Method for indicating time domain resource and communication device

Abstract

Provided are a method for indicating a time domain resource and a communication device, the method comprising: in a scenario in which multi-cell scheduling is implemented through a single DCI, a network device sends configuration information to a terminal device, the configuration information indicating a time domain resource allocation list, one element in the time domain resource allocation list indicates time domain allocation information in M BWPs in K cells, # imgabs0 # Mi is the total number of BWPs, which can be indicated by a BWP indication field, in the ith cell in the K cells, and the BWP indication field is a field in DCI (Downlink Control Information) for multi-cell scheduling. Therefore, the terminal equipment can obtain the time domain resource allocation information of the BWP indicated by the BWP indication field based on the BWP indication field and the time domain resource allocation list, and the efficiency of indicating the time domain resource of the data channel is improved in a scene of realizing multi-cell scheduling through a single DCI.

Description

Technical Field

[0001] Embodiments of the present application relate to the field of communications, and more specifically, to a method and a communication device for indicating time domain resources. Background Art

[0002] Carrier aggregation (CA) technology in the new radio (NR) communication system is used to increase the transmission bandwidth of a single user. Specifically, carrier aggregation technology can realize multi-frequency resource integration, aggregate spectrum resources of the same frequency band or different frequency bands for terminal use, thereby improving the utilization rate of the entire network resources and improving user experience. Exemplarily, by merging the information in multiple downlink control information (DCI), it is possible to simultaneously schedule multiple physical downlink shared channels (PDSCH) on multiple carriers through a single DCI (single DCI).

[0003] In a current multi-cell scheduling solution, the time domain resource information of the corresponding PDSCH on different carriers is indicated by pre-configuring a time domain resource allocation (TDRA) table. However, the TDRA table may cause the time domain resource information of some bandwidth parts (BWP) to be unable to be indicated. Therefore, how to configure a suitable TDRA table to implement time domain resource indication in the scenario of multi-cell scheduling through a single DCI has become an urgent problem to be solved. Summary of the invention

[0004] The present application provides a method for indicating time domain resources, in order to improve the efficiency of indicating time domain resources of a data channel in a scenario where multi-cell scheduling is implemented through a single DCI.

[0005] In a first aspect, a method for indicating time domain resources is provided. The method may be executed by a terminal device, or may be executed by a component of the terminal device (eg, a chip or a circuit or a chip system). For ease of understanding, the following description is taken as an example of execution by a terminal device.

[0006] The method for indicating time domain resources includes: a terminal device receives first configuration information from a network device, and the first configuration information is used to indicate a first time domain resource allocation list. Specifically, the first time domain resource allocation list includes at least one element, and the at least one element includes a first element, and the first element indicates time domain resource allocation information (such as a time domain resource allocation index) of M BWPs in K cells, K and M are positive integers, and M is greater than or equal to K, M i is the total number of BWPs that can be indicated by the BWP indication field in the i-th cell among the K cells. The BWP indication field is a field in the DCI used for multi-cell scheduling. i is a positive integer, and i is an integer less than or equal to K. Furthermore, the terminal device also receives a first DCI from the network device, and the first DCI is used to schedule data channels in C (C is a positive integer less than or equal to K) cells to implement multi-cell scheduling. The first DCI includes a BWP indication field, and the BWP indication field is used to indicate C BWPs in C cells, and the C BWPs correspond to the C cells one by one, that is, the BWP indication field indicates a BWP in each of the C cells.

[0007] Based on the above technical solution, the time domain resource allocation information corresponding to the BWP that can be indicated by the BWP indication field can be determined based on the first time domain resource allocation list configured by the network device, thereby avoiding the time domain resource allocation information of some BWPs indicated by the BWP indication field being unavailable. And it will not cause the BWP indicated by the elements in the first time domain resource allocation list to be unable to be indicated by the BWP indication field, resulting in redundancy of time domain resource allocation information, thereby avoiding increasing signaling overhead. Thereby, the efficiency of indicating the time domain resources of the data channel is improved in the scenario of multi-cell scheduling through a single DCI.

[0008] In combination with the first aspect, in certain implementations of the first aspect, the first DCI also includes a time domain resource allocation field, a modulated cell set indication field and a modulated cell indication field, the time domain resource allocation field indicates a first element, the modulated cell set indication field indicates a first cell set, the modulated cell indication field indicates C cells in the first cell set, and the method also includes: the terminal device determines the time domain resource allocation information corresponding to C BWPs in the C cells respectively according to the first element.

[0009] In combination with the first aspect, in certain implementations of the first aspect, when the number of BWPs configured on the second cell among the C cells is greater than 2, and the number of BWPs configured on the first cell among the C cells is less than or equal to 2, the bit width of the BWP indication field is 2 bits, and the method also includes: determining the first BWP of the first cell according to the value of the least significant bit of the BWP indication field.

[0010] Based on the above technical solution, assuming that the number of BWPs configured in the first cell of the above C cells is less than or equal to 2, when the terminal device of the first cell parses the BWP indication field to determine the first cell BWP indicated by the BWP indication field, it can be determined based on the lowest bit in the BWP indication field to avoid parsing errors in the BWP indication field. That is, in the scenario where the number of BWPs configured in the cell is different, the BWP indication field can be used to indicate the BWPs in different cells through the BWP indication field through a flexible parsing method of the terminal device, supporting different numbers of BWPs configured in different cells, thereby improving the flexibility of the solution.

[0011] In combination with the first aspect, in certain implementations of the first aspect, when the BWP of the first cell among the C cells indicated by the BWP indication field is a BWP that is not configured for the first cell, or the BWP of the first cell indicated by the BWP indication field is a BWP in a dormant state, the method also includes: determining not to receive or send data on the first cell; or determining to use an activated BWP for data transmission on the first cell.

[0012] Based on the above technical solution, when the BWP indicated by the BWP indication field does not exist in the first cell or is in a dormant state in the first cell, the terminal device may not transmit data on the first cell, or the terminal device may choose to activate the BWP for data transmission to avoid data transmission failure.

[0013] In a second aspect, a method for indicating time domain resources is provided. The method may be performed by a network device, or by a component of the network device (e.g., a chip or a circuit or a chip system). For ease of understanding, the following description is taken as an example of execution by a terminal device.

[0014] The method for indicating time domain resources includes: a network device sends first configuration information to a terminal device, and the first configuration information is used to indicate a first time domain resource allocation list. Specifically, the first time domain resource allocation list includes at least one element, and the at least one element includes a first element, and the first element indicates time domain resource allocation information (such as a time domain resource allocation index) of M BWPs in K (cells), K and M are positive integers, and M is greater than or equal to K, M iis the total number of BWPs that can be indicated by the BWP indication field in the i-th cell among the K cells. The BWP indication field is a field in the DCI used for multi-cell scheduling. Furthermore, the network device also sends a first DCI to the terminal device, and the first DCI is used to schedule data channels in C (C is a positive integer less than or equal to K) cells to achieve multi-cell scheduling. The first DCI includes a BWP indication field, and the BWP indication field is used to indicate C BWPs in C cells. The C BWPs correspond to the C cells one by one, that is, the BWP indication field indicates a BWP in each of the C cells.

[0015] In combination with the first aspect or the second aspect, in certain implementations of the first aspect or the second aspect, the first element is i The BWP logos of the BWPs indicate M in order from small to large. i Time domain resource allocation information in a BWP.

[0016] In combination with the first aspect or the second aspect, in certain implementations of the first aspect or the second aspect, the i-th cell is configured with N i BWP, N i is greater than M i An integer.

[0017] In combination with the first aspect or the second aspect, in certain implementations of the first aspect or the second aspect, assuming that the first cell among the C cells is configured with 4 dedicated BWPs in addition to the initial BWP, different values ​​of the BWP indication field indicate 4 dedicated BWPs, and different values ​​of the BWP indication field correspond one-to-one to the 4 dedicated BWPs.

[0018] In combination with the first aspect or the second aspect, in certain implementations of the first aspect or the second aspect, assuming that the second cell among the C cells is configured with three dedicated BWPs in addition to the initial BWP, different values ​​of the BWP indication field indicate the initial BWP and the three dedicated BWPs, and different values ​​of the BWP indication field correspond one-to-one to the initial BWP and the three dedicated BWPs.

[0019] In a third aspect, a method for indicating time domain resources is provided. The method may be executed by a terminal device, or may be executed by a component of the terminal device (e.g., a chip or a circuit or a chip system). For ease of understanding, the following description is taken as an example of execution by a terminal device.

[0020] The method for indicating time domain resources includes: a terminal device receives second configuration information from a network device, and the second configuration information is used to indicate a second time domain resource allocation list. Specifically, the second time domain resource allocation list includes at least one element, and the at least one element includes a second element, and the second element indicates time domain resource allocation information (such as a time domain resource allocation index) of M BWPs in K cells, K and M are positive integers, and M is greater than or equal to K, M i is the total number of BWPs configured in the i-th cell among the K cells, M i is a positive integer, and i is an integer less than or equal to K. Furthermore, the terminal device also receives a second DCI from the network device, and the second DCI is used to schedule data channels in C (C is a positive integer less than or equal to K) cells to implement multi-cell scheduling. The second DCI includes a BWP indication field, and the BWP indication field is used to indicate C BWPs in C cells, and the C BWPs correspond to the C cells one by one, that is, the BWP indication field indicates a BWP in each of the C cells.

[0021] Based on the above technical solution, the time domain resource allocation information corresponding to the BWP configured in each of the K cells can be determined based on the second time domain resource allocation list configured by the network device, thereby avoiding the inability to obtain the time domain resource allocation information of some BWPs, and improving the efficiency of the time domain resources indicating the data channel in the scenario of multi-cell scheduling through a single DCI.

[0022] In combination with the third aspect, in certain implementations of the third aspect, the second DCI also includes a time domain resource allocation field, a modulated cell set indication field and a modulated cell indication field, the time domain resource allocation field indicates a second element, the modulated cell set indication field indicates a second cell set, the modulated cell indication field indicates C cells in the second cell set, and the method also includes: the terminal device determines the time domain resource allocation information corresponding to the C BWPs in the C cells according to the second element.

[0023] In combination with the third aspect, in certain implementations of the third aspect, when the number of BWPs configured for the first cell among the C cells is less than or equal to 2, the method further includes: determining the first BWP of the first cell according to the value of the least significant bit of the BWP indication field.

[0024] In combination with the third aspect, in certain implementations of the third aspect, when the BWP of the first cell among the C cells indicated by the BWP indication field is a BWP that is not configured for the first cell, or the BWP of the first cell indicated by the BWP indication field is a BWP in a dormant state, the method also includes: determining not to receive or send data on the first cell; or determining to use an activated BWP for data transmission on the first cell.

[0025] In a fourth aspect, a method for indicating time domain resources is provided. The method can be performed by a network device, or by a component of the network device (such as a chip or a circuit or a chip system). For ease of understanding, the following description is taken as an example of execution by a terminal device.

[0026] The method for indicating time domain resources includes: a network device sends second configuration information to a terminal device, the second configuration information is used to indicate a second time domain resource allocation list. Specifically, the second time domain resource allocation list includes at least one element, the at least one element includes a second element, the second element indicates time domain resource allocation information (such as a time domain resource allocation index) of M BWPs in K cells, K and M are positive integers, and M is greater than or equal to K, M i is the total number of BWPs configured in the i-th cell among the K cells, M i is a positive integer, and i is an integer less than or equal to K. Furthermore, the network device also sends a second DCI to the terminal device, and the second DCI is used to schedule data channels in C (C is a positive integer less than or equal to K) cells to achieve multi-cell scheduling. The first DCI includes a BWP indication field, and the BWP indication field is used to indicate C BWPs in C cells, and the C BWPs correspond to the C cells one by one, that is, the BWP indication field indicates a BWP in each of the C cells.

[0027] In combination with the third aspect or the fourth aspect, in certain implementations of the third aspect or the fourth aspect, the second element is i The BWP logos of the BWPs indicate M in order from small to large. i Time domain resource allocation information in a BWP.

[0028] In a fifth aspect, a communication device is provided, which is used to execute the method provided by any one of the above aspects or its implementation. Specifically, the device may include units and / or modules, such as a processing unit and / or a communication unit, for executing the method provided by any one of the above aspects or its implementation.

[0029] In one implementation, the device is the above-mentioned terminal device or network device. When the device is a terminal device or a network device, the communication unit may be a transceiver, or an input / output interface, or a communication interface; the processing unit may be at least one processor. Optionally, the transceiver is a transceiver circuit. Optionally, the input / output interface is an input / output circuit.

[0030] In another implementation, the device is a chip, a chip system or a circuit used in a terminal device or a network device. When the device is a chip, a chip system or a circuit used in a terminal device or a network device, the communication unit may be an input / output interface, an interface circuit, an output circuit, an input circuit, a pin or a related circuit on the chip, the chip system or the circuit; the processing unit may be at least one processor, a processing circuit or a logic circuit.

[0031] In a sixth aspect, a communication method is provided. The method may be executed by a terminal device, or may be executed by a component of the terminal device (eg, a chip or a circuit or a chip system). For ease of understanding, the following description is taken as an example of execution by a terminal device.

[0032] The communication method includes: a terminal device receives third configuration information from a network device, and the third configuration information is used to indicate a scheduling cell list. Specifically, the scheduling cell list includes at least one element, and at least one element includes a third element, and the third element indicates a cell scheduled by a DCI for multi-cell scheduling. Furthermore, the terminal device also receives a third DCI from a network device, and the third DCI is used to schedule data channels in C (C is an integer greater than or equal to 1) cells to implement multi-cell scheduling. The third DCI includes a scheduling cell indication field and a frequency domain information indication field, wherein the scheduling cell indication field is used to indicate the C cells, and the C cells are the cells indicated by the third element in the above-mentioned scheduling cell list, and the frequency domain information indication field is used to indicate the frequency domain information corresponding to each of the C cells. The terminal device determines the cells in the C cells that cannot be scheduled by the third DCI based on the frequency domain information corresponding to each of the C cells.

[0033] Based on the above technical solution, in the scenario where multi-cell scheduling is implemented through a single DCI, the terminal device can determine whether a cell is scheduled based on the value of the frequency domain information indication field corresponding to different cells carried in a single DCI. Therefore, without increasing the size of a single DCI, the terminal device can determine the cells that cannot be scheduled among the multiple cells scheduled by a single DCI by parsing the frequency domain information indication field in a single DCI, thereby avoiding invalid scheduling when a cell has no frequency domain resources, and improving the flexibility of implementing multi-cell scheduling with a single DCI.

[0034] In combination with the sixth aspect, in certain implementations of the sixth aspect, the terminal device determines, according to the frequency domain information corresponding to each cell in the C cells, a cell that cannot be scheduled by the third DCI in the C cells, including:

[0035] When the frequency domain resource allocation mode corresponding to the third cell among the C cells is type 0, and all bits of the frequency domain information indication field corresponding to the third cell are set to 0, the terminal device determines that the third cell cannot be scheduled by the third DCI; or,

[0036] When the frequency domain resource allocation mode corresponding to the third cell among the C cells is type 1, and all bits of the frequency domain information indication field corresponding to the third cell are set to 1, the terminal device determines that the third cell cannot be scheduled by the third DCI; or,

[0037] When the frequency domain resource allocation mode corresponding to the third cell among the C cells is a dynamically switched resource allocation mode, and all bits of the frequency domain information indication field corresponding to the third cell are set to 1 or 0, the terminal device determines that the third cell cannot be scheduled by the third DCI.

[0038] Based on the above technical solution, the terminal device can determine the cells that cannot be scheduled among the C cells in different ways, thereby improving the flexibility of the solution.

[0039] In a seventh aspect, a communication device is provided, comprising: a memory for storing programs; and at least one processor for executing computer programs or instructions stored in the memory to execute the method provided by any one of the above aspects or its implementation.

[0040] In one implementation, the apparatus is a terminal device or a network device.

[0041] In another implementation, the device is a chip, a chip system or a circuit used in a terminal device or a network device.

[0042] In an eighth aspect, a communication device is provided, the device comprising: at least one processor and a communication interface, the at least one processor is used to obtain a computer program or instruction stored in a memory through the communication interface to execute the method provided by any one of the above aspects or its implementation. The communication interface can be implemented by hardware or software.

[0043] In one implementation, the device further includes a memory.

[0044] In a ninth aspect, a processor is provided for executing the methods provided in the above aspects.

[0045] For the operations such as sending and acquiring / receiving involved in the processor, if there is no special explanation, or if it does not conflict with its actual function or internal logic in the relevant description, then it can be understood as operations such as processor output and reception, input, etc., and can also be understood as sending and receiving operations performed by the radio frequency circuit and antenna. This application does not limit this.

[0046] In a tenth aspect, a computer-readable storage medium is provided, which stores a program code for execution by a device, wherein the program code includes a method for executing any one of the above aspects or its implementation.

[0047] In an eleventh aspect, a computer program product comprising instructions is provided, which, when executed on a computer, enables the computer to execute the method provided by any one of the above aspects or its implementation.

[0048] In a twelfth aspect, a chip is provided, the chip comprising a processor and a communication interface, the processor reads instructions stored in a memory through the communication interface, and executes the method provided by any one of the above aspects or its implementation. The communication interface can be implemented by hardware or software.

[0049] Optionally, as an implementation method, the chip also includes a memory, in which a computer program or instructions are stored, and the processor is used to execute the computer program or instructions stored in the memory. When the computer program or instructions are executed, the processor is used to execute the method provided by any one of the above aspects or its implementation methods.

[0050] Among them, when the method provided by the present application is executed by a chip, the present application does not limit the number of chips that specifically implement the method of the present application. For example, it can be executed by one chip or by two or more chips. Moreover, when the number of chips that implement the method of the present application is two or more, the chip manufacturers are not limited and can be the same manufacturer or different manufacturers.

[0051] In a thirteenth aspect, a computer program is provided, which, when executed on a computer, enables the method provided by any one of the above aspects or its implementation to be executed.

[0052] In a fourteenth aspect, a communication system is provided, comprising the above-mentioned terminal device and network device. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 It is a schematic diagram of the architecture of the communication system 1000 applied in the embodiment of the present application.

[0054] Figure 2 is a schematic diagram of carrier aggregation.

[0055] Figure 3 It is a schematic diagram of the self-carrier scheduling method.

[0056] Figure 4 It is a schematic diagram of the cross-carrier scheduling method.

[0057] Figure 5 It is a schematic diagram of the BWP included in the carrier.

[0058] Figure 6 It is a schematic diagram of multi-cell scheduling.

[0059] Figure 7 It is a schematic flowchart of a method for indicating time domain resources provided by an embodiment of the present application.

[0060] Figure 8 It is a schematic flowchart of another method for indicating time domain resources provided by an embodiment of the present application.

[0061] Fig. 9 It is a schematic flow chart of a communication method provided in an embodiment of the present application.

[0062] Fig.10 It is a schematic diagram of a communication device provided in an embodiment of the present application.

[0063] Fig.11 It is a schematic diagram of another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0064] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0065] Figure 1 FIG. 1 is a schematic diagram of the architecture of a communication system 1000 used in an embodiment of the present application. Figure 1 As shown, the communication system includes a wireless access network 100 and a core network 200. Optionally, the communication system 1000 may also include the Internet 300. The wireless access network 100 may include at least one wireless access network device (such as Figure 1 110a and 110b), and may further include at least one terminal (such as Figure 1 120a-120j in the figure). The terminal is connected to the wireless access network device by wireless means, and the wireless access network device is connected to the core network by wireless or wired means. The core network device and the wireless access network device can be independent and different physical devices, or the functions of the core network device and the logical functions of the wireless access network device can be integrated on the same physical device, or part of the functions of the core network device and part of the functions of the wireless access network device can be integrated on one physical device. Terminals and wireless access network devices can be connected to each other by wired or wireless means. Figure 1 This is just a schematic diagram. The communication system may also include other network devices, such as wireless relay devices and wireless backhaul devices. Figure 1 Not drawn in.

[0066] Radio access network equipment is the access equipment that terminals use to access the communication system wirelessly. Radio access network equipment can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next generation NodeB (gNB) in the fifth generation (5G) mobile communication system, a next generation base station in the sixth generation (6G) mobile communication system, a base station in a future mobile communication system, etc.; it can also be a module or unit that completes part of the functions of a base station, for example, a centralized unit (CU) or a distributed unit (DU). The CU here completes the functions of the radio resource control protocol and the packet data convergence protocol (PDCP) of the base station, and can also complete the function of the service data adaptation protocol (SDAP); the DU completes the functions of the radio link control layer and the medium access control (MAC) layer of the base station, and can also complete the functions of part of the physical layer or all of the physical layer. For the specific description of the above-mentioned protocol layers, please refer to the relevant technical specifications of the 3rd Generation Partnership Project (3GPP).

[0067] In different systems, CU (or CU-CP and CU-UP), DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, the radio access network may also be an open radio access network (O-RAN) architecture. In the ORAN system, CU may also be called O-CU (open CU), DU may also be called O-DU, CU-CP may also be called O-CU-CP, CU-UP may also be called O-CU-UP, and RU may also be called O-RU. Any unit in the CU (or CU-CP, CU-UP), DU and RU in this application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0068] The wireless access network device may be a macro base station (such as Figure 1 110a), or a micro base station or an indoor station (such as Figure 1110b), may also be a relay node or a donor node, etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the wireless access network device. For ease of description, network device is used as the abbreviation of wireless access network device, and base station is used as an example of wireless access network device.

[0069] A terminal is a device with wireless transceiver function, which can send signals to a base station or receive signals from a base station. A terminal can also be called a terminal device, user equipment (UE), a mobile station, a mobile terminal, etc. The terminal can be widely used in various scenarios, for example, device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IOT), virtual reality, augmented reality, industrial control, automatic driving, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc. The terminal can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a wearable device, a vehicle, an airplane, a ship, a robot, a mechanical arm, a smart home device, etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal.

[0070] Base stations and terminals can be fixed or movable. Base stations and terminals can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on the water surface; they can also be deployed on airplanes, balloons, and artificial satellites. The embodiments of this application do not limit the application scenarios of base stations and terminals.

[0071] The roles of the base station and the terminal can be relative, for example, Figure 1 The helicopter or drone 120i in the figure can be configured as a mobile base station. For the terminal 120j that accesses the wireless access network 100 through 120i, the terminal 120i is a base station; but for the base station 110a, 120i is a terminal, that is, 110a and 120i communicate through the wireless air interface protocol. Of course, 110a and 120i can also communicate through the interface protocol between base stations. In this case, relative to 110a, 120i is also a base station. Therefore, base stations and terminals can be collectively referred to as communication devices. Figure 1 110a and 110b in the figure may be referred to as communication devices having base station functions. Figure 1 120a-120j in the figure can be called communication devices with terminal functions.

[0072] Base stations and terminals, base stations and base stations, and terminals and terminals can communicate through authorized spectrum, unauthorized spectrum, or both; they can communicate through spectrum below 6 gigahertz (GHz), spectrum above 6 GHz, or spectrum below 6 GHz and spectrum above 6 GHz. The embodiments of the present application do not limit the spectrum resources used for wireless communication.

[0073] In the embodiments of the present application, the functions of the base station may also be performed by a module (such as a chip) in the base station, or by a control subsystem including the base station function. The control subsystem including the base station function here may be a control center in the above-mentioned application scenarios such as smart grid, industrial control, smart transportation, and smart city. The functions of the terminal may also be performed by a module (such as a chip or a modem) in the terminal, or by a device including the terminal function.

[0074] In this application, the base station sends a downlink signal or downlink information to the terminal, and the downlink information is carried on the downlink channel; the terminal sends an uplink signal or uplink information to the base station, and the uplink information is carried on the uplink channel. In order to communicate with the base station, the terminal needs to establish a wireless connection with the cell controlled by the base station. The cell with which the terminal has established a wireless connection is called the service cell of the terminal. When the terminal communicates with the service cell, it will also be interfered by signals from neighboring cells.

[0075] In this document, PDSCH, physical downlink control channel (physical downlink control channel, PDCCH) and physical uplink shared channel (physical uplink share channel, PUSCH) are just examples of downlink data channel, downlink control channel and uplink data channel respectively. In different systems and different scenarios, data channels and control channels may have different names, and the embodiments of the present application do not limit this.

[0076] To facilitate understanding of the embodiments of the present application, some basic concepts involved in the present application are briefly described.

[0077] 1. Cell: It is a set of resources managed by the base station, including frequency domain resources and spatial domain resources. The frequency domain resources of the cell include uplink frequency domain resources and / or downlink frequency domain resources; the spatial domain resources of the cell can be the spatial domain resources corresponding to a beam or a group of beams, which can also be understood as a cell corresponding to a specific physical coverage area. In an embodiment of the present application, different cells can be managed by different base stations. For example, cell #1 and cell #2 can be managed by different base stations. In this case, it can be said that cell #1 and cell #2 do not share the same station. Cell #1 and cell #2 can also be managed by the same base station and have the same baseband processing unit and / or radio frequency processing unit. This application does not limit this.

[0078] It should be noted that there is a one-to-one correspondence between cells and carriers, and cells and carriers can be used interchangeably. In other words, the frequency band range of a cell can be understood as the frequency band range of the frequency of the cell's corresponding carrier, and can also be called the cell's working frequency band or the cell's frequency band.

[0079] 2. Carrier aggregation (CA): It is to aggregate two or more component carriers (CC) together to support a larger transmission bandwidth. The CA technology in NR is used to increase the transmission bandwidth of a single user. Specifically, carrier aggregation technology can realize multi-frequency resource integration. For example, through CA technology, spectrum resources in the same frequency band or different frequency bands can be aggregated and provided to terminals for use, thereby improving the utilization rate of the entire network resources and improving the user experience.

[0080] For ease of understanding, combined Figure 2 Briefly introduce CA technology. Figure 2 It can be seen that the carrier component corresponding to cell #1, the carrier component corresponding to cell #2 and the carrier component corresponding to cell #3 are aggregated together to provide services for the terminal, where cell #1 is the primary cell (PCell), and cells #2 and #3 are secondary cells (SCell). Among them, PCell is the cell where the terminal establishes an initial connection, or the cell where the radio resource control (RRC) connection is reestablished. PCell is responsible for RRC communication with the terminal, and the carrier component corresponding to PCell is called the primary component carrier (PCC) (such as Figure 2The PCC shown in the figure), the downlink carrier of PCell is called DL PCC, and the uplink carrier of PCell is called UL PCC; SCell is added during RRC reconfiguration to provide additional wireless resources. There is no RRC communication between SCell and UE. The carrier unit corresponding to SCell is called secondary component carrier (SCC) (as shown in the figure). Figure 2 The downlink carrier of the SCell is called a DL SCC, and the uplink carrier of the SCell is called a UL SCC.

[0081] 3. Downlink control information (DCI): The network device sends DCI to the terminal device through the PDCCH. The downlink control information includes the scheduling information of the data channel. Based on the scheduling information, the network device and the terminal device perform data transmission through the data channel.

[0082] Exemplarily, the downlink control information includes, but is not limited to: control information related to data transmission (e.g., resource allocation information for data transmission, format information of uplink / downlink resources in a time slot), power control information of data channels and signals, information on dynamic time slot configuration, resource preemption information, etc. After detecting the control information, the terminal can send and receive data or perform corresponding operations according to the control information.

[0083] Optionally, if the network device wants to schedule PDSCH or PUSCH transmissions of the terminal simultaneously on multiple carriers, it needs to send multiple DCIs for scheduling, and each carrier needs one DCI for scheduling. According to the carrier that sends the DCI, there are two methods: self-carrier scheduling and cross-carrier scheduling.

[0084] For ease of understanding, combined Figure 3 and Figure 4 Briefly introduce the carrier scheduling method. Figure 3 As shown, when the self-carrier scheduling method is used, the DCI for scheduling PDSCH or PUSCH transmission on a carrier is also sent on the carrier, such as Figure 3 As shown in FIG, DCI#1 for scheduling PDSCH or PUSCH transmission on CC#1 is sent on the CC#1, and DCI#2 for scheduling PDSCH or PUSCH transmission on CC#2 is sent on the CC#2. Figure 4 As shown in the figure, when the cross-carrier scheduling method is used, the DCI for scheduling the transmission of PDSCH or PUSCH on one carrier can be sent on another carrier, so that the effect of sending DCI on only one carrier is achieved. Figure 4As shown in FIG, DCI#1 for scheduling PDSCH or PUSCH transmission on CC#1 is sent on the CC#1, and DCI#2 for scheduling PDSCH or PUSCH transmission on CC#2 is also sent on CC#1.

[0085] 4. Bandwidth part (BWP): A BWP is a continuous frequency resource on a carrier. A carrier can have one or more BWPs. The bandwidth of a BWP in a carrier is less than or equal to the bandwidth of the carrier. When a BWP is configured and activated, it is called an activated BWP.

[0086] Exemplarily, a terminal has an active downlink BWP on a downlink carrier and an active uplink BWP on an uplink carrier. Generally speaking, uplink data and control information sent by the terminal are sent in the uplink active BWP, and downlink data and control information are received in the downlink active BWP.

[0087] For ease of understanding, combined Figure 5 Briefly introduce the form of a carrier including BWP. Figure 5 It can be seen that three BWPs are configured in a 50MHz carrier, namely BWP#1, BWP#2 and BWP#3. The bandwidth of BWP#1 is 25MHz, the bandwidth of BWP#2 is 10MHz, and the bandwidth of BWP#3 is 50MHz. Among them, the activated BWP can be BWP#2.

[0088] 5. BWP identity (ID): A terminal supports up to 4 terminal-dedicated BWPs (UE-dedicated BWPs), where UE-dedicated BWPs are configured using UE-specific RRC signaling. In addition, the terminal is also configured with an initial downlink BWP (Initial DL BWP) and an initial uplink BWP (Initial UL BWP). Therefore, a terminal can have 5 BWPs configured by high-level signaling in the uplink and downlink respectively. Initial DL BWP and Initial UL BWP are not UE-dedicated BWPs configured by RRC dedicated signaling. The UE-dedicated BWPs configured by RRC dedicated signaling are up to 4 in the uplink and 4 in the downlink.

[0089] The value of the BWP identifier BWP ID is [0, 1, ..., 4], that is, 5 BWP numbers are supported, where BWP ID=0 indicates Initial DL BWP or Initial UL BWP, and BWP ID=1~4 indicates 4 UE-dedicated BWPs configured by RRC signaling.

[0090] 6. BWP Indicator: A 2-bit BWP Indicator is used in DCI to indicate different BWPs. If RRC signaling configures BWP in uplink or downlink, the BWP Indicator field in DCI exists; if RRC signaling does not configure BWP, the available BWP is Initial BWP, in which case the length of BWP Indicator is 0; if RRC signaling configures BWP in uplink or downlink, and if scheduling is performed in the currently activated BWP, the BWP ID of the currently activated BWP needs to be filled in the BWP Indicator.

[0091] As mentioned above, the length of the BWP Indicator in the DCI is 2 bits, and the 2-bit BWP Indicator cannot indicate any one of the 5 BWPs. Optionally, the scheduling of indicating the Initial BWP is supported when the configured UE-dedicated BWP is not greater than 3. The UE needs to determine which of the following two corresponding relationships to adopt based on the number of UE-dedicated BWPs configured in the RRC signaling.

[0092] One correspondence is: when the number of UE-dedicated BWPs is less than or equal to 3, the correspondence between BWP indicator and BWPID is shown in Table 1 below:

[0093] Table 1

[0094] category BWP ID BWP indicator Initial BWP 0 00 UE-dedicated BWP 1 1 01 UE-dedicated BWP 2 2 10 UE-dedicated BWP 3 3 11

[0095] Another corresponding relationship is: when the number of UE-dedicated BWPs is equal to 4, the corresponding relationship between BWP indicator and BWPID is shown in Table 2 below:

[0096] Table 2

[0097] category BWP ID BWP indicator UE-dedicated BWP 1 1 00 UE-dedicated BWP 2 2 01 UE-dedicated BWP 3 3 10 UE-dedicated BWP 4 4 11

[0098] 7. Time domain resource allocation (TDRA): In order to receive PDSCH, the terminal first decodes PDCCH. The DCI carried in PDCCH specifies how to transmit PDSCH on the air interface. DCI indicates the time domain resource information occupied by PDSCH through the TDRA field.

[0099] Exemplarily, the network device configures a corresponding TDRA table for each PDSCH through RRC signaling. The configuration granularity is at the level of each PDSCH / PUSCH on each BWP of each CC. Each row corresponds to a different TDRA configuration. The specific time domain resource information includes mapping type (mapping Type), start and length indicator value (Start and lengthindicator value, SLIV) information and k0 information, wherein the mapping Type includes Type-A and Type-B. The SLIV information is used to indicate the starting symbol position and symbol length of the PDSCH in a time slot (slot), and the k0 information is used to indicate the time slot interval between the PDCCH channel and the corresponding scheduled PDSCH channel.

[0100] Optionally, for DCI scheduling a single carrier, a configuration method of a TDRA table is shown in Table 3 below.

[0101] Table 3

[0102] Index k0 SLIV Mapping Type 0 2 <![CDATA[SLIV1]]> Type-A 1 0 <![CDATA[SLIV2]]> Type-A 2 1 <![CDATA[SLIV3]]> Type-B …… …… …… ……

[0103] The DCI mainly indicates the time domain information corresponding to the currently transmitted PDSCH by indicating the index information of the TDRA table. For example, the DCI indicates the configuration that the Index in the TDRA table is 2.

[0104] 8. Multi-cell scheduling: The information in multiple DCIs is combined so that a single DCI (singleDCI) can be used to schedule multiple PDSCH / PUSCH on multiple carriers at the same time, which is called multi-carrier scheduling (or multi-cell scheduling). Carriers scheduled by the same single DCI belong to the same co-scheduled cell set.

[0105] For ease of understanding, combined Figure 6 Briefly introduce multi-cell scheduling technology. Figure 6 It can be seen from the figure that the transmission of PDSCH#1 on CC#1 and the transmission of PDSCH#2 on CC#2 are transmitted by the same DCI (such as Figure 6 Single DCI) scheduling shown in .

[0106] Combination of the above Figure 1The present invention briefly introduces the scenarios in which the method for indicating time domain resources provided in the embodiments of the present application can be applied, as well as the basic concepts that may be involved in the embodiments of the present application. TDRA and multi-cell scheduling are introduced in the basic concepts. In particular, the single DCI also indicates the time domain resource information of the corresponding PDSCH on different CCs by pre-configuring the TDRA table.

[0107] Exemplarily, the network device configures a joint TDRA table through RRC signaling, and each row in the joint TDRA table corresponds to the time domain resource information of the PDSCH corresponding to each BWP of each CC. Considering that single DCI supports scheduling of up to 4 BWPs, and the number of columns of the joint TDRA table ranges from 2 to 16, the number of rows of the downlink TDRA table supports a maximum of 32 rows, and the number of rows of the uplink TDRA table supports a maximum of 64 rows. A configuration of the joint TDRA table is shown in Table 4 below.

[0108] Table 4

[0109]

[0110] In the above joint TDRA table, the value filled in the corresponding row and column position is called the TDRA index value, which is associated with a specific row in the TDRA table corresponding to the single DCI scheduling single cell, and the time domain resource information of the PDSCH on the current cell is determined based on the row. For example, the DCI indicates the first row of Table 4 (each row can be called an entry). If the BWP indicator field in the current singleDCI indicates that cell 1 is currently scheduled for transmission on BWP 1, and the corresponding TDRA index value is 1, it further indexes to the first row of information in the TDRA table of a single cell (such as Table 3), which is the time domain resource information corresponding to the currently scheduled PDSCH on cell 1.

[0111] In the TDRA table configuration method, the joint TDRA table corresponding to the single DCI has a maximum of 16 columns, and the lowest column of each cell is the corresponding BWP0 configuration, but when the base station configures 4 UE dedicated BWP information in addition to InitialBWP (BWP0) on each cell, the time domain resource information of BWP4 cannot be indicated. In addition, when the base station configures 4 UE dedicatedBWP information in addition to Initial BWP (BWP0) on each cell, the BWP indicator cannot indicate the scheduling information of BWP#0. Therefore, there is no need to configure the corresponding BWP#0 corresponding information in the table, and the time domain resource information is redundant at this moment.

[0112] In order to solve the problems existing in the above-mentioned TDRA table configuration method, the present application provides a method for indicating time domain resources, so as to configure a joint TDRA table so that the UE can obtain complete time domain resource information in the scenario of multi-cell scheduling of multiple cells through a single DCI.

[0113] It should be understood that the method for indicating time domain resources provided in the embodiment of the present application can be applied to a system communicating through a multi-antenna technology, for example, Figure 1 The communication system 1000 shown in FIG. 1 may include at least one network device and at least one terminal device. The network device and the terminal device may communicate with each other via a multi-antenna technology.

[0114] It should also be understood that the embodiments shown below do not specifically limit the specific structure of the execution subject of the method provided in the embodiments of the present application, as long as it is possible to communicate according to the method provided in the embodiments of the present application by running a program that records the code of the method provided in the embodiments of the present application. For example, the execution subject of the method provided in the embodiments of the present application may be a terminal device and a network device, or a functional module in the terminal device and the network device that can call and execute a program.

[0115] Figure 7 This is a schematic flow chart of a method for indicating time domain resources provided by the present application. It includes the following steps:

[0116] S710, the network device sends first configuration information to the terminal device, and correspondingly, the terminal device receives the first configuration information from the network device.

[0117] Specifically, the first configuration information indicates a first time domain resource allocation list, the first time domain resource allocation list includes at least one element, the at least one element includes a first element, the first element indicates time domain resource allocation information in M ​​BWPs in K cells, wherein K and M are positive integers, and M is greater than or equal to K, M i is the total number of BWPs that can be indicated by the BWP indication field in the i-th cell among the K cells. The BWP indication field is a field in the DCI used for multi-cell scheduling. i is a positive integer, and i is a positive integer less than or equal to K.

[0118] Optionally, each element in the first time domain resource allocation list can be used to indicate the time domain resource allocation information in M ​​BWPs in K cells, and the above-mentioned first element can be any one of the at least one element. Among them, the K cells can be K carriers. In the case of no logical conflict, the cell and carrier can be replaced in the present application.

[0119] Exemplarily, the first time domain resource allocation list in this embodiment can be understood as a TDRA table, or can also be called a sequence or array. When the first time domain resource allocation list is called a TDRA table, an element in the first time domain resource allocation list can also be called a row in the TDRA table.

[0120] Exemplarily, the time domain resource allocation information in the M BWPs in the K cells indicated by the first element in this embodiment can be understood as: the first element indicates the time domain resource allocation index in the M BWPs in the K cells. For example, the first time domain resource allocation list is a TDRA table, and the first element can be a row in the TDRA table, and a row in the TDRA table indicates the time domain resource allocation index of the corresponding BWP.

[0121] As an example but not limitation, in this embodiment, the network device may send the first time domain resource allocation list to the terminal device through high-level signaling (e.g., RRC signaling), or the network device may send the first time domain resource allocation list to the terminal device through other means, such as providing the first time domain resource allocation list to the terminal device through a notification process or a subscription process. Optionally, the first time domain resource allocation list may also be predefined by the protocol.

[0122] Furthermore, the network device may schedule C cells among the above K cells through the first DCI. Figure 7 The method flow shown also includes:

[0123] S720, the network device sends a first DCI to the terminal device, and correspondingly, the terminal device receives the first DCI from the network device.

[0124] Specifically, the first DCI is used to schedule data channels in C cells among the above-mentioned K cells, where C is a positive integer less than or equal to K (e.g., C can be 2, 3, or 4, etc.), thereby realizing multi-cell scheduling. The first DCI includes a BWP indication field, which indicates C BWPs in the C cells, and the C BWPs correspond to the C cells one by one, that is, the BWP indication field indicates a BWP in each of the C cells.

[0125] Optionally, the bit width of the BWP indication field can be 1 bit or 2 bits. The bit width of the BWP indication field is determined by the number of BWPs in the cell with the most BWPs configured among the above-mentioned C cells. For example, C is equal to 2, the above-mentioned C cells include cell #1 and cell #2, the BWPs configured in cell #1 include BWP #0 and BWP #1, and the BWPs configured in cell #2 include BWP #0, BWP #1, BWP #2 and BWP #3, then the bit width of the BWP indication field is determined by the 4 BWPs configured in cell #2, that is, the bit width of the BWP indication field can be determined to be 2 bits. For another example, the above-mentioned C cells include cell #1 and cell #2, the BWP configured in cell #1 includes BWP #0, BWP #1, BWP #2, BWP #3 and BWP #4, and the BWP configured in cell #2 includes BWP #0, BWP #1, BWP #2, BWP #3 and BWP #4. When the BWP indication field takes a value of "11", the BWP indication field indicates BWP #4 configured in cell #1 and BWP #4 configured in cell #2, that is, the BWP indication field indicates two BWPs in the two cells, and the two BWPs correspond one to one to the two cells.

[0126] Optionally, the first DCI may further include a time domain resource allocation field, indicating an element (e.g., a first element) in the first time domain resource allocation list. The first DCI may further include a tuned cell set indication field and a tuned cell indication field, wherein the tuned cell set indication field indicates the first cell set, and the tuned cell indication field indicates the C cells in the first cell set.

[0127] Because the number M of BWPs in the K cells indicated by the first time domain resource allocation list configured by the network device to the terminal device satisfies the following relationship: M i It is the total number of BWPs that can be indicated by the BWP indication field in the i-th cell among the K cells. And the BWPs in multiple cells that can be indicated when the BWP indication field carried in the first DCI takes different values ​​belong to the above-mentioned M BWPs. That is, the time domain resource allocation information corresponding to the BWP that can be indicated by the BWP indication field in the first DCI can be determined based on the first time domain resource allocation list configured by the network device, thereby avoiding the time domain resource allocation information of certain BWPs indicated by the BWP indication field from being unavailable. And it will not cause the BWP indicated by the elements in the first time domain resource allocation list to be unable to be indicated by the BWP, resulting in redundancy of time domain resource allocation information, thereby avoiding increasing signaling overhead. Thereby, the efficiency of indicating the time domain resources of the data channel is improved in the scenario of multi-cell scheduling through a single DCI.

[0128] As can be seen from the above, the first element indicates the time domain resource allocation information in the M BWPs in the K cells. As an example but not a limitation, the first element can be based on the M BWPs in the i-th cell. i The BWP logos of the BWPs indicate M in order from small to large. i Time domain resource allocation information in a BWP.

[0129] For example, the total number of BWPs that can be indicated by different values ​​of the BWP indication field in the i-th cell among the above-mentioned K cells is 4, and the BWP identifiers of the 4 BWPs are: BWP#1, BWP#2, BWP#3 and BWP#4. Then the first element can indicate the time domain resource allocation information of BWP#1, BWP#2, BWP#3 and BWP#4 in the order of BWP#1, BWP#2, BWP#3 and BWP#4.

[0130] In addition, it should be noted that in this embodiment, the number of BWPs configured in the ith cell among the K cells may be greater than the total number of BWPs that can be indicated by different values ​​of the BWP indication field in the ith cell. i BWP, N i is greater than M i For example, the i-th cell is configured with an initial BWP (e.g., BWP#0) and four dedicated BWPs (e.g., BWP#1, BWP#2, BWP#3, and BWP#4). The four dedicated BWPs can be indicated by different values ​​of the BWP indication field (e.g., the BWP indication field value "00" indicates BWP#1, the BWP indication field value "01" indicates BWP#2, the BWP indication field value "10" indicates BWP#3, and the BWP indication field value "11" indicates BWP#4), while BWP#0 cannot be indicated by the BWP indication field. Therefore, the number of BWPs configured in the i-th cell (5) is greater than the total number of BWPs (4) in the i-th cell that can be indicated by different values ​​of the BWP indication field.

[0131] Exemplarily, in this embodiment, the BWP in the i-th cell indicated by different values ​​of the BWP indication field includes but is not limited to the following two possible implementations:

[0132] As a possible implementation method, assuming that a terminal supports the configuration of up to 4 terminal-dedicated BWPs (UE-dedicated BWPs), and the first cell among the above-mentioned C cells is configured with 4 dedicated BWPs in addition to the initial BWP, then the different values ​​of the above-mentioned BWP indication field correspond one-to-one to the 4 dedicated BWPs configured in the first cell.

[0133] As another possible implementation method, assuming that a terminal supports configuration of up to 4 terminal-dedicated BWPs (UE-dedicated BWPs), and the second cell among the above-mentioned C cells is configured with 3 dedicated BWPs in addition to the initial BWP, then the different values ​​of the above-mentioned BWP indication field correspond one-to-one to the initial BWP and the 3 dedicated BWPs configured in the first cell.

[0134] For ease of understanding, the relationship between the number of BWPs M indicated by the first time domain resource allocation list and the total number of BWPs in multiple cells that can be indicated when the BWP indication field takes different values ​​in this embodiment is described below with reference to a specific example:

[0135] Example 1: In addition to the initial BWP, four dedicated BWPs are configured in each of the C cells. Different values ​​of the BWP indication field correspond to the four dedicated BWPs one by one. The number M of BWPs indicated in the first time domain resource allocation list satisfies the following relationship:

[0136] 4 is the total number of dedicated BWPs in the i-th cell indicated by different values ​​of the BWP indication field.

[0137] For example, the base station configures that there are 4 cells in the cell set currently scheduled by the first DCI (that is, the above-mentioned C value is 4), and in addition to the initial BWP (BWP#0), 4 dedicated BWPs (BWP#1, BWP#2, BWP#3 and BWP#4) are configured on each cell. The first time domain resource allocation list does not include the time domain resource allocation information corresponding to the initial BWP of all cells, but includes the time domain resource allocation information corresponding to the 4 dedicated BWPs configured for all cells. When the first time domain resource allocation list is a TDRA table, the TDRA table has 16 columns, and each of the 4 cells corresponds to 4 of the columns, and there is no intersection between the columns corresponding to different cells. The lowest column to the highest column (or from left to right) of the 4 columns corresponding to each cell refers to the time domain resource allocation information corresponding to the BWP identifiers in the 4 dedicated BWPs from low to high (e.g., BWP#1, BWP#2, BWP#3 and BWP#4).

[0138] That is to say, in the first DCI, 4 cells are scheduled, and the total number of BWPs configured in each cell is 5 (for example, each of the C cells is configured with 4 dedicated BWPs in addition to the initial BWP). At this time, the TDRA table needs 20 columns to reflect the time domain resource information of all BWPs. However, considering that when each cell is configured with 4 dedicated BWPs, the initial BWP cannot be indicated by the BWP indication field in the first DCI. Therefore, the TDRA table may not contain the information of BWP#0 of each cell. The TDRA table only needs to contain the information of the 4 dedicated BWPs (BWP#1, BWP#2, BWP#3 and BWP#4) configured for each cell, and the TDRA table will not exceed the limit of 16 columns.

[0139] For ease of understanding, the situation shown in Example 1 is described in conjunction with Table 5. Possible forms of the first time domain resource allocation list in this embodiment are:

[0140] Table 5

[0141]

[0142] Example 2: In addition to the initial BWP, each of the C cells is configured with less than or equal to 3 dedicated BWPs. Different values ​​of the BWP indication field correspond to the initial BWP and the dedicated BWP one by one. The number M of BWPs indicated by the first time domain resource allocation list satisfies the following relationship:

[0143] X is the total number of initial BWPs and dedicated BWPs in the i-th cell indicated by different values ​​of the BWP indication field, and X is an integer greater than or equal to 1 and less than or equal to 4.

[0144] For example, the base station configures that there are 4 cells in the cell set currently scheduled by the first DCI (that is, the above-mentioned C value is 4), and in addition to the initial BWP (BWP#0), 3 dedicated BWPs (BWP#1, BWP#2, BWP#3) are configured on each cell. The first time domain resource allocation list contains the time domain resource allocation information corresponding to the initial BWP of all cells, and the time domain resource allocation information corresponding to the 3 dedicated BWPs configured for all cells. When the first time domain resource allocation list is a TDRA table, the TDRA table has 16 columns, and each of the 4 cells corresponds to 4 of them, and there is no intersection between the columns corresponding to different cells. The lowest column to the highest column (or from left to right) of the 4 columns corresponding to each cell refers to the initial BWP and the time domain resource allocation information corresponding to the BWP identifiers in the 3 dedicated BWPs from low to high (such as BWP#0, BWP#1, BWP#2 and BWP#3).

[0145] That is to say, when the first DCI schedules 4 cells and the total number of BWPs configured on each cell is less than 4, the TDRA table needs to be less than or equal to 16 columns to reflect the time domain resource information of all BWPs, so the TDRA table can contain the information of the initial BWP configured for each cell. As shown in Table 4 above, it will not be repeated here.

[0146] It should be understood that the above examples 1 and 2 are only examples of possible forms of time domain resource allocation information in M ​​BWPs in C cells contained in the first time domain resource allocation list in this embodiment, and do not constitute any limitation on the protection scope of the present application. Other schemes for setting the time domain resource allocation information contained in the time domain resource allocation list based on the total number of BWPs in all cells that can be indicated by different values ​​of the DCI for multi-cell scheduling (such as the first DCI mentioned above) are also within the protection scope of the present application, and will not be illustrated one by one here.

[0147] Further, in this embodiment, after receiving the above-mentioned first configuration information and the first DCI, the terminal device can determine the BWP for transmitting data in different cells based on the first DCI and the first configuration information, and the time domain resource allocation information corresponding to the BWP. Figure 7 The method flow shown also includes:

[0148] S730, the terminal device determines a BWP for data transmission and time domain resource allocation information corresponding to the BWP.

[0149] Specifically, the terminal device determines the C BWPs in the above-mentioned C cells according to the BWP indication field, and thus can determine the time domain resource allocation information corresponding to the C BWPs in the C cells respectively according to the first element.

[0150] In this embodiment, considering that the number of BWPs configured on different cells may be different, and the BWP indication field is a shared indication field of multiple cells (wherein the shared indication field means that multiple cells share the BWP indication field, and the bit width (or number of bits) of the BWP indication field is: the bit width of the indication field corresponding to the cell with the largest number of BWPs configured among the C cells), when the terminal device parses the BWP indication field, there are the following possible situations:

[0151] As a possible implementation, when the BWP configured on the first cell among the C cells can be indicated by different values ​​of the lower L bits of the BWP indication field, the first BWP of the first cell is determined according to the value of the lower L bits of the BWP indication field, where the value of L is less than the bit width of the BWP indication field. For example, if the bit width of the BWP indication field is 2 bits, but only 2 BWPs are configured on the first cell, the first BWP of the first cell can be determined according to the value of the lower bit of the BWP indication field.

[0152] As another possible implementation method, when the number of BWPs configured on the second cell among C cells is greater than 2 and the number of BWPs configured on the first cell among C cells is less than or equal to 2, the bit width of the BWP indication field is 2 bits, and the first BWP of the first cell is determined according to the value of the least significant bit of the BWP indication field.

[0153] For example, BWP#0, BWP#1, BWP#2, BWP#3, BWP#4 are configured on cell 1, BWP#0, BWP#1 are configured on cell 2, BWP#0, BWP#1 are configured on cell 3, and BWP#1, BWP#2, BWP#3, BWP#4 are configured on cell 4. At this time, the bit width of the indication information required for the corresponding BWP on each cell is 2 bits, 1 bit, 1 bit, and 2 bits respectively, so the BWP indication field in the first DCI takes a maximum value of 2 bits. When the BWP indication field takes a value of "11", since the number of bits of the indication information bit width required for cell 2 and cell 3 is less than the BWP indication field, when the terminal device determines the BWP on cell 2 and cell 3 based on the BWP indication field, it interprets the low bit "1" of the BWP indication field, and can determine that the currently scheduled BWP on cell 2 and cell 3 is BWP#1.

[0154] As another possible implementation manner, the BWP of the first cell among the C cells indicated by the BWP indication field is a BWP that is not configured for the first cell, or the BWP of the first cell indicated by the BWP indication field is a BWP in a dormant state.

[0155] In this implementation, the terminal device determines not to receive or send data on the first cell; or the terminal device determines to use the activated BWP for data transmission on the first cell. For example, the terminal device determines to use the activated BWP for data transmission on the first cell before receiving the BWP indication field for data transmission. The data transmission may be the network device sending data to the terminal device, or the terminal device sending data to the network device.

[0156] For example, BWP#0, BWP#1, BWP#2, BWP#3, and BWP#4 are configured on cell 1, BWP#0, BWP#1, BWP#2, and BWP#3 are configured on cell 2, BWP#0, BWP#1, BWP#2, and BWP#3 are configured on cell 3, and BWP#0, BWP#1, BWP#2, BWP#3, and BWP#4 are configured on cell 4. At this time, the bit width of the indication information required for the corresponding BWP on each cell is 2 bits, 2 bits, 2 bits, and 2 bits, respectively. Therefore, the BWP indication field in the first DCI takes a maximum value of 2 bits. When the BWP indication field takes the value of "11", since there is no information about BWP#3 configured on cell 3, the terminal device can ignore the indication of the BWP indication field at this time, and use the BWP that transmitted data at the previous moment (such as the activated BWP used for data transmission on cell 3 last time; or the activated BWP currently receiving the BWP indication field) to transmit data on cell 3; or, the terminal device may not transmit data on cell 3.

[0157] Figure 7 In the method for indicating time domain resources shown, in the scenario where multi-cell scheduling is implemented through a single DCI, the time domain resource allocation information contained in the first time domain resource allocation list configured by the network device to the terminal device covers the time domain resource allocation information corresponding to the BWP that can be indicated by the BWP indication field. This can avoid the time domain resource allocation information of certain BWPs indicated by the BWP indication field being unavailable. And it will not cause the number of BWPs M indicated by the first time domain resource allocation list to be greater than the total number of BWPs that can be indicated when the BWP indication field takes different values, resulting in redundant time domain resource allocation information. In the scenario where multi-cell scheduling is implemented through a single DCI, the efficiency of indicating the time domain resources of the data channel is improved.

[0158] The present application also provides another method for indicating time domain resources, by configuring the time domain resource allocation information corresponding to the BWP configured in each cell on C cells, to avoid the time domain resource allocation information of some BWPs being unable to be obtained. Figure 8 The method for indicating time domain resources is introduced in detail.

[0159] Figure 8 This is a schematic flow chart of another method for indicating time domain resources provided by the present application. It includes the following steps:

[0160] S810, the network device sends second configuration information to the terminal device, and correspondingly, the terminal device receives the second configuration information from the network device.

[0161] Furthermore, the network device may schedule the C cells mentioned above through the second DCI. Figure 8 The method flow shown also includes:

[0162] S820, the network device sends a second DCI to the terminal device, and correspondingly, the terminal device receives the second DCI from the network device.

[0163] It should be understood that the manner in which the network device sends the second configuration information and the second DCI to the terminal device in this embodiment, as well as the definition of the second time domain resource allocation list and the second DCI can refer to the above Figure 7 The difference is that the number of BWPs M indicated by the second time domain resource allocation list in the embodiment satisfies the following relationship:

[0164] M i is the total number of BWPs configured in the i-th cell among the K cells, M i is a positive integer, and i is an integer less than or equal to K.

[0165] In this embodiment, since the number of BWPs M in the K cells indicated by the second time domain resource allocation list configured by the network device to the terminal device is equal to the total number of BWPs configured in the K cells, it can be understood that the time domain resource allocation information corresponding to the BWP configured in each of the K cells can be determined based on the second time domain resource allocation list configured by the network device, thereby avoiding the inability to obtain the time domain resource allocation information of some BWPs, and improving the efficiency of the time domain resources indicating the data channel in the scenario of multi-cell scheduling through a single DCI.

[0166] As can be seen from the above, the second element indicates the time domain resource allocation information in the M BWPs in the K cells. As an example but not a limitation, the second element can be based on the M BWPs in the i-th cell. i The BWP logos of the BWPs indicate M in order from small to large. i Time domain resource allocation information in a BWP.

[0167] For example, the total number of BWPs that can be indicated by different values ​​of the BWP indication field in the i-th cell among the above-mentioned C cells is 4, and the BWP identifiers of the 4 BWPs are: BWP#1, BWP#2, BWP#3 and BWP#4. The second element can indicate the time domain resource allocation information of BWP#1, BWP#2, BWP#3 and BWP#4 in the order of BWP#1, BWP#2, BWP#3 and BWP#4.

[0168] In addition, it should be noted that in this embodiment, the number of BWPs configured in the i-th cell among the K cells may be greater than the total number of BWPs that can be indicated by different values ​​of the BWP indication field in the i-th cell, and the time domain resource allocation information corresponding to the BWP configured in the i-th cell can be reflected in the second time domain resource allocation list. For example, the i-th cell is configured with an initial BWP (e.g., BWP#0) and four dedicated BWPs (e.g., BWP#1, BWP#2, BWP#3, and BWP#4), and the four dedicated BWPs can be indicated by different values ​​of the BWP indication field (e.g., the BWP indication field value "00" indicates BWP#1, the BWP indication field value "01" indicates BWP#2, the BWP indication field value "10" indicates BWP#3, and the BWP indication field value "11" indicates BWP#4), while BWP#0 cannot be indicated by the BWP indication field, but the time domain resource allocation information corresponding to the initial BWP and the four dedicated BWPs can be reflected in the second time domain resource allocation list.

[0169] For ease of understanding, possible forms of the second time domain resource allocation list in this embodiment are described in conjunction with Table 6:

[0170] Table 6

[0171]

[0172] Further, in this embodiment, after receiving the second configuration information and the second DCI, the terminal device can determine the BWP for transmitting data in different cells based on the second DCI and the second configuration information, and the time domain resource allocation information corresponding to the BWP. Figure 8 The method flow shown also includes:

[0173] S830, the terminal device determines a BWP for data transmission and time domain resource allocation information corresponding to the BWP.

[0174] For step S830, reference may be made to the description of step S730 above, which will not be repeated here.

[0175] The present application also provides a communication method. Fig. 9 This communication method is described in detail.

[0176] Fig. 9 This is a schematic flow chart of a communication method provided by the present application. It includes the following steps:

[0177] S910, the network device sends third configuration information to the terminal device, and correspondingly, the terminal device receives the third configuration information from the network device.

[0178] Specifically, the third configuration information indicates a scheduled cell list. The scheduled cell list includes at least one element, the at least one element includes a third element, and the third element indicates a cell scheduled by the DCI for multi-cell scheduling.

[0179] Each element in the scheduled cell list may be used to indicate a cell scheduled by the DCI for multi-cell scheduling, and the third element may be any one of the at least one element. The cell scheduled by the DCI may be a carrier scheduled by the DCI.

[0180] Exemplarily, the scheduling cell list in this embodiment can be understood as a scheduling cell table, or can also be called a sequence or array. When the scheduling cell list is called a scheduling cell table, an element in the scheduling cell list can also be called an entry in the scheduling cell table.

[0181] As an example but not limitation, in this embodiment, the network device may send the scheduling cell list to the terminal device via high-level signaling (e.g., RRC signaling), or the network device may send the scheduling cell list to the terminal device via other means, such as providing the scheduling cell list to the terminal device via a notification process or a subscription process.

[0182] For ease of understanding, the following Table 7 briefly introduces possible forms of the scheduling cell list sent by the network device to the terminal device in this embodiment:

[0183] For example, the scheduling cell set includes 4 cells, namely {cell 1, cell 2, cell 3, cell 4}. The scheduling cell list configured by the network device through RRC signaling is shown in Table 7 below.

[0184] Table 7

[0185] Index Cell combination 0 cell 1, cell 2 1 cell 1, cell 2, cell 3 2 cell 3, cell 4 3 cell 2, cell 3, cell 4 …… ……

[0186] It can be seen from Table 7 that each row of entry in the scheduled cell list contains at least one cell, and the number of cells contained in each row is the cells currently scheduled by the DCI.

[0187] It should be understood that for a co-scheduled cell set, when the network device configures a scheduled cell list (or table) through RRC, the scheduled cell indication field in the DCI exists, which indicates a row of cell combinations (which can be understood as a row) in the scheduled cell list configured by RRC.

[0188] It should also be understood that the above Table 7 is only an example and does not constitute any limitation on the protection scope of the present application.

[0189] S920, the network device sends a third DCI to the terminal device, and correspondingly, the terminal device receives the third DCI from the network device.

[0190] Specifically, the third DCI is used to schedule data channels in C cells, and the third DCI includes a scheduled cell indication field (Scheduled cells indicator) and a frequency domain information indication field (frequency domain resource allocation, FDRA), wherein the scheduled cell indication field is used to indicate the C cells, and the C cells are the cells indicated by the third element in the above-mentioned scheduled cell list (such as a row of cells in the table), and the frequency domain information indication field is used to indicate the frequency domain information corresponding to each cell in the C cells.

[0191] For example, when the cells scheduled by the third DCI are cell 3 and cell 4, the scheduling cell indication field in the third DCI indicates that the index is 2. The terminal device combines the scheduling cell list and the scheduling cell field in the third DCI to know that the cells currently scheduled by the third DCI are cell 3 and cell 4, and combines the frequency domain information indication field in the third DCI to know the frequency domain information corresponding to cell 3 and the frequency domain information corresponding to cell 4 currently scheduled by the third DCI.

[0192] Further, in this embodiment, the terminal device can determine the specific scheduled cell based on the frequency domain information corresponding to the multiple cells scheduled by the third DCI (eg, determining that one or more cells among the C cells cannot be scheduled by the third DCI). Fig. 9 The method flow shown also includes:

[0193] S930, the terminal device determines the cell that is not scheduled by the third DCI.

[0194] The terminal device determines the cell in the C cells that cannot be scheduled by the third DCI according to the frequency domain information corresponding to each cell in the C cells. In this embodiment, when the configuration value of the FDRA field corresponding to one or more cells in the cells indicated by the scheduling cell indication field in the third DCI is an invalid value, the one or more cells are not scheduled by the third DCI.

[0195] Exemplarily, the invalid value of FDRA specifically refers to: when the frequency domain resource allocation mode is type 0 (type 0), all bits of the FDRA field corresponding to the cell are set to 0; or when the frequency domain resource allocation mode is type 1 (type 1), all bits of the FDRA field corresponding to the cell are set to 1, or when the frequency domain resource allocation mode is a dynamically switched resource allocation mode, all FDRA fields corresponding to the cell are set to 0 or 1. Among them, the frequency domain resource allocation mode is configured by high-level signaling (such as RRC configuration) and is not described in detail here.

[0196] As an example but not limitation, when the frequency domain resource allocation mode corresponding to the third cell among C cells is type 0, and all bits of the frequency domain information indication field corresponding to the third cell are set to 0, the terminal device determines that the third cell cannot be scheduled by the third DCI; or, when the frequency domain resource allocation mode corresponding to the third cell among C cells is type 1, and all bits of the frequency domain information indication field corresponding to the third cell are set to 1, the terminal device determines that the third cell cannot be scheduled by the third DCI; or, when the frequency domain resource allocation mode corresponding to the third cell among C cells is a dynamically switched resource allocation mode, and all bits of the frequency domain information indication field corresponding to the third cell are set to 1 or 0, the terminal device determines that the third cell cannot be scheduled by the third DCI.

[0197] For example, when the base station configures the scheduling cell list, the scheduling cell indication field in the third DCI exists, and the indicated entry contains three cells: cell 1, cell 2, and cell 3. If the FDRA value corresponding to cell 2 is an invalid value, cell 2 is not scheduled by the third DCI. The UE combines the scheduling cell indication field and the setting of the FDRA value of each cell to determine that the cells actually scheduled by the current third DCI are cell 1 and cell 3.

[0198] Fig. 9 The communication method shown, in the scenario where multi-cell scheduling is implemented through a single DCI, the terminal device in the communication method can determine whether a cell is scheduled based on the value of the frequency domain information indication field corresponding to different cells carried in a single DCI, thereby determining the cells that cannot be scheduled among the multiple cells scheduled by a single DCI by parsing the frequency domain information indication field in the single DCI without increasing the size of the single DCI, thereby avoiding invalid scheduling when a cell has no frequency domain resources, and improving the flexibility of implementing multi-cell scheduling with a single DCI.

[0199] It should be understood that the sequence numbers of the above processes do 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.

[0200] It should also be understood that in the various embodiments of the present application, unless otherwise specified or there is a logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced to each other, and the technical features in different embodiments can be combined to form new embodiments according to their internal logical relationships.

[0201] It should also be understood that in some of the above embodiments, the devices in the existing network architecture are mainly used as examples for exemplary description (such as network devices, terminal devices, etc.), and it should be understood that the specific form of the device is not limited in the embodiments of the present application. For example, devices that can achieve the same function in the future are applicable to the embodiments of the present application.

[0202] It can be understood that in the above-mentioned various method embodiments, the methods and operations implemented by devices (such as network devices, terminal devices) can also be implemented by components of the devices (such as chips or circuits).

[0203] Above, combined Figure 7 and Figure 8 The method for indicating time domain resources provided by the embodiment of the present application is described in detail. The above method for indicating time domain resources is mainly introduced from the perspective of interaction between terminal devices and network devices. It can be understood that in order to implement the above functions, the terminal devices and network devices include hardware structures and / or software modules corresponding to the execution of each function.

[0204] Also combined Fig. 9 The communication method provided by the embodiment of the present application is described in detail. The above communication method is mainly introduced from the perspective of interaction between the terminal device and the network device. It can be understood that in order to realize the above functions, the terminal device and the network device include hardware structures and / or software modules corresponding to the execution of each function.

[0205] It is understandable that, in order to implement the functions in the above embodiments, the base station and the terminal include hardware structures and / or software modules corresponding to the execution of each function. It should be easily appreciated by those skilled in the art that, in combination with the units and method steps of each example described in the embodiments disclosed in this application, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application scenario and design constraints of the technical solution.

[0206] Fig.10 and Fig.11 The following is a schematic diagram of the structure of possible communication devices provided in the embodiments of the present application. These communication devices can be used to implement the functions of the terminal or base station in the above method embodiments, and thus can also achieve the beneficial effects of the above method embodiments. In the embodiments of the present application, the communication device can be as follows: Figure 1 One of the terminals 120a-120j shown may also be Figure 1 The base station 110a or 110b shown may also be a module (such as a chip) applied to a terminal or a base station.

[0207] like Fig.10 As shown, the communication device 1000 includes a processing unit 1010 and a transceiver unit 1020. The communication device 1000 is used to implement the above Figure 7 or Figure 8 or Fig. 9 The functions of the terminal or base station in the method embodiment shown in FIG.

[0208] When the communication device 1000 is used to implement Figure 7 The function of the terminal in the method embodiment shown is: the transceiver unit 1020 is used to receive first configuration information from the network device, the first configuration information indicates a first time domain resource allocation list, the first time domain resource allocation list includes at least one element, the at least one element includes a first element, and the first element indicates the time domain resource allocation information (e.g., time domain resource allocation index) of M BWPs in K cells, M i is the total number of BWPs that can be indicated by the BWP indication field in the i-th cell among the K cells. The BWP indication field is a field in the DCI used for multi-cell scheduling. i is a positive integer, and i is an integer less than or equal to K. The transceiver unit 1020 is further configured to receive first downlink control information DCI from a network device for scheduling data channels in C cells, the first DCI including a BWP indication field, the first DCI including a BWP indication field, the BWP indication field being used to indicate C BWPs in the C cells, the C BWPs corresponding to the C cells one-to-one.

[0209] Alternatively, when the communication device 1000 is used to implement Figure 8 The function of the terminal in the method embodiment shown is: the transceiver unit 1020 is used to receive second configuration information from the network device, and the second configuration information is used to indicate a second time domain resource allocation list. The second time domain resource allocation list includes at least one element, and the at least one element includes a second element, and the second element indicates the time domain resource allocation information (such as the time domain resource allocation index) of M BWPs in K cells. M i is the total number of BWPs configured in the i-th cell among the K cells, M iis a positive integer, and i is an integer less than or equal to K. The transceiver unit 1020 is further configured to receive a second DCI from a network device, the second DCI being used to schedule data channels in C cells, the second DCI comprising a BWP indication field, the BWP indication field being used to indicate C BWPs in the C cells, the C BWPs corresponding to the C cells one-to-one, that is, the BWP indication field indicates a BWP in each of the C cells.

[0210] Alternatively, when the communication device 1000 is used to implement Fig. 9 The function of the terminal in the method embodiment shown is: the transceiver unit 1020 is used to receive the third configuration information from the network device, and the second configuration information is used to indicate the scheduling cell list. The scheduling cell list includes at least one element, and at least one element includes a third element, and the third element indicates the cell scheduled by the DCI for multi-cell scheduling. The transceiver unit 1020 is also used to receive a third DCI from the network device, and the third DCI is used to schedule data channels in C cells. The third DCI includes a scheduling cell indication field and a frequency domain information indication field, wherein the scheduling cell indication field is used to indicate the C cells, and the frequency domain information indication field is used to indicate the frequency domain information corresponding to each cell in the C cells. The processing unit 1010 is used to determine the cells in the C cells that are not scheduled by the third DCI according to the frequency domain information corresponding to the C cells respectively.

[0211] When the communication device 1300 is used to implement Figure 7 In the method embodiment shown, the function of the base station is: the transceiver unit 1020 is used to send first configuration information to the terminal device, the first configuration information indicates a first time domain resource allocation list, the first time domain resource allocation list includes at least one element, the at least one element includes a first element, and the first element indicates the time domain resource allocation information (e.g., time domain resource allocation index) of M BWPs in K cells, M i is the total number of BWPs that can be indicated by the BWP indication field in the i-th cell among the K cells, and the BWP indication field is a field in the DCI used for multi-cell scheduling. The transceiver unit 1020 is also used to send a first downlink control information DCI for scheduling data channels in C cells to the terminal device, and the first DCI includes a BWP indication field, and the BWP indication field is used to indicate C BWPs in the C cells, and the C BWPs correspond to the C cells one by one.

[0212] Alternatively, when the communication device 1000 is used to implement Figure 8In the method embodiment shown, the function of the terminal is: the transceiver unit 1020 is used to send second configuration information to the terminal device, and the second configuration information is used to indicate the second time domain resource allocation list. The second time domain resource allocation list includes at least one element, and the at least one element includes a second element, and the second element indicates the time domain resource allocation information (such as the time domain resource allocation index) of M BWPs in K cells. M i is the total number of BWPs configured in the i-th cell among the K cells, M ， is a positive integer, and i is an integer less than or equal to K. The transceiver unit 1020 is further used to send a second DCI to the terminal device, where the second DCI is used to schedule data channels in C cells, and the second DCI includes a BWP indication field, where the BWP indication field is used to indicate C BWPs in the C cells, and the C BWPs correspond to the C cells one-to-one, that is, the BWP indication field indicates a BWP in each of the C cells.

[0213] For more detailed description of the processing unit 1010 and the transceiver unit 1020, please refer to Figure 7 or Figure 8 or Fig.10 The method embodiment shown is described in detail.

[0214] like Fig.11 As shown, the communication device 1100 includes a processor 1110 and an interface circuit 1120. The processor 1110 and the interface circuit 1120 are coupled to each other. It is understood that the interface circuit 1120 can be a transceiver or an input-output interface. Optionally, the communication device 1100 may also include a memory 1130 for storing instructions executed by the processor 1110 or storing input data required by the processor 1110 to execute instructions or storing data generated after the processor 1110 executes instructions.

[0215] When the communication device 1100 is used to implement Fig.10 When the functions of the device are shown, the processor 1110 is used to implement the functions of the processing unit 1010, and the interface circuit 1120 is used to implement the functions of the transceiver unit 1020.

[0216] When the above communication device is a chip applied to a terminal, the terminal chip implements the functions of the terminal in the above method embodiment. The terminal chip receives information sent by the base station to the terminal through other modules in the terminal (such as a radio frequency module or an antenna); or the terminal chip sends information to other modules in the terminal (such as a radio frequency module or an antenna), and the information is sent by the terminal to the base station.

[0217] When the above-mentioned communication device is a module applied to a base station, the base station module implements the functions of the base station in the above-mentioned method embodiment. The base station module receives information from other modules in the base station (such as a radio frequency module or an antenna), and the information is sent by the terminal to the base station; or, the base station module sends information to other modules in the base station (such as a radio frequency module or an antenna), and the information is sent by the base station to the terminal. The base station module here can be a baseband chip of a base station, or a CU, DU or other module, or a device under the O-RAN architecture, such as an open CU, an open DU and other devices.

[0218] It is understandable that the processor in the embodiments of the present application may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. The general-purpose processor may be a microprocessor or any conventional processor.

[0219] The method steps in the embodiments of the present application can be implemented in hardware or in software instructions that can be executed by a processor. The software instructions can be composed of corresponding software modules, and the software modules can be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory, register, hard disk, mobile hard disk, CD-ROM or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. The storage medium can also be a component of the processor. The processor and the storage medium can be located in an ASIC. In addition, the ASIC can be located in a base station or a terminal. The processor and the storage medium can also be present in a base station or a terminal as discrete components.

[0220] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented by 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 programs or instructions. When the computer program or instruction is loaded and executed on a computer, the process or function described in the embodiment of the present application is executed in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user device or other programmable device. The computer program or instruction may 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 program or instruction may be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired or wireless means. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server, data center, etc. that integrates one or more available media. The available medium may be a magnetic medium, for example, a floppy disk, a hard disk, a tape; it may also be an optical medium, for example, a digital video disc; it may also be a semiconductor medium, for example, a solid-state hard disk. The computer-readable storage medium may be a volatile or nonvolatile storage medium, or may include both volatile and nonvolatile types of storage media.

[0221] In the various embodiments of the present application, unless otherwise specified or provided for in any logical conflict, the terms and / or descriptions between the different embodiments are consistent and may be referenced to each other, and the technical features in the different embodiments may be combined to form new embodiments according to their inherent logical relationships.

[0222] In this application, "indication" may include direct indication and indirect indication. When describing that a certain indication information indicates A, it may include that the indication information directly indicates A or indirectly indicates A, but it does not mean that the indication information must carry A.

[0223] "At least one" shown in the present application refers to one or more, and "multiple" refers to two or more. In addition, in the embodiments of the present application, "first", "second" and various digital numbers (for example, "#1", "#2", etc.) are only for the convenience of description, and are not used to limit the scope of the embodiments of the present application. The size of the sequence number of each process 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. In addition, in the embodiments of the present application, words such as "S710" are only marks made for the convenience of description, and do not limit the order of execution steps.

[0224] The term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: 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.

Claims

1. A method for indicating time domain resources, characterized in that: include: receiving first configuration information from a network device, the first configuration information indicating a first time domain resource allocation list, the first time domain resource allocation list including at least one element, the at least one element including a first element, the first element indicating time domain resource allocation information in M ​​bandwidth parts BWP in K cells, wherein K and M are positive integers, and M is greater than or equal to K, M i is the total number of BWPs in the i-th cell among the K cells that can be indicated by the BWP indication field, where the BWP indication field is a field in the downlink control information DCI used for multi-cell scheduling, M i is a positive integer, i is a positive integer less than or equal to K; Receive first downlink control information DCI for scheduling data channels in C cells from the network device, the first DCI includes the BWP indication field, the BWP indication field indicates C BWPs in the C cells, the C BWPs correspond one-to-one to the C cells, the C cells are cells among the K cells, C is a positive integer less than or equal to K, and the first DCI is a DCI for multi-cell scheduling.

2. The method according to claim 1, characterized in that The first DCI further includes a time domain resource allocation field, a modulated cell set indication field, and a modulated cell indication field, the time domain resource allocation field indicates a first element, the modulated cell set indication field indicates a first cell set, and the modulated cell indication field indicates the C cells in the first cell set, and the method further includes: The time domain resource allocation information respectively corresponding to the C BWPs in the C cells is determined according to the first element.

3. The method according to claim 2, characterized in that When the number of BWPs configured on the second cell among the C cells is greater than 2, and the number of BWPs configured on the first cell among the C cells is less than or equal to 2, the bit width of the BWP indication field is 2 bits, and the method further includes: The first BWP of the first cell is determined according to the value of the least significant bit of the BWP indication field.

4. The method according to claim 2, characterized in that: When the BWP of a first cell among the C cells indicated by the BWP indication field is a BWP that is not configured by the first cell, or the BWP of the first cell indicated by the BWP indication field is a BWP in a dormant state, the method further includes: Determine not to receive or send data on the first cell; or, Determine to use activated BWP for data transmission on the first cell.

5. A method for indicating time domain resources, characterized in that: include: Sending first configuration information to a terminal device, where the first configuration information indicates a first time domain resource allocation list, where the first time domain resource allocation list includes at least one element, where the at least one element includes a first element, where the first element indicates time domain resource allocation information in M ​​bandwidth parts BWP in K cells, where K and M are positive integers, and M is greater than or equal to K, M i is the total number of BWPs in the i-th cell among the K cells that can be indicated by the BWP indication field, where the BWP indication field is a field in the downlink control information DCI used for multi-cell scheduling, M i is a positive integer, i is a positive integer less than or equal to K; The first downlink control information DCI for scheduling data channels in C cells is sent to the terminal device, the first DCI includes the BWP indication field, the BWP indication field indicates C BWPs in the C cells, the C BWPs correspond one-to-one to the C cells, the C cells are cells among the K cells, C is a positive integer less than or equal to K, and the first DCI is a DCI for multi-cell scheduling.

6. The method according to any one of claims 1 to 5, characterized in that The first element is calculated according to the M in the i-th cell. i The BWP identifiers of the BWPs indicate the M in order from small to large. i Time domain resource allocation information in a BWP.

7. The method according to any one of claims 1 to 6, characterized in that The i-th cell is configured with N i BWP, N i is greater than M i An integer.

8. The method according to any one of claims 1 to 7, characterized in that In the case where four dedicated BWPs are configured in addition to the initial BWP on the first cell among the C cells, different values ​​of the BWP indication field indicate the four dedicated BWPs, and different values ​​of the BWP indication field correspond one-to-one to the four dedicated BWPs.

9. The method according to any one of claims 1 to 8, characterized in that In the case where three dedicated BWPs are configured in addition to the initial BWP on the second cell among the C cells, different values ​​of the BWP indication field indicate the initial BWP and the three dedicated BWPs, and different values ​​of the BWP indication field correspond one-to-one to the initial BWP and the three dedicated BWPs.

10. A communication device, characterized in that: The method comprises a module or a unit for executing the method as claimed in any one of claims 1 to 9.

11. A communication device, characterized in that: It includes a processor and an interface circuit, wherein the interface circuit is used to receive signals from other communication devices outside the communication device and transmit them to the processor or send signals from the processor to other communication devices outside the communication device, and the processor is used to implement the method as described in any one of claims 1 to 9 through a logic circuit or executing code instructions.

12. A chip, characterized in that: The invention comprises a processor, wherein the processor is coupled to a memory, the memory is used to store a computer program, and the processor is used to execute the computer program stored in the memory to implement the method according to any one of claims 1 to 9.

13. A computer-readable storage medium, characterized in that: The storage medium stores a computer program or an instruction, and when the computer program or the instruction is executed by the communication device, the method according to any one of claims 1 to 9 is implemented.

14. A computer program product, characterized in that The invention comprises a computer program, which, when being executed, implements the method according to any one of claims 1 to 9.

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