CN118044291A - Communication method, terminal device and network device - Google Patents

Abstract

The application relates to a communication method, terminal equipment and network equipment. Relates to the field of communication. The specific implementation mode is as follows: the terminal equipment receives first downlink control information, wherein the first downlink control information is used for determining data transmission corresponding to at least two carriers. The application can realize the scheduling of the data transmission of two or more carriers by using one piece of downlink control information.

Description

Communication method, terminal device and network device Technical Field

The present application relates to the field of communications, and more specifically, to a communication method, a terminal device, and a network device.

Background technique

In the 5G new radio (NR) system, the network configures different downlink control information (DCI) formats for terminals to meet the scheduling requirements of different scenarios and network configurations. When configuring the network, in order to better utilize limited spectrum resources, spectrum resources can be shared between different data transmissions, so it is necessary to schedule data transmissions corresponding to two or more carriers. How to achieve more data transmission scheduling on limited resources has become a technical problem that needs to be solved.

Summary of the invention

The embodiments of the present application provide a communication method, a terminal device, and a network device, which can use one downlink control information to schedule data transmission of two or more carriers.

The present application provides a communication method, including:

The terminal device receives first downlink control information, where the first downlink control information is used to determine data transmission corresponding to at least two carriers.

The present application provides a communication method, including:

The network device sends first downlink control information downlink control information, where the first downlink control information is used to determine data transmission corresponding to at least two carriers.

The present application provides a control information determination device, including:

The first receiving unit is used for a terminal device to receive first downlink control information, where the first downlink control information is used to determine data transmission corresponding to at least two carriers.

The present application provides a control information indicating device, including:

The first sending unit is used for the network device to send first downlink control information downlink control information, where the first downlink control information is used to determine data transmission corresponding to at least two carriers.

The embodiment of the present application provides a terminal device, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory, so that the terminal device executes the first communication method mentioned above.

The embodiment of the present application provides a network device, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory, so that the network device executes the second communication method mentioned above.

An embodiment of the present application provides a chip for implementing the first communication method mentioned above.

Specifically, the chip includes: a processor, which is used to call and run a computer program from a memory, so that a device equipped with the chip executes the second communication method mentioned above.

An embodiment of the present application provides a chip for implementing the first communication method mentioned above.

Specifically, the chip includes: a processor, which is used to call and run a computer program from a memory, so that a device equipped with the chip executes the second communication method mentioned above.

An embodiment of the present application provides a computer-readable storage medium for storing a computer program. When the computer program is executed by a device, the device executes the above-mentioned first communication method.

An embodiment of the present application provides a computer-readable storage medium for storing a computer program. When the computer program is executed by a device, the device executes the second communication method described above.

An embodiment of the present application provides a computer program product, including computer program instructions, which enable a computer to execute the above-mentioned first communication method.

An embodiment of the present application provides a computer program product, including computer program instructions, which enable a computer to execute the second communication method described above.

An embodiment of the present application provides a computer program, which, when executed on a computer, enables the computer to execute the first communication method described above.

An embodiment of the present application provides a computer program, which, when executed on a computer, enables the computer to execute the second communication method described above.

The embodiment of the present application receives the first downlink control information for determining the data transmission corresponding to at least two carriers through the terminal device, thereby using one downlink control information to schedule the data transmission of two or more carriers, thereby enabling more data transmission scheduling on limited resources.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of an application scenario according to an embodiment of the present application.

FIG. 2 is a schematic flowchart of a communication method 200 according to an embodiment of the present application.

FIG3 is an implementation flow chart of Example 1 of the present application.

FIG4 is a flowchart of the implementation of Example 2 of the present application.

FIG5 is an implementation flow chart of Example 3 of the present application.

FIG6 is an implementation flowchart of Example 4 of the present application.

FIG. 7 is a schematic flowchart of a communication method 700 according to an embodiment of the present application.

FIG8 is a schematic diagram of the structure of a terminal device according to an embodiment of the present application.

FIG. 9 is a schematic diagram of the structure of a terminal device according to another embodiment of the present application.

FIG10 is a schematic structural diagram of a terminal device according to another embodiment of the present application.

FIG. 11 is a schematic diagram of the structure of a network device according to an embodiment of the present application.

FIG12 is a schematic structural diagram of a network device according to another embodiment of the present application.

FIG13 is a schematic structural diagram of a communication device according to an embodiment of the present application.

FIG. 14 is a schematic structural diagram of a chip according to an embodiment of the present application.

FIG. 15 is a schematic block diagram of a communication system according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced long term evolution (LTE-A) system, New Radio (NR) system, NR system evolution system, LTE on unlicensed spectrum (LTE-based access to unlicensed spectrum, LTE-U) system, NR on unlicensed spectrum (NR-based access to unlicensed spectrum, NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity) system. Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communications, but will also support, for example, device to device (D2D) communication, machine to machine (M2M) communication, machine type communication (MTC) communication, vehicle to vehicle (V2V) communication, or vehicle to everything (V2X) communication, etc. The embodiments of the present application can also be applied to these communication systems.

In one possible implementation, the communication system in the embodiment of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, or a standalone (SA) networking scenario.

In one possible implementation, the communication system in the embodiment of the present application can be applied to an unlicensed spectrum, where the unlicensed spectrum can also be considered as a shared spectrum; or, the communication system in the embodiment of the present application can also be applied to an authorized spectrum, where the authorized spectrum can also be considered as an unshared spectrum.

The embodiments of the present application describe various embodiments in conjunction with network devices and terminal devices, wherein the terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

The terminal device can be a station (STAION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a next-generation communication system such as an NR network, or a terminal device in a future evolved Public Land Mobile Network (PLMN) network, etc.

In the embodiments of the present application, the terminal device can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air (for example, on airplanes, balloons and satellites, etc.).

In the embodiment of the present application, the terminal device can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self driving, a wireless terminal device in remote medical, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, etc.

As an example but not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable devices may also be referred to as wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also powerful functions achieved through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-sized, and fully or partially independent of smartphones, such as smart watches or smart glasses, as well as devices that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various types of smart bracelets and smart jewelry for vital sign monitoring.

In an embodiment of the present application, the network device may be a device for communicating with a mobile device. The network device may be an access point (AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and a network device (gNB) in an NR network, or a network device in a future evolved PLMN network, or a network device in an NTN network, etc.

As an example and not a limitation, in an embodiment of the present application, the network device may have a mobile characteristic, for example, the network device may be a mobile device. Optionally, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc. Optionally, the network device may also be a base station set up in a location such as land or water.

In an embodiment of the present application, the network device can provide services for a cell, and the terminal device communicates with the network device through the transmission resources used by the cell (for example, frequency domain resources, or spectrum resources). The cell can be a cell corresponding to the network device (for example, a base station), and the cell can belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: metro cell, micro cell, pico cell, femto cell, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

FIG1 exemplarily shows a communication system 100. The communication system includes a network device 110 and two terminal devices 120. In a possible implementation, the communication system 100 may include multiple network devices 110, and each network device 110 may include other number of terminal devices 120 within its coverage area, which is not limited in the present embodiment.

In a possible implementation, the communication system 100 may also include other network entities such as a mobility management entity (MME) and an access and mobility management function (AMF), which is not limited in the embodiments of the present application.

Among them, the network equipment may include access network equipment and core network equipment. That is, the wireless communication system also includes multiple core networks for communicating with the access network equipment. The access network equipment may be an evolutionary base station (evolutional node B, referred to as eNB or e-NodeB) macro base station, micro base station (also called "small base station"), micro-micro base station, access point (AP), transmission point (TP) or new generation base station (new generation Node B, gNodeB), etc. in a long-term evolution (LTE) system, a next-generation (mobile communication system) (next radio, NR) system or an authorized auxiliary access long-term evolution (LAA-LTE) system.

It should be understood that the device with communication function in the network/system in the embodiment of the present application can be called a communication device. Taking the communication system shown in Figure 1 as an example, the communication device may include a network device and a terminal device with communication function, and the network device and the terminal device may be specific devices in the embodiment of the present application, which will not be repeated here; the communication device may also include other devices in the communication system, such as other network entities such as a network controller and a mobile management entity, which is not limited in the embodiment of the present application.

It should be understood that the terms "system" and "network" are often used interchangeably in this article. The term "and/or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and/or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character "/" in this article generally indicates that the associated objects before and after are in an "or" relationship.

It should be understood that the "indication" mentioned in the embodiments of the present application can be a direct indication, an indirect indication, or an indication of an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association relationship between A and B.

In the description of the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between two items, or an association relationship between the two items, or a relationship of indication and being indicated, configuration and being configured, etc.

To facilitate understanding of the technical solutions of the embodiments of the present application, the relevant technologies of the embodiments of the present application are described below. The following related technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as optional solutions, and they all belong to the protection scope of the embodiments of the present application.

Fig. 2 is a schematic flow chart of a communication method 200 according to an embodiment of the present application. The method may optionally be applied to the system shown in Fig. 1, but is not limited thereto. The method includes at least part of the following contents.

S210: The terminal device receives first downlink control information, where the first downlink control information is used to determine data transmission corresponding to at least two carriers.

The embodiment of the present application uses the first downlink control information to determine the data transmission corresponding to at least two carriers, and realizes the use of one downlink control information to schedule two or more data transmissions. Therefore, the method proposed in this embodiment can save channel resources and realize more data transmission scheduling on limited resources.

The above-mentioned first downlink control channel may also be referred to as a first DCI.

In a possible implementation, the first downlink control channel is used to determine at least two data transmissions corresponding to at least two carriers, each carrier corresponding to one data transmission. The at least two data transmissions corresponding to the at least two carriers can be divided into two data transmission groups, such as a first data transmission group and a second data transmission group, and the first data transmission group and the second data transmission group can each include at least one data transmission.

In a possible implementation manner, the first downlink control channel includes a first information indication field and a second information indication field;

Among the at least two data transmissions corresponding to the at least two carriers, a part of the data transmissions belongs to a first data transmission group, and another part of the data transmissions belongs to a second data transmission group;

In one embodiment of the present application, among the at least two data corresponding to the at least two carriers, the first data belongs to the first data transmission group, and the second data belongs to the second data transmission group. Or among the at least two data, at least one first data belongs to the first data transmission group, and at least one second data belongs to the second data transmission group, and the data transmission groups to which other data except the first data and the second data belong are not limited.

The first information indication field may carry transmission configuration information of data transmission in the first data transmission group;

The second information indication field may carry transmission configuration information of data transmission in the second data transmission group.

The above data transmission may be uplink data transmission or downlink data transmission.

The above transmission configuration may also be referred to as transmission information, transmission related information, transmission related configuration, etc. In a possible implementation, the transmission configuration of the above data transmission includes: frequency domain resources, time domain resources, new data indication, redundancy version, modulation decoding scheme, hybrid automatic repeat request (HARQ, Hybrid Automatic Repeat reQuest) process number, power control parameters, physical uplink control channel (PUCCH, Physical Uplink Control Channel) resources, and feedback timing or at least one of other related configurations.

In a possible implementation manner, the types of transmission configuration information carried by the first information indication field and the second information indication field are the same.

For example, the type of transmission configuration information carried by the first information indication field is frequency domain resource information, which is used to indicate the frequency domain resources for data transmission in the first data transmission group; the type of transmission configuration information carried by the second information indication field is also frequency domain resource information, which is used to indicate the frequency domain resources for data transmission in the second data transmission group.

For example, the type of transmission configuration information carried by the first information indication field is time domain resource information, which is used to indicate the time domain resources for data transmission in the first data transmission group; the type of transmission configuration information carried by the second information indication field is also time domain resource information, which is used to indicate the time domain resources for data transmission in the second data transmission group.

The following will not list all the situations exhaustively.

The contents of the transmission configuration information of the data transmission indicated by the first indication information and the second indication information may be the same or different. For example, the type of the transmission configuration information carried by the first information indication field is redundant version information, and the redundant version is the first redundant version; the type of the transmission configuration information carried by the second information indication field is redundant version information, and the redundant version is the second redundant version; the first redundant version and the second redundant version may be the same or different.

In a possible implementation manner, the first data transmission group corresponds to the first carrier group, and the data transmissions in the first data transmission group correspond one-to-one to the carriers in the first carrier group;

The second data transmission group corresponds to the second carrier group, and the data transmissions in the second data transmission group correspond one-to-one to the carriers in the second carrier group.

The carriers in the first carrier group and the carriers in the second carrier group do not overlap. For example, the carriers in the first carrier group do not overlap, and the carriers in the first carrier group do not overlap with the carriers in the second carrier group; and the carriers in the second carrier group do not overlap.

The first data transmission group may include at least one data transmission, and the second data transmission group may include at least one data transmission. Accordingly, the first carrier group may include at least one carrier, and the second carrier group may include at least one carrier.

In a possible implementation, the directions of the data transmissions in each data transmission group are the same. For example:

The data transmission included in the first data transmission group is uplink data transmission, and the data transmission included in the second data transmission group is uplink data transmission; or,

The data transmission included in the first data transmission group is uplink data transmission, and the data transmission included in the second data transmission group is downlink data transmission; or,

The data transmission included in the first data transmission group is downlink data transmission, and the data transmission included in the second data transmission group is uplink data transmission; or,

The data transmission included in the first data transmission group is downlink data transmission, and the data transmission included in the second data transmission group is downlink data transmission.

In one possible implementation, when both the first data transmission group and the second data transmission group include downlink data transmission, the carrier in the first carrier group corresponding to the first data transmission group corresponds to the first PUCCH carrier, and the carrier in the second carrier group corresponding to the second data transmission group corresponds to the second PUCCH carrier; the first PUCCH carrier is the same as or different from the second PUCCH carrier.

Obviously, if the first PUCCH carrier is different from the second PUCCH carrier, the terminal device can distinguish the first data transmission group from the second data transmission group according to the PUCCH carrier corresponding to the data transmission (downlink data transmission). For example, the data transmission group consisting of the data transmission corresponding to all carriers corresponding to the first PUCCH carrier is determined as the first data transmission group, and the data transmission group consisting of the data transmission corresponding to all carriers corresponding to the second PUCCH carrier is determined as the second data transmission group.

In one possible implementation, the carriers in the first carrier group corresponding to the first data transmission group and the scheduling carrier are in the same bandwidth, and the carriers in the second carrier group corresponding to the second data transmission group and the scheduling carrier are in different bandwidths; wherein the scheduling carrier is the carrier that carries the first downlink control information.

The above bandwidth can also be a band; the carriers in the first carrier group and the scheduled carriers are in the same bandwidth, that is, the carriers in the first carrier group and the scheduled carriers are intra-band, and the carriers in the second carrier group and the scheduled carriers are in different bandwidths, that is, the carriers in the second carrier group and the scheduled carriers are inter-band.

The above division method of the first data transmission group and the second data transmission group is only an example, and the embodiments of the present application can also be divided in other ways; for example, the carriers in the first carrier group corresponding to the first data transmission group and the scheduled carrier are in different bandwidths, and the carriers in the second carrier group corresponding to the second data transmission group and the scheduled carrier are in the same bandwidth.

Obviously, according to whether the corresponding carrier is in the same bandwidth (such as band) as the scheduled carrier, the terminal device can distinguish the first data transmission group from the second data transmission group. For example, the data transmission group consisting of data transmissions corresponding to all carriers in the same bandwidth (such as band) as the scheduled carrier is determined as the first data transmission group, and the data transmission group consisting of data transmissions corresponding to all carriers not in the same bandwidth (such as band) as the scheduled carrier is determined as the second data transmission group.

In a possible implementation manner, the terminal device in the embodiment of the present application receives a radio resource control (RRC) signaling before receiving the first downlink control information, where the RRC signaling may indicate multiple carriers, including at least two carriers that can be scheduled by the first downlink control information; and/or,

The RRC signaling indicates multiple carrier groups, including at least one of a first carrier group and a second carrier group that can be scheduled by the first downlink control information.

For example, multiple carrier groups are indicated in the RRC signaling, including carrier group 1, carrier group 2, ... carrier group n (n is a positive integer); these carrier groups include two carrier groups that can be scheduled by the first downlink control information, namely, the first carrier group and the second carrier group. The first downlink control information may indicate identification information of the first carrier group and the second carrier group, so that the UE can determine the carrier group scheduled by the first downlink control information.

If the RRC signaling indicates multiple carriers scheduled by the first downlink control information, but does not distinguish between the first carrier group and the second carrier group; in this case, the terminal device can determine the first carrier group and the second carrier group based on the PUCCH carriers corresponding to each carrier, or determine the first carrier group and the second carrier group based on whether each carrier and the scheduled carrier are in the same bandwidth (such as band).

In a possible implementation, the RRC signaling received by the terminal device may also indicate whether the data transmission in the data transmission group corresponding to the first carrier group and the second carrier group is uplink transmission or downlink transmission. For example, the RRC signaling received by the terminal device includes indication information, and the indication information may be an enumeration type, and each value of the indication information indicates the following four situations respectively:

(1) The data transmission corresponding to the first carrier group is uplink data transmission, and the data transmission corresponding to the second carrier group is uplink data transmission;

(2) the data transmission corresponding to the first carrier group is uplink data transmission, and the data transmission corresponding to the second carrier group is downlink data transmission;

(3) the data transmission corresponding to the first carrier group is downlink data transmission, and the data transmission corresponding to the second carrier group is uplink data transmission;

(4) The data transmission corresponding to the first carrier group is downlink data transmission, and the data transmission corresponding to the second carrier group is downlink data transmission.

Taking the first carrier group corresponding to the first data transmission group and the second carrier group corresponding to the second data transmission group as an example, the above four situations can also be called:

(1) The data transmission included in the first data transmission group is uplink data transmission, and the data transmission included in the second data transmission group is uplink data transmission;

(2) the data transmission included in the first data transmission group is uplink data transmission, and the data transmission included in the second data transmission group is downlink data transmission;

(3) The data transmission included in the first data transmission group is downlink data transmission, and the data transmission included in the second data transmission group is uplink data transmission;

(4) The data transmission included in the first data transmission group is downlink data transmission, and the data transmission included in the second data transmission group is downlink data transmission.

The multiple carriers, the first carrier group and/or the second carrier group scheduled by the first downlink control information may also be indicated by the first downlink control information. For example:

The first downlink control information indicates multiple scheduled carriers; and/or,

The first downlink control information indicates at least one of the scheduled first carrier group and the second carrier group.

When only multiple scheduled carriers are indicated in the first downlink control information without distinguishing between the first carrier group and the second carrier group, the terminal device can also determine the first carrier group and the second carrier group based on the PUCCH carriers corresponding to each carrier, or determine the first carrier group and the second carrier group based on whether each carrier and the scheduled carrier are in the same bandwidth (such as band).

In a possible implementation manner, information as to whether data transmission in the data transmission group corresponding to the first carrier group and/or the second carrier group is uplink transmission or downlink transmission may also be indicated by first downlink control information, for example, the first downlink control information includes a first indication field and a second indication field;

The first indication field is used to indicate whether the data transmission corresponding to the first carrier group is uplink data transmission or downlink data transmission;

The second indication field is used to indicate whether the data transmission corresponding to the second carrier group is uplink data transmission or downlink data transmission.

The length of the first indication field and the length of the second indication field may be 1 bit respectively, and may indicate the above four situations.

Alternatively, in other possible implementations, the first downlink control information may include a third indication field;

The third indication field is used to indicate that the data transmission corresponding to the first carrier group is uplink data transmission or downlink data transmission, and the data transmission corresponding to the second carrier group is uplink data transmission or downlink data transmission.

The length of the third indication field may be 2 bits, which may indicate the above four situations.

The following, in conjunction with the accompanying drawings, describes in detail an example in which a terminal device determines, according to the above-mentioned indication methods, data transmission corresponding to a carrier scheduled by the first downlink control information.

Example 1:

FIG3 is a flowchart of an implementation of Example 1 of the present application, including:

The terminal device receives RRC signaling, which indicates multiple carriers, including at least two carriers that can be scheduled by the first downlink control information, and indicates that the first data transmission group corresponding to the first carrier group includes uplink data transmission or downlink data transmission, and the second data transmission group corresponding to the second carrier group includes uplink data transmission or downlink data transmission.

The terminal device receives first downlink control information, which includes a first information indication field and a second information indication field. The first information indication field carries first indication information, which is used to indicate the transmission configuration of data transmission in the first data transmission group; the second information indication field carries second indication information, which is used to indicate the transmission configuration of data transmission in the second data transmission group. The above transmission configuration can be at least one of frequency domain resources, time domain resources, new data indication, redundant version, modulation and decoding scheme, HARQ process number, power control parameter, PUCCH resource, feedback timing, and can also be other configuration information, which is not exhaustive in the embodiments of the present application. The first indication information and the second indication information indicate the same type of transmission configuration.

The terminal device determines the first carrier group and the second carrier group based on the PUCCH carriers corresponding to each carrier; or, determines the first carrier group and the second carrier group based on whether each carrier is in the same bandwidth (such as band) as the scheduled carrier; and the terminal device determines the transmission configuration of data transmission in the first carrier group and the second carrier group based on the first DCI.

Example 2:

FIG4 is a flowchart of the implementation of Example 2 of the present application, including:

The terminal device receives RRC signaling, which indicates multiple carrier groups, including a first carrier group and a second carrier group scheduled by first downlink control information, and indicates that a first data transmission group corresponding to the first carrier group includes uplink data transmission or downlink data transmission, and a second data transmission group corresponding to the second carrier group includes uplink data transmission or downlink data transmission.

The terminal device receives the first downlink control information, which includes the first information indication field and the second information indication field. Among them, the first information indication field carries the first indication information, and the first indication information is used to indicate the transmission configuration of the data transmission in the first data transmission group; the second information indication field carries the second indication information, and the second indication information is used to indicate the transmission configuration of the data transmission in the second data transmission group. The above-mentioned transmission configuration can be at least one of frequency domain resources, time domain resources, new data indication, redundant version, modulation and decoding scheme, HARQ process number, power control parameter, PUCCH resource, feedback timing, and can also be other configuration information, which is not exhaustive in the embodiments of the present application. The first indication information and the second indication information indicate the same type of transmission configuration. The first downlink control information also carries the identification information of the first carrier group and the identification information of the second carrier group, so that the terminal device can determine which two carrier groups are scheduled by the first downlink control information.

The terminal device determines, based on the first DCI, a transmission configuration for data transmission in the first carrier group and the second carrier group.

Example 3:

FIG5 is a flowchart of the implementation of Example 3 of the present application, including:

The terminal device receives RRC signaling, which indicates multiple carriers scheduled by the first downlink control information.

The terminal device receives the first downlink control information, which includes a first information indication field and a second information indication field. Among them, the first information indication field carries the first indication information, and the first indication information is used to indicate the transmission configuration of the data transmission in the first data transmission group; the second information indication field carries the second indication information, and the second indication information is used to indicate the transmission configuration of the data transmission in the second data transmission group. The above transmission configuration can be at least one of frequency domain resources, time domain resources, new data indication, redundancy version, modulation and decoding scheme, HARQ process number, power control parameter, PUCCH resource, feedback timing, and can also be other configuration information, which is not exhaustive in the embodiments of the present application. The first indication information and the second indication information indicate the same type of transmission configuration. The first downlink control information also indicates that the first data transmission group corresponding to the first carrier group includes uplink data transmission or downlink data transmission, and the second data transmission group corresponding to the second carrier group includes uplink data transmission or downlink data transmission.

The terminal device determines the first carrier group and the second carrier group based on the PUCCH carriers corresponding to each carrier; or, determines the first carrier group and the second carrier group based on whether each carrier is in the same bandwidth (such as band) as the scheduled carrier; and the terminal device determines the transmission configuration of data transmission in the first carrier group and the second carrier group based on the first DCI.

Example 4:

FIG6 is a flowchart of the implementation of Example 4 of the present application, including:

The terminal device receives RRC signaling, which indicates multiple carrier groups, including a first carrier group and a second carrier group scheduled by first downlink control information.

The terminal device receives the first downlink control information, which includes the first information indication field and the second information indication field. Among them, the first information indication field carries the first indication information, and the first indication information is used to indicate the transmission configuration of the data transmission in the first data transmission group; the second information indication field carries the second indication information, and the second indication information is used to indicate the transmission configuration of the data transmission in the second data transmission group. The above transmission configuration can be at least one of frequency domain resources, time domain resources, new data indication, redundant version, modulation and decoding scheme, HARQ process number, power control parameter, PUCCH resource, feedback timing, and can also be other configuration information, which is not exhaustive in the embodiments of the present application. The first indication information and the second indication information indicate the same type of transmission configuration. The first downlink control information also carries the identification information of the first carrier group and the identification information of the second carrier group, so that the terminal device can determine which two carrier groups are scheduled by the first downlink control information. The first downlink control information also indicates that the first data transmission group corresponding to the first carrier group includes uplink data transmission or downlink data transmission, and the second data transmission group corresponding to the second carrier group includes uplink data transmission or downlink data transmission.

The terminal device determines, based on the first DCI, a transmission configuration for data transmission in the first carrier group and the second carrier group.

In the above examples 1 to 4, the first data transmission group and/or the second data transmission group are configured to include uplink data transmission or downlink data transmission using RRC signaling or the first downlink control information. In other examples of the present invention, the direction of data transmission in the first data transmission group and the second data transmission group may not be configured separately. For example, if the first downlink control information is an uplink scheduling DCI, the first data transmission group and the second data transmission group scheduled by the first downlink control information both include uplink data transmission; if the first downlink control information is a downlink scheduling DCI, the first data transmission group and the second data transmission group scheduled by the first downlink control information both include downlink data transmission; in this case, there is no need to separately configure the direction of data transmission in the first data transmission group and the second data transmission group.

The above situation is shown in Example 5 and Example 6:

Example 5:

The terminal device receives RRC signaling, which indicates multiple carriers, including at least two carriers that can be scheduled by the first downlink control information.

The terminal device receives first downlink control information, which includes a first information indication field and a second information indication field. The first information indication field carries first indication information, which is used to indicate the transmission configuration of data transmission in the first data transmission group; the second information indication field carries second indication information, which is used to indicate the transmission configuration of data transmission in the second data transmission group. The first indication information and the second indication information indicate the same type of transmission configuration.

The terminal device determines the first carrier group and the second carrier group based on the PUCCH carriers corresponding to each carrier; or, determines the first carrier group and the second carrier group based on whether each carrier is in the same bandwidth (such as band) as the scheduled carrier; and the terminal device determines the transmission configuration of data transmission in the first carrier group and the second carrier group based on the first DCI.

Example 6:

The terminal device receives RRC signaling, which indicates multiple carrier groups, including a first carrier group and a second carrier group scheduled by first downlink control information.

The terminal device receives first downlink control information, which includes a first information indication field and a second information indication field. The first information indication field carries first indication information, which is used to indicate the transmission configuration of data transmission in the first data transmission group; the second information indication field carries second indication information, which is used to indicate the transmission configuration of data transmission in the second data transmission group. The first indication information and the second indication information indicate the same type of transmission configuration. The first downlink control information also carries identification information of the first carrier group and identification information of the second carrier group, so that the terminal device can determine which two carrier groups are scheduled by the first downlink control information.

The terminal device determines, based on the first DCI, a transmission configuration for data transmission in the first carrier group and the second carrier group.

The above introduces several specific implementation methods for the terminal device to determine the data transmission corresponding to the carrier scheduled by the first downlink control information according to the instructions of the network device (such as a base station). This application does not list these methods exhaustively and does not exclude other implementation methods with the same design idea.

The following are several specific configuration methods:

Example 1: The network device sends the first downlink control information through CC0, and configures the first carrier group that can be scheduled by the first downlink control information for the terminal device to include {CC 1, CC2, CC3, CC4}, and the second carrier group that can be scheduled by the first downlink control information includes {CC 5, CC6}; wherein, the PUCCH carriers corresponding to CC 1, CC2, CC3, and CC4 are the same, and the PUCCH carriers corresponding to CC 5 and CC6 are the same.

Example 2: The network device sends the first downlink control information through CC0, and configures the first carrier group that can be scheduled by the first downlink control information for the terminal device to include {CC 1, CC3, CC4}, and the second carrier group that can be scheduled by the first downlink control information includes {CC2, CC5}. Among them, CC 1, CC3, CC4, and CC0 are in the same bandwidth (such as band); CC2, CC5 and CC0 are in different bandwidths (such as band), and CC2 and CC5 can be in the same or different bandwidths.

Example 3: The network device sends the first downlink control information through CC0, and configures the first carrier group that can be scheduled by the first downlink control information for the terminal device to include {CC 1, CC2, CC3, CC4}, and the second carrier group that can be scheduled by the first downlink control information includes {CC 5, CC6}. In addition, at least one data transmission in the first data transmission group corresponding to the first carrier group can be all uplink data transmission, or all downlink data transmission; at least one data transmission in the second data transmission group corresponding to the second carrier group can be all uplink data transmission, or all downlink data transmission.

If all the data in the first data transmission group are uplink data transmissions, and all the data in the second data transmission group are uplink data transmissions, the scheduling result may be that each carrier in CC1 to CC6 has a corresponding PUCCH transmission;

If all the data in the first data transmission group are uplink data transmissions and all the data in the second data transmission group are downlink data transmissions, the scheduling result may be that each carrier in CC1 to CC4 has a corresponding PUCCH transmission and each carrier in CC5 to CC6 has a corresponding PDCCH transmission;

If all the data in the first data transmission group are downlink data transmissions, and all the data in the second data transmission group are uplink data transmissions, the scheduling result may be that each carrier in CC1 to CC4 has a corresponding PDCCH transmission, and each carrier in CC5 to CC6 has a corresponding PUCCH transmission;

If all the data in the first data transmission group are downlink data transmissions and all the data in the second data transmission group are downlink data transmissions, the scheduling result is that each carrier in CC1 to CC6 has a corresponding PDCCH transmission.

According to the first indication information and the second indication information carried in the first downlink control information, the terminal device can determine the transmission configuration corresponding to the data transmission in the first data transmission group and the second data transmission group. The following are several examples of first downlink control information (hereinafter referred to as first DCI).

Embodiment 1:

The first information indication field in the first DCI is a first frequency domain resource allocation field, and the first frequency domain resource allocation field carries first indication information for indicating frequency domain resources corresponding to data transmission in the first data transmission group;

The second information indication field in the first DCI is a second frequency domain resource allocation field, and the second frequency domain resource allocation field carries second indication information for indicating frequency domain resources corresponding to data transmission in the second data transmission group.

For example, the first DCI is configured with two configuration resource allocation (FDRA, Frequency Domain Resource Assignment) fields, including FDRA1 and FDRA2, which are used to indicate the frequency domain resources corresponding to data transmission of different carrier groups. The first DCI can schedule two configured carrier groups, carrier group one includes {CC1, CC2, CC3}, and carrier group two includes {CC4, CC5}.

The FDRA1 domain carries a frequency domain resource indication, and the value of the frequency domain resource indication is 0011100, so the frequency domain resource indication corresponding to the data transmission on all carriers in carrier group one is 0011100. It should be noted that the frequency domain resources corresponding to the data transmission on each carrier in carrier group one may be the same or different. For example, when determining the frequency domain resources corresponding to the data transmission on each carrier in carrier group one, the frequency domain resource indication is used to map to the RB range. Due to different factors such as the bandwidth configuration of the carrier and the resource allocation method, the frequency domain resources mapped to different carriers may be the same or different.

The FDRA2 domain carries a frequency domain resource indication, and the value of the frequency domain resource indication is 1101001. Then the frequency domain resource indication corresponding to the data transmission on all carriers in carrier group 2 is 1101001. Similarly, after mapping the frequency domain resource indication, the frequency domain resources corresponding to the data transmission on each carrier in carrier group 2 may also be the same or different.

Embodiment 2:

The first information indication field in the first DCI is a first time domain resource allocation field, and the first time domain resource allocation field carries first indication information for indicating a time domain resource corresponding to data transmission in the first data transmission group;

The second information indication field in the first DCI is a second time domain resource allocation field, and the second time domain resource allocation field carries second indication information for indicating the time domain resources corresponding to the data transmission in the second data transmission group.

For example, the first DCI is configured with two time domain resource indication (TDRA, Time Domain Resource Assignment) fields, including TDRA1 and TDRA2, which are used to indicate the time domain resources corresponding to data transmission of different carrier groups. The first DCI can schedule two configured carrier groups, carrier group 1 includes {CC1, CC2, CC3}, and carrier group 2 includes {CC4, CC5}.

The TDRA1 domain carries a time domain resource indication whose value is 0011. The time domain resource indication corresponding to data transmission on all carriers in carrier group one is 0011. Based on this indication, the terminal device can determine that the time domain resource corresponding to data transmission on each carrier in carrier group one is the 4th row in the time domain resource list.

The TDRA2 domain carries a time domain resource indication whose value is 0001. The time domain resource indication corresponding to data transmission on all carriers in carrier group one is 0001. Based on this indication, the terminal device can determine that the time domain resource corresponding to data transmission on each carrier in carrier group two is the second row in the time domain resource list.

Embodiment three:

The first information indication field in the first DCI is a first new data indication field, and the first new data indication field carries first indication information used to indicate whether the data transmission in the first data transmission group is a retransmission or an initial transmission;

The second information indication field in the first DCI is a second new data indication field, and the second new data indication field carries second indication information for indicating whether the data transmission in the second data transmission group is a retransmission or an initial transmission.

For example, two new data indication (NDI) fields are configured in the first DCI, including NDI1 and NDI2, which are used to indicate whether the data transmission corresponding to the data transmission of different carrier groups is a retransmission or an initial transmission. The first DCI can schedule two configured carrier groups, carrier group one includes {CC1, CC2, CC3}, and carrier group two includes {CC4, CC5}.

For the same HARQ process, if the indication information in the NDI1 domain is the same as the indication information in the NDI1 domain of the last transmission, the terminal device can determine that the data transmission on each carrier in the carrier group one is a retransmission; if the indication information in the NDI1 domain is different from the indication information in the NDI1 domain of the last transmission, the terminal device can determine that the data transmission on each carrier in the carrier group one is an initial transmission;

For the same HARQ process, if the indication information in the NDI2 domain is the same as the indication information in the NDI2 domain of the last transmission, the terminal device can determine that the data transmission on each carrier in carrier group two is a retransmission; if the indication information in the NDI2 domain is different from the indication information in the NDI2 domain of the last transmission, the terminal device can determine that the data transmission on each carrier in carrier group two is an initial transmission.

Embodiment 4:

The first information indication field in the first DCI is a first redundancy version field, and the first redundancy version field carries first indication information for indicating a redundancy version corresponding to data transmission in the first data transmission group;

The second information indication field in the first DCI is a second redundancy version field, and the second redundancy version field carries second indication information for indicating a redundancy version corresponding to data transmission in the second data transmission group.

For example, two redundancy version (RV) fields, RV1 and RV2, are configured in the first DCI to indicate the redundancy versions corresponding to data transmissions of different carrier groups. The first DCI can schedule two configured carrier groups, where carrier group one includes {CC1, CC2, CC3}, and carrier group two includes {CC4, CC5}.

The RV1 domain carries a redundancy version indication whose value is 11. The redundancy version indication corresponding to the data transmission on all carriers in carrier group one is 11. Based on this indication, the terminal device can determine that the data transmission on each carrier in carrier group one uses redundancy version 3.

The RV2 domain carries a redundancy version indication whose value is 01. The redundancy version indication corresponding to the data transmission on all carriers in carrier group two is 01. Based on this indication, the terminal device can determine that the data transmission on each carrier in carrier group two uses redundancy version 1.

Embodiment five:

The first information indication field in the first DCI is a first process identifier indication field, and the first process identifier indication field carries first indication information for indicating a HARQ process number corresponding to data transmission in the first data transmission group;

The second information indication field in the first DCI is a second process identifier indication field, and the second process identifier indication field carries second indication information for indicating a HARQ process number corresponding to data transmission in the second data transmission group.

For example, two process identification indication fields (HARQ-ID) fields are configured in the first DCI, including HARQ-ID1 and HARQ-ID2, which are used to indicate the HARQ process numbers corresponding to data transmissions of different carrier groups. The DCI can schedule two configured carrier groups, carrier group one includes {CC1, CC2, CC3}, and carrier group two includes {CC4, CC5}.

The HARQ-ID1 field carries a process identification indication, and the value of the process identification indication is 0101. Then the HARQ process number indication corresponding to the data transmission on all carriers in carrier group one is 0101; according to the indication, the terminal device can determine the HARQ process number used for data transmission on each carrier in carrier group one. Specifically, data transmission on different carriers in carrier group one can use the same HARQ process number, such as data transmission on CC1, CC2, and CC3 all use the HARQ process number corresponding to 0101. Alternatively, data transmission on different carriers in carrier group one can use different HARQ process numbers, such as starting with 0101 and increasing in sequence, the HARQ process numbers used for data transmission on CC1, CC2, and CC3 can correspond to 0101, 0110, and 0111 respectively; for example, starting with 0101 and decreasing in sequence, the HARQ process numbers used for data transmission on CC1, CC2, and CC3 can correspond to 0101, 0100, and 0011 respectively. The embodiment of the present application does not limit the specific method of determining the HARQ process number corresponding to each data transmission, nor does it list them all. The embodiment of the present application can use any pre-set rules and determine the HARQ process number used for data transmission corresponding to each carrier according to the indication carried in the HARQ-ID1 field.

The HARQ-ID2 field carries a process identification indication, and the value of the process identification indication is 0110, so the HARQ process number indication corresponding to the data transmission on all carriers in carrier group 2 is 0110; based on this indication, the terminal device can determine the HARQ process number used for data transmission on each carrier in carrier group 2. The specific determination method is the same as the above determination method for carrier group 2, and will not be repeated here.

Embodiment six:

The first information indication field in the first DCI is a first uplink control channel resource indication field, and the first uplink control channel resource indication field carries first indication information for indicating a PUCCH resource used for HARQ-ACK feedback corresponding to data transmission in the first data transmission group;

The second information indication field in the first DCI is a second uplink control channel resource indication field, and the second uplink control channel resource indication field carries second indication information for indicating the PUCCH resources used for HARQ-ACK feedback corresponding to the data transmission in the second data transmission group.

For example, two uplink control channel resource indication (PRI, PUCCH Resource Indicator) fields are configured in the first DCI, including PRI1 and PRI2, which are used to indicate the PUCCH resources used for HARQ-ACK feedback corresponding to data transmission of different carrier groups. The first DCI can schedule two configured carrier groups, carrier group one includes {CC1, CC2, CC3}, and carrier group two includes {CC4, CC5}.

The PRI1 domain carries an uplink control channel resource indication, and the value of the uplink control channel resource indication is 101. The PUCCH resource indication used for the HARQ-ACK feedback corresponding to the data transmission on all carriers in carrier group one is 101; based on this indication, the terminal device can determine the PUCCH resources used for the HARQ-ACK feedback corresponding to the downlink transmission on each carrier in carrier group one.

The PRI2 domain carries an uplink control channel resource indication, and the value of the uplink control channel resource indication is 110. The PUCCH resource indication used for the HARQ-ACK feedback corresponding to the data transmission on all carriers in carrier group two is 110; based on this indication, the terminal device can determine the PUCCH resources used for the HARQ-ACK feedback corresponding to the downlink transmission on each carrier in carrier group two.

Embodiment seven:

The first information indication field in the first DCI is a first feedback timing field, and the first feedback timing field carries first indication information for indicating a HARQ-ACK feedback timing corresponding to data transmission in the first data transmission group;

The second information indication field in the first DCI is a second feedback timing field, and the second feedback timing field carries second indication information for indicating the HARQ-ACK feedback timing corresponding to the data transmission in the second data transmission group.

For example, two feedback timing fields are configured in the first DCI, including feedback timing1 and feedback timing2, which are used to indicate the HARQ-ACK feedback timing corresponding to the data transmission of different carrier groups. The first DCI can schedule two configured carrier groups, carrier group one includes {CC1, CC2, CC3}, and carrier group two includes {CC4, CC5}.

The feedback timing1 domain carries a feedback timing domain indication, and the value of the feedback timing domain indication can be 011. Then the HARQ-ACK feedback timing indication corresponding to the data transmission on all carriers in carrier group one is 011; based on this indication, the terminal device can determine that the HARQ-ACK feedback timing indication corresponding to the downlink transmission on each carrier in carrier group one is 011.

The feedback timing2 domain carries a feedback timing domain indication, and the value of the feedback timing domain indication can be 010. Then the HARQ-ACK feedback timing indication corresponding to the data transmission on all carriers in carrier group two is 010; based on this indication, the terminal device can determine that the HARQ-ACK feedback timing indication corresponding to the downlink transmission on each carrier in carrier group two is 010.

Embodiment eight:

The first information indication field in the first DCI is a first modulation and decoding field, and the first modulation and decoding field carries first indication information for indicating a modulation and decoding scheme used for data transmission in the first data transmission group;

The second information indication field in the first DCI is a second modulation and decoding field, and the second modulation and decoding field carries second indication information for indicating a modulation and decoding scheme used for data transmission in the data transmission group.

For example, two modulation and decoding domains are configured in the first DCI, including a first modulation and decoding domain and a second modulation and decoding domain, which are used to indicate the modulation and decoding schemes corresponding to data transmission of different carrier groups. The first DCI can schedule two configured carrier groups, carrier group one includes {CC1, CC2, CC3}, and carrier group two includes {CC4, CC5}.

The first modulation and decoding domain carries a modulation and decoding indication, and the value of the modulation and decoding indication can be 0110. Then the modulation and decoding indication corresponding to the data transmission on all carriers in carrier group one is 0110; based on this indication, the terminal device can determine that the modulation and decoding scheme corresponding to the data transmission on each carrier in carrier group one is the modulation and decoding scheme corresponding to 0110.

The second modulation and decoding domain carries a modulation and decoding indication, and the value of the modulation and decoding indication can be 0111. Then the modulation and decoding indication corresponding to the data transmission on all carriers in carrier group two is 0111; based on this indication, the terminal device can determine that the modulation and decoding scheme corresponding to the data transmission on each carrier in carrier group two is the modulation and decoding scheme corresponding to 0111.

Then, according to the corresponding relationship between different values of the preset modulation and decoding indication and the modulation and decoding scheme, the modulation and decoding scheme corresponding to each data transmission can be determined.

Embodiment nine:

The first information indication field in the first DCI is a first power control parameter field, and the first power control parameter field carries first indication information for indicating a power control parameter used for data transmission in the first data transmission group;

The second information indication field in the first DCI is a second power control parameter field, and the second power control parameter field carries second indication information for indicating a power control parameter used for data transmission in the second data transmission group.

For example, two power control parameter fields are configured in the first DCI, including a first power control parameter field and a second power control parameter field, which are used to indicate power control parameters corresponding to data transmission of different carrier groups. The first DCI can schedule two configured carrier groups, carrier group one includes {CC1, CC2, CC3}, and carrier group two includes {CC4, CC5}.

The first power control parameter domain carries a power control parameter indication, and the value of the power control parameter indication can be 0010. Then the power control parameter indication corresponding to the data transmission on all carriers in carrier group one is 0010; based on the indication, the terminal device can determine that the power control parameter corresponding to the data transmission on each carrier in carrier group one is the power control parameter corresponding to 0010.

The second power control parameter domain carries a power control parameter indication, and the value of the power control parameter indication can be 0001. Then the power control parameter indication corresponding to the data transmission on all carriers in carrier group two is 0001; based on this indication, the terminal device can determine that the power control parameter corresponding to the data transmission on each carrier in carrier group two is the power control parameter corresponding to 0001.

Then, according to the corresponding relationship between different values of the preset power control parameter indication and the power control parameter, the power control parameter corresponding to each data transmission can be determined.

The above examples are illustrated by taking the example that carrier group 1 and carrier group 2 both include more than two carriers. In other embodiments of the present application, carrier group 1 and/or carrier group 2 may also include only one carrier. In this case, the first DCI is used to determine the data transmission corresponding to the two carriers.

The embodiment of the present application also proposes a communication method. FIG7 is a schematic flow chart of a communication method 700 according to an embodiment of the present application. The method can optionally be applied to the system shown in FIG1 , but is not limited thereto. The method includes at least part of the following contents.

S710: The network device sends first downlink control information, where the first downlink control information is used to determine data transmission corresponding to at least two carriers.

In a possible implementation manner, in an embodiment of the present application, the first downlink control information is used to determine at least two data transmissions corresponding to at least two carriers, and each carrier corresponds to one data transmission.

In a possible implementation manner, in the embodiment of the present application, the first downlink control information includes a first information indication field and a second information indication field;

Among the at least two data transmissions corresponding to the at least two carriers, a part of the data transmissions belongs to a first data transmission group, and another part of the data transmissions belongs to a second data transmission group;

The first information indication field carries transmission configuration information of data transmission in the first data transmission group;

The second information indication field carries transmission configuration information of data transmission in the second data transmission group.

In a possible implementation manner, in an embodiment of the present application, the first data transmission group corresponds to a first carrier group, and data transmissions in the first data transmission group correspond one-to-one to carriers in the first carrier group;

The second data transmission group corresponds to a second carrier group, and the data transmissions in the second data transmission group correspond one-to-one to the carriers in the second carrier group.

In a possible implementation manner, in an embodiment of the present application, the type of transmission configuration information carried by the first information indication field and the second information indication field is the same.

In a possible implementation manner, in the embodiment of the present application, the configuration of data transmission indicated by the first indication information or the second indication information includes at least one of the following:

Frequency domain resources, time domain resources, new data indication, RV, modulation and decoding scheme, HARQ process number, power control parameters, PUCCH resources, and feedback timing.

In a possible implementation manner, in the embodiment of the present application, the first data transmission group or the second data transmission group includes at least one downlink data transmission;

The carrier in the first carrier group corresponding to the first data transmission group corresponds to a first PUCCH carrier, and the carrier in the second carrier group corresponding to the second data transmission group corresponds to a second PUCCH carrier; the first PUCCH carrier is the same as or different from the second PUCCH carrier.

In a possible implementation, in an embodiment of the present application, the carriers in the first carrier group corresponding to the first data transmission group and the scheduling carrier are in the same bandwidth, and the carriers in the second carrier group corresponding to the second data transmission group and the scheduling carrier are in different bandwidths; wherein the scheduling carrier is the carrier that carries the first downlink control information.

In a possible implementation manner, in an embodiment of the present application, the data transmission included in the first data transmission group is uplink data transmission, and the data transmission included in the second data transmission group is uplink data transmission; or,

The data transmission included in the first data transmission group is uplink data transmission, and the data transmission included in the second data transmission group is downlink data transmission; or,

The data transmission included in the first data transmission group is downlink data transmission, and the data transmission included in the second data transmission group is uplink data transmission; or,

The data transmission included in the first data transmission group is downlink data transmission, and the data transmission included in the second data transmission group is downlink data transmission.

In a possible implementation manner, in an embodiment of the present application, the first information indication field is a first frequency domain resource allocation field, and the first frequency domain resource allocation field is used to indicate the frequency domain resources corresponding to the data transmission in the first data transmission group;

The second information indication field is a second frequency domain resource allocation field, and the second frequency domain resource allocation field is used to indicate the frequency domain resources corresponding to the data transmission in the second data transmission group.

In a possible implementation manner, in an embodiment of the present application, the first information indication field is a first time domain resource allocation field, and the first time domain resource allocation field is used to indicate the time domain resources corresponding to the data transmission in the first data transmission group;

The second information indication field is a second time domain resource allocation field, and the second time domain resource allocation field is used to indicate the time domain resources corresponding to the data transmission in the second data transmission group.

In a possible implementation manner, in an embodiment of the present application, the first information indication field is a first new data indication field, and the first new data indication field is used to indicate whether the data transmission in the first data transmission group is a retransmission or an initial transmission;

The second information indication field is a second new data indication field, and the second new data indication field is used to indicate whether the data transmission in the second data transmission group is a retransmission or an initial transmission.

In a possible implementation manner, in an embodiment of the present application, the first information indication field is a first redundancy version field, and the first redundancy version field is used to indicate a redundancy version corresponding to data transmission in the first data transmission group;

The second information indication field is a second redundancy version field, and the second redundancy version field is used to indicate a redundancy version corresponding to the data transmission in the second data transmission group.

In a possible implementation manner, in an embodiment of the present application, the first information indication field is a first process identifier indication field, and the first process identifier indication field is used to indicate a HARQ process number corresponding to data transmission in the first data transmission group;

The second information indication field is a second process identifier indication field, and the second process identifier indication field is used to indicate the HARQ process number corresponding to the data transmission in the second data transmission group.

In a possible implementation manner, in an embodiment of the present application, the first information indication field is a first uplink control channel resource indication field, and the first uplink control channel resource indication field is used to indicate the PUCCH resource used for HARQ-ACK feedback corresponding to the data transmission in the first data transmission group;

The second information indication field is a second uplink control channel resource indication field, and the second uplink control channel resource indication field is used to indicate the PUCCH resources used for HARQ-ACK feedback corresponding to the data transmission in the second data transmission group.

In a possible implementation manner, in an embodiment of the present application, the first information indication field is a first feedback timing field, and the first feedback timing field is used to indicate the HARQ-ACK feedback timing corresponding to the data transmission in the first data transmission group;

The second information indication field is a second feedback timing field, and the second feedback timing field is used to indicate the HARQ-ACK feedback timing corresponding to the data transmission in the second data transmission group.

In a possible implementation manner, in an embodiment of the present application, the first information indication field is a first modulation and decoding field, and the first modulation and decoding field is used to indicate a modulation and decoding scheme used for data transmission in the first data transmission group;

The second information indication field is a second modulation and decoding field, and the second modulation and decoding field is used to indicate a modulation and decoding scheme used for data transmission in the second data transmission group.

In a possible implementation manner, in an embodiment of the present application, the first information indication field is a first power control parameter field, and the first power control parameter field is used to indicate a power control parameter used for data transmission in the first data transmission group;

The second information indication field is a second power control parameter field, and the second power control parameter field carries a power control parameter used to indicate the data transmission used in the second data transmission group.

In a possible implementation manner, in the embodiment of the present application, the method further includes:

The network device sends RRC signaling, where the RRC signaling indicates multiple carriers, and the multiple carriers include at least two carriers that can be scheduled by the first downlink control information; and/or,

The RRC signaling indicates a plurality of carrier groups, and the plurality of carrier groups include at least one of a first carrier group and a second carrier group that can be scheduled by the first downlink control information.

In a possible implementation manner, in the embodiment of the present application, the RRC signaling further indicates that the data transmission corresponding to the first carrier group is uplink data transmission or downlink data transmission;

And/or, the RRC signaling further indicates that the data transmission corresponding to the second carrier group is uplink data transmission or downlink data transmission.

In a possible implementation manner, in the embodiment of the present application, the first downlink control information indicates multiple scheduled carriers; and/or,

The first downlink control information indicates at least one of a scheduled first carrier group and a scheduled second carrier group.

In a possible implementation manner, in the embodiment of the present application, the first downlink control information includes a first indication field and a second indication field;

The first indication field is used to indicate whether data transmission corresponding to the first carrier group is uplink data transmission or downlink data transmission;

The second indication field is used to indicate whether data transmission corresponding to the second carrier group is uplink data transmission or downlink data transmission.

In a possible implementation manner, the first downlink control information includes a third indication field;

The third indication field is used to indicate that the data transmission corresponding to the first carrier group is uplink data transmission or downlink data transmission, and the data transmission corresponding to the second carrier group is uplink data transmission or downlink data transmission.

For a specific example of the network device executing method 700 of this embodiment, reference may be made to the relevant description about the terminal device in the above method 200, which will not be repeated here for the sake of brevity.

FIG8 is a schematic diagram of the structure of a network device 800 according to an embodiment of the present application. The network determination device 800 may include:

The first receiving unit 810 is configured to receive first downlink control information, where the first downlink control information is used to determine data transmission corresponding to at least two carriers.

In a possible implementation manner, in an embodiment of the present application, the first downlink control information is used to determine at least two data transmissions corresponding to at least two carriers, and each carrier corresponds to one data transmission.

In a possible implementation manner, in the embodiment of the present application, the first downlink control information includes a first information indication field and a second information indication field;

Among the at least two data transmissions corresponding to the at least two carriers, a part of the data transmissions belongs to a first data transmission group, and another part of the data transmissions belongs to a second data transmission group;

The first information indication field carries transmission configuration information of data transmission in the first data transmission group;

The second information indication field carries transmission configuration information of data transmission in the second data transmission group.

In a possible implementation manner, in an embodiment of the present application, the first data transmission group corresponds to a first carrier group, and data transmissions in the first data transmission group correspond one-to-one to carriers in the first carrier group;

The second data transmission group corresponds to a second carrier group, and the data transmissions in the second data transmission group correspond one-to-one to the carriers in the second carrier group.

In a possible implementation manner, in an embodiment of the present application, the type of transmission configuration information carried by the first information indication field and the second information indication field is the same.

In a possible implementation, in an embodiment of the present application, the data transmission configuration includes at least one of the following:

Frequency domain resources, time domain resources, new data indication, RV, modulation and decoding scheme, HARQ process number, power control parameters, PUCCH resources, and feedback timing.

In a possible implementation manner, in the embodiment of the present application, the first data transmission group or the second data transmission group includes at least one downlink data transmission; or,

The carrier in the first carrier group corresponding to the first data transmission group corresponds to a first PUCCH carrier, and the carrier in the second carrier group corresponding to the second data transmission group corresponds to a second PUCCH carrier; the first PUCCH carrier is the same as or different from the second PUCCH carrier.

In a possible implementation, in an embodiment of the present application, the carriers in the first carrier group corresponding to the first data transmission group and the scheduling carrier are in the same bandwidth, and the carriers in the second carrier group corresponding to the second data transmission group and the scheduling carrier are in different bandwidths; wherein the scheduling carrier is the carrier that carries the first downlink control information.

In a possible implementation manner, in the embodiment of the present application, the data transmission included in the first data transmission group is uplink data transmission, and the data transmission included in the second data transmission group is uplink data transmission; or,

The data transmission included in the first data transmission group is uplink data transmission, and the data transmission included in the second data transmission group is downlink data transmission; or,

The data transmission included in the first data transmission group is downlink data transmission, and the data transmission included in the second data transmission group is uplink data transmission; or,

The data transmission included in the first data transmission group is downlink data transmission, and the data transmission included in the second data transmission group is downlink data transmission.

In a possible implementation manner, in an embodiment of the present application, the first information indication field is a first frequency domain resource allocation field, and the first frequency domain resource allocation field is used to indicate the frequency domain resources corresponding to the data transmission in the first data transmission group;

The second information indication field is a second frequency domain resource allocation field, and the second frequency domain resource allocation field is used to indicate the frequency domain resources corresponding to the data transmission in the second data transmission group.

In a possible implementation manner, in an embodiment of the present application, the first information indication field is a first time domain resource allocation field, and the first time domain resource allocation field is used to indicate the time domain resources corresponding to the data transmission in the first data transmission group;

The second information indication field is a second time domain resource allocation field, and the second time domain resource allocation field is used to indicate the time domain resources corresponding to the data transmission in the second data transmission group.

In a possible implementation manner, in an embodiment of the present application, the first information indication field is a first new data indication field, and the first new data indication field is used to indicate whether the data transmission in the first data transmission group is a retransmission or an initial transmission;

The second information indication field is a second new data indication field, and the second new data indication field is used to indicate whether the data transmission in the second data transmission group is a retransmission or an initial transmission.

In a possible implementation manner, in the embodiment of the present application, the first information indication field is a first RV field, and the first RV field is used to indicate the RV corresponding to the data transmission in the first data transmission group;

The second information indication field is a second RV field, and the second RV field is used to indicate the RV corresponding to the data transmission in the second data transmission group.

In a possible implementation manner, in an embodiment of the present application, the first information indication field is a first process identifier indication field, and the first process identifier indication field is used to indicate a HARQ process number corresponding to data transmission in the first data transmission group;

The second information indication field is a second process identifier indication field, and the second process identifier indication field is used to indicate the HARQ process number corresponding to the data transmission in the second data transmission group.

In a possible implementation manner, in an embodiment of the present application, the first information indication field is a first uplink control channel resource indication field, and the first uplink control channel resource indication field is used to indicate the PUCCH resource used for HARQ-ACK feedback corresponding to the data transmission in the first data transmission group;

The second information indication field is a second uplink control channel resource indication field, and the second uplink control channel resource indication field is used to indicate the PUCCH resources used for HARQ-ACK feedback corresponding to the data transmission in the second data transmission group.

In a possible implementation manner, in an embodiment of the present application, the first information indication field is a first feedback timing field, and the first feedback timing field is used to indicate the HARQ-ACK feedback timing corresponding to the data transmission in the first data transmission group;

The second information indication field is a second feedback timing field, and the second feedback timing field is used to indicate the HARQ-ACK feedback timing corresponding to the data transmission in the second data transmission group.

In a possible implementation manner, in an embodiment of the present application, the first information indication field is a first modulation and decoding field, and the first modulation and decoding field is used to indicate a modulation and decoding scheme used for data transmission in the first data transmission group;

The second information indication field is a second modulation and decoding field, and the second modulation and decoding field is used to indicate a modulation and decoding scheme used for data transmission in the second data transmission group.

In a possible implementation manner, in an embodiment of the present application, the first information indication field is a first power control parameter field, and the first power control parameter field is used to indicate a power control parameter used for data transmission in the first data transmission group;

The second information indication field is a second power control parameter field, and the second power control parameter field is used to indicate a power control parameter used for data transmission in the second data transmission group.

FIG9 is a schematic diagram of the structure of a terminal device 900 according to another embodiment of the present application. The terminal device 900 includes one or more features of the above-mentioned terminal device 800 embodiment. In a possible implementation, in the embodiment of the present application, it also includes:

The second receiving unit 910 is configured to receive a radio resource control RRC signaling, where the RRC signaling indicates a plurality of carriers, and the plurality of carriers include at least two carriers scheduled by the first downlink control information; and/or,

The RRC signaling indicates a plurality of carrier groups, and the plurality of carrier groups include at least one of a first carrier group and a second carrier group scheduled by the first downlink control information.

In a possible implementation manner, in the embodiment of the present application, the RRC signaling further indicates that the data transmission corresponding to the first carrier group is uplink data transmission or downlink data transmission;

And/or, the RRC signaling further indicates that the data transmission corresponding to the second carrier group is uplink data transmission or downlink data transmission.

In a possible implementation manner, in the embodiment of the present application, the first downlink control information indicates multiple scheduled carriers; and/or,

The first downlink control information indicates at least one of a scheduled first carrier group and a scheduled second carrier group.

In a possible implementation manner, in the embodiment of the present application, the first downlink control information includes a first indication field and a second indication field;

The first indication field is used to indicate whether data transmission corresponding to the first carrier group is uplink data transmission or downlink data transmission;

The second indication field is used to indicate whether data transmission corresponding to the second carrier group is uplink data transmission or downlink data transmission.

In a possible implementation manner, in the embodiment of the present application, the first downlink control information includes a third indication field;

The third indication field is used to indicate that the data transmission corresponding to the first carrier group is uplink data transmission or downlink data transmission, and the data transmission corresponding to the second carrier group is uplink data transmission or downlink data transmission.

FIG10 is a schematic diagram of the structure of a terminal device 1000 according to another embodiment of the present application. The terminal device 1000 includes one or more features of the above-mentioned terminal device 900 embodiment. In a possible implementation, in the embodiment of the present application, it also includes:

The first determination unit 1010 is used to determine the first carrier group and/or the second carrier group scheduled by the first downlink control information according to the PUCCH carriers corresponding to the respective carriers scheduled by the first downlink control information.

The second determination unit 1020 is used to determine the first carrier group and/or the second carrier group scheduled by the first downlink control information according to whether each carrier scheduled by the first downlink control information is in the same bandwidth as the scheduled carrier; wherein the scheduled carrier is the carrier that carries the first downlink control information.

FIG11 is a schematic diagram of the structure of a network device 1100 according to an embodiment of the present application. In a possible implementation, in the embodiment of the present application, the network device 1100 includes:

The first sending unit 1110 is configured to send first downlink control information, where the first downlink control information is used to determine data transmission corresponding to at least two carriers.

In a possible implementation manner, in an embodiment of the present application, the first downlink control information is used to determine at least two data transmissions corresponding to at least two carriers, and each carrier corresponds to one data transmission.

In a possible implementation manner, in the embodiment of the present application, the first downlink control information includes a first information indication field and a second information indication field;

Among the at least two data transmissions corresponding to the at least two carriers, a part of the data transmissions belongs to a first data transmission group, and another part of the data transmissions belongs to a second data transmission group;

The first information indication field carries transmission configuration information of data transmission in the first data transmission group;

The second information indication field carries transmission configuration information of data transmission in the second data transmission group.

In a possible implementation manner, in an embodiment of the present application, the first data transmission group corresponds to a first carrier group, and data transmissions in the first data transmission group correspond one-to-one to carriers in the first carrier group;

The second data transmission group corresponds to a second carrier group, and the data transmissions in the second data transmission group correspond one-to-one to the carriers in the second carrier group.

In a possible implementation manner, in the embodiment of the present application, the type of transmission configuration information carried by the first information indication field and the second information indication field is the same.

In a possible implementation, in an embodiment of the present application, the data transmission configuration includes at least one of the following:

Frequency domain resources, time domain resources, new data indication, RV, modulation and decoding scheme, HARQ process number, power control parameters, PUCCH resources, and feedback timing.

In a possible implementation manner, in the embodiment of the present application, the first data transmission group or the second data transmission group includes at least one downlink data transmission; or,

The carrier in the first carrier group corresponding to the first data transmission group corresponds to a first PUCCH carrier, and the carrier in the second carrier group corresponding to the second data transmission group corresponds to a second PUCCH carrier; the first PUCCH carrier is the same as or different from the second PUCCH carrier.

In a possible implementation, in an embodiment of the present application, the carriers in the first carrier group corresponding to the first data transmission group and the scheduling carrier are in the same bandwidth, and the carriers in the second carrier group corresponding to the second data transmission group and the scheduling carrier are in different bandwidths; wherein the scheduling carrier is the carrier that carries the first downlink control information.

In a possible implementation manner, in the embodiment of the present application, the data transmission included in the first data transmission group is uplink data transmission, and the data transmission included in the second data transmission group is uplink data transmission; or,

The data transmission included in the first data transmission group is uplink data transmission, and the data transmission included in the second data transmission group is downlink data transmission; or,

The data transmission included in the first data transmission group is downlink data transmission, and the data transmission included in the second data transmission group is uplink data transmission; or,

The data transmission included in the first data transmission group is downlink data transmission, and the data transmission included in the second data transmission group is downlink data transmission.

In a possible implementation manner, in an embodiment of the present application, the first information indication field is a first frequency domain resource allocation field, and the first frequency domain resource allocation field is used to indicate the frequency domain resources corresponding to the data transmission in the first data transmission group;

The second information indication field is a second frequency domain resource allocation field, and the second frequency domain resource allocation field is used to indicate the frequency domain resources corresponding to the data transmission in the second data transmission group.

In a possible implementation manner, in an embodiment of the present application, the first information indication field is a first time domain resource allocation field, and the first time domain resource allocation field is used to indicate the time domain resources corresponding to the data transmission in the first data transmission group;

The second information indication field is a second time domain resource allocation field, and the second time domain resource allocation field is used to indicate the time domain resources corresponding to the data transmission in the second data transmission group.

In a possible implementation manner, in an embodiment of the present application, the first information indication field is a first new data indication field, and the first new data indication field is used to indicate whether the data transmission in the first data transmission group is a retransmission or an initial transmission;

The second information indication field is a second new data indication field, and the second new data indication field is used to indicate whether the data transmission in the second data transmission group is a retransmission or an initial transmission.

In a possible implementation manner, in an embodiment of the present application, the first information indication field is a first redundancy version field, and the first redundancy version field is used to indicate a redundancy version corresponding to data transmission in the first data transmission group;

The second information indication field is a second redundancy version field, and the second redundancy version field is used to indicate a redundancy version corresponding to the data transmission in the second data transmission group.

In a possible implementation manner, in an embodiment of the present application, the first information indication field is a first process identifier indication field, and the first process identifier indication field is used to indicate a HARQ process number corresponding to data transmission in the first data transmission group;

The second information indication field is a second process identifier indication field, and the second process identifier indication field is used to indicate the HARQ process number corresponding to the data transmission in the second data transmission group.

In a possible implementation manner, in an embodiment of the present application, the first information indication field is a first uplink control channel resource indication field, and the first uplink control channel resource indication field is used to indicate the PUCCH resource used for HARQ-ACK feedback corresponding to the data transmission in the first data transmission group;

The second information indication field is a second uplink control channel resource indication field, and the second uplink control channel resource indication field is used to indicate the PUCCH resources used for HARQ-ACK feedback corresponding to the data transmission in the second data transmission group.

In a possible implementation manner, in an embodiment of the present application, the first information indication field is a first feedback timing field, and the first feedback timing field is used to indicate the HARQ-ACK feedback timing corresponding to the data transmission in the first data transmission group;

The second information indication field is a second feedback timing field, and the second feedback timing field is used to indicate the HARQ-ACK feedback timing corresponding to the data transmission in the second data transmission group.

In a possible implementation manner, in an embodiment of the present application, the first information indication field is a first modulation and decoding field, and the first modulation and decoding field is used to indicate a modulation and decoding scheme used for data transmission in the first data transmission group;

The second information indication field is a second modulation and decoding field, and the second modulation and decoding field is used to indicate a modulation and decoding scheme used for data transmission in the second data transmission group.

In a possible implementation manner, in an embodiment of the present application, the first information indication field is a first power control parameter field, and the first power control parameter field is used to indicate a power control parameter used for data transmission in the first data transmission group;

The second information indication field is a second power control parameter field, and the second power control parameter field is used to indicate a power control parameter used for data transmission in the second data transmission group.

FIG12 is a schematic diagram of the structure of a network device 1200 according to another embodiment of the present application. The network device 1200 includes one or more features of the above-mentioned network device 1100 embodiment. In a possible implementation, in the embodiment of the present application, it also includes:

The second sending unit 1210 is configured to send RRC signaling, where the RRC signaling indicates multiple carriers, and the multiple carriers include at least two carriers that can be scheduled by the first downlink control information; and/or,

The RRC signaling indicates a plurality of carrier groups, and the plurality of carrier groups include at least one of a first carrier group and a second carrier group that can be scheduled by the first downlink control information.

In a possible implementation manner, in the embodiment of the present application, the RRC signaling further indicates that the data transmission corresponding to the first carrier group is uplink data transmission or downlink data transmission;

And/or, the RRC signaling further indicates that the data transmission corresponding to the second carrier group is uplink data transmission or downlink data transmission.

In a possible implementation manner, in the embodiment of the present application, the first downlink control information indicates multiple scheduled carriers; and/or,

The first downlink control information indicates at least one of a scheduled first carrier group and a scheduled second carrier group.

In a possible implementation manner, in the embodiment of the present application, the first downlink control information includes a first indication field and a second indication field;

The first indication field is used to indicate whether data transmission corresponding to the first carrier group is uplink data transmission or downlink data transmission;

The second indication field is used to indicate whether data transmission corresponding to the second carrier group is uplink data transmission or downlink data transmission.

In a possible implementation manner, in the embodiment of the present application, the first downlink control information includes a third indication field;

The third indication field is used to indicate that the data transmission corresponding to the first carrier group is uplink data transmission or downlink data transmission, and the data transmission corresponding to the second carrier group is uplink data transmission or downlink data transmission.

Fig. 13 is a schematic structural diagram of a communication device 1300 according to an embodiment of the present application. The communication device 1300 includes a processor 1310, and the processor 1310 can call and run a computer program from a memory to enable the communication device 1300 to implement the method in the embodiment of the present application.

In a possible implementation, the communication device 1300 may further include a memory 1320. The processor 1310 may call and run a computer program from the memory 1320, so that the communication device 1300 implements the method in the embodiment of the present application.

The memory 1320 may be a separate device independent of the processor 1310 , or may be integrated into the processor 1310 .

In a possible implementation, the communication device 1300 may further include a transceiver 1330, and the processor 1310 may control the transceiver 1330 to communicate with other devices, specifically, may send information or data to other devices, or receive information or data sent by other devices.

The transceiver 1330 may include a transmitter and a receiver. The transceiver 1330 may further include an antenna, and the number of antennas may be one or more.

In one possible implementation, the communication device 1300 may be a network device of an embodiment of the present application, and the communication device 1300 may implement the corresponding processes implemented by the network device in each method of the embodiment of the present application, which will not be described here for the sake of brevity.

In one possible implementation, the communication device 1300 may be a terminal device of an embodiment of the present application, and the communication device 1300 may implement the corresponding processes implemented by the terminal device in each method of the embodiment of the present application, which will not be described here for the sake of brevity.

Fig. 14 is a schematic structural diagram of a chip 1500 according to an embodiment of the present application. The chip 1500 includes a processor 1510, and the processor 1510 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

In a possible implementation, the chip 1500 may further include a memory 1520. The processor 1510 may call and run a computer program from the memory 1520 to implement the method executed by the terminal device or the network device in the embodiment of the present application.

The memory 1520 may be a separate device independent of the processor 1510 , or may be integrated into the processor 1510 .

In a possible implementation, the chip 1500 may further include an input interface 1530. The processor 1510 may control the input interface 1530 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

In a possible implementation, the chip 1500 may further include an output interface 1540. The processor 1510 may control the output interface 1540 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

In one possible implementation, the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

In one possible implementation, the chip can be applied to the terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the terminal device in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

The chips used in the network device and the terminal device may be the same chip or different chips.

It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

The processor mentioned above may be a general-purpose processor, a digital signal processor (DSP), a field programmable gate array (FPGA), an application specific integrated circuit (ASIC) or other programmable logic devices, transistor logic devices, discrete hardware components, etc. Among them, the general-purpose processor mentioned above may be a microprocessor or any conventional processor, etc.

The memory mentioned above may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable ROM (PROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM) or a flash memory. The volatile memory may be a random access memory (RAM).

It should be understood that the above-mentioned memory is exemplary but not restrictive. For example, the memory in the embodiments of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is to say, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.

FIG15 is a schematic block diagram of a communication system 1600 according to an embodiment of the present application. The communication system 1600 includes a terminal device 1610 and a network device 1620 .

The terminal device 1610 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 1620 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, they will not be described in detail here.

In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instruction is loaded and executed on a computer, the process or function in accordance with the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instruction can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instruction can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (Digital Subscriber Line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server, data center, etc. that contains one or more available media integrations. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (eg, a solid state disk (SSD)).

It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims (107)

A communication method, comprising: The terminal device receives first downlink control information, where the first downlink control information is used to determine data transmission corresponding to at least two carriers. The method according to claim 1, wherein The first downlink control information is used to determine at least two data transmissions corresponding to at least two carriers, and each carrier corresponds to one data transmission. The method according to claim 1 or 2, wherein the first downlink control information includes a first information indication field and a second information indication field; Among the at least two data transmissions corresponding to the at least two carriers, a part of the data transmissions belongs to a first data transmission group, and another part of the data transmissions belongs to a second data transmission group; The first information indication field carries transmission configuration information of data transmission in the first data transmission group; The second information indication field carries transmission configuration information of data transmission in the second data transmission group. The method according to claim 3, wherein The first data transmission group corresponds to a first carrier group, and data transmissions in the first data transmission group correspond one-to-one to carriers in the first carrier group; The second data transmission group corresponds to a second carrier group, and the data transmissions in the second data transmission group correspond one-to-one to the carriers in the second carrier group. The method according to claim 3 or 4, wherein the type of transmission configuration information carried by the first information indication field and the second information indication field is the same. The method according to claim 5, wherein the data transmission configuration includes at least one of the following: Frequency domain resources, time domain resources, new data indication, redundancy version RV, modulation and decoding scheme, hybrid automatic repeat request HARQ process number, power control parameters, physical uplink control channel PUCCH resources, and feedback timing. The method according to any one of claims 3 to 6, wherein the first data transmission group or the second data transmission group includes at least one downlink data transmission; or The carrier in the first carrier group corresponding to the first data transmission group corresponds to a first PUCCH carrier, and the carrier in the second carrier group corresponding to the second data transmission group corresponds to a second PUCCH carrier; the first PUCCH carrier is the same as or different from the second PUCCH carrier. According to any one of the methods described in claims 3 to 7, wherein the carriers in the first carrier group corresponding to the first data transmission group and the scheduling carrier are in the same bandwidth, and the carriers in the second carrier group corresponding to the second data transmission group and the scheduling carrier are in different bandwidths; wherein the scheduling carrier is the carrier that carries the first downlink control information. The method according to any one of claims 3 to 8, wherein: The data transmission included in the first data transmission group is uplink data transmission, and the data transmission included in the second data transmission group is uplink data transmission; or, The data transmission included in the first data transmission group is uplink data transmission, and the data transmission included in the second data transmission group is downlink data transmission; or, The data transmission included in the first data transmission group is downlink data transmission, and the data transmission included in the second data transmission group is uplink data transmission; or, The data transmission included in the first data transmission group is downlink data transmission, and the data transmission included in the second data transmission group is downlink data transmission. The method according to any one of claims 3 to 9, wherein: The first information indication field is a first frequency domain resource allocation field, and the first frequency domain resource allocation field is used to indicate the frequency domain resources corresponding to the data transmission in the first data transmission group; The second information indication field is a second frequency domain resource allocation field, and the second frequency domain resource allocation field is used to indicate the frequency domain resources corresponding to the data transmission in the second data transmission group. The method according to any one of claims 3 to 9, wherein: The first information indication field is a first time domain resource allocation field, and the first time domain resource allocation field is used to indicate the time domain resources corresponding to the data transmission in the first data transmission group; The second information indication field is a second time domain resource allocation field, and the second time domain resource allocation field is used to indicate the time domain resources corresponding to the data transmission in the second data transmission group. The method according to any one of claims 3 to 9, wherein: The first information indication field is a first new data indication field, and the first new data indication field is used to indicate whether the data transmission in the first data transmission group is a retransmission or an initial transmission; The second information indication field is a second new data indication field, and the second new data indication field is used to indicate whether the data transmission in the second data transmission group is a retransmission or an initial transmission. The method according to any one of claims 3 to 9, wherein: The first information indication field is a first redundancy version field, and the first redundancy version field is used to indicate the RV corresponding to the data transmission in the first data transmission group; The second information indication field is a second redundancy version field, and the second redundancy version field is used to indicate the RV corresponding to the data transmission in the second data transmission group. The method according to any one of claims 3 to 9, wherein: The first information indication field is a first process identifier indication field, and the first process identifier indication field is used to indicate the HARQ process number corresponding to the data transmission in the first data transmission group; The second information indication field is a second process identifier indication field, and the second process identifier indication field is used to indicate the HARQ process number corresponding to the data transmission in the second data transmission group. The method according to any one of claims 3 to 9, wherein: The first information indication field is a first uplink control channel resource indication field, and the first uplink control channel resource indication field is used to indicate the PUCCH resources used for HARQ-acknowledgement ACK feedback corresponding to the data transmission in the first data transmission group; The second information indication field is a second uplink control channel resource indication field, and the second uplink control channel resource indication field is used to indicate the PUCCH resources used for HARQ-ACK feedback corresponding to the data transmission in the second data transmission group. The method according to any one of claims 3 to 9, wherein: The first information indication field is a first feedback timing field, and the first feedback timing field is used to indicate the HARQ-ACK feedback timing corresponding to the data transmission in the first data transmission group; The second information indication field is a second feedback timing field, and the second feedback timing field is used to indicate the HARQ-ACK feedback timing corresponding to the data transmission in the second data transmission group. The method according to any one of claims 3 to 9, wherein: The first information indication field is a first modulation and decoding field, and the first modulation and decoding field is used to indicate a modulation and decoding scheme used for data transmission in the first data transmission group; The second information indication field is a second modulation and decoding field, and the second modulation and decoding field is used to indicate a modulation and decoding scheme used for data transmission in the second data transmission group. The method according to any one of claims 3 to 9, wherein: The first information indication field is a first power control parameter field, and the first power control parameter field is used to indicate a power control parameter used for data transmission in the first data transmission group; The second information indication field is a second power control parameter field, and the second power control parameter field is used to indicate a power control parameter used for data transmission in the second data transmission group. The method according to any one of claims 1 to 18, further comprising: The terminal device receives radio resource control RRC signaling, where the RRC signaling indicates multiple carriers, and the multiple carriers include at least two carriers scheduled by the first downlink control information; and/or, The RRC signaling indicates a plurality of carrier groups, and the plurality of carrier groups include at least one of a first carrier group and a second carrier group scheduled by the first downlink control information. The method according to claim 19, wherein the RRC signaling further indicates that the data transmission corresponding to the first carrier group is uplink data transmission or downlink data transmission; And/or, the RRC signaling further indicates that the data transmission corresponding to the second carrier group is uplink data transmission or downlink data transmission. The method according to any one of claims 1 to 18, wherein the first downlink control information indicates a plurality of scheduled carriers; and/or, The first downlink control information indicates at least one of a scheduled first carrier group and a scheduled second carrier group. The method according to claim 21, wherein The first downlink control information includes a first indication field and a second indication field; The first indication field is used to indicate whether data transmission corresponding to the first carrier group is uplink data transmission or downlink data transmission; The second indication field is used to indicate whether data transmission corresponding to the second carrier group is uplink data transmission or downlink data transmission. The method according to claim 21, wherein The first downlink control information includes a third indication field; The third indication field is used to indicate that the data transmission corresponding to the first carrier group is uplink data transmission or downlink data transmission, and the data transmission corresponding to the second carrier group is uplink data transmission or downlink data transmission. The method according to any one of claims 19 to 23, further comprising: The terminal device determines the first carrier group and/or the second carrier group scheduled by the first downlink control information according to the PUCCH carriers corresponding to the respective carriers scheduled by the first downlink control information. The method according to any one of claims 19 to 23, further comprising: The terminal device determines the first carrier group and/or the second carrier group scheduled by the first downlink control information according to whether each carrier scheduled by the first downlink control information is in the same bandwidth as the scheduled carrier; wherein the scheduled carrier is the carrier that carries the first downlink control information. A communication method, comprising: The network device sends first downlink control information, where the first downlink control information is used to determine data transmission corresponding to at least two carriers. The method according to claim 26, wherein the first downlink control information is used to determine at least two data transmissions corresponding to at least two carriers, each carrier corresponding to one data transmission. The method according to claim 26 or 27, wherein the first downlink control information includes a first information indication field and a second information indication field; Among the at least two data transmissions corresponding to the at least two carriers, a part of the data transmissions belongs to a first data transmission group, and another part of the data transmissions belongs to a second data transmission group; The first information indication field carries transmission configuration information of data transmission in the first data transmission group; The second information indication field carries transmission configuration information of data transmission in the second data transmission group. The method according to claim 28, wherein The first data transmission group corresponds to a first carrier group, and data transmissions in the first data transmission group correspond one-to-one to carriers in the first carrier group; The second data transmission group corresponds to a second carrier group, and the data transmissions in the second data transmission group correspond one-to-one to the carriers in the second carrier group. The method according to claim 28 or 29, wherein the type of transmission configuration information carried by the first information indication field and the second information indication field is the same. The method of claim 30, wherein the data transmission configuration comprises at least one of the following: Frequency domain resources, time domain resources, new data indication, RV, modulation and decoding scheme, HARQ process number, power control parameters, PUCCH resources, and feedback timing. The method according to any one of claims 28 to 31, wherein the first data transmission group or the second data transmission group includes at least one downlink data transmission; or The carrier in the first carrier group corresponding to the first data transmission group corresponds to a first PUCCH carrier, and the carrier in the second carrier group corresponding to the second data transmission group corresponds to a second PUCCH carrier; the first PUCCH carrier is the same as or different from the second PUCCH carrier. According to any one of the methods described in claims 28 to 32, wherein the carriers in the first carrier group corresponding to the first data transmission group and the scheduling carrier are in the same bandwidth, and the carriers in the second carrier group corresponding to the second data transmission group and the scheduling carrier are in different bandwidths; wherein the scheduling carrier is the carrier that carries the first downlink control information. A method according to any one of claims 28 to 33, wherein: The data transmission included in the first data transmission group is uplink data transmission, and the data transmission included in the second data transmission group is uplink data transmission; or, The data transmission included in the first data transmission group is uplink data transmission, and the data transmission included in the second data transmission group is downlink data transmission; or, The data transmission included in the first data transmission group is downlink data transmission, and the data transmission included in the second data transmission group is uplink data transmission; or, The data transmission included in the first data transmission group is downlink data transmission, and the data transmission included in the second data transmission group is downlink data transmission. A method according to any one of claims 28 to 34, wherein: The first information indication field is a first frequency domain resource allocation field, and the first frequency domain resource allocation field is used to indicate the frequency domain resources corresponding to the data transmission in the first data transmission group; The second information indication field is a second frequency domain resource allocation field, and the second frequency domain resource allocation field is used to indicate the frequency domain resources corresponding to the data transmission in the second data transmission group. A method according to any one of claims 28 to 34, wherein: The first information indication field is a first time domain resource allocation field, and the first time domain resource allocation field is used to indicate the time domain resources corresponding to the data transmission in the first data transmission group; The second information indication field is a second time domain resource allocation field, and the second time domain resource allocation field is used to indicate the time domain resources corresponding to the data transmission in the second data transmission group. A method according to any one of claims 28 to 34, wherein: The first information indication field is a first new data indication field, and the first new data indication field is used to indicate whether the data transmission in the first data transmission group is a retransmission or an initial transmission; The second information indication field is a second new data indication field, and the second new data indication field is used to indicate whether the data transmission in the second data transmission group is a retransmission or an initial transmission. A method according to any one of claims 28 to 34, wherein: The first information indication field is a first redundancy version field, and the first redundancy version field is used to indicate a redundancy version corresponding to data transmission in the first data transmission group; The second information indication field is a second redundancy version field, and the second redundancy version field is used to indicate a redundancy version corresponding to the data transmission in the second data transmission group. A method according to any one of claims 28 to 34, wherein: The first information indication field is a first process identifier indication field, and the first process identifier indication field is used to indicate the HARQ process number corresponding to the data transmission in the first data transmission group; The second information indication field is a second process identifier indication field, and the second process identifier indication field is used to indicate the HARQ process number corresponding to the data transmission in the second data transmission group. A method according to any one of claims 28 to 34, wherein: The first information indication field is a first uplink control channel resource indication field, and the first uplink control channel resource indication field is used to indicate the PUCCH resources used for HARQ-ACK feedback corresponding to the data transmission in the first data transmission group; The second information indication field is a second uplink control channel resource indication field, and the second uplink control channel resource indication field is used to indicate the PUCCH resources used for HARQ-ACK feedback corresponding to the data transmission in the second data transmission group. A method according to any one of claims 28 to 34, wherein: The first information indication field is a first feedback timing field, and the first feedback timing field is used to indicate the HARQ-ACK feedback timing corresponding to the data transmission in the first data transmission group; The second information indication field is a second feedback timing field, and the second feedback timing field is used to indicate the HARQ-ACK feedback timing corresponding to the data transmission in the second data transmission group. A method according to any one of claims 28 to 34, wherein: The first information indication field is a first modulation and decoding field, and the first modulation and decoding field is used to indicate a modulation and decoding scheme used for data transmission in the first data transmission group; The second information indication field is a second modulation and decoding field, and the second modulation and decoding field is used to indicate a modulation and decoding scheme used for data transmission in the second data transmission group. A method according to any one of claims 28 to 34, wherein: The first information indication field is a first power control parameter field, and the first power control parameter field is used to indicate a power control parameter used for data transmission in the first data transmission group; The second information indication field is a second power control parameter field, and the second power control parameter field carries a power control parameter used to indicate the data transmission used in the second data transmission group. The method according to any one of claims 26 to 43, further comprising: The network device sends RRC signaling, where the RRC signaling indicates multiple carriers, and the multiple carriers include at least two carriers that can be scheduled by the first downlink control information; and/or, The RRC signaling indicates a plurality of carrier groups, and the plurality of carrier groups include at least one of a first carrier group and a second carrier group that can be scheduled by the first downlink control information. The method according to claim 44, wherein the RRC signaling further indicates that the data transmission corresponding to the first carrier group is uplink data transmission or downlink data transmission; And/or, the RRC signaling further indicates that the data transmission corresponding to the second carrier group is uplink data transmission or downlink data transmission. The method according to any one of claims 26 to 43, wherein the first downlink control information indicates a plurality of scheduled carriers; and/or, The first downlink control information indicates at least one of a scheduled first carrier group and a scheduled second carrier group. The method according to claim 46, wherein The first downlink control information includes a first indication field and a second indication field; The first indication field is used to indicate whether data transmission corresponding to the first carrier group is uplink data transmission or downlink data transmission; The second indication field is used to indicate whether data transmission corresponding to the second carrier group is uplink data transmission or downlink data transmission. The method according to claim 46, wherein The first downlink control information includes a third indication field; The third indication field is used to indicate that the data transmission corresponding to the first carrier group is uplink data transmission or downlink data transmission, and the data transmission corresponding to the second carrier group is uplink data transmission or downlink data transmission. A terminal device, comprising: The first receiving unit is configured to receive first downlink control information, where the first downlink control information is used to determine data transmission corresponding to at least two carriers. The terminal device according to claim 49, wherein the first downlink control information is used to determine at least two data transmissions corresponding to at least two carriers, and each carrier corresponds to one data transmission. The terminal device according to claim 49 or 50, wherein the first downlink control information includes a first information indication field and a second information indication field; Among the at least two data transmissions corresponding to the at least two carriers, a part of the data transmissions belongs to a first data transmission group, and another part of the data transmissions belongs to a second data transmission group; The first information indication field carries transmission configuration information of data transmission in the first data transmission group; The second information indication field carries transmission configuration information of data transmission in the second data transmission group. The terminal device according to claim 51, wherein: The first data transmission group corresponds to a first carrier group, and data transmissions in the first data transmission group correspond one-to-one to carriers in the first carrier group; The second data transmission group corresponds to a second carrier group, and the data transmissions in the second data transmission group correspond one-to-one to the carriers in the second carrier group. A terminal device according to claim 51 or 52, wherein the type of transmission configuration information carried by the first information indication field and the second information indication field is the same. The terminal device according to claim 53, wherein the data transmission configuration includes at least one of the following: Frequency domain resources, time domain resources, new data indication, RV, modulation and decoding scheme, HARQ process number, power control parameters, PUCCH resources, and feedback timing. The terminal device according to any one of claims 51 to 54, wherein the first data transmission group or the second data transmission group includes at least one downlink data transmission; or The carrier in the first carrier group corresponding to the first data transmission group corresponds to a first PUCCH carrier, and the carrier in the second carrier group corresponding to the second data transmission group corresponds to a second PUCCH carrier; the first PUCCH carrier is the same as or different from the second PUCCH carrier. According to any one of claims 51 to 55, the terminal device, wherein the carriers in the first carrier group corresponding to the first data transmission group and the scheduling carrier are in the same bandwidth, and the carriers in the second carrier group corresponding to the second data transmission group and the scheduling carrier are in different bandwidths; wherein the scheduling carrier is the carrier that carries the first downlink control information. The terminal device according to any one of claims 51 to 56, wherein: The data transmission included in the first data transmission group is uplink data transmission, and the data transmission included in the second data transmission group is uplink data transmission; or, The data transmission included in the first data transmission group is uplink data transmission, and the data transmission included in the second data transmission group is downlink data transmission; or, The data transmission included in the first data transmission group is downlink data transmission, and the data transmission included in the second data transmission group is uplink data transmission; or, The data transmission included in the first data transmission group is downlink data transmission, and the data transmission included in the second data transmission group is downlink data transmission. The terminal device according to any one of claims 51 to 57, wherein: The first information indication field is a first frequency domain resource allocation field, and the first frequency domain resource allocation field is used to indicate the frequency domain resources corresponding to the data transmission in the first data transmission group; The second information indication field is a second frequency domain resource allocation field, and the second frequency domain resource allocation field is used to indicate the frequency domain resources corresponding to the data transmission in the second data transmission group. The terminal device according to any one of claims 51 to 57, wherein: The first information indication field is a first time domain resource allocation field, and the first time domain resource allocation field is used to indicate the time domain resources corresponding to the data transmission in the first data transmission group; The second information indication field is a second time domain resource allocation field, and the second time domain resource allocation field is used to indicate the time domain resources corresponding to the data transmission in the second data transmission group. The terminal device according to any one of claims 51 to 57, wherein: The first information indication field is a first new data indication field, and the first new data indication field is used to indicate whether the data transmission in the first data transmission group is a retransmission or an initial transmission; The second information indication field is a second new data indication field, and the second new data indication field is used to indicate whether the data transmission in the second data transmission group is a retransmission or an initial transmission. The terminal device according to any one of claims 51 to 57, wherein: The first information indication field is a first RV field, and the first RV field is used to indicate the RV corresponding to the data transmission in the first data transmission group; The second information indication field is a second RV field, and the second RV field is used to indicate the RV corresponding to the data transmission in the second data transmission group. The terminal device according to any one of claims 51 to 57, wherein: The first information indication field is a first process identifier indication field, and the first process identifier indication field is used to indicate the HARQ process number corresponding to the data transmission in the first data transmission group; The second information indication field is a second process identifier indication field, and the second process identifier indication field is used to indicate the HARQ process number corresponding to the data transmission in the second data transmission group. The terminal device according to any one of claims 51 to 57, wherein: The first information indication field is a first uplink control channel resource indication field, and the first uplink control channel resource indication field is used to indicate the PUCCH resources used for HARQ-ACK feedback corresponding to the data transmission in the first data transmission group; The second information indication field is a second uplink control channel resource indication field, and the second uplink control channel resource indication field is used to indicate the PUCCH resources used for HARQ-ACK feedback corresponding to the data transmission in the second data transmission group. The terminal device according to any one of claims 51 to 57, wherein: The first information indication field is a first feedback timing field, and the first feedback timing field is used to indicate the HARQ-ACK feedback timing corresponding to the data transmission in the first data transmission group; The second information indication field is a second feedback timing field, and the second feedback timing field is used to indicate the HARQ-ACK feedback timing corresponding to the data transmission in the second data transmission group. The terminal device according to any one of claims 51 to 57, wherein: The first information indication field is a first modulation and decoding field, and the first modulation and decoding field is used to indicate a modulation and decoding scheme used for data transmission in the first data transmission group; The second information indication field is a second modulation and decoding field, and the second modulation and decoding field is used to indicate a modulation and decoding scheme used for data transmission in the second data transmission group. The terminal device according to any one of claims 51 to 57, wherein: The first information indication field is a first power control parameter field, and the first power control parameter field is used to indicate a power control parameter used for data transmission in the first data transmission group; The second information indication field is a second power control parameter field, and the second power control parameter field is used to indicate a power control parameter used for data transmission in the second data transmission group. The terminal device according to any one of claims 49 to 66, further comprising: A second receiving unit is configured to receive a radio resource control RRC signaling, where the RRC signaling indicates a plurality of carriers, and the plurality of carriers include at least two carriers scheduled by the first downlink control information; and/or, The RRC signaling indicates a plurality of carrier groups, and the plurality of carrier groups include at least one of a first carrier group and a second carrier group scheduled by the first downlink control information. The terminal device according to claim 67, wherein the RRC signaling further indicates that the data transmission corresponding to the first carrier group is uplink data transmission or downlink data transmission; And/or, the RRC signaling further indicates that the data transmission corresponding to the second carrier group is uplink data transmission or downlink data transmission. The terminal device according to any one of claims 49 to 66, wherein the first downlink control information indicates a plurality of scheduled carriers; and/or The first downlink control information indicates at least one of a scheduled first carrier group and a scheduled second carrier group. The terminal device according to claim 69, wherein: The first downlink control information includes a first indication field and a second indication field; The first indication field is used to indicate whether data transmission corresponding to the first carrier group is uplink data transmission or downlink data transmission; The second indication field is used to indicate whether data transmission corresponding to the second carrier group is uplink data transmission or downlink data transmission. The terminal device according to claim 69, wherein: The first downlink control information includes a third indication field; The third indication field is used to indicate that the data transmission corresponding to the first carrier group is uplink data transmission or downlink data transmission, and the data transmission corresponding to the second carrier group is uplink data transmission or downlink data transmission. The terminal device according to any one of claims 67 to 70, further comprising: The first determining unit is configured to determine a first carrier group and/or a second carrier group scheduled by the first downlink control information according to PUCCH carriers corresponding to each carrier scheduled by the first downlink control information. The terminal device according to any one of claims 67 to 70, further comprising: The second determination unit is used to determine the first carrier group and/or the second carrier group scheduled by the first downlink control information according to whether each carrier scheduled by the first downlink control information is in the same bandwidth as the scheduled carrier; wherein the scheduled carrier is the carrier that carries the first downlink control information. A network device, comprising: The first sending unit is configured to send first downlink control information, where the first downlink control information is used to determine data transmission corresponding to at least two carriers. The network device according to claim 74, wherein the first downlink control information is used to determine at least two data transmissions corresponding to at least two carriers, and each carrier corresponds to one data transmission. The network device according to claim 74 or 75, wherein the first downlink control information includes a first information indication field and a second information indication field; Among the at least two data transmissions corresponding to the at least two carriers, a part of the data transmissions belongs to a first data transmission group, and another part of the data transmissions belongs to a second data transmission group; The first information indication field carries transmission configuration information of data transmission in the first data transmission group; The second information indication field carries transmission configuration information of data transmission in the second data transmission group. The network device according to claim 76, wherein: The first data transmission group corresponds to a first carrier group, and data transmissions in the first data transmission group correspond one-to-one to carriers in the first carrier group; The second data transmission group corresponds to a second carrier group, and the data transmissions in the second data transmission group correspond one-to-one to the carriers in the second carrier group. A network device according to claim 76 or 77, wherein the type of transmission configuration information carried by the first information indication field and the second information indication field is the same. The network device of claim 78, wherein the data transmission configuration comprises at least one of the following: Frequency domain resources, time domain resources, new data indication, RV, modulation and decoding scheme, HARQ process number, power control parameters, PUCCH resources, and feedback timing. The network device according to any one of claims 76 to 79, wherein the first data transmission group or the second data transmission group includes at least one downlink data transmission; or The carrier in the first carrier group corresponding to the first data transmission group corresponds to a first PUCCH carrier, and the carrier in the second carrier group corresponding to the second data transmission group corresponds to a second PUCCH carrier; the first PUCCH carrier is the same as or different from the second PUCCH carrier. A network device according to any one of claims 76 to 80, wherein the carriers in the first carrier group corresponding to the first data transmission group and the scheduling carrier are in the same bandwidth, and the carriers in the second carrier group corresponding to the second data transmission group and the scheduling carrier are in different bandwidths; wherein the scheduling carrier is a carrier that carries the first downlink control information. The network device according to any one of claims 76 to 81, wherein: The data transmission included in the first data transmission group is uplink data transmission, and the data transmission included in the second data transmission group is uplink data transmission; or, The data transmission included in the first data transmission group is uplink data transmission, and the data transmission included in the second data transmission group is downlink data transmission; or, The data transmission included in the first data transmission group is downlink data transmission, and the data transmission included in the second data transmission group is uplink data transmission; or, The data transmission included in the first data transmission group is downlink data transmission, and the data transmission included in the second data transmission group is downlink data transmission. The network device according to any one of claims 76 to 82, wherein: The first information indication field is a first frequency domain resource allocation field, and the first frequency domain resource allocation field is used to indicate the frequency domain resources corresponding to the data transmission in the first data transmission group; The second information indication field is a second frequency domain resource allocation field, and the second frequency domain resource allocation field is used to indicate the frequency domain resources corresponding to the data transmission in the second data transmission group. The network device according to any one of claims 76 to 82, wherein: The first information indication field is a first time domain resource allocation field, and the first time domain resource allocation field is used to indicate the time domain resources corresponding to the data transmission in the first data transmission group; The second information indication field is a second time domain resource allocation field, and the second time domain resource allocation field is used to indicate the time domain resources corresponding to the data transmission in the second data transmission group. The network device according to any one of claims 76 to 82, wherein: The first information indication field is a first new data indication field, and the first new data indication field is used to indicate whether the data transmission in the first data transmission group is a retransmission or an initial transmission; The second information indication field is a second new data indication field, and the second new data indication field is used to indicate whether the data transmission in the second data transmission group is a retransmission or an initial transmission. The network device according to any one of claims 76 to 82, wherein: The first information indication field is a first redundancy version field, and the first redundancy version field is used to indicate a redundancy version corresponding to data transmission in the first data transmission group; The second information indication field is a second redundancy version field, and the second redundancy version field is used to indicate a redundancy version corresponding to the data transmission in the second data transmission group. The network device according to any one of claims 76 to 82, wherein: The first information indication field is a first process identifier indication field, and the first process identifier indication field is used to indicate the HARQ process number corresponding to the data transmission in the first data transmission group; The second information indication field is a second process identifier indication field, and the second process identifier indication field is used to indicate the HARQ process number corresponding to the data transmission in the second data transmission group. The network device according to any one of claims 76 to 82, wherein: The first information indication field is a first uplink control channel resource indication field, and the first uplink control channel resource indication field is used to indicate the PUCCH resources used for HARQ-ACK feedback corresponding to the data transmission in the first data transmission group; The second information indication field is a second uplink control channel resource indication field, and the second uplink control channel resource indication field is used to indicate the PUCCH resources used for HARQ-ACK feedback corresponding to the data transmission in the second data transmission group. The network device according to any one of claims 76 to 82, wherein: The first information indication field is a first feedback timing field, and the first feedback timing field is used to indicate the HARQ-ACK feedback timing corresponding to the data transmission in the first data transmission group; The second information indication field is a second feedback timing field, and the second feedback timing field is used to indicate the HARQ-ACK feedback timing corresponding to the data transmission in the second data transmission group. The network device according to any one of claims 76 to 82, wherein: The first information indication field is a first modulation and decoding field, and the first modulation and decoding field is used to indicate a modulation and decoding scheme used for data transmission in the first data transmission group; The second information indication field is a second modulation and decoding field, and the second modulation and decoding field is used to indicate a modulation and decoding scheme used for data transmission in the second data transmission group. The network device according to any one of claims 76 to 82, wherein: The first information indication field is a first power control parameter field, and the first power control parameter field is used to indicate a power control parameter used for data transmission in the first data transmission group; The second information indication field is a second power control parameter field, and the second power control parameter field is used to indicate a power control parameter used for data transmission in the second data transmission group. The network device according to any one of claims 74 to 91, further comprising: a second sending unit, configured to send RRC signaling, where the RRC signaling indicates multiple carriers, and the multiple carriers include at least two carriers that can be scheduled by the first downlink control information; and/or, The RRC signaling indicates a plurality of carrier groups, and the plurality of carrier groups include at least one of a first carrier group and a second carrier group that can be scheduled by the first downlink control information. The network device according to claim 92, wherein the RRC signaling further indicates that the data transmission corresponding to the first carrier group is uplink data transmission or downlink data transmission; And/or, the RRC signaling further indicates that the data transmission corresponding to the second carrier group is uplink data transmission or downlink data transmission. The network device according to any one of claims 74 to 91, wherein the first downlink control information indicates a plurality of scheduled carriers; and/or, The first downlink control information indicates at least one of a scheduled first carrier group and a scheduled second carrier group. The network device according to claim 94, wherein: The first downlink control information includes a first indication field and a second indication field; The first indication field is used to indicate whether data transmission corresponding to the first carrier group is uplink data transmission or downlink data transmission; The second indication field is used to indicate whether data transmission corresponding to the second carrier group is uplink data transmission or downlink data transmission. The network device according to claim 94, wherein: The first downlink control information includes a third indication field; The third indication field is used to indicate that the data transmission corresponding to the first carrier group is uplink data transmission or downlink data transmission, and the data transmission corresponding to the second carrier group is uplink data transmission or downlink data transmission. A terminal device comprises: a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory so that the terminal device executes the method as described in any one of claims 1 to 25. A network device comprises: a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory so that the network device executes the method as described in any one of claims 26 to 48. A chip comprises: a processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes a method as claimed in any one of claims 1 to 25. A chip comprises: a processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes a method as claimed in any one of claims 26 to 48. A computer-readable storage medium for storing a computer program, wherein when the computer program is executed by a device, the device executes the method according to any one of claims 1 to 25. A computer-readable storage medium for storing a computer program, which, when executed by a device, causes the device to perform the method as claimed in any one of claims 26 to 48. A computer program product comprises computer program instructions, wherein the computer program instructions enable a computer to execute the method according to any one of claims 1 to 25. A computer program product comprising computer program instructions, the computer program instructions causing a computer to execute the method as claimed in any one of claims 26 to 48. A computer program, the computer program causing a computer to execute the method according to any one of claims 1 to 25. A computer program, the computer program causing a computer to execute the method according to any one of claims 26 to 48. A communication system, comprising: A terminal device, configured to execute the method according to any one of claims 1 to 25; A network device, configured to execute the method according to any one of claims 26 to 48.