CN111432477B

CN111432477B - Data transmission method, network side equipment and terminal

Info

Publication number: CN111432477B
Application number: CN201910022383.5A
Authority: CN
Inventors: 王飞; 李岩; 金婧; 王菡凝; 王启星; 刘光毅; 丁海煜; 黄宇红
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2019-01-10
Filing date: 2019-01-10
Publication date: 2023-04-07
Anticipated expiration: 2039-01-10
Also published as: WO2020143611A1; CN111432477A

Abstract

The invention provides a data transmission method, network side equipment and a terminal. The method is applied to network side equipment and comprises the following steps: and sending Downlink Control Information (DCI) to a terminal, wherein the Physical Uplink Control Channel (PUCCH) resource indication information in the DCI is used for indicating a PUCCH resource group, and the PUCCH resource group comprises at least one PUCCH resource. By adopting the method of the embodiment of the invention, the network side equipment sends the DCI to the terminal, and the PUCCH resource indication information in the DCI is used for indicating a PUCCH resource group, so that the terminal can perform hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback of a Physical Downlink Shared Channel (PDSCH) corresponding to the DCI according to the PUCCH resource in the PUCCH resource group, and avoid the overlapping of the PUCCH resources corresponding to the HARQ-ACKs corresponding to different TRPs fed back in the same slot.

Description

Data transmission method, network side equipment and terminal

Technical Field

The present invention relates to the field of wireless technologies, and in particular, to a data transmission method, a network side device, and a terminal.

Background

Currently, according to a Transmission mode of a Physical Downlink Control Channel (PDCCH), a non-coherent joint Transmission (NCJT) Transmission can be divided into 2 types: one is Multi-TRP NCJT Transmission based on a Single PDCCH, and in this Transmission scheme, a User Equipment (UE) may also be referred to as a terminal, and only one PDCCH can be received within one Transmission Time Interval (TTI); one is Multiple-TRP NCJT transmission based on Multiple PDCCH, in which the UE can receive Multiple PDCCHs in one TTI, respectively from different TRPs.

For the Multi-TRP NCJT transmission mode based on the Multiple PDCCH, the PDCCH itself does not need to be designed much, but only needs the UE to have the capability of monitoring Multiple PDCCHs in one TTI, and then receives Multiple independently scheduled Physical Downlink Shared Channels (PDSCHs). But how the UE performs hybrid automatic repeat request (HARQ) feedback and transmission for multiple independent PDSCHs requires some enhanced design. In general, there are 2 design ideas:

one is HARQ-ACK feedback based on a single Physical Uplink Control CHannel (PUCCH), that is, for multiple PDSCHs scheduled by multiple PDCCHs received in one slot, the corresponding HARQ-ACK information of the UE is fed back in the same PUCCH;

one is HARQ-ACK feedback based on Multiple PUCCH, that is, the UE feeds back HARQ-ACK information corresponding to Multiple PDSCHs scheduled by Multiple PDCCHs received in one slot in different PUCCHs respectively.

At present, the feedback timing from the PDSCH to the corresponding HARQ-ACK in the R15 protocol is jointly indicated by a higher layer signaling configuration (dl-DataToUL-ACK) and a dynamic signaling configuration (PDSCH-to-HARQ _ feedback timing indicator), that is, a timing set is configured by the higher layer signaling, downlink Control Information (DCI) dynamically selects a timing relationship in the set to indicate, and a PUCCH resource used for carrying the HARQ-ACK is indicated by a PUCCH resource indicator (PUCCH resource indicator) in the DCI.

Based on the above manner, it is easy to find that there may be a case that HARQ-ACKs of multiple PDSCHs of the same Serving Cell need to be transmitted in the same slot, and there are two manners for determining HARQ-ACK coded index codebook at the current New Radio (NR): and the two modes are a semi-static indication mode and a dynamic indication mode, and the HARQ-ACK of the multiple PDSCHs are multiplexed in one PUCCH for transmission.

Further, with the above HARQ-ACK information feedback method based on Multiple PUCCH, if different TRPs independently determine PUCCH resource indicators in DCI corresponding to respective PDSCHs, there may be a case where PUCCHs corresponding to HARQ-ACKs corresponding to Multiple PDSCHs from different TRPs are transmitted in the same uplink slot, and further there may be a case where time and frequency domain resources transmitted by the Multiple PUCCHs overlap, and therefore there may be a case where PUCCH resources corresponding to HARQ-ACKs corresponding to different TRPs fed back by a UE in the same slot overlap.

Disclosure of Invention

The technical scheme of the invention aims to provide a data transmission method, network side equipment and a terminal, which are used for avoiding the overlapping of PUCCH resources corresponding to HARQ-ACKs which are fed back by UE in the same slot and correspond to different TRPs.

The embodiment of the invention provides a data transmission method, which is applied to network side equipment, wherein the method comprises the following steps:

and sending Downlink Control Information (DCI) to a terminal, wherein the Physical Uplink Control Channel (PUCCH) resource indication information in the DCI is used for indicating a PUCCH resource group, and the PUCCH resource group comprises at least one PUCCH resource.

Optionally, the data transmission method further includes:

acquiring at least one pre-configured PUCCH resource set, wherein the PUCCH resource set comprises at least one PUCCH resource group;

and selecting one of the PUCCH resource groups in the PUCCH resource set as the PUCCH resource group indicated in the PUCCH resource indication information.

Optionally, in the data transmission method, in the step of obtaining the at least one preconfigured PUCCH resource set, the data transmission method further includes:

and acquiring the PUCCH resource set through high-level signaling configuration, or acquiring the PUCCH resource set through dynamic signaling configuration.

Optionally, in the data transmission method, in the step of sending the DCI to the terminal, the PUCCH resource group is indicated by PUCCH resource indication information in DCI format 1_0 or DCI format 1_1.

The embodiment of the invention also provides a data transmission method which is applied to a terminal, wherein the method comprises the following steps:

monitoring Downlink Control Information (DCI) sent by network side equipment, wherein Physical Uplink Control Channel (PUCCH) resource indication information in the DCI is used for indicating one PUCCH resource group, and the PUCCH resource group comprises at least one PUCCH resource;

and determining one PUCCH resource for hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback based on the PUCCH resource group.

Optionally, in the data transmission method, the step of monitoring the DCI sent by the network side device includes:

monitoring DCI (downlink control information) sent by network side equipment and corresponding to at least two PDSCHs; the PUCCH resource indication information in the DCI corresponding to each PDSCH is respectively used for indicating the corresponding PUCCH resource group;

the determining one PUCCH resource for hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback based on the PUCCH resource group comprises the following steps:

selecting one PUCCH resource from each PUCCH resource group respectively to form a plurality of PUCCH resource combinations;

selecting a PUCCH resource in a target PUCCH resource combination of the plurality of PUCCH resource combinations for feedback of HARQ-ACK of each PDSCH. Optionally, in the data transmission method, after the forming of the plurality of PUCCH resource combinations, the method further includes:

determining a resource combination type of each PUCCH resource combination; wherein the resource combination type is a first type in which PUCCH resources in the PUCCH resource combination are not completely overlapped in a time domain and a frequency domain, a second type in which at least a part of the PUCCH resources in the PUCCH resource combination are overlapped in the time domain or the frequency domain, or a third type in which the PUCCH resources in the PUCCH resource combination are completely overlapped in the time domain and the frequency domain;

and determining the target PUCCH resource combination according to the resource combination type of each PUCCH resource combination.

Optionally, the data transmission method, wherein the determining the target PUCCH resource combination according to the resource combination type of each PUCCH resource combination includes:

when the resource combination type of at least one PUCCH resource combination in the plurality of PUCCH resource combinations is the first type, determining the target PUCCH resource combination to be one PUCCH resource combination of which the resource combination type is the first type;

when the resource combination type of any one PUCCH resource combination in the plurality of PUCCH resource combinations is not the first type and the resource combination type of at least one PUCCH resource combination is the second type, determining the target PUCCH resource combination as one PUCCH resource combination of which the resource combination type is the second type;

and when the resource combination type of each PUCCH resource combination is a third type in the plurality of PUCCH resource combinations, determining that the target PUCCH resource combination is one PUCCH resource combination of which the resource combination type is the third type.

Optionally, the data transmission method, wherein when a resource combination type of at least two PUCCH resource combinations in the PUCCH resource combinations is the first type, the determining that the target PUCCH resource combination is one PUCCH resource combination of which the resource combination type is the first type includes:

according to a first preset rule, determining one PUCCH resource combination with the resource combination type of the first type as the target PUCCH resource combination;

wherein the first preset rule comprises:

determining that, of all PUCCH resource combinations with the resource combination type of the first type, the PUCCH resource combination with the smallest index value of PUCCH resources belonging to the first PUCCH resource group is the target PUCCH resource combination;

and if the number of PUCCH resource combinations with the minimum index values of the PUCCH resources belonging to the first PUCCH resource group is at least two, determining the PUCCH resource combination with the minimum index values of the PUCCH resources belonging to the second PUCCH resource group as the target PUCCH resource combination.

Optionally, the data transmission method, wherein when a resource combination type of any one PUCCH resource combination in the PUCCH resource combinations is not the first type and resource combination types of at least two PUCCH resource combinations are the second type, the determining that the target PUCCH resource combination is one PUCCH resource combination of which the resource combination type is the second type includes:

according to a second preset rule, determining one PUCCH resource combination with the resource combination type of the second type as the target PUCCH resource combination;

wherein the second preset rule comprises:

determining the PUCCH resource combination with the least time-frequency resource overlapping as the target PUCCH resource combination in at least two PUCCH resource combinations with the resource combination type of the second type;

if the number of the PUCCH resource combinations with the least time-frequency resource overlap is at least two, determining that the PUCCH resource combination with the least time-frequency resource overlap, of the at least two PUCCH resource combinations with the least time-frequency resource overlap, which belongs to the first PUCCH resource group and has the smallest index value, is the target PUCCH resource combination;

Optionally, the data transmission method, wherein when the resource combination type of each PUCCH resource combination in the plurality of PUCCH resource combinations is a third type, determining that the target PUCCH resource combination is one PUCCH resource combination having the resource combination type of the third type includes:

according to a third preset rule, determining one PUCCH resource combination with the resource combination type of the third type as the target PUCCH resource combination;

wherein the third preset rule comprises:

and determining that the PUCCH resource combination with the least uplink control information UCI digit of each PUCCH resource included in at least two PUCCH resource combinations with the resource combination type of the third type is a target PUCCH resource combination.

The embodiment of the present invention further provides a network side device, which includes a processor and a transceiver, where the transceiver is configured to:

Optionally, in the network-side device, the processor is configured to:

Optionally, when the processor of the network side device acquires at least one preconfigured PUCCH resource set, the processor is specifically configured to:

Optionally, when the transceiver transmits the downlink control information DCI to the terminal, the network side device indicates the PUCCH resource group through PUCCH resource indication information in DCI format 1_0 or DCI format 1_1.

The embodiment of the present invention further provides a terminal, including a processor and a transceiver, where the transceiver is configured to:

Optionally, in the terminal, when the transceiver monitors DCI sent by a network side device, the transceiver is specifically configured to:

selecting a PUCCH resource in a target PUCCH resource combination of the plurality of PUCCH resource combinations for feedback of HARQ-ACK of each PDSCH.

Optionally, in the terminal, after forming the plurality of PUCCH resource combinations, the processor is configured to:

Optionally, in the terminal, the processor determines the target PUCCH resource combination according to the resource combination type of each PUCCH resource combination, specifically:

and when the resource combination type of each PUCCH resource combination in the plurality of PUCCH resource combinations is a third type, determining the target PUCCH resource combination as one of the PUCCH resource combinations with the resource combination type of the third type.

Optionally, in the terminal, when a resource combination type of at least two PUCCH resource combinations in the plurality of PUCCH resource combinations is the first type, the processor determines that the target PUCCH resource combination is one PUCCH resource combination whose resource combination type is the first type, specifically:

wherein the first preset rule comprises:

determining a PUCCH resource combination with the smallest index value of PUCCH resources belonging to a first PUCCH resource group in all PUCCH resource combinations with the resource combination type of the first type as the target PUCCH resource combination;

Optionally, in the terminal, when a resource combination type of any one of the PUCCH resource combinations is not the first type and a resource combination type of at least two of the PUCCH resource combinations is the second type, the processor determines that the target PUCCH resource combination is one of the PUCCH resource combinations whose resource combination type is the second type, specifically:

wherein the second preset rule comprises:

determining the PUCCH resource combination with the least time-frequency resource overlapping as the target PUCCH resource combination from at least two PUCCH resource combinations with the resource combination type of the second type;

Optionally, in the terminal, when the resource combination type of each PUCCH resource combination in the plurality of PUCCH resource combinations is a third type, the processor determines that the target PUCCH resource combination is one PUCCH resource combination whose resource combination type is the third type, specifically:

wherein the third preset rule comprises:

and determining the PUCCH resource combination with the least uplink control information UCI bits of each PUCCH resource included in at least two PUCCH resource combinations with the resource combination type of the third type as a target PUCCH resource combination.

The embodiment of the invention also provides network side equipment, which comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor; wherein the processor, when executing the program, implements the data transmission method as described in any one of the above.

The embodiment of the invention also provides a terminal, which comprises a memory, a processor and a computer program which is stored on the memory and can be run on the processor; wherein the processor, when executing the program, implements the data transmission method as described in any one of the above.

An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps in the data transmission method as described in any one of the above.

At least one of the above technical solutions of the present invention has the following beneficial effects:

according to the data transmission method, the network side equipment sends the downlink control information DCI to the terminal, the PUCCH resource indication information in the DCI is used for indicating a PUCCH resource group, so that the terminal can perform hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback of a Physical Downlink Shared Channel (PDSCH) corresponding to the DCI according to the PUCCH resource in the PUCCH resource group, and the phenomenon that the PUCCH resources corresponding to the HARQ-ACKs corresponding to different TRPs fed back in the same slot are overlapped is avoided.

Drawings

Fig. 1 is a schematic diagram of a wireless communication system to which the data transmission method according to the embodiment of the present invention is applied;

fig. 2 is a schematic flowchart illustrating a data transmission method according to an embodiment of the invention;

fig. 3 is a schematic flowchart of a data transmission method according to another embodiment of the present invention;

fig. 4 is a schematic structural diagram of a network device according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a network side device according to another embodiment of the present invention;

fig. 7 is a schematic structural diagram of a terminal according to another embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments. The data transmission method provided by the embodiment of the invention is applied to a wireless communication system, and the wireless communication system can be a 5G system, an evolved Long Term Evolution (eLTE) system or a subsequent Evolution communication system. Referring to fig. 1, an architecture diagram of a wireless communication system according to an embodiment of the present invention is shown. As shown in fig. 1, the wireless communication system may include: the network side device 10 and the user equipment, for example, the user equipment are denoted as UE11, and the UE11 may be connected to the network side device 10. In practical applications, the connections between the above devices may be wireless connections, and fig. 1 illustrates the connections between the devices by solid lines for convenience and convenience in visual representation.

It should be noted that the communication system may include a plurality of UEs, and the network side device may communicate (transmit signaling or transmit data) with the plurality of UEs.

The network side device 10 provided in the embodiment of the present invention may be a base station, which may be a commonly used base station, an evolved node base station (eNB), or a network side device in a 5G system (for example, a next generation base station (gNB), a Transmission and Reception Point (TRP), or a cell) and the like.

The user equipment provided by the embodiment of the invention can be a Mobile phone, a tablet Computer, a notebook Computer, an Ultra-Mobile Personal Computer (UMPC), a netbook or a Personal Digital Assistant (PDA), and the like.

In order to solve the problem that the HARQ-ACK information feedback mode based on Multiple PUCCH makes UE possibly overlap PUCCH resources corresponding to HARQ-ACK corresponding to different TRPs fed back in the same slot, the data transmission method provided by the embodiment of the invention enables network side equipment to send downlink control information DCI to a terminal, and PUCCH resource indication information in the DCI is used for indicating a PUCCH resource group, so that the terminal can perform hybrid automatic repeat request acknowledgement HARQ-ACK feedback of a physical downlink shared channel PDSCH corresponding to the DCI according to the PUCCH resources in the PUCCH resource group, and avoids the overlapping of the PUCCH resources corresponding to the HARQ-ACK corresponding to different TRPs fed back in the same slot.

Specifically, the data transmission method according to the embodiment of the present invention is applied to a network side device, and as shown in fig. 2, the method includes:

s210, sending downlink control information DCI to a terminal, wherein the physical uplink control channel PUCCH resource indication information in the DCI is used for indicating a PUCCH resource group, and the PUCCH resource group comprises at least one PUCCH resource.

Compared with the prior art that the PUCCH resource indication information in the DCI indicates a PUCCH resource, the data transmission method in the embodiment of the invention indicates the PUCCH resource group comprising at least one PUCCH resource to the terminal through the DCI, so that the terminal can select one PUCCH resource to perform feedback of hybrid automatic repeat request acknowledgement (HARQ-ACK) of a Physical Downlink Shared Channel (PDSCH) corresponding to the DCI according to the PUCCH resource in the PUCCH resource group, and avoid the overlapping of the PUCCH resources corresponding to different TRPs fed back in the same slot.

Optionally, the method further comprises:

and selecting one PUCCH resource group in the PUCCH resource set as the PUCCH resource group indicated in the PUCCH resource indication information.

By adopting the data transmission method provided by the embodiment of the invention, the network side equipment can configure PUCCH Resource sets for the terminal, each PUCCH Resource Set comprises at least one PUCCH Resource Group, one PUCCH Resource Group in the PUCCH Resource sets is selected as the PUCCH Resource Group indicated in the PUCCH Resource indication information before the step S210 is executed, and the PUCCH Resource Group is indicated to the terminal through the PUCCH Resource indication information in the DCI.

In the above manner, for example, in the standard TS38.331, it can be performed by a method similar to the following:

in the embodiment of the present invention, in the step of acquiring at least one pre-configured PUCCH resource set:

In addition, in step S210, in the step of transmitting the downlink control information DCI to the terminal, the PUCCH resource group is indicated by PUCCH resource indication information in DCI format 1_0 or DCI format 1_1.

In this way, the PUCCH resource group including at least one PUCCH resource may be indicated to the terminal through the PUCCH resource indication information in the DCI.

Preferably, in step S210, a PUCCH resource group including at least two PUCCH resources is indicated to the terminal through PUCCH resource indication information in the DCI.

Another aspect of the embodiments of the present invention further provides a data transmission method, which is applied to a terminal, and as shown in fig. 3, the method includes:

s310, monitoring downlink control information DCI sent by network side equipment, wherein the physical uplink control channel PUCCH resource indication information in the DCI is used for indicating one PUCCH resource group, and the PUCCH resource group comprises at least one PUCCH resource;

and S320, determining a PUCCH resource for hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback based on the PUCCH resource group.

In the data transmission method of the embodiment of the invention, after monitoring DCI sent by network side equipment, a terminal determines to indicate a PUCCH resource group according to PUCCH resource indication information in the DCI, and when a hybrid automatic repeat request of DSCH corresponding to the DCI confirms the feedback of HARQ-ACK, one PUCCH resource in the PUCCH resource group can be selected to perform the feedback of HARQ-ACK.

Specifically, in one implementation manner of the data transmission method according to the embodiment of the present invention, in step S310, the step of monitoring the downlink control information DCI sent by the network side device includes:

based on the above manner, in step S320, the determining one PUCCH resource for feedback of HARQ-ACK based on the PUCCH resource group includes:

It can be understood that the DCI received by the terminal is carried by the PDCCH, and when two PDCCHs transmitted by the network side device are acquired, PUCCH resource indication information in the DCI in the two PDCCHs is respectively used for indicating corresponding PUCCH resource groups.

Specifically, when a PUCCH Resource in a target PUCCH Resource combination of multiple PUCCH Resource combinations is selected for feedback of HARQ-ACKs of multiple PDSCHs, the UE may distinguish the two PDCCHs according to an explicit or implicit indication or a preset rule into a first PDCCH and a second PDCCH, where a PUCCH corresponding to the first PDCCH is referred to as a first PUCCH, a PUCCH corresponding to the second PDCCH is referred to as a second PUCCH, a PUCCH Resource Group indicated by PUCCH Resource indication information of the first PDCCH is represented as PUCCH Resource Group 1, and a PUCCH Resource Group indicated by PUCCH Resource indication information of the second PDCCH is represented as PUCCH Resource Group 2.

Based on the above manner, in step S320, the UE may select one PUCCH Resource from the PUCCH Resource Group 1 and the PUCCH Resource Group 2 to form one PUCCH Resource Combination, and when a plurality of PUCCH resources are included in the PUCCH Resource Group 1 and the PUCCH Resource Group 2, a plurality of PUCCH Resource combinations may be formed for each of the plurality of PUCCH resources in the PUCCH Resource Group 1 and the PUCCH Resource Group 2.

For example, multiple PUCCH resources in PUCCH Resource Group 1 and multiple PUCCH resources in PUCCH Resource Group 2 are combined, and if there are N optional combinations, N PUCCH Resource combinations may be formed by combining, where each PUCCH Resource Combination includes two PUCCH resources, where a first PUCCH Resource is from PUCCH Resource Group 1 and a second PUCCH Resource is from PUCCH Resource Group 2.

Based on the formed plurality of PUCCH Resource combinations, the terminal can select one PUCCH Resource Combination as a target PUCCH Resource Combination, and perform HARQ-ACK feedback corresponding to each PDSCH according to the PUCCH Resource in the target PUCCH Resource Combination.

By adopting the above mode, when the UE needs to transmit two corresponding PUCCHs in the same slot according to the indication of the two PDCCHs and performs the feedback of the HARQ-ACK of each PDSCH corresponding to the DCI, one target PUCCH resource combination in a plurality of PUCCH resource combinations can be selected, and the overlapping of PUCCH resources corresponding to the HARQ-ACKs corresponding to different TRPs fed back in the same slot is avoided.

The above description takes two cases where the UE needs to transmit two corresponding PUCCHs in the same slot according to the indication of the two PDCCHs, and forms PUCCH resources in PUCCH Resource Combination, and it can be understood that, when more than two PUCCHs need to be transmitted in the same slot, the number of PUCCH resources in the plurality of PUCCH Resource combinations may be more than two.

In this embodiment of the present invention, after forming a plurality of PUCCH resource combinations, the method further includes:

Specifically, by adopting the above manner, the resource combination type of a plurality of PUCCH resource combinations formed by PUCCH resources respectively selected from each PUCCH resource group is determined, whether the resource combination type of each PUCCH resource combination is of the first type, the second type or the third type is determined, and according to the determined resource combination type, a target PUCCH resource combination can be determined according to a preset rule, and the PUCCH resources in the target PUCCH resource combination can be used for performing HARQ-ACK feedback corresponding to at least two PDSCHs in the same slot.

Specifically, determining a preset rule of a target PUCCH resource combination, that is, determining the target PUCCH resource combination according to a resource combination type of each PUCCH resource combination, includes:

when the resource combination type of any one PUCCH resource combination in the plurality of PUCCH resource combinations is not the first type, and the resource combination type of at least one PUCCH resource combination is the second type, determining that the target PUCCH resource combination is one PUCCH resource combination of which the resource combination type is the second type;

Specifically, with the above selection method, the priority order of the selection target PUCCH resource combination in the plurality of PUCCH resource combinations is the PUCCH resource combination of the first type, the PUCCH resource combination of the second type, and the PUCCH resource combination of the third type. In this way, when the UE performs feedback of HARQ-ACK for hybrid automatic repeat request acknowledgement for PDSCH corresponding to DCI, the PUCCH resource combination of the first type may be preferentially selected, that is, the PUCCH resource combination including the PUCCH resources that are not overlapped completely in time domain and frequency domain may be preferentially selected, so as to avoid overlapping PUCCH resources corresponding to HARQ-ACKs corresponding to different TRPs that are fed back in the same slot. Further, when there is no PUCCH resource combination of the first type in multiple PUCCH resource combinations, PUCCH resource combinations of the second type may be further selected, that is, PUCCH resource combinations where only part of PUCCH resources overlap in a time domain or a frequency domain are preferentially selected, so as to reduce the probability that PUCCH resources corresponding to HARQ-ACKs corresponding to different TRPs fed back in the same slot overlap.

Optionally, in this embodiment of the present invention, when a resource combination type of at least two PUCCH resource combinations in the multiple PUCCH resource combinations is the first type, the determining that the target PUCCH resource combination is one PUCCH resource combination of which the resource combination type is the first type includes:

wherein the first preset rule comprises:

Specifically, after the UE acquires the DCI corresponding to the at least two PDSCHs sent by the network side device, the first PUCCH resource group and the second PUCCH resource group may be respectively used for the indicated PUCCH resource group according to PUCCH resource indication information in the DCI corresponding to each PDSCH, and the PUCCH resource groups respectively indicated by the multiple DCIs divided into the first PUCCH resource group, the second PUCCH resource group, and the like according to a display or implicit indication or according to a preset rule.

Optionally, in this embodiment of the present invention, when a resource combination type of any one of the PUCCH resource combinations is not the first type and a resource combination type of at least two of the PUCCH resource combinations is the second type, the determining that the target PUCCH resource combination is one of the PUCCH resource combinations whose resource combination type is the second type includes:

wherein the second preset rule comprises:

Optionally, when the resource combination type of each PUCCH resource combination in the plurality of PUCCH resource combinations is a third type, determining that the target PUCCH resource combination is one of PUCCH resource combinations having the resource combination type of the third type includes:

wherein the third preset rule comprises:

determining, as a target PUCCH resource combination, a PUCCH resource combination with a smallest Uplink Control Information (UCI) bit number of each PUCCH resource included in at least two PUCCH resource combinations with a resource combination type of the third type.

In the data transmission method according to the embodiment of the present invention, in step S320, one of the PUCCH resource groups is selected, and when the feedback of HARQ-ACK is determined by a hybrid automatic repeat request for a PDSCH of a physical downlink shared channel corresponding to the DCI, if the feedback of HARQ-ACK corresponding to each PDSCH is performed in the same slot, the feedback of HARQ-ACK of each PDSCH is performed in a one-to-one correspondence manner by using each PUCCH resource in the selected PUCCH resource group.

By adopting the data transmission method of the embodiment of the invention, the network side equipment sends the downlink control information DCI to the terminal, and the PUCCH resource indication information in the DCI is used for indicating a PUCCH resource group, so that the overlapping of PUCCH resources corresponding to HARQ-ACKs corresponding to different TRPs fed back by the terminal in the same slot can be avoided. In addition, by adopting the method provided by the embodiment of the invention, the NR can support a multiplex PUCCH-based HARQ-ACK feedback mode in Multi-TRP transmission under a non-ideal backhaul scene.

An embodiment of the present invention further provides a network-side device, as shown in fig. 4, including a processor 410 and a transceiver 420, where the transceiver 420 is configured to:

The network side equipment in the embodiment of the invention transmits the downlink control information DCI to the terminal, and the PUCCH resource indication information in the DCI is used for indicating a PUCCH resource group, so that the terminal can perform hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback of a Physical Downlink Shared Channel (PDSCH) corresponding to the DCI according to the PUCCH resource in the PUCCH resource group, and avoids the overlapping of the PUCCH resources corresponding to the HARQ-ACKs which are fed back in the same slot and correspond to different TRPs.

Optionally, the processor 410 is configured to:

Optionally, when acquiring the at least one preconfigured PUCCH resource set, the processor 410 is specifically configured to:

Optionally, when the transceiver 420 transmits the downlink control information DCI to the terminal, the PUCCH resource group is indicated by PUCCH resource indication information in DCI format 1_0 or DCI format 1_1.

An embodiment of the present invention further provides a terminal, as shown in fig. 5, including a processor 510 and a transceiver 520, where the transceiver 520 is configured to:

The terminal of the embodiment of the invention can select one PUCCH resource group to perform HARQ-ACK feedback when performing hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback of a Physical Downlink Shared Channel (PDSCH) corresponding to DCI after acquiring DCI sent by network side equipment and determining and indicating the PUCCH resource group according to PUCCH resource indication information in the DCI.

Optionally, in the terminal, when the transceiver 520 monitors the DCI sent by the network side device, the transceiver is specifically configured to:

selecting one PUCCH resource from each PUCCH resource group to form a plurality of PUCCH resource combinations;

Optionally, in the terminal, after the forming of the plurality of PUCCH resource combinations, the processor 510 is configured to:

determining a resource combination type of each PUCCH resource combination; wherein the resource combination type is a first type in which PUCCH resources in the PUCCH resource combination are not overlapped at all in time domain and frequency domain, a second type in which at least part of PUCCH resources in the PUCCH resource combination are overlapped in time domain or frequency domain, or a third type in which PUCCH resources in the PUCCH resource combination are overlapped at all in time domain and frequency domain;

Optionally, the processor 510 determines the target PUCCH resource combination according to the resource combination type of each PUCCH resource combination, specifically:

Optionally, when a resource combination type of at least two PUCCH resource combinations in the plurality of PUCCH resource combinations is the first type, the processor 510 determines that the target PUCCH resource combination is one PUCCH resource combination whose resource combination type is the first type, specifically:

wherein the first preset rule comprises:

Optionally, when a resource combination type of any one of the PUCCH resource combinations is not the first type and a resource combination type of at least two of the PUCCH resource combinations is the second type, the processor 510 determines that the target PUCCH resource combination is one of the PUCCH resource combinations whose resource combination type is the second type, specifically:

according to a second preset rule, determining one PUCCH resource combination with the resource combination type of the second type to be the target PUCCH resource combination;

wherein the second preset rule comprises:

Optionally, when the resource combination type of each PUCCH resource combination in the plurality of PUCCH resource combinations is a third type, the processor 510 determines that the target PUCCH resource combination is one PUCCH resource combination whose resource combination type is the third type, specifically:

wherein the third preset rule comprises:

As shown in fig. 6, the network-side device includes a memory 610, a processor 620, and a computer program stored in the memory 610 and capable of running on the processor 620. As shown in fig. 6, the network side device further includes a transceiver 630 and a bus interface 640.

Wherein, the processor 620 is used for reading the program in the memory 610;

a transceiver 630 for receiving and transmitting data under the control of the processor.

In addition, bus interface 640 may include any number of interconnected buses and bridges, with various circuits representing one or more processors, particularly processor 620, and memory, particularly memory. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 630 may be a number of elements, including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 620 is responsible for managing the bus architecture and general processing, and the memory may store data used by the processor in performing operations.

Specifically, the processor 620 is configured to:

Optionally, the processor 620 is further configured to:

Optionally, when acquiring the at least one preconfigured PUCCH resource set, the processor 620 is specifically configured to:

Optionally, when the processor 620 sends the downlink control information DCI to the terminal, the PUCCH resource group is indicated by PUCCH resource indication information in DCI format 1_0 or DCI format 1_1.

An embodiment of the present invention further provides a terminal, as shown in fig. 7, where the terminal includes a memory 720, a processor 710, and a computer program stored in the memory 720 and capable of running on the processor 710; in addition, the terminal includes a transceiver 730.

The processor 710 is configured to read a program in the memory 720, and specifically execute the following processes:

Optionally, in the terminal, the step of monitoring, by the processor 710, the downlink control information DCI sent by the network side device includes:

Optionally, in the terminal, after forming the plurality of PUCCH resource combinations, the processor 710 is configured to:

Optionally, the processor 710 determines the target PUCCH resource combination according to the resource combination type of each PUCCH resource combination, specifically:

Optionally, when a resource combination type of at least two PUCCH resource combinations in the plurality of PUCCH resource combinations is the first type, the processor 710 determines that the target PUCCH resource combination is one PUCCH resource combination whose resource combination type is the first type, specifically:

according to a first preset rule, determining one PUCCH resource combination with the resource combination type of the first type to be the target PUCCH resource combination;

wherein the first preset rule comprises:

Optionally, when a resource combination type of any one of the PUCCH resource combinations is not the first type and a resource combination type of at least two of the PUCCH resource combinations is the second type, the processor 710 determines that the target PUCCH resource combination is one of the PUCCH resource combinations whose resource combination type is the second type, specifically:

wherein the second preset rule comprises:

Optionally, when the resource combination type of each PUCCH resource combination in the plurality of PUCCH resource combinations is a third type, the processor 710 determines that the target PUCCH resource combination is one PUCCH resource combination whose resource combination type is the third type, specifically:

wherein the third preset rule comprises:

In addition, the terminal also includes a user interface 740 connected to the bus interface providing the interface. In FIG. 7, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 710, and various circuits, represented by memory 720, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The transceiver 730 may be a plurality of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The processor 710 is responsible for managing the bus architecture and general processing, and the memory 720 may store data used by the processor in performing operations.

The processor 710 is responsible for managing the bus architecture and general processing, and the memory 720 may store data used by the processor in performing operations.

In addition, the specific embodiment of the present invention also provides a computer readable storage medium, on which a computer program is stored, wherein the program, when executed by a processor, implements the steps in the data transmission method as described in any one of the above.

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 may be implemented in the form of hardware, or in the 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 for causing 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: a U-disk, a portable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other media capable of storing program codes.

While the preferred embodiments of the present invention have been described, 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.

Claims

1. A data transmission method is applied to a terminal, and is characterized in that the method comprises the following steps:

monitoring downlink control information DCI sent by network side equipment, wherein the physical uplink control channel PUCCH resource indication information in the DCI is used for indicating one PUCCH resource group, and the PUCCH resource group comprises at least one PUCCH resource;

determining one PUCCH resource for hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback based on the PUCCH resource group; wherein, the step of monitoring the downlink control information DCI sent by the network side device includes:

2. The data transmission method of claim 1, wherein after the forming the plurality of PUCCH resource combinations, the method further comprises:

3. The data transmission method according to claim 2, wherein the determining the target PUCCH resource combination according to the resource combination type of each PUCCH resource combination comprises:

4. The data transmission method according to claim 3, wherein when the resource combination type of at least two of the PUCCH resource combinations is the first type among the plurality of PUCCH resource combinations, the determining the target PUCCH resource combination as one of the PUCCH resource combinations having the resource combination type of the first type comprises:

wherein the first preset rule comprises:

5. The data transmission method according to claim 3, wherein when the resource combination type of any one of the plurality of PUCCH resource combinations is not the first type and the resource combination types of at least two of the PUCCH resource combinations are the second type, the determining the target PUCCH resource combination as the one of the PUCCH resource combinations with the resource combination type of the second type comprises:

wherein the second preset rule comprises:

if the number of the PUCCH resource combinations with the least time-frequency resource overlap is at least two, determining that the PUCCH resource combination with the least index value of the PUCCH resource belonging to the first PUCCH resource group in the at least two PUCCH resource combinations with the least time-frequency resource overlap is the target PUCCH resource combination;

6. The data transmission method according to claim 3, wherein when the resource combination type of each of the plurality of PUCCH resource combinations is a third type, determining the target PUCCH resource combination as one of the PUCCH resource combinations having the resource combination type of the third type comprises:

wherein the third preset rule comprises:

7. A terminal comprising a processor and a transceiver, wherein the transceiver is configured to:

determining one PUCCH resource for hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback based on the PUCCH resource group; when monitoring the DCI sent by the network side device, the transceiver is specifically configured to:

8. The terminal of claim 7, wherein after the forming the plurality of PUCCH resource combinations, the processor is configured to:

9. The terminal according to claim 8, wherein the processor determines the target PUCCH resource combination according to the resource combination type of each PUCCH resource combination, specifically:

10. The terminal according to claim 9, wherein when a resource combination type of at least two of the PUCCH resource combinations is the first type, the processor determines that the target PUCCH resource combination is one of the PUCCH resource combinations with the resource combination type of the first type, specifically:

wherein the first preset rule comprises:

11. The terminal according to claim 9, wherein when a resource combination type of any one of the PUCCH resource combinations is not the first type and resource combination types of at least two of the PUCCH resource combinations are the second type, the processor determines that the target PUCCH resource combination is one of the PUCCH resource combinations with the resource combination type of the second type, specifically:

wherein the second preset rule comprises:

12. The terminal according to claim 9, wherein when the resource combination type of each of the PUCCH resource combinations is a third type, the processor determines that the target PUCCH resource combination is one of PUCCH resource combinations having the resource combination type of the third type, specifically:

wherein the third preset rule comprises:

13. A terminal comprising a memory, a processor and a computer program stored on the memory and executable on the processor; characterized in that the processor, when executing the program, implements the data transmission method according to any one of claims 1 to 6.

14. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the data transmission method according to any one of claims 1 to 6.