Method for indicating time-domain resource, and communication apparatus

Abstract

Provided in the present application are a method for indicating a time-domain resource, and a communication apparatus. The method comprises: in a scenario in which multi-cell scheduling is implemented by means of a single piece of DCI, a network device sending configuration information to a terminal device, wherein the configuration information indicates a time-domain resource allocation list, and an element in the time-domain resource allocation list indicates time-domain allocation information in M BWPs within K cells, equation (I), where Mi is the total number of BWPs that can be indicated by a BWP indication field in an ith cell among the K cells, and the BWP indication field is a field in the DCI for multi-cell scheduling. Thus, a terminal device can acquire, on the basis of a BWP indication field and a time-domain resource allocation list, time-domain resource allocation information of BWPs indicated by the BWP indication field, thereby improving the efficiency of indicating a time-domain resource of a data channel in the scenario of implementing multi-cell scheduling by means of a single piece of DCI.

Description

A method and communication device for indicating time domain resources

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on November 3, 2023, with application number 202311473225.4 and application name “A method and communication device for indicating time domain resources”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] 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

[0003] 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 the integration of multi-frequency resources, aggregate spectrum resources of the same frequency band or different frequency bands for terminal use, thereby improving the utilization of the entire network resources and improving the user experience. For example, 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).

[0004] 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, this TDRA table may fail to indicate the time domain resource information of certain bandwidth parts (BWP). Therefore, how to configure an appropriate 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.

[0005] Summary of the Invention

[0006] 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 achieved through a single DCI.

[0007] In a first aspect, a method for indicating time domain resources is provided. The method can be executed by a terminal device or by a component of the terminal device (e.g., a chip, circuit, or chip system). For ease of understanding, the following description uses the terminal device as an example.

[0008] The method for indicating time domain resources includes: a terminal device receiving first configuration information from a network device, the first configuration information being used to indicate a first time domain resource allocation list. Specifically, the first time domain resource allocation list includes at least one element, the at least one element including a first element, the first element indicating time domain resource allocation information (e.g., a time domain resource allocation index) of M BWPs 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 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, where 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, where the BWP indication field is used to indicate C BWPs in the C cells. 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.

[0009] 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 all be determined based on the first time domain resource allocation list configured by the network device. This can avoid the time domain resource allocation information for certain BWPs indicated by the BWP indication field being unavailable. Furthermore, it will not result in redundant time domain resource allocation information due to the BWP indicated by an element in the first time domain resource allocation list not being indicated by the BWP indication field, thus avoiding increased signaling overhead. This improves the efficiency of indicating time domain resources for data channels in scenarios where multi-cell scheduling is implemented using a single DCI.

[0010] 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 the first element, the modulated cell set indication field indicates the first cell set, and the modulated cell indication field indicates C cells in the first cell set. The method also includes: the terminal device determines the time domain resource allocation information corresponding to the C BWPs in the C cells based on the first element.

[0011] 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 based on the value of the least significant bit of the BWP indication field.

[0012] Based on the above technical solution, assuming that the number of BWPs configured in the first cell of the C cells is less than or equal to 2, when the terminal device parses the BWP indication field for the first cell to determine the BWP indicated by the BWP indication field, it can be determined based on the least significant bit in the BWP indication field, thereby avoiding errors in parsing the BWP indication field. That is, in scenarios where the number of BWPs configured in cells varies, the terminal device can use a flexible parsing method to indicate the BWPs in different cells through the BWP indication field, supporting different numbers of BWPs configured in different cells and improving the flexibility of the solution.

[0013] 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.

[0014] 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.

[0015] In a second 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 (e.g., a chip, circuit, or chip system). For ease of understanding, the following description is based on the example of a terminal device performing the method.

[0016] The method for indicating time domain resources includes: a network device sending first configuration information to a terminal device, where 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, where the at least one element includes a first element, where the first element indicates time domain resource allocation information (e.g., a time domain resource allocation index) of M BWPs in K (M) cells, where K and M are positive integers, and M is greater than or equal to K. M iThe 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. 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. The BWP indication field is used to indicate C BWPs in the C cells. 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.

[0017] 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 each BWP.

[0018] 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.

[0019] In combination with the first aspect or the second aspect, in certain implementations of the first aspect or the second aspect, assuming that 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 four dedicated BWPs, and different values ​​of the BWP indication field correspond one-to-one to the four dedicated BWPs.

[0020] In combination with the first aspect or the second aspect, in certain implementations of the first aspect or the second aspect, assuming that 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.

[0021] In a third aspect, a method for indicating time domain resources is provided. The method can be executed by a terminal device or by a component of the terminal device (e.g., a chip, circuit, or chip system). For ease of understanding, the following description uses execution by a terminal device as an example.

[0022] The method for indicating time domain resources includes: a terminal device receiving second configuration information from a network device, the second configuration information being 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 including a second element, the second element indicating time domain resource allocation information (e.g., a time domain resource allocation index) of M BWPs 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 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, where 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, where the BWP indication field is used to indicate C BWPs in the C cells. 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.

[0023] 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.

[0024] 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 the second element, the modulated cell set indication field indicates the second cell set, and the modulated cell indication field indicates the C cells in the second cell set. The method also includes: the terminal device determines the time domain resource allocation information corresponding to the C BWPs in the C cells based on the second element.

[0025] 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 based on the value of the least significant bit of the BWP indication field.

[0026] 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.

[0027] 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 (e.g., a chip, circuit, or chip system). For ease of understanding, the following description is based on the example of a terminal device.

[0028] The method for indicating time domain resources includes: a network device sending second configuration information to a terminal device, where 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, where the at least one element includes a second element, where the second element indicates time domain resource allocation information (e.g., a time domain resource allocation index) of M BWPs 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 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, where 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 first DCI includes a BWP indication field, where the BWP indication field is used to indicate C BWPs in the C cells. 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.

[0029] 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 calculated according to the M 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 each BWP.

[0030] In a fifth aspect, a communication device is provided, which is configured to execute the method provided by any of the above aspects or implementations thereof. Specifically, the device may include units and / or modules, such as a processing unit and / or a communication unit, configured to execute the method provided by any of the above aspects or implementations thereof.

[0031] In one implementation, the apparatus is the aforementioned terminal device or network device. When the apparatus is a terminal device or network device, the communication unit may be a transceiver, an input / output interface, or a communication interface; and 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.

[0032] In another implementation, the device is a chip, chip system, or circuit used in a terminal device or network device. When the device is a chip, chip system, or circuit used in a terminal device or network device, the communication unit may be an input / output interface, interface circuit, output circuit, input circuit, pin, or related circuit on the chip, chip system, or circuit; and the processing unit may be at least one processor, processing circuit, or logic circuit.

[0033] In a sixth aspect, a communication method is provided. The method can be executed by a terminal device or by a component of the terminal device (e.g., a chip, circuit, or chip system). For ease of understanding, the following description is based on the example of execution by a terminal device.

[0034] The communication method includes: the terminal device receives third configuration information from the network device, and the third configuration information is used to indicate the scheduling cell list. Specifically, the scheduling cell list includes at least one element, and the at least one element includes a third element, and the third element indicates the cell scheduled by the DCI for multi-cell scheduling. Furthermore, the terminal device also receives a third DCI from the 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 achieve 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 cell in 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 cell in the C cells.

[0035] Based on the above technical solution, in the scenario where multi-cell scheduling is achieved 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 indicated by the single DCI by parsing the frequency domain information indication field in 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.

[0036] 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 in the C cells that cannot be scheduled by the third DCI, including:

[0037] 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,

[0038] 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,

[0039] 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.

[0040] 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.

[0041] In a seventh aspect, a communication device is provided, which includes: 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.

[0042] In one implementation, the apparatus is a terminal device or a network device.

[0043] In another implementation, the device is a chip, a chip system or a circuit used in a terminal device or a network device.

[0044] In an eighth aspect, a communication device is provided, comprising: at least one processor and a communication interface, wherein the at least one processor is configured to retrieve 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 implementations thereof. The communication interface may be implemented in hardware or software.

[0045] In one implementation, the apparatus further includes a memory.

[0046] In a ninth aspect, a processor is provided for executing the methods provided in the above aspects.

[0047] For the operations such as sending and acquiring / receiving involved in the processor, unless otherwise specified, or if they do not conflict with their actual functions or internal logic in the relevant descriptions, they can be understood as operations such as processor output, reception, and input, or as sending and receiving operations performed by the radio frequency circuit and antenna. This application does not limit this.

[0048] In a tenth aspect, a computer-readable storage medium is provided, which stores program code for execution by a device, and the program code includes a method for executing any one of the above aspects or its implementation method.

[0049] In an eleventh aspect, a computer program product comprising instructions is provided, which, when run on a computer, enables the computer to execute the method provided by any one of the above aspects or its implementation.

[0050] In a twelfth aspect, a chip is provided, comprising a processor and a communication interface, wherein the processor reads instructions stored in a memory through the communication interface and executes the method provided in any one of the above aspects or implementations thereof. The communication interface may be implemented in hardware or software.

[0051] Optionally, as an implementation method, the chip also includes a memory, in which a computer program or instruction is stored, and the processor is used to execute the computer program or instruction stored in the memory. When the computer program or instruction is executed, the processor is used to execute the method provided by any of the above aspects or its implementation methods.

[0052] When the method provided in this application is executed by a chip, this application does not limit the number of chips that implement the method. For example, the method can be executed by one chip or by two or more chips. Furthermore, when the number of chips implementing the method of this application is two or more, the chip manufacturers are not limited and can be the same manufacturer or different manufacturers.

[0053] 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.

[0054] In a fourteenth aspect, a communication system is provided, comprising the terminal device and network device described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] FIG1 is a schematic diagram of the architecture of a communication system 1000 used in an embodiment of the present application.

[0056] FIG2 is a schematic diagram of carrier aggregation.

[0057] FIG3 is a schematic diagram of a self-carrier scheduling method.

[0058] FIG4 is a schematic diagram of a cross-carrier scheduling method.

[0059] FIG5 is a schematic diagram of a BWP included in a carrier.

[0060] FIG6 is a schematic diagram of multi-cell scheduling.

[0061] FIG7 is a schematic flowchart of a method for indicating time domain resources provided by an embodiment of the present application.

[0062] FIG8 is a schematic flowchart of another method for indicating time domain resources provided by an embodiment of the present application.

[0063] FIG9 is a schematic flowchart of a communication method provided in an embodiment of the present application.

[0064] FIG10 is a schematic diagram of a communication device provided in an embodiment of the present application.

[0065] FIG11 is a schematic diagram of another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0066] The technical solution in this application will be described below with reference to the accompanying drawings.

[0067] Figure 1 is a schematic diagram of the architecture of a communication system 1000 used in an embodiment of the present application. As shown in Figure 1 , the communication system includes a radio access network 100 and a core network 200. Optionally, the communication system 1000 may also include the Internet 300. The radio access network 100 may include at least one radio access network device (such as 110a and 110b in Figure 1 ) and at least one terminal (such as 120a-120j in Figure 1 ). The terminal is wirelessly connected to the radio access network device, and the radio access network device is wirelessly or wiredly connected to the core network. The core network device and the radio access network device may be independent, distinct physical devices, or the core network device's functions and the radio access network device's logical functions may be integrated into the same physical device, or a single physical device may integrate some of the core network device's functions and some of the radio access network device's functions. Terminals and radio access network devices may be interconnected via wired or wireless connections. Figure 1 is merely a schematic diagram. The communication system may also include other network devices, such as wireless relay devices and wireless backhaul devices, which are not shown in Figure 1 .

[0068] Radio access network equipment is the access device that terminals use to wirelessly access a communication system. Radio access network equipment can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next-generation NodeB (gNB) in fifth-generation (5G) mobile communication systems, a next-generation base station in sixth-generation (6G) mobile communication systems, or a base station in future mobile communication systems. It can also be a module or unit that performs some of the functions of a base station, such as a centralized unit (CU) or a distributed unit (DU). The CU here completes the functions of the base station's radio resource control protocol and packet data convergence protocol (PDCP), and can also complete the function of the service data adaptation protocol (SDAP); the DU completes the functions of the base station's radio link control layer and medium access control (MAC) layer, and can also complete part of the physical layer or all of the physical layer. For detailed descriptions of the above protocol layers, please refer to the relevant technical specifications of the 3rd Generation Partnership Project (3GPP).

[0069] 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 of 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.

[0070] The wireless access network device can be a macro base station (such as 110a in Figure 1), a micro base station or an indoor station (such as 110b in Figure 1), a relay node, a donor node, etc. The embodiments of this application do not limit the specific technology and specific device form used by the wireless access network device. For ease of description, network device is used as an abbreviation for wireless access network device, and base station is used as an example of wireless access network device.

[0071] A terminal is a device with wireless transceiver capabilities that can send signals to a base station or receive signals from a base station. A terminal may also be referred to as a terminal device, user equipment (UE), mobile station, mobile terminal, etc. Terminals can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wearable, smart transportation, smart city, etc. A terminal can be a mobile phone, tablet computer, computer with wireless transceiver capabilities, wearable device, vehicle, airplane, ship, robot, robotic arm, smart home device, etc. The embodiments of this application do not limit the specific technology and specific device form adopted by the terminal.

[0072] Base stations and terminals can be fixed or mobile. They can be deployed on land, indoors or outdoors, handheld or vehicle-mounted; on water; or on aircraft, balloons, and satellites. The embodiments of this application do not limit the application scenarios of base stations and terminals.

[0073] The roles of base stations and terminals can be relative. For example, the helicopter or drone 120i in Figure 1 can be configured as a mobile base station. To terminals 120j accessing the wireless access network 100 via 120i, terminal 120i is a base station. However, to base station 110a, 120i is a terminal, meaning that communication between 110a and 120i occurs via a wireless air interface protocol. Of course, communication between 110a and 120i can also occur via a base station-to-base station interface protocol. In this case, 120i is also a base station relative to 110a. Therefore, base stations and terminals can be collectively referred to as communication devices. 110a and 110b in Figure 1 can be referred to as communication devices with base station functionality, while 120a-120j in Figure 1 can be referred to as communication devices with terminal functionality.

[0074] Communication between base stations and terminals, between base stations, and between terminals can be carried out through authorized spectrum, unlicensed spectrum, or both. Communication can be carried out 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.

[0075] 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 that includes the base station functions. The control subsystem that includes the base station functions 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 modem) in the terminal, or by a device that includes the terminal functions.

[0076] In this application, a base station sends downlink signals or downlink information to a terminal, and the downlink information is carried on a downlink channel; the terminal sends uplink signals or uplink information to the base station, and the uplink information is carried on an 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 serving cell of the terminal. When the terminal communicates with the serving cell, it will also be subject to interference from signals in neighboring cells.

[0077] In this document, PDSCH, physical downlink control channel (PDCCH) and physical uplink share channel (PUSCH) are only used as examples of downlink data channels, downlink control channels and uplink data channels, 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.

[0078] To facilitate understanding of the embodiments of the present application, some basic concepts involved in the present application are briefly explained.

[0079] 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 a cell include uplink frequency domain resources and / or downlink frequency domain resources; the spatial domain resources of a cell can be the spatial domain resources corresponding to a beam or a group of beams, and 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 site. 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.

[0080] It should be noted that there is a one-to-one correspondence between cells and carriers, and the terms "cell" and "carrier" can be used interchangeably. In other words, the frequency band of a cell can be understood as the frequency band of the cell's corresponding carrier, and can also be referred to as the cell's operating frequency band or the cell's frequency band.

[0081] 2. Carrier aggregation (CA): This is the process of aggregating two or more component carriers (CCs) to support a larger transmission bandwidth. The CA technology in NR is used to increase the transmission bandwidth for a single user. Specifically, carrier aggregation technology can achieve multi-frequency resource integration. For example, CA technology can aggregate spectrum resources in the same or different frequency bands and provide them to terminals, thereby improving the utilization of the entire network resources and improving the user experience.

[0082] For ease of understanding, the CA technology is briefly introduced with reference to Figure 2. Figure 2 shows that the component carriers corresponding to cell #1, cell #2, and cell #3 are aggregated to provide service to the terminal. Cell #1 is the primary cell (PCell), and cells #2 and #3 are secondary cells (SCells). The PCell is the cell where the terminal establishes an initial connection or reestablishes a radio resource control (RRC) connection. The PCell is responsible for RRC communication with the terminal. The component carrier corresponding to the PCell is called the primary component carrier (PCC) (as shown in Figure 2). The downlink carrier of the PCell is called the DL PCC, and the uplink carrier of the PCell is called the UL PCC. SCells are added during RRC reconfiguration to provide additional radio resources. There is no RRC communication between the SCell and the UE. The component carriers corresponding to the SCell are called secondary component carriers (SCCs) (as shown in Figure 2, SCC#1 and SCC#2). The downlink carrier of the SCell is called the DL SCC, and the uplink carrier of the SCell is called the UL SCC.

[0083] 3. Downlink control information (DCI): The network device sends DCI to the terminal device via the PDCCH. The downlink control information includes scheduling information for the data channel. Based on this scheduling information, the network device and the terminal device perform data transmission via the data channel.

[0084] For example, 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 within a time slot), power control information for data channels and signals, dynamic time slot configuration information, resource preemption information, etc. After detecting the control information, the terminal can send and receive data or perform corresponding operations based on the control information.

[0085] 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, one DCI for each carrier. Depending on the carrier that sends the DCI, there are two methods: self-carrier scheduling and cross-carrier scheduling.

[0086] For ease of understanding, the carrier scheduling method is briefly described with reference to Figures 3 and 4. Figure 3 shows that when using the self-carrier scheduling method, the DCI scheduled for PDSCH or PUSCH transmission on one carrier is also sent on that carrier. As shown in Figure 3, DCI#1 scheduled for PDSCH or PUSCH transmission on CC#1 is sent on CC#1, and DCI#2 scheduled for PDSCH or PUSCH transmission on CC#2 is sent on CC#2. Figure 4 shows that when using the cross-carrier scheduling method, the DCI scheduled for PDSCH or PUSCH transmission on one carrier can be sent on another carrier, thereby achieving the effect of DCI being sent on only one carrier. As shown in Figure 4, DCI#1 scheduled for PDSCH or PUSCH transmission on CC#1 is sent on CC#1, and DCI#2 scheduled for PDSCH or PUSCH transmission on CC#2 is also sent on CC#1.

[0087] 4. Bandwidth Part (BWP): A BWP is a contiguous 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 active BWP.

[0088] For example, 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 within the active uplink BWP, and downlink data and control information are received within the active downlink BWP.

[0089] For ease of understanding, Figure 5 briefly describes how a carrier includes a BWP. As shown in Figure 5, a 50 MHz carrier is configured with three BWPs: BWP#1, BWP#2, and BWP#3. BWP#1 has a bandwidth of 25 MHz, BWP#2 has a bandwidth of 10 MHz, and BWP#3 has a bandwidth of 50 MHz. BWP#2 can be the active BWP.

[0090] 5. BWP identity (ID): A terminal supports up to four UE-dedicated BWPs (UE-dedicated BWPs), where a UE-dedicated BWP is 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 five BWPs configured by higher-layer signaling in the uplink and downlink, respectively. The Initial DL BWP and Initial UL BWP are not UE-dedicated BWPs configured by RRC-specific signaling. The maximum number of UE-dedicated BWPs configured by RRC-specific signaling is four for uplink and four for downlink.

[0091] 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 to 4 indicate 4 UE-dedicated BWPs configured by RRC signaling.

[0092] 6. BWP Indicator: A 2-bit BWP Indicator is used in the DCI to indicate different BWPs. If RRC signaling configures a BWP in the uplink or downlink, the BWP Indicator field in the DCI exists. If RRC signaling does not configure a BWP, the available BWP is the Initial BWP, in which case the length of the BWP Indicator is 0. If RRC signaling configures a BWP in the uplink or downlink, and if scheduling is performed in the currently active BWP, the BWP ID of the currently active BWP needs to be filled in the BWP Indicator.

[0093] As mentioned above, the BWP Indicator in the DCI is 2 bits long. However, a 2-bit BWP Indicator cannot indicate any one of the five BWPs. Optionally, scheduling that indicates the Initial BWP is supported when the number of configured UE-dedicated BWPs is no more than 3. The UE needs to determine which of the following two correspondences to use based on the number of UE-dedicated BWPs configured in RRC signaling.

[0094] One correspondence is: when the number of UE-dedicated BWPs is less than or equal to 3, the correspondence between BWP indicator and BWP ID is shown in Table 1 below:

[0095] Table 1

[0096] Another correspondence is: when the number of UE-dedicated BWPs is equal to 4, the correspondence between BWP indicator and BWP ID is shown in Table 2 below:

[0097] Table 2

[0098] 7. Time domain resource allocation (TDRA): To receive the PDSCH, the terminal first decodes the PDCCH. The DCI carried in the PDCCH specifies how to transmit the PDSCH on the air interface. The DCI indicates the time domain resource information occupied by the 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 length indicator 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] 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 of Index 2 in the TDRA table.

[0103] 8. Multi-cell scheduling: By combining information from multiple DCIs, a single DCI can be used to schedule multiple PDSCHs / PUSCHs on multiple carriers simultaneously. This is called multi-carrier scheduling (or multi-cell scheduling). Carriers scheduled by the same single DCI belong to the same co-scheduled cell set.

[0104] For ease of understanding, the multi-cell scheduling technology is briefly introduced in conjunction with Figure 6. As can be seen from Figure 6, the transmission of PDSCH#1 on CC#1 and the transmission of PDSCH#2 on CC#2 are scheduled by the same DCI (such as the single DCI shown in Figure 6).

[0105] The above text, in combination with Figure 1, briefly introduces the scenarios in which the method for indicating time domain resources provided in the embodiment of the present application can be applied, as well as the basic concepts that may be involved in the embodiment of the present application, and introduces TDRA and multi-cell scheduling in the basic concepts. Among them, the single DCI also indicates the time domain resource information of the corresponding PDSCH on different CCs by pre-configuring the TDRA table.

[0106] Exemplarily, the network device configures a joint TDRA table through RRC signaling. 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.

[0107] Table 4

[0108] In the above-mentioned 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 of a 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 single DCI indicates that cell 1 is currently scheduled for transmission on BWP 1, the corresponding TDRA index value is 1, then it further indexes 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.

[0109] 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 configuration of the corresponding BWP0. However, when the base station configures 4 UE dedicated BWP information in addition to the Initial BWP (BWP0) on each cell, the time domain resource information of BWP4 will not be indicated. In addition, when the base station configures 4 UE dedicated BWP information in addition to the 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.

[0110] 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 single DCI.

[0111] It should be understood that the method for indicating time domain resources provided in the embodiments of the present application can be applied to a system that communicates using multi-antenna technology, for example, the communication system 1000 shown in Figure 1. The communication system may include at least one network device and at least one terminal device. The network device and the terminal device can communicate using multi-antenna technology.

[0112] 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 can 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 the program.

[0113] FIG7 is a schematic flow chart of a method for indicating time domain resources provided by the present application, which includes the following steps:

[0114] S710: The network device sends first configuration information to the terminal device. Correspondingly, the terminal device receives the first configuration information from the network device.

[0115] 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, and the first element indicates time domain resource allocation information in M ​​BWPs 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 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.

[0116] Optionally, each element in the first time domain resource allocation list can be used to indicate time domain resource allocation information in M ​​BWPs in K cells, and the first element can be any one of the at least one element. The K cells can be K carriers. In the present application, the descriptions of cells and carriers can be interchangeable if there is no logical conflict.

[0117] For example, the first time domain resource allocation list in this embodiment can be understood as a TDRA table, or can also be referred to as a sequence or array. When the first time domain resource allocation list is referred to as a TDRA table, an element in the first time domain resource allocation list can also be referred to as a row in the TDRA table.

[0118] 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 follows: 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, where a row in the TDRA table indicates the time domain resource allocation index of the corresponding BWP.

[0119] As an example and not a limitation, in this embodiment, the network device may send the first time domain resource allocation list to the terminal device through high-layer 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.

[0120] Furthermore, the network device may schedule C cells among the K cells through the first DCI. Then the method shown in FIG7 further includes:

[0121] S720: The network device sends a first DCI to the terminal device. Correspondingly, the terminal device receives the first DCI from the network device.

[0122] Specifically, the first DCI is used to schedule data channels in C cells among the 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 implementing multi-cell scheduling. The first DCI includes a BWP indication field, which indicates C BWPs in the C cells. 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.

[0123] 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 C cells. For example, if C is 2, the 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 four BWPs configured in cell #2, i.e., 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.

[0124] Optionally, the first DCI may further include a time domain resource allocation field, indicating an element (e.g., the first element) in the first time domain resource allocation list. The first DCI may further include a modulated cell set indication field and a modulated cell indication field, wherein the modulated cell set indication field indicates the first cell set, and the modulated cell indication field indicates the C cells in the first cell set.

[0125] Since 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 iis 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 all be determined based on the first time domain resource allocation list configured by the network device, thereby avoiding the situation where the time domain resource allocation information of certain BWPs indicated by the BWP indication field cannot be obtained. It also does 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.

[0126] 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 and 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 each BWP.

[0127] 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.

[0128] 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. i BWP, N i is greater than M iFor 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 that can be indicated by different values ​​of the BWP indication field in the i-th cell (4).

[0129] 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:

[0130] 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.

[0131] As another possible implementation, assuming that a terminal supports the configuration of up to 4 terminal-dedicated BWPs (UE-dedicated BWPs), and 3 dedicated BWPs are configured on the second cell in addition to the initial BWP among the above-mentioned C cells, then the different values ​​of the above-mentioned BWP indication field correspond one-to-one to the initial BWP and 3 dedicated BWPs configured in the first cell.

[0132] For ease of understanding, the relationship between the number M of BWPs 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 specific examples:

[0133] Example 1: In addition to the initial BWP, each of the C cells is configured with four dedicated BWPs. Different values ​​of the BWP indication field correspond one-to-one to the four dedicated BWPs. The number M of BWPs indicated in the first time domain resource allocation list satisfies the following relationship:

[0134] 4 is the total number of dedicated BWPs in the i-th cell indicated by different values ​​of the BWP indication field.

[0135] For example, the base station configures that there are 4 cells in the cell set currently scheduled by the first DCI (i.e., the value of C mentioned above 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 BWPs 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 them, and there is no intersection between the columns corresponding to different cells. The lowest to highest columns (or from left to right) of the 4 columns corresponding to each cell refer 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).

[0136] That is to say, in the first DCI, 4 cells are scheduled, and the total number of BWPs configured on 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 requires 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 will not 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. The TDRA table will not exceed the limit of 16 columns.

[0137] For ease of understanding, the situation shown in Example 1 is described in conjunction with Table 5. Possible formats of the first time-domain resource allocation list in this embodiment are:

[0138] Table 5

[0139] Example 2: In addition to the initial BWP, each of the C cells is configured with less than or equal to three dedicated BWPs. Different values ​​of the BWP indication field correspond one-to-one to the initial BWP and the dedicated BWP. The number M of BWPs indicated in the first time domain resource allocation list satisfies the following relationship:

[0140] 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. X is an integer greater than or equal to 1 and less than or equal to 4.

[0141] For example, the base station configures that there are 4 cells in the cell set currently scheduled by the first DCI (i.e., the value of C mentioned above 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 to the highest column (or from left to right) of the 4 columns corresponding to each cell respectively refer to the time domain resource allocation information corresponding to the BWP identifiers in the initial BWP and the 3 dedicated BWPs from low to high (e.g., BWP#0, BWP#1, BWP#2, and BWP#3).

[0142] That is, when the first DCI schedules four cells and the total number of BWPs configured on each cell is less than four, the TDRA table needs to have less than or equal to 16 columns to reflect the time domain resource information of all BWPs. Therefore, the TDRA table can include the information of the initial BWP configured for each cell. This is shown in Table 4 above and will not be repeated here.

[0143] It should be understood that the above examples 1 and 2 are only examples to illustrate the possible forms of the time domain resource allocation information in the M BWPs in the 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 this 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 this application, and will not be illustrated one by one here.

[0144] Further, in this embodiment, after the terminal device receives the above-mentioned first configuration information and the first DCI, it 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. The method flow shown in Figure 7 also includes:

[0145] S730: The terminal device determines a BWP for data transmission and time domain resource allocation information corresponding to the BWP.

[0146] 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.

[0147] 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:

[0148] As a possible implementation, when the BWP configured in the first of 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 based on the values ​​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 two BWPs are configured in the first cell, the first BWP of the first cell can be determined based on the values ​​of the lower bits of the BWP indication field.

[0149] As another possible implementation method, 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 first BWP of the first cell is determined according to the value of the least significant bit of the BWP indication field.

[0150] For example, if BWP#0, BWP#1, BWP#2, BWP#3, and 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, and BWP#4 are configured on cell 4, the bit widths of the indication information required for the corresponding BWP on each cell are 2 bits, 1 bit, 1 bit, and 2 bits, respectively. Therefore, the maximum value of the BWP indication field in the first DCI is 2 bits. When the BWP indication field is "11", since the number of bits of the indication information required for cells 2 and 3 is less than the BWP indication field, when the terminal device determines the BWPs on cells 2 and 3 based on the BWP indication field, it interprets the low-order "1" of the BWP indication field to determine that the currently scheduled BWP on cells 2 and 3 is BWP#1.

[0151] 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.

[0152] In this implementation, the terminal device determines not to receive or transmit data on the first cell; alternatively, the terminal device determines to use an activated BWP for data transmission on the first cell. For example, the terminal device determines to use an activated BWP for data transmission on the first cell before receiving the BWP indication field. Data transmission can be data transmission from a network device to the terminal device, or data transmission from the terminal device to the network device.

[0153] 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. 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 BWP#3 information 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 (for example, the activated BWP used for data transmission on cell 3 for the last time; for example, the activated BWP currently received by the BWP indication field) to transmit data on cell 3; or, the terminal device may not transmit data on cell 3.

[0154] In the method for indicating time domain resources shown in Figure 7, 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 BWPs 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. It also does not cause the number M of BWPs 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, thereby causing 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.

[0155] The present application also provides another method for indicating time domain resources, which avoids the inability to obtain time domain resource allocation information of certain BWPs by configuring the time domain resource allocation information corresponding to the BWP configured for each cell on C cells. The following is a detailed description of the method for indicating time domain resources in combination with Figure 8.

[0156] FIG8 is a schematic flow chart of another method for indicating time domain resources provided by the present application, which includes the following steps:

[0157] 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.

[0158] Furthermore, the network device may schedule the C cells through the second DCI. Then the method shown in FIG8 further includes:

[0159] S820: The network device sends a second DCI to the terminal device. Correspondingly, the terminal device receives the second DCI from the network device.

[0160] It should be understood that the manner in which the network device sends the above-mentioned 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 relevant description in the method for indicating time domain resources shown in FIG. 7 above. The difference is that the number M of BWPs indicated by the second time domain resource allocation list in the embodiment satisfies the following relationship:

[0161] 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.

[0162] In this embodiment, since the number M of BWPs 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 certain BWPs, and improving the efficiency of indicating the time domain resources of the data channel in the scenario of multi-cell scheduling through a single DCI.

[0163] 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 and 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 each BWP.

[0164] 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.

[0165] 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 in the i-th cell that can be indicated by different values ​​of the BWP indicator field, and the time domain resource allocation information corresponding to the BWPs configured in the i-th cell can all 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). The four dedicated BWPs can be indicated by different values ​​of the BWP indicator field (e.g., a BWP indicator field value of "00" indicates BWP#1, a BWP indicator field value of "01" indicates BWP#2, a BWP indicator field value of "10" indicates BWP#3, and a BWP indicator field value of "11" indicates BWP#4), while BWP#0 cannot be indicated by the BWP indicator field. However, the time domain resource allocation information corresponding to the initial BWP and the four dedicated BWPs can all be reflected in the second time domain resource allocation list.

[0166] For ease of understanding, possible forms of the second time domain resource allocation list in this embodiment are described in conjunction with Table 6:

[0167] Table 6

[0168] Further, in this embodiment, after the terminal device receives the above-mentioned second configuration information and the second DCI, it 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. The method flow shown in Figure 8 also includes:

[0169] S830: The terminal device determines a BWP for data transmission and time domain resource allocation information corresponding to the BWP.

[0170] For step S830, reference may be made to the description of step S730 above, which will not be repeated here.

[0171] The present application also provides a communication method. For ease of understanding, the communication method is described in detail below in conjunction with FIG9 .

[0172] FIG9 is a schematic flow chart of a communication method provided by the present application, which includes the following steps:

[0173] 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.

[0174] 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.

[0175] 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, wherein the cell scheduled by the DCI may be a carrier scheduled by the DCI.

[0176] For example, the scheduling cell list in this embodiment can be understood as a scheduling cell table, or can also be referred to as a sequence or array. When the scheduling cell list is referred to as a scheduling cell table, an element in the scheduling cell list can also be referred to as a row (entry) in the scheduling cell table.

[0177] As an example and not a limitation, in this embodiment, the network device may send the scheduling cell list to the terminal device through high-layer signaling (e.g., RRC signaling), or the network device may send the scheduling cell list to the terminal device through other means, such as providing the scheduling cell list to the terminal device through a notification process or a subscription process.

[0178] 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:

[0179] 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.

[0180] Table 7

[0181] As can be seen from Table 7, each row entry in the scheduled cell list contains at least one cell, and the number of cells contained in each row is the number of cells currently scheduled by the DCI.

[0182] It should be understood that for a co-scheduled cell set, when the network device configures a scheduling cell list (or table) through RRC, the scheduling cell indication field in the DCI exists, which indicates a row of cell combinations (which can be understood as a row) in the scheduling cell list configured by RRC.

[0183] It should also be understood that the above Table 7 is only an example and does not constitute any limitation on the scope of protection of this application.

[0184] S920: The network device sends a third DCI to the terminal device. Correspondingly, the terminal device receives the third DCI from the network device.

[0185] 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.

[0186] 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 an index of 2. The terminal device can know that the cells currently scheduled by the third DCI are cell 3 and cell 4 by combining the scheduling cell list and the scheduling cell field in the third DCI, and can know the frequency domain information corresponding to cell 3 and the frequency domain information corresponding to cell 4 currently scheduled by the third DCI by combining the frequency domain information indication field in the third DCI.

[0187] 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 (e.g., determining that one or more of the C cells cannot be scheduled by the third DCI), then the method flow shown in FIG. 9 further includes:

[0188] S930, the terminal device determines a cell that is not scheduled by the third DCI.

[0189] The terminal device determines, based on the frequency domain information corresponding to each of the C cells, a cell in the C cells that cannot be scheduled by the third DCI. In this embodiment, when the configuration value of the FDRA field corresponding to one or more cells indicated by the scheduled cell indication field in the third DCI is an invalid value, the one or more cells are not scheduled by the third DCI.

[0190] 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. The frequency domain resource allocation mode is configured by high-layer signaling (e.g., RRC configuration) and is not described in detail here.

[0191] As an example and not a limitation, when the frequency domain resource allocation method 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, when the frequency domain resource allocation method 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, when the frequency domain resource allocation method corresponding to the third cell among the C cells is a dynamically switched resource allocation method, 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.

[0192] For example, when the base station configures a scheduled cell list, the scheduled 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 settings of the scheduled cell indication field and the FDRA values ​​of each cell to determine that the cells actually scheduled by the third DCI are cell 1 and cell 3.

[0193] The communication method shown in Figure 9, in the scenario where multi-cell scheduling is implemented through a single DCI, the terminal device in this 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 indicated by the single DCI by parsing the frequency domain information indication field in the single DCI without increasing the size of the single DCI, avoiding invalid scheduling when a cell has no frequency domain resources, and improving the flexibility of implementing multi-cell scheduling with a single DCI.

[0194] It should be understood that the size of the serial numbers of the above processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0195] 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.

[0196] 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 illustrative description (such as network devices, terminal devices, etc.), and it should be understood that the embodiments of the present application are not limited to the specific form of the devices. For example, devices that can achieve the same functions in the future are applicable to the embodiments of the present application.

[0197] It is understandable 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).

[0198] The above, in conjunction with Figures 7 and 8, describes in detail the method for indicating time domain resources provided by an embodiment of the present application. The above method for indicating time domain resources is mainly described from the perspective of the interaction between the terminal device and the network device. It is understood that in order to implement the above functions, the terminal device and the network device include the corresponding hardware structure and / or software modules for performing each function.

[0199] The communication method provided by the embodiment of the present application is also described in detail in conjunction with FIG9 . The above communication method is mainly described from the perspective of the interaction between the terminal device and the network device. It is understandable that in order to implement the above functions, the terminal device and the network device include hardware structures and / or software modules corresponding to the execution of each function.

[0200] It is understood 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. Those skilled in the art should readily appreciate that, in conjunction with the units and method steps of the various examples described in the embodiments disclosed in this application, this application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in hardware or in a computer software-driven hardware manner depends on the specific application scenario and design constraints of the technical solution.

[0201] Figures 10 and 11 are schematic diagrams of the structures of possible communication devices provided in embodiments of the present application. These communication devices can be used to implement the functions of the terminal or base station in the above-mentioned method embodiments, and thus can also achieve the beneficial effects possessed by the above-mentioned method embodiments. In the embodiments of the present application, the communication device can be one of the terminals 120a-120j shown in Figure 1, or it can be the base station 110a or 110b shown in Figure 1, or it can be a module (such as a chip) applied to the terminal or base station.

[0202] As shown in Figure 10, the communication device 1000 includes a processing unit 1010 and a transceiver unit 1020. The communication device 1000 is used to implement the functions of the terminal or base station in the method embodiment shown in Figure 7, Figure 8 or Figure 9 above.

[0203] When the communication device 1000 is used to implement the function of the terminal in the method embodiment shown in FIG7 : the transceiver unit 1020 is used to receive first configuration information from a network 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, and where the first element indicates time domain resource allocation information (e.g., a 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 in a one-to-one manner.

[0204] Alternatively, when the communication device 1000 is used to implement the function of the terminal in the method embodiment shown in Figure 8: the transceiver unit 1020 is used to receive second configuration information from the network device, where 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, where the at least one element includes a second element, where the second element indicates time domain resource allocation information (e.g., a 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 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 a second DCI from the network device, where the second DCI is used to schedule data channels in C cells. The second DCI includes a BWP indication field, where the BWP indication field is used to indicate C BWPs in the C cells. The C BWPs correspond to the C cells in a one-to-one manner, that is, the BWP indication field indicates a BWP in each of the C cells.

[0205] Alternatively, when the communication device 1000 is used to implement the function of the terminal in the method embodiment shown in Figure 9: the transceiver unit 1020 is used to receive third configuration information from the network device, and the second configuration information is used to indicate the scheduled cell list. The scheduled cell list includes at least one element, and the 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 based on the frequency domain information corresponding to the C cells.

[0206] When the communication device 1300 is used to implement the function of the base station in the method embodiment shown in FIG7 : the transceiver unit 1020 is used to send first configuration information to the 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, and where the first element indicates time domain resource allocation information (e.g., a 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. The transceiver unit 1020 is further configured to send first downlink control information DCI for scheduling data channels in C cells to the terminal device. The first DCI includes a BWP indication field. The BWP indication field is used to indicate C BWPs in the C cells. The C BWPs correspond one-to-one to the C cells.

[0207] Alternatively, when the communication device 1000 is used to implement the function of the terminal in the method embodiment shown in Figure 8: the transceiver unit 1020 is used to send second configuration information to the terminal device, where 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, the at least one element includes a second element, and the second element indicates 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 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 send a second DCI to the terminal device, where the second DCI is used to schedule data channels in the C cells. The second DCI includes a BWP indication field, where the BWP indication field is used to indicate C BWPs in the C cells. The C BWPs correspond to the C cells in a one-to-one manner, that is, the BWP indication field indicates a BWP in each of the C cells.

[0208] For a more detailed description of the processing unit 1010 and the transceiver unit 1020 , reference may be made to the relevant description in the method embodiment shown in FIG. 7 , FIG. 8 , or FIG. 10 .

[0209] As shown in Figure 11, communication device 1100 includes a processor 1110 and an interface circuit 1120. Processor 1110 and interface circuit 1120 are coupled to each other. It will be appreciated that interface circuit 1120 may be a transceiver or an input / output interface. Optionally, communication device 1100 may further include a memory 1130 for storing instructions executed by processor 1110, input data required by processor 1110 to execute instructions, or data generated by processor 1110 after executing instructions.

[0210] When the communication device 1100 is used to implement the functions of the device shown in FIG. 10 , 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 .

[0211] When the communication device is a chip used in a terminal, the terminal chip implements the functions of the terminal in the above method embodiments. 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 antenna); or the terminal chip sends information to other modules in the terminal (such as a radio frequency module or antenna), and the information is sent by the terminal to the base station.

[0212] 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 the baseband chip of the base station, or it can be a CU, DU or other module, or it can be a device under the O-RAN architecture, such as an open CU, open DU and other devices.

[0213] It is understood that the processor in the embodiments of the present application may be a central processing unit (CPU), or may be 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.

[0214] 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, registers, hard disk, mobile hard disk, CD-ROM or any other form of storage medium well 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 an integral part of the processor. The processor and 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 storage medium can also exist in a base station or a terminal as discrete components.

[0215] In the above embodiments, all or part of the embodiments may be implemented using software, hardware, firmware, or any combination thereof. When implemented using software, all or part of the embodiments may be implemented 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 instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are performed 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 instructions may be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program or instructions may be transferred from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless means. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center that integrates one or more available media. The available medium may be a magnetic medium, such as a floppy disk, hard disk, or magnetic tape; an optical medium, such as a digital video disk; or a semiconductor medium, such as a solid-state drive. The computer-readable storage medium may be a volatile or nonvolatile storage medium, or may include both volatile and nonvolatile types of storage media.

[0216] 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 by each other. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships.

[0217] In this application, "indication" can include direct indication and indirect indication. When describing that a certain indication information indicates A, it can include that the indication information directly indicates A or indirectly indicates A, but it does not mean that the indication information must carry A.

[0218] "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 for the convenience of description and are not used to limit the order of execution of the steps.

[0219] The term "and / or" in this document simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. Additionally, the character " / " in this document generally indicates that the related objects 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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