CN110830204B

CN110830204B - PUCCH sending method, PUCCH receiving method, terminal and base station

Info

Publication number: CN110830204B
Application number: CN201810909101.9A
Authority: CN
Inventors: 高雪娟
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2018-08-10
Filing date: 2018-08-10
Publication date: 2022-04-15
Anticipated expiration: 2038-08-10
Also published as: WO2020029878A1; CN110830204A

Abstract

The invention provides a PUCCH sending method, a PUCCH receiving method, a terminal and a base station, wherein the PUCCH sending method comprises the following steps: receiving at least two downlink transmissions, wherein HARQ-ACK of the at least two downlink transmissions are transmitted in the same time unit; determining PUCCH resources used for transmitting HARQ-ACK of the at least two downlink transmissions according to PUCCH resources indicated by PRI in downlink control information DCI used by the at least two downlink transmissions respectively corresponding to PDCCH; and sending the corresponding downlink transmission HARQ-ACK on the determined PUCCH resource, thereby realizing quick HARQ-ACK feedback and reducing HARQ-ACK feedback time delay.

Description

PUCCH sending method, PUCCH receiving method, terminal and base station

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a transmission method, a reception method, a terminal, and a base station for a Physical Uplink Control CHannel (PUCCH).

Background

In a wireless communication system, in consideration of complexity of implementation and standardization, currently, only one PUCCH carrying HARQ-ACK (Hybrid Automatic Repeat reQuest Acknowledgement) is supported to be transmitted in one time slot, and it can only be determined that a plurality of HARQ-ACKs required to be transmitted in the same time slot are all transmitted on the same PUCCH according to a feedback timing. For example, HARQ-ACKs of one or more PDSCHs (Physical Downlink shared channels) requiring HARQ-ACK feedback in the same Time slot and/or HARQ-ACKs of a PDCCH (Physical Downlink Control CHannel) indicating release of Downlink SPS (Semi-persistent Scheduling) resources are transmitted only on the same PUCCH, that is, HARQ-ACKs are transmitted by a plurality of PUCCHs that do not support TDM (Time Division Multiplexing) differentiation in the Time slot.

Thus, if the HARQ-ACK of the downlink transmission temporally compared with the previous transmission needs to be transmitted in the same PUCCH as the HARQ-ACK of the subsequent downlink transmission, the time domain position of the PUCCH to be transmitted needs to satisfy the processing delay of the last downlink transmission, and the HARQ-ACK of the downlink transmission temporally compared with the previous transmission needs to be also transmitted in the PUCCH at the later time domain position in the transmission HARQ-ACK slot determined according to the feedback timing.

It can be seen that the current method for transmitting PUCCH carrying HARQ-ACK easily causes the feedback delay of HARQ-ACK to increase.

Disclosure of Invention

In view of this, the present invention provides a PUCCH sending method, a PUCCH receiving method, a terminal and a base station, so as to solve the problem that the current PUCCH carrying HARQ-ACK is transmitted, which easily causes an increase in feedback delay of HARQ-ACK transmitted earlier in time.

In order to solve the above technical problem, the present invention provides a PUCCH transmission method applied to a terminal, including:

receiving at least two downlink transmissions, wherein HARQ-ACK of the at least two downlink transmissions are transmitted in the same time unit;

determining PUCCH resources used for transmitting HARQ-ACK of the at least two downlink transmissions according to PUCCH resources indicated by PRI in DCI used by the at least two downlink transmissions respectively corresponding to PDCCH;

and sending the corresponding HARQ-ACK of downlink transmission on the determined PUCCH resource.

Optionally, the determining, according to the PUCCH resource indicated by the PRI in the DCI used by the PDCCH corresponding to the at least two downlink transmissions, the PUCCH resource for transmitting the HARQ-ACK of the at least two downlink transmissions includes:

and determining PUCCH resources used for transmitting HARQ-ACK of the at least two downlink transmissions according to whether PUCCH resources indicated by PRI in DCI used by the at least two downlink transmissions respectively have overlap on a time domain.

Optionally, the determining, according to whether PUCCH resources indicated by PRIs in DCIs used by the at least two downlink transmissions respectively overlap in a time domain, PUCCH resources used for transmitting HARQ-ACKs of the at least two downlink transmissions includes:

and when the PUCCH resources indicated by the PRI in the DCI used by the at least two PDCCHs are overlapped on the time domain, determining that the HARQ-ACK of the at least two downlink transmissions are transmitted on the same PUCCH resource.

Optionally, the PUCCH resource is a PUCCH resource indicated by a PRI in DCI used by any one PDCCH in the PDCCHs respectively corresponding to the at least two downlink transmissions;

or, the PUCCH resource is a PUCCH resource indicated by a PRI in DCI used by a last PDCCH in the PDCCHs respectively corresponding to the at least two downlink transmissions.

Optionally, when the PUCCH resource is a PUCCH resource indicated by a PRI in DCI used by any one PDCCH in the PDCCHs respectively corresponding to the at least two downlink transmissions: the PUCCH resources indicated by the PRI in the DCI used by the PDCCH respectively corresponding to the at least two downlink transmissions are the same;

when the PUCCH resource is a PUCCH resource indicated by PRI in DCI used by the last PDCCH in the PDCCHs respectively corresponding to the at least two downlink transmissions: the PUCCH resources indicated by the PRI in the DCI used by the at least two downlink transmissions respectively corresponding to the PDCCH are the same, or the PUCCH resources indicated by the PRI in the DCI used by the at least two downlink transmissions respectively corresponding to the PDCCH are different and overlap in a time domain.

and when the PUCCH resources indicated by the PRI in the DCI used by the at least two PDCCHs do not overlap in the time domain, determining that the HARQ-ACKs of the at least two downlink transmissions are respectively transmitted on the PUCCH resources which do not overlap in the time domain.

and in the at least two downlink transmissions, downlink transmissions in which the PUCCH resources indicated by the PRI in the DCI used by the corresponding PDCCH are overlapped in the time domain are taken as a group, and the PUCCH resource indicated by the PRI in the DCI used by any one of the PDCCH or the last PDCCH in the group of downlink transmissions is determined to be the PUCCH resource used for transmitting the HARQ-ACK of the group of downlink transmissions.

Optionally, PRIs in the DCI used by the PDCCHs respectively corresponding to the multiple downlink transmissions belonging to the same group indicate the same or different PUCCH resources, and when different PUCCH resources are indicated, there is an overlap between one PUCCH resource and at least one other PUCCH resource in a time domain.

and in the at least two downlink transmissions, downlink transmissions in which the PUCCH resources indicated by the PRI in the DCI used by the corresponding PDCCH do not overlap in the time domain are divided into different groups, and the PUCCH resources indicated by the PRI in the DCI used by any one of the PDCCHs corresponding to each group of downlink transmissions or the last PDCCH are respectively determined to be the PUCCH resources used for transmitting the HARQ-ACK of the group of downlink transmissions.

Optionally, PRIs in DCI used by PDCCHs respectively corresponding to a plurality of downlink transmissions belonging to different groups indicate different PUCCH resources, and the different PUCCH resources do not overlap with each other in a time domain.

Optionally, the downlink transmission includes any one or more of the following:

a physical downlink shared channel, PDSCH;

and indicating the PDCCH for releasing the SPS resources in the downlink semi-persistent scheduling.

Optionally, when the downlink transmission includes a PDCCH indicating downlink SPS resource release, the PDCCH corresponding to the downlink transmission is: and the PDCCH indicates the release of the downlink SPS resources.

Optionally, the time unit is any one of the following:

one time slot;

one sub-frame;

one micro-slot.

In a second aspect, a PUCCH receiving method is further provided, which is applied to a base station, and includes:

sending at least two downlink transmissions, wherein HARQ-ACK of the at least two downlink transmissions are transmitted in the same time unit;

and receiving the corresponding HARQ-ACK of the downlink transmission on the determined PUCCH resource.

a physical downlink shared channel, PDSCH;

Optionally, the time unit is any one of the following:

one time slot;

one sub-frame;

one micro-slot.

In a third aspect, a terminal is further provided, including:

a receiving module, configured to receive at least two downlink transmissions, where HARQ-ACKs of the at least two downlink transmissions are transmitted in a same time unit;

the determining module is further configured to determine, according to PUCCH resources indicated by PRI in DCI used by the at least two downlink transmissions respectively corresponding to the PDCCH, PUCCH resources used for transmitting HARQ-ACK of the at least two downlink transmissions;

and the sending module is further configured to send the HARQ-ACK of the corresponding downlink transmission on the determined PUCCH resource.

Optionally, the determining module is specifically configured to:

a physical downlink shared channel, PDSCH;

Optionally, the time unit is any one of the following:

one time slot;

one sub-frame;

one micro-slot.

In a fourth aspect, there is also provided a base station, including:

a sending module, configured to send at least two downlink transmissions, where HARQ-ACKs of the at least two downlink transmissions are transmitted in a same time unit;

a determining module, configured to determine, according to PUCCH resources indicated by PRI in DCI used by the at least two downlink transmissions respectively corresponding to the PDCCH, PUCCH resources used for transmitting HARQ-ACK of the at least two downlink transmissions;

and the receiving module is used for receiving the HARQ-ACK of the corresponding downlink transmission on the determined PUCCH resource.

Optionally, the determining module is specifically configured to:

a physical downlink shared channel, PDSCH;

Optionally, the time unit is any one of the following:

one time slot;

one sub-frame;

one micro-slot.

In a fifth aspect, there is also provided a terminal, including: a processor, a memory and a program stored on and executable on the memory, the program, when executed by the processor, implementing the steps of the above PUCCH transmission method.

In a sixth aspect, there is also provided a base station, including: a processor, a memory and a program stored on the memory and executable on the processor, the program implementing the steps of the above PUCCH receiving method when executed by the processor.

A seventh aspect further provides a computer-readable storage medium, where a computer program is stored, and when executed by a processor, the computer program implements the steps in the PUCCH transmission method; alternatively, the computer program, when executed by a processor, implements the steps in the above-described PUCCH receiving method.

In the embodiment of the invention, at least two downlink transmissions are received, and HARQ-ACK of the at least two downlink transmissions are transmitted in the same time unit; determining PUCCH resources used for transmitting HARQ-ACK of the at least two downlink transmissions according to PUCCH resources indicated by PRI in downlink control information DCI used by the at least two downlink transmissions respectively corresponding to PDCCH; and sending the corresponding downlink transmission HARQ-ACK on the determined PUCCH resource, thereby realizing quick HARQ-ACK feedback and reducing HARQ-ACK feedback time delay.

Drawings

FIG. 1 is a block diagram of a wireless communication system according to an embodiment of the present invention;

fig. 2 is a flowchart of a PUCCH transmission method according to an embodiment of the present invention;

fig. 3 is a diagram illustrating PUCCH transmission according to an embodiment of the present invention;

fig. 4 is a second schematic diagram of PUCCH transmission according to the second embodiment of the present invention;

fig. 5 is a third diagram illustrating PUCCH transmission according to a third embodiment of the present invention;

fig. 6 is a diagram illustrating PUCCH transmission according to a fourth embodiment of the present invention;

fig. 7 is a fifth schematic diagram illustrating PUCCH transmission according to an embodiment of the present invention;

fig. 8 shows a sixth embodiment of PUCCH transmission according to the present invention;

fig. 9 is a flowchart of a PUCCH receiving method according to an embodiment of the present invention; (ii) a

Fig. 10 is one of schematic diagrams of a terminal according to an embodiment of the present invention;

FIG. 11 is a diagram illustrating a base station according to an embodiment of the present invention;

fig. 12 is a second schematic diagram of a terminal according to the embodiment of the invention;

fig. 13 is a second schematic diagram of a base station according to the embodiment of the invention;

fig. 14 is a third schematic diagram of a terminal according to an embodiment of the present invention;

fig. 15 is a fourth schematic diagram of a base station according to an embodiment of the invention.

Detailed Description

The following detailed description of embodiments of the present invention will be made with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

The terms "comprises," "comprising," or any other variation thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, the use of "and/or" in the specification and claims means that at least one of the connected objects, such as a and/or B, means that three cases, a alone, B alone, and both a and B, exist.

In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

The techniques described herein are not limited to Long Time Evolution (LTE)/LTE Evolution (LTE-Advanced) systems, and may also be used for various wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" are often used interchangeably. CDMA systems may implement Radio technologies such as CDMA2000, Universal Terrestrial Radio Access (UTRA), and so on. UTRA includes Wideband CDMA (Wideband Code Division Multiple Access, WCDMA) and other CDMA variants. TDMA systems may implement radio technologies such as Global System for Mobile communications (GSM). The OFDMA system may implement radio technologies such as Ultra Mobile Broadband (UMB), evolved-UTRA (E-UTRA), IEEE 802.11(Wi-Fi), IEEE 802.16(WiMAX), IEEE 802.20, Flash-OFDM, etc. UTRA and E-UTRA are parts of the Universal Mobile Telecommunications System (UMTS). LTE and higher LTE (e.g., LTE-A) are new UMTS releases that use E-UTRA. UTRA, E-UTRA, UMTS, LTE-A, and GSM are described in documents from an organization named "third Generation Partnership Project" (3 GPP). CDMA2000 and UMB are described in documents from an organization named "third generation partnership project 2" (3GPP 2). The techniques described herein may be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies.

As the demand for mobile communication services has changed, various organizations such as ITU (International telecommunications Union) have started to research NR (New radio communication system), for example, 5G NR (5Generation New RAT). NR defines 5 PUCCH formats, where PUCCH formats 0 and 2 only occupy 1 to 2 symbols due to time domain, and may be referred to as short PUCCH formats, and may be used for HARQ-ACK feedback for services with relatively sensitive delay, so as to reduce feedback delay. The PUCCH format 1/3/4 may occupy 4 to 14 symbols in the time domain, and may be referred to as a long PUCCH format, which may achieve the tradeoff requirement of the delay and the uplink coverage. The symbol is an OFDM (Orthogonal Frequency Division Multiplexing) symbol or an SC-FDMA (Single-carrier Frequency-Division Multiple Access) symbol or a DFT-s-OFDM (Discrete Fourier Transform-spread Orthogonal Frequency Division Multiplexing) symbol.

HARQ-ACK may be a determination of the time domain position of the transmission (including the slot and the symbol position within the slot) in terms of feedback timing (dynamic feedback timing or fixed feedback timing). The feedback timing may refer to a time interval from an end position of a downlink transmission requiring HARQ-ACK feedback to a start position of the HARQ-ACK transmission. Currently, in an NR system, this feedback timing is defined in units of slots (slots), and is expressed as a value K1, which expresses a slot interval from a slot in which downlink transmission requiring HARQ-ACK feedback is located to a slot in which HARQ-ACK transmission is located. The dynamic feedback timing is a value of indication field indication K1 in DCI (Downlink Control Information) used for scheduling a PDCCH for Downlink transmission. The fixed feedback timing is a K1 value configured by higher layer signaling. Whether the dynamic feedback timing or the fixed feedback timing is based on the end position of the downlink transmission, the time slot of the HARQ-ACK feedback is determined, and when the downlink transmission is dynamically scheduled, the time slot of the HARQ-ACK feedback is dynamically changed accordingly. In the slot for transmitting the HARQ-ACK determined according to K1, the specific symbol position of the PUCCH carrying the HARQ-ACK is determined from a plurality of PUCCH resources pre-configured by a high layer signaling according to the PRI (PUCCH Resource Indication) in the DCI.

Two kinds of HARQ-ACK codebooks are supported in the NR, namely semi-static HARQ-ACK codebook and dynamic HARQ-ACK codebook. And determining the size of the semi-static code in each time slot according to the K1 set corresponding to the time slot and the possible time domain resource allocation position of downlink transmission in each time slot. And determining possible Downlink transmission positions according to a K1 set corresponding to a time slot, determining a possible transmission opportunity set for transmitting the PDCCH according to the Downlink transmission positions and a Downlink scheduling time sequence set (K0), and determining the size and the sequence of the codebook according to a DAI (Downlink Assignment Index) field included in DCI (Downlink Assignment Index) used by the PDCCH detected in the PDCCH transmission opportunities. The DAI includes C-DAI (Counter-DAI) and T-DAI (Total-DAI), wherein the C-DAI is used for ordering HARQ-ACK of different downlink transmissions (namely, indicating the time domain and frequency domain positions of the current downlink transmission and accumulating the number of the scheduled downlink transmissions), and the T-DAI is used for indicating the size of codebook (namely, indicating the Total number of the downlink transmissions scheduled to the current time domain position).

For semi-static codebook, the base station can avoid PUCCH resource collision by changing PRI, and more flexible PUCCH resource allocation is carried out. For dynamic codebook, since the base station cannot predict the following scheduling situation in the PDCCH transmitted in the front, a final PUCCH resource cannot be indicated by the PRI in the PDCCH transmitted in the front. Therefore, for two types of codebooks, the PRI in the DCI used by the PDCCH corresponding to the multiple downlink transmissions included in the codebook may be changed one by one, so as to ensure that all HARQ-ACKs can carry transmission in one PUCCH. The current transmission mechanism can not distinguish whether the HARQ-ACK of a plurality of downlink transmissions correspond to the same PUCCH or not. Based on the above background, embodiments of the present invention will be described below with reference to the accompanying drawings.

Referring to fig. 1, fig. 1 is a schematic diagram of a wireless communication system according to an embodiment of the present invention, and as shown in fig. 1, the wireless communication system may include: a base station 10 and a terminal 11, the terminal 11 being able to communicate (transmit signaling or transmit data) with the base station 10. In practical applications, the connection between the base station 10 and the terminal 11 may be a wireless connection, and for convenience, the connection relationship between the devices is shown in fig. 1 by a solid line. It should be noted that the communication system may include a plurality of terminals 11, and the base station 10 may communicate with the plurality of terminals 11.

The base station 10 in the communication system may be a commonly used base station, an evolved node base (eNB), or a network device in a 5G system (e.g., a next generation base station (gNB) or a Transmission and Reception Point (TRP)).

The terminal 11 provided in the embodiment of the present invention may be a Mobile phone, a tablet Computer, a notebook Computer, an Ultra-Mobile Personal Computer (UMPC), a netbook, a Personal Digital Assistant (PDA), or the like.

Fig. 2 is a flowchart of a PUCCH transmission method according to an embodiment of the present invention, and referring to fig. 2, an execution subject of the PUCCH transmission method is a terminal, and the specific steps are as follows:

step 201, receiving at least two downlink transmissions, wherein HARQ-ACKs of the at least two downlink transmissions are transmitted in the same time unit.

Step 202, determining PUCCH resources for transmitting HARQ-ACK of the at least two downlink transmissions according to PUCCH resources indicated by PRI in DCI used by the at least two downlink transmissions respectively corresponding to the PDCCH.

And 203, sending the corresponding HARQ-ACK of the downlink transmission on the determined PUCCH resource.

In the embodiment of the present invention, when receiving at least two downlink transmissions, a terminal may determine whether HARQ-ACK of the at least two downlink transmissions is transmitted in the same time unit, and specifically, may determine according to HARQ-ACK feedback timing sequences of the at least two downlink transmissions, where the HARQ-ACK feedback timing sequence is indicated by a HARQ-ACK feedback timing sequence indication field in a PDCCH corresponding to the downlink transmission or configured by a higher layer signaling. The at least two downlink transmissions may be sent by the base station to the terminal, and the terminal receives the at least two downlink transmissions sent by the base station.

When the HARQ-ACK of the at least two downlink transmissions are transmitted in the same time unit, the terminal determines PUCCH resources used for transmitting the HARQ-ACK of the at least two downlink transmissions according to PUCCH resources indicated by PRI in DCI used by the PDCCH respectively corresponding to the at least two downlink transmissions, and sends the corresponding HARQ-ACK of the downlink transmission on the determined PUCCH resources. The terminal may determine PUCCH resources for transmitting HARQ-ACKs of the at least two downlink transmissions according to an overlapping condition of PUCCH resources indicated by PRIs in DCI used by the at least two downlink transmissions respectively.

In some embodiments of the present invention, at least one PUCCH resource set may be configured for the terminal in advance, for example, the terminal may be configured in advance by higher layer signaling. When multiple PUCCH resource sets are configured, different PUCCH resource sets correspond to different UCI transmission bit number ranges, for example, a first PUCCH resource set corresponds to 1 to 2-bit UCI transmission, a second PUCCH resource set corresponds to 3 to N1-bit UCI transmission, a third PUCCH resource set corresponds to N1+1 to N2-bit UCI transmission, and so on; if only one PUCCH resource set is configured, it is usually the first PUCCH resource set, i.e. the set corresponding to 1 to 2 bit UCI transmission; each PUCCH resource set comprises a plurality of PUCCH resources, and the PRI in the DCI used by the PDCCH can be used for indicating one resource; and the terminal selects one PUCCH resource set from the at least one PUCCH resource set, and then the PUCCH resource corresponding to the downlink transmission is selected in the selected PUCCH resource set according to the PRI in the DCI used by each downlink transmission corresponding PDCCH. When the high-level signaling only configures one PUCCH resource set for the terminal, the terminal directly selects the PUCCH resource set; when the high-level signaling configures at least two PUCCH resource sets for the terminal, the terminal selects one PUCCH resource set from the at least two PUCCH resource sets according to the feedback bit number of the downlink-transmitted HARQ-ACK.

Specifically, the terminal may determine that HARQ-ACKs of the at least two downlink transmissions are transmitted on the same PUCCH resource when PUCCH resources indicated by PRIs in DCI used by the at least two downlink transmissions overlap in a time domain; and when the PUCCH resources indicated by the PRI in the DCI used by the at least two PDCCHs do not overlap in the time domain, determining that the HARQ-ACKs of the at least two downlink transmissions are respectively transmitted on the PUCCH resources which do not overlap in the time domain.

The terminal may also group the at least two downlink transmissions according to whether PUCCH resources indicated by PRI in DCI used by the at least two downlink transmissions overlap in a time domain, and then determine a PUCCH resource for transmitting each group of downlink transmission HARQ-ACK. For example, the terminal may set, as a group, downlink transmissions in which PUCCH resources indicated by PRIs in DCI used by corresponding PDCCHs overlap in a time domain, among the at least two downlink transmissions; and in the at least two downlink transmissions, the downlink transmissions in which the PUCCH resources indicated by the PRI in the DCI used by the corresponding PDCCH do not overlap in the time domain are divided into different groups.

In this embodiment, when PUCCH resources indicated by PRI in DCI used by the at least two downlink transmissions correspond to each other overlap in a time domain, it is determined that HARQ-ACKs of the at least two downlink transmissions are transmitted on the same PUCCH resource. The PUCCH resource may be a PUCCH resource indicated by a PRI in DCI used by any one PDCCH in PDCCHs respectively corresponding to the at least two downlink transmissions, or a PUCCH resource indicated by a PRI in DCI used by a last PDCCH in PDCCHs respectively corresponding to the at least two downlink transmissions.

In this embodiment, when the PUCCH resource is a PUCCH resource indicated by a PRI in DCI used by any one PDCCH among the at least two PDCCHs respectively corresponding to downlink transmission, overlapping the PUCCH resources indicated by the PRI in the DCI used by the PDCCH in a time domain includes: and the PUCCH resources indicated by the PRI in the DCI used by the PDCCH respectively corresponding to the at least two downlink transmissions are the same. When the PUCCH resources are PUCCH resources indicated by PRI in DCI used by the last PDCCH in the at least two PDCCHs respectively corresponding to the downlink transmissions, PUCCH resources indicated by PRI in DCI used by PDCCH overlap in time domain, and the PUCCH resources indicated by PRI in DCI used by PDCCH are the same, or PUCCH resources indicated by PRI in DCI used by PDCCH are different and overlap in time domain.

In this embodiment, the PUCCH resources indicated by the PRI in the DCI used by all the PDCCHs corresponding to the downlink transmissions in the same group may include the same overlapping area, that is, there is overlap between the PUCCH resource indicated by the PRI in the DCI used by each PDCCH corresponding to the downlink transmission and the PUCCH resource indicated by the PRI in the DCI used by all the PDCCHs corresponding to other downlink transmissions in the group. The PUCCH resources indicated by the PRI in the DCI used by all the PDCCHs corresponding to downlink transmissions in the same group may not include the same overlapping region, but there is an overlap in association, that is, the PUCCH resource indicated by the PRI in the DCI used by each PDCCH corresponding to downlink transmission overlaps with the PUCCH resource indicated by the PRI in the DCI used by at least one PDCCH corresponding to downlink transmission in the group.

For example, assume that there are 4 downlink transmissions in chronological order, downlink transmission 1 transmitted at time slot n, downlink transmission 2 transmitted at time slot (n +1), downlink transmission 3 transmitted at time slot (n +2), and downlink transmission 4 transmitted at time slot (n + 3). If the PUCCH resource indicated by PRI in the DCI used by the PDCCH corresponding to downlink transmission 1 overlaps with the PUCCH resource indicated by PRI in the DCI used by the PDCCH corresponding to downlink transmission 2, and the PUCCH resource indicated by PRI in the DCI used by the PDCCH corresponding to downlink transmission 3 overlaps with the PUCCH resource indicated by PRI in the DCI used by the PDCCH corresponding to downlink transmission 2, HARQ-ACK feedback can be performed on the same PUCCH resource by using downlink transmission 1, downlink transmission 2, and downlink transmission 3 as a group, regardless of whether the PUCCH resource indicated by PRI in the DCI used by the PDCCH corresponding to downlink transmission 3 overlaps with the PUCCH resource indicated by PRI in the DCI used by the PDCCH corresponding to downlink transmission 1. And the PUCCH resource indicated by the PRI in the DCI used by the PDCCH corresponding to the downlink transmission 4 is not overlapped with the PUCCH resource indicated by the PRI in the DCI used by the PDCCH corresponding to the

downlink resources

1, 2 and 3, so that the

downlink transmissions

1, 2 and 3 of the downlink transmission 4 belong to different groups, and HARQ-ACK feedback is carried out on different PUCCHs.

In this embodiment, in the at least two downlink transmissions, the terminal divides downlink transmissions in which there is no overlapping in time domain of PUCCH resources indicated by PRI in DCI used by corresponding PDCCHs into different groups, and transmits the PUCCH resources of HARQ-ACK of the group of downlink transmissions on PUCCH resources indicated by PRI in DCI used by any one of PDCCH corresponding to each group of downlink transmissions or last PDCCH, respectively.

In the embodiment of the present invention, the number of downlink transmissions included in different sets of downlink transmissions may be the same or different. When the high-level signaling configures at least two PUCCH resource sets for the terminal, the terminal selects one PUCCH resource set from the at least two PUCCH resource sets according to the feedback bit number of each group of downlink-transmitted HARQ-ACK, for example, when the feedback bit number of one group of downlink-transmitted HARQ-ACK is 1-2 bits, a first group of PUCCH resource sets including PUCCH format 0 or 1 resource is selected. Specifically, the terminal may determine the feedback bit number of HARQ-ACK according to a transmission mode of downlink transmission, for example, if the downlink transmission does not use CBG (Code Block Group) -based transmission and is single codeword transmission, each downlink transmission corresponds to 1-bit HARQ-ACK feedback, and 2 downlink transmissions correspond to 2-bit HARQ-ACK feedback; if the downlink transmission uses CBG-based transmission and/or uses multi-codeword transmission, each downlink transmission corresponds to more than 1-bit HARQ-ACK feedback, and 2 downlink transmissions correspond to more than 2-bit HARQ-ACK feedback; of course, if there are more than 2 downlink transmissions in each group, there is more than 2-bit HARQ-ACK feedback regardless of whether CBG is used and regardless of whether multi-codeword transmission is used.

PDSCH；

PDCCH indicating downlink SPS resource release (which may also be referred to as SPS PDSCH release).

In this embodiment, the downlink transmission may be a PDSCH, or may be a PDCCH indicating release of downlink SPS resources. The at least two downlink transmissions may include a PDSCH and/or a PDCCH indicating release of downlink SPS resources, that is, the at least two downlink transmissions may include only a PDSCH, may also include only a PDCCH indicating release of downlink SPS resources, and may also include a PDSCH and a PDCCH indicating release of downlink SPS resources.

In this embodiment, when the downlink transmission includes a PDCCH indicating release of the downlink SPS resource, the PDCCH corresponding to the downlink transmission is the PDCCH indicating release of the downlink SPS resource.

Optionally, the time unit is any one of the following:

one time slot;

one sub-frame;

one micro-slot. Of course, the definition of time units as other lengths, e.g. N symbols etc., is not excluded.

In this embodiment, the PUCCH sending method determines whether multiple downlink HARQ-ACKs are transmitted in the same PUCCH in one slot according to whether PUCCH resources indicated by PRI in DCI used by a PDCCH corresponding to downlink transmission overlap, so as to flexibly support that HARQ-ACK feedback information of different downlink transmissions can be transmitted in one slot through multiple non-overlapping PUCCHs, thereby achieving fast HARQ-ACK feedback, reducing HARQ-ACK feedback delay, and improving system transmission efficiency.

The PUCCH sending method provided by the present invention will be described in detail with reference to specific examples, and it should be noted that the following examples all illustrate the downlink transmission as the PDSCH, but the present invention is not limited thereto, and is also applicable to a case where the downlink transmission is a PDCCH indicating release of downlink SPS resources, and a case where the downlink transmission includes the PDSCH and the PDCCH indicating release of downlink SPS resources.

It is assumed that the higher layer signaling configures at least one PUCCH resource set for the terminal in advance, each PUCCH resource set includes 8 PUCCH resources, one of the 8 PUCCH resources may be indicated using a 3-bit PRI in DCI used by the PDCCH, and a correspondence between the 3-bit PRI and the 8 PUCCH resources is shown in table 1 below.

Table 1:

correspondence table between PRI indication field and plurality of PUCCH resources in one PUCCH resource set

PRI	PUCCH resources
		'000'	First PUCCH resource in PUCCH resource set
'001'	A second PUCCH resource in the PUCCH resource set
		'010'	Third PUCCH resource in PUCCH resource set
'011'	A fourth PUCCH resource in the PUCCH resource set
		'100'	A fifth PUCCH resource in the PUCCH resource set
'101'	A sixth PUCCH resource in the PUCCH resource set
		'110'	Seventh PUCCH resource in PUCCH resource set
'111'	Eighth PUCCH resource in PUCCH resource set

Example one:

and according to K1 (feedback time sequence) corresponding to each PDSCH, determining that a plurality of PDSCHs carry out HARQ-ACK feedback in the same time slot. For example, if K1 corresponding to the PDSCH in slot n is 4, it is determined that HARQ-ACK feedback is performed in slot n + 4; if K1 corresponding to the PDSCH in the time slot n +1 is 3, determining to perform HARQ-ACK feedback in the time slot n +1+3 is n + 4; determining that the HARQ-ACK feedback is performed in the time slot n +2+2 ═ n +4 if K1 corresponding to the PDSCH in the time slot n +2 is 2; if K1 corresponding to the PDSCH in slot n +3 is 1, HARQ-ACK feedback is determined to be performed in slot n +3+1 is n + 4.

Assuming that the PRI in DCI used in a PDCCH corresponding to a PDSCH transmitted in a slot n is "000", C-DAI is 1; the PRI in DCI used in the PDCCH corresponding to the PDSCH transmitted in the slot n +1 is "010", and the C-DAI is 1; the PRI in DCI used in the PDCCH corresponding to the PDSCH transmitted in slot n +2 is "100", and C-DAI is 1; the PRI in DCI used in the PDCCH corresponding to the PDSCH transmitted in slot n +3 is "111", and C-DAI is 1; here, PUCCH resources indicated when the PRI is "000", "010", "100", and "111" do not overlap each other in the time domain.

The terminal receives the PDSCH transmission, determines that PUCCH resources indicated by PRI in DCI used by PDCCH corresponding to each PDSCH are not overlapped in time domain according to PUCCH resources indicated by PRI in DCI used by PDCCH corresponding to each PDSCH, can determine that each PDSCH carries out HARQ-ACK feedback for a group of downlink transmission, and respectively determines PUCCH resources used for transmitting HARQ-ACK for each group of PDSCH and carries out HARQ-ACK transmission on corresponding PUCCH resources. Specifically, the terminal may transmit HARQ-ACK for each PDSCH on a PUCCH resource indicated by a PRI in DCI used by the PDCCH corresponding to the PDSCH.

As shown in fig. 3,

PUCCH resources

301, 302, 303, and 304 are PUCCH resources indicated by PRI in DCI used by a PDCCH corresponding to a PDSCH transmitted in slots n, n +1, n +2, and n +3, respectively, and a terminal may transmit HARQ-ACK for the PDSCH transmitted in slot n on PUCCH resource 301, HARQ-ACK for the PDSCH transmitted in slot n +1 on PUCCH resource 302, HARQ-ACK for the PDSCH transmitted in slot n +2 on PUCCH resource 303, and HARQ-ACK for the PDSCH transmitted in slot n +3 on PUCCH resource 304. Accordingly, the base station determines a PUCCH resource for transmitting the HARQ-ACK according to the same manner as described above, and receives a corresponding HARQ-ACK on the determined PUCCH resource.

Before determining the PUCCH resource according to the PRI, the terminal needs to select one PUCCH resource set from the at least one PUCCH resource set, and then determines the PUCCH resource for transmitting the HARQ-ACK of each downlink transmission in the selected PUCCH resource set according to the PRI in the DCI used by the PDCCH corresponding to each downlink transmission.

If the terminal is only configured with one PUCCH resource set by the high-level signaling, the terminal directly selects the PUCCH resource set; when the high-level signaling configures at least two PUCCH resource sets for the terminal, the terminal selects one PUCCH resource set from the at least two PUCCH resource sets according to the feedback bit number of the downlink-transmitted HARQ-ACK. The terminal may determine the number of feedback bits for HARQ-ACK according to the transmission mode of the PDSCH, for example, if the PDSCH does not use CBG-based transmission, each PDSCH may correspond to 1 to 2-bit HARQ-ACK feedback, and the first PUCCH resource set is selected. If the PDSCH uses CBG-based transmission, the number of HARQ-ACK feedback bits corresponding to each PDSCH exceeds 2 bits, and one PUCCH resource set needs to be selected according to the number of HARQ-ACK feedback bits corresponding to each PDSCH group. Accordingly, the base station may determine one PUCCH resource set according to the same manner as described above, and determine a PUCCH resource for receiving HARQ-ACK in the selected PUCCH resource set.

If dynamic codebook is used, each PDSCH also corresponds to a DAI value, and when the single carrier is used, only C-DAI is used, because the feedback is one-to-one (namely, one PDSCH performs HARQ-ACK feedback independently), the C-DAI value is always 1; if semi-static codebook is used, the DAI value exists only when the PDSCH is scheduled by fallback DCI, and otherwise does not exist.

In this example one, the PRI in the DCI used by the PDCCH corresponding to the PDSCH may be set by the base station according to an expected transmission scheme, and the base station may set the DAI value according to the expected transmission scheme. For example, when the base station wants to divide each PDSCH into one group and put its HARQ-ACK feedback on a separate PUCCH for transmission, the PRI in the DCI used by the PDCCH corresponding to the PDSCH may be set as shown in fig. 3. Before setting the PRI, the base station further needs to select one PUCCH resource set from at least one PUCCH resource set configured for the terminal, and then perform PRI indication in the selected PUCCH resource set. The base station may select one PUCCH resource set in the same manner as the terminal selects the PUCCH resource set, which is not described again. That is, the resource indicated by the PRI is a resource in the selected PUCCH resource set, so that when the terminal and the base station select the PUCCH resource set according to the same rule, it is ensured that the PUCCH resource set is understood consistently, thereby ensuring that the resource indicated by the PRI is understood consistently.

Example two:

Assume that PRI in DCI used by PDCCH corresponding to PDSCH transmitted in slot n is "000"; a PRI of DCI used in a PDCCH corresponding to a PDSCH transmitted in slot n +1 is "000" or "001" (a PUCCH resource indicated by a PRI of "001" overlaps with a PUCCH resource indicated by a PRI of "000"); the PRI in the DCI used by the PDCCH corresponding to the PDSCH transmitted in slot n +2 is "011"; a PRI of DCI used in a PDCCH corresponding to a PDSCH transmitted in slot n +3 is "011" or "111" (a PUCCH resource indicated by a PRI of "111" overlaps with a PUCCH resource indicated by a PRI of "011"); the PUCCH resource indicated by the PRI of "000" or "001" is not overlapped with the PUCCH resource indicated by the PRI of "011" or "111" in the time domain.

The terminal receives the PDSCH transmission, and divides PDSCHs which are overlapped in a time domain between PUCCH resources indicated by PRI in DCI used by corresponding PDCCH into one group according to PUCCH resources indicated by PRI in DCI used by corresponding PDCCH, divides PDSCH which is not overlapped in a time domain between PUCCH resources indicated by PRI in DCI used by corresponding PDCCH into different groups, namely divides PDSCH transmitted in a time slot n and PDSCH transmitted in a time slot n +1 into one group, and divides PDSCH transmitted in a time slot n +2 and PDSCH transmitted in a time slot n +3 into one group. And then HARQ-ACK feedback is carried out respectively for each group.

As shown in fig. 4, the PRI in the DCI used by the PDCCH corresponding to the PDSCH transmitted in the slot n +1 shown in fig. 4 is "001", and the PRI in the DCI used by the PDCCH corresponding to the PDSCH transmitted in the slot n +3 is "111". The

PUCCH resources

401, 402, 403, and 404 are PUCCH resources indicated by PRI in DCI used by a PDCCH corresponding to a PDSCH transmitted in slots n, n +1, n +2, and n +3, respectively, and the terminal may transmit HARQ-ACK for the PDSCH transmitted in slot n and HARQ-ACK for the PDSCH transmitted in slot n +1 on the PUCCH resource 402 and transmit HARQ-ACK for the PDSCH transmitted in slot n +2 and HARQ-ACK for the PDSCH transmitted in slot n +3 on the PUCCH resource 404. Accordingly, the base station determines a PUCCH resource for transmitting the HARQ-ACK according to the same manner as described above, and receives a corresponding HARQ-ACK on the determined PUCCH resource.

Before determining the PUCCH resource according to the PRI, the terminal needs to select one PUCCH resource set from the at least one PUCCH resource set, and then determines the PUCCH resource for transmitting the HARQ-ACK of each downlink transmission in the selected PUCCH resource set according to the PRI in the DCI used by the PDCCH corresponding to each downlink transmission. And if the PDSCHs do not use CBG-based transmission and are single code words, each PDSCH corresponds to 1-bit HARQ-ACK feedback, each PDSCH group corresponds to 2-bit HARQ-ACK feedback, and a first PUCCH resource set is selected. If the PDSCH does not use CBG-based transmission and is a multi-code word or uses CBG-based transmission, each PDSCH is possibly more than 1-bit HARQ-ACK feedback, each PDSCH group is possibly more than 2-bit HARQ-ACK feedback, and one PUCCH resource set needs to be selected according to the number of feedback bits of the HARQ-ACK corresponding to each PDSCH group.

Assuming that when dynamic HARQ-ACK codebook transmission is used, each PDSCH is ordered according to a corresponding DAI value (an actual PDSCH transmission order needs to be determined according to a transmission time domain position of a PDCCH for scheduling the PDSCH and a scheduling sequence, which may not be the order in fig. 4, but HARQ-ACK feedback is ordered according to DAI, for convenience, in this embodiment, the PDSCH is ordered according to DAI order), C-DAI corresponding to the PDSCH in each group is sequentially increased, because of a single carrier, the last C-DAI is equal to T-DAI, that is, the number of total scheduled PDSCHs in the group is expressed, HARQ-ACK ordering in a group and the number of bits of HARQ-ACK corresponding to a group of PDSCHs can be performed according to C-DAI, so that HARQ-ACK corresponding to a group of PDSCHs is transmitted on a corresponding PUCCH resource according to the generated HARQ-ACK; if semi-static codebook transmission is used, the DAI value exists only when the PDSCH is scheduled by fallback DCI, and otherwise does not exist.

In this second example, the PRI in the DCI used by the PDCCH corresponding to the PDSCH may be set by the base station according to an expected transmission scheme, and the base station may set the DAI value according to the expected transmission scheme. For example, when the PDSCH that the base station intends to transmit in slot n and the PDSCH that is transmitted in slot n +1 are divided into one group, the PDSCH that is transmitted in slot n +2 and the PDSCH that is transmitted in slot n +3 are divided into one group, PRI in DCI used by the PDCCH corresponding to the PDSCH that is transmitted in slot n and PRI in DCI used by the PDCCH corresponding to the PDSCH that is transmitted in slot n +1 may be set to indicate that there is overlapping PUCCH resources, for example, PRI in DCI used by the PDCCH corresponding to the PDSCH that is transmitted in slot n may be set to "000", PRI in DCI used by the PDCCH corresponding to the PDSCH that is transmitted in slot n +1 may be set to "000" or "001" (there is overlapping PUCCH resources indicated by PRI being "001" and PUCCH resources indicated by PRI being "000"); the PRI in the DCI used by the PDCCH corresponding to the PDSCH transmitted in slot n +2 may be determined, and PRI in DCI used by PDCCH corresponding to PDSCH transmitted in slot n +3 is set to indicate that there is overlapping PUCCH resource, and the PRI in the DCI used by the PDCCH corresponding to the PDSCH transmitted in time slots n and n +1 respectively is guaranteed, and PRI in DCI used by PDCCH respectively corresponding to PDSCH transmitted in slots n +2 and n +3 is set to indicate that there is no overlapped PUCCH resource, for example, the PRI in the DCI used by the PDCCH corresponding to the PDSCH transmitted in slot n +2 is set to "011", and the PRI in the DCI used by the PDCCH corresponding to the PDSCH transmitted in slot n +3 is set to "011" or "111" (there is an overlap between the PUCCH resource indicated by the PRI of "111" and "011" and there is no overlap between the PUCCH resource indicated by the PRI of "000" and "001"). It can be understood that, since there is an overlap between the PUCCH resource indicated by the PRI of "001" and the PUCCH resource indicated by the PRI of "000", the base station may flexibly change the PUCCH resources corresponding to a group of PDSCHs when setting the PRI. For example, the base station determines that the resource corresponding to "000" is already occupied by other terminals in slot n +1, the first set of PDSCH may be changed to perform HARQ-ACK feedback on the PUCCH resource corresponding to "001". Before setting the PRI, the base station needs to select one PUCCH resource set from at least one PUCCH resource set configured for the terminal, and then perform a PRI indication in the selected PUCCH resource set. The base station may select one PUCCH resource set in the same manner as the terminal selects the PUCCH resource set, which is not described again. That is, the resource indicated by the PRI is a resource in the selected PUCCH resource set, so that when the terminal and the base station select the PUCCH resource set according to the same rule, it is ensured that the PUCCH resource set is understood consistently, thereby ensuring that the resource indicated by the PRI is understood consistently.

Example three:

Assume that PRI in DCI used by PDCCH corresponding to PDSCH transmitted in slot n is "000"; a PRI of "001" in DCI used in a PDCCH corresponding to a PDSCH transmitted in slot n +1 (a PUCCH resource indicated by a PRI of "001" overlaps with a PUCCH resource indicated by a PRI of "000"); a PRI of DCI used in a PDCCH corresponding to a PDSCH transmitted in slot n +2 is "010" (a PUCCH resource indicated by a PRI of "010" overlaps with a PUCCH resource indicated by a PRI of "001"); the PRI in the DCI used by the PDCCH corresponding to the PDSCH transmitted in slot n +3 is "111" (there is no overlap between the PUCCH resource indicated by the PRI of "111" and the PUCCH resource indicated by the PRI of "000", "001", and "010").

The terminal receives the PDSCH transmission, and divides PDSCHs which are overlapped in time domain among PUCCH resources indicated by PRI in DCI used by PDCCH corresponding to each PDSCH into one group according to PUCCH resources indicated by PRI in DCI used by corresponding PDCCH, divides PDSCHs which are not overlapped in time domain among PUCCH resources indicated by PRI in DCI used by corresponding PDCCH into different groups, namely divides PDSCHs transmitted in time slots n, n +1 and n +2 into one group, and divides PDSCHs transmitted in time slot n +3 into one group. And then HARQ-ACK feedback is carried out respectively for each group.

As shown in fig. 5,

PUCCH resources

501, 502, 503, and 504 are PUCCH resources indicated by PRI in DCI used in PDCCH corresponding to PDSCH transmitted in slots n, n +1, n +2, and n +3, respectively, PUCCH resource 501 overlaps PUCCH resource 502, PUCCH resource 502 overlaps PUCCH resource 503, PUCCH resource 503 does not overlap PUCCH resource 501, and the terminal divides PDSCH transmitted in slots n, n +1, and n +2 into the same group and transmits HARQ-ACK feedback of these three PDSCHs on PUCCH resource 503. The PUCCH resource 504 and the

PUCCH resources

501, 502 and 503 are not overlapped, the terminal divides the PDSCH transmitted on the time slot n +3 and the PDSCH transmitted on the time slots n, n +1 and n +2 into different groups, and the HARQ-ACK feedback of the PDSCH in the time slot n +3 is transmitted on the PUCCH resource 504.

Before determining the PUCCH resource according to the PRI, the terminal needs to select one PUCCH resource set from the at least one PUCCH resource set, and then determines the PUCCH resource for transmitting the HARQ-ACK of each downlink transmission in the selected PUCCH resource set according to the PRI in the DCI used by the PDCCH corresponding to each downlink transmission. If the PDSCH does not use CBG based transmission and is a single codeword, each PDSCH corresponds to 1-bit HARQ-ACK feedback, the first set of PDSCH corresponds to 3-bit HARQ-ACK feedback, the second set of PUCCH resources is selected (assuming the second set of PUCCH resources is used to carry 3 to N1 bits of information), the second set of PDSCH corresponds to 1-bit HARQ _ ACK feedback, the first set of PUCCH resources is selected. If the PDSCH does not use CBG-based transmission and is a multi-code word or uses CBG-based transmission, each PDSCH is possibly more than 1-bit HARQ-ACK feedback, each PDSCH group is possibly more than 2-bit HARQ-ACK feedback, and one PUCCH resource set needs to be selected according to the number of feedback bits of the HARQ-ACK corresponding to each PDSCH group.

Assuming that when dynamic HARQ-ACK codebook transmission is used, each PDSCH is ordered according to a corresponding DAI value (an actual PDSCH transmission order needs to be determined according to a transmission time domain position of a PDCCH for scheduling the PDSCH and a scheduling sequence, which may not be the order in fig. 4, but HARQ-ACK feedback is ordered according to DAI, for convenience, in this embodiment, the PDSCH is ordered according to DAI order), C-DAI corresponding to the PDSCH in each group is sequentially increased, because of a single carrier, the last C-DAI in each group is equal to T-DAI, that is, the total number of scheduled PDSCHs in the group is expressed, HARQ-ACK ordering in a group and determining the number of bits of HARQ-ACK corresponding to a group of PDSCHs can be performed according to C-DAI, so that HARQ-ACK corresponding to the generated is transmitted on a corresponding PUCCH resource; if semi-static codebook transmission is used, the DAI value exists only when the PDSCH is scheduled by fallback DCI, and otherwise does not exist.

In this third example, the PRI in the DCI used by the PDCCH corresponding to the PDSCH may be set by the base station according to an expected transmission scheme, and the base station may set a DAI value according to the expected transmission scheme. For example, when the PDSCH that the base station intends to transmit in slots n, n +1, and n +2 is divided into one group and the PDSCH transmitted in slot n +3 is divided into one group, PRI in DCI used by the PDCCH corresponding to the PDSCH transmitted in slots n, n +1, and n +2 may be set to indicate that there is an overlap, for example, PRI in DCI used by the PDCCH corresponding to the PDSCH transmitted in slot n may be set to "000", PRI in DCI used by the PDCCH corresponding to the PDSCH transmitted in slot n +1 may be set to "001" (there is an overlap between a PUCCH resource indicated by PRI of "001" and a PUCCH resource indicated by PRI of "000"), PRI in DCI used by the PDCCH corresponding to the PDSCH transmitted in slot n +2 may be set to "010" (there is an overlap between a PUCCH resource indicated by PRI of "010" and a PUCCH resource indicated by PRI of "001"); the PRI in the DCI used by the PDCCH corresponding to the PDSCH transmitted in the slot n +3 may be set to a PUCCH resource that does not overlap with the PUCCH resource indicated by the PRI in the DCI used by the PDCCHs respectively corresponding to the PDSCHs transmitted in the slots n, n +1, and n +2, for example, the PRI in the DCI used by the PDCCH corresponding to the PDSCH transmitted in the slot n +3 may be set to "111" (the PUCCH resource indicated by the PRI being "111" does not overlap with the PUCCH resources indicated by the PRI being "000", "001", and "010"). It can be understood that, since there is an overlap between the PUCCH resource indicated by the PRI of "001" and the PUCCH resource indicated by the PRI of "000", and the PUCCH resource indicated by the PRI of "010" and the PUCCH resource indicated by the PRI of "001", the base station may flexibly change the PUCCH resources corresponding to a group of PDSCHs when setting the PRI. For example, if the base station determines that the resource corresponding to "000" is already occupied by other terminals in the slot n +1, the HARQ-ACK feedback performed on the PUCCH resource corresponding to "001" by the first group PDSCH may be changed, and if it is determined that the resource corresponding to "001" is not enough for transmitting 3-bit HARQ-ACK in the slot n +2, the HARQ-ACK feedback performed on the PUCCH resource corresponding to "010" by the first group PDSCH may be changed. Before setting the PRI, the base station needs to select one PUCCH resource set from at least one PUCCH resource set configured for the terminal, and then perform a PRI indication in the selected PUCCH resource set. The base station may select one PUCCH resource set in the same manner as the terminal selects the PUCCH resource set, which is not described again. That is, the resource indicated by the PRI is a resource in the selected PUCCH resource set, so that when the terminal and the base station select the PUCCH resource set according to the same rule, it is ensured that the PUCCH resource set is understood consistently, thereby ensuring that the resource indicated by the PRI is understood consistently.

Example four:

assume that multiple PDSCHs are determined to perform HARQ-ACK feedback in the same time slot according to K1 corresponding to each PDSCH. For example, when K1 corresponding to the PDSCH in slot n is 8, it is determined that HARQ-ACK feedback is performed in slot n +8, when K1 corresponding to the PDSCH in slot n +1 is 7, it is determined that HARQ-ACK feedback is performed in slot n +1+7 is n +8, and when K1 corresponding to the PDSCH in slot n +2 is 6, it is determined that HARQ-ACK feedback is performed in slot n +2+6 is n +8, and so on.

Suppose that the base station wants to group 4 PDSCHs transmitted in slots n to (n +3), group 4 PDSCHs transmitted in slots (n +4) to (n +7), and transmit HARQ-ACKs of the two sets of PDSCHs on two PUCCHs, respectively, which are in the same slot but do not overlap each other in the time domain. The base station can realize the transmission mode by reasonably setting the DAI and the PRI; for each group of PDSCH, the base station selects one PUCCH resource set according to the total number of HARQ-ACK bits corresponding to the group of PDSCH, and then sets PRI to indicate one PUCCH resource to the terminal from 8 PUCCH resources in the selected PUCCH set according to the following mode.

In one implementation, the base station may set the PRI in the DCI used by the PDCCH corresponding to the 4 PDSCHs transmitted in the time slots n to (n +3) to the same value, for example, all set to "000" or all set to "001", and set the PRI in the DCI used by the PDCCH corresponding to the 4 PDSCHs transmitted in the time slots (n +4) to (n +7) to the same value, but different from the PRI in the DCI used by the PDCCH corresponding to the 4 PDSCHs transmitted in the time slots n to (n +3), for example, all set to "011" or "111", and so on. In this case, it is assumed that the PUCCH resources corresponding to the PRI of "000" or "001" do not overlap with the PUCCH resources corresponding to the PRI of "011" or "111" in the time domain, as shown in fig. 6. Since the PRIs in the DCI used by the PDCCHs corresponding to the 4 PDSCHs transmitted in the time slots n to (n +3) indicate the same PUCCH resource, it is obvious that the PUCCH resources corresponding to the 4 PDSCHs overlap each other and belong to the same group; similarly, since the PRIs in the DCI used by the PDCCHs corresponding to the 4 PDSCHs transmitted in the slots (n +4) to (n +7) indicate the same PUCCH resource, it is obvious that the PUCCH resources corresponding to the 4 PDSCHs overlap each other and belong to the same group, and the PUCCH resource corresponding to the PRI in the DCI used by the PDCCH corresponding to the 4 PDSCHs transmitted in the slots n to (n +3) and the PUCCH resource corresponding to the PRI in the DCI used by the PDCCH corresponding to the 4 PDSCHs transmitted in the slots (n +4) to (n +7) do not overlap each other in the time domain, which indicates that HARQ-ACK transmission can be performed on different PUCCHs, respectively, as shown in fig. 6. The terminal may determine a packet according to the PUCCH resource indicated by the PRI, and then transmit HARQ-ACKs for 4 PDSCHs transmitted in slots n to (n +3) on PUCCH resource 601 indicated by PRI of "000", and transmit HARQ-ACKs for 4 PDSCHs transmitted in slots (n +4) to (n +7) on PUCCH resource 602 indicated by PRI of "011".

In another implementation manner, the PRI values in the DCI used by the PDCCHs corresponding to the PDSCHs in the same group may also be different, as long as different PUCCH resources indicated by the PRI in the DCI used by the PDCCHs corresponding to the PDSCHs in the same group overlap in the time domain, and PUCCH resources indicated by the PRI in the DCI used by the PDCCHs corresponding to the PDSCHs in different groups do not overlap in the time domain. For example, as shown in fig. 7, assuming that PUCCH resources corresponding to PRI of "000" and "001" overlap in the time domain, both states may be used for PRI indication in the same set of PDSCH for changing PUCCH resources corresponding to the set of PDSCH; assuming that PUCCH resources corresponding to PRIs of "011" and "111" overlap in the time domain, both states may be used for PRI indication in the same group of PDSCHs, so as to change the PUCCH resources corresponding to the group of PDSCHs; it is assumed that PUCCH resources corresponding to a PRI of "000" or "001" do not overlap with PUCCH resources corresponding to a PRI of "011" or "111" in the time domain. The base station may set a PRI in DCI used by a PDCCH corresponding to a PDSCH transmitted in slots (n +4) to (n +7) as a PUCCH resource indicating that a PUCCH resource indicated by a PRI in DCI used by a PDCCH corresponding to a PDSCH transmitted in slots n to (n +3) does not overlap in a time domain. This is achieved by grouping 4 PDSCHs transmitted in time slots n to (n +3) and 4 PDSCHs transmitted in time slots (n +4) to (n + 7). The PRIs in the DCI used by the PDCCHs corresponding to the PDSCHs in the same group may be set to the same value or different values as long as the PUCCH resources indicated by the PRIs in the DCI used by the PDCCHs corresponding to the PDSCHs in the same group overlap. For example, the base station may set the PRI in the DCI used by the PDCCHs corresponding to the 4 PDSCHs transmitted in the slots n to (n +3) to different values, but since the PUCCH resources corresponding to "000" and "001" overlap in the time domain, it may be determined that the 4 PDSCHs transmitted in the slots n to (n +3) are in the same group, and the PUCCH resource transmitting the group of PDSCHs is the PUCCH resource indicated by the PRI in the DCI used by the last PDCCH in the PDCCH corresponding to the group of PDSCHs, that is, the PUCCH resource indicated by the PRI of "001". Similarly, the base station may set the PRI in the DCI used by the PDCCH corresponding to the 4 PDSCHs transmitted in the slots (n +4) to (n +7) to be different values, but since the PUCCH resources corresponding to "011" and "111" overlap in the time domain, it may be determined that the 4 PDSCHs transmitted in the slots (n +4) to (n +7) belong to the same group although the PRI is different, and perform HARQ-ACK feedback on the same PUCCH, where the PUCCH resource for transmitting the HARQ-ACK of the PDSCH of the group is the PUCCH resource indicated by the PRI in the DCI used by the last PDCCH in the PDCCH corresponding to the PDSCH of the group, that is, the PUCCH resource indicated by the PRI corresponding to the 8 th PDSCH, that is, the PUCCH resource corresponding to the PRI of "111". Since the PUCCH resource indicated by PRI in the DCI used by the PDCCH corresponding to the 4 PDSCHs transmitted in the slots n to (n +3) is different from the PUCCH resource indicated by PRI in the DCI used by the PDCCH corresponding to the 4 PDSCHs transmitted in the slots (n +4) to (n +7), the 8 PDSCHs can be naturally divided into two groups according to the PRI, and HARQ-ACK feedback can be performed on different PUCCHs. As shown in fig. 7, PUCCH resource 701 is a PUCCH resource indicated by a PRI of "000", PUCCH resource 702 is a PUCCH resource indicated by a PRI of "001", PUCCH resource 703 is a PUCCH resource indicated by a PRI of "011", and PUCCH resource 704 is a PUCCH resource indicated by a PRI of "111". The terminal may determine a packet according to the PUCCH resource indicated by the PRI, and then transmit HARQ-ACKs for 4 PDSCHs transmitted in slots n to (n +3) on PUCCH resource 702 indicated by PRI of "001" and transmit HARQ-ACKs for 4 PDSCHs transmitted in slots (n +4) to (n +7) on PUCCH resource 704 indicated by PRI of "111".

When dynamic HARQ-ACK codebook transmission is used, each PDSCH is ordered according to a corresponding DAI value (an actual PDSCH transmission sequence needs to be determined according to a transmission time domain position of a PDCCH for scheduling the PDSCH and a scheduling sequence, which may not be the sequence in the figure, but HARQ-ACK feedback is ordered according to DAI, for convenience, in this embodiment, the PDSCH is ordered in the order of DAI), C-DAI in each group of PDSCHs is sequentially increased, because of being a single carrier, the last C-DAI in each group is equal to T-DAI, that is, the total number of scheduled PDSCHs in the group is expressed, HARQ-ACK ordering in a group and the number of bits of HARQ-ACK corresponding to a group of PDSCHs can be performed according to C-DAI, so that HARQ-ACK corresponding to a generated is transmitted on a corresponding PUCCH resource. If semi-static codebook transmission is used, the DAI value exists only when the PDSCH is scheduled by fallback DCI, and otherwise does not exist.

Example five:

if multiple carriers are configured, different from the single carrier in the above example, if a dynamic codebook is used in multiple carriers, each PDSCH corresponds to a T-DAI in addition to a C-DAI, and the 2-bit T-DAI is tabulated in a modulo-4 manner until the current transmission time, totaling the total number of scheduled downlink transmissions. Thus, there is a many-to-one mapping, that is, 2 bits T-DAI ═ 2 can express 2 or 6 or 10 … PDSCHs, the terminal can infer 2 or 6 or 10 … at this time according to the number of PDSCHs that have been received, and then can determine the number of HARQ-ACK bits corresponding to a group of PDSCHs according to the value of T-DAI, and C-DAI is accumulated in a group in the order of first frequency domain and then time domain. PDSCH with overlapping PUCCH resources indicated by PRI in DCI used by corresponding PDCCH on different carriers may be divided into the same group, for example, as shown in fig. 8, PRI in DCI used by PDSCH transmitted on time slot n and n +1 of carrier 1 and PDCCH corresponding to PDSCH transmitted on time slot n and n +1 of carrier 2 are both "000", and PUCCH resource indicated by PRI is PUCCH resource 801; the PRIs in the DCI used by the PDCCH corresponding to the PDSCH transmitted on the time slots n +2 and n +3 of the carrier 1 and the PDSCH transmitted on the time slots n +2 and n +3 of the carrier 2 are both "001", and the PUCCH resource indicated by the PRIs is PUCCH resource 802; the PRIs in the DCI used by the PDCCH corresponding to the PDSCH transmitted on the time slots n +4 to n +6 of the carrier 1 and the PDSCH transmitted on the time slots n +4 to n +6 of the carrier 2 are both "011", and the PUCCH resource indicated by the PRIs is the PUCCH resource 803; the PRIs in the DCI used by the PDCCH corresponding to the PDSCH transmitted on slot n +7 of carrier 1 and the PDSCH transmitted on slot n +7 of carrier 2 are both "111", and the PUCCH resource indicated by the PRIs is PUCCH resource 804. Here, PUCCH resource 801 overlaps PUCCH resource 802, PUCCH resource 803 overlaps PUCCH resource 804, and there is no overlap between PUCCH resource 801 or PUCCH resource 802, and PUCCH resource 803 or PUCCH resource 804. Therefore, as shown in fig. 8, the PDSCH transmitted on the carrier in the time slots n and n +3 of the carrier 1 and the PDSCH transmitted on the time slots n and n +3 of the carrier 2 may be divided into the same group, and the HARQ-ACK for the group of PDSCH may be transmitted on the PUCCH resource indicated by PRI of "001"; the PDSCH transmitted by the carrier in the time slots n +4 and n +7 of the carrier 1 and the PDSCH transmitted in the time slots n +4 and n +7 of the carrier 2 are divided into a same group, and the HARQ-ACK of the PDSCH in the group is transmitted on the PUCCH resource indicated by PRI of 111.

It should be noted that, in the above example, only one PUCCH resource set includes 8 PUCCH resources, and in practical application, the number of PUCCH resources included in one PUCCH resource set may be less than 8, or may be greater than 8. When one PUCCH resource set includes less than 8 PUCCH resources, the bit number of the PRI may also be adjusted accordingly, for example, when 4 PUCCH resources are included, the bit number of the PRI is 2 bits. When one PUCCH resource set includes more than 8 PUCCH resources, the PUCCH resource needs to be indicated by a Control Channel Elements index (Control Channel Elements index) of the PRI combined PDCCH.

It can be understood that, in some embodiments of the present invention, when a PUCCH group is configured (i.e., when supporting PUCCH transmission on a SCC (Secondary Component Carrier), a plurality of carriers of a terminal are divided into at least two Carrier groups, where one Carrier in each Carrier group may transmit PUCCH, and downlink transmission in different Carrier groups performs independent UCI (Uplink Control Information) transmission on the Carrier in the Carrier group that transmits PUCCH), the embodiments of the present invention are used independently in each PUCCH group.

Referring to fig. 9, fig. 9 is a flowchart of a PUCCH receiving method according to an embodiment of the present invention, where as shown in fig. 9, an execution main body of the PUCCH receiving method is a base station, and the method specifically includes the following steps:

step 901, at least two downlink transmissions are sent, and HARQ-ACKs of the at least two downlink transmissions are transmitted in the same time unit.

Step 902, determining PUCCH resources for transmitting HARQ-ACK of the at least two downlink transmissions according to PUCCH resources indicated by PRI in DCI used by the at least two downlink transmissions respectively.

And 903, receiving the corresponding downlink transmission HARQ-ACK on the determined PUCCH resource.

a physical downlink shared channel, PDSCH;

Optionally, the time unit is any one of the following:

one time slot;

one sub-frame;

one micro-slot.

It should be noted that this embodiment may be a base station side embodiment corresponding to the embodiment shown in fig. 2, the principle of PUCCH reception is similar to the principle of PUCCH transmission, and for a specific process, reference is made to the description of the embodiment shown in fig. 2, which is not described herein again.

The embodiment of the invention also provides a terminal, and as the principle of solving the problem of the terminal is similar to the PUCCH transmission method in the embodiment of the invention, the implementation of the terminal can refer to the implementation of the PUCCH transmission method, and repeated parts are not laid.

Referring to fig. 10, an embodiment of the present invention further provides a terminal 1000, where the terminal 1000 includes a processor 1001 and a transceiver 1002, where,

the transceiver 1002 may be a plurality of elements including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium, the transceiver 1002 being configured to receive and transmit data under control of the processor 1001;

the processor 1001 or the transceiver 1002 is configured to receive at least two downlink transmissions, where hybrid automatic repeat request acknowledgements, HARQ-ACKs, of the at least two downlink transmissions are transmitted in a same time unit;

the processor 1001 is further configured to determine, according to PUCCH resources indicated by a PUCCH resource indication field PRI in downlink control information DCI used by the at least two downlink transmission PDCCH corresponding to the at least two downlink transmissions, PUCCH resources used for transmitting HARQ-ACK of the at least two downlink transmissions;

the processor 1001 or the transceiver 1002 is further configured to send HARQ-ACK of corresponding downlink transmission on the determined PUCCH resource.

Optionally, the processor 1001 is specifically configured to:

a physical downlink shared channel, PDSCH;

Optionally, the time unit is any one of the following:

one time slot;

one sub-frame;

one micro-slot.

It should be noted that the terminal provided in the embodiment of the present invention can implement each process in the method embodiments of fig. 2 to fig. 8, and the implementation principle and technical effect are similar, and details are not described here again in this embodiment.

The embodiment of the invention also provides a base station, and as the principle of solving the problems of the base station is similar to the transmission and reception of the PUCCH in the embodiment of the invention, the implementation of the base station can refer to the implementation of the PUCCH receiving method, and the repeated parts are not repeated.

Referring to fig. 11, an embodiment of the present invention further provides a base station 1100, where the base station 1100 includes a processor 1101 and a transceiver 1102, where,

the transceiver 1102, which may be a plurality of elements including a transmitter and a receiver, provides a means for communicating with various other apparatus over a transmission medium, and the transceiver 1102 is configured to receive and transmit data under the control of the processor 1101;

the processor 1101 or the transceiver 1102 is configured to send at least two downlink transmissions, where HARQ-ACKs of the at least two downlink transmissions are transmitted in a same time unit;

the processor 1101 is further configured to determine, according to PUCCH resources indicated by PRI in DCI used by the at least two downlink transmissions respectively corresponding to the at least two downlink transmissions, PUCCH resources used for transmitting HARQ-ACK of the at least two downlink transmissions;

the processor 1101 or the transceiver 1102 is further configured to receive HARQ-ACK of corresponding downlink transmission on the determined PUCCH resource.

Optionally, the processor 1101 is specifically configured to:

a physical downlink shared channel, PDSCH;

Optionally, the time unit is any one of the following:

one time slot;

one sub-frame;

one micro-slot.

It should be noted that the base station provided in the embodiment of the present invention can implement each process in the method embodiments of fig. 2 to fig. 8, and the implementation principle and technical effect are similar, and details are not described here again in this embodiment.

As shown in fig. 12, the terminal 1200 shown in fig. 12 includes: at least one processor 1201, memory 1202, at least one network interface 1204, and a user interface 1203. The various components in terminal 1200 are coupled together by a bus system 1205. It is understood that bus system 1205 is used to enable connected communication between these components. Bus system 1205 includes, in addition to a data bus, a power bus, a control bus, and a status signal bus. But for clarity of illustration the various buses are labeled as bus system 1205 in figure 12.

The user interface 1203 may include, among other things, a display, a keyboard, or a pointing device (e.g., a mouse, trackball, touch pad, or touch screen, among others.

It is to be understood that the memory 1202 in embodiments of the present invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration, and not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data rate Synchronous Dynamic random access memory (ddr DRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 1202 of the subject systems and methods is intended to comprise, without being limited to, these and any other suitable types of memory.

In some embodiments, memory 1202 holds the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof: an operating system 12021 and application programs 12022.

The operating system 12021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is used for implementing various basic services and processing hardware-based tasks. The application 12022 contains various applications such as a Media Player (Media Player), a Browser (Browser), and the like, and is used to implement various application services. A program implementing a method according to an embodiment of the present invention may be included in the application 12022.

In an embodiment of the present invention, each step in the PUCCH transmission method is implemented by calling a program or an instruction stored in the memory 1202, specifically, a program or an instruction stored in the application program 12022, and when executed.

The terminal provided in the embodiment of the present invention may execute the above PUCCH sending method embodiment, and the implementation principle and technical effect are similar, which are not described herein again.

As shown in fig. 13, the base station 1300 shown in fig. 13 includes: at least one processor 1301, memory 1302, at least one network interface 1304, and a user interface 1303. The various components in the base station 1300 are coupled together by a bus system 1305. It is understood that the bus system 1305 is used to implement connective communication between these components. The bus system 1305 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled in FIG. 13 as the bus system 1305.

The user interface 1303 may include, among other things, a display, a keyboard or a pointing device (e.g., a mouse, trackball, touch pad, or touch screen).

It is to be understood that the memory 1302 in embodiments of the present invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration, and not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data rate Synchronous Dynamic random access memory (ddr DRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 1302 of the systems and methods described in connection with embodiments of the invention is intended to comprise, without being limited to, these and any other suitable types of memory.

In some embodiments, memory 1302 holds the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof: an operating system 13021 and application programs 13022.

The operating system 13021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is used for implementing various basic services and processing hardware-based tasks. The application programs 13022 include various application programs such as a Media Player (Media Player), a Browser (Browser), etc. for implementing various application services. A program for implementing the method of an embodiment of the present invention may be included in the application 13022.

In an embodiment of the present invention, each step in the PUCCH receiving method is implemented by calling a program or an instruction stored in the memory 1302, specifically, a program or an instruction stored in the application 13022, and when executed.

The base station provided in the embodiment of the present invention may execute the above PUCCH receiving method embodiment, and the implementation principle and technical effect are similar, which are not described herein again.

Embodiments of the present invention further provide a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, may implement steps in a PUCCH transmission method and a PUCCH reception method provided in embodiments of the present invention.

Referring to fig. 14, the present invention further provides a terminal 1400, as shown in fig. 14, where the terminal 1400 includes:

a receiving module 1401, configured to receive at least two downlink transmissions, where HARQ-ACKs of the at least two downlink transmissions are transmitted in a same time unit;

a determining module 1402, further configured to determine, according to PUCCH resources indicated by PRI in DCI used by the at least two downlink transmissions respectively corresponding to the PDCCH, PUCCH resources used for transmitting HARQ-ACK of the at least two downlink transmissions;

a sending module 1403, configured to send HARQ-ACK of corresponding downlink transmission on the determined PUCCH resource.

Optionally, the determining module 1402 is specifically configured to:

a physical downlink shared channel, PDSCH;

Optionally, the time unit is any one of the following:

one time slot;

one sub-frame;

one micro-slot.

Referring to fig. 15, the present invention also provides a terminal 1500, as shown in fig. 15, including:

a sending module 1501, configured to send at least two downlink transmissions, where HARQ-ACKs of the at least two downlink transmissions are transmitted in a same time unit;

a determining module 1502, configured to determine, according to PUCCH resources indicated by PRI in DCI used by the at least two downlink transmissions respectively corresponding to the PDCCH, PUCCH resources used for transmitting HARQ-ACK of the at least two downlink transmissions;

a receiving module 1503, configured to receive HARQ-ACK of corresponding downlink transmission on the determined PUCCH resource.

Optionally, the determining module 1502 is specifically configured to:

a physical downlink shared channel, PDSCH;

Optionally, the time unit is any one of the following:

one time slot;

one sub-frame;

one micro-slot.

In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be physically included alone, or two or more units may be integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute some steps of the transceiving method according to various embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A Physical Uplink Control Channel (PUCCH) sending method is applied to a terminal and is characterized by comprising the following steps:

receiving at least two downlink transmissions, wherein hybrid automatic repeat request acknowledgements (HARQ-ACKs) of the at least two downlink transmissions are transmitted in the same time unit;

determining PUCCH resources used for transmitting HARQ-ACK of at least two downlink transmissions according to PUCCH resources indicated by a PUCCH resource indication field PRI in downlink control information DCI used by the physical downlink control channels PDCCH respectively corresponding to the at least two downlink transmissions;

sending corresponding HARQ-ACK of downlink transmission on the determined PUCCH resources;

the determining, according to the PUCCH resources indicated by the PRI in the DCI used by the at least two downlink transmissions respectively corresponding to the PDCCH, PUCCH resources for transmitting HARQ-ACK of the at least two downlink transmissions includes:

determining, according to whether PUCCH resources indicated by PRI in DCI used by the at least two downlink transmissions respectively overlap in a time domain, PUCCH resources used for transmitting HARQ-ACK of the at least two downlink transmissions;

determining, according to whether PUCCH resources indicated by PRI in DCI used by the at least two downlink transmissions respectively correspond to the at least two downlink transmissions overlap in a time domain, PUCCH resources used for transmitting HARQ-ACK of the at least two downlink transmissions, including:

in the at least two downlink transmissions, downlink transmissions in which the PUCCH resources indicated by the PRI in the DCI used by the corresponding PDCCH are overlapped in the time domain are taken as a group, and the PUCCH resources indicated by the PRI in the DCI used by any one of the PDCCH or the last PDCCH in the group of downlink transmissions are determined to be the PUCCH resources used for transmitting the HARQ-ACK of the group of downlink transmissions; alternatively, the first and second electrodes may be,

2. The transmission method of claim 1, wherein the determining the PUCCH resources for transmitting the HARQ-ACKs for the at least two downlink transmissions according to whether there is an overlap in a time domain of PUCCH resources indicated by PRIs in the DCIs used by the PDCCHs respectively corresponding to the at least two downlink transmissions comprises:

3. The transmission method according to claim 2, wherein the PUCCH resource is a PUCCH resource indicated by a PRI in DCI used by any one PDCCH among the PDCCHs respectively corresponding to the at least two downlink transmissions;

4. The transmission method of claim 3, wherein when the PUCCH resource is a PUCCH resource indicated by a PRI in DCI used by any one of the PDCCHs respectively corresponding to the at least two downlink transmissions: the PUCCH resources indicated by the PRI in the DCI used by the PDCCH respectively corresponding to the at least two downlink transmissions are the same;

5. The transmission method of claim 1, wherein the determining the PUCCH resources for transmitting the HARQ-ACKs for the at least two downlink transmissions according to whether there is an overlap in a time domain of PUCCH resources indicated by PRIs in the DCIs used by the PDCCHs respectively corresponding to the at least two downlink transmissions comprises:

6. The transmission method of claim 1, wherein PRIs in DCIs used in PDCCHs respectively corresponding to a plurality of downlink transmissions belonging to a same group indicate a same or different PUCCH resources, and when different PUCCH resources are indicated, there is an overlap in a time domain between one PUCCH resource and at least another PUCCH resource.

7. The transmission method of claim 1, wherein PRIs in DCI used by PDCCHs respectively corresponding to a plurality of downlink transmissions belonging to different groups indicate different PUCCH resources, and wherein the different PUCCH resources do not overlap with each other in a time domain.

8. The transmission method of claim 1, wherein the downlink transmission comprises any one or more of:

a physical downlink shared channel, PDSCH;

9. The transmission method of claim 8, wherein when the downlink transmission includes a PDCCH indicating a downlink SPS resource release, the PDCCH corresponding to the downlink transmission is: and the PDCCH indicates the release of the downlink SPS resources.

10. The transmission method of claim 1, wherein the time unit is any one of:

one time slot;

one sub-frame;

one micro-slot.

11. A Physical Uplink Control Channel (PUCCH) receiving method is applied to a base station and is characterized by comprising the following steps:

sending at least two downlink transmissions, wherein hybrid automatic repeat request acknowledgements (HARQ-ACKs) of the at least two downlink transmissions are transmitted in the same time unit;

receiving HARQ-ACK of corresponding downlink transmission on the determined PUCCH resources;

determining PUCCH resources used for transmitting HARQ-ACK of the at least two downlink transmissions according to whether PUCCH resources indicated by PRI in DCI used by the at least two downlink transmissions respectively have overlap on a time domain;

12. The receiving method of claim 11, wherein the determining the PUCCH resources for transmitting the HARQ-ACKs of the at least two downlink transmissions according to whether there is an overlap in a time domain of PUCCH resources indicated by PRIs in the DCI used by the PDCCH corresponding to the at least two downlink transmissions respectively comprises:

13. The receiving method according to claim 12, wherein the PUCCH resource is a PUCCH resource indicated by a PRI in DCI used by any one PDCCH among PDCCHs respectively corresponding to the at least two downlink transmissions;

14. The receiving method according to claim 13, wherein when the PUCCH resource is a PUCCH resource indicated by a PRI in DCI used by any one PDCCH among PDCCHs respectively corresponding to the at least two downlink transmissions: the PUCCH resources indicated by the PRI in the DCI used by the PDCCH respectively corresponding to the at least two downlink transmissions are the same;

15. The receiving method of claim 11, wherein the determining the PUCCH resources for transmitting the HARQ-ACKs of the at least two downlink transmissions according to whether there is an overlap in a time domain of PUCCH resources indicated by PRIs in the DCI used by the PDCCH corresponding to the at least two downlink transmissions respectively comprises:

16. The receiving method of claim 11, wherein PRIs in DCIs used by PDCCHs respectively corresponding to a plurality of downlink transmissions belonging to a same group indicate same or different PUCCH resources, and when different PUCCH resources are indicated, there is overlap in a time domain between one PUCCH resource and at least one other PUCCH resource.

17. The receiving method according to claim 11, wherein PRIs in DCIs used by PDCCHs respectively corresponding to a plurality of downlink transmissions belonging to different groups indicate different PUCCH resources, and there is no overlap in time domain between the different PUCCH resources.

18. The receiving method of claim 11, wherein the downlink transmission comprises any one or more of:

a physical downlink shared channel, PDSCH;

19. The receiving method of claim 18, wherein when the downlink transmission includes a PDCCH indicating a downlink SPS resource release, the PDCCH corresponding to the downlink transmission is: and the PDCCH indicates the release of the downlink SPS resources.

20. The receiving method of claim 11, wherein the time unit is any one of:

one time slot;

one sub-frame;

one micro-slot.

21. A terminal, comprising:

a receiving module, configured to receive at least two downlink transmissions, where hybrid automatic repeat request acknowledgements (HARQ-ACKs) of the at least two downlink transmissions are transmitted in a same time unit;

a determining module, configured to determine, according to PUCCH resources indicated by a PUCCH resource indication field PRI in downlink control information DCI used by the at least two downlink transmission PDCCH corresponding to the at least two downlink transmissions, PUCCH resources used for transmitting HARQ-ACK of the at least two downlink transmissions;

a sending module, configured to send a corresponding HARQ-ACK for downlink transmission on the determined PUCCH resource;

the determining module is specifically configured to:

22. The terminal of claim 21, wherein the determining module is specifically configured to:

23. The terminal of claim 22, wherein the PUCCH resource is a PUCCH resource indicated by a PRI in DCI used by any one of the at least two PDCCHs corresponding to the downlink transmission, respectively;

24. The terminal of claim 23, wherein when the PUCCH resource is a PUCCH resource indicated by a PRI in DCI used by any one of the at least two PDCCHs corresponding to the downlink transmission, the PUCCH resource is: the PUCCH resources indicated by the PRI in the DCI used by the PDCCH respectively corresponding to the at least two downlink transmissions are the same;

25. The terminal of claim 21, wherein the determining module is specifically configured to:

26. The terminal of claim 21, wherein PRIs in DCIs used by PDCCHs respectively corresponding to a plurality of downlink transmissions belonging to a same group indicate same or different PUCCH resources, and wherein when different PUCCH resources are indicated, there is overlap in a time domain between one PUCCH resource and at least one other PUCCH resource.

27. The terminal of claim 21, wherein PRIs in DCI used by PDCCHs respectively corresponding to a plurality of downlink transmissions belonging to different groups indicate different PUCCH resources, and wherein the different PUCCH resources do not overlap with each other in a time domain.

28. The terminal of claim 21, wherein the downlink transmission comprises any one or more of:

a physical downlink shared channel, PDSCH;

29. The terminal of claim 28, wherein when the downlink transmission includes a PDCCH indicating a release of downlink SPS resources, the downlink transmission corresponds to the PDCCH being: and the PDCCH indicates the release of the downlink SPS resources.

30. The terminal of claim 21, wherein the time unit is any one of:

one time slot;

one sub-frame;

one micro-slot.

31. A base station, comprising:

a sending module, configured to send at least two downlink transmissions, where hybrid automatic repeat request acknowledgements (HARQ-ACKs) of the at least two downlink transmissions are transmitted in a same time unit;

a determining module, configured to determine, according to PUCCH resources indicated by a PUCCH resource indication field PRI in downlink control information DCI used by the at least two downlink transmissions respectively corresponding to a physical downlink control channel PDCCH, PUCCH resources used for transmitting HARQ-ACK of the at least two downlink transmissions;

a receiving module, configured to receive a corresponding downlink-transmitted HARQ-ACK on the determined PUCCH resource;

the determining module is specifically configured to:

32. The base station of claim 31, wherein the determining module is specifically configured to:

33. The base station of claim 32, wherein the PUCCH resource is a PUCCH resource indicated by a PRI in DCI used by any one of the at least two PDCCHs corresponding to the downlink transmission, respectively;

34. The base station of claim 33, wherein when the PUCCH resource is a PUCCH resource indicated by a PRI in DCI used by any one of the at least two PDCCHs corresponding to the downlink transmission, the PUCCH resource is: the PUCCH resources indicated by the PRI in the DCI used by the PDCCH respectively corresponding to the at least two downlink transmissions are the same;

35. The base station of claim 31, wherein the determining module is specifically configured to:

36. The base station of claim 31, wherein PRIs in DCI used by PDCCHs respectively corresponding to a plurality of downlink transmissions belonging to a same group indicate a same or different PUCCH resources, and when different PUCCH resources are indicated, there is an overlap in a time domain between one PUCCH resource and at least another PUCCH resource.

37. The base station of claim 31, wherein PRIs in DCI used by PDCCHs respectively corresponding to a plurality of downlink transmissions belonging to different groups indicate different PUCCH resources, and wherein the different PUCCH resources do not overlap with each other in a time domain.

38. The base station of claim 31, wherein the downlink transmission comprises any one or more of:

a physical downlink shared channel, PDSCH;

39. The base station of claim 38, wherein when the downlink transmission comprises a PDCCH indicating a release of downlink SPS resources, the PDCCH corresponding to the downlink transmission is: and the PDCCH indicates the release of the downlink SPS resources.

40. The base station of claim 31, wherein the time unit is any one of:

one time slot;

one sub-frame;

one micro-slot.

41. A terminal, comprising: processor, memory and program stored on and executable on the memory, which when executed by the processor implements the steps of the physical uplink control channel, PUCCH, transmission method according to any one of claims 1 to 10.

42. A base station, comprising: processor, memory and program stored on the memory and executable on the processor, which when executed by the processor, implement the steps of the physical uplink control channel, PUCCH, receiving method according to any one of claims 11 to 20.

43. A computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, implements the steps in the physical uplink control channel, PUCCH, transmission method according to any one of claims 1 to 10;

alternatively, the computer program realizes the steps in the physical uplink control channel, PUCCH, receiving method according to any one of claims 11 to 20 when executed by a processor.