WO2016161782A1

WO2016161782A1 - Method and terminal for transmitting uplink control information

Info

Publication number: WO2016161782A1
Application number: PCT/CN2015/090796
Authority: WO
Inventors: 杨维维
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-04-10
Filing date: 2015-09-25
Publication date: 2016-10-13
Also published as: CN106160958A

Abstract

Disclosed are a method and terminal for transmitting uplink control information. The method comprises: when K-number of serving cells are aggregated, dividing serving cells to which feedback of HARQ-ACK response information is required into two categories: category one serving cells are serving cells to which the HARQ-ACK response information among the serving cells is bound, category two serving cells are serving cells to which the HARQ-ACK response information among the serving cells is not bound, acquiring the HARQ-ACK response information, where the HARQ-ACK response information consists of HARQ-ACK response information corresponding to the category two serving cells or HARQ-ACK response information corresponding to the category one serving cells and to the category two serving cells, and K is a positive integer greater than 0; and, transmitting the acquired HARQ-ACK response information by employing a PUCCH.

Description

Method and terminal for transmitting uplink control information

Technical field

The embodiments of the present invention relate to, but are not limited to, wireless communication technologies, and in particular, to a method and a terminal for transmitting uplink control information.

Background technique

A radio frame in a Long Term Evolution (LTE) system and an LTE-Advanced (LTE-A) system includes a Frequency Division Duplex (FDD) mode and a time division. Frame structure of the Time Division Duplex (TDD) mode. 1 is a schematic diagram of a frame structure in an LTE and LTE-A FDD system in the related art. As shown in FIG. 1, a 10 millisecond (ms) radio frame consists of twenty slots of length 0.5 to 0.5 and numbers 0 to 19 ( The slot 2 is composed of slots 2i and 2i+1 which constitute a subframe i having a length of 1 ms. 2 is a schematic diagram of a frame structure in an LTE and LTE-A TDD system in the related art. A 10 ms radio frame is composed of two half frames having a length of 5 ms, and one field includes five subframes having a length of 1 ms. The subframe i is defined as two slots 2i and 2i+1 having a length of 0.5 ms.

In the above two frame structures, for a normal Cyclic Prefix, one slot contains seven symbols with a length of 66.7 microseconds (us), wherein the CP (cyclic prefix) length of the first symbol is 5.21. Us, the CP length of the remaining 6 symbols is 4.69us; for the Extended Cyclic Prefix (Extended CP), one slot contains 6 symbols, and the CP length of all symbols is 16.67us. The supported uplink and downlink configurations are shown in Table 1:

Table 1

Wherein, for each subframe in a radio frame, "D" denotes a subframe dedicated for downlink transmission, "U" denotes a subframe dedicated for uplink transmission, and "S" denotes a special subframe, which includes downlink pilot The Downlink Pilot Time Slot (DwPTS), the Guard Period (GP) and the Uplink Pilot Time Slot (UpPTS) are three parts.

In the LTE system, in the FDD system, since the uplink and downlink subframes are one-to-one correspondence, when the PDSCH (Physical Downlink Shared Channel) contains only one transport block, the UE needs to feed back a 1-bit ACK (determination). Or NACK (negative) response information, when the PDSCH includes two transport blocks, the UE needs to feed back 2-bit ACK or NACK response information, and the UE transmits 1/2 using PUCCH (Physical Uplink Control Channel) format1a or 1b. Bit ACK or NACK response information. In the TDD system, the uplink and downlink subframes are not one-to-one, that is, the ACK or NACK response information corresponding to the multiple downlink subframes needs to be sent on the PUCCH channel of one uplink subframe, where the uplink subframe corresponds to the downlink. The set of sub-frames constitutes the "bundling window". There are two methods for sending ACK or NACK response information: one is the bundled method. The core idea of the method is to use the ACK or NACK of the transport block corresponding to each downlink subframe that needs to be fed back in the uplink subframe. The response information is logically ANDed. If a downlink subframe has 2 transport blocks, the UE should feed back 2 bits of ACK or NACK response information. If there is only one transport block per subframe, the UE should feed back 1 bit. ACK or NACK response information, the UE uses the PUCCH format 1a or 1b to transmit the 1/2 bit ACK or NACK response message; the other is the multiplexing (PUCCH format 1bwith channel selection) method, the core of the method The idea is to use different PUCCH channels and different modulation symbols on the channel to indicate different feedback states of the downlink subframes that need to be fed back in the uplink subframe. If there are multiple transport blocks on the downlink subframe, the downlink subframes are first used. The ACK or NACK fed back by the multiple transport blocks is logically ANDed, and then the channel is selected. The UE uses the format 1b with channel selection to send an ACK or NACK response message.

The most notable feature of the LTE-A system over the LTE system is that the LTE-A system introduces a carrier aggregation technology, that is, aggregates the bandwidth of the LTE system to obtain a larger bandwidth. In a system that introduces carrier aggregation, a carrier that performs aggregation is called a component carrier (CC), which is also called a serving cell. At the same time, the concept of a primary component carrier, a primary component (PCC/PCell) and a secondary component carrier, and a secondary component carrier (Cell, SCC/SCell) is also proposed. In the system in which carrier aggregation is performed, at least one primary serving cell and a secondary serving cell are included, wherein the primary serving cell is always in an active state, and the PUCCH is specified to be transmitted only on the Pcell.

In the LTE-A carrier aggregation system, when a HARQ (Hybrid Automatic Repeat Request)-ACK response message is transmitted on the PUCCH, two transmission modes are defined: PUCCH format 1b joint channel selection (Format 1b with channel) Selection) and PUCCH format 3 (PUCCH format 3). For a UE that configures multiple serving cells, if the UE can only support a maximum of two serving cells, the UE will transmit HARQ-ACK in a PUCCH format1b joint channel selection manner; if the UE can support more than two serving cells For the aggregation, the base station configures whether the UE transmits the HARQ-ACK response information by using PUCCH format 1b joint channel selection or PUCCH format 3 through high layer signaling. In the FDD system, PUCCH format3 adopts single Reed-Muller (RM) coding mode and supports up to 10 bits of HARQ-ACK transmission. In TDD system, PUCCH format3 adopts dual RM coding mode and supports up to 20 bits of HARQ-ACK transmission. . The TDD system also provides that when the number of HARQ-ACK bits to be transmitted is greater than 20, the HARQ-ACK to be transmitted is spatially bound and then transmitted using PUCCH format3.

In the related art, the PUCCH format 3 supports up to 20 bits of HARQ-ACK transmission. Considering the carrier aggregation technology supporting up to 32 serving cells in subsequent versions, the number of HARQ-ACK bits that need to be transmitted is far more than 10 bits or 20 bits, so that Send using PUCCH format3.

Summary of the invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

The embodiment of the invention provides a method for transmitting uplink control information and a terminal, so as to implement uplink control information transmission during aggregation of up to 32 serving cells.

An embodiment of the present invention provides a method for sending uplink control information, including:

When the K serving cells are aggregated, the serving cells that need the feedback HARQ-ACK response information are classified into two types: the first type of serving cell is a serving cell that performs HARQ-ACK response information binding between serving cells, and the second type of serving cell is The serving cell that does not perform the inter-cell HARQ-ACK response information binding acquires the HARQ-ACK response information, and the acquired HARQ-ACK response information is the HARQ-ACK response information corresponding to the second type of serving cell or The HARQ-ACK response information corresponding to the first type of serving cell and the HARQ-ACK response information corresponding to the second type of serving cell, where K is a positive integer greater than 0;

And acquiring the acquired HARQ-ACK response information by using a physical uplink control channel PUCCH.

Optionally, where the obtained HARQ-ACK response information is the HARQ-ACK response information corresponding to the second type of serving cell, the second type is obtained according to the binding manner of the second type of serving cell. The HARQ-ACK response information corresponding to the serving cell, the acquired HARQ-ACK response information is HARQ-ACK response information corresponding to the second type of serving cell.

Optionally, where the obtained HARQ-ACK response information is composed of the HARQ-ACK response information corresponding to the first type of serving cell and the HARQ-ACK response information corresponding to the second type of serving cell, Obtaining HARQ-ACK response information corresponding to the first type of serving cell according to a binding manner of the first type of serving cell, and obtaining the foregoing according to a binding manner of the second type of serving cell The HARQ-ACK response information corresponding to the second type of serving cell, or the HARQ-ACK response information corresponding to the second type of serving cell is a negative NACK, and the acquired HARQ-ACK response information is corresponding to the two types of serving cells. The HARQ-ACK response message is composed.

Optionally, the binding manner of the first type of serving cell includes: a HARQ-ACK response information spatial domain binding in the serving cell and a serving inter-cell HARQ-ACK response information binding.

Optionally, where the serving cell inter-cell HARQ-ACK response information binding includes:

And performing the AND operation on the HARQ-ACK response information of the first type of serving cell; or counting the number of ACKs in the HARQ-ACK response information of the first type of serving cell.

Optionally, the number of the HARQ-ACK response information corresponding to the first type of serving cell is a fixed value or a configurable value, or the HARQ-ACK response information corresponding to the second type of serving cell The number is a fixed value or a configurable value.

Optionally, the binding manner of the second type of serving cell includes: binding the HARQ-ACK response information in the serving cell to the air domain or not performing the air domain binding of the HARQ-ACK response information in the serving cell.

Optionally, wherein the serving cell that needs the feedback HARQ-ACK response information is divided into two categories according to one or more of the following:

a cell index corresponding to the serving cell;

The frequency corresponding to the serving cell;

a downlink allocation index in the downlink control information corresponding to the serving cell;

The scheduling mode corresponding to the serving cell.

Optionally, the downlink allocation index classification in the downlink control information corresponding to the serving cell includes: a serving cell that is allocated to the physical downlink shared channel PDSCH that has been sent by the current serving cell, and a PDCCH that is released by the semi-persistent scheduling. The number is classified or classified according to the number of serving cells that are accumulated to the physical downlink shared channel PDSCH that the current serving cell has transmitted.

Optionally, the classifying according to the scheduling manner corresponding to the serving cell includes: when multiple serving cells are scheduled by using the same downlink control information, the multiple serving cells are classified into the same class.

Optionally, where the serving cell of the HARQ-ACK response information that needs to be fed back comprises: an aggregated serving cell or an activated serving cell.

The embodiment of the invention further provides a terminal, which includes:

The acquiring module is configured to aggregate the serving cells of the HARQ-ACK response information into two types when the K serving cells are aggregated: the first type of serving cell is a serving cell that performs HARQ-ACK response information binding between serving cells, The second type of serving cell is a serving cell that does not perform the inter-cell HARQ-ACK response information binding, and obtains the HARQ-ACK response information, and the acquired HARQ-ACK response information is the HARQ-ACK response corresponding to the second type of serving cell. The information is either composed of HARQ-ACK response information corresponding to the first type of serving cell and HARQ-ACK response information corresponding to the second type of serving cell, where K is a positive integer greater than 0;

The sending module is configured to send the acquired HARQ-ACK response information by using a physical uplink control channel PUCCH.

Optionally, where the HARQ-ACK response information acquired by the acquiring module is the HARQ-ACK response information corresponding to the second type of serving cell, the obtaining module is configured according to the binding manner of the second type of serving cell Obtaining HARQ-ACK response information corresponding to the second type of serving cell, where the acquired HARQ-ACK response information is HARQ-ACK response information corresponding to the second type of serving cell.

Optionally, the HARQ-ACK response information acquired by the acquiring module is composed of the HARQ-ACK response information corresponding to the first type of serving cell and the HARQ-ACK response information corresponding to the second type of serving cell. The obtaining module obtains the HARQ-ACK response information corresponding to the first type of serving cell according to the binding manner of the first type of serving cell, and obtains the second type of serving cell according to the binding manner of the second type of serving cell. The corresponding HARQ-ACK response information, or the HARQ-ACK response information corresponding to the second type of serving cell is a NACK, and the acquired HARQ-ACK response information is composed of HARQ-ACK response information corresponding to the two types of serving cells. .

Optionally, the binding manner of the first type of serving cell includes: a HARQ-ACK response information spatial domain binding in a serving cell and a HARQ-ACK response information binding between serving cells, where And performing the HARQ-ACK response information binding between the serving cells, including: performing HARQ-ACK response information of the first type of serving cell, or performing HARQ-ACK response information of the first type of serving cell. The number of the ACKs in the first type of the serving cell is a fixed value or a configurable value, or the number of HARQ-ACK response information corresponding to the second type of serving cell Is a fixed value or a configurable value.

Optionally, the acquiring module divides the serving cells of the HARQ-ACK response information that need to be fed back into two types according to one or more of the following: a cell index corresponding to the serving cell; and a frequency corresponding to the serving cell. Point; a downlink allocation index in the downlink control information corresponding to the serving cell; a scheduling mode corresponding to the serving cell.

Optionally, the obtaining, by the acquiring module, the downlink allocation index according to the downlink control information corresponding to the serving cell includes: the serving module and the half according to the physical downlink shared channel PDSCH that has been sent by the acquiring module to the current serving cell. The number of PDCCHs that are continuously scheduled to be released is classified or classified according to the number of serving cells that are accumulated to the physical downlink shared channel PDSCH that the current serving cell has transmitted.

Optionally, the obtaining, by the acquiring module, according to the scheduling manner corresponding to the serving cell, includes: when the multiple serving cells are scheduled by using the same downlink control information, the acquiring module divides the multiple serving cells into the same class.

The embodiment of the invention further provides a computer readable storage medium storing program instructions, which can be implemented when the program instructions are executed.

In summary, the embodiment of the present invention provides a method and a terminal for transmitting uplink control information, which can solve the problem of sending uplink control information when K serving cells are aggregated.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

BRIEF abstract

1 is a schematic diagram of a frame structure in a related art FDD system;

2 is a schematic diagram of a frame structure in a related art TDD system;

FIG. 3 is a flowchart of a method for sending uplink control information according to an embodiment of the present invention;

4 is a schematic diagram of Embodiment 1 of the present invention;

Figure 5 is a schematic diagram of Embodiment 3 of the present invention;

Figure 6 is a schematic diagram of Embodiment 4 of the present invention;

7 and FIG. 8 are schematic diagrams of Embodiment 5 of the present invention;

9 is a schematic diagram of DAI values corresponding to each serving cell according to Embodiment 6 of the present invention;

10 is a schematic diagram of DAI values corresponding to each serving cell according to Embodiment 7 of the present invention;

11 is a schematic diagram of DAI values corresponding to each serving cell according to Embodiment 8 of the present invention;

FIG. 12 is a schematic diagram of a terminal according to an embodiment of the present invention.

Embodiments of the invention

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments of the present invention may be arbitrarily combined with each other.

FIG. 3 is a flowchart of a method for sending uplink control information according to an embodiment of the present invention. As shown in FIG. 3, the method in this embodiment includes the following steps:

Step 102: When the K serving cells are aggregated, the serving cells that need to be fed back HARQ-ACK response information (or simply referred to as HARQ-ACK information, which is a collective name of the feedback message, including ACK and NACK) are classified into two categories: The serving cell that performs the inter-cell HARQ-ACK response information binding, and the second type is the serving cell that does not perform the inter-cell HARQ-ACK response information binding, obtains the HARQ-ACK response information, and obtains the HARQ-ACK response information. And the HARQ-ACK response information corresponding to the second type of serving cell or the HARQ-ACK response information corresponding to the first type of serving cell and the HARQ-ACK response information corresponding to the second type of serving cell, where K Is a positive integer greater than 0;

Step 202: Send the obtained HARQ-ACK response information by using PUCCH format 3.

Optionally, the sent HARQ-ACK response information is corresponding to the second type of serving cell. The HARQ-ACK response information is: the HARQ-ACK response information corresponding to the second type of serving cell is obtained according to the binding manner of the second type of serving cell, and the acquired HARQ-ACK response information is corresponding to the second type of serving cell. HARQ-ACK response information;

Optionally, the obtained HARQ-ACK response information is that the HARQ-ACK response information corresponding to the first type of serving cell and the HARQ-ACK response information corresponding to the second type of serving cell are: according to the first type of serving cell The binding mode of the HARQ-ACK response information corresponding to the first type of serving cell is obtained, and the HARQ-ACK response information corresponding to the second type of serving cell is obtained according to the binding manner of the second type of serving cell, or the second type of serving cell The corresponding HARQ-ACK response information is a NACK, and the acquired HARQ-ACK response information is composed of HARQ-ACK response information corresponding to the two types of serving cells.

The binding manner of the first type includes: a HARQ-ACK response information air domain binding in a serving cell and a HARQ-ACK response information binding between serving cells;

The binding of the HARQ-ACK response information between the serving cells refers to performing and operating the HARQ-ACK response information of the first type of serving cell; or counting the number of ACKs in the HARQ-ACK response information of the first type of serving cell;

And the number of the HARQ-ACK response information corresponding to the first type of the serving cell is a fixed value or is configurable. The value, or the number of HARQ-ACK response information corresponding to the second type of serving cell, is a fixed value or a assignable value.

The second type of binding mode includes: binding the HARQ-ACK response information in the serving cell to the air domain or not performing the air domain binding of the HARQ-ACK response information in the serving cell;

The serving cell that needs the feedback HARQ-ACK response information is classified into two types according to one or more of the following: a cell index corresponding to the serving cell, a frequency point corresponding to the serving cell, and a downlink control corresponding to the serving cell. Downlink Assignment Indicator (DAI) in the information, the scheduling mode corresponding to the serving cell,

Optionally, the serving cells corresponding to the first type and the second type in each subframe may be the same or different, and the eNB (base station) and the UE (user) agree in advance;

Optionally, the DAI classification in the downlink control information corresponding to the serving cell includes: According to the number of PDCCHs that are accumulated to the serving cell and the SPS (semi-persistent scheduling) released by the current serving cell, or the number of serving cells that are transmitted to the physical downlink shared channel PDSCH that has been transmitted by the current serving cell. sort.

Optionally, when the scheduling mode is multi-subframe scheduling, the serving cell scheduled by the same downlink control information is in a class.

The serving cell of the HARQ-ACK response information that needs to be fed back refers to an aggregated serving cell or an activated serving cell.

The method of the embodiment of the present invention will be described in detail below by way of examples.

Assuming that 32 serving cells are aggregated, the HARQ-ACK information is transmitted using PUCCH format 3 (Reed-Muller), that is, the transmitted HARQ-ACK information is 20 bits. The transmitted 20-bit HARQ-ACK information is HARQ-ACK information corresponding to the second type of serving cell, and the UE transmits 20-bit HARQ-ACK information using PUCCH format 3.

Embodiment 1

In this embodiment, the 20-bit HARQ-ACK information in this embodiment is the HARQ-ACK information corresponding to the second type of serving cell, and the 20-bit HARQ-ACK information in this embodiment is the HARQ-ACK response information corresponding to the 20 serving cells. As shown in FIG. 4, it is assumed that {CC#0, CC#1, CC#2, ..., CC#19} is the second type of serving cell, then {HARQ-ACK(0), HARQ-ACK(1), HARQ-ACK (2), ..., HARQ-ACK (19)} is HARQ-ACK response information corresponding to {CC#0, CC#1, CC#2, ..., CC#19}; the UE transmits using PUCCH format3 { HARQ-ACK (0), HARQ-ACK (1), HARQ-ACK (2), ..., HARQ-ACK (19)}.

In the manner of this embodiment, it is possible to transmit the HARQ-ACK response information under the aggregation of up to 32 carriers using PUCCH format 3.

Embodiment 2

In this embodiment, the 20-bit HARQ-ACK information in this embodiment is the HARQ-ACK information corresponding to the second type of serving cell, and the 20-bit HARQ-ACK information in this embodiment is the HARQ-ACK response information corresponding to the 20 serving cells. , assuming {CC#0, CC#1, CC#2,..., CC#19} is a second type of serving cell and corresponds to 2 codeword streams on each serving cell, then {HARQ-ACK(0), HARQ-ACK(1), HARQ-ACK(2), ..., HARQ- ACK(19)} is {CC#0, CC#1, CC#2, ..., CC#19} HARQ-ACK response information after spatial binding.

The UE transmits {HARQ-ACK (0), HARQ-ACK (1), HARQ-ACK (2), ..., HARQ-ACK (19)} using PUCCH format 3.

It is assumed that 32 serving cells are aggregated, and the HARQ-ACK information is transmitted by using PUCCH format3 (double RM), that is, the transmitted HARQ-ACK information is 20 bits, and the transmitted 20-bit HARQ-ACK information is corresponding to the first type and the second type of serving cell. The HARQ-ACK information is composed, and the UE transmits 20-bit HARQ-ACK information using PUCCH format 3.

Embodiment 3

In this embodiment, it is assumed that the number of HARQ-ACK information corresponding to the first type of serving cell is fixed to 1, because the transmitted 20-bit HARQ-ACK information is composed of HARQ-ACK information corresponding to the first type and the second type of serving cell, The number of the HARQ-ACK information corresponding to the first type of serving cell is fixed to 1. The HARQ-ACK information corresponding to the second type of serving cell in this embodiment is the HARQ-ACK information corresponding to the 19 serving cells, and the first type of serving cell The corresponding HARQ-ACK information is used to perform HARQ-ACK information for the remaining 13 serving cells corresponding to the HARQ-ACK response information, as shown in FIG. 5, {HARQ-ACK(0), HARQ-ACK(1) , HARQ-ACK (2), ..., HARQ-ACK (18)} is HARQ-ACK response information corresponding to {CC#0, CC#1, CC#2, ..., CC#18}; {CC#19 , CC#20, CC#21, ..., CC#31} corresponding HARQ-ACK response information is obtained and operated to obtain 1-bit HARQ-ACK (19), or NACK is represented by {CC#19, CC#20, CC# 21, ..., CC#31} corresponding HARQ-ACK information.

If each serving cell corresponds to two downlink codewords, the binding in the serving cell is performed first, and then the binding between the serving cells is performed.

Embodiment 4:

In this embodiment, it is assumed that the number of HARQ-ACK information corresponding to the first type of serving cell is configured as 4, because the transmitted 20-bit HARQ-ACK information is composed of HARQ-ACK information corresponding to the first type and the second type of serving cell, The number of the HARQ-ACK information corresponding to the first type of serving cell is fixed to 4, so the HARQ-ACK information corresponding to the second type of serving cell in this embodiment is the HARQ-ACK information corresponding to the 16 serving cells, and the first type of serving cell Corresponding HARQ-ACK information is used to perform HARQ-ACK information for the remaining 16 serving cells corresponding to the HARQ-ACK response information, as shown in FIG. 6, {HARQ-ACK(0), HARQ-ACK(1) , HARQ-ACK (2), ..., HARQ-ACK (15)} is HARQ-ACK response information corresponding to {CC#0, CC#1, CC#2, ..., CC#17}; 4 bits {HARQ- ACK (16), HARQ-ACK (17), HARQ-ACK (18), HARQ-ACK (19)} indicate HARQ corresponding to statistics {CC#16, CC#1, CC#17, ..., CC#31} - The number of ACKs in the ACK response information. As shown in Table 2, the UE transmits {HARQ-ACK(0), HARQ-ACK(1), HARQ-ACK(2), ..., HARQ-ACK (19) using PUCCH format3. )}.

Table 2

In the manner of the embodiment, the HARQ-ACK response information sent by using up to 32 carrier aggregations in the PUCCH format 3 can be implemented, and 32 serving cell aggregations are assumed, and the HARQ-ACK information is transmitted by using the PUCCH format 3 (single RM), that is, the HARQ-ACK transmitted. The information is 10 bits. The transmitted 10-bit HARQ-ACK information is composed of HARQ-ACK information corresponding to the second type of serving cell, and the UE transmits 10-bit HARQ-ACK information using PUCCH format 3.

Embodiment 5

In this embodiment, the 10-bit HARQ-ACK information of the present embodiment is the HARQ-ACK information corresponding to the 10 serving cells, because the transmitted 10-bit HARQ-ACK information is the HARQ-ACK information corresponding to the second type of serving cell. The second type of serving cell is determined according to the cell index or the frequency point corresponding to the serving cell, that is, 10 serving cells are selected according to the serving cell index. As shown in FIG. 7 , in this embodiment, 10 serving cells are continuously selected, and The rule discrete selection, as shown in Figure 8, selects the serving cell {CC#0, CC#1, ..., CC#9} on subframe #n, selects the serving cell {CC#10 on subframe #n+1 , CC#11,...,#CC19}, select the serving cell {CC#20, CC#21, ..., CC#29} on subframe #n+2; the selected serving cell is different in each subframe, and each guaranteed The serving cells correspond to the same HARQ-ACK response information transmission opportunity. The eNB and the UE agree in advance how to select each subframe.

The HARQ-ACK information transmitted by the subframe #n PUCCH format3 is the HARQ-ACK response information corresponding to the serving cell {CC#0, CC#1, ..., CC#9}, and the HARQ transmitted by the PUCCH format3 on the subframe #n+1. The ACK information is the HARQ-ACK response information corresponding to the serving cell {CC#10, CC#11, ..., #CC19}, and the HARQ-ACK information transmitted by the PUCCH format3 on the subframe #n+2 is the serving cell {CC#20 , CC#21, ..., #CC29} corresponding HARQ-ACK response information.

The serving cell selected on each subframe is different, and the probability that each serving cell separately transmits HARQ-ACK information can be guaranteed to be the same.

Embodiment 6

In this embodiment, the 10-bit HARQ-ACK information of the present embodiment is the HARQ-ACK information corresponding to the 10 serving cells, because the transmitted 10-bit HARQ-ACK information is the HARQ-ACK information corresponding to the second type of serving cell. Determining the second type of serving cell according to the DAI corresponding to the serving cell, assuming that the DAI is 5 bits, and the DAI value corresponding to each serving cell is as shown in FIG. 9, and 10 corresponding HARQs are selected on the subframe #n according to the value of the DAI. - ACK response information, that is, the HARQ-ACK response information of the PDCCH corresponding to the PDSCH whose DAI is equal to 1 to 9 is selected, and the HARQ-ACK information transmitted by the PUCCH format 3 is the HARQ-ACK response information of the PDCCH corresponding to the PDSCH whose DAI is equal to 1 to 9.

According to the DAI, it is ensured that the HARQ-ACK response information corresponding to the scheduled serving cell is transmitted.

Example 7

In this embodiment, the 10-bit HARQ-ACK information of the present embodiment is the HARQ-ACK information corresponding to the 10 serving cells, because the transmitted 10-bit HARQ-ACK information is the HARQ-ACK information corresponding to the second type of serving cell. Determining a second type of serving cell according to the DAI corresponding to the serving cell;

Assuming that the DAI is 5 bits, the DAI value corresponding to each serving cell is as shown in FIG. 10, which can be obtained from the figure. The UE does not receive the PDCCH and PDSCH corresponding to DAI=9, then the PUCCH The HARQ-ACK information {8} in the HARQ information transmitted by format3 is NACK.

Example eight

In this embodiment, the 10-bit HARQ-ACK information of the present embodiment is the HARQ-ACK information corresponding to the 10 serving cells, because the transmitted 10-bit HARQ-ACK information is the HARQ-ACK information corresponding to the second type of serving cell. Determining the second type of serving cell according to the value of the DAI and the serving cell index in the downlink control information corresponding to each serving cell, assuming that the DAI is 2 bits, and the DAI value corresponding to each serving cell is as shown in FIG. Starting with cell index 0 and the first DAI=1, 10-bit HARQ-ACK response information is selected. The selection may be different according to the serving cell index and the DAI in each subframe, for example, subframe 0 starts from the first DAI=1 starting from the serving cell index 0, and subframe 1 starts from the first DAI starting from the serving cell 5. .

The HARQ-ACK information transmitted by the PUCCH format 3 is the HARQ-ACK response information described above.

In the embodiment, the serving cell index number may be the same for each subframe, or may be performed based on the subframe. The interlace number refers to the index interlace number corresponding to the secondary serving cell or the scheduled serving cell. Narration.

FIG. 12 is a schematic diagram of a terminal according to an embodiment of the present invention. As shown in FIG. 12, the terminal in this embodiment includes:

The obtaining module 1201 is configured to split the serving cells of the HARQ-ACK response information that need to be fed back into two types when the K serving cells are aggregated: the first type of serving cell is a serving cell that performs HARQ-ACK response information binding between serving cells. The second type of serving cell is a serving cell that does not perform the inter-cell HARQ-ACK response information binding, and obtains the HARQ-ACK response information, where the acquired HARQ-ACK response information is the HARQ-ACK corresponding to the second type of serving cell. The response information is composed of HARQ-ACK response information corresponding to the first type of serving cell and HARQ-ACK response information corresponding to the second type of serving cell, where K is a positive integer greater than 0;

The sending module 1202 is configured to send the acquired HARQ-ACK response information by using a physical uplink control channel (PUCCH).

In an optional embodiment, the HARQ-ACK response information acquired by the obtaining module 1201 is obtained. The HARQ-ACK response information corresponding to the second type of serving cell is obtained by the acquiring module 1201, according to the binding manner of the second type of serving cell, the HARQ-ACK response information corresponding to the second type of serving cell. The obtained HARQ-ACK response information is HARQ-ACK response information corresponding to the second type of serving cell.

In an optional embodiment, the HARQ-ACK response information acquired by the acquiring module 1201 is the HARQ-ACK response information corresponding to the first type of serving cell and the HARQ-ACK response corresponding to the second type of serving cell. The information component is that the obtaining module 1201 obtains the HARQ-ACK response information corresponding to the first type of serving cell according to the binding manner of the first type of serving cell, and obtains the foregoing according to the binding manner of the second type of serving cell. The HARQ-ACK response information corresponding to the second type of serving cell, or the HARQ-ACK response information corresponding to the second type of serving cell is NACK, and the acquired HARQ-ACK response information is HARQ- corresponding to the two types of serving cells. The ACK response message is composed.

In an optional embodiment, the binding manner of the first type of serving cell includes: a HARQ-ACK response information spatial domain binding and a serving inter-cell HARQ-ACK response information binding in a serving cell, where the serving cell The inter-HARQ-ACK response information binding includes: performing AND operation on the HARQ-ACK response information of the first type of serving cell; or counting the number of ACKs in the HARQ-ACK response information of the first type of serving cell, The number of the HARQ-ACK response information corresponding to the first type of the serving cell is a fixed value or a configurable value, or the number of the HARQ-ACK response information corresponding to the second type of serving cell is a fixed value or is Match value.

In an optional embodiment, the binding manner of the second type of serving cell includes: binding the HARQ-ACK response information in the serving cell to the air domain or not performing the air domain binding of the HARQ-ACK response information in the serving cell.

In an optional embodiment, the acquiring module 1201 classifies the serving cells of the HARQ-ACK response information that need to be fed back into two types according to one or more of the following: a cell index corresponding to the serving cell; a serving cell The corresponding frequency point; the downlink allocation index in the downlink control information corresponding to the serving cell; and the scheduling mode in the downlink control information corresponding to the serving cell.

In an optional embodiment, the obtaining, by the obtaining module 1201, the downlink allocation index in the downlink control information corresponding to the serving cell may include: the acquiring module 1201 is configured to transmit the physical downlink shared channel (PDSCH) that has been sent to the current serving cell. Service area and semi-continuous adjustment The number of released PDCCHs is classified or classified according to the number of serving cells that are accumulated to the PDSCH transmission that the current serving cell has transmitted.

In an optional embodiment, the obtaining, by the acquiring module 1201, the scheduling manner according to the serving cell may include: when the multiple serving cells are scheduled by using the same downlink control information, the acquiring module 1201 divides the multiple serving cells. For the same class.

The system to which the embodiments of the present invention are applied is not limited to the LTE system.

One of ordinary skill in the art will appreciate that all or a portion of the steps described above can be accomplished by a program that instructs the associated hardware, such as a read-only memory, a magnetic or optical disk, and the like. Alternatively, all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the foregoing embodiment may be implemented in the form of hardware or in the form of a software function module. Embodiments of the invention are not limited to any specific form of combination of hardware and software.

Industrial applicability

The embodiment of the invention provides a method for transmitting uplink control information and a terminal, which can solve the problem of sending uplink control information when K serving cells are aggregated.

Claims

A method for transmitting uplink control information includes:

When the K serving cells are aggregated, the serving cells that need to feed back the hybrid automatic repeat request HARQ-ACK response information are divided into two categories: the first type of serving cell is a serving cell that performs HARQ-ACK response information binding between serving cells, The second type of serving cell is a serving cell that does not perform the inter-cell HARQ-ACK response information binding, and obtains the HARQ-ACK response information, and the acquired HARQ-ACK response information is the HARQ-ACK response corresponding to the second type of serving cell. The information is formed by the HARQ-ACK response information corresponding to the first type of serving cell and the HARQ-ACK response information corresponding to the second type of serving cell, where K is a positive integer greater than 0;

And acquiring the acquired HARQ-ACK response information by using a physical uplink control channel PUCCH.
The method of claim 1 wherein:

The obtained HARQ-ACK response information is the HARQ-ACK response information corresponding to the second type of serving cell, and the HARQ-ACK corresponding to the second type of serving cell is obtained according to the binding manner of the second type of serving cell. ACK response information, the acquired HARQ-ACK response information is HARQ-ACK response information corresponding to the second type of serving cell.
The method of claim 1 wherein:

The obtained HARQ-ACK response information is composed of the HARQ-ACK response information corresponding to the first type of serving cell and the HARQ-ACK response information corresponding to the second type of serving cell, according to the first type of serving cell. Obtaining the HARQ-ACK response information corresponding to the first type of serving cell according to the binding manner of the second type of serving cell, or obtaining the HARQ-ACK response information corresponding to the second type of serving cell, or the The HARQ-ACK response information corresponding to the two types of serving cells is a negative NACK, and the acquired HARQ-ACK response information is composed of HARQ-ACK response information corresponding to the two types of serving cells.
The method of claim 3 wherein:

The binding manner of the first type of serving cell includes: a HARQ-ACK response information spatial domain binding in a serving cell and a HARQ-ACK response information binding between serving cells.
The method of claim 4 wherein: said inter-cell HARQ-ACK response Information binding includes:

Performing AND operation on the HARQ-ACK response information of the first type of serving cell; or counting the number of ACKs in the HARQ-ACK response information of the first type of serving cell.
The method of claim 3 wherein:

The number of HARQ-ACK response information corresponding to the first type of serving cell is a fixed value or a configurable value, or

The number of HARQ-ACK response information corresponding to the second type of serving cell is a fixed value or a assignable value.
The method of claim 2 or 3 wherein:

The binding manner of the second type of serving cell includes: binding the HARQ-ACK response information in the serving cell to the air domain or not performing the air domain binding of the HARQ-ACK response information in the serving cell.
The method of claim 1, wherein said dividing the serving cells of the HARQ-ACK response information requiring feedback into two categories is classified according to one or more of the following:

a cell index corresponding to the serving cell;

The frequency corresponding to the serving cell;

a downlink allocation index in the downlink control information corresponding to the serving cell;

The scheduling mode corresponding to the serving cell.
The method of claim 8 wherein:

The classifying the downlink allocation index in the downlink control information corresponding to the serving cell includes: classifying or according to the number of PDCCHs allocated to the serving cell and the semi-persistent scheduling released by the physical downlink shared channel PDSCH that has been sent by the current serving cell The number of serving cells allocated to the PDSCH that the current serving cell has transmitted is accumulated and classified.
The method of claim 8, wherein the classifying according to a scheduling manner corresponding to the serving cell comprises:

When multiple serving cells are scheduled by the same downlink control information, the multiple serving cells are classified into the same class.
The method of any of claims 1-6 or 8-10, wherein: said feedback is required The serving cell of the HARQ-ACK response message includes:

Aggregated serving cell or activated serving cell.
A terminal comprising:

The acquisition module is configured to aggregate the service cells of the hybrid automatic repeat request response HARQ-ACK response information into two categories when the K service cells are aggregated: the first type of serving cell is configured to perform HARQ-ACK response information between serving cells. The serving cell of the second type is the serving cell that does not perform the HARQ-ACK response information binding between the serving cells, and obtains the HARQ-ACK response information, and the obtained HARQ-ACK response information is the second type of serving cell. Corresponding HARQ-ACK response information or the HARQ-ACK response information corresponding to the first type of serving cell and the HARQ-ACK response information corresponding to the second type of serving cell, where K is a positive integer greater than 0;

The sending module is configured to send the acquired HARQ-ACK response information by using a physical uplink control channel PUCCH.
The terminal of claim 12 wherein:

The obtaining, by the acquiring module, the HARQ-ACK response information is the HARQ-ACK response information corresponding to the second type of serving cell, the obtaining module obtaining the second class according to the binding manner of the second type of serving cell The HARQ-ACK response information corresponding to the serving cell, the acquired HARQ-ACK response information is HARQ-ACK response information corresponding to the second type of serving cell.
The terminal of claim 12 wherein:

The HARQ-ACK response information acquired by the acquiring module is composed of the HARQ-ACK response information corresponding to the first type of serving cell and the HARQ-ACK response information corresponding to the second type of serving cell, where the acquiring module is Obtaining HARQ-ACK response information corresponding to the first type of serving cell according to a binding manner of the first type of serving cell, and obtaining a HARQ-ACK response corresponding to the second type of serving cell according to a binding manner of the second type of serving cell The information, or the HARQ-ACK response information corresponding to the second type of serving cell is a negative NACK, and the acquired HARQ-ACK response information is composed of HARQ-ACK response information corresponding to the two types of serving cells.
The terminal of claim 14 wherein:

The binding manner of the first type of serving cell includes: a HARQ-ACK response message in the serving cell The inter-cell-to-cell HARQ-ACK response information binding includes: performing the HARQ-ACK response information of the first type of serving cell to perform an operation; Or, the number of the ACKs in the HARQ-ACK response information of the first type of the serving cell is determined, and the number of the HARQ-ACK response information corresponding to the first type of the serving cell is a fixed value or a configurable value, or The number of HARQ-ACK response information corresponding to the second type of serving cell is a fixed value or a assignable value.
A terminal according to claim 13 or 14, wherein:

The binding manner of the second type of serving cell includes: binding the HARQ-ACK response information in the serving cell to the air domain or not performing the air domain binding of the HARQ-ACK response information in the serving cell.
The terminal of claim 12 wherein:

The acquiring module classifies the serving cells of the HARQ-ACK response information that need to be fed back into two types according to one or more of the following: a cell index corresponding to the serving cell; a frequency point corresponding to the serving cell; and a corresponding corresponding to the serving cell The downlink allocation index in the downlink control information; the scheduling mode corresponding to the serving cell.
The terminal of claim 17 wherein:

The obtaining, by the acquiring module, the downlink allocation index according to the downlink control information corresponding to the serving cell includes: the acquiring module accumulating the serving cell that is transmitted to the physical downlink shared channel PDSCH that has been sent by the current serving cell, and the PDCCH of the semi-persistent scheduling release. The number is classified or classified according to the number of serving cells that are accumulated to the PDSCH transmission that the current serving cell has transmitted.
The terminal of claim 17 wherein:

The obtaining module according to the scheduling manner corresponding to the serving cell includes: when the multiple serving cells are scheduled by the same downlink control information, the acquiring module divides the multiple serving cells into the same class.
A computer readable storage medium storing program instructions that, when executed, implement the method of any of claims 1-11.