback (including the downlink subframe numbered nk, including the special subframe), the same uplink subframe needs to feed back the ACK/NACK feedback information of the M downlink subframes, and M is the set K. The number of elements, different uplink subframes, and different TDD uplink and downlink configuration values are not necessarily the same.

Table 2 Downlink association set index K: {k ₀ , k ₁ ,...k _M-1 }for TDD

It should be noted that the numbers in Table 2 are in the form of radio frames, and the subframe numbered n-k. If the subframe number n-k is less than zero, it indicates that the subframe belongs to the previous radio frame.

When carrier aggregation is performed, one terminal can work on multiple carriers at the same time, but only ACK/NACK feedback information can be transmitted in the Physical Uplink Control Channel (PUCCH) of some carriers, such as the primary member carrier (Primary). Component Carrier, PCC). Therefore, the terminal needs to feed back ACK/NACK feedback information corresponding to multiple carriers in one uplink subframe. When the carriers aggregated by the terminal are all FDD carriers, the ACK/NACK feedback timing on each carrier is performed according to n+4. When the carriers aggregated by the terminal are all TDD carriers, if the TDD uplink and downlink configurations of all the TDD carriers are the same, the ACK/NACK feedback timing on each carrier is in accordance with the feedback timing shown in Table 2 corresponding to the TDD uplink and downlink configuration. If the TDD uplink and downlink configurations of the aggregated TDD carrier are different, the reference TDD uplink and downlink configuration is defined for the secondary component carrier (SCC) according to a specific rule, according to the table corresponding to the reference TDD uplink and downlink configuration. The feedback timing in 2 performs ACK/NACK feedback. When the carrier aggregated by the terminal includes both the FDD carrier and the TDD carrier, if the FDD carrier is used as the PCC, the ACK/NACK feedback timing on each carrier is performed according to n+4. If the TDD carrier is used as the PCC, it needs to be followed. For a specific rule, the secondary component carrier (SCC) defines a reference TDD uplink and downlink configuration, and performs ACK/NACK feedback according to the feedback timing in Table 2 corresponding to the TDD uplink and downlink configuration.

In the subsequent version, the aggregation carrier is further divided into multiple carrier groups, and ACK/NACK feedback is performed on the PUCCH on one carrier in each carrier group. At this time, each carrier group is aggregated according to the carrier group. One of the above situations corresponding to the carrier determines the feedback timing of the SCC in the carrier group.

When each carrier aggregated by the terminal adopts the feedback timing of the FDD, the number of bits of the ACK/NACK feedback information transmitted in the same uplink subframe is determined according to the number of configured carriers, the transmission mode of each carrier, and whether spatial combining is used. , ie the number of ACK/NACK bits

Wherein, when the carrier i is in the single TB transmission mode or the multi-TB transmission mode and spatial combining is adopted, C _i =1; otherwise, when the carrier i is in the multi-TB transmission mode and spatial combining is not adopted, C _i =2. When the at least one carrier aggregated by the terminal adopts the feedback timing of the TDD, the number of bits of the ACK/NACK feedback information transmitted in the same uplink subframe is determined according to the configured carrier number, the M value, the transmission mode of each carrier, and whether the carrier mode is adopted. Space merging to determine, ie the number of ACK/NACK bits

Wherein, when carrier i is in a single TB transmission mode or a multi-TB transmission mode and spatial combining is used, C _i =1; otherwise, when carrier i is in a multi-TB transmission mode and spatial combining is not used, C _i = 2, M _i is the number of downlink subframes corresponding to the carrier i that need to perform ACK/NACK feedback in the same uplink subframe.

In the LTE system, the existing channel transmission is defined by TTI=1ms, when using a TTI length other than 1ms. The length of the TTI of the downlink transmission may be changed. In addition, the base station may also dynamically adjust the feedback delay of the ACK/NACK transmission by the terminal. Therefore, the number of downlink transmissions for performing ACK/NACK feedback in the same uplink TTI may be The length of the TTI is different, and the delay indicated by the base station is dynamically changed. Therefore, there is no fixed-size feedback window, that is, there is no fixed M value. Therefore, when multiple ACK/NACK feedback is performed in the same uplink TTI, multiple downlink transmissions are performed. When there is a packet loss, the terminal and the base station will have an inconsistent understanding of the length of the ACK/NACK feedback sequence, causing the base station to incorrectly parse the ACK/NACK feedback, thereby affecting the downlink throughput. The method for determining the number of ACK/NACK feedback bits according to the configured carrier, the transmission mode, and the M size in the existing mechanism is no longer applicable. It is necessary to study a new method to ensure that the terminal and the base station understand the number of ACK/NACK feedback bits, thereby ensuring ACK/ Correct analysis of NACK, avoiding downlink retransmissions as much as possible.

Summary of the invention

The embodiment of the present application provides an ACK/NACK feedback information transmission method and related device, which is used to solve the problem that the ACK/NACK feedback bit number is inconsistent between the terminal and the base station in the existing mechanism, and the ACK/NACK cannot be correctly parsed.

The specific technical solutions provided by the embodiments of the present application are as follows:

In a first aspect, an ACK/NACK feedback information transmission method is provided in the embodiment of the present application, including:

Determining, by the terminal, ACK/NACK indication information, where the ACK/NACK indication information includes at least information for determining a number of bits of ACK/NACK feedback information transmitted by the terminal;

The terminal reports the ACK/NACK indication information and the ACK/NACK feedback information corresponding to the ACK/NACK indication information.

In a possible implementation manner, the ACK/NACK indication information is transmitted in the same transmission time interval TTI as the ACK/NACK feedback information; or the ACK/NACK indication information is ahead of the ACK/NACK feedback information. The transmission interval is transmitted in the TTI.

In a possible implementation manner, the ACK/NACK indication information is transmitted on the same channel or different channels as the ACK/NACK feedback information.

In a possible implementation, if the ACK/NACK indication information is transmitted in the same channel as the ACK/NACK feedback information, the ACK/NACK indication information and the ACK/NACK feedback information are respectively on the same channel. Different time domain and frequency domain resources are used for independent transmission.

In a possible implementation, if the ACK/NACK indication information and the ACK/NACK feedback information are transmitted in different channels, the terminal reports the ACK/NACK indication information and is related to the ACK/NACK indication information. Corresponding ACK/NACK feedback information, including:

Determining, by the terminal, a first channel resource for transmitting the ACK/NACK indication information, and transmitting the ACK/NACK indication information on the first channel resource;

Determining, by the terminal, a second channel resource for transmitting the ACK/NACK feedback information, and transmitting the ACK/NACK feedback information on the second channel resource, where the first channel resource and the second channel Channel resources are different.

In a possible implementation manner, the channel format for transmitting the ACK/NACK indication information is the same as or different from the channel format for transmitting the ACK/NACK feedback information.

In a possible implementation, the determining, by the terminal, the first channel resource for transmitting the ACK/NACK indication information includes:

The terminal acquires the first channel resource pre-configured by the network side through the high layer signaling; or the terminal acquires the first channel resource set preconfigured by the network side through the high layer signaling, and according to the bit field in the downlink control channel Determining at least one first channel resource in the first set of channel resources.

In a possible implementation, the ACK/NACK indication information is used to indicate the total number of bits of the ACK/NACK feedback information reported by the terminal or the downlink transmission corresponding to the ACK/NACK feedback information reported by the terminal. a total number; or, the ACK/NACK indication information indicates a total number of bits of the ACK/NACK feedback information of the terminal on each carrier in the aggregate/activated carrier or each of the terminals in the aggregate/activated carrier The total number of downlink transmissions corresponding to the ACK/NACK feedback information on the carriers.

In a possible implementation, if the ACK/NACK indication information is used to indicate the total number of bits of the ACK/NACK feedback information reported by the terminal or the downlink corresponding to the ACK/NACK feedback information reported by the terminal The total number of transmissions, the terminal determining the ACK/NACK indication information, specifically: the terminal generates ACK/NACK feedback information, and uses the number of bits of the ACK/NACK feedback information as the ACK/NACK indication information, or Describe the total number of downlink transmissions corresponding to the ACK/NACK feedback information, as the ACK/NACK indication information; or

The terminal generates ACK/NACK feedback information, and selects a value that is not less than the number of bits of the ACK/NACK feedback information in the number of bits of the plurality of ACK/NACK feedback information that is pre-configured or defined by the high-layer signaling. The ACK/NACK indication information, or a value of not less than a total number of downlink transmissions corresponding to the ACK/NACK feedback information, is selected as the ACK in a plurality of downlink transmissions pre-configured in a predefined or higher layer signaling. /NACK indication information; or

The terminal generates ACK/NACK feedback information for each aggregate/activated carrier, and multiplies the maximum value of the number of bits of the ACK/NACK feedback information of each aggregate/activated carrier and the number of aggregated/activated carriers as the ACK/NACK indication information, or the product of the maximum value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of each aggregate/activated carrier and the number of aggregated/activated carriers is used as the ACK/NACK indication information; or

The terminal generates ACK/NACK feedback information, and uses the number of ACK/NACK feedback information bits corresponding to the total number of downlink transmissions indicated in the downlink control channel corresponding to the ACK/NACK feedback information as the ACK/NACK indication information. Or using the total number of downlink transmissions as the ACK/NACK indication information;

And if the ACK/NACK indication information indicates the terminal is on the carrier in each of the aggregated/activated carriers The total number of bits of the ACK/NACK feedback information or the total number of downlink transmissions corresponding to the ACK/NACK feedback information on the carrier in the aggregation/activation carrier, the terminal determining the ACK/NACK indication information, specifically include:

The terminal generates ACK/NACK feedback information for each aggregation/activation carrier, and uses the number of bits of ACK/NACK feedback information of each aggregation/activation carrier as the corresponding aggregation/activation carrier in the ACK/NACK indication information. Instructing information, or using the total number of downlink transmissions corresponding to the ACK/NACK feedback information of each aggregation/activation carrier as the indication information corresponding to the aggregation/activation carrier in the ACK/NACK indication information; or

The terminal generates ACK/NACK feedback information for each aggregation/activation carrier, and selects not less than the ACK/NACK feedback information among the number of bits of the multiple ACK/NACK feedback information pre-configured by the predefined or higher layer signaling. a value of the number of bits, as the indication information corresponding to the aggregated/activated carrier in the ACK/NACK indication information, or selecting not less than the ACK in the total number of downlink transmissions pre-configured in the predefined or higher layer signaling And a value of the total number of downlink transmissions corresponding to the /NACK feedback information, as the indication information corresponding to the aggregation/activation carrier in the ACK/NACK indication information.

In a possible implementation, the terminal generates ACK/NACK feedback information, or the terminal generates ACK/NACK feedback information for each aggregation/activation carrier, which specifically includes:

The terminal generates ACK/NACK feedback information according to the downlink allocation index DAI corresponding to the downlink transmission that feeds back the ACK/NACK feedback information at the same time; or

The terminal generates ACK/NACK feedback information according to a transmission time interval TTI number and/or a process number and/or a carrier number of a downlink transmission that feeds back ACK/NACK feedback information at the same time.

In a possible implementation, the terminal generates ACK/NACK feedback information, and selects one of the number of bits of the ACK/NACK feedback information that is pre-configured in the pre-defined or high-layer signaling to be not smaller than the ACK/NACK feedback information. a value of the number of bits, as the ACK/NACK indication information, or a total of a plurality of downlink transmissions pre-configured in a predefined or higher layer signaling, not less than a total number of downlink transmissions corresponding to the ACK/NACK feedback information A value, as the ACK/NACK indication information, includes:

When the sequence length of the ACK/NACK feedback information is smaller than the total number of ACK/NACK bits indicated by the ACK/NACK indication information, or when the total number of downlink transmissions corresponding to the ACK/NACK feedback information is smaller than the ACK/ When the NACK indicates the total number of downlink transmissions indicated by the information, the terminal supplements the NACK at the end of the sequence of the ACK/NACK feedback information until the sequence length of the ACK/NACK feedback information is equal to that indicated by the ACK/NACK indication information. The total number of ACK/NACK bits or the total number of ACK/NACK bits corresponding to the total number of downlink transmissions indicated by the ACK/NACK indication information;

The terminal generates ACK/NACK feedback information for each aggregate/activated carrier, and multiplies the maximum value of the number of bits of the ACK/NACK feedback information of each aggregate/activated carrier and the number of aggregated/activated carriers as the ACK/NACK indication information, or downlink transmission corresponding to ACK/NACK feedback information of each aggregate/activated carrier The product of the maximum value of the total number and the number of aggregated/activated carriers is used as the ACK/NACK indication information, including:

When the number of bits of ACK/NACK feedback information of an aggregated/activated carrier is smaller than the maximum number of bits of ACK/NACK feedback information of each aggregated/activated carrier, or when ACK/NACK feedback of an aggregated/activated carrier When the total number of downlink transmissions corresponding to the information is smaller than the maximum value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of each of the aggregated/activated carriers, the ACK/NACK feedback information of the terminal on the aggregated/activated carrier The sequence is supplemented with NACK until the sequence length of the ACK/NACK feedback information of the aggregate/activated carrier is equal to the maximum value of the number of bits of the ACK/NACK feedback information of each aggregate/activated carrier or each aggregation/activation The total number of ACK/NACK bits corresponding to the maximum value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of the carrier;

The terminal generates ACK/NACK feedback information for each aggregation/activation carrier, and selects one of the number of bits of the multiple ACK/NACK feedback information pre-configured by the predefined or higher layer signaling to be not smaller than the ACK/NACK feedback information. a value of the number of bits, as the indication information corresponding to the aggregated/activated carrier in the ACK/NACK indication information, or one of the plurality of downlink transmissions pre-configured in the predefined or higher layer signaling is not less than A value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information, as the indication information corresponding to the aggregation/activation carrier in the ACK/NACK indication information, includes:

When the sequence length of the ACK/NACK feedback information of an aggregate/activated carrier is smaller than the total number of ACK/NACK bits of the one aggregate/activated carrier indicated by the ACK/NACK indication information, or when an aggregate/activated carrier is used When the total number of downlink transmissions corresponding to the ACK/NACK feedback information is smaller than the total number of downlink transmissions of the one aggregated/activated carrier indicated by the ACK/NACK indication information, the terminal is ACK/NACK on the one aggregate/activated carrier. The sequence of the feedback information is complemented with NACK until the sequence length of the ACK/NACK feedback information of the one aggregate/activated carrier is equal to the total number of ACK/NACK bits of the one aggregate/activated carrier indicated by the ACK/NACK indication information. Or the total number of ACK/NACK bits corresponding to the total number of downlink transmissions of the one aggregate/activated carrier indicated by the ACK/NACK indication information.

In a possible implementation manner, when there is an ACK/NACK feedback that is required for the physical downlink shared channel without the corresponding downlink control channel, the total number of ACK/NACK bits or the total number of downlink transmissions indicated by the ACK/NACK indication information is increased by one.

In a second aspect, the embodiment of the present application provides a method for transmitting ACK/NACK feedback information, including:

The eNB receives the ACK/NACK indication information reported by the terminal, where the ACK/NACK indication information includes at least information for determining the number of bits of the ACK/NACK feedback information transmitted by the terminal;

The base station receives the ACK/NACK feedback information reported by the terminal according to the ACK/NACK indication information.

In a possible implementation manner, the ACK/NACK indication information is the same as the ACK/NACK feedback information. Transmission in channels or different channels.

In a possible implementation, if the ACK/NACK indication information and the ACK/NACK feedback information are transmitted in different channels, the base station receives the ACK/NACK indication information reported by the terminal, according to the ACK/NACK indication information. Receiving the ACK/NACK feedback information reported by the terminal, including:

Determining, by the base station, a first channel resource for transmitting the ACK/NACK indication information, and receiving the ACK/NACK indication information on the first channel resource;

Determining, by the base station, a second channel resource for transmitting the ACK/NACK feedback information, and receiving the ACK/NACK feedback information on the second channel resource, where the first channel resource and the second channel Channel resources are different.

In a possible implementation, the determining, by the base station, the first channel resource for transmitting the ACK/NACK indication information includes:

Determining, by the base station, that the first channel resource is pre-configured to the terminal by the base station by using high layer signaling;

Or the base station determines that the first channel resource is at least one first channel resource in the first channel resource set that is indicated by the base station to the terminal by using a bit field in a downlink control channel, the first channel resource. The set is pre-configured to the terminal by the base station by high layer signaling.

In a possible implementation, the ACK/NACK indication information is used to indicate the total number of bits of the ACK/NACK feedback information reported by the terminal or the downlink transmission corresponding to the ACK/NACK feedback information reported by the terminal. total;

Or the ACK/NACK indication information indicates a total number of bits of the ACK/NACK feedback information on each carrier in the aggregated/activated carrier or each carrier in the aggregate/activated carrier of the terminal The total number of downlink transmissions corresponding to the ACK/NACK feedback information.

In a possible implementation, if the ACK/NACK indication information is used to indicate the total number of bits of the ACK/NACK feedback information reported by the terminal or the downlink corresponding to the ACK/NACK feedback information reported by the terminal And the total number of transmissions, the receiving, by the base station, the ACK/NACK feedback information reported by the terminal, according to the ACK/NACK indication information, specifically:

Determining, by the base station, that the ACK/NACK indication information indicates a number of bits of the ACK/NACK feedback information, or the ACK/NACK indication information indicating a total number of downlink transmissions corresponding to the ACK/NACK feedback information; or

Determining, by the base station, that the ACK/NACK indication information indicates a plurality of pre-defined or high-level signaling pre-configured a value of the number of bits of the ACK/NACK feedback information that is not less than a value of the number of bits of the ACK/NACK feedback information, or the ACK/NACK indication information indicates a plurality of downlink transmissions pre-configured by a predefined or higher layer signaling Not less than a value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information; or

Determining, by the base station, that the ACK/NACK indication information indicates a product of a maximum number of bits of ACK/NACK feedback information of each aggregate/activated carrier and a number of aggregated/activated carriers, or the ACK/NACK indication information indication The product of the maximum number of downlink transmissions corresponding to the ACK/NACK feedback information of each aggregate/activated carrier and the number of aggregated/activated carriers; or

Determining, by the base station, the ACK/NACK indication information indicating the number of ACK/NACK feedback information bits or the total number of downlink transmissions corresponding to the total number of downlink transmissions indicated in the downlink control channel corresponding to the ACK/NACK feedback information;

If the ACK/NACK indication information indicates the total number of bits of the ACK/NACK feedback information on the carrier in the aggregated/activated carrier or the terminal is on each carrier in the aggregate/activated carrier Receiving the total number of downlink transmissions corresponding to the ACK/NACK feedback information, the receiving, by the base station, the ACK/NACK feedback information reported by the terminal according to the ACK/NACK indication information, specifically, the determining, by the base station, the ACK/NACK The indication information includes indication information corresponding to each aggregation/activation carrier of the terminal, and indication information corresponding to an aggregate/activated carrier of the terminal indicates the number of bits of ACK/NACK feedback information of the aggregated/activated carrier, or The indication information corresponding to an aggregation/activation carrier of the terminal indicates the total number of downlink transmissions corresponding to the ACK/NACK feedback information of the one aggregation/activation carrier; or

Determining, by the base station, that the ACK/NACK indication information includes indication information corresponding to each aggregation/activation carrier of the terminal, and indication information corresponding to an aggregate/activated carrier of the terminal indicates pre-defined or high-layer signaling pre-configuration One of the number of bits of the plurality of ACK/NACK feedback information is not less than a value of the number of bits of the ACK/NACK feedback information of the one aggregated/activated carrier, or an indication of the indication information corresponding to an aggregate/activated carrier of the terminal The pre-defined or high-level signaling pre-configured plurality of downlink transmissions is not less than a value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of the one aggregation/activation carrier.

In a possible implementation manner, the base station determines that the terminal generates ACK/NACK feedback information according to the following manner: the terminal generates an ACK according to a downlink allocation index DAI corresponding to a downlink transmission that feeds back ACK/NACK feedback information at the same time. /NACK feedback information; or

In a possible implementation manner, when the base station determines that the ACK/NACK indication information indicates that the ACK/NACK feedback information of the plurality of ACK/NACK feedback information pre-configured by the predefined or higher layer signaling is not smaller than the ACK/NACK feedback information. a value of the number of bits, or the ACK/NACK indication information indicating one of a plurality of downlink transmissions pre-configured by the predefined or higher layer signaling not less than a total number of downlink transmissions corresponding to the ACK/NACK feedback information And receiving, by the base station, the ACK/NACK feedback information reported by the terminal according to the ACK/NACK indication information, specifically:

The base station determines that the terminal generates ACK/NACK feedback information as follows:

When the sequence length of the ACK/NACK feedback information generated by the terminal according to the detected downlink transmission is smaller than the total number of ACK/NACK bits indicated by the ACK/NACK indication information, or the total number of downlink transmissions detected by the terminal When the total number of downlink transmissions indicated by the ACK/NACK indication information is smaller, the terminal supplements the NACK at the end of the sequence of the ACK/NACK feedback information until the sequence length of the ACK/NACK feedback information is equal to the ACK/NACK. Indicates the total number of ACK/NACK bits indicated by the indication information or the total number of ACK/NACK bits corresponding to the total number of downlink transmissions indicated by the ACK/NACK indication information;

When the base station determines that the ACK/NACK indication information indicates a product of a maximum number of bits of ACK/NACK feedback information of each aggregate/activated carrier and a number of aggregated/activated carriers, or the ACK/NACK indication information And when the base station indicates the product of the maximum value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of each aggregation/activation carrier and the number of aggregation/activation carriers, the base station receives the terminal report according to the ACK/NACK indication information. The ACK/NACK feedback information includes: determining, by the base station, that the terminal generates ACK/NACK feedback information according to the following manner:

When the number of bits of the ACK/NACK feedback information generated by the terminal according to the detected downlink transmission on an aggregate/activated carrier is smaller than the maximum value of the number of bits of the ACK/NACK feedback information of each aggregate/activated carrier, Or when the total number of downlink transmissions detected by the terminal on one aggregation/activation carrier is smaller than the maximum value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of each aggregation/activation carrier, the terminal is in the The sequence of ACK/NACK feedback information of the aggregated/activated carrier is complemented by a NACK until the sequence length of the ACK/NACK feedback information of the aggregated/activated carrier is equal to the number of bits of the ACK/NACK feedback information of each aggregated/activated carrier. The maximum value of the ACK/NACK total number of bits corresponding to the maximum value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of each of the aggregated/activated carriers;

When the eNB determines that the ACK/NACK indication information includes indication information corresponding to each aggregation/activation carrier of the terminal, the indication information corresponding to an aggregation/activation carrier of the terminal indicates a pre-defined or high-layer signaling advance. One of the number of bits of the configured ACK/NACK feedback information is not less than a value of the number of bits of the ACK/NACK feedback information of the one aggregated/activated carrier, or an indication corresponding to an aggregate/activated carrier of the terminal Determining, according to the total number of downlink transmissions corresponding to the ACK/NACK feedback information of the one aggregation/activation carrier, that the pre-defined or high-level signaling pre-configured multiple downlink transmission totals are The ACK/NACK indication information is used to receive the ACK/NACK feedback information reported by the terminal, and the method includes: determining, by the base station, that the terminal generates ACK/NACK feedback information according to the following manner:

When the terminal is on an aggregate/activated carrier, the sequence length of the ACK/NACK feedback information generated according to the detected downlink transmission is smaller than the one of the aggregate/activated carriers indicated by the ACK/NACK indication information. When the total number of ACK/NACK bits is used, or when the total number of downlink transmissions detected by the terminal on one aggregate/activated carrier is smaller than the total number of downlink transmissions of the one aggregated/activated carrier indicated by the ACK/NACK indication information, The terminal adds a NACK to the end of the sequence of the ACK/NACK feedback information of the one aggregation/activation carrier until the sequence length of the ACK/NACK feedback information of the one aggregation/activation carrier is equal to that indicated by the ACK/NACK indication information. The total number of ACK/NACK bits of the aggregate/activated carrier or the total number of ACK/NACK bits corresponding to the total number of downlink transmissions of the one aggregate/activated carrier indicated by the ACK/NACK indication information.

In a possible implementation manner, when there is an ACK/NACK feedback that is required for the physical downlink shared channel that does not have a corresponding downlink control channel, the base station determines that the total number of ACK/NACK bits indicated by the ACK/NACK indication information includes the The physical downlink shared channel is included in the number of bits of the ACK/ANCK feedback information of the physical downlink shared channel or the total number of downlink transmissions.

In a third aspect, an embodiment of the present application provides a terminal, including:

a processing module, configured to determine ACK/NACK indication information, where the ACK/NACK indication information includes at least information for determining a number of bits of ACK/NACK feedback information transmitted by the terminal;

And a reporting module, configured to report the ACK/NACK indication information and the ACK/NACK feedback information corresponding to the ACK/NACK indication information.

In a possible implementation, if the ACK/NACK indication information and the ACK/NACK feedback information are transmitted in different channels, the reporting module is specifically configured to: determine, to transmit the ACK/NACK indication information a channel resource, transmitting the ACK/NACK indication information on the first channel resource; determining a second channel resource for transmitting the ACK/NACK feedback information, and transmitting the ACK on the second channel resource /NACK feedback information, wherein the first channel resource is different from the second channel resource.

In a possible implementation, the reporting module is specifically configured to: acquire the first channel resource that is pre-configured by the network side by using the high-layer signaling; or obtain the first channel resource set that is pre-configured by the network side by using the high-layer signaling, and And determining, according to the bit field in the downlink control channel, at least one first channel resource in the first channel resource set.

In a possible implementation, if the ACK/NACK indication information is used to indicate the total number of bits of the ACK/NACK feedback information reported by the terminal or the downlink corresponding to the ACK/NACK feedback information reported by the terminal The total number of transmissions, the processing module is specifically used to:

Generating ACK/NACK feedback information, using the number of bits of the ACK/NACK feedback information as the ACK/NACK indication information, or using the total number of downlink transmissions corresponding to the ACK/NACK feedback information as the ACK/NACK indication information ;or

Generating ACK/NACK feedback information, and selecting, as the ACK, a value that is not less than the number of bits of the ACK/NACK feedback information among the number of bits of the plurality of ACK/NACK feedback information pre-configured by the pre-defined or higher layer signaling /NACK indication information, or selecting a value not less than a total number of downlink transmissions corresponding to the ACK/NACK feedback information among a plurality of downlink transmission totals pre-configured or defined by the high-level signaling, as the ACK/NACK indication Information; or

Generating ACK/NACK feedback information for each aggregate/activated carrier, and multiplying the maximum number of bits of the ACK/NACK feedback information of each aggregate/activated carrier by the number of aggregated/activated carriers as the ACK/NACK The indication information, or the product of the maximum value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of each aggregation/activation carrier and the number of aggregation/activation carriers, as the ACK/NACK indication information; or

Generating ACK/NACK feedback information, and using the number of ACK/NACK feedback information bits corresponding to the total number of downlink transmissions indicated in the downlink control channel corresponding to the ACK/NACK feedback information as the ACK/NACK indication information, or Describe the total number of downlink transmissions as the ACK/NACK indication information;

If the ACK/NACK indication information indicates the total number of bits of the ACK/NACK feedback information on the carrier in the aggregated/activated carrier or the terminal is on each carrier in the aggregate/activated carrier The total number of downlink transmissions corresponding to the ACK/NACK feedback information, and the determining module is specifically configured to:

Generating ACK/NACK feedback information for each aggregate/activated carrier, and using the number of bits of the ACK/NACK feedback information of each aggregate/activated carrier as the indication information corresponding to the aggregated/activated carrier in the ACK/NACK indication information, Or the total number of downlink transmissions corresponding to the ACK/NACK feedback information of each aggregation/activation carrier is used as the indication information corresponding to the aggregation/activation carrier in the ACK/NACK indication information; or

Generating ACK/NACK feedback information for each aggregate/activated carrier, and selecting a number of bits not less than the number of bits of the ACK/NACK feedback information among the number of bits of the plurality of ACK/NACK feedback information pre-configured by the predefined or higher layer signaling a value as the indication information corresponding to the aggregate/activated carrier in the ACK/NACK indication information, or in advance A value of not less than a total number of downlink transmissions corresponding to the ACK/NACK feedback information is selected as a corresponding aggregation/activation in the ACK/NACK indication information, among the total number of downlink transmissions pre-configured by the defined or higher layer signaling. Carrier indication information.

In a possible implementation manner, the processing module is specifically configured to: generate ACK/NACK feedback information according to a downlink allocation index DAI corresponding to downlink transmission that feeds back ACK/NACK feedback information at the same time; or feedback according to the same moment The transmission time interval TTI number and/or the process number and/or the carrier number of the downlink transmission of the ACK/NACK feedback information generates ACK/NACK feedback information.

In a possible implementation manner, the processing module is specifically configured to:

When the sequence length of the ACK/NACK feedback information is smaller than the total number of ACK/NACK bits indicated by the ACK/NACK indication information, or when the total number of downlink transmissions corresponding to the ACK/NACK feedback information is smaller than the ACK/ When the NACK indicates the total number of downlink transmissions indicated by the information, the NACK is added to the end of the sequence of the ACK/NACK feedback information until the sequence length of the ACK/NACK feedback information is equal to the ACK/NACK indicated by the ACK/NACK indication information. The total number of bits or the total number of ACK/NACK bits corresponding to the total number of downlink transmissions indicated by the ACK/NACK indication information;

When the number of bits of ACK/NACK feedback information of an aggregated/activated carrier is smaller than the maximum number of bits of ACK/NACK feedback information of each aggregated/activated carrier, or when ACK/NACK feedback of an aggregated/activated carrier When the total number of downlink transmissions corresponding to the information is smaller than the maximum value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of each aggregate/activated carrier, the end of the sequence of ACK/NACK feedback information of the aggregated/activated carrier is added. NACK, the sequence length of the ACK/NACK feedback information of the aggregate/activated carrier is equal to the maximum value of the number of bits of the ACK/NACK feedback information of each aggregate/activated carrier or the ACK of each of the aggregated/activated carriers The total number of ACK/NACK bits corresponding to the maximum value of the total number of downlink transmissions corresponding to the /NACK feedback information;

When the sequence length of the ACK/NACK feedback information of an aggregate/activated carrier is smaller than the total number of ACK/NACK bits of the one aggregate/activated carrier indicated by the ACK/NACK indication information, or when an aggregate/activated carrier is used When the total number of downlink transmissions corresponding to the ACK/NACK feedback information is smaller than the total number of downlink transmissions of the one aggregated/activated carrier indicated by the ACK/NACK indication information, the ACK/NACK feedback information of the one aggregated/activated carrier NACK is added to the end of the sequence until the sequence length of the ACK/NACK feedback information of the one aggregate/activated carrier is equal to the total number of ACK/NACK bits of the one aggregate/activated carrier indicated by the ACK/NACK indication information or the The ACK/NACK indicates the total number of ACK/NACK bits corresponding to the total number of downlink transmissions of the one aggregate/activated carrier indicated by the information.

In a fourth aspect, an embodiment of the present application provides a base station, including:

a first receiving module, configured to receive ACK/NACK indication information reported by the terminal, where the ACK/NACK indication information includes at least information for determining a number of bits of ACK/NACK feedback information transmitted by the terminal;

And a second receiving module, configured to receive, according to the ACK/NACK indication information, ACK/NACK feedback information reported by the terminal.

In a possible implementation, if the ACK/NACK indication information and the ACK/NACK feedback information are transmitted in different channels, the first receiving module is specifically configured to: determine to transmit the ACK/NACK indication information. a first channel resource, where the ACK/NACK indication information is received on the first channel resource;

The second receiving module is specifically configured to: determine a second channel resource for transmitting the ACK/NACK feedback information, and receive the ACK/NACK feedback information on the second channel resource, where the first The channel resource is different from the second channel resource.

In a possible implementation, the first receiving module is specifically configured to:

Determining that the first channel resource is pre-configured to the terminal by the base station by using high layer signaling;

Or determining, by the base station, at least one first channel resource in the first channel resource set of the terminal that is indicated by the base station by using a bit field in a downlink control channel, where the first channel resource set is The base station is pre-configured to the terminal by high layer signaling.

In a possible implementation, if the ACK/NACK indication information is used to indicate the total number of bits of the ACK/NACK feedback information reported by the terminal or the ACK/NACK feedback information reported by the terminal, The total number of rows transmitted, the second receiving module is specifically used to:

Determining, by the ACK/NACK indication information, a number of bits of the ACK/NACK feedback information, or the ACK/NACK indication information indicating a total number of downlink transmissions corresponding to the ACK/NACK feedback information; or

Determining that the ACK/NACK indication information indicates a value of a number of bits of the plurality of ACK/NACK feedback information pre-configured by the pre-defined or higher layer signaling that is not less than the number of bits of the ACK/NACK feedback information, or The ACK/NACK indication information indicates a value of not less than a total number of downlink transmissions corresponding to the ACK/NACK feedback information, which is a pre-defined or high-level signaling pre-configured plurality of downlink transmission totals; or

Determining that the ACK/NACK indication information indicates a product of a maximum value of the number of bits of ACK/NACK feedback information of each aggregate/activated carrier and a number of aggregated/activated carriers, or the ACK/NACK indication information indicates each aggregation /the product of the maximum number of downlink transmissions corresponding to the ACK/NACK feedback information of the active carrier and the number of aggregated/activated carriers; or

Determining, by the ACK/NACK indication information, the number of ACK/NACK feedback information bits or the total number of downlink transmissions corresponding to the total number of downlink transmissions indicated in the downlink control channel corresponding to the ACK/NACK feedback information;

If the ACK/NACK indication information indicates the total number of bits of the ACK/NACK feedback information on the carrier in the aggregated/activated carrier or the terminal is on each carrier in the aggregate/activated carrier The total number of downlink transmissions corresponding to the ACK/NACK feedback information, and the second receiving module is specifically configured to:

Determining that the ACK/NACK indication information includes indication information corresponding to each aggregation/activation carrier of the terminal, and indication information corresponding to an aggregation/activation carrier of the terminal indicates ACK/NACK feedback of one aggregation/activation carrier The number of bits of the information, or the indication information corresponding to an aggregate/activated carrier of the terminal, indicates the total number of downlink transmissions corresponding to the ACK/NACK feedback information of the one aggregated/activated carrier; or

Determining that the ACK/NACK indication information includes indication information corresponding to each aggregation/activation carrier of the terminal, and indication information corresponding to an aggregation/activation carrier of the terminal indicates multiple pre-defined or high-level signaling pre-configured a value of the number of bits of the ACK/NACK feedback information of the ACK/NACK feedback information of the ACK/NACK feedback information, or an indication message corresponding to an aggregate/activated carrier of the terminal, indicating a predefined Or a value of not less than a total of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of the one aggregated/activated carrier.

In a possible implementation manner, the second receiving module is specifically configured to: determine that the terminal generates ACK/NACK feedback information according to the following manner: the terminal corresponds to downlink transmission that feeds back ACK/NACK feedback information at the same time The downlink allocation index DAI generates ACK/NACK feedback information; or the terminal generates an ACK according to a transmission time interval TTI number and/or a process number and/or a carrier number of a downlink transmission that feeds back ACK/NACK feedback information at the same time. NACK feedback information.

In a possible implementation manner, when the base station determines that the ACK/NACK indication information indicates that the number of bits of the multiple ACK/NACK feedback information pre-configured by the predefined or higher layer signaling is not less than the ACK/NACK feedback signal, a value of the number of bits of the information, or the ACK/NACK indication information indicating that the total number of downlink transmissions corresponding to the ACK/NACK feedback information is not smaller than the total number of downlink transmissions pre-configured by the predefined or higher layer signaling. The second receiving module is specifically configured to: determine that the terminal generates ACK/NACK feedback information according to the following manner:

When the base station determines that the ACK/NACK indication information indicates a product of a maximum number of bits of ACK/NACK feedback information of each aggregate/activated carrier and a number of aggregated/activated carriers, or the ACK/NACK indication information When the product of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of each aggregation/activation carrier is multiplied by the number of aggregation/activation carriers, the second receiving module is specifically configured to: determine that the terminal is as follows The method generates ACK/NACK feedback information:

When the eNB determines that the ACK/NACK indication information includes indication information corresponding to each aggregation/activation carrier of the terminal, the indication information corresponding to an aggregation/activation carrier of the terminal indicates a pre-defined or high-layer signaling advance. One of the number of bits of the configured ACK/NACK feedback information is not less than a value of the number of bits of the ACK/NACK feedback information of the one aggregated/activated carrier, or an indication corresponding to an aggregate/activated carrier of the terminal The second receiving module is configured to indicate a value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of the one aggregation/activation carrier, which is not less than a value of the total number of downlink transmissions pre-configured by the pre-defined or high-layer signaling Specifically used for:

Determining that the terminal generates ACK/NACK feedback information as follows:

In a possible implementation manner, when there is an ACK/NACK feedback that is required for the physical downlink shared channel that does not have a corresponding downlink control channel, the second receiving module is specifically configured to: determine an ACK/NACK indicated by the ACK/NACK indication information. The physical downlink shared channel is included in the total number of bits including the number of bits of the ACK/ANCK feedback information of the physical downlink shared channel or the total number of downlink transmissions.

In a fifth aspect, the embodiment of the present application provides another terminal, including a processor, a memory, and a transceiver. The transceiver receives and transmits data under the control of the processor, and the preset program is saved in the memory, and the processor reads the memory. In the program, follow the procedure to perform the following process:

Determining ACK/NACK indication information, where the ACK/NACK indication information includes at least information for determining a number of bits of ACK/NACK feedback information transmitted by the terminal; and reporting, by the transceiver, the ACK/NACK indication information and The ACK/NACK feedback information corresponding to the ACK/NACK indication information.

In a possible implementation manner, if the ACK/NACK indication information and the ACK/NACK feedback information are transmitted in different channels, the processor determines a first channel resource used for transmitting the ACK/NACK indication information, and indicates sending and receiving. Transmitting the ACK/NACK indication information on the first channel resource;

Determining a second channel resource for transmitting the ACK/NACK feedback information, instructing the transceiver to transmit the ACK/NACK feedback information on the second channel resource, wherein the first channel resource and the second Channel resources are different.

In a possible implementation, the processor acquires the first channel resource that is pre-configured by the network side by using high layer signaling; Or acquiring a first channel resource set pre-configured by the network side by using the high layer signaling, and determining, according to the bit field in the downlink control channel, at least one first channel resource in the first channel resource set.

In a possible implementation, if the ACK/NACK indication information is used to indicate the total number of bits of the ACK/NACK feedback information reported by the terminal or the downlink corresponding to the ACK/NACK feedback information reported by the terminal The total number of transmissions, the processor is specifically used to:

Generating ACK/NACK feedback information for each aggregate/activated carrier, and multiplying the maximum number of bits of the ACK/NACK feedback information of each aggregate/activated carrier by the number of aggregated/activated carriers as the ACK/NACK The indication information, or the product of the maximum value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of each aggregation/activation carrier and the number of aggregated/activated carriers is used as the ACK/NACK indication information; or

Generate ACK/NACK feedback information for each aggregate/activated carrier, pre-configured in predefined or higher layer signaling One of the number of bits of the ACK/NACK feedback information is not less than a value of the number of bits of the ACK/NACK feedback information, as the indication information corresponding to the aggregate/activated carrier in the ACK/NACK indication information, or Selecting, in a plurality of downlink transmission totals pre-configured by the pre-defined or high-layer signaling, a value that is not less than a total number of downlink transmissions corresponding to the ACK/NACK feedback information, as a corresponding aggregation in the ACK/NACK indication information. / Activate the indication of the carrier.

In a possible implementation, the processor is specifically configured to: generate ACK/NACK feedback information according to a downlink allocation index DAI corresponding to downlink transmission that feeds back ACK/NACK feedback information at the same time; or feed back ACK/ at the same time. The transmission time interval TTI number and/or the process number and/or the carrier number of the downlink transmission of the NACK feedback information generates ACK/NACK feedback information.

In a possible implementation, the processor is specifically configured to:

In a possible implementation manner, when there is an ACK/NACK feedback that the physical downlink shared channel that does not have a corresponding downlink control channel needs to perform ACK/NACK feedback, the total number of ACK/NACK bits or downlinks indicated by the ACK/NACK indication information The total number of losses is increased by one.

In a sixth aspect, an embodiment of the present application provides a base station, including a processor, a memory, and a transceiver, where the transceiver receives and transmits data under the control of the processor, and the preset program is saved in the memory, and the processor reads the memory. The default program, according to the program to perform the following process:

Receiving, by the transceiver, the ACK/NACK indication information reported by the terminal, where the ACK/NACK indication information includes at least information for determining the number of bits of the ACK/NACK feedback information transmitted by the terminal; according to the ACK/NACK The indication information indicates that the transceiver receives the ACK/NACK feedback information reported by the terminal.

In a possible implementation, if the ACK/NACK indication information and the ACK/NACK feedback information are transmitted in different channels, the processor is specifically configured to:

Determining a first channel resource for transmitting the ACK/NACK indication information, instructing the transceiver to receive the ACK/NACK indication information on the first channel resource;

Determining a second channel resource for transmitting the ACK/NACK feedback information, instructing the transceiver to receive the ACK/NACK feedback information on the second channel resource, wherein the first channel resource and the second Channel resources are different.

In a possible implementation, the processor is specifically configured to: determine that the first channel resource is pre-configured to the terminal by the base station by using high layer signaling; or determine that the first channel resource is a downlink of the base station The bit field in the control channel indicates at least one first channel resource in the first channel resource set of the terminal, and the first channel resource set is pre-configured by the base station to the terminal by using high layer signaling.

Determining that the ACK/NACK indication information includes indication information corresponding to each aggregation/activation carrier of the terminal, and indication information corresponding to an aggregation/activation carrier of the terminal indicates ACK/NACK feedback of one aggregation/activation carrier The number of bits of the information or the indication information corresponding to an aggregate/activated carrier of the terminal indicates the total number of downlink transmissions corresponding to the ACK/NACK feedback information of the one aggregated/activated carrier; or

Determining that the ACK/NACK indication information includes indication information corresponding to each aggregation/activation carrier of the terminal, and indication information corresponding to an aggregation/activation carrier of the terminal indicates multiple pre-defined or high-level signaling pre-configured A value of the number of bits of the ACK/NACK feedback information of the ACK/NACK feedback information that is not less than the number of bits of the ACK/NACK feedback information of the one ACK/NACK feedback information or an indication message corresponding to an aggregate/activated carrier of the terminal indicates a pre-defined or The total number of downlink transmissions pre-configured by the high layer signaling is not less than a value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of the one aggregation/activation carrier.

In a possible implementation manner, the processor determines that the terminal generates ACK/NACK feedback information according to the following manner: the terminal generates an ACK according to a downlink allocation index DAI corresponding to a downlink transmission that feeds back ACK/NACK feedback information at the same time. NACK feedback information; or the terminal generates ACK/NACK feedback information according to a transmission time interval TTI number and/or a process number and/or a carrier number of a downlink transmission that feeds back ACK/NACK feedback information at the same time.

In a possible implementation manner, when the base station determines that the ACK/NACK indication information indicates that the ACK/NACK feedback information of the plurality of ACK/NACK feedback information pre-configured by the predefined or higher layer signaling is not smaller than the ACK/NACK feedback information. a value of the number of bits, or the ACK/NACK indication information indicating one of a plurality of downlink transmissions pre-configured by the predefined or higher layer signaling not less than a total number of downlink transmissions corresponding to the ACK/NACK feedback information At the time of the value, the processor determines that the terminal generates ACK/NACK feedback information as follows:

When the base station determines that the ACK/NACK indication information indicates a product of a maximum number of bits of ACK/NACK feedback information of each aggregate/activated carrier and a number of aggregated/activated carriers, or the ACK/NACK indication information When indicating the product of the maximum value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of each aggregation/activation carrier and the number of aggregation/activation carriers, the processor determines that the terminal generates ACK/NACK feedback information as follows:

When the eNB determines that the ACK/NACK indication information includes indication information corresponding to each aggregation/activation carrier of the terminal, the indication information corresponding to an aggregation/activation carrier of the terminal indicates a pre-defined or high-layer signaling advance. One of the number of bits of the configured ACK/NACK feedback information is not less than a value of the number of bits of the ACK/NACK feedback information of the one aggregated/activated carrier, or an indication corresponding to an aggregate/activated carrier of the terminal Determining, by the processor, the terminal, when the value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of the one aggregation/activation carrier is not less than a value of the total number of downlink transmissions pre-configured by the pre-defined or high-layer signaling Generate ACK/NACK feedback information as follows:

The sequence length of the ACK/NACK feedback information generated by the terminal according to the detected downlink transmission on an aggregate/activated carrier is smaller than the total ACK/NACK of the one aggregate/activated carrier indicated by the ACK/NACK indication information. The number of bits, or when the terminal detects a small number of downlink transmissions on an aggregate/activated carrier When the total number of downlink transmissions of the one aggregated/activated carrier indicated by the ACK/NACK indication information, the terminal supplements the NACK at the end of the sequence of the ACK/NACK feedback information of the one aggregated/activated carrier until the The sequence length of the ACK/NACK feedback information of an aggregate/activated carrier is equal to the total number of ACK/NACK bits of the one aggregate/activated carrier indicated by the ACK/NACK indication information or the ACK/NACK indication information The total number of ACK/NACK bits corresponding to the total number of downlink transmissions of the one aggregation/activation carrier.

In a possible implementation manner, when there is an ACK/NACK feedback that is required for the physical downlink shared channel that does not have a corresponding downlink control channel, the processor determines that the ACK/NACK total number of bits indicated by the ACK/NACK indication information includes the physical The physical downlink shared channel is included in the number of bits of the ACK/ANCK feedback information of the downlink shared channel or the total number of downlink transmissions.

Based on the foregoing technical solution, in the embodiment of the present application, the terminal reports ACK/NACK indication information and ACK/NACK feedback information corresponding to the ACK/NACK indication information, where the ACK/NACK indication information includes at least The information of the number of bits of the ACK/NACK feedback information can ensure that the number of ACK/NACK feedback bits is consistent between the terminal and the base station, ensuring correct resolution of the ACK/NACK, and avoiding downlink retransmission as much as possible.

DRAWINGS

Figure 1 is a schematic structural view of FS1;

2 is a schematic structural view of FS2;

FIG. 3 is a schematic flowchart of a method for performing ACK/NACK feedback information transmission on a terminal side according to an embodiment of the present disclosure;

4 is a schematic flowchart of a method for receiving ACK/NACK feedback information by a base station side in an embodiment of the present application;

5a is a schematic diagram of transmission of ACK/NACK indication information and ACK/NACK feedback information in the first embodiment of the present application;

FIG. 5b is a schematic diagram of another ACK/NACK indication information and ACK/NACK feedback information transmission in the first embodiment of the present application; FIG.

FIG. 5c is a schematic diagram of another ACK/NACK indication information and ACK/NACK feedback information transmission in the first embodiment of the present application;

6 is a schematic diagram of transmission of ACK/NACK indication information and ACK/NACK feedback information in a second embodiment of the present application;

7 is a schematic diagram of transmission of ACK/NACK indication information and ACK/NACK feedback information in a third embodiment of the present application;

FIG. 8 is a schematic structural diagram of a terminal in an embodiment of the present application;

9 is a schematic structural diagram of a base station in an embodiment of the present application;

FIG. 10 is a schematic structural diagram of another terminal in the embodiment of the present application;

FIG. 11 is a schematic structural diagram of another base station in the embodiment of the present application.

detailed description

The present invention will be further described in detail with reference to the accompanying drawings, in which FIG. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present application.

The core idea of the present application is that when the terminal reports the ACK/NACK feedback information, the terminal needs to additionally report the ACK/NACK indication information, where the ACK/NACK indication information includes at least the number of bits of the ACK/NACK feedback information transmitted by the terminal, and the additional reporting needs Obtained before the base station parses the ACK/NACK feedback information reported by the terminal.

It should be noted that the downlink transmission mentioned in the embodiment of the present application may be a short TTI (referred to as sTTI) transmission, or may be a traditional (ie, 1 ms) TTI transmission. A downlink control channel for the release of the S-sequences (SMS), indicating the downlink control channel for the downlink SPS resource activation, and the physical downlink shared channel (PDSCH) may be a short TTI transmission or a legacy ( That is 1ms) TTI transmission.

In the embodiment of the present application, as shown in FIG. 3, the detailed method for performing ACK/NACK feedback information transmission on the terminal side is as follows:

Step 301: The terminal determines ACK/NACK indication information, where the ACK/NACK indication information includes at least information for determining the number of bits of the ACK/NACK feedback information transmitted by the terminal.

In the embodiment of the present application, the ACK/NACK indication information is used to indicate the total number of bits of the ACK/NACK feedback information reported by the terminal or the total number of downlink transmissions corresponding to the ACK/NACK feedback information reported by the terminal; or the ACK/NACK indication information indication The total number of bits of ACK/NACK feedback information on each carrier in the aggregation/activation carrier or the total number of downlink transmissions corresponding to ACK/NACK feedback information on each carrier in the aggregation/activation carrier.

Specifically, if the ACK/NACK indication information is used to indicate the total number of bits of the ACK/NACK feedback information reported by the terminal or the total number of downlink transmissions corresponding to the ACK/NACK feedback information reported by the terminal, the terminal determines the ACK/NACK indication information, including but Not limited to the following methods:

In the method 1, the terminal generates ACK/NACK feedback information, uses the number of bits of the ACK/NACK feedback information as the ACK/NACK indication information, or uses the total number of downlink transmissions corresponding to the ACK/NACK feedback information as the ACK/NACK indication information.

Specifically, the total number of downlink transmissions may be specifically expressed as a total number of control channels and PDSCHs that indicate the release of downlink SPS resources, and may also include an SPS PDSCH; the total number of downlink transmissions and the total number of bits may be converted, for example, according to each downlink transmission. The transmission mode, whether spatial combining or the like determines the total number of bits of the ACK/NACK. The explanation of the total number of downlink transmissions in the following embodiments can be referred to herein, and will not be repeated.

In the method 2, the terminal generates ACK/NACK feedback information, and selects a value that is not less than the number of bits of the ACK/NACK feedback information in the number of bits of the plurality of ACK/NACK feedback information pre-configured in the pre-defined or high-layer signaling, as the ACK. The /NACK indication information, or a value of not less than the total number of downlink transmissions corresponding to the ACK/NACK feedback information, is selected as the ACK/NACK indication information among the plurality of downlink transmission totals pre-configured by the pre-defined or higher layer signaling.

Specifically, corresponding to method 2, when the sequence length of the ACK/NACK feedback information is less than the total number of ACK/NACK bits indicated by the ACK/NACK indication information, or when the total number of downlink transmissions corresponding to the ACK/NACK feedback information is less than ACK/ When the NACK indicates the total number of downlink transmissions indicated by the information, the terminal supplements the NACK at the end of the sequence of ACK/NACK feedback information until the sequence length of the ACK/NACK feedback information is equal to the total number of ACK/NACK bits or ACK indicated by the ACK/NACK indication information. /NACK indicates the total number of ACK/NACK bits corresponding to the total number of downlink transmissions indicated by the information.

Method 3: The terminal generates ACK/NACK feedback information for each aggregated (or activated) carrier, and sets the maximum value of the number of bits of the ACK/NACK feedback information of each aggregated (or activated) carrier to the aggregated (or activated) carrier. The product of the number is used as the ACK/NACK indication information, or the product of the maximum value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of each aggregated (or activated) carrier and the number of aggregated/activated carriers is used as an ACK/NACK indication. information.

Specifically, corresponding to method 3, when the number of bits of ACK/NACK feedback information of one aggregated (or activated) carrier is less than the maximum value of the number of bits of ACK/NACK feedback information of each aggregated (or activated) carrier, or when When the total number of downlink transmissions corresponding to the ACK/NACK feedback information of an aggregated (or activated) carrier is less than the maximum value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of each aggregated (or activated) carrier, the terminal is aggregated (or The sequence of the ACK/NACK feedback information of the active carrier is complemented by NACK until the sequence length of the ACK/NACK feedback information of the aggregated (or activated) carrier is equal to the number of bits of the ACK/NACK feedback information of each aggregated (or activated) carrier. The maximum value or the total number of ACK/NACK bits corresponding to the maximum value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of each aggregated (or activated) carrier.

Method 4, the terminal generates ACK/NACK feedback information, and uses the number of ACK/NACK feedback information bits corresponding to the total number of downlink transmissions indicated in the downlink control channel corresponding to the ACK/NACK feedback information as the ACK/NACK indication information, or The total number of downlink transmissions is used as the ACK/NACK indication information.

For example, each downlink control channel includes a T-DAI (Total Downlink Assignment Index), which is used to indicate the total number of downlink transmissions scheduled for all configured carriers to the current subframe/TTI. Each TTI on the carrier is a downlink transmission; for carrier aggregation, the T-DAIs on all carriers in the same time domain location (eg, subframe or TTI) are the same, and the T-DAIs in different time domain locations may be different. .

Specifically, if the ACK/NACK indication information indicates the total number of bits of the ACK/NACK feedback information of the terminal on each carrier in the aggregated (or activated) carrier or the ACK on each carrier in the aggregated/activated carrier of the terminal. The total number of downlink transmissions corresponding to the NACK feedback information, and the terminal determines the ACK/NACK indication information, including but not limited to the following Ways:

In the method 5, the terminal generates ACK/NACK feedback information for each aggregated (or activated) carrier, and uses the number of bits of the ACK/NACK feedback information of each aggregated (or activated) carrier as the corresponding aggregation in the ACK/NACK indication information ( Or activating the indication information of the carrier, or using the total number of downlink transmissions corresponding to the ACK/NACK feedback information of each aggregated (or activated) carrier as the indication information corresponding to the aggregated/activated carrier in the ACK/NACK indication information.

Method 6, the terminal generates ACK/NACK feedback information for each aggregated (or activated) carrier, and selects not less than ACK/NACK feedback information among the number of bits of the plurality of ACK/NACK feedback information pre-configured by the predefined or higher layer signaling. a value of the number of bits, as the indication information corresponding to the aggregated (or activated) carrier in the ACK/NACK indication information, or selecting not less than ACK/ among the total number of downlink transmissions pre-configured in the predefined or higher layer signaling. A value of the total number of downlink transmissions corresponding to the NACK feedback information, as the indication information corresponding to the aggregated (or activated) carrier in the ACK/NACK indication information.

Specifically, corresponding to method 6, when the sequence length of ACK/NACK feedback information of one aggregated (or activated) carrier is smaller than the total number of ACK/NACK bits of one aggregate/activated carrier indicated by the ACK/NACK indication information, or when When the total number of downlink transmissions corresponding to the ACK/NACK feedback information of an aggregated (or activated) carrier is smaller than the total number of downlink transmissions of one aggregated/activated carrier indicated by the ACK/NACK indication information, the terminal is in the aggregated (or activated) carrier of the one. The sequence of ACK/NACK feedback information is complemented with NACK until the sequence length of the ACK/NACK feedback information of the one aggregated (or activated) carrier is equal to the ACK/NACK of the one aggregated (or activated) carrier indicated by the ACK/NACK indication information. The total number of bits or the total number of ACK/NACK bits corresponding to the total number of downlink transmissions of the one aggregated (or activated) carrier indicated by the ACK/NACK indication information.

The terminal generates ACK/NACK feedback information, or the terminal generates ACK/NACK feedback information for each aggregated (or activated) carrier, including but not limited to the following two implementation manners:

In the first manner, the terminal generates ACK/NACK feedback information according to the DAI corresponding to the downlink transmission that feeds back the ACK/NACK feedback information at the same time.

Specifically, the downlink transmission that feeds back the ACK/NACK feedback information at the same time, including the received downlink transmission and the downlink transmission that can be determined according to the DAI, may be based on the DAI to sort the ACK/NACK, and determine the lost by the DAI. The packet generates a NACK for determining the location of the packet loss. The DAI is the counter. If only one aggregated carrier is used, it is the time domain counter, that is, the TTI is accumulated in the time domain. If multiple carriers are aggregated, the frequency domain can be the first frequency domain. The counter that is made after the time domain.

Specifically, the DAI can be further divided into C-DAI (Counter DAI, Counting Downstream Allocation Index) and T-DAI. The C-DAI has the DAI function described above, and the T-DAI is used to indicate the current subframe/ The total number of downlink transmissions scheduled total on all configured carriers up to TTI, so when the length of the ACK/NACK feedback information generated according to the C-DAI is less than the length indicated by the T-DAI, the NACK is supplemented thereafter.

In the second mode, the terminal transmits the TTI number of the downlink transmission of the ACK/NACK feedback information at the same time and/or Or the process number and/or the carrier number, generating ACK/NACK feedback information.

Specifically, each ACK/NACK feedback bit is sorted according to a TTI number and/or a process number and/or a carrier number, and each ACK/NACK feedback bit carries a corresponding TTI number and/or a process number and/or a carrier number, respectively. .

In the embodiment of the present application, when there is an ACK/NACK feedback that is required for the physical downlink control channel without the corresponding downlink control channel, the total number of ACK/NACK bits or the total number of downlink transmissions indicated by the ACK/NACK indication information is increased by one.

Specifically, when there is a physical downlink shared channel that does not have a corresponding downlink control channel, ACK/NACK feedback is required, and the ACK/NACK feedback information of the SPS PDSCH needs to be transmitted at the same time of the ACK/NACK feedback information transmission, and the ACK of the SPS PDSCH is required. The transmission time of the /NACK feedback information may be implicitly determined according to the feedback timing or determined according to the feedback delay indication field in the downlink control channel indicating the SPS resource activation; therefore, once the terminal is configured with the SPS service, it is always fixed. The location performs ACK/NACK feedback.

Specifically, when the ACK/NACK feedback sequence is generated, the SPS PDSCH is not considered, for example, according to the total number of downlink transmissions indicated by the T-DAI, and the total number of downlink transmissions indicated by the T-DAI only includes the indication of the downlink SPS resource release. The downlink control channel and the PDSCH with the corresponding downlink control channel, excluding the SPS PDSCH, need to increase the number of feedback information of the SPS PDSCH based on the total number of feedback information, usually 1 bit;

At this point, the ACK/NACK feedback information of the SPS PDSCH may be pre-arranged in the ACK/NACK feedback information sequence, for example, always at the forefront, or always at the end, or always ranked in the PCC ACK/ The front or the last of the NACK feedback information, as long as the rules agreed by the terminal and the base station are consistent, the position of the ACK/NACK feedback information of the SPS PDSCH can be correctly determined.

Step 302: The terminal reports ACK/NACK indication information and ACK/NACK feedback information corresponding to the ACK/NACK indication information.

In the embodiment of the present application, the terminal reports the ACK/NACK indication information and the ACK/NACK feedback information corresponding to the ACK/NACK indication information, including but not limited to the following manners:

In the first mode, the ACK/NACK indication information is transmitted in the same TTI as the ACK/NACK feedback information; or the ACK/NACK indication information is transmitted in the TTI leading to the ACK/NACK feedback information.

Specifically, when the ACK/NACK indication information is transmitted in the TTI ahead of the ACK/NACK feedback information, the TTI is pre-agreed, for example, transmitting an ACK in a neighboring TTI before transmitting the TTI of the ACK/NACK feedback information. /NACK indicates information.

In the second mode, the ACK/NACK indication information and the ACK/NACK feedback information are transmitted on the same channel or different channels.

In this mode, the same channel means that the channel format is the same and the channel resources are the same; different channels refer to any one of the channel format and the channel resource, for example, may be the same channel format, but use different channel resources, or Different channel formats are used and different channel resources are used.

In the embodiment of the present application, if the ACK/NACK indication information and the ACK/NACK feedback information are transmitted in the same channel, the ACK/NACK indication information and the ACK/NACK feedback information respectively occupy different time domains and frequency domains on the same channel. Resources are transmitted independently. For example, the ACK/NACK indication information is always mapped on a specific time domain and frequency domain resource of the channel, and the ACK/NACK indication information is independently encoded/scrambled/modulated and the like with respect to the ACK/NACK feedback information. Preferably, in order to ensure that the ACK/NACK indication information is parsed before the ACK/NACK feedback information, the ACK/NACK indication information is mapped to a position in the TTI in the time domain, for example, on the first symbol.

In this embodiment of the present application, if the ACK/NACK indication information and the ACK/NACK feedback information are transmitted in different channels, the terminal determines the first channel resource used for transmitting the ACK/NACK indication information, and transmits the ACK on the first channel resource. The NACK indicates information; the terminal determines a second channel resource for transmitting ACK/NACK feedback information, and transmits ACK/NACK feedback information on the second channel resource, where the first channel resource is different from the second channel resource.

In a specific implementation, the terminal determines the first channel resource used for transmitting the ACK/NACK indication information, including but not limited to the following two modes:

First, the terminal acquires a first channel resource that is pre-configured by the network side through high layer signaling;

Second, the terminal acquires a first channel resource set pre-configured by the network side through the high layer signaling, and determines at least one first channel resource in the first channel resource set according to the bit field in the downlink control channel. The high layer signaling may be Radio Resource Control (RRC) signaling.

In this embodiment of the present application, the channel format for transmitting the ACK/NACK indication information is the same as or different from the channel format for transmitting the ACK/NACK feedback information.

Specifically, if the ACK/NACK indication information is used to indicate the total number of bits of the ACK/NACK feedback information reported by the terminal, the terminal is based on the DAI value corresponding to the downlink transmission of the ACK/NACK feedback information transmitted at the same time. The NACK feedback information is sorted, and the NACK feedback information is generated by determining the location of the lost packet by the DAI. If the length of the ACK/NACK feedback information sequence generated according to the DAI value ranking is smaller than the total number of ACK/NACK feedback information, the ACK/NACK is The NACK is added to the end of the feedback information sequence until the length of the ACK/NACK feedback information sequence is equal to the total number of bits of the ACK/NACK feedback information, where the DAI value is a time domain counter; or

The terminal sorts the TTI number and/or the process ID corresponding to each ACK/NACK feedback bit, and each ACK/NACK feedback bit carries its corresponding TTI number and/or process number respectively, if the received downlink transmission ACK/ When the total number of bits of the ACK/NACK feedback information sequence composed of the NACK feedback bits is smaller than the total number of bits of the ACK/NACK feedback information, the NACK is added to the end of the ACK/NACK feedback information sequence until the length of the ACK/NACK feedback information sequence is equal to ACK/ The total number of bits of the NACK feedback information.

Specifically, if the ACK/NACK indication information indicates the total number of bits of the ACK/NACK feedback information of the terminal on each carrier in the aggregated carrier, the terminal separately transmits an ACK on the same time on each carrier. The DAI value corresponding to the downlink transmission of the /NACK feedback information sorts the ACK/NACK feedback information, and generates NACK feedback information for determining the location of the packet loss by using the DAI value, if the DAI value is sorted according to the DAI value. When the length of the ACK/NACK feedback information sequence is smaller than the total number of bits of the ACK/NACK feedback information, a NACK is added at the end of the ACK/NACK feedback information sequence as an ACK/NACK feedback information sequence of the carrier, where The DAI value is a time domain counter on each carrier; the ACK/NACK feedback information sequence of each carrier is cascaded to obtain the ACK/NACK feedback information; or

The terminal sorts based on a transmission time interval TTI number and/or a process number and/or a carrier number corresponding to each ACK/NACK feedback bit, and each ACK/NACK feedback bit carries a corresponding TTI number and/or a process number respectively. And/or a carrier number, if the total number of bits of the ACK/NACK feedback information sequence composed of the received downlink transmitted ACK/NACK feedback bits is smaller than the total number of bits of the ACK/NACK feedback information, the ACK/NACK The NACK is added to the end of the feedback information sequence until the length of the ACK/NACK feedback information sequence is equal to the total number of bits of the ACK/NACK feedback information.

Based on the same inventive concept, in the embodiment of the present application, as shown in FIG. 4, the detailed method for receiving the ACK/NACK feedback information by the base station side is as follows:

Step 401: The base station receives the ACK/NACK indication information reported by the terminal, where the ACK/NACK indication information includes at least information for determining the number of bits of the ACK/NACK feedback information transmitted by the terminal.

In the embodiment of the present application, if the ACK/NACK indication information is used to indicate the total number of bits of the ACK/NACK feedback information reported by the terminal or the total number of downlink transmissions corresponding to the ACK/NACK feedback information reported by the terminal, the base station according to the ACK/NACK indication information. The ACK/NACK feedback information reported by the receiving terminal is as follows:

The base station determines that the ACK/NACK indication information indicates the number of bits of the ACK/NACK feedback information, or the ACK/NACK indication information indicates the total number of downlink transmissions corresponding to the ACK/NACK feedback information; or

Determining, by the base station, that the ACK/NACK indication information indicates a value of not less than the number of bits of the ACK/NACK feedback information, or ACK/NACK, of the number of bits of the plurality of ACK/NACK feedback information pre-configured by the pre-defined or higher layer signaling. The indication information indicates a value of the total number of downlink transmissions corresponding to the total number of downlink transmissions corresponding to the ACK/NACK feedback information, which is a pre-defined or high-level signaling pre-configured, is ACK/NACK indication information; or

The base station determines that the ACK/NACK indication information indicates a product of the maximum number of bits of the ACK/NACK feedback information of each aggregated (or activated) carrier and the number of aggregated/activated carriers, or the ACK/NACK indication information indicates each aggregation ( Or activating) the product of the maximum number of downlink transmissions corresponding to the ACK/NACK feedback information of the carrier and the number of aggregated (or activated) carriers; or

The eNB determines that the ACK/NACK indication information indicates the number of ACK/NACK feedback information bits or the total number of downlink transmissions corresponding to the total number of downlink transmissions indicated in the downlink control channel corresponding to the ACK/NACK feedback information.

In this embodiment of the present application, if the ACK/NACK indication information indicates the total number of bits of the ACK/NACK feedback information on the carrier in the aggregated (or activated) carrier or the terminal is in each of the aggregated (or activated) carriers. The total number of downlink transmissions corresponding to the ACK/NACK feedback information on the carrier, and the base station receives the ACK/NACK feedback information reported by the terminal according to the ACK/NACK indication information, as follows:

Determining, by the base station, that the ACK/NACK indication information includes indication information of each aggregated (or activated) carrier of the corresponding terminal, and the indication information corresponding to an aggregated/activated carrier of the terminal indicates an ACK/NACK of the aggregated (or activated) carrier. The number of bits of the feedback information or the indication information corresponding to an aggregated (or activated) carrier of the terminal indicates the total number of downlink transmissions corresponding to the ACK/NACK feedback information of the one aggregated (or activated) carrier; or

Determining, by the base station, that the ACK/NACK indication information includes indication information corresponding to each aggregate/activated carrier of the terminal, and indication information corresponding to an aggregated (or activated) carrier of the terminal indicates pre-defined or high-layer signaling pre-configuration One of the number of bits of the plurality of ACK/NACK feedback information is not less than a value of the number of bits of the ACK/NACK feedback information of the one aggregated (or activated) carrier or corresponds to an aggregated (or activated) carrier of the terminal The indication information indicates a value of not less than a total number of downlink transmissions corresponding to the ACK/NACK feedback information of the one aggregated (or activated) carrier, among the plurality of downlink transmissions pre-configured by the predefined or higher layer signaling.

Step 402: The base station receives the ACK/NACK feedback information reported by the terminal according to the ACK/NACK indication information.

In the embodiment of the present application, the ACK/NACK indication information is transmitted in the same transmission time interval TTI as the ACK/NACK feedback information; or the ACK/NACK indication information is transmitted in the transmission time interval TTI ahead of the ACK/NACK feedback information.

In this embodiment of the present application, the ACK/NACK indication information and the ACK/NACK feedback information are transmitted on the same channel or different channels.

In a specific implementation manner, if the ACK/NACK indication information and the ACK/NACK feedback information are transmitted in the same channel, the ACK/NACK indication information and the ACK/NACK feedback information occupy different time domains and frequency domains on the same channel respectively. Resources are transmitted independently. Specifically, the channel format in which the ACK/NACK indication information is transmitted is the same as or different from the channel format in which the ACK/NACK feedback information is transmitted.

Specifically, if the ACK/NACK indication information and the ACK/NACK feedback information are transmitted in different channels, the base station determines a first channel resource for transmitting the ACK/NACK indication information, where the first channel is used. Receiving the ACK/NACK indication information on a resource; the base station determining a second channel resource for transmitting the ACK/NACK feedback information, and receiving the ACK/NACK feedback information on the second channel resource, where The first channel resource is different from the second channel resource.

The base station determines a first channel resource for transmitting the ACK/NACK indication information, including but not limited to the following manners:

Or the base station determines that the first channel resource is indicated by the bit field in the downlink control channel by the base station At least one first channel resource in the first channel resource set of the terminal, where the first channel resource set is pre-configured to the terminal by the base station by using high layer signaling.

In this embodiment of the present application, the base station determines that the terminal generates ACK/NACK feedback information according to the following manner:

The terminal generates ACK/NACK feedback information according to the transmission time interval TTI number and/or the process number and/or the carrier number of the downlink transmission that feeds back the ACK/NACK feedback information at the same time.

Specifically, when the base station determines that the ACK/NACK indication information indicates a number of bits of the ACK/NACK feedback information that is pre-configured by the predefined or higher layer signaling, the number of bits of the ACK/NACK feedback information is not less than the number of bits of the ACK/NACK feedback information. a value, or the ACK/NACK indication information indicates a value of not less than a total of the total number of downlink transmissions corresponding to the ACK/NACK feedback information, which is pre-defined or pre-configured by the high-level signaling, The base station determines that the terminal generates ACK/NACK feedback information as follows:

When the base station determines that the ACK/NACK indication information indicates a product of a maximum number of bits of ACK/NACK feedback information of each aggregate/activated carrier and a number of aggregated/activated carriers, or the ACK/NACK indication information When indicating the product of the maximum value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of each aggregation/activation carrier and the number of aggregation/activation carriers, the base station determines that the terminal generates ACK/NACK feedback information according to the following manner. :

When the eNB determines that the ACK/NACK indication information includes indication information corresponding to each aggregation/activation carrier of the terminal, the indication information corresponding to an aggregation/activation carrier of the terminal indicates a pre-defined or high-layer signaling advance. The number of bits of the configured multiple ACK/NACK feedback information is not less than that of the one aggregate/activated carrier A value of the number of bits of the ACK/NACK feedback information or indication information corresponding to an aggregate/activated carrier of the terminal indicates that the one of the plurality of downlink transmissions pre-configured by the predefined or higher layer signaling is not less than the one aggregation/ When a value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of the carrier is activated, the base station determines that the terminal generates ACK/NACK feedback information according to the following manner:

The sequence length of the ACK/NACK feedback information generated by the terminal according to the detected downlink transmission on an aggregate/activated carrier is smaller than the total ACK/NACK of the one aggregate/activated carrier indicated by the ACK/NACK indication information. When the number of bits, or when the total number of downlink transmissions detected by the terminal on one aggregate/activated carrier is smaller than the total number of downlink transmissions of the one aggregated/activated carrier indicated by the ACK/NACK indication information, the terminal is The sequence of ACK/NACK feedback information of the one aggregation/activation carrier is complemented with NACK until the sequence length of the ACK/NACK feedback information of the one aggregate/activated carrier is equal to the one indicated by the ACK/NACK indication information. The total number of ACK/NACK bits of the aggregated/activated carrier or the total number of ACK/NACK bits corresponding to the total number of downlink transmissions of the one aggregated/activated carrier indicated by the ACK/NACK indication information.

Specifically, when there is an ACK/NACK feedback that is required for the physical downlink shared channel that does not have a corresponding downlink control channel, the base station determines that the total number of ACK/NACK bits indicated by the ACK/NACK indication information includes the physical downlink sharing. The physical downlink shared channel is included in the number of bits of the ACK/ANCK feedback information of the channel or the total number of downlink transmissions.

The process of ACK/NACK transmission will be described in detail below through several specific embodiments.

First specific embodiment

The terminal only works on one carrier, and the base station side schedules a total of eight downlink short TTI transmissions to perform ACK/NACK feedback at the same time. The downlink control channel corresponding to each downlink short TTI transmission includes 2-bit DAI, and DAI is used as the DAI. The time domain counter (counter), the value exceeding 4 is indicated by the modulo 4 mode loop.

Specifically, when the terminal side receives the packet, the packet is dropped in the second downlink short TTI, but the continuous downlink DAI counter value is used to determine that there is a packet loss in the second downlink short TTI location, and a NACK is generated in the second downlink short TTI. As feedback information. The terminal loses the packet in the last downlink short TTI scheduled by the base station, and the terminal cannot determine whether there is a packet loss according to the previous scheduling information, the terminal receives the downlink short TTI, and determines the downlink short TTI of the packet loss, according to the transmission mode and Whether space combination determines ACK/NACK feedback information. For example, if each downlink short TTI transmission is a single codeword transmission, one bit of feedback information is generated for each downlink short TTI received and the downlink short TTI for determining packet loss, and are sorted according to the order of DAI counter, and 7 is obtained. The bit ACK/NACK feedback information is represented as o1, o2, ..., o7, and the terminal side considers that only 7 downlink short TTI transmissions need to perform ACK/NACK feedback.

Specifically, the terminal determines that the ACK/NACK indication information indicates the total number of bits of the ACK/NACK information transmitted by the terminal or the total number of downlink transmissions, and the total number may be the number actually detected by the terminal, or may be selected from the predetermined value. A value that is closest to the actual number and larger than the actual number, determines the ACK/NACK indication information as follows:

In the first implementation manner, the number of binary bits corresponding to the ACK/NACK indication information is pre-agreed, and the binary The number of bits is related to the range of the total number of bits of the ACK/NACK feedback information that the ACK/NACK indication information needs to indicate. For example, if the maximum number of ACK/NACK total bits or the total number of downlink transmissions does not exceed 16 bits, the ACK/ The NACK indication information is fixed to 4-bit information, and the total number of bits 1 to 16 or the total downlink transmission number and the 4-bit binary transmission sequence may be agreed, as shown in Table 3, thereby obtaining the total number of bits 7 or the total number of downlink transmissions. The corresponding binary transmission sequence of 7 is "0111", and it is also possible to directly convert 7 into a binary value. For example, it is required to perform binary conversion on 7-1=6, and complement 0 in the high position to obtain a 4-bit transmission sequence "0111"; The above 7-bit ACK/NACK feedback information is used as the actually transmitted ACK/NACK feedback information.

In the second implementation manner, it is assumed that the ACK/NACK indication information is always represented by using 2-bit binary information, and the multi-to-one relationship of modulo 4 is used for the total number of bits exceeding 4 or the total number of downlink transmissions, and the correspondence relationship is as shown in Table 4. Therefore, the binary transmission sequence "10" corresponding to the total number of bits 7 or the total downlink transmission number 7 can also be obtained; the terminal uses the above-mentioned 7-bit ACK/NACK feedback information as the actually transmitted ACK/ANCK feedback information.

In a third implementation manner, if a plurality of ACK/NACK total bit values or total downlink transmission values that can be indicated by the ACK/NACK indication information are predefined, the data may be used.

Bit ACK/NACK indicates information, A is the number of predefined values; for example, A values are defined in advance, for example, a1=4, a2=8, a3=1, a4=16, 2-bit ACK/NACK indication information, each The correspondence between the value and the 2-bit indication information is as shown in Table 5. In which a value that is closest to and larger than the number of ACK/NACK feedback bits or the total number of downlink transmissions is selected, a2=8 is selected to obtain a 2-bit ACK/NACK. The indication information is “01”; at this time, since the total number of ACK/NACK bits or the total number of downlink transmissions indicated by the ACK/NACK indication information is greater than the actual number of bits or the number of downlink transmissions, the 7-bit ACK generated above is required. The NACK feedback information o1, o2, ..., o7 is padded with 1 bit NACK at the end, and 8-bit ACK/NACK feedback information o1, o2, ..., o8 is obtained as the actually transmitted ACK/ANCK feedback information.

In this specific embodiment, the transmission manner of the ACK/NACK indication information includes but is not limited to the following two methods:

Method 1: ACK/NACK indication information and ACK/NACK feedback information are transmitted on the same channel resource.

For example, using the s PUCCH of the PUSCH-based transmission structure to transmit ACK/NACK indication information and ACK/NACK feedback information, assuming that the sPUCCH is transmitted using 7 symbols (eg, SC-FDMA symbols, the same below), and the ACK/NACK indication information is mapped to the first. On the symbol transmission, the ACK/NACK feedback information is mapped to the subsequent 6 symbols for transmission. As shown in FIG. 5a, if one RB transmission is occupied in the frequency domain of the sPUCCH, the 4-bit ACK/NACK indication information obtained in the first implementation manner or the 2-bit ACK/NACK obtained in the second or third implementation manner is obtained. The indication information is subjected to channel coding (repeating coding, RM coding, etc., or TBCC+CRC mode, if CRC is present, the coding information includes CRC bits, the same below) and modulation (for example, QPSK modulation, the same below). Maps to 12 REs in the frequency domain on the first symbol, and passes the 7-bit ACK/NACK feedback information in the first and second implementation manners or the 8-bit ACK/NACK feedback information in the third implementation manner through the channel. After coding and modulation, it is mapped to 12 REs in the frequency domain on the remaining 6 symbols, for example, the first time domain domain time domain mapping, or vice versa; the terminal sends ACK/NACK indication information simultaneously on the same sPUCCH in the sTTI. Against ACK/NACK For information, the channel resource of the sPUCCH, such as the RB location, may be pre-configured in the downlink control signaling or the higher layer signaling.

For another example, an sPUCCH transmission format based on a Constant Envelope Zero Auto-Corelation (CAZAC) sequence is used, wherein a CAZAC sequence on a partial symbol or a frequency domain resource is used to carry ACK/NACK indication information and ACK, respectively. One of the /NACK feedback messages.

Method 2: ACK/NACK indication information and ACK/NACK feedback information are transmitted on different channel resources.

For example, the ACK/NACK feedback information is transmitted using the s PUCCH of the PUSCH-based transmission structure. If the sPUCCH uses 7 symbol transmissions and the sPUCCH frequency domain occupies 1 resource block (Resource Block, RB) transmission, the first and second types are used. The 7-bit ACK/NACK feedback information in the implementation manner or the 8-bit ACK/NACK feedback information in the third implementation manner is channel-coded and modulated, and then mapped to 12 resource elements in the frequency domain on the 7 symbols of the sPUCCH ( On the Resource Element, RE), it can be the pre-frequency domain post-time domain mapping, or vice versa. The ACK/NACK indication information may also be transmitted by using the same transmission structure, and the symbol length may be the same as or different from the sPUCCH of the ACK/NACK feedback information transmission, for example, defined as 2 symbol lengths, and 1 RB transmission in the frequency domain, the above The 4-bit ACK/NACK indication information obtained in the first implementation manner or the 2-bit ACK/NACK indication information obtained in the second and third implementation manners are channel-coded and modulated, and then mapped to sPUCCH using 2 symbol lengths. The frequency domain is transmitted on 12 REs. The sPUCCH carrying the ACK/NACK feedback information and the sPUCCH carrying the ACK/NACK indication information may be transmitted in the same time domain location. For example, the 2 symbols occupied by the sPUCCH carrying the ACK/NACK indication information are aligned with the first two symbols of the 7 symbols occupied by the sPUCCH carrying the ACK/NACK feedback information, and occupy different frequency domain resources in the frequency domain (eg, RB) transmission, as shown in FIG. 5b, may also not overlap in the time domain, for example, the 2 symbols occupied by the sPUCCH carrying the ACK/NACK indication information are before the 7 symbols occupied by the sPUCCH carrying the ACK/NACK feedback information. Send, as shown in Figure 5c.

For another example, the ACK/NACK feedback information is transmitted using the sPUCCH of the PUSCH-based transmission structure, and the specific procedure is the same as above. The ACK/NACK indication information adopts the transmission structure of the CAZAC sequence, and is assumed to be transmitted using 2 symbol lengths, and the frequency domain occupies 1 RB. The 4-bit ACK/NACK indication information obtained in the first implementation is directly modulated to obtain two Quadrature Phase Shift Keying (QPSK) modulation symbols, which are respectively carried on different sPUCCH transmission symbols. Transmission, that is, the first QPSK modulation symbol is multiplied by the cyclically shifted CAZAC sequence, and then transmitted to the first symbol of the sPUCCH, and the second QPSK modulation symbol is multiplied by the cyclically shifted CAZAC sequence. The second QPSK modulation symbol is transmitted on the second symbol of the sPUCCH, or if the sPUCCH occupies two or more RB transmissions, and may be separately transmitted on different sPUCCH frequency domain resources, that is, the first QPSK modulation symbol and the cyclic shift After the CAZAC sequence is multiplied, it is mapped to the first RB of the sPUCCH, and the second QPSK modulation symbol is multiplied by the cyclically shifted CAZAC sequence, and then mapped to the second RB of the sPUCCH for transmission. The 2-bit ACK/NACK indication information obtained in the second and third implementation manners is directly modulated to obtain one QPSK modulation symbol, which is multiplied by the cyclically shifted CAZAC sequence and mapped to Each symbol and frequency domain resource of the sPUCCH is transmitted.

In the method 2, the ACK/NACK feedback information may also be transmitted by using the transmission structure of the CAZAC sequence. The specific manner is similar to the transmission of the ACK/NACK indication information, except that the original number of bits is different, and the number of QPSK modulation symbols obtained is different.

In this embodiment, the base station side receives and parses the ACK/NACK indication information according to the scheme corresponding to the terminal side, determines the total number of bits of the ACK/NACK feedback information according to the ACK/NACK indication information, and receives and parses according to the total number of bits. ACK/NACK feedback information, for the first and second implementation manners, determining that the total number of bits is 7 bits according to the ACK/NACK indication information, and receiving 7-bit ACK/NACK feedback information according to the 7-bit information, thereby determining that the terminal actually only The feedback information of the first 7 sTTIs is fed back, and the last sTTI terminal side packet loss, the base station determines the downlink short TTI that needs to be retransmitted according to the ACK/NACK information and the determined packet loss condition; for the third implementation manner, according to the ACK/NACK The indication information determines that the total number of bits is 8 bits, and the 8-bit ACK/NACK feedback information is received according to the 8-bit information. Although the base station cannot determine whether the terminal has lost packets at the end of the scheduling, the feedback information of the tail occupancy is NACK, and the base station does not need to Determining whether the packet is lost or not is processed according to the NACK, and the base station may extract the pair of received ACK/NACK feedback information according to the actual scheduling. The feedback information (ie, if the length of the ACK/NACK feedback information sequence exceeds the ACK/NACK corresponding to the downlink transmission actually scheduled by the base station, the tail feedback information is invalid and is not used). At this time, the base station actually schedules 8 For the downlink transmission, the 8-bit feedback information is considered to be valid information, and corresponds to 8 transmissions respectively. The base station determines the downlink short TTI that needs to be retransmitted according to the ACK/NACK information, wherein the 8th bit feedback information is NACK, although the base station cannot determine that the terminal is Whether the 8th transmission loses packets, but due to the placeholder NACK, the base station will retransmit the 8th transmission.

In Table 5, more predefined values can also be defined, and multiple values are multiplexed with the same binary state for indication. Wherein, the multiplexing indication manner of the ACK/NACK indication information shown in Table 4 (or when the plurality of values correspond to one binary state is also used in Table 5), because it is assumed that the terminal continuously loses 4 data packets is a minimum probability The event is therefore always assumed that the terminal does not continuously lose more than 4 data packets. Therefore, it is possible to determine which value the multiplexing indication value is based on the total number of data packets scheduled by the base station itself. For example, in the specific embodiment, the base station itself schedules 8 downlink short TTI transmissions and needs to perform ACK/NACK feedback at the same time. When the parsed ACK/NACK indication information is “10”, it can only be judged to be no more than 8 and not The value is less than 8-4=4, so it can only be the value of "7" corresponding to the "10" state. The following judgment principle of multi-correspondence is the same as here, and will not be described again.

Table 3 Correspondence between the total number of ACK/NACK total bits or downlink transmissions and 4-bit binary transmission information

Table 4 Correspondence between the total number of ACK/NACK total bits or downlink transmissions and 2-bit binary transmission information

Table 5 Correspondence between the total number of ACK/NACK total bits or downlink transmissions and 2-bit binary transmission information

Second specific embodiment

As shown in FIG. 6, the terminal is in a carrier aggregation mode, and it is assumed that the operation is on two carriers, and the base station side schedules a total of four downlink short TTI transmissions on carrier 1 to perform ACK/NACK feedback at the same time, assuming each downlink. The short TTIs have the same length, all of which are 7 symbols. The base station schedules a total of 8 downlink short TTI transmissions on carrier 2 to perform ACK/NACK feedback at the same time as 4 downlink short TTI transmissions on carrier 1, assuming each The downlink short TTIs have the same length and are 2 symbols. The downlink control channel corresponding to each downlink short TTI transmission includes a 2-bit DAI, and the DAI is used as the time domain counter. The value exceeding 4 is cyclically indicated by the modulo-4 mode.

In this specific embodiment, the process of receiving by the terminal is as follows:

The second downlink short TTI packet on the carrier 1 is lost, but the continuous DAI counter value can be used to determine that there is a packet loss in the second downlink short TTI position on the carrier 1, and a NACK is generated as the second downlink short TTI. Feedback. The terminal loses the last downlink short TTI scheduled by the base station on the carrier 1, and the terminal cannot determine whether there is packet loss later according to the previous scheduling information. The terminal determines the ACK/NACK feedback information according to the transmission mode and whether the spatial combination is the downlink short TTI received and the downlink short TTI for determining the packet loss. For example, if each downlink short TTI transmission is a single codeword transmission, one bit of feedback information is generated for each downlink short TTI received and the downlink short TTI for determining packet loss, and are sorted according to the order of DAI counter, and 3 is obtained. Bit ACK/NACK feedback information o1, 1, o1, 2, o1, 3, the terminal side considers that only three downlink short TTI transmissions on carrier 1 require ACK/NACK feedback.

The last two downlink short TTIs that are scheduled by the base station on the carrier 2 are lost, and the terminal cannot determine whether there is a packet loss according to the previous scheduling information, and the terminal determines the ACK/ according to the transmission mode and whether the space is combined. NACK feedback information. For example, if each downlink short TTI transmission is a single codeword transmission, one bit of feedback information is generated for each downlink short TTI received, and is sorted according to the order of DAI counter, and 2-bit ACK/NACK feedback information o2 is obtained. 1,2,2...o2,6, the terminal side believes that only 6 downlink short TTI transmissions on carrier 2 need to perform ACK/NACK feedback.

Specifically, the terminal determines the ACK/NACK indication information and the ACK/ANCK feedback information, including but not limited to the following methods:

Method A: The terminal determines that the ACK/NACK indication information includes multiple indication fields, and each indication field is used to indicate the total number of bits of ACK/NACK feedback information of one carrier or the total number of downlink transmissions of one carrier, and the total number may be The number of the ACK/NACK indication information that is determined by the terminal to be the closest to the actual number is greater than the actual number. Specifically, the specific implementation manner of determining the ACK/NACK indication information by the terminal includes but is not limited to the following :

The first implementation manner is similar to the first implementation manner in the first embodiment. It is assumed that each carrier corresponds to 4-bit ACK/NACK indication information, and the first ACK/NACK indication information indication field is used to indicate carrier 1 3 bits ACK/NACK total feedback bit number or 3 total downlink transmission numbers, and the second ACK/NACK indication information indication field is used to indicate the number of 6-bit ACK/NACK total feedback bits of carrier 2 or 6 total downlink transmission numbers. The first ACK/NACK indication information is corresponding to “0010” and the second ACK/NACK is obtained by first converting the first ACK/NACK indication information and the second ACK/NACK indication information according to Table 3 or directly converting into 4-bit binary information. The indication information corresponds to “0101”, and the first and second ACK/NACK indication information are cascaded together as 8-bit transmission information “00100101” corresponding to the ACK/NACK indication information; the terminal ACK/ of carrier 1 and carrier 2 The NACK feedback information is cascaded together to obtain 9-bit ACK/NACK feedback information o1, 1, o1, 2, o1, 3, o2, 1, o2, 2...o2, 6 as actual transmitted ACK/NACK feedback information;

The second implementation manner is similar to the second implementation manner of the first embodiment. It is assumed that each carrier corresponds to 2-bit ACK/NACK indication information, and the first ACK/NACK indication information indication field is used to indicate 3 bits of carrier 1. ACK/NACK total feedback bit number or 3 total downlink transmission numbers, and the second ACK/NACK indication information indication field is used to indicate the number of 6-bit ACK/NACK total feedback bits of carrier 2 or 6 total downlink transmission numbers. According to Table 4, the first ACK/NACK indication information is corresponding to "10", the second ACK/NACK indication information is corresponding to "01", and the first and second ACK/NACK indication information are cascaded together as ACK/NACK. The 4-bit transmission information "1001" corresponding to the indication information; the terminal cascades the ACK/NACK feedback information of the carrier 1 and the carrier 2 to obtain 9-bit ACK/NACK feedback information o1, 1, o1, 2, o1, 3 , o2, 1, o2, 2...o2, 6 as the actual transmitted ACK/NACK feedback information;

The third implementation manner is similar to the third implementation manner of the first embodiment. It is assumed that each carrier corresponds to 2-bit ACK/NACK indication information, and the actual 3-bit ACK/NACK total feedback bits of carrier 1 or three The total number of downlink transmissions is selected as a2=8 as ACK/NACK indication information, and the actual 6-bit ACK/NACK total feedback bits of carrier 2 or the total number of 6 downlink transmissions are selected as a ACK/NACK indication information, according to Table 5, the first ACK/NACK indication information is corresponding to "01", the second ACK/NACK indication information is corresponding to "01", and the first and second ACK/NACK indication information are cascaded together as an ACK/NACK indication. The 4-bit transmission information "0101" corresponding to the information; at this time, since the total number of ACK/NACK bits or the total downlink transmission number of the carrier 1 indicated by the ACK/NACK indication information is larger than the actual number of bits or the number of downlink transmissions, it is required The 5-bit ACK/NACK feedback information o1,1,o1,2, o1,3 of the carrier 1 is complemented by 5 bits of NACK, and the 8-bit ACK/NACK feedback information of the actual transmission of the carrier 1 is obtained. Bit ACK/NACK feedback information o2, 1, o2, 2...o2, 6 end 2 bits NACK, The 8-bit ACK/NACK feedback information of the actual transmission to the carrier 2 is cascaded together with the 8-bit ACK/NACK feedback information of the actual transmission after the carrier 1 and the carrier 2 are supplemented with the NACK, as the 16-bit ACK actually transmitted by the terminal. NACK feedback information.

Method B: The terminal determines that the ACK/NACK indication information is used to indicate the total number of bits of the ACK/NACK feedback information of each carrier or the maximum value of the total downlink transmission number A*N=12 bits, A=max(3,6) =6, N=2 is the number of aggregated carriers; the terminal determines the actual number of ACK/NACK feedback bits corresponding to each carrier A=max(3,6)=6, for carrier 1 The ACK/NACK feedback information is supplemented with the ACK/NACK feedback information of the carrier 2 after supplementing the 3-bit NACK as the 12-bit ACK/NACK feedback information of the terminal o1, 1, o1, 2, o1, 3, NACK, NACK , NACK, o2, 1, o2, 2...o2, 6; Specifically, the specific implementation manner of determining the ACK/NACK indication information by the terminal includes but is not limited to the following three types:

The first implementation manner is similar to the first implementation manner of the first specific embodiment, and the 4-bit transmission information “1011” corresponding to the ACK/NACK indication information is obtained according to Table 3 or directly converted into 4-bit binary information; The above 12-bit ACK/NACK feedback information o1, 1, o1, 2, o1, 3, NACK, NACK, NACK, o2, 1, o2, 2...o2, 6 is taken as the actually transmitted ACK/NACK feedback information;

The second implementation manner is similar to the second implementation manner of the first specific embodiment. According to Table 4, the 2-bit transmission information “11” corresponding to the ACK/NACK indication information is obtained; the terminal sends the 12-bit ACK/NACK feedback information o1. , 1, o1, 2, o1, 3, NACK, NACK, NACK, o2, 1, o2, 2...o2, 6 as the actual transmitted ACK/NACK feedback information.

Corresponding to Method A, the transmission mode of the ACK/NACK indication information is processed according to a specific procedure similar to Method 1 and Method 2 in the first embodiment, the only difference being the number of bits of the ACK/NACK feedback information sequence and ACK/ The number of transmission bits of the NACK indication information is different from the specific content.

Corresponding to the method B, the transmission mode of the ACK/NACK indication information is processed in a specific procedure similar to the method 1 and the method 2 in the first embodiment, the only difference being that the number of bits of the ACK/NACK feedback information sequence is different.

In this embodiment, the base station side receives and parses the ACK/NACK indication information according to the scheme corresponding to the terminal side, and the total number of bits obtained according to the ACK/NACK indication information (if the total downlink transmission number is indicated, according to the downlink The number of transmissions, the transmission mode, whether space combining determines the total number of bits, and receiving and parsing the ACK/NACK feedback information. details as follows:

Corresponding to Method A: 8 bits (corresponding to the first implementation) or 4 bits (corresponding to the second and third implementations) ACK/NACK indications to be received according to the corresponding transmission scheme (the transmission scheme in which the terminal is consistent with the base station) The information is divided into two parts according to the order of the preceding and succeeding, and the total number of ACK/NACK bits of the actual transmission of each carrier is obtained respectively. Specifically, for the first and second implementation manners, the ACK/NACK of the carrier 1 is obtained according to the first partial information. If the total number of bits or the total number of downlink transmissions is 3, the base station determines the last downlink short TTI packet loss of the terminal on carrier 1, and obtains the total number of ACK/NACK bits or the total downlink transmission number of carrier 2 according to the second partial information. The base station determines the last two downlink short TTI packet loss of the terminal on the carrier 2; the base station determines that the total number of ACK/NACK feedback information or the total downlink transmission number of the two carriers transmitted by the terminal is 3+6=9, according to 9 The bit receives and parses the ACK/NACK feedback information, determines that the first 3 bits of ACK/NACK feedback information correspond to the first 3 downlink short TTI transmissions on carrier 1, and determines the 6-bit ACK/NACK feedback information corresponding to the first 6 downlinks on carrier 2. Short TTI transmission, according to AC The K/NACK information and the foregoing determining the packet loss situation determine the downlink short TTI that needs to be retransmitted; for the third implementation manner, the base station cannot obtain the total number of ACK/NACK bits or the total downlink transmission number of the carrier 1 according to the first part information. Judging the terminal on carrier 1 The last packet loss situation, and since the base station only schedules 4 downlink transmissions on carrier 1, the base station determines that only the first 4 bits of the ACK/NACK feedback information of carrier 1 are valid, and the rest are occupied; according to the second part information The total number of ACK/NACK bits or the total number of downlink transmissions of carrier 2 is 8, and the base station cannot judge the last packet loss condition of the terminal on carrier 2. Since the base station schedules 8 downlink transmissions on carrier 2, the base station determines carrier 2 The ACK/NACK feedback information is valid (that is, the NACK placeholder information generated by the terminal is also used as feedback information. The downlink transmission corresponding to the placeholder information either drops the packet itself or does not exist by itself, so it does not affect the correct correspondence of ACK/NACK. The base station determines that the total number of ACK/NACK feedback information or the total downlink transmission number of the two carriers transmitted by the terminal is 8+8=16, and receives and parses the ACK/NACK feedback information according to 16 bits, and determines the first 8 bits of ACK/NACK. The feedback information corresponds to carrier 1, and only the first 4 bits are taken as effective ACK/NACK feedback information, corresponding to 4 downlink transmissions on carrier 1, respectively, and it is determined according to the corresponding ACK/NACK information whether retransmission is needed, because the fourth ratio The feedback information is NACK. Although the base station cannot judge whether the packet is lost at the end, the fourth transmission will be retransmitted. The 8 bits of ACK/NACK feedback information corresponding to carrier 2 are determined, and 8 bits are considered valid, respectively corresponding to carrier 2 8 downlink short TTI transmissions, determining whether retransmission is required according to the corresponding ACK/NACK information. Since the 7th and 8th bit feedback information is NACK, although the base station cannot judge whether the packet is lost last, the 7th and 8th transmissions are retransmitted. .

Corresponding to method B: receiving 4 bits (corresponding to the first implementation manner) or 2 bits (corresponding to the second implementation manner) ACK/NACK indication information according to the corresponding transmission scheme (the transmission scheme consistent by the terminal and the base station), thereby obtaining The total number of ACK/NACK bits is 12. According to the principle that the actual number of ACK/NACK feedback information of each carrier is the same, it is determined that the terminal feeds back 6-bit ACK/NACK feedback information for each carrier, and receives and parses according to 12 bits. The ACK/NACK feedback information determines that the first 6 bits are the feedback information of carrier 1, and the last 6 bits are the feedback information of carrier 2. For carrier 1, since the base station actually only schedules 4 downlink short TTI transmissions, it is determined that the last 2 bits are the placeholder information, which does not work. Since the terminal loses packets in the last downlink short TTI, the downlink short TTI corresponds to The NACK information of the bit, therefore, although the base station cannot determine the downlink short TTI packet loss, the downlink short TTI is retransmitted. For carrier 2, since the base station actually schedules 8 downlink short TTI transmissions, it is determined that the last 2 downlink short TTIs are lost. The base station determines the downlink short TTI that needs to be retransmitted according to the ACK/NACK information and the judgment of the packet loss situation.

Third specific embodiment

As shown in FIG. 7 , the terminal is in a carrier aggregation mode, and it is assumed that the operation is on 6 carriers, and the short TTI transmission scheduled by the base station side on each carrier to perform ACK/NACK feedback at the same time is shown in FIG. 7 . Assume that each downlink short TTI has the same length and is 7 symbols. Each downlink short TTI transmission is a single codeword transmission, and each downlink short TTI transmission corresponds to a downlink control channel including a 2-bit C-DAI. And 2-bit T-DAI, C-DAI as the counter in the time domain of the pre-frequency domain, T-DAI indicates the total number of TTIs scheduled on all carriers up to the current short TTI, and the values of C-DAI and T-DAI exceed 4. The modulo 4 mode cycle indication is used, as shown in Table 6 below.

Table 6C-DAI and T-DAI values

The downlink transmission is received on each carrier and the short TTI. The specific receiving situation is as shown in FIG. 7. According to the C-DAI, it can be determined that there is packet loss in the second downlink short TTI position on the

carriers

1, 4, according to the first sTTI. The T-DAI=2 can determine that a total of six downlink transmissions are scheduled on all carriers in the first sTTI, and the total is on all carriers according to the T-DAI value in the second sTTI and the second TTI. The number of received downlink transmissions can be determined by T-DAI=3, which indicates that a total of 11 downlink transmissions are scheduled. Therefore, it can be determined that there is a packet loss in the second sTTI on the carrier 6, and a NACK is generated as the feedback information on the packet loss location; However, since the terminal does not receive any downlink transmission in the third sTTI, it cannot be determined that carrier 1 and carrier 2 are lost on the third sTTI, and thus cannot be indicated by the last T-DAI=1 actually scheduled by the base station. The total number of downlink transmissions is 13 to determine the number of bits of the feedback information; therefore, the terminal generates 11-bit ACK/NACK feedback information, ACK/NACK feedback information according to the detected C-DAI and T-DAI, including determining the location of the packet loss. Sorted in ascending order of C-DAI, ie The feedback information of the sTTI carrier 1, the feedback information of the first sTTI carrier 2, the feedback information of the first sTTI carrier 6, the feedback information of the second sTTI carrier 1, the feedback information of the second sTTI carrier 3, ... The feedback information of the second sTTI carrier 6; the terminal side considers that only the above 11 downlink short TTI transmissions need to perform ACK/NACK feedback.

The ACK/NACK indication information indicates the total number of ACK/NACK feedback bits transmitted by the terminal or the total number of detected downlink transmissions or the value of the last detected T-DAI or the ACK determined according to the detected last T-DAI. /NACK total number of feedback information, determining that the ACK/NACK indication information indicates the total number of bits of the ACK/NACK information transmitted by the terminal or the total number of downlink transmissions, and the total number may be the number actually detected by the terminal, or may be selected from the predetermined value. A value that is closest to the actual quantity and larger than the actual quantity. The specific implementation is as follows:

The first implementation manner is similar to the first implementation manner of the first embodiment, and the number of binary bits corresponding to the ACK/NACK indication information is pre-agreed. As shown in Table 3, the table 3 is looked up to obtain the total bits actually generated. Number 11 The binary transmission sequence corresponding to the total downlink transmission number 11 indicated by the total downlink transmission number 11 or the last T-DAI value or the total ACK/ANCK feedback bit number 11 determined by the last T-DAI of the pattern is "1010", you can also directly convert 11 to 1 and then convert to a binary value, and fill 0 in the high position to get a 4-bit transmission sequence "1010".

The second implementation manner is similar to the second implementation manner of the first embodiment. It is assumed that the ACK/NACK indication information is always represented by using 2-bit binary information, as shown in Table 4, thereby obtaining the total number of bits actually generated. Or the total downlink transmission number 11 indicated by the total downlink transmission number 11 or the last T-DAI value or the binary transmission sequence corresponding to the total ACK/ANCK feedback bit number 11 determined by the last T-DAI of the pattern. 10", or the T-DAI value or the binary state can be directly used as the ACK/NACK indication information (because the T-DAI is defined in the same manner as Table 4).

The third implementation manner is similar to the third implementation manner of the first specific embodiment, and a plurality of ACK/NACK total bit values or total downlink transmission values that can be indicated by the ACK/NACK indication information are predefined, as shown in Table 5. Selecting one of the total number of bits 11 that is closest to and greater than the above-mentioned actual generated total number of bits 11 or the total number of downlink transmissions 11 or the last T-DAI value indicated by the last T-DAI value is determined by the T-DAI of the last pattern of the pattern. For the value of the total ACK/ANCK feedback bit number 11, a3=12 is selected, and the 2-bit ACK/NACK indication information is obtained as "10". At this time, since the total number of ACK/NACK bits or the total number of downlink transmissions indicated by the ACK/NACK indication information is greater than the actual number of bits or the number of downlink transmissions, it is necessary to supplement the end of the 11-bit ACK/NACK feedback information generated above. The bit NACK obtains 12-bit ACK/NACK feedback information as ACK/NACK feedback information actually transmitted by the terminal.

The transmission manner of the ACK/NACK indication information is processed according to a specific procedure similar to the method 1 and the method 2 in the first embodiment, the only difference being the number of bits of the ACK/NACK feedback information sequence and the specificity of the ACK/NACK indication information. The content is different.

In this embodiment, the base station side receives and parses the ACK/NACK indication information according to the scheme corresponding to the terminal side, determines the total number of bits of the ACK/NACK feedback information according to the ACK/NACK indication information, and receives and parses according to the total number of bits. ACK/NACK feedback information, for the first and second implementation manners, determining that the total number of bits is 11 bits according to the ACK/NACK indication information, and receiving 11-bit ACK/NACK feedback information according to the 11-bit information, thereby determining that the terminal actually only The feedback information of the first 11 sTTIs is fed back, and the last two sTTI terminal side packet loss, the base station determines the downlink short TTI that needs to be retransmitted according to the ACK/NACK information and the determined packet loss situation; for the third implementation manner, according to the ACK/ The NACK indication information determines that the total number of bits is 12 bits, and receives 12-bit ACK/NACK feedback information according to the 12-bit information, since the base station actually schedules 13 downlink transmissions, and if the terminal receives on any carrier in the last sTTI A downlink transmission can determine that the total number of downlink transmissions is 13 according to the T-DAI, but since the terminal feeds back 12 downlink transmissions, Station may be determined in the last two sTTI downlink transmission loss, for the remaining downlink transmission, based on the received corresponding ACK / ANCK determines whether the feedback information retransmission.

In the above three specific embodiments, only one RB is occupied by the sPUCCH frequency domain, and the sPUCCH frequency domain is occupied. The sPUCCH can also use other symbol lengths different from those in the foregoing specific embodiments, and the details of the sPUCCH are different.

The above three specific embodiments are applicable to both FDD and TDD systems. If the system is an FDD system, the downlink sTTI transmission and the uplink s PUCCH feedback are performed on different frequency domain resources. If the TDD system is used, the downlink sTTI transmission and the uplink s PUCCH feedback are time division multiplexed on the same frequency domain resource (TDM, Time Division). Multiplexing). In the above two specific embodiments, the downlink sTTI on each carrier is only one sTTI length, and the ACK/NACK feedback information of the downlink transmission of different sTTI lengths is fed back in the same sPUCCH, and the processing manner is the same as above. .

In the above three specific embodiments, only the following short TTI single codeword transmission is taken as an example. If multi-codeword transmission is used and spatial combining is not used, each downlink short TTI corresponds to 2-bit ACK/NACK feedback information, which corresponds to each transport block. If multi-codeword transmission is used and spatial combining is used, each downlink short TTI corresponds to 1-bit ACK/NACK feedback information, and a logical AND result is obtained for the feedback information of each transport block. If each ACK/NACK feedback information carries a timestamp, such as a subframe/TTI number, a carrier number, a process number, etc., an ACK/NACK sequence may be generated according to a timestamp order, and the ACK/NACK generated according to the DAI counter order may be replaced. Sequence, the same as other processes;

In the above three specific embodiments, only the case that each downlink transmission is a single codeword is taken as an example, so the ACK/NACK indication information indicates that the total number of ACK/NACK bits and the total number of downlink transmissions are the same in value; If the downlink transmission or the partial downlink transmission is a multi-codeword and does not use spatial merging, if the ACK/NACK indication information indicates that the total downlink transmission number is smaller than the total number of ACK/NACK bits, it may be determined according to a specific detection situation. (that is, the number of downlink transmissions actually received and the number of lost packets) determine the total number of downlink transmissions, and then obtain ACK/NACK indication information according to the corresponding table, and the total number of ACK/NACK bits is based on each downlink transmission. The number of indicated transport blocks and whether or not spatial combination is determined. If two transport blocks are supported and spatial combining is not used, each downlink transmission corresponds to 2-bit ACK/NACK feedback information, if two transport blocks are supported and space combining is used Then, each downlink transmission corresponds to 1-bit ACK/NACK feedback information, and the 1-bit information is obtained by logically sumping ACK/NACK feedback information of two transport blocks.

Based on the same inventive concept, a terminal is also provided in the embodiment of the present application. For the specific implementation of the terminal, refer to the description of the method embodiment. The repeated description is not repeated. As shown in FIG. 8 , the terminal mainly includes:

The processing module 801 is configured to determine ACK/NACK indication information, where the ACK/NACK indication information includes at least information for determining ACK/NACK feedback information transmitted by the terminal;

The reporting module 802 is configured to report the ACK/NACK indication information and the ACK/NACK feedback information corresponding to the ACK/NACK indication information.

In a possible implementation manner, the ACK/NACK indication information is transmitted in the same transmission time interval TTI as the ACK/NACK feedback information;

Or the ACK/NACK indication information is ahead of the sending interval of the ACK/NACK feedback information. Transfer in TTI.

In a possible implementation, if the ACK/NACK indication information and the ACK/NACK feedback information are transmitted in different channels, the reporting module is specifically configured to:

Determining a first channel resource for transmitting the ACK/NACK indication information, and transmitting the ACK/NACK indication information on the first channel resource;

Determining a second channel resource for transmitting the ACK/NACK feedback information, transmitting the ACK/NACK feedback information on the second channel resource, where the first channel resource and the second channel resource are not the same.

In a possible implementation manner, the reporting module is specifically configured to:

Obtaining, by the network side, the first channel resource pre-configured by high layer signaling;

Or acquiring a first channel resource set pre-configured by the network side by using the high layer signaling, and determining, according to the bit field in the downlink control channel, at least one first channel resource in the first channel resource set.

Generating ACK/NACK feedback information, and selecting, as the ACK, a value that is not less than the number of bits of the ACK/NACK feedback information among the number of bits of the plurality of ACK/NACK feedback information pre-configured by the pre-defined or higher layer signaling /NACK indication information, or select not among the total number of downlink transmissions pre-configured by pre-defined or high-level signaling a value smaller than the total number of downlink transmissions corresponding to the ACK/NACK feedback information, as the ACK/NACK indication information; or

Generating ACK/NACK feedback information for each aggregate/activated carrier, and using the product of the maximum value of the number of bits of the ACK/NACK feedback information of each aggregate/activated carrier and the number of aggregated/activated carriers as the ACK/NACK indication Information, or the product of the maximum value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of each aggregate/activated carrier and the number of aggregated/activated carriers is used as the ACK/NACK indication information; or

Generating ACK/NACK feedback information, using the number of ACK/NACK feedback information bits corresponding to the total number of downlink transmissions indicated in the downlink control channel corresponding to the ACK/NACK feedback information as the ACK/NACK indication information, or The total number of downlink transmissions is used as the ACK/NACK indication information;

Generating ACK/NACK feedback information for each aggregate/activated carrier, and using the number of bits of the ACK/NACK feedback information of each aggregate/activated carrier as the indication information corresponding to the aggregated/activated carrier in the ACK/NACK indication information, Or the total number of downlink transmissions corresponding to the ACK/NACK feedback information of each aggregation/activation carrier is used as the indication information corresponding to the aggregated/activated carrier in the ACK/NACK indication information; or

Generating ACK/NACK feedback information for each aggregate/activated carrier, and selecting a number of bits not less than the number of bits of the ACK/NACK feedback information among the number of bits of the plurality of ACK/NACK feedback information pre-configured by the predefined or higher layer signaling a value, as the indication information corresponding to the ACK/NACK indication information corresponding to the aggregation/activation carrier, or selecting not less than the ACK/NACK feedback among the total number of downlink transmissions pre-configured in the predefined or higher layer signaling A value of the total number of downlink transmissions corresponding to the information, as the indication information corresponding to the aggregation/activation carrier in the ACK/NACK indication information.

Generating ACK/NACK feedback information according to a downlink allocation index DAI corresponding to a downlink transmission that feeds back ACK/NACK feedback information at the same time; or

The ACK/NACK feedback information is generated according to the transmission time interval TTI number and/or the process number and/or the carrier number of the downlink transmission that feeds back the ACK/NACK feedback information at the same time.

When the sequence length of the ACK/NACK feedback information is smaller than the total number of ACK/NACK bits indicated by the ACK/NACK indication information, or when the total number of downlink transmissions corresponding to the ACK/NACK feedback information is smaller than the ACK/ When the NACK indicates the total number of downlink transmissions indicated by the information, the NACK is added to the end of the sequence of the ACK/NACK feedback information until the sequence length of the ACK/NACK feedback information is equal to the ACK/NACK indicated by the ACK/NACK indication information. The total number of bits or the total number of downlink transmissions indicated by the ACK/NACK indication information ACK/NACK total number of bits;

Based on the same inventive concept, a base station is also provided in the embodiment of the present application. For the specific implementation of the base station, refer to the description of the method embodiment. The repeated description is not repeated. As shown in FIG. 9, the base station mainly includes:

The first receiving module 901 is configured to receive ACK/NACK indication information that is reported by the terminal, where the ACK/NACK indication information includes at least information for determining ACK/NACK feedback information transmitted by the terminal;

The second receiving module 902 is configured to receive, according to the ACK/NACK indication information, ACK/NACK feedback information reported by the terminal.

Alternatively, the ACK/NACK indication information is transmitted in a transmission time interval TTI that is ahead of the ACK/NACK feedback information.

In a possible implementation manner, if the ACK/NACK indication information is transmitted in the same channel as the ACK/NACK feedback information, the ACK/NACK indication information and the ACK/NACK feedback information are on the same channel. Do not occupy different time domain and frequency domain resources for independent transmission.

In a possible implementation, if the ACK/NACK indication information and the ACK/NACK feedback information are transmitted in different channels, the first receiving module is specifically configured to:

Determining a first channel resource for transmitting the ACK/NACK indication information, and receiving the ACK/NACK indication information on the first channel resource;

The second receiving module is specifically configured to:

Determining a second channel resource for transmitting the ACK/NACK feedback information, and receiving the ACK/NACK feedback information on the second channel resource, where the first channel resource and the second channel resource are not the same.

In a possible implementation, if the ACK/NACK indication information is used to indicate the total number of bits of the ACK/NACK feedback information reported by the terminal or the downlink corresponding to the ACK/NACK feedback information reported by the terminal The total number of transmissions, the second receiving module is specifically configured to:

Determining that the ACK/NACK indication information indicates a product of a maximum value of the number of bits of ACK/NACK feedback information of each aggregate/activated carrier and a number of aggregated/activated carriers, or the ACK/NACK indication information indicates each aggregation / The maximum value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of the active carrier and the aggregation/activation carrier Product of numbers; or

In a possible implementation manner, the second receiving module is specifically configured to:

In a possible implementation manner, when the base station determines that the ACK/NACK indication information indicates that the ACK/NACK feedback information of the plurality of ACK/NACK feedback information pre-configured by the predefined or higher layer signaling is not smaller than the ACK/NACK feedback information. a value of the number of bits, or the ACK/NACK indication information indicating one of a plurality of downlink transmissions pre-configured by the predefined or higher layer signaling not less than a total number of downlink transmissions corresponding to the ACK/NACK feedback information The second receiving module is specifically configured to:

When the sequence length of the ACK/NACK feedback information generated by the terminal according to the detected downlink transmission is smaller than the total number of ACK/NACK bits indicated by the ACK/NACK indication information, or the total number of downlink transmissions detected by the terminal When the total number of downlink transmissions indicated by the ACK/NACK indication information is smaller, the terminal supplements the NACK at the end of the sequence of the ACK/NACK feedback information until the sequence length of the ACK/NACK feedback information is equal to the ACK/NACK. Indicates the total number of ACK/NACK bits indicated by the information or the ACK/NACK indication information The total number of ACK/NACK bits corresponding to the indicated total number of downlink transmissions;

When the base station determines that the ACK/NACK indication information indicates a product of a maximum number of bits of ACK/NACK feedback information of each aggregate/activated carrier and a number of aggregated/activated carriers, or the ACK/NACK indication information When the product of the maximum number of downlink transmissions corresponding to the ACK/NACK feedback information of each aggregation/activation carrier is multiplied by the number of aggregation/activation carriers, the second receiving module is specifically configured to:

When the eNB determines that the ACK/NACK indication information includes indication information corresponding to each aggregation/activation carrier of the terminal, the indication information corresponding to an aggregation/activation carrier of the terminal indicates a pre-defined or high-layer signaling advance. One of the number of bits of the configured multiple ACK/NACK feedback information is not less than a value of the number of bits of the ACK/NACK feedback information of the one aggregated/activated carrier or an indication of the indication information corresponding to an aggregate/activated carrier of the terminal When the pre-defined or high-level signaling pre-configured multiple downlink transmission totals is not less than a value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of the one aggregation/activation carrier, the second receiving module is specific Used for:

In a possible implementation manner, when there is an ACK/NACK feedback that is required for the physical downlink shared channel that does not have a corresponding downlink control channel, the second receiving module is specifically configured to:

Determining that the total number of ACK/NACK bits indicated by the ACK/NACK indication information includes the physical downlink total The physical downlink shared channel is included in the number of bits of the ACK/ANCK feedback information of the channel or the total number of downlink transmissions.

Based on the same inventive concept, another terminal is provided in the embodiment of the present application. For details of the implementation of the terminal, refer to the description of the method embodiment, and the repeated description is not repeated. As shown in FIG. 10, the terminal mainly includes processing. The device 1001, the memory 1002, and the transceiver 1003, wherein the transceiver receives and transmits data under the control of the processor, the memory stores a preset program, the processor reads the program in the memory, and executes the following process according to the program:

Determining ACK/NACK indication information, where the ACK/NACK indication information includes at least information for determining ACK/NACK feedback information transmitted by the terminal;

And transmitting, by the transceiver, the ACK/NACK indication information and the ACK/NACK feedback information corresponding to the ACK/NACK indication information.

In the implementation, the processor performs the related functions described in the method embodiment to implement the corresponding functions. For details, refer to the description in the method embodiment part, which is not repeated here.

Based on the same inventive concept, another base station is also provided in the embodiment of the present application. For the specific implementation of the base station, refer to the description of the method embodiment, and the repeated description is not repeated. As shown in FIG. 11, the base station mainly includes processing. The device 1101, the memory 1102, and the transceiver 1103, wherein the transceiver receives and transmits data under the control of the processor, the memory stores a preset program, and the processor reads the program in the memory, and executes the following process according to the program:

Receiving, by the transceiver, ACK/NACK indication information reported by the terminal, where the ACK/NACK indication information includes at least information for determining ACK/NACK feedback information transmitted by the terminal;

And the ACK/NACK indication information is instructed by the transceiver to receive the ACK/NACK feedback information reported by the terminal.

10 and 11, the processor, the memory and the transceiver can be connected by a bus, and the bus architecture can include any number of interconnected buses and bridges, specifically one or more processors and memories represented by the processor. The various circuits representing the memory are linked together. The bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein. The transceiver can be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium. The processor is responsible for managing the bus architecture and the usual processing, and the memory can store the data that the processor uses when performing operations.

Those skilled in the art will appreciate that embodiments of the present application can be provided as a method, system, or computer program product. Thus, the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware. Moreover, the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the present application. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

It will be apparent to those skilled in the art that various modifications and changes can be made in the present application without departing from the spirit and scope of the application. Thus, it is intended that the present invention cover the modifications and variations of the present invention.

Claims

An ACK/NACK feedback information transmission method, comprising:

Determining, by the terminal, ACK/NACK indication information, where the ACK/NACK indication information includes at least information for determining a number of bits of ACK/NACK feedback information transmitted by the terminal;

The terminal reports the ACK/NACK indication information and the ACK/NACK feedback information corresponding to the ACK/NACK indication information.
The method according to claim 1, wherein the ACK/NACK indication information is transmitted in the same transmission time interval TTI as the ACK/NACK feedback information;

Alternatively, the ACK/NACK indication information is transmitted in a transmission time interval TTI that is ahead of the ACK/NACK feedback information.
The method of claim 1, wherein the ACK/NACK indication information is transmitted on the same channel or in a different channel than the ACK/NACK feedback information.
The method according to any one of claims 1-3, wherein the ACK/NACK indication information and the ACK/NACK indication information are transmitted if the ACK/NACK indication information is transmitted in the same channel as the ACK/NACK feedback information. The ACK/NACK feedback information is independently transmitted on different channels in the same time domain and frequency domain resources.
The method according to any one of claims 1-3, wherein the terminal reports the ACK/NACK if the ACK/NACK indication information and the ACK/NACK feedback information are transmitted in different channels. And the indication information and the ACK/NACK feedback information corresponding to the ACK/NACK indication information, including:

Determining, by the terminal, a first channel resource for transmitting the ACK/NACK indication information, and transmitting the ACK/NACK indication information on the first channel resource;

Determining, by the terminal, a second channel resource for transmitting the ACK/NACK feedback information, and transmitting the ACK/NACK feedback information on the second channel resource, where the first channel resource and the second channel Channel resources are different.
The method of claim 5, wherein the channel format for transmitting the ACK/NACK indication information is the same as or different from the channel format for transmitting the ACK/NACK feedback information.
The method of claim 5, wherein the determining, by the terminal, the first channel resource for transmitting the ACK/NACK indication information comprises:

Obtaining, by the terminal, the first channel resource that is pre-configured by the network side by using high layer signaling;

Or the terminal acquires a first channel resource set pre-configured by the network side by using the high layer signaling, and determines at least one first channel resource in the first channel resource set according to the bit field in the downlink control channel.
The method according to any one of claims 1-3, wherein the ACK/NACK indication information is used to indicate the total number of bits of the ACK/NACK feedback information reported by the terminal or reported by the terminal. The total number of downlink transmissions corresponding to the ACK/NACK feedback information;

Or the ACK/NACK indication information indicates a total number of bits of the ACK/NACK feedback information on each carrier in the aggregated/activated carrier or each carrier in the aggregate/activated carrier of the terminal The total number of downlink transmissions corresponding to the ACK/NACK feedback information.
The method according to claim 8, wherein the ACK/NACK indication information is used to indicate the total number of bits of the ACK/NACK feedback information reported by the terminal or the ACK/ reported by the terminal. The total number of downlink transmissions corresponding to the NACK feedback information, and the determining, by the terminal, the ACK/NACK indication information, specifically:

The terminal generates ACK/NACK feedback information, and uses the number of bits of the ACK/NACK feedback information as the ACK/NACK indication information, or uses the total number of downlink transmissions corresponding to the ACK/NACK feedback information as the ACK/ NACK indication information; or

The terminal generates ACK/NACK feedback information, and selects a value that is not less than the number of bits of the ACK/NACK feedback information in the number of bits of the plurality of ACK/NACK feedback information that is pre-configured or defined by the high-layer signaling. The ACK/NACK indication information, or a value of not less than a total number of downlink transmissions corresponding to the ACK/NACK feedback information, is selected as the ACK in a plurality of downlink transmissions pre-configured in a predefined or higher layer signaling. /NACK indication information; or

The terminal generates ACK/NACK feedback information for each aggregate/activated carrier, and multiplies the maximum value of the number of bits of the ACK/NACK feedback information of each aggregate/activated carrier and the number of aggregated/activated carriers as the ACK/NACK indication information, or a product of the maximum value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of each aggregate/activated carrier and the number of aggregated/activated carriers as the ACK/NACK indication information; or

The terminal generates ACK/NACK feedback information, and uses the number of ACK/NACK feedback information bits corresponding to the total number of downlink transmissions indicated in the downlink control channel corresponding to the ACK/NACK feedback information as the ACK/NACK indication information. Or using the total number of downlink transmissions as the ACK/NACK indication information;

If the ACK/NACK indication information indicates the total number of bits of the ACK/NACK feedback information on the carrier in the aggregated/activated carrier or the terminal is on each carrier in the aggregate/activated carrier The total number of downlink transmissions corresponding to the ACK/NACK feedback information, and the terminal determining the ACK/NACK indication information, specifically:

The terminal generates ACK/NACK feedback information for each aggregation/activation carrier, and uses the number of bits of ACK/NACK feedback information of each aggregation/activation carrier as the corresponding aggregation/activation carrier in the ACK/NACK indication information. Instructing information, or the total number of downlink transmissions corresponding to the ACK/NACK feedback information of each aggregation/activation carrier, as the indication information corresponding to the aggregation/activation carrier in the ACK/NACK indication information; or

The terminal generates ACK/NACK feedback information for each aggregation/activation carrier, and selects not less than the ACK/NACK feedback information among the number of bits of the multiple ACK/NACK feedback information pre-configured by the predefined or higher layer signaling. a value of the number of bits, as the indication information corresponding to the aggregated/activated carrier in the ACK/NACK indication information, or selecting not less than the ACK in the total number of downlink transmissions pre-configured in the predefined or higher layer signaling /NACK A value of the total number of downlink transmissions corresponding to the feedback information, as the indication information corresponding to the aggregated/activated carrier in the ACK/NACK indication information.
The method according to claim 9, wherein the terminal generates ACK/NACK feedback information, or the terminal generates ACK/NACK feedback information for each aggregation/activation carrier, which specifically includes:

The terminal generates ACK/NACK feedback information according to the downlink allocation index DAI corresponding to the downlink transmission that feeds back the ACK/NACK feedback information at the same time; or

The terminal generates ACK/NACK feedback information according to a transmission time interval TTI number and/or a process number and/or a carrier number of a downlink transmission that feeds back ACK/NACK feedback information at the same time.
The method according to claim 9, wherein the terminal generates ACK/NACK feedback information, and selects one of the number of bits of the plurality of ACK/NACK feedback information pre-configured in the predefined or higher layer signaling to be not less than a value of the number of bits of the ACK/NACK feedback information, as the ACK/NACK indication information, or one of a plurality of downlink transmissions pre-configured in a predefined or higher layer signaling, not less than the ACK/NACK feedback A value of the total number of downlink transmissions corresponding to the information, as the ACK/NACK indication information, includes:

When the sequence length of the ACK/NACK feedback information is smaller than the total number of ACK/NACK bits indicated by the ACK/NACK indication information, or when the total number of downlink transmissions corresponding to the ACK/NACK feedback information is smaller than the ACK/ When the NACK indicates the total number of downlink transmissions indicated by the information, the terminal supplements the NACK at the end of the sequence of the ACK/NACK feedback information until the sequence length of the ACK/NACK feedback information is equal to that indicated by the ACK/NACK indication information. The total number of ACK/NACK bits or the total number of ACK/NACK bits corresponding to the total number of downlink transmissions indicated by the ACK/NACK indication information;

The terminal generates ACK/NACK feedback information for each aggregate/activated carrier, and multiplies the maximum value of the number of bits of the ACK/NACK feedback information of each aggregate/activated carrier and the number of aggregated/activated carriers as the The ACK/NACK indication information, or the product of the maximum value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of each aggregation/activation carrier and the number of aggregation/activation carriers is used as the ACK/NACK indication information, including:

When the number of bits of ACK/NACK feedback information of an aggregated/activated carrier is smaller than the maximum number of bits of ACK/NACK feedback information of each aggregated/activated carrier, or when ACK/NACK feedback of an aggregated/activated carrier When the total number of downlink transmissions corresponding to the information is smaller than the maximum value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of each of the aggregated/activated carriers, the ACK/NACK feedback information of the terminal on the aggregated/activated carrier The sequence is supplemented with NACK until the sequence length of the ACK/NACK feedback information of the aggregate/activated carrier is equal to the maximum value of the number of bits of the ACK/NACK feedback information of each aggregate/activated carrier or each aggregation/activation The total number of ACK/NACK bits corresponding to the maximum value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of the carrier;

The terminal generates ACK/NACK feedback information for each aggregation/activation carrier, and selects one of the number of bits of the multiple ACK/NACK feedback information pre-configured by the predefined or higher layer signaling to be not smaller than the ACK/NACK feedback information. a value of the number of bits as an indication of the corresponding aggregation/activation carrier in the ACK/NACK indication information And selecting, as a value of the downlink transmission total corresponding to the ACK/NACK feedback information, a value of the total number of downlink transmissions pre-configured in the pre-defined or high-level signaling, as the ACK/NACK indication information. Instructions for aggregating/activating carriers, including:

When the sequence length of the ACK/NACK feedback information of an aggregate/activated carrier is smaller than the total number of ACK/NACK bits of the one aggregate/activated carrier indicated by the ACK/NACK indication information, or when an aggregate/activated carrier is used When the total number of downlink transmissions corresponding to the ACK/NACK feedback information is smaller than the total number of downlink transmissions of the one aggregated/activated carrier indicated by the ACK/NACK indication information, the terminal is ACK/NACK on the one aggregate/activated carrier. The sequence of the feedback information is complemented with NACK until the sequence length of the ACK/NACK feedback information of the one aggregate/activated carrier is equal to the total number of ACK/NACK bits of the one aggregate/activated carrier indicated by the ACK/NACK indication information. Or the total number of ACK/NACK bits corresponding to the total number of downlink transmissions of the one aggregate/activated carrier indicated by the ACK/NACK indication information.
The method according to claim 9, wherein when there is ACK/NACK feedback required for the physical downlink shared channel without the corresponding downlink control channel, the total number of ACK/NACK bits indicated by the ACK/NACK indication information or The total number of downlink transmissions is increased by one.
An ACK/NACK feedback information transmission method, comprising:

The eNB receives the ACK/NACK indication information reported by the terminal, where the ACK/NACK indication information includes at least information for determining the number of bits of the ACK/NACK feedback information transmitted by the terminal;

The base station receives the ACK/NACK feedback information reported by the terminal according to the ACK/NACK indication information.
The method according to claim 13, wherein the ACK/NACK indication information is transmitted in the same transmission time interval TTI as the ACK/NACK feedback information;

Alternatively, the ACK/NACK indication information is transmitted in a transmission time interval TTI that is ahead of the ACK/NACK feedback information.
The method of claim 13, wherein the ACK/NACK indication information is transmitted on the same channel or in a different channel than the ACK/NACK feedback information.
The method according to any one of claims 13-15, wherein the ACK/NACK indication information and the ACK/NACK indication information are transmitted if the ACK/NACK indication information is transmitted in the same channel as the ACK/NACK feedback information. The ACK/NACK feedback information is independently transmitted on different channels in the same time domain and frequency domain resources.
The method according to any one of claims 13 to 15, wherein if the ACK/NACK indication information and the ACK/NACK feedback information are transmitted in different channels, the base station receives an ACK reported by the terminal. The NACK indication information is used to receive the ACK/NACK feedback information reported by the terminal according to the ACK/NACK indication information, including:

Determining, by the base station, a first channel resource for transmitting the ACK/NACK indication information, and receiving the ACK/NACK indication information on the first channel resource;

Determining, by the base station, a second channel resource for transmitting the ACK/NACK feedback information, and receiving the ACK/NACK feedback information on the second channel resource, where the first channel resource and the second channel Channel resources are different.
The method of claim 17, wherein the channel format for transmitting the ACK/NACK indication information is the same as or different from the channel format for transmitting the ACK/NACK feedback information.
The method according to claim 17, wherein the base station determines a first channel resource for transmitting the ACK/NACK indication information, including:

Determining, by the base station, that the first channel resource is pre-configured to the terminal by the base station by using high layer signaling;

Or the base station determines that the first channel resource is at least one first channel resource in the first channel resource set that is indicated by the base station to the terminal by using a bit field in a downlink control channel, the first channel resource. The set is pre-configured to the terminal by the base station by high layer signaling.
The method according to any one of claims 13 to 15, wherein the ACK/NACK indication information is used to indicate the total number of bits of the ACK/NACK feedback information reported by the terminal or reported by the terminal. The total number of downlink transmissions corresponding to the ACK/NACK feedback information;

Or the ACK/NACK indication information indicates a total number of bits of the ACK/NACK feedback information on each carrier in the aggregated/activated carrier or each carrier in the aggregate/activated carrier of the terminal The total number of downlink transmissions corresponding to the ACK/NACK feedback information.
The method according to claim 20, wherein the ACK/NACK indication information is used to indicate the total number of bits of the ACK/NACK feedback information reported by the terminal or the ACK/ reported by the terminal. The total number of downlink transmissions corresponding to the NACK feedback information, the base station receiving, according to the ACK/NACK indication information, the ACK/NACK feedback information reported by the terminal, specifically:

Determining, by the base station, that the ACK/NACK indication information indicates a number of bits of the ACK/NACK feedback information, or the ACK/NACK indication information indicating a total number of downlink transmissions corresponding to the ACK/NACK feedback information; or

Determining, by the base station, that the ACK/NACK indication information indicates a value of a number of bits of the ACK/NACK feedback information that is not configured by a plurality of ACK/NACK feedback information pre-configured by the pre-defined or higher layer signaling, Or the ACK/NACK indication information indicates a value of not less than a total number of downlink transmissions corresponding to the ACK/NACK feedback information that is pre-configured by the predefined or higher layer signaling; or

Determining, by the base station, that the ACK/NACK indication information indicates a product of a maximum number of bits of ACK/NACK feedback information of each aggregate/activated carrier and a number of aggregated/activated carriers, or the ACK/NACK indication information indication The product of the maximum number of downlink transmissions corresponding to the ACK/NACK feedback information of each aggregate/activated carrier and the number of aggregated/activated carriers; or

Determining, by the base station, the ACK/NACK indication information indicating the number of ACK/NACK feedback information bits or the total number of downlink transmissions corresponding to the total number of downlink transmissions indicated in the downlink control channel corresponding to the ACK/NACK feedback information;

If the ACK/NACK indication information indicates the total number of bits of the ACK/NACK feedback information on the carrier in the aggregated/activated carrier or the terminal is on each carrier in the aggregate/activated carrier The total number of downlink transmissions corresponding to the ACK/NACK feedback information, the base station receiving the ACK/NACK feedback information reported by the terminal according to the ACK/NACK indication information, specifically:

Determining, by the base station, that the ACK/NACK indication information includes indication information corresponding to each aggregate/activated carrier of the terminal, and indicating information of an aggregate/activated carrier of the terminal indicating an ACK of the aggregated/activated carrier The number of bits of the /NACK feedback information, or the indication information of an aggregate/activated carrier corresponding to the terminal, indicates the total number of downlink transmissions corresponding to the ACK/NACK feedback information of the one aggregated/activated carrier; or

Determining, by the base station, that the ACK/NACK indication information includes indication information corresponding to each aggregation/activation carrier of the terminal, and indication information corresponding to an aggregate/activated carrier of the terminal indicates pre-defined or high-layer signaling pre-configuration One of the number of bits of the plurality of ACK/NACK feedback information is not less than a value of the number of bits of the ACK/NACK feedback information of the one aggregated/activated carrier, or an indication of the indication information corresponding to an aggregate/activated carrier of the terminal The pre-defined or high-level signaling pre-configured plurality of downlink transmissions is not less than a value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of the one aggregation/activation carrier.
The method according to claim 21, wherein the base station determines that the terminal generates ACK/NACK feedback information as follows:

The terminal generates ACK/NACK feedback information according to the downlink allocation index DAI corresponding to the downlink transmission that feeds back the ACK/NACK feedback information at the same time; or

The terminal generates ACK/NACK feedback information according to a transmission time interval TTI number and/or a process number and/or a carrier number of a downlink transmission that feeds back ACK/NACK feedback information at the same time.
The method according to claim 21, wherein when the base station determines that the ACK/NACK indication information indicates a number of bits of a plurality of ACK/NACK feedback information pre-configured in advance or higher layer signaling, not less than a value of the number of bits of the ACK/NACK feedback information, or the ACK/NACK indication information indicating that the ACK/NACK feedback information is not less than the ACK/NACK feedback information of the plurality of downlink transmissions pre-configured by the predefined or higher layer signaling And receiving, by the base station, the ACK/NACK feedback information reported by the terminal according to the ACK/NACK indication information, where the base station includes:

The base station determines that the terminal generates ACK/NACK feedback information as follows:

When the sequence length of the ACK/NACK feedback information generated by the terminal according to the detected downlink transmission is smaller than the total number of ACK/NACK bits indicated by the ACK/NACK indication information, or the total number of downlink transmissions detected by the terminal When the total number of downlink transmissions indicated by the ACK/NACK indication information is less than, the terminal is in the The sequence of ACK/NACK feedback information is complemented with NACK until the sequence length of the ACK/NACK feedback information is equal to the total number of ACK/NACK bits indicated by the ACK/NACK indication information or the ACK/NACK indication information The total number of ACK/NACK bits corresponding to the total number of downlink transmissions;

When the base station determines that the ACK/NACK indication information indicates a product of a maximum number of bits of ACK/NACK feedback information of each aggregate/activated carrier and a number of aggregated/activated carriers, or the ACK/NACK indication information And when the base station indicates the product of the maximum value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of each aggregation/activation carrier and the number of aggregation/activation carriers, the base station receives the terminal report according to the ACK/NACK indication information. ACK/NACK feedback information, including:

The base station determines that the terminal generates ACK/NACK feedback information as follows:

When the number of bits of the ACK/NACK feedback information generated by the terminal according to the detected downlink transmission on an aggregate/activated carrier is smaller than the maximum value of the number of bits of the ACK/NACK feedback information of each aggregate/activated carrier, Or when the total number of downlink transmissions detected by the terminal on one aggregation/activation carrier is smaller than the maximum value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of each aggregation/activation carrier, the terminal is in the The sequence of ACK/NACK feedback information of the aggregated/activated carrier is complemented by a NACK until the sequence length of the ACK/NACK feedback information of the aggregated/activated carrier is equal to the number of bits of the ACK/NACK feedback information of each aggregated/activated carrier. The maximum value of the ACK/NACK total number of bits corresponding to the maximum value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of each of the aggregated/activated carriers;

When the eNB determines that the ACK/NACK indication information includes indication information corresponding to each aggregation/activation carrier of the terminal, the indication information corresponding to an aggregation/activation carrier of the terminal indicates a pre-defined or high-layer signaling advance. One of the number of bits of the configured ACK/NACK feedback information is not less than a value of the number of bits of the ACK/NACK feedback information of the one aggregated/activated carrier, or an indication corresponding to an aggregate/activated carrier of the terminal Determining, according to the total number of downlink transmissions corresponding to the ACK/NACK feedback information of the one aggregation/activation carrier, that the pre-defined or high-level signaling pre-configured multiple downlink transmission totals are The ACK/NACK indication information is used to receive the ACK/NACK feedback information reported by the terminal, and specifically includes:

The base station determines that the terminal generates ACK/NACK feedback information as follows:

The sequence length of the ACK/NACK feedback information generated by the terminal according to the detected downlink transmission on an aggregate/activated carrier is smaller than the total ACK/NACK of the one aggregate/activated carrier indicated by the ACK/NACK indication information. When the number of bits, or when the total number of downlink transmissions detected by the terminal on one aggregate/activated carrier is smaller than the total number of downlink transmissions of the one aggregated/activated carrier indicated by the ACK/NACK indication information, the terminal is The sequence of ACK/NACK feedback information of the one aggregation/activation carrier is complemented with NACK until the sequence length of the ACK/NACK feedback information of the one aggregate/activated carrier is equal to the one indicated by the ACK/NACK indication information. The total number of ACK/NACK bits of the aggregated/activated carrier or the total number of ACK/NACK bits corresponding to the total number of downlink transmissions of the one aggregated/activated carrier indicated by the ACK/NACK indication information.
The method according to claim 21, wherein when there is a physical downlink shared channel having no corresponding downlink control channel, ACK/NACK feedback is required, the base station determines an ACK/NACK indicated by the ACK/NACK indication information. The physical downlink shared channel is included in the total number of bits including the number of bits of the ACK/ANCK feedback information of the physical downlink shared channel or the total number of downlink transmissions.
A terminal, comprising:

a processing module, configured to determine ACK/NACK indication information, where the ACK/NACK indication information includes at least information for determining a number of bits of ACK/NACK feedback information transmitted by the terminal;

And a reporting module, configured to report the ACK/NACK indication information and the ACK/NACK feedback information corresponding to the ACK/NACK indication information.
The terminal according to claim 25, wherein the ACK/NACK indication information is transmitted in the same transmission time interval TTI as the ACK/NACK feedback information;

Alternatively, the ACK/NACK indication information is transmitted in a transmission time interval TTI that is ahead of the ACK/NACK feedback information.
The terminal according to claim 25, wherein the ACK/NACK indication information and the ACK/NACK feedback information are transmitted on the same channel or different channels.
The terminal according to any one of claims 25 to 27, wherein if the ACK/NACK indication information and the ACK/NACK feedback information are transmitted in the same channel, the ACK/NACK indication information and the location The ACK/NACK feedback information is independently transmitted on different channels in the same time domain and frequency domain resources.
The terminal according to any one of claims 25 to 27, wherein, if the ACK/NACK indication information and the ACK/NACK feedback information are transmitted in different channels, the reporting module is specifically configured to:

Determining a first channel resource for transmitting the ACK/NACK indication information, and transmitting the ACK/NACK indication information on the first channel resource;

Determining a second channel resource for transmitting the ACK/NACK feedback information, transmitting the ACK/NACK feedback information on the second channel resource, where the first channel resource and the second channel resource are not the same.
The terminal according to claim 29, wherein the channel format for transmitting the ACK/NACK indication information is the same as or different from the channel format for transmitting the ACK/NACK feedback information.
The terminal according to claim 29, wherein the reporting module is specifically configured to:

Obtaining, by the network side, the first channel resource pre-configured by high layer signaling;

Or acquiring a first channel resource set pre-configured by the network side by using the high layer signaling, and determining, according to the bit field in the downlink control channel, at least one first channel resource in the first channel resource set.
The terminal according to any one of claims 25 to 27, wherein the ACK/NACK indication information is used to indicate the total number of bits of the ACK/NACK feedback information reported by the terminal or reported by the terminal. The total number of downlink transmissions corresponding to the ACK/NACK feedback information;

Or the ACK/NACK indication information indicates a total number of bits of the ACK/NACK feedback information on each carrier in the aggregated/activated carrier or each carrier in the aggregate/activated carrier of the terminal The total number of downlink transmissions corresponding to the ACK/NACK feedback information.
The terminal according to claim 32, wherein the ACK/NACK indication information is used to indicate the total number of bits of the ACK/NACK feedback information reported by the terminal or the ACK/ reported by the terminal. The total number of downlink transmissions corresponding to the NACK feedback information, where the processing module is specifically configured to:

Generating ACK/NACK feedback information, using the number of bits of the ACK/NACK feedback information as the ACK/NACK indication information, or using the total number of downlink transmissions corresponding to the ACK/NACK feedback information as the ACK/NACK indication information ;or

Generating ACK/NACK feedback information, and selecting, as the ACK, a value that is not less than the number of bits of the ACK/NACK feedback information among the number of bits of the plurality of ACK/NACK feedback information pre-configured by the pre-defined or higher layer signaling /NACK indication information, or selecting a value not less than a total number of downlink transmissions corresponding to the ACK/NACK feedback information among a plurality of downlink transmission totals pre-configured or defined by the high-level signaling, as the ACK/NACK indication Information; or

Generating ACK/NACK feedback information for each aggregate/activated carrier, and multiplying the maximum number of bits of the ACK/NACK feedback information of each aggregate/activated carrier by the number of aggregated/activated carriers as the ACK/NACK The indication information, or the product of the maximum value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of each aggregation/activation carrier and the number of aggregation/activation carriers, as the ACK/NACK indication information; or

Generating ACK/NACK feedback information, and using the number of ACK/NACK feedback information bits corresponding to the total number of downlink transmissions indicated in the downlink control channel corresponding to the ACK/NACK feedback information as the ACK/NACK indication information, or Describe the total number of downlink transmissions as the ACK/NACK indication information;

If the ACK/NACK indication information indicates the total number of bits of the ACK/NACK feedback information on the carrier in the aggregated/activated carrier or the terminal is on each carrier in the aggregate/activated carrier The total number of downlink transmissions corresponding to the ACK/NACK feedback information, and the determining module is specifically configured to:

Generating ACK/NACK feedback information for each aggregate/activated carrier, and using the number of bits of the ACK/NACK feedback information of each aggregate/activated carrier as the indication information corresponding to the aggregated/activated carrier in the ACK/NACK indication information, Or the total number of downlink transmissions corresponding to the ACK/NACK feedback information of each aggregation/activation carrier is used as the indication information corresponding to the aggregation/activation carrier in the ACK/NACK indication information; or

Generating ACK/NACK feedback information for each aggregate/activated carrier, and selecting a number of bits not less than the number of bits of the ACK/NACK feedback information among the number of bits of the plurality of ACK/NACK feedback information pre-configured by the predefined or higher layer signaling a value, as the indication information corresponding to the ACK/NACK indication information corresponding to the aggregation/activation carrier, or selecting not less than the ACK/NACK feedback among the total number of downlink transmissions pre-configured in the predefined or higher layer signaling Information A value of the corresponding total number of downlink transmissions is used as the indication information corresponding to the aggregated/activated carrier in the ACK/NACK indication information.
The terminal according to claim 33, wherein the processing module is specifically configured to:

Generating ACK/NACK feedback information according to a downlink allocation index DAI corresponding to a downlink transmission that feeds back ACK/NACK feedback information at the same time; or

The ACK/NACK feedback information is generated according to the transmission time interval TTI number and/or the process number and/or the carrier number of the downlink transmission that feeds back the ACK/NACK feedback information at the same time.
The terminal according to claim 33, wherein the processing module is specifically configured to:

When the sequence length of the ACK/NACK feedback information is smaller than the total number of ACK/NACK bits indicated by the ACK/NACK indication information, or when the total number of downlink transmissions corresponding to the ACK/NACK feedback information is smaller than the ACK/ When the NACK indicates the total number of downlink transmissions indicated by the information, the NACK is added to the end of the sequence of the ACK/NACK feedback information until the sequence length of the ACK/NACK feedback information is equal to the ACK/NACK indicated by the ACK/NACK indication information. The total number of bits or the total number of ACK/NACK bits corresponding to the total number of downlink transmissions indicated by the ACK/NACK indication information;

When the number of bits of ACK/NACK feedback information of an aggregated/activated carrier is smaller than the maximum number of bits of ACK/NACK feedback information of each aggregated/activated carrier, or when ACK/NACK feedback of an aggregated/activated carrier When the total number of downlink transmissions corresponding to the information is smaller than the maximum value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of each aggregate/activated carrier, the end of the sequence of ACK/NACK feedback information of the aggregated/activated carrier is added. NACK, the sequence length of the ACK/NACK feedback information of the aggregate/activated carrier is equal to the maximum value of the number of bits of the ACK/NACK feedback information of each aggregate/activated carrier or the ACK of each of the aggregated/activated carriers The total number of ACK/NACK bits corresponding to the maximum value of the total number of downlink transmissions corresponding to the /NACK feedback information;

When the sequence length of the ACK/NACK feedback information of an aggregate/activated carrier is smaller than the total number of ACK/NACK bits of the one aggregate/activated carrier indicated by the ACK/NACK indication information, or when an aggregate/activated carrier is used When the total number of downlink transmissions corresponding to the ACK/NACK feedback information is smaller than the total number of downlink transmissions of the one aggregated/activated carrier indicated by the ACK/NACK indication information, the ACK/NACK feedback information of the one aggregated/activated carrier NACK is added to the end of the sequence until the sequence length of the ACK/NACK feedback information of the one aggregate/activated carrier is equal to the total number of ACK/NACK bits of the one aggregate/activated carrier indicated by the ACK/NACK indication information or the The ACK/NACK indicates the total number of ACK/NACK bits corresponding to the total number of downlink transmissions of the one aggregate/activated carrier indicated by the information.
The terminal according to claim 33, wherein when there is ACK/NACK feedback required for the physical downlink shared channel without the corresponding downlink control channel, the total number of ACK/NACK bits indicated by the ACK/NACK indication information or The total number of downlink transmissions is increased by one.
A base station, comprising:

a first receiving module, configured to receive ACK/NACK indication information reported by the terminal, where the ACK/NACK indication information includes at least information for determining a number of bits of ACK/NACK feedback information transmitted by the terminal;

And a second receiving module, configured to receive, according to the ACK/NACK indication information, ACK/NACK feedback information reported by the terminal.
The base station according to claim 37, wherein the ACK/NACK indication information is transmitted in the same transmission time interval TTI as the ACK/NACK feedback information;

Alternatively, the ACK/NACK indication information is transmitted in a transmission time interval TTI that is ahead of the ACK/NACK feedback information.
The base station according to claim 37, wherein said ACK/NACK indication information and said ACK/NACK feedback information are transmitted on the same channel or in different channels.
The base station according to any one of claims 37 to 39, wherein if the ACK/NACK indication information and the ACK/NACK feedback information are transmitted in the same channel, the ACK/NACK indication information and the location The ACK/NACK feedback information is independently transmitted on different channels in the same time domain and frequency domain resources.
The base station according to any one of claims 37 to 39, wherein, if the ACK/NACK indication information and the ACK/NACK feedback information are transmitted in different channels, the first receiving module is specifically configured to: :

Determining a first channel resource for transmitting the ACK/NACK indication information, and receiving the ACK/NACK indication information on the first channel resource;

The second receiving module is specifically configured to:

Determining a second channel resource for transmitting the ACK/NACK feedback information, and receiving the ACK/NACK feedback information on the second channel resource, where the first channel resource and the second channel resource are not the same.
The base station according to claim 41, wherein the channel format for transmitting the ACK/NACK indication information is the same as or different from the channel format for transmitting the ACK/NACK feedback information.
The base station according to claim 41, wherein the first receiving module is specifically configured to:

Determining that the first channel resource is pre-configured to the terminal by the base station by using high layer signaling;

Or determining, by the base station, at least one first channel resource in the first channel resource set of the terminal that is indicated by the base station by using a bit field in a downlink control channel, where the first channel resource set is The base station is pre-configured to the terminal by high layer signaling.
The base station according to any one of claims 37 to 39, wherein the ACK/NACK indication information is used to indicate the total number of bits of the ACK/NACK feedback information reported by the terminal or reported by the terminal. The total number of downlink transmissions corresponding to the ACK/NACK feedback information;

Or the ACK/NACK indication information indicates a total number of bits of the ACK/NACK feedback information on each carrier in the aggregated/activated carrier or each carrier in the aggregate/activated carrier of the terminal The total number of downlink transmissions corresponding to the ACK/NACK feedback information.
The base station according to claim 44, wherein the ACK/NACK indication information is used to indicate the total number of bits of the ACK/NACK feedback information reported by the terminal or the ACK/ reported by the terminal. The total number of downlink transmissions corresponding to the NACK feedback information, where the second receiving module is specifically configured to:

Determining, by the ACK/NACK indication information, a number of bits of the ACK/NACK feedback information, or the ACK/NACK indication information indicating a total number of downlink transmissions corresponding to the ACK/NACK feedback information; or

Determining that the ACK/NACK indication information indicates a value of a number of bits of the plurality of ACK/NACK feedback information pre-configured by the pre-defined or higher layer signaling that is not less than the number of bits of the ACK/NACK feedback information, or The ACK/NACK indication information indicates a value of not less than a total number of downlink transmissions corresponding to the ACK/NACK feedback information, which is a pre-defined or high-level signaling pre-configured plurality of downlink transmission totals; or

Determining that the ACK/NACK indication information indicates a product of a maximum value of the number of bits of ACK/NACK feedback information of each aggregate/activated carrier and a number of aggregated/activated carriers, or the ACK/NACK indication information indicates each aggregation /the product of the maximum number of downlink transmissions corresponding to the ACK/NACK feedback information of the active carrier and the number of aggregated/activated carriers; or

Determining, by the ACK/NACK indication information, the number of ACK/NACK feedback information bits or the total number of downlink transmissions corresponding to the total number of downlink transmissions indicated in the downlink control channel corresponding to the ACK/NACK feedback information;

If the ACK/NACK indication information indicates the total number of bits of the ACK/NACK feedback information on the carrier in the aggregated/activated carrier or the terminal is on each carrier in the aggregate/activated carrier The total number of downlink transmissions corresponding to the ACK/NACK feedback information, and the second receiving module is specifically configured to:

Determining that the ACK/NACK indication information includes indication information corresponding to each aggregation/activation carrier of the terminal, and indication information corresponding to an aggregation/activation carrier of the terminal indicates ACK/NACK feedback of one aggregation/activation carrier The number of bits of the information, or the indication information corresponding to an aggregate/activated carrier of the terminal, indicates the total number of downlink transmissions corresponding to the ACK/NACK feedback information of the one aggregated/activated carrier; or

Determining that the ACK/NACK indication information includes indication information corresponding to each aggregation/activation carrier of the terminal, and indication information corresponding to an aggregation/activation carrier of the terminal indicates multiple pre-defined or high-level signaling pre-configured a value of the number of bits of the ACK/NACK feedback information of the ACK/NACK feedback information of the ACK/NACK feedback information, or an indication message corresponding to an aggregate/activated carrier of the terminal, indicating a predefined Or a value of not less than a total of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of the one aggregated/activated carrier.
The base station according to claim 45, wherein the second receiving module is specifically configured to:

Determining that the terminal generates ACK/NACK feedback information as follows:

Generating ACK/NACK feedback information according to a downlink allocation index DAI corresponding to a downlink transmission that feeds back ACK/NACK feedback information at the same time; or

The ACK/NACK feedback information is generated according to the transmission time interval TTI number and/or the process number and/or the carrier number of the downlink transmission that feeds back the ACK/NACK feedback information at the same time.
The base station according to claim 45, wherein the base station determines that the ACK/NACK indication information indicates not less than a number of bits of a plurality of ACK/NACK feedback information pre-configured by the pre-defined or higher layer signaling. a value of the number of bits of the ACK/NACK feedback information, or the ACK/NACK indication information indicating that the ACK/NACK feedback information is not less than the ACK/NACK feedback information of the plurality of downlink transmissions pre-configured by the predefined or higher layer signaling When the value of the corresponding total number of downlink transmissions is one, the second receiving module is specifically configured to:

Determining that the terminal generates ACK/NACK feedback information as follows:

When the sequence length of the ACK/NACK feedback information generated by the terminal according to the detected downlink transmission is smaller than the total number of ACK/NACK bits indicated by the ACK/NACK indication information, or the total number of downlink transmissions detected by the terminal When the total number of downlink transmissions indicated by the ACK/NACK indication information is smaller, the terminal supplements the NACK at the end of the sequence of the ACK/NACK feedback information until the sequence length of the ACK/NACK feedback information is equal to the ACK/NACK. Indicates the total number of ACK/NACK bits indicated by the indication information or the total number of ACK/NACK bits corresponding to the total number of downlink transmissions indicated by the ACK/NACK indication information;

When the base station determines that the ACK/NACK indication information indicates a product of a maximum number of bits of ACK/NACK feedback information of each aggregate/activated carrier and a number of aggregated/activated carriers, or the ACK/NACK indication information When the product of the maximum number of downlink transmissions corresponding to the ACK/NACK feedback information of each aggregation/activation carrier is multiplied by the number of aggregation/activation carriers, the second receiving module is specifically configured to:

Determining that the terminal generates ACK/NACK feedback information as follows:

When the number of bits of the ACK/NACK feedback information generated by the terminal according to the detected downlink transmission on an aggregate/activated carrier is smaller than the maximum value of the number of bits of the ACK/NACK feedback information of each aggregate/activated carrier, Or when the total number of downlink transmissions detected by the terminal on one aggregation/activation carrier is smaller than the maximum value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of each aggregation/activation carrier, the terminal is in the The sequence of ACK/NACK feedback information of the aggregated/activated carrier is complemented by a NACK until the sequence length of the ACK/NACK feedback information of the aggregated/activated carrier is equal to the number of bits of the ACK/NACK feedback information of each aggregated/activated carrier. The maximum value of the ACK/NACK total number of bits corresponding to the maximum value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of each of the aggregated/activated carriers;

When the eNB determines that the ACK/NACK indication information includes indication information corresponding to each aggregation/activation carrier of the terminal, the indication information corresponding to an aggregation/activation carrier of the terminal indicates a pre-defined or high-layer signaling advance. One of the number of bits of the configured ACK/NACK feedback information is not less than a value of the number of bits of the ACK/NACK feedback information of the one aggregated/activated carrier, or an indication corresponding to an aggregate/activated carrier of the terminal Not indicating that one of the plurality of downlink transmissions pre-configured by the predefined or higher layer signaling is not less than the one aggregation/aggression When the ACK/NACK feedback information of the live carrier is a value of the total number of downlink transmissions, the second receiving module is specifically configured to:

Determining that the terminal generates ACK/NACK feedback information as follows:

The sequence length of the ACK/NACK feedback information generated by the terminal according to the detected downlink transmission on an aggregate/activated carrier is smaller than the total ACK/NACK of the one aggregate/activated carrier indicated by the ACK/NACK indication information. When the number of bits, or when the total number of downlink transmissions detected by the terminal on one aggregate/activated carrier is smaller than the total number of downlink transmissions of the one aggregated/activated carrier indicated by the ACK/NACK indication information, the terminal is The sequence of ACK/NACK feedback information of the one aggregation/activation carrier is complemented with NACK until the sequence length of the ACK/NACK feedback information of the one aggregate/activated carrier is equal to the one indicated by the ACK/NACK indication information. The total number of ACK/NACK bits of the aggregated/activated carrier or the total number of ACK/NACK bits corresponding to the total number of downlink transmissions of the one aggregated/activated carrier indicated by the ACK/NACK indication information.
The base station according to claim 45, wherein when the physical downlink shared channel that does not have a corresponding downlink control channel needs to perform ACK/NACK feedback, the second receiving module is specifically configured to:

Determining, in the total number of ACK/NACK bits indicated by the ACK/NACK indication information, the number of bits of the ACK/ANCK feedback information including the physical downlink shared channel or the total number of downlink transmissions includes the physical downlink shared channel.
A terminal, comprising: a processor, a memory, and a transceiver, wherein the transceiver receives and transmits data under control of the processor, and the memory stores a preset program, the processing The program reads the program in the memory, and executes the following process according to the program:

Determining ACK/NACK indication information, where the ACK/NACK indication information includes at least information for determining a number of bits of ACK/NACK feedback information transmitted by the terminal;

And transmitting, by the transceiver, the ACK/NACK indication information and the ACK/NACK feedback information corresponding to the ACK/NACK indication information.
The terminal according to claim 49, wherein the ACK/NACK indication information is transmitted in the same transmission time interval TTI as the ACK/NACK feedback information;

Alternatively, the ACK/NACK indication information is transmitted in a transmission time interval TTI that is ahead of the ACK/NACK feedback information.
The terminal according to claim 49, wherein the ACK/NACK indication information and the ACK/NACK feedback information are transmitted on the same channel or different channels.
The terminal according to any one of claims 49 to 51, wherein if the ACK/NACK indication information and the ACK/NACK feedback information are transmitted in the same channel, the ACK/NACK indication information and the location The ACK/NACK feedback information is independently transmitted on different channels in the same time domain and frequency domain resources.
The terminal according to any one of claims 49 to 51, wherein if the ACK/NACK indication information and the ACK/NACK feedback information are transmitted in different channels, the processor is configured to:

Determining a first channel resource for transmitting the ACK/NACK indication information, instructing the transceiver to transmit the ACK/NACK indication information on the first channel resource;

Determining a second channel resource for transmitting the ACK/NACK feedback information, instructing the transceiver to transmit the ACK/NACK feedback information on the second channel resource, wherein the first channel resource and the second Channel resources are different.
The terminal according to claim 53, wherein the channel format for transmitting the ACK/NACK indication information is the same as or different from the channel format for transmitting the ACK/NACK feedback information.
The terminal of claim 53, wherein the processor is configured to:

Obtaining, by the network side, the first channel resource pre-configured by high layer signaling;

Or acquiring a first channel resource set pre-configured by the network side by using the high layer signaling, and determining, according to the bit field in the downlink control channel, at least one first channel resource in the first channel resource set.
The terminal according to any one of claims 49 to 51, wherein the ACK/NACK indication information is used to indicate the total number of bits of the ACK/NACK feedback information reported by the terminal or reported by the terminal. The total number of downlink transmissions corresponding to the ACK/NACK feedback information;

Or the ACK/NACK indication information indicates a total number of bits of the ACK/NACK feedback information on each carrier in the aggregated/activated carrier or each carrier in the aggregate/activated carrier of the terminal The total number of downlink transmissions corresponding to the ACK/NACK feedback information.
The terminal according to claim 56, wherein the ACK/NACK indication information is used to indicate the total number of bits of the ACK/NACK feedback information reported by the terminal or the ACK/ reported by the terminal. The total number of downlink transmissions corresponding to the NACK feedback information, where the processor is specifically configured to:

Generating ACK/NACK feedback information, using the number of bits of the ACK/NACK feedback information as the ACK/NACK indication information, or using the total number of downlink transmissions corresponding to the ACK/NACK feedback information as the ACK/NACK indication information ;or

Generating ACK/NACK feedback information, and selecting, as the ACK, a value that is not less than the number of bits of the ACK/NACK feedback information among the number of bits of the plurality of ACK/NACK feedback information pre-configured by the pre-defined or higher layer signaling /NACK indication information, or selecting a value not less than a total number of downlink transmissions corresponding to the ACK/NACK feedback information among a plurality of downlink transmission totals pre-configured or defined by the high-level signaling, as the ACK/NACK indication Information; or

Generating ACK/NACK feedback information for each aggregate/activated carrier, and multiplying the maximum number of bits of the ACK/NACK feedback information of each aggregate/activated carrier by the number of aggregated/activated carriers as the ACK/NACK The indication information, or the product of the maximum value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of each aggregation/activation carrier and the number of aggregated/activated carriers is used as the ACK/NACK indication information; or

Generating ACK/NACK feedback information, and using the middle finger of the downlink control channel corresponding to the ACK/NACK feedback information The number of ACK/NACK feedback information bits corresponding to the total number of downlink transmissions is used as the ACK/NACK indication information, or the total number of downlink transmissions is used as the ACK/NACK indication information;

If the ACK/NACK indication information indicates the total number of bits of the ACK/NACK feedback information on the carrier in the aggregated/activated carrier or the terminal is on each carrier in the aggregate/activated carrier The total number of downlink transmissions corresponding to the ACK/NACK feedback information, and the determining module is specifically configured to:

Generating ACK/NACK feedback information for each aggregate/activated carrier, and using the number of bits of the ACK/NACK feedback information of each aggregate/activated carrier as the indication information corresponding to the aggregated/activated carrier in the ACK/NACK indication information, Or the total number of downlink transmissions corresponding to the ACK/NACK feedback information of each aggregation/activation carrier is used as the indication information corresponding to the aggregation/activation carrier in the ACK/NACK indication information; or

Generating ACK/NACK feedback information for each aggregate/activated carrier, and selecting a number of bits not less than the number of bits of the ACK/NACK feedback information among the number of bits of the plurality of ACK/NACK feedback information pre-configured by the predefined or higher layer signaling a value, as the indication information corresponding to the ACK/NACK indication information corresponding to the aggregation/activation carrier, or selecting not less than the ACK/NACK feedback among the total number of downlink transmissions pre-configured in the predefined or higher layer signaling A value of the total number of downlink transmissions corresponding to the information, as the indication information corresponding to the aggregation/activation carrier in the ACK/NACK indication information.
The terminal according to claim 57, wherein the processor is specifically configured to:

Generating ACK/NACK feedback information according to a downlink allocation index DAI corresponding to a downlink transmission that feeds back ACK/NACK feedback information at the same time; or

The ACK/NACK feedback information is generated according to the transmission time interval TTI number and/or the process number and/or the carrier number of the downlink transmission that feeds back the ACK/NACK feedback information at the same time.
The terminal according to claim 57, wherein the processor is specifically configured to:

When the sequence length of the ACK/NACK feedback information is smaller than the total number of ACK/NACK bits indicated by the ACK/NACK indication information, or when the total number of downlink transmissions corresponding to the ACK/NACK feedback information is smaller than the ACK/ When the NACK indicates the total number of downlink transmissions indicated by the information, the NACK is added to the end of the sequence of the ACK/NACK feedback information until the sequence length of the ACK/NACK feedback information is equal to the ACK/NACK indicated by the ACK/NACK indication information. The total number of bits or the total number of ACK/NACK bits corresponding to the total number of downlink transmissions indicated by the ACK/NACK indication information;

When the number of bits of ACK/NACK feedback information of an aggregated/activated carrier is smaller than the maximum number of bits of ACK/NACK feedback information of each aggregated/activated carrier, or when ACK/NACK feedback of an aggregated/activated carrier When the total number of downlink transmissions corresponding to the information is smaller than the maximum value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of each aggregate/activated carrier, the end of the sequence of ACK/NACK feedback information of the aggregated/activated carrier is added. NACK, the sequence length of the ACK/NACK feedback information of the aggregate/activated carrier is equal to the maximum value of the number of bits of the ACK/NACK feedback information of each aggregate/activated carrier or the aggregation/activation carrier of each The total number of ACK/NACK bits corresponding to the maximum value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information;

When the sequence length of the ACK/NACK feedback information of an aggregate/activated carrier is smaller than the total number of ACK/NACK bits of the one aggregate/activated carrier indicated by the ACK/NACK indication information, or when an aggregate/activated carrier is used When the total number of downlink transmissions corresponding to the ACK/NACK feedback information is smaller than the total number of downlink transmissions of the one aggregated/activated carrier indicated by the ACK/NACK indication information, the ACK/NACK feedback information of the one aggregated/activated carrier NACK is added to the end of the sequence until the sequence length of the ACK/NACK feedback information of the one aggregate/activated carrier is equal to the total number of ACK/NACK bits of the one aggregate/activated carrier indicated by the ACK/NACK indication information or the The ACK/NACK indicates the total number of ACK/NACK bits corresponding to the total number of downlink transmissions of the one aggregate/activated carrier indicated by the information.
The terminal according to claim 57, wherein when there is ACK/NACK feedback required for the physical downlink shared channel without the corresponding downlink control channel, the total number of ACK/NACK bits indicated by the ACK/NACK indication information or The total number of downlink transmissions is increased by one.
A base station, comprising: a processor, a memory, and a transceiver, wherein the transceiver receives and transmits data under control of the processor, and the memory stores a preset program, the processor Read the preset program in the memory and follow the procedure to perform the following process:

Receiving, by the transceiver, the ACK/NACK indication information reported by the terminal, where the ACK/NACK indication information includes at least information for determining the number of bits of the ACK/NACK feedback information transmitted by the terminal;

And the ACK/NACK indication information is instructed by the transceiver to receive the ACK/NACK feedback information reported by the terminal.
The base station according to claim 61, wherein the ACK/NACK indication information is transmitted in the same transmission time interval TTI as the ACK/NACK feedback information;

Alternatively, the ACK/NACK indication information is transmitted in a transmission time interval TTI that is ahead of the ACK/NACK feedback information.
The base station according to claim 61, wherein said ACK/NACK indication information is transmitted on said same channel or in a different channel than said ACK/NACK feedback information.
The base station according to any one of claims 61 to 63, wherein the ACK/NACK indication information and the ACK/NACK indication information are transmitted if the ACK/NACK indication information and the ACK/NACK feedback information are transmitted in the same channel. The ACK/NACK feedback information is independently transmitted on different channels in the same time domain and frequency domain resources.
The base station according to any one of claims 61 to 63, wherein if the ACK/NACK indication information and the ACK/NACK feedback information are transmitted in different channels, the processor is specifically configured to:

Determining a first channel resource for transmitting the ACK/NACK indication information, instructing the transceiver to receive the ACK/NACK indication information on the first channel resource;

Determining a second channel resource for transmitting the ACK/NACK feedback information, indicating that the transceiver is in the second letter The ACK/NACK feedback information is received on a channel resource, where the first channel resource is different from the second channel resource.
The base station according to claim 65, wherein the channel format for transmitting the ACK/NACK indication information is the same as or different from the channel format for transmitting the ACK/NACK feedback information.
The base station according to claim 65, wherein the processor is specifically configured to:

Determining that the first channel resource is pre-configured to the terminal by the base station by using high layer signaling;

Or determining, by the base station, at least one first channel resource in the first channel resource set of the terminal that is indicated by the base station by using a bit field in a downlink control channel, where the first channel resource set is The base station is pre-configured to the terminal by high layer signaling.
The base station according to any one of claims 61 to 63, wherein the ACK/NACK indication information is used to indicate the total number of bits of the ACK/NACK feedback information reported by the terminal or reported by the terminal. The total number of downlink transmissions corresponding to the ACK/NACK feedback information;

Or the ACK/NACK indication information indicates a total number of bits of the ACK/NACK feedback information on each carrier in the aggregated/activated carrier or each carrier in the aggregate/activated carrier of the terminal The total number of downlink transmissions corresponding to the ACK/NACK feedback information.
The base station according to claim 68, wherein the ACK/NACK indication information is used to indicate the total number of bits of the ACK/NACK feedback information reported by the terminal or the ACK/ reported by the terminal. The total number of downlink transmissions corresponding to the NACK feedback information, where the processor is specifically configured to:

Determining, by the ACK/NACK indication information, a number of bits of the ACK/NACK feedback information, or the ACK/NACK indication information indicating a total number of downlink transmissions corresponding to the ACK/NACK feedback information; or

Determining that the ACK/NACK indication information indicates a value of a number of bits of the plurality of ACK/NACK feedback information pre-configured by the pre-defined or higher layer signaling that is not less than the number of bits of the ACK/NACK feedback information, or The ACK/NACK indication information indicates a value of not less than a total number of downlink transmissions corresponding to the ACK/NACK feedback information, which is a pre-defined or high-level signaling pre-configured plurality of downlink transmission totals; or

Determining that the ACK/NACK indication information indicates a product of a maximum value of the number of bits of ACK/NACK feedback information of each aggregate/activated carrier and a number of aggregated/activated carriers, or the ACK/NACK indication information indicates each aggregation /the product of the maximum number of downlink transmissions corresponding to the ACK/NACK feedback information of the active carrier and the number of aggregated/activated carriers; or

Determining, by the ACK/NACK indication information, the number of ACK/NACK feedback information bits or the total number of downlink transmissions corresponding to the total number of downlink transmissions indicated in the downlink control channel corresponding to the ACK/NACK feedback information;

If the ACK/NACK indication information indicates the total number of bits of the ACK/NACK feedback information on the carrier in the aggregated/activated carrier or the terminal is on each carrier in the aggregate/activated carrier The total number of downlink transmissions corresponding to the ACK/NACK feedback information, and the second receiving module is specifically configured to:

Determining that the ACK/NACK indication information includes indication information corresponding to each aggregation/activation carrier of the terminal, and indication information corresponding to an aggregation/activation carrier of the terminal indicates ACK/NACK feedback of one aggregation/activation carrier The number of bits of the information or the indication information corresponding to an aggregate/activated carrier of the terminal indicates the total number of downlink transmissions corresponding to the ACK/NACK feedback information of the one aggregated/activated carrier; or

Determining that the ACK/NACK indication information includes indication information corresponding to each aggregation/activation carrier of the terminal, and indication information corresponding to an aggregation/activation carrier of the terminal indicates multiple pre-defined or high-level signaling pre-configured A value of the number of bits of the ACK/NACK feedback information of the ACK/NACK feedback information that is not less than the number of bits of the ACK/NACK feedback information of the one ACK/NACK feedback information or an indication message corresponding to an aggregate/activated carrier of the terminal indicates a pre-defined or The total number of downlink transmissions pre-configured by the high layer signaling is not less than a value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of the one aggregation/activation carrier.
The base station according to claim 69, wherein said processor determines that said terminal generates ACK/NACK feedback information as follows:

Generating ACK/NACK feedback information according to a downlink allocation index DAI corresponding to a downlink transmission that feeds back ACK/NACK feedback information at the same time; or

The ACK/NACK feedback information is generated according to the transmission time interval TTI number and/or the process number and/or the carrier number of the downlink transmission that feeds back the ACK/NACK feedback information at the same time.
The base station according to claim 69, wherein the base station determines that the ACK/NACK indication information indicates not less than a number of bits of a plurality of ACK/NACK feedback information pre-configured in advance or higher layer signaling. a value of the number of bits of the ACK/NACK feedback information, or the ACK/NACK indication information indicating that the ACK/NACK feedback information is not less than the ACK/NACK feedback information of the plurality of downlink transmissions pre-configured by the predefined or higher layer signaling When the value of the corresponding total number of downlink transmissions is one, the processor determines that the terminal generates ACK/NACK feedback information according to the following manner:

When the sequence length of the ACK/NACK feedback information generated by the terminal according to the detected downlink transmission is smaller than the total number of ACK/NACK bits indicated by the ACK/NACK indication information, or the total number of downlink transmissions detected by the terminal When the total number of downlink transmissions indicated by the ACK/NACK indication information is smaller, the terminal supplements the NACK at the end of the sequence of the ACK/NACK feedback information until the sequence length of the ACK/NACK feedback information is equal to the ACK/NACK. Indicates the total number of ACK/NACK bits indicated by the indication information or the total number of ACK/NACK bits corresponding to the total number of downlink transmissions indicated by the ACK/NACK indication information;

When the base station determines that the ACK/NACK indication information indicates a product of a maximum number of bits of ACK/NACK feedback information of each aggregate/activated carrier and a number of aggregated/activated carriers, or the ACK/NACK indication information When indicating the product of the maximum value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of each aggregation/activation carrier and the number of aggregation/activation carriers, the processor determines that the terminal generates ACK/NACK feedback information as follows:

An ACK/NACK feedback message generated by the terminal on an aggregated/activated carrier according to the detected downlink transmission When the number of bits of the information is smaller than the maximum value of the number of bits of the ACK/NACK feedback information of each of the aggregated/activated carriers, or when the terminal detects the total number of downlink transmissions on one aggregate/activated carrier is smaller than each of the bits When the maximum value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of the aggregation/activation carrier is aggregated, the terminal supplements the NACK at the end of the sequence of the ACK/NACK feedback information of the aggregation/activation carrier until the aggregation/activation carrier The sequence length of the ACK/NACK feedback information is equal to the maximum value of the number of bits of the ACK/NACK feedback information of each of the aggregated/activated carriers or the downlink transmission corresponding to the ACK/NACK feedback information of each of the aggregated/activated carriers The total number of ACK/NACK bits corresponding to the maximum value of the total number;

When the eNB determines that the ACK/NACK indication information includes indication information corresponding to each aggregation/activation carrier of the terminal, the indication information corresponding to an aggregation/activation carrier of the terminal indicates a pre-defined or high-layer signaling advance. One of the number of bits of the configured ACK/NACK feedback information is not less than a value of the number of bits of the ACK/NACK feedback information of the one aggregated/activated carrier, or an indication corresponding to an aggregate/activated carrier of the terminal Determining, by the processor, the terminal, when the value of the total number of downlink transmissions corresponding to the ACK/NACK feedback information of the one aggregation/activation carrier is not less than a value of the total number of downlink transmissions pre-configured by the pre-defined or high-layer signaling Generate ACK/NACK feedback information as follows:

The sequence length of the ACK/NACK feedback information generated by the terminal according to the detected downlink transmission on an aggregate/activated carrier is smaller than the total ACK/NACK of the one aggregate/activated carrier indicated by the ACK/NACK indication information. When the number of bits, or when the total number of downlink transmissions detected by the terminal on one aggregate/activated carrier is smaller than the total number of downlink transmissions of the one aggregated/activated carrier indicated by the ACK/NACK indication information, the terminal is The sequence of ACK/NACK feedback information of the one aggregation/activation carrier is complemented with NACK until the sequence length of the ACK/NACK feedback information of the one aggregate/activated carrier is equal to the one indicated by the ACK/NACK indication information. The total number of ACK/NACK bits of the aggregated/activated carrier or the total number of ACK/NACK bits corresponding to the total number of downlink transmissions of the one aggregated/activated carrier indicated by the ACK/NACK indication information.
The base station according to claim 69, wherein when there is a physical downlink shared channel having no corresponding downlink control channel, ACK/NACK feedback is required, the processor determines the total ACK/NACK indicated by the ACK/NACK indication information. The number of bits including the ACK/ANCK feedback information of the physical downlink shared channel in the number of bits or the total number of downlink transmissions includes the physical downlink shared channel.