CN111435874A - Data transmission method, base station and terminal - Google Patents

Abstract

The present invention provides a data transmission method, a base station and a terminal. The method includes: sending configuration information of a first physical uplink control channel PUCCH resource set of a terminal to a second base station. By adopting this method, the PUCCH resources are exchanged between at least two base stations connected to the terminal, so that the base stations respectively determine the PUCCH resources corresponding to the terminal for PUCCH information transmission with different base stations, so as to prevent the terminal from corresponding to different base stations in the same time slot. During HARQ‑ACK feedback, the used PUCCH resources overlap.

Description

Data transmission method, base station and terminal

technical field

The present invention relates to the field of wireless technology, and in particular, to a data transmission method, a base station and a terminal.

Background technique

At present, according to the transmission mode of the Physical Downlink Control Channel (PDCCH), the downlink Multi Transmission Reception Point (Multi-TRP) coherent joint transmission (non-coherent joint transmission, NCJT) transmission can be divided into There are two types: one is Multi-TRP NCJT transmission based on a single PDCCH. In this transmission method, user equipment (User Equipment, UE) can also be called a terminal, and in a transmission time interval (Transmission Time Interval, TTI) Only one PDCCH can be received in the system; one is Multi-TRP NCJT transmission based on Multiple PDCCH. In this transmission mode, the UE can receive multiple PDCCHs in one TTI, which are from different TRPs.

For the Multi-TRP NCJT transmission mode based on Multiple PDCCH, PDCCH itself does not need to do much enhancement design, but the UE needs to have the ability to monitor multiple PDCCHs in one TTI, and then receive multiple independently scheduled physical downlink shared channels (Physical Downlink Shared Channels). Downlink Shared Channel, PDSCH). However, how the UE performs hybrid automatic repeat request (hybrid automatic repeat request, HARQ) feedback and transmission on multiple independent PDSCHs requires some enhanced designs. In general, there are 2 design ideas:

One is the HARQ-acknowledgment ACK feedback based on the single physical uplink control channel (Physical Uplink Control CHannel, PUCCH). HARQ-ACK information is fed back in the same PUCCH;

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

At present, the feedback timing from PDSCH to corresponding HARQ-ACK in the R15 protocol is jointly indicated by the high-level signaling configuration (dl-DataToUL-ACK) and the dynamic signaling configuration (PDSCH-to-HARQ_feedback timing indicator), that is, the high-level signaling Configure a timing set, and the downlink control information (Downlink Control Information, DCI) dynamically selects a timing relationship in this set to indicate, and at the same time indicates the PUCCH resource used to carry HARQ-ACK through the PUCCH resource indicator (PUCCH resource indicator) in the DCI .

Based on the above methods, it is not difficult to find that it is possible that the HARQ-ACKs of multiple PDSCHs of the same serving cell need to be transmitted in the same time slot. Currently, there are two determinations for the New Radio (NR) HARQ-ACK coding index codebook mode: semi-static indication mode and dynamic indication mode, both of which will multiplex the HARQ-ACKs of the multiple PDSCHs in one PUCCH for transmission.

Further, for the above-mentioned HARQ-ACK information feedback method based on Multiple PUCCH, if different TRPs independently determine the PUCCH resource indicator in the DCI corresponding to each PDSCH, there may be HARQ-ACK corresponding to multiple PDSCHs from different TRPs. If the PUCCH is sent in the same uplink time slot, the time domain and frequency domain resources sent by these multiple PUCCHs may overlap. Therefore, the UE feedback in the same slot corresponds to the HARQ-ACK corresponding to different TRPs. PUCCH resources may overlap.

SUMMARY OF THE INVENTION

The purpose of the technical solution of the present invention is to provide a data transmission method, a base station and a terminal, which are used to avoid overlapping of PUCCH resources corresponding to HARQ-ACKs corresponding to different TRPs fed back by the UE in the same slot.

An embodiment of the present invention provides a data transmission method, which is applied to a first base station, wherein the method includes:

The configuration information of the first physical uplink control channel PUCCH resource set of a terminal is sent to the second base station.

Optionally, the data transmission method, wherein the method further comprises:

sending the configuration information of the first resource subset and/or the configuration information of the second resource subset to the second base station;

Wherein, the PUCCH resources included in the first resource subset and the PUCCH resources included in the second resource subset belong to the first PUCCH resource set, and the first resource subset and the second resource subset belong to the first PUCCH resource set. The intersection between resource subsets is empty.

Optionally, the data transmission method, wherein the method further comprises:

acquiring resource confirmation information sent by the second base station;

According to the resource confirmation information, it is determined to interact with the second base station to determine that the first resource subset is used for PUCCH information transmission between the first base station and the terminal, and the second resource subset is used for PUCCH information transmission between the second base station and the terminal.

Optionally, the data transmission method, wherein the method further comprises:

sending configuration information of the second PUCCH resource set to the terminal;

Wherein, the second PUCCH resource set is the same as the first PUCCH resource set, or the second PUCCH resource set is the same as the first resource subset.

Optionally, the data transmission method, wherein the method further comprises: sending downlink control information DCI to the terminal;

The PUCCH resource indication information in the DCI indicates the PUCCH resource in the second PUCCH resource set.

Optionally, in the data transmission method, the configuration information of the first PUCCH resource set of the terminal is sent to the second base station through an Xn interface.

The present invention also provides a data transmission method according to another embodiment, which is applied to the first base station, wherein the method includes:

sending configuration information of a first physical uplink control channel PUCCH resource set of a terminal to a second base station;

sending downlink control information DCI to the terminal;

The PUCCH resource indication information in the DCI indicates the PUCCH resources in the first resource subset; wherein the PUCCH resources included in the first resource subset belong to the first PUCCH resource set.

An embodiment of the present invention further provides a data transmission method of another embodiment, which is applied to a terminal, wherein the method includes:

Obtain the first downlink control information DCI sent by the first base station, wherein the physical uplink control channel PUCCH resource indication information in the first DCI indicates the PUCCH resources in the first resource subset, and the first resource subset belongs to Part of the resources in the first physical uplink control channel PUCCH resource set preconfigured for the terminal.

Optionally, the data transmission method, wherein the method further comprises:

acquiring the configuration information of the second PUCCH resource set sent by the first base station;

Wherein, the second PUCCH resource set is the same as the first PUCCH resource set, or the second PUCCH resource set is the same as the first resource subset.

Optionally, the data transmission method, wherein the method further comprises:

Using the PUCCH resources in the first resource subset indicated by the PUCCH resource indication information, perform the HARQ-ACK feedback of the HARQ-ACK of the PDSCH corresponding to the first DCI to the first base station .

Optionally, the data transmission method, wherein the method further comprises:

Obtain the second DCI sent by the second base station, where the PUCCH resource indication information in the second DCI indicates PUCCH resources in a second resource subset, and the second resource subset belongs to some resources in the first PUCCH resource set , and the intersection between the first resource subset and the second resource subset is empty.

Optionally, the data transmission method, wherein the method further comprises:

When it is determined according to the first DCI and the second DCI that the HARQ-ACK of the PDSCH corresponding to the first DCI and the HARQ-ACK of the PDSCH corresponding to the second DCI need to be fed back in the same time slot feedback, but when the current power of the terminal meets the preset limited condition, determine the target base station that preferentially performs HARQ-ACK feedback in the first base station and the second base station;

Feedback of HARQ-ACK to the target base station.

Optionally, in the data transmission method, after the HARQ-ACK feedback is performed to the target base station, the method further includes:

If the current power of the terminal satisfies the feedback of the HARQ-ACK to another base station other than the target base station in the first base station and the second base station, the feedback of the HARQ-ACK of the other base station is performed.

Optionally, in the data transmission method, at least one of the following rules is used to determine the target base station that preferentially performs HARQ-ACK feedback in the first base station and the second base station:

Selecting a base station that is a serving cell of the terminal among the first base station and the second base station as the target base station;

In the first base station and the second base station, the base station whose current power of the terminal can perform HARQ-ACK feedback independently is selected as the target base station.

An embodiment of the present invention further provides a base station, where the base station is a first base station and includes a processor and a transceiver, wherein the transceiver is used for:

The configuration information of the first physical uplink control channel PUCCH resource set of a terminal is sent to the second base station.

Optionally, the base station, wherein the transceiver is further used for:

sending the configuration information of the first resource subset and/or the configuration information of the second resource subset to the second base station;

Wherein, the PUCCH resources included in the first resource subset and the PUCCH resources included in the second resource subset belong to the first PUCCH resource set, and the first resource subset and the second resource subset belong to the first PUCCH resource set. The intersection between resource subsets is empty.

Optionally, the base station, wherein the processor is used for:

acquiring resource confirmation information sent by the second base station;

According to the resource confirmation information, it is determined to interact with the second base station to determine that the first resource subset is used for PUCCH information transmission between the first base station and the terminal, and the second resource subset is used for PUCCH information transmission between the second base station and the terminal.

Optionally, the base station, wherein the transceiver is further used for:

sending configuration information of the second PUCCH resource set to the terminal;

Wherein, the second PUCCH resource set is the same as the first PUCCH resource set, or the second PUCCH resource set is the same as the first resource subset.

Optionally, the base station, wherein the transceiver is further used for:

sending downlink control information DCI to the terminal;

The PUCCH resource indication information in the DCI indicates the PUCCH resource in the second PUCCH resource set.

Optionally, in the base station, the transceiver sends the configuration information of the first PUCCH resource set of the terminal to the second base station through an Xn interface.

An embodiment of the present invention further provides a base station, where the base station is a first base station and includes a processor and a transceiver, wherein the transceiver is used for:

sending configuration information of a first physical uplink control channel PUCCH resource set of a terminal to a second base station;

sending downlink control information DCI to the terminal;

The PUCCH resource indication information in the DCI indicates the PUCCH resources in the first resource subset; wherein the PUCCH resources included in the first resource subset belong to the first PUCCH resource set.

An embodiment of the present invention further provides a terminal, including a processor and a transceiver, wherein the transceiver is used for:

Obtain the first downlink control information DCI sent by the first base station, wherein the physical uplink control channel PUCCH resource indication information in the first DCI indicates the PUCCH resources in the first resource subset, and the first resource subset belongs to Part of the resources in the first physical uplink control channel PUCCH resource set preconfigured for the terminal.

Optionally, the terminal, wherein the transceiver is further used for:

acquiring the configuration information of the second PUCCH resource set sent by the first base station;

Wherein, the second PUCCH resource set is the same as the first PUCCH resource set, or the second PUCCH resource set is the same as the first resource subset.

Optionally, the terminal, wherein the transceiver is further used for:

Using the PUCCH resources in the first resource subset indicated by the PUCCH resource indication information, perform the HARQ-ACK feedback of the HARQ-ACK of the PDSCH corresponding to the first DCI to the first base station .

Optionally, the terminal, wherein the transceiver is further used for:

Obtain the second DCI sent by the second base station, where the PUCCH resource indication information in the second DCI indicates PUCCH resources in a second resource subset, and the second resource subset belongs to some resources in the first PUCCH resource set , and the intersection between the first resource subset and the second resource subset is empty.

Optionally, the terminal, wherein the processor is used for:

When it is determined according to the first DCI and the second DCI that the HARQ-ACK of the PDSCH corresponding to the first DCI and the HARQ-ACK of the PDSCH corresponding to the second DCI need to be fed back in the same time slot feedback, but when the current power of the terminal meets the preset limited condition, determine the target base station that preferentially performs HARQ-ACK feedback in the first base station and the second base station;

Feedback of HARQ-ACK to the target base station.

Optionally, in the terminal, after the HARQ-ACK is fed back to the target base station, the processor is further configured to:

If the current power of the terminal satisfies the feedback of the HARQ-ACK to another base station other than the target base station in the first base station and the second base station, the feedback of the HARQ-ACK of the other base station is performed.

Optionally, the terminal, wherein the processor adopts at least one of the following rules to determine the target base station that preferentially performs HARQ-ACK feedback in the first base station and the second base station:

Selecting a base station that is a serving cell of the terminal among the first base station and the second base station as the target base station;

In the first base station and the second base station, the base station whose current power of the terminal can perform HARQ-ACK feedback independently is selected as the target base station.

An embodiment of the present invention further provides a base station, including a memory, a processor, and a computer program stored on the memory and running on the processor; wherein, when the processor executes the program, any one of the above-mentioned programs is implemented The data transmission method described in the item.

An embodiment of the present invention also provides a terminal, including a memory, a processor, and a computer program stored on the memory and running on the processor; it is characterized in that, when the processor executes the program, the following The data transmission method described in any one of the above.

Embodiments of the present invention further provide a computer-readable storage medium on which a computer program is stored, characterized in that, when the program is executed by a processor, the steps in any of the data scheduling methods described above are implemented.

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

In the data transmission method according to the embodiment of the present invention, the PUCCH resources are exchanged between at least two base stations connected to the terminal, so that the base stations respectively determine the PUCCH resources corresponding to the terminals for PUCCH information transmission with different base stations, so as to prevent the terminals from being in the same When the time slots correspond to different base stations for HARQ-ACK feedback, the used PUCCH resources overlap.

Description of drawings

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

FIG. 2 is a schematic flowchart of the data transmission method according to the first embodiment of the embodiment of the present invention;

3 is a schematic flowchart of a data transmission method according to a second embodiment of an embodiment of the present invention;

FIG. 4 is a schematic flowchart of a data transmission method according to a third embodiment of an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of the base station according to the first embodiment of the embodiment of the present invention;

FIG. 6 is a schematic structural diagram of the base station according to the second embodiment of the embodiment of the present invention;

FIG. 7 is a schematic structural diagram of the terminal according to the first embodiment of the embodiment of the present invention;

FIG. 8 is a schematic structural diagram of the base station according to the third embodiment of the embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a base station according to a fourth embodiment of an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a terminal according to the second implementation manner of an embodiment of the present invention.

Detailed ways

In order to make the technical problems, technical solutions and advantages to be solved by the present invention more clear, the following will be described in detail with reference to the accompanying drawings and specific embodiments.

The data transmission method described in the embodiment of the present invention is applied to a wireless communication system, and the wireless communication system may be a 5G system, an evolved long term evolution (evolved long term evolution, eLTE) system, or a subsequent evolution communication system. Referring to FIG. 1 , it is a schematic structural diagram of a wireless communication system according to an embodiment of the present invention. In the embodiment of the present invention, the wireless communication system may be formed as a Massive MIMO (Multiple-Input Multiple-Output) system, and supports Multi-TRP incoherent joint transmission. Specifically, a cell is jointly covered by a plurality of TRPs 10, and the terminal 20 is connected to each TRP 10. In practical applications, the connection between the above-mentioned various devices may be a wireless connection.

Each TRP 10 provided in this embodiment of the present invention may be a base station, and the base station may be a commonly used base station, an evolved node base station (evolved node base station, eNB), or a network-side device in a 5G system (for example, A next generation node base station (next generation node base station, gNB) or a device such as a cell.

The terminal 20 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, or a Personal Digital Assistant (PDA).

It should be noted here that the base stations mentioned in the data transmission method according to the embodiment of the present invention have no special explanation, and each base station is formed as a TRP connected to the terminal.

In order to solve the HARQ-ACK information feedback method based on Multiple PUCCH, the PUCCH resources corresponding to HARQ-ACKs corresponding to different TRPs fed back by the UE in the same slot may overlap. The PUCCH resources are exchanged between the base stations connected to the terminal, so that the base stations respectively determine the PUCCH resources corresponding to the terminal for PUCCH information transmission with different base stations, so as to avoid overlapping of the used PUCCH resources.

Specifically, as shown in FIG. 2 , an implementation manner of the data transmission method according to the embodiment of the present invention, applied to the first base station, includes:

S210: Send configuration information of a first physical uplink control channel PUCCH resource set of a terminal to the second base station.

Specifically, in step S210, the first base station sends a first PUCCH resource set configured for the terminal to the second base station, where the first PUCCH resource set may be the first base station or a network side device different from the first base station that is owned by the terminal Configuration, the network side device may be one of the base stations connected to the terminal, such as the primary serving cell of the terminal. For example, currently, the network side device in NR will configure a maximum of 4 PUCCH resource sets Resource Set for the terminal, each resource set includes {PUCCH resource set address pucch-ResourceSetId, resource list resourceList, maximum bearer minus 1 value maxPayloadMinus1}, where The first resource set contains a maximum of 32 PUCCH resources, and the other resource sets contain a maximum of 8 PUCCH resources.

By sending the configuration information of the first PUCCH resource set configured for the terminal to the second base station, the second base station can be made aware of the PUCCH resources configured by the first base station for the terminal, so that the first base station and the second base station respectively determine that the corresponding terminal is used for The PUCCH resources used for PUCCH information transmission avoid overlapping of the PUCCH resources used by the terminal.

Optionally, the configuration information of the first PUCCH resource set may include the address of the PUCCH resource set, the configuration of the PUCCH resources included in each PUCCH resource set, and the like.

In this embodiment of the present invention, optionally, the method further includes:

sending the configuration information of the first resource subset and/or the configuration information of the second resource subset to the second base station;

Wherein, the PUCCH resources included in the first resource subset and the PUCCH resources included in the second resource subset belong to the first PUCCH resource set, and the first resource subset and the second resource subset belong to the first PUCCH resource set. The intersection between resource subsets is empty.

In this embodiment of the present invention, the first resource subset is used for PUCCH information transmission between the first base station and the terminal, and the second resource subset is used for communication between the second base station and the terminal PUCCH information transmission between them.

Through resource interaction between the first base station and the second base station, it is determined that the first resource subset in the first PUCCH resource set is used for PUCCH information transmission between the first base station and the terminal, and the second resource subset in the PUCCH resources is determined. The set is used for PUCCH information transmission between the second base station and the terminal, and there is no intersection between the first resource subset and the second resource subset, so that when the first base station and the second base station send DCI to the terminal respectively, the The PUCCH resource indication information can indicate the PUCCH resources in the first resource subset and the second resource subset respectively, so as to ensure that the terminal uses PUCCH resources to avoid using PUCCH resources when the same slot corresponds to different base stations for HARQ-ACK feedback Resources overlap.

Further, in the data transmission method according to the embodiment of the present invention, after sending the configuration information of the first resource subset and/or the configuration information of the second resource subset to the second base station, the method further includes:

acquiring resource confirmation information sent by the second base station;

According to the resource confirmation information, it is determined to interact with the second base station to determine that the first resource subset is used for PUCCH information transmission between the first base station and the terminal, and the second resource subset is used for PUCCH information transmission between the second base station and the terminal.

The above-mentioned process that the first base station sends the configuration information of the first resource subset and/or the configuration information of the second resource subset to the second base station, and the second base station sends the resource confirmation information to the first base station, may be the first base station and the first base station. A process of interactively confirming the first resource subset and the second resource subset between the second base stations.

Optionally, the first base station may send the configuration information of the first resource subset and the configuration information of the second resource subset to the second base station at the same time, and the second base station may send the first base station to determine the first resource subset and the second base station. Resource confirmation information of a second resource subset, determining that the first resource subset is used for PUCCH information transmission between the first base station and the terminal, and the second resource subset is used for the second base station PUCCH information transmission with the terminal.

Based on this method, the first base station determines, according to the PUCCH resource set configured by the network side device for the terminal, the first resource subset that can be used for PUCCH information transmission between the terminal and the first base station, and the first resource subset that can be used for the terminal and the second The second resource subset of PUCCH information transmission between base stations sends resource exchange information to the second base station, and after obtaining the resource confirmation information sent by the second base station, that is, after confirming that the above-mentioned resource allocation can be received, the first resource is determined The subset is used for PUCCH information transmission between the first base station and the terminal, and the second resource subset is used for PUCCH information transmission between the second base station and the terminal.

Optionally, the first base station may send only the configuration information of the first resource subset to the second base station. In this way, the first base station obtains the resource confirmation information sent by the second base station, and the resource confirmation information includes the second resource subset. set configuration information. According to the resource confirmation information sent by the second base station, determine that the first resource subset is used for PUCCH information transmission between the first base station and the terminal, and the second resource subset is used for the second base station PUCCH information transmission with the terminal.

Based on the foregoing manner, the first base station may determine the first resource subset used for PUCCH information transmission between the first base station and the terminal, and the second base station may determine the first resource subset used for PUCCH information transmission between the second base station and the terminal The second resource subset, after both parties negotiate and confirm, determine that the first resource subset is used for PUCCH information transmission between the first base station and the terminal, and the second resource subset is used for PUCCH information transmission between the second base station and the terminal .

Optionally, the first base station may also send only the configuration information of the second resource subset to the second base station. In this manner, the first base station sends to the second base station the PUCCH resources that are recommended for PUCCH information transmission between the second base station and the terminal. ; Further, the first base station obtains the resource confirmation information sent by the second base station, and the resource confirmation information may include the confirmation message for the second resource subset, and may also include the configuration information of the first resource subset, which is used to suggest PUCCH resources for PUCCH information transmission between the first base station and the terminal. In this manner, the first resource subset can be determined to be used for PUCCH information transmission between the first base station and the terminal according to the resource confirmation information sent by the second base station, and the second resource subset is used to transmit the PUCCH information between the first base station and the terminal. PUCCH information transmission between the second base station and the terminal.

Based on the above manner, the first base station may determine the second resource subset used for the PUCCH information transmission between the second base station and the terminal, and the second base station may determine the second resource subset used for the PUCCH information transmission between the first base station and the terminal The first resource subset, after both parties negotiate and confirm, determine that the first resource subset is used for PUCCH information transmission between the first base station and the terminal, and the second resource subset is used for PUCCH information transmission between the second base station and the terminal .

It can be understood that the above-mentioned process of performing resource interaction between the first base station and the second base station, and determining the first resource subset and the second resource subset is only an example, and is not specifically limited thereto.

Optionally, the data transmission method according to the embodiment of the present invention further includes:

sending configuration information of the second PUCCH resource set to the terminal;

Wherein, the second PUCCH resource set is the same as the first PUCCH resource set, or the second PUCCH resource set is the same as the first resource subset.

In the data transmission method according to the embodiment of the present invention, configuration information of the second PUCCH resource set is sent to the terminal, and the second PUCCH resource set is used to configure the first PUCCH resource set or the first resource subset for the terminal for the first PUCCH resource set. PUCCH information transmission between a base station and a terminal.

Optionally, using the data transmission method according to the embodiment of the present invention further includes: sending downlink control information DCI to the terminal;

The PUCCH resource indication information in the DCI indicates the PUCCH resource in the second PUCCH resource set.

Specifically, since the second PUCCH resource set is the same as the first PUCCH resource set, or is the same as the first resource subset, the PUCCH resource indication information in the DCI sent to the terminal may indicate the PUCCH resources in the first PUCCH resource set , or indicating the PUCCH resource in the first resource subset.

It should be noted that, in the data transmission method described in the embodiment of the present invention, the above TRPs connected to the terminal respectively include the first base station and the second base station as an example, and perform resource interaction between the first base station and the second base station to determine the respective The PUCCH resource applied to the PUCCH information transmission between the terminal and the terminal is described as an example. It can be understood that when the number of TRPs is more than two, one of the TRPs can be used for each TRP connected to the terminal. Interaction is performed to determine the PUCCH resources corresponding to the PUCCH information transmission between each TRP and the terminal, so that the intersection between the determined subsets of PUCCH resources corresponding to each TRP is empty, that is, there is no intersection with each other.

Optionally, in this embodiment of the present invention, in step S210, when the configuration information of the first PUCCH resource set of the terminal is sent to the second base station, an Xn interface may be used.

Of course, the resource interaction between the first base station and the second base station is not limited to being only possible through the Xn interface. In the data transmission method according to the embodiment of the present invention, the above-mentioned manner of determining the first resource subset and the second resource subset between the first base station and the second base station can be illustrated as follows:

Example 1

Multi-TRP joint downlink transmission is performed between the first base station and the second base station and the UE, the first base station is the Serving Cell of the UE, and the network side equipment sends the PUCCH configuration information for the UE, that is, it is determined as the terminal configuration The PUCCH resource (the first PUCCH resource set), the configured PUCCH resources include:

4 PUCCH Resource Sets {PUCCH Resource Set 0, PUCCH Resource Set 1, PUCCH Resource Set 2, PUCCH Resource Set 3};

Among them, PUCCH Resource Set 0 includes 32 PUCCH Resource {PUCCH Resource 0-0～PUCCH Resource 0-31};

PUCCH Resource Set 1 includes 8 PUCCH Resource {PUCCH Resource 1-0～PUCCHResource 1-7};

PUCCH Resource Set 2 includes 8 PUCCH Resource {PUCCH Resource 2-0～PUCCHResource 2-7};

PUCCH Resource Set 3 includes 8 PUCCH Resource {PUCCH Resource 3-0～PUCCHResource 3-7};

The resource configuration information of the PUCCH resource is exchanged between the first base station and the second base station through Xn, and the following exchange information is determined:

The first resource subset of the above PUCCH resources is used for PUCCH information transmission between the first base station and the UE, and the first resource subset includes:

16 PUCCH Resources included in PUCCH Resource Set 0 {PUCCH Resource 0-0～PUCCH Resource 0-15};

4 PUCCH Resources included in PUCCH Resource Set 1 {PUCCH Resource 1-0～PUCCHResource 1-3};

4 PUCCH Resources included in PUCCH Resource Set 2 {PUCCH Resource 2-0～PUCCHResource 2-3};

4 PUCCH Resources included in PUCCH Resource Set 3 {PUCCH Resource 3-0～PUCCHResource 3-3};

The second resource subset of the above PUCCH resources is used for PUCCH information transmission between the second base station and the UE, and the second resource subset includes:

16 PUCCH Resources included in PUCCH Resource Set 0 {PUCCH Resource0-16～PUCCH Resource 0-31};

4 PUCCH Resources included in PUCCH Resource Set 1 {PUCCH Resource 1-4～PUCCHResource 1-7};

4 PUCCH Resources included in PUCCH Resource Set 2 {PUCCH Resource 2-4～PUCCHResource 2-7};

Four PUCCH Resources {PUCCH Resource 3-4 to PUCCH Resource 3-7} included in PUCCH Resource Set 3.

Embodiment 2

Multi-TRP joint downlink transmission is performed between the first base station and the second base station and the UE. The first base station is the Serving Cell of the UE, and the network side equipment sends the PUCCH configuration information for the UE, that is, the PUCCH configured for the terminal is determined. resource (the first PUCCH resource set), the configured PUCCH resources include:

8 PUCCH Resource Sets {PUCCH Resource Set 0, PUCCH Resource Set 1, PUCCH Resource Set 2, PUCCH Resource Set 3, PUCCH Resource Set 4, PUCCH Resource Set 5, PUCCH Resource Set 6, PUCCH Resource Set 7};

Among them, PUCCH Resource Set 0 includes 32 PUCCH Resource {PUCCH Resource 0-0～PUCCH Resource 0-31};

PUCCH Resource Set 1 includes 8 PUCCH Resource {PUCCH Resource 1-0～PUCCHResource 1-7};

PUCCH Resource Set 2 includes 8 PUCCH Resource {PUCCH Resource 2-0～PUCCHResource 2-7};

PUCCH Resource Set 3 includes 8 PUCCH Resource {PUCCH Resource 3-0～PUCCHResource 3-7};

PUCCH Resource Set 4 includes 32 PUCCH Resource {PUCCH Resource 4-0～PUCCHResource 4-31};

PUCCH Resource Set 5 includes 8 PUCCH Resource {PUCCH Resource 5-0～PUCCHResource 5-7};

PUCCH Resource Set 6 includes 8 PUCCH Resource {PUCCH Resource 6-0～PUCCHResource 6-7};

PUCCH Resource Set 7 includes 8 PUCCH Resource {PUCCH Resource 7-0～PUCCHResource 7-7};

The resource configuration information of the above PUCCH resources is exchanged between the first base station and the second base station through Xn, and the following exchange information is determined:

The first resource subset of the above PUCCH resources is used for PUCCH information transmission between the first base station and the UE, and the first resource subset includes:

PUCCH Resource Set 0, PUCCH Resource Set 1, PUCCH Resource Set 2, PUCCH Resource Set 3;

The second resource subset of the above PUCCH resources is used for PUCCH information transmission between the second base station and the UE, and the second resource subset includes:

PUCCH Resource Set 4, PUCCH Resource Set 5, PUCCH Resource Set 6, PUCCH Resource Set 7.

It can be understood that the PUCCH resources determined by the first resource subset and the second resource subset are only for illustration, and are not specifically limited thereto.

In addition, it should be noted that, in the data transmission method according to the embodiment of the present invention, the mentioned first base station may be any base station among multiple base stations capable of performing Multi-TRP joint downlink transmission with the UE.

In the embodiment of the present invention, downlink control information DCI is sent to the terminal, optionally, the PUCCH resource indication information in the DCI indicates the PUCCH resource in the first resource subset.

Specifically, the PUCCH resource indication information in the DCI sent to the terminal may indicate one of the PUCCH resources in the PUCCH resources included in the first resource subset, so that the terminal can use the PUCCH resources indicated by the DCI to perform this information to the first base station. The HARQ-ACK feedback is acknowledged by the hybrid automatic repeat request of the physical downlink shared channel PDSCH scheduled by the DCI.

Using the data transmission method according to the embodiment of the present invention, when the first base station and the second base station send DCI to the terminal respectively, the PUCCH resources indicated by the PUCCH resource indication information in the DCI will not overlap, ensuring that the terminal uses the PUCCH resources, When the same slot corresponds to different base stations for HARQ-ACK feedback, overlapping of the used PUCCH resources is avoided.

Another implementation manner of the data transmission method according to the embodiment of the present invention is applied to the first base station. As shown in FIG. 3 , the method includes:

S310, sending configuration information of a first physical uplink control channel PUCCH resource set of a terminal to a second base station;

S320, sending downlink control information DCI to the terminal;

The PUCCH resource indication information in the DCI indicates the PUCCH resources in the first resource subset; wherein the PUCCH resources included in the first resource subset belong to the first PUCCH resource set.

Using the above process, different base stations can determine the PUCCH resources respectively by performing PUCCH resource interaction between the base stations connected to the terminal; further, by making the PUCCH resource indication information in the DCI sent to the terminal to indicate the first resource subset The PUCCH resources avoid overlapping of the PUCCH resources used when the terminal performs HARQ-ACK feedback to the first base station and when the terminal performs HARQ-ACK feedback to other base stations.

Optionally, after step S310, the method further includes:

sending the configuration information of the first resource subset and/or the configuration information of the second resource subset to the second base station;

Wherein, the PUCCH resources included in the first resource subset and the PUCCH resources included in the second resource subset belong to the first PUCCH resource set, and the first resource subset and the second resource subset belong to the first PUCCH resource set. The intersection between resource subsets is empty.

Optionally, the method further includes:

acquiring resource confirmation information sent by the second base station;

According to the resource confirmation information, it is determined to interact with the second base station to determine that the first resource subset is used for PUCCH information transmission between the first base station and the terminal, and the second resource subset is used for PUCCH information transmission between the second base station and the terminal.

Optionally, the method further includes:

sending configuration information of the second PUCCH resource set to the terminal;

Wherein, the second PUCCH resource set is the same as the first PUCCH resource set, or the second PUCCH resource set is the same as the first resource subset.

An embodiment of the present invention further provides a data transmission method of another embodiment, which is applied to a terminal. As shown in FIG. 4 , the method includes:

S410: Acquire first downlink control information DCI sent by the first base station, where the physical uplink control channel PUCCH resource indication information in the first DCI indicates PUCCH resources in a first resource subset, and the first resource subset The set belongs to part of the resources in the first physical uplink control channel PUCCH resource set preconfigured for the terminal.

Optionally, the method further includes:

acquiring the configuration information of the second PUCCH resource set sent by the first base station;

Wherein, the second PUCCH resource set is the same as the first PUCCH resource set, or the second PUCCH resource set is the same as the first resource subset.

Optionally, the method further includes:

Using the PUCCH resources in the first resource subset indicated by the PUCCH resource indication information, perform the HARQ-ACK feedback to the first base station for the HARQ-ACK HARQ-ACK of the physical downlink shared channel PDSCH scheduled by the first DCI. .

Based on the data transmission method according to the embodiment of the present invention, in one embodiment, after acquiring the first DCI sent by the first base station, the terminal performs the first DCI according to the PUCCH resource indicated by the PUCCH resource indication information in the first DCI. The HARQ-ACK feedback is acknowledged by the Hybrid Automatic Repeat Request for the scheduled PDSCH.

Optionally, in another implementation manner of the data transmission method according to the embodiment of the present invention, the method further includes:

Obtain the second DCI sent by the second base station, where the PUCCH resource indication information in the second DCI indicates PUCCH resources in a second resource subset, and the second resource subset belongs to some resources in the first PUCCH resource set , and the intersection between the first resource subset and the second resource subset is empty.

In the data transmission method according to the embodiment of the present invention, for multiple base stations capable of performing Multi-TRP joint downlink transmission with the UE, the corresponding PUCCH resources indicated in the DCI and used for PUCCH information transmission are different in the frequency domain. There is an intersection, so it can be ensured that when the terminal uses PUCCH resources, when the same slot corresponds to different base stations for HARQ-ACK feedback, overlapping of the used PUCCH resources can be avoided.

Optionally, in this embodiment of the present invention, the method further includes:

When it is determined according to the first DCI and the second DCI that the HARQ-ACK of the PDSCH corresponding to the first DCI and the HARQ-ACK of the PDSCH corresponding to the second DCI need to be fed back in the same time slot feedback, but when the current power of the terminal meets the preset limited condition, determine the target base station that preferentially performs HARQ-ACK feedback in the first base station and the second base station;

Feedback of HARQ-ACK to the target base station.

Optionally, using the data transmission method according to the embodiment of the present invention, after the HARQ-ACK is fed back to the target base station, the method further includes:

If the current power of the terminal satisfies the feedback of the HARQ-ACK to another base station other than the target base station in the first base station and the second base station, the feedback of the HARQ-ACK of the other base station is performed.

Specifically, at least one of the following rules is used to determine the target base station that preferentially performs HARQ-ACK feedback among the first base station and the second base station:

Selecting a base station that is a serving cell of the terminal among the first base station and the second base station as the target base station;

In the first base station and the second base station, the base station whose current power of the terminal can perform HARQ-ACK feedback independently is selected as the target base station.

Using the data transmission method according to the embodiment of the present invention, the resource interaction between the first base station and the second base station is used, so that the PUCCH resources used by the terminal to perform HARQ-ACK feedback to different TRPs in Multi-TRP transmission are set in the frequency domain Resources do not overlap. In this way, even when data transmission is actually performed, the PUCCHs corresponding to HARQ-ACKs corresponding to multiple PDSCHs from different TRPs need to be sent in the same uplink time slot, resulting in the transmission of these multiple PUCCHs in the time domain. But no overlap occurs in the frequency domain.

Further, when the current power of the terminal is sufficient, the HARQ-ACK feedback corresponding to different TRPs can be sent on the same uplink time slot, and there is no need to abandon the transmission of any PUCCH information; when the current power of the terminal is limited, the corresponding different TRPs are not satisfied. When the HARQ-ACK feedback of TRP is sent on the same uplink time slot, using the data transmission method described in the embodiment of the present invention, it is necessary to further consider the priority of PUCCH information transmission of different TRPs, and determine the target base station for HARQ-ACK feedback preferentially.

Specifically, one of the rules for determining the target base station that preferentially performs HARQ-ACK feedback in the first base station and the second base station may be: selecting the first base station and the second base station for the terminal. The base station of the serving cell is the target base station, that is, the target base station may be determined by the serving cells in the first base station and the second base station:

For example: if the first base station is the Serving Cell of the UE, the priority of PUCCH information transmission of the first base station is higher than the priority of PUCCH information transmission of the second base station;

Based on this rule, the HARQ-ACK feedback of the first base station may be performed first. Optionally, after the HARQ-ACK feedback of the first base station is performed, the current remaining power of the terminal may be used for the HARQ-ACK feedback of the second base station.

If the second base station is the Serving Cell of the UE, the priority of PUCCH information transmission of the second base station is higher than the priority of PUCCH information transmission of the first base station;

Based on this rule, the HARQ-ACK feedback of the second base station may be performed first. Optionally, after the HARQ-ACK feedback of the second base station is performed, the current remaining power of the terminal may be used for the HARQ-ACK feedback of the first base station.

In another implementation manner, another rule for determining the target base station that preferentially performs HARQ-ACK feedback among the first base station and the second base station may be: The base station whose current power of the terminal can independently perform HARQ-ACK feedback is the target base station, that is, the target base station can be determined according to the PUCCH information of which base station the current power of the terminal can satisfy independently.

For example: if the current power of the terminal can meet the requirements for sending the PUCCH information of the first base station alone, but cannot meet the requirements for sending the PUCCH information of the second base station alone, the priority of sending the PUCCH information of the first base station is higher than that of the PUCCH of the second base station. The priority of sending messages.

Based on this rule, the HARQ-ACK feedback of the first base station may be performed first. Optionally, after the HARQ-ACK feedback of the first base station is performed, the current remaining power of the terminal may be used for the HARQ-ACK feedback of the second base station.

If the current power of the terminal can meet the requirements for sending the PUCCH information of the second base station alone, but cannot meet the requirements for sending the PUCCH information of the first base station alone, the priority of sending the PUCCH information of the second base station is higher than that of the first base station. priority.

Based on this rule, the HARQ-ACK feedback of the second base station may be performed first. Optionally, after the HARQ-ACK feedback of the second base station is performed, the current remaining power of the terminal may be used for the HARQ-ACK feedback of the first base station.

Using the data transmission method according to the embodiment of the present invention, based on the resource interaction between the first base station and the second base station, the first resource subset in the PUCCH resources is determined to be used for PUCCH information transmission between the first base station and the terminal. The second resource subset in the PUCCH resources is used for PUCCH information transmission between the second base station and the terminal, and there is no intersection between the first resource subset and the second resource subset, so that the first base station and the second base station are respectively When sending DCI to the terminal, the PUCCH resources indicated by the PUCCH resource indication information in the DCI will not overlap, ensuring that the terminal uses PUCCH resources and avoids the PUCCH used when the same slot corresponds to different base stations for HARQ-ACK feedback Resources overlap. Further, when the current power of the terminal is limited and the HARQ-ACK feedback corresponding to multiple TRPs cannot be sent on the same uplink time slot, the target base station that prioritizes HARQ-ACK feedback is determined by considering the priority of PUCCH information transmission of different TRPs. , to preferentially guarantee the PUCCH information of the TRP with higher priority.

Another aspect of an embodiment of the present invention further provides a base station, where the base station is a first base station. As shown in FIG. 5 , the base station 500 includes a processor 510 and a transceiver 520, where the transceiver 520 is configured to:

The configuration information of the first physical uplink control channel PUCCH resource set of a terminal is sent to the second base station.

Optionally, the transceiver 520 is also used for:

sending the configuration information of the first resource subset and/or the configuration information of the second resource subset to the second base station;

Wherein, the PUCCH resources included in the first resource subset and the PUCCH resources included in the second resource subset belong to the first PUCCH resource set, and the first resource subset and the second resource subset belong to the first PUCCH resource set. The intersection between resource subsets is empty.

Optionally, the base station is characterized in that the processor 510 is configured to:

acquiring resource confirmation information sent by the second base station;

According to the resource confirmation information, it is determined to interact with the second base station to determine that the first resource subset is used for PUCCH information transmission between the first base station and the terminal, and the second resource subset is used for PUCCH information transmission between the second base station and the terminal.

Optionally, the transceiver 520 is also used for:

sending configuration information of the second PUCCH resource set to the terminal;

Wherein, the second PUCCH resource set is the same as the first PUCCH resource set, or the second PUCCH resource set is the same as the first resource subset.

Optionally, the transceiver 520 is also used for:

sending downlink control information DCI to the terminal;

The PUCCH resource indication information in the DCI indicates the PUCCH resource in the second PUCCH resource set.

Optionally, the transceiver 520 sends the configuration information of the first PUCCH resource set of the terminal to the second base station through the Xn interface.

Another aspect of the embodiments of the present invention further provides another base station, where the base station is a first base station. As shown in FIG. 6 , the base station 600 includes a processor 610 and a transceiver 620, where the transceiver 520 is used for:

sending configuration information of a first physical uplink control channel PUCCH resource set of a terminal to a second base station;

sending downlink control information DCI to the terminal;

The PUCCH resource indication information in the DCI indicates the PUCCH resources in the first resource subset; wherein the PUCCH resources included in the first resource subset belong to the first PUCCH resource set.

An embodiment of the present invention further provides a terminal. As shown in FIG. 7 , the terminal 700 includes a processor 710 and a transceiver 720, wherein the transceiver 720 is used for:

Obtain the first downlink control information DCI sent by the first base station, wherein the physical uplink control channel PUCCH resource indication information in the first DCI indicates the PUCCH resources in the first resource subset, and the first resource subset belongs to Part of the resources in the first physical uplink control channel PUCCH resource set preconfigured for the terminal.

Optionally, the transceiver 720 is also used for:

acquiring the configuration information of the second PUCCH resource set sent by the first base station;

Wherein, the second PUCCH resource set is the same as the first PUCCH resource set, or the second PUCCH resource set is the same as the first resource subset.

Optionally, the transceiver 720 is also used for:

Using the PUCCH resources in the first resource subset indicated by the PUCCH resource indication information, perform the HARQ-ACK feedback of the HARQ-ACK of the PDSCH corresponding to the first DCI to the first base station .

Optionally, the transceiver 720 is also used for:

Obtain the second DCI sent by the second base station, where the PUCCH resource indication information in the second DCI indicates PUCCH resources in a second resource subset, and the second resource subset belongs to some resources in the first PUCCH resource set , and the intersection between the first resource subset and the second resource subset is empty.

Optionally, the processor 710 is configured to:

When it is determined according to the first DCI and the second DCI that the HARQ-ACK of the PDSCH corresponding to the first DCI and the HARQ-ACK of the PDSCH corresponding to the second DCI need to be fed back in the same time slot feedback, but when the current power of the terminal meets the preset limited condition, determine the target base station that preferentially performs HARQ-ACK feedback in the first base station and the second base station;

Feedback of the HARQ-ACK to the target base station.

Optionally, after the HARQ-ACK is fed back to the target base station, the processor 710 is further configured to:

If the current power of the terminal satisfies the feedback of the HARQ-ACK to another base station other than the target base station in the first base station and the second base station, the feedback of the HARQ-ACK of the other base station is performed.

Optionally, the processor 710 adopts at least one of the following rules to determine the target base station that preferentially performs HARQ-ACK feedback among the first base station and the second base station:

Selecting a base station that is a serving cell of the terminal among the first base station and the second base station as the target base station;

In the first base station and the second base station, the base station whose current power of the terminal can perform HARQ-ACK feedback independently is selected as the target base station.

An embodiment of the present invention further provides a base station, where the base station is a first base station. As shown in FIG. 8 , the base station includes a memory 810 , a processor 820 , and the base station is stored on the memory 810 and can run on the processor 820 . computer program. As shown in FIG. 8 , the base station also includes a transceiver 830 and a bus interface 840 .

Wherein, the processor 820 is used for reading the program in the memory 810;

The transceiver 830 is used to receive and transmit data under the control of the processor.

Additionally, bus interface 840 may include any number of interconnected buses and bridges, in particular one or more processors, represented by processor 820, and various circuits of memory, represented by memory, linked together. The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein. The bus interface provides the interface. Transceiver 830 may be multiple elements, including transmitters and transceivers, that provide a means for communicating with various other devices over a transmission medium. The processor 820 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 820 is used for:

The configuration information of the first physical uplink control channel PUCCH resource set of a terminal is sent to the second base station.

Optionally, the processor 820 is further configured to:

sending the configuration information of the first resource subset and/or the configuration information of the second resource subset to the second base station;

Wherein, the PUCCH resources included in the first resource subset and the PUCCH resources included in the second resource subset belong to the first PUCCH resource set, and the first resource subset and the second resource subset belong to the first PUCCH resource set. The intersection between resource subsets is empty.

Optionally, the processor 820 is further configured to:

acquiring resource confirmation information sent by the second base station;

According to the resource confirmation information, it is determined to interact with the second base station to determine that the first resource subset is used for PUCCH information transmission between the first base station and the terminal, and the second resource subset is used for PUCCH information transmission between the second base station and the terminal.

Optionally, the processor 820 is further configured to:

sending configuration information of the second PUCCH resource set to the terminal;

Wherein, the second PUCCH resource set is the same as the first PUCCH resource set, or the second PUCCH resource set is the same as the first resource subset.

Optionally, the processor 820 is further configured to:

sending downlink control information DCI to the terminal;

The PUCCH resource indication information in the DCI indicates the PUCCH resource in the second PUCCH resource set.

Optionally, the processor 820 sends the configuration information of the first PUCCH resource set of the terminal to the second base station through the Xn interface.

An embodiment of the present invention further provides a base station, where the base station is a first base station. As shown in FIG. 9 , the base station includes a memory 910 , a processor 920 , and the base station is stored in the memory 910 and can run on the processor 920 computer program. As shown in FIG. 9 , the base station also includes a transceiver 930 and a bus interface 940 .

Wherein, the processor 920 is used for reading the program in the memory 910;

The transceiver 930 is used to receive and transmit data under the control of the processor.

Additionally, bus interface 940 may include any number of interconnected buses and bridges, in particular one or more processors, represented by processor 920, and various circuits of memory, represented by memory, linked together. The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein. The bus interface provides the interface. Transceiver 930 may be multiple elements, ie, including transmitters and transceivers, that provide a means for communicating with various other devices over a transmission medium. The processor 920 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 920 is used for:

sending configuration information of a first physical uplink control channel PUCCH resource set of a terminal to a second base station;

sending downlink control information DCI to the terminal;

The PUCCH resource indication information in the DCI indicates the PUCCH resources in the first resource subset; wherein the PUCCH resources included in the first resource subset belong to the first PUCCH resource set.

An embodiment of the present invention further provides a terminal. As shown in FIG. 10, the terminal includes a memory 1020, a processor 1010, and a computer program stored in the memory 1020 and running on the processor 1010; in addition, the terminal also Transceiver 1030 is included.

The processor 1010 is used to read the program in the memory 1020, and specifically performs the following process:

Obtain the first downlink control information DCI sent by the first base station, wherein the physical uplink control channel PUCCH resource indication information in the first DCI indicates the PUCCH resources in the first resource subset, and the first resource subset belongs to Part of the resources in the first physical uplink control channel PUCCH resource set preconfigured for the terminal.

Optionally, the processor 1010 is further configured to:

acquiring the configuration information of the second PUCCH resource set sent by the first base station;

Wherein, the second PUCCH resource set is the same as the first PUCCH resource set, or the second PUCCH resource set is the same as the first resource subset.

Optionally, the processor 1010 is further configured to: use the PUCCH resources in the first resource subset indicated by the PUCCH resource indication information to perform the physical downlink shared channel corresponding to the first DCI to the first base station The HARQ-ACK feedback is acknowledged by the PDSCH HARQ.

Optionally, the processor 1010 is further configured to:

Obtain the second DCI sent by the second base station, where the PUCCH resource indication information in the second DCI indicates PUCCH resources in a second resource subset, and the second resource subset belongs to some resources in the first PUCCH resource set , and the intersection between the first resource subset and the second resource subset is empty.

Optionally, the processor 1010 is further configured to:

When it is determined according to the first DCI and the second DCI that the HARQ-ACK of the PDSCH corresponding to the first DCI and the HARQ-ACK of the PDSCH corresponding to the second DCI need to be fed back in the same time slot feedback, but when the current power of the terminal meets the preset limited condition, determine the target base station that preferentially performs HARQ-ACK feedback in the first base station and the second base station;

Feedback of HARQ-ACK to the target base station.

Optionally, after the HARQ-ACK is fed back to the target base station, the processor 1010 is further configured to:

If the current power of the terminal satisfies the feedback of the HARQ-ACK to another base station other than the target base station in the first base station and the second base station, the feedback of the HARQ-ACK of the other base station is performed.

Optionally, the processor 1010 adopts at least one of the following rules to determine a target base station that preferentially performs HARQ-ACK feedback among the first base station and the second base station:

Selecting a base station that is a serving cell of the terminal among the first base station and the second base station as the target base station;

In the first base station and the second base station, the base station whose current power of the terminal can perform HARQ-ACK feedback independently is selected as the target base station.

In addition, the terminal also includes a user interface 1040, which is connected to a bus interface that provides an interface. In FIG. 7 , the bus architecture may include any number of interconnected buses and bridges, in particular one or more processors represented by processor 1010 and various circuits of memory represented by memory 1020 linked together. The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein. Transceiver 1030 may be multiple elements, ie, including a transmitter and a receiver, providing a means for communicating with various other devices over a transmission medium. The processor 1010 is responsible for managing the bus architecture and general processing, and the memory 1020 may store data used by the processor in performing operations.

The processor 1010 is responsible for managing the bus architecture and general processing, and the memory 1020 may store data used by the processor in performing operations.

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

In the several embodiments provided in this application, it should be understood that the disclosed method and apparatus may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may be physically included individually, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware, or may be implemented in the form of hardware plus software functional units.

The above-mentioned integrated units implemented in the form of software functional units can be stored in a computer-readable storage medium. The above-mentioned 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, etc.) to execute part of the steps of the transceiving method described in the various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, Read-Only Memory (ROM for short), Random Access Memory (RAM for short), magnetic disk or CD, etc. that can store program codes medium.

The above are the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as It is the protection scope of the present invention.

Claims (31)

1. A data transmission method applied to a first base station, the method comprising:

and sending configuration information of a first Physical Uplink Control Channel (PUCCH) resource set of a terminal to a second base station.

2. The data transmission method of claim 1, further comprising:

transmitting configuration information of a first resource subset and/or configuration information of a second resource subset to the second base station;

wherein the PUCCH resources included in the first resource subset and the PUCCH resources included in the second resource subset both belong to the first PUCCH resource set, and an intersection between the first resource subset and the second resource subset is empty.

3. The data transmission method of claim 2, further comprising:

acquiring resource confirmation information sent by the second base station;

and according to the resource confirmation information, determining to interactively determine the first resource subset to be used for PUCCH information transmission between the first base station and the terminal with the second base station, and determining the second resource subset to be used for PUCCH information transmission between the second base station and the terminal.

4. The data transmission method of claim 2, further comprising:

transmitting configuration information of a second PUCCH resource set to the terminal;

wherein the second PUCCH resource set is the same as the first PUCCH resource set or the second PUCCH resource set is the same as the first resource subset.

5. The data transmission method of claim 4, wherein the method further comprises: sending downlink control information DCI to the terminal;

wherein the PUCCH resource indication information in the DCI indicates PUCCH resources in the second PUCCH resource set.

6. The data transmission method according to claim 1, wherein the configuration information of the first PUCCH resource set of the terminal is transmitted to the second base station through an Xn interface.

7. A data transmission method applied to a first base station, the method comprising:

sending configuration information of a first Physical Uplink Control Channel (PUCCH) resource set of a terminal to a second base station;

sending downlink control information DCI to the terminal;

wherein the PUCCH resource indication information in the DCI indicates PUCCH resources in a first subset of resources; wherein the PUCCH resources included in the first subset of resources belong to the first set of PUCCH resources.

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

acquiring first Downlink Control Information (DCI) sent by a first base station, wherein Physical Uplink Control Channel (PUCCH) resource indication information in the first DCI indicates PUCCH resources in a first resource subset, and the first resource subset belongs to partial resources in a first PUCCH resource set which is configured for a terminal in advance.

9. The data transmission method of claim 8, wherein the method further comprises:

acquiring configuration information of a second PUCCH resource set sent by the first base station;

wherein the second PUCCH resource set is the same as the first PUCCH resource set or the second PUCCH resource set is the same as the first resource subset.

10. The data transmission method of claim 8, wherein the method further comprises:

and adopting PUCCH resources in a first resource subset indicated by the PUCCH resource indication information to perform hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback of a Physical Downlink Shared Channel (PDSCH) corresponding to the first DCI to the first base station.

11. The data transmission method of claim 8, wherein the method further comprises:

acquiring second DCI sent by a second base station, wherein PUCCH resource indication information in the second DCI indicates PUCCH resources in a second resource subset, the second resource subset belongs to partial resources in the first PUCCH resource set, and an intersection between the first resource subset and the second resource subset is empty.

12. The data transmission method of claim 11, wherein the method further comprises:

when determining that HARQ-ACK feedback of a PDSCH corresponding to the first DCI and HARQ-ACK feedback of a PDSCH corresponding to the second DCI need to be performed in the same time slot according to the first DCI and the second DCI, and when the current power of the terminal meets a preset limited condition, determining a target base station which preferentially performs HARQ-ACK feedback in the first base station and the second base station;

and feeding back HARQ-ACK to the target base station.

13. The data transmission method of claim 12, wherein after the feedback of HARQ-ACK to the target base station, the method further comprises:

and if the current power of the terminal meets the HARQ-ACK feedback of another base station except the target base station in the first base station and the second base station, executing the HARQ-ACK feedback of the other base station.

14. The data transmission method according to claim 12, wherein a target base station of the first base station and the second base station for performing HARQ-ACK feedback preferentially is determined by using at least one of the following rules:

selecting a base station which is a service cell of the terminal from the first base station and the second base station as the target base station;

and selecting a base station, which can independently perform HARQ-ACK feedback on the current power of the terminal, from the first base station and the second base station as the target base station.

15. A base station, the base station being a first base station and comprising a processor and a transceiver, wherein the transceiver is configured to:

and sending configuration information of a first Physical Uplink Control Channel (PUCCH) resource set of a terminal to a second base station.

16. The base station of claim 15, wherein the transceiver is further configured to:

transmitting configuration information of a first resource subset and/or configuration information of a second resource subset to the second base station;

wherein the PUCCH resources included in the first resource subset and the PUCCH resources included in the second resource subset both belong to the first PUCCH resource set, and an intersection between the first resource subset and the second resource subset is empty.

17. The base station of claim 16, wherein the processor is configured to:

acquiring resource confirmation information sent by the second base station;

and according to the resource confirmation information, determining to interactively determine the first resource subset to be used for PUCCH information transmission between the first base station and the terminal with the second base station, and determining the second resource subset to be used for PUCCH information transmission between the second base station and the terminal.

18. The base station of claim 16, wherein the transceiver is further configured to:

transmitting configuration information of a second PUCCH resource set to the terminal;

wherein the second PUCCH resource set is the same as the first PUCCH resource set or the second PUCCH resource set is the same as the first resource subset.

19. The base station of claim 18, wherein the transceiver is further configured to:

sending downlink control information DCI to the terminal;

wherein the PUCCH resource indication information in the DCI indicates PUCCH resources in the second PUCCH resource set.

20. The base station of claim 15, wherein the transceiver sends configuration information for a first set of PUCCH resources for the terminal to the second base station over an Xn interface.

21. A base station, the base station being a first base station and comprising a processor and a transceiver, wherein the transceiver is configured to:

sending configuration information of a first Physical Uplink Control Channel (PUCCH) resource set of a terminal to a second base station;

sending downlink control information DCI to the terminal;

wherein the PUCCH resource indication information in the DCI indicates PUCCH resources in a first subset of resources; wherein the PUCCH resources included in the first subset of resources belong to the first set of PUCCH resources.

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

acquiring first Downlink Control Information (DCI) sent by a first base station, wherein Physical Uplink Control Channel (PUCCH) resource indication information in the first DCI indicates PUCCH resources in a first resource subset, and the first resource subset belongs to partial resources in a first PUCCH resource set which is configured for a terminal in advance.

23. The terminal of claim 22, wherein the transceiver is further configured to:

acquiring configuration information of a second PUCCH resource set sent by the first base station;

wherein the second PUCCH resource set is the same as the first PUCCH resource set or the second PUCCH resource set is the same as the first resource subset.

24. The terminal of claim 22, wherein the transceiver is further configured to:

and adopting PUCCH resources in a first resource subset indicated by the PUCCH resource indication information to perform hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback of a Physical Downlink Shared Channel (PDSCH) corresponding to the first DCI to the first base station.

25. The terminal of claim 22, wherein the transceiver is further configured to:

acquiring second DCI sent by a second base station, wherein PUCCH resource indication information in the second DCI indicates PUCCH resources in a second resource subset, the second resource subset belongs to partial resources in the first PUCCH resource set, and an intersection between the first resource subset and the second resource subset is empty.

26. The terminal of claim 25, wherein the processor is configured to:

when determining that HARQ-ACK feedback of a PDSCH corresponding to the first DCI and HARQ-ACK feedback of a PDSCH corresponding to the second DCI need to be performed in the same time slot according to the first DCI and the second DCI, and when the current power of the terminal meets a preset limited condition, determining a target base station which preferentially performs HARQ-ACK feedback in the first base station and the second base station;

and feeding back HARQ-ACK to the target base station.

27. The terminal of claim 26, wherein after the feedback of HARQ-ACK to the target base station, the processor is further configured to:

and if the current power of the terminal meets the HARQ-ACK feedback of another base station except the target base station in the first base station and the second base station, executing the HARQ-ACK feedback of the other base station.

28. The terminal of claim 26, wherein the processor determines a target base station of the first base station and the second base station for HARQ-ACK feedback with priority, according to at least one of the following rules:

selecting a base station which is a service cell of the terminal from the first base station and the second base station as the target base station;

and selecting a base station, which can independently perform HARQ-ACK feedback on the current power of the terminal, from the first base station and the second base station as the target base station.

29. A base station comprising a memory, a processor and a computer program stored on the memory and executable on the processor; characterized in that the processor implements the data transmission method according to any one of claims 1 to 6 when executing the program, or implements the data transmission method according to claim 7.

30. 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 8 to 14.

31. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out the steps in the data scheduling method according to any one of claims 1 to 6, or the steps in the data transmission method according to claim 7, or the steps in the data transmission method according to any one of claims 6 to 11.

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